Changes for page 3.3 Control

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From 31.2 to 32.1

From version 1.1

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To version 31.2

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@@ -1,1 +1,1 @@
--drafts.BMS Mini S.3\. Configuration.WebHome
++Battery management systems.BMS Mini S.3\. Configuration.WebHome

Content

@@ -8,7 +8,7 @@
  To change the common BMS settings, select the "Control → Common settings" section:
--[[image:1733746733473-873.png]]
++[[image:1740394523706-519.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
  In this section:
@@ -16,13 +16,18 @@
  * Cell resistance – nominal (maximum) internal resistance of the cell, Ohm;
  * Relax time (after charging) – a relaxation time after charging, second;
  * Relax time (atfer discharging) – the relaxation time after discharging, second;
--* Number of cycles – a number of charge-discharge cycles;
  * Reset parameters– a command to reset cells state of charge, capacity, and resistance.
--The values “Capacity”, “Resistance”, “Cycles” are used to calculate the SOC of cells and the battery.
++The values “Capacity” and “Resistance” are used to calculate the SOC of cells and the battery.
  The values of “Relax time” are used to determine the state of the battery. If the battery is in a state of relaxation, the system recalculates the voltage on the cells to the state of charge of the battery.
++The “Reset parameters” will reset:
++
++* state of charge (new cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section);
++* cell resistance to “Cell resistance” value;
++* battery capacity to “Cell capacity” value.
++
  The “Reset parameters” command is used for starting-up and adjustment of the battery.
  === SOC estimation ===
@@ -36,7 +36,7 @@
  To change the estimation algorithm for calculating the battery SOC, select the "Control → SOC estimation → Algorithm" section:
--[[image:1733746733477-590.png]]
++[[image:1733746733477-590.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="166" width="800"]]
  The following estimation algorithms supported:
@@ -44,56 +44,45 @@
  * Current and voltage (simplified);
  * Current and voltage (enhanced);
--The SOC calculation algorithm for voltage calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
++The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
--The SOC calculation algorithm “Current and voltage (simplified)” works as follows:
++The **“Current and voltage (simplified)”** SOC calculation algorithm works as follows:
  * if I = 0, the battery is in a state of relaxation and the cell voltage Uocv is outside the [U,,ocv[point 1],,; U,,ocv[point 2],,], the SOC calculation based on the tabular dependence Uocv = Uocv(SOC, t °C);
  * in any other cases, the SOC value is proportional to the charge (coulomb) passed through the battery (current time integral).
--The SOC calculation algorithm “Current and voltage (enhanced)” differs from the simplified algorithm by online correction of effective capacitance. When using this algorithm, it is necessary to fine tune the tabular dependence Uocv = Uocv (SOC, t °C).
++The **“Current and voltage (enhanced)” **SOC calculation algorithm differs from the simplified algorithm by online correction of effective capacitance. When using this algorithm, it is necessary to fine tune the tabular dependence Uocv = Uocv (SOC, t °C).
  To change the algorithm for calculating the Final SOC, select the "Control → SOC estimation → Final SOC" section:
--[[image:1733746733478-414.png]]
++[[image:1733746733478-414.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="167" width="800"]]
  The following battery Final SOC calculation methods are supported:
--*
--** Minimal SOC – SOC of the modular battery is assumed to be the minimum SOC among the battery modules;
--** Average SOC – SOC of the modular battery is taken equal to the arithmetic average of the SOC of the battery modules.
++* Minimal SOC – SOC of the modular battery is assumed to be the minimum SOC among the battery modules;
++* Average SOC – SOC of the modular battery is taken equal to the arithmetic average of the SOC of the battery modules;
++* Min-Max SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if any cell has 100% SOC, b) 0% if any cell has 0% SOC;
++* Max-Min SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if all cells have 100% SOC, b) 0% if all cells have 0% SOC.
--To change other settings of SOC estimation, select the "Control → SOC estimation” section:
++Other parameters:
--[[image:1733746733479-261.png]]
--
--In this section:
--
  * Scale the final SOC – a flag to scale the battery SOC by the following values;
--* SOC corresponding to 0% – battery SOC that sets to be 0%;
--* SOC corresponding to 100% – battery SOC that sets to be 100%.
++* SOC corresponding to 0% – the battery SOC that sets to be 0%;
++* SOC corresponding to 100% – the battery SOC that sets to be 100%.
  * Uocv (open-circuit voltage) table – the dependence of the cell open circuit voltage Uocv on SOC and the cell temperature (selected for specific batteries);
--
--[[image:1733746733480-919.png]]
--
--* Linear zone: point 1 – starting point of the linear zone of Uocv dependence;
--* Linear zone: point 2 – ending point of the linear zone of Uocv dependence;
++* Linear zone - linear zone of the Uocv = Uocv(SOC, t°C) dependency, inside which the cell voltage changes insignificantly:
++** Linear zone: point 1 – starting point of the Uocv linear zone;
++** Linear zone: point 2 – ending point of the Uocv linear zone;
  * Coulomb counting correction (temperature) – the dependence of battery capacity on temperature;
--
--[[image:1733746733481-286.png]]
--
  * Coulomb counting correction (cycles) – the dependence of battery capacity on the number of charge-discharge cycles.
--[[image:1733746733482-538.png]]
--
--
  === SOC correction ===
--The BMS Mini device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see section **SOC estimation**).
++The BMS Mini device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see [[SOC estimation>>doc:||anchor="HSOCestimation"]]).
  To configure parameters for periodically correcting the battery state of charge, select the "Control → SOC correction" section:
--[[image:1733746733483-444.png]]
++[[image:1733746733483-444.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="160" width="800"]]
  In this section:
@@ -104,29 +104,35 @@
  * Ignore the linear zone – a flag to ignore linear SOC zone while correction;
  * Last correction timestamp – time when last correction was made.
--1.
--11.
--111. Resistance estimation
++=== Resistance estimation ===
  Calculation of the resistance of cells is carried out in two ways. The first method is used when the battery passes from a relaxation state to a charge or discharge state, wherein the cell resistance value
--R = (U-U,,ocv,,) / I,,stable,,,
++{{formula fontSize="SMALL" imageType="PNG"}}
++R = \frac{U-U_{ocv}}{I_{stable}}
++{{/formula}}
  where U is the cell voltage measured in the charge or discharge state, V; U,,ocv,, is the cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, – stabilized current through the cell in the state of charge or discharge.
  The second method is used for a stepwise change in the current through the cell, while the value of the cell resistance:
--R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,,
++{{formula fontSize="SMALL"}}
++R = \frac{U_2-U_1}{I_{stable2}-I_{stable1}}
++{{/formula}}
--(Q,,max,, is the maximum cell capacity),
++provided that
--where U,,2,, is the voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, – the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it.
++{{formula fontSize="SMALL"}}
++| I_{stable2}-I_{stable1} | > 0.2 × Qmax
++{{/formula}}
++where Q,,max,, — the maximum cell capacity,U,,2,, — voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, — the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it.
++
  The stabilized current I,,stable,, = I, if during the stabilization time the instantaneous current I is in the range from 0.95 × I to 1.05 × I.
  To change parameters of the algorithm for calculating the cell resistance, select the "Control → Resistance estimation" section:
--[[image:1733746733484-681.png]]
++[[image:1733746733484-681.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="104" width="800"]]
  In this section:
@@ -136,42 +136,91 @@
  * Minimum SOC – minimum cell SOC value for resistance calculation;
  * Maximum SOC – maximum cell SOC value for resistance calculation.
--The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance/2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see Common settings). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
++The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance/2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see [[Common settings>>doc:||anchor="HCommonsettings"]]). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
--=== Charge map ===
++=== Low SOC (signal) ===
--The BMS Mini device calculates maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
++To change the parameters of the generation a signal about low battery level, select the "Control → Low SOC (signal)" section:
--Calculated current values are sending to a charger or an intellectual load over the CAN bus.
++[[image:1740396460923-423.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="141" width="800"]]
--To configure parameters for determining the charge current limit, select the "Control → Charge map" section:
++In this section:
--[[image:1733746766504-864.png]]
++* Enable – a flag to enable signal generation;
++* Minimum SOC, %;
++* Tolerant SOC, %;
++* Delay before setting the signal, second;
++* Delay before clearing the signal, second;
++* Lock – lock the signal until the device is reset.
++Signal generation conditions:
++
++* the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
++
++Conditions for clearing the signal:
++
++* the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
++
++(% class="box infomessage" %)
++(((
++The "Low SOC signal" is indicative and can be output to a discrete output or a power switch.
++)))
++
++=== High charging current (signal) ===
++
++To change the parameters of the generation high-current signal, select the "Control → High charging current (signal)" section:
++
++[[image:1740396996935-403.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="144" width="800"]]
++
  In this section:
--* Enable – a flag to start calculation of the charge current limit;
--* Maximum charge current – a maximum allowable value of the charge current (under normal conditions):
--* Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current Kcs depending on SOC and battery temperature;
--* Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
++* Enable – a flag to enable signal generation;
++* Maximum charging current, А;
++* Tolerant charging current, А;
++* Delay before setting the signal, second;
++* Delay before clearing the signal, second;
++* Lock – lock the signal until the device is reset.
--[[image:1733746766506-660.png]]
++Signal generation conditions:
--* Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current Kcc depending on contactor temperature;
--* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
++* the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
--[[image:1733746766508-178.png]]
++Conditions for clearing the signal:
--* Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current Kcv depending on maximum cell voltage;
--* Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage.
++* the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
--[[image:1733746766509-971.png]]
++(% class="box infomessage" %)
++(((
++The "High charging current" signal is indicative and can be output to a discrete output or a power switch.
++)))
--Value of the charge current limit at given SOC, temperature, contactors temperature and maximum cell voltage is calculated as follows:
++=== Charge map ===
--Charging current limit = Maximum charging current × Kcs × Kcc × Kcv
++The BMS Mini device calculates maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
++Calculated current values are sending to a charger or an intellectual load over the CAN bus.
++To configure parameters for determining the charge current limit, select the "Control → Charge map" section:
++
++[[image:1740397188247-315.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="179" width="800"]]
++In this section:
++
++* Enable – a flag to start calculation of the charge current limit;
++* Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A;
++* Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
++* Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current** Kcs** depending on SOC and battery temperature;
++* Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
++* Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature;
++* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
++* Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current **Kcv** depending on maximum cell voltage;
++* Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage;
++* Option 4: Limit charge current by the cell temperature - a flag to enable correction of maximum allowable charging current **Kct** depending on maximum cell temperature;
++* Option 4: Cell temperature x Factor – the dependence of the correction factor on maximum cell temperature.
++
++Value of the charge current limit at given SOC, temperature, contactors temperature, maximum cell voltage and maximum cell temperature is calculated as follows:
++
++**Charge current limit = Maximum charge current × Kcs × Kcc × Kcv × Kct**
++
  === Discharge map ===
  The BMS Mini device calculates maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
@@ -180,32 +180,135 @@
  To configure parameters for determining the discharge current limit, select the "Control → Discharge map" section:
--[[image:1733746766511-477.png]]
++[[image:1740397304972-174.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="182" width="800"]]
  In this section:
  * Enable – a flag to start calculation of the discharge current limit;
--* Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions):
--* Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current Kds depending on SOC and temperature;
++* Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A;
++* Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
++* Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current **Kds **depending on SOC and temperature;
  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
++* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
++* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
++* Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current **Kdv** depending on minimum cell voltage;
++* Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage;
++* Option 4: Limit discharge current by the cell temperature - a flag to enable correction of maximum allowable discharging current **Kdt** depending on maximum cell temperature;
++* Option 4: Cell voltage x Factor – the dependence of the correction factor on minimum cell temperature.
--[[image:1733746766512-300.png]]
++Value of the discharge current limit at given SOC, temperature, contactors temperature, minimum cell voltage and maximum cell temperature is calculated as follows:
--* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current Kdc depending on contactor temperature;
--* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
++**Discharge current limit = Maximum discharge current × Kds × Kdc × Kdv × Kdt**
--[[image:1733746766513-161.png]]
++=== Main contactor ===
--* Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current Kdv depending on minimum cell voltage;
--* Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage.
++The BMS Mini device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in a case of sealing of the charging or discharging contactors.
--[[image:1733746766514-686.png]]
++The Main contactor algorithm supports the following modes:
--Value of the discharge current limit at given SOC, temperature, contactors temperature and minimum cell voltage is calculated as follows:
++* Always on;
++* Automatic.
--Discharging current limit = Maximum discharging current × Kds × Kdc × Kdv
++In “Always on” mode main contactor closes if all the following is true:
++* Other contactors are open;
++* There are no errors from the "Errors 1, 2 ..." bitfileds.
++In “Always on” mode main contactor opens if all the following is true:
++
++* Other contactors are open;
++* There is an error from the the "Errors 1, 2 ..." bitfileds.
++
++In “Automatic” mode, the main contactor closes by internal algorithms at the same time with other contactors.
++
++In “On demand” mode, the main contactor closes by external the “Close Main contactor” request.
++
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Main **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
++
++To change the parameters of the main contactor, select the "Control → Main contactor" section:
++
++[[image:1740397558976-651.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="144" width="800"]]
++
++In this section:
++
++* Enable – a flag to enable the main contactor control;
++* Algorithm – main contactor control algorithm:
++** Always on – contactor is always closed;
++** Automatic – contactor closes by internal charge and discharge algorithms;
++** On demand – contactor is closed by an external request;
++* Time to keep the contactor closed before closing the others – a time for other contactors to be open after the main contactor is closed;
++* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, s;
++* Keep the contactor open until the device is restarted – a flag for keeping the main contactor open until the system is reset;
++* Errors 1, 2 to open the main contactor – bitfields to choose the errors which will open the main contactor.
++
++=== Charging status ===
++
++To change the parameters of charging process status, select the "Control → Charging status" section:
++
++[[image:1740399071280-626.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
++In this section:
++
++* Current to set the "Charging current present" – a current level to generate the "Charging current present" signal, A;
++* Current to clear the "Charging current present" – a current level to clear the "Charging current present" signal, A;
++* Voltage to clear the “Ready to charge” – a threshold voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared;
++* Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
++* Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0;
++* Errors 1, 2 to clear the "Ready to charge" – bitfields to choose the errors which will clear the "Ready to charge" signal.
++
++(% class="box infomessage" %)
++(((
++**Note:** The "Allow charging" signal activates under two independent conditions:
++1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and
++2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.
++)))
++
++=== Discharging status ===
++
++To change the parameters of discharging process status, select the "Control → Discharging status" section:
++
++[[image:1740399096018-240.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="110" width="800"]]
++In this section:
++
++* Current to set the "Discharging current present" – a current level to generate the "Discharging current present" signal, А;
++* Current to clear the "Discharging current present" – a current level to clear the "Discharging current present" signal, А;
++* Voltage to clear the “Ready to discharge” – a threshold voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
++* Voltage to reset the “Ready to discharge” – a tolerant voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
++* Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal.
++
++=== Precharge ===
++
++The BMS Main 3 device can control the precharge contactor. The precharge contactor is used to charge the intermediate capacity with low current and usually placed with the limiting resistor in parallel to charging or discharging contactor.
++
++BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors. Also BMS can measure the power dissipated on precharge resistor and generate an error if it greater than configured limit.
++
++[[image:1740399150173-761.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="800"]]
++
++To change the parameters of precharge contactor, select the "Control → Precharge" section:
++
++* Precharge current threshold to finish precharging – a minimum current value at which precharging process assumed to be finished, A;
++* Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error";
++* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
++* Relaxation between attempts – a duration between precharge attempts, millisecond;
++* Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor;
++* Precharge resistor resistance, Ohm;
++* Maximum allowable power dissipated in the resistor, W;
++* Delay before setting the "Precharge error" when checking power, millisecond;
++* Delay before clearing the "Precharge error", second;
++* Lock the "Precharge error" – a flag to block the error until the device is restarted.
++
++“Precharge error” generation conditions if any of the following is true:
++
++* the precharge current does not decrease during the "Precharge time" after "Number of precharging attempts";
++* power dissipated on the precharge resistor is above the maximum value during the “Delay before setting the 'Precharge error' when checking power” time.
++
++(% class="box warningmessage" %)
++(((
++Behavior of contactors at “Precharge error” is configured in corresponding contactor settings!
++)))
++
  === Charge ===
  There are two contactors that serve charging the battery: a charging contactor and an allow charging contactor. With the help of the allow charging contactor, the BMS commands the charger to start or stop charging.
@@ -212,48 +212,40 @@
  The device supports three charge control algorithms:
--* charging is always allowed;
--* charging is allowed when there is a signal “Charger connected”;
--* charging is allowed when there is a signal “Charge request”.
++* Always on – charging is always allowed;
++* On charger connected – charging is allowed when there is a signal “Charger connected”;
++* On charge request – charging is allowed when there is a signal “Charge request”.
--If the "**Always on**" algorithm is selected, the charging contactor and the allow charging contactor are always closed. If at least one of the errors appears:
++If the "**Always on**" algorithm is selected, the charging contactor and the allow charging contactor are always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
--* Overvoltage;
--* Overcurrent;
--* High temperature (CH);
--* Low temperature (CH);
--* HYG offline (optional);
--* Combilift offline (optional);
--* Spirit offline (optional);
--* Spirit charger error (optional);
--* Short circuit (optional);
--* High contactor temperature (optional);
--* CH contactor cycles error;
--* Critical error
++* Service reset;
++* Power down request;
++* Inhibit charging,
  both contactors are open (no current flows).
--When the algorithm "**On Charger connected**" is selected, the control is performed as follows:
++When the algorithm "**On charger connected**" is selected, the control is performed as follows:
--* If there is a signal “Charger connected” and there are no errors (see the list above), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
++* If there is a signal “Charger connected” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
  * If the signal “Charger connected” disappears, the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens;
  * If in the process of charging the voltage on the cell exceeds the “Ready to charge” level, the allow charging contactor opens (while the charging contactor remains closed);
--* If errors in the list above occur the charging contactor and allow charging contactor open.
++* If errors from the "Errors 1, 2 ..." bitfields occur the charging contactor and allow charging contactor open.
--When the "**On Charge request**" algorithm selected, the control is performed as follows:
++When the "**On charge request**" algorithm selected, the control is performed as follows:
--* If there is a signal “Charge request” and there are no errors (see the list above), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
++* If there is a signal “Charge request” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
  * If the signal “Charge request” disappears, the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens;
  * If in the process of charging the voltage on the cell exceeds the “Ready to charge” level, the allow charging contactor opens (while the charging contactor remains closed);
--* If errors in the list above occur the charging contactor and allow charging contactor open.
++* If errors from the "Errors 1, 2 ..." bitfields occur the charging contactor and allow charging contactor open.
--Note – When errors occur in the system, the charging contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Charge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
--When the power down request occurs, the allow charging contactor opens immediately and the charging contactor opens after the delay T,,off,,. Reclosing the charging contactor and allow charging contactor is performed if the power down request is removed.
--
  To change the parameters of the battery charge control algorithm, select the "Control → Charge" section:
--[[image:1733746766516-845.png]]
++[[image:1740399363134-722.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="306" width="800"]]
  In this section:
@@ -262,20 +262,15 @@
  ** Always on – charging is always allowed;
  ** On charger connected – charging is allowed when there is a signal “Charger connected”;
  ** On charge request – charging is allowed when there is a signal “Charge request”;
--* Current corresponding to charging – a current level to generate the "Charging current present" signal, A;
--* Current corresponding to no charging – a current level to clear the "Charging current present" signal, A;
++* Allow charging only when the "Ready to charge" signal is set – charging contactor will open if "Ready to charge" signal is cleared;
  * Delay before starting charging – a time delay T,,on,, before closing the charging contactor and the allow charging contactor, millisecond;
  * Delay before stopping charging – a time delay T,,off,, before opening the charging contactor, millisecond;
++* Control the precharging contactor – a flag that allows control of the precharging contactor (see [[Precharge>>url:http://#HPrecharge]]);
  * Use custom delays before stopping charging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
++* Errors 1, 2 to open the charging contactor – bitfields to choose the errors which will open the charging contactor;
  * Custom delay: <error> – specific error delay, millisecond;
  * Switch off the charging contactor on errors without delay – a flag to protectively open the charging contactor without a delay. In the opposite case, when an error is detected, the charging contactor opens always with the delay “Delay before stopping charging”;
--* Control the precharging contactor – a flag that allows control of the precharging contactor;
--* Voltage to clear the “Ready to charge” – a threshold voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared;
--* Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
--* Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0.
--Note – The allow charging contactor closes under two independent conditions: 1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and 2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.
--
  === Discharge ===
  The device controls the discharging contactor to connect battery to the load.
@@ -282,50 +282,37 @@
  The device supports three algorithms to control battery discharging:
--* load is always connected;
--* load is connected when there is no signal “Charger connected”;
--* load is connected when there is signal “Discharge request”.
++* Always on – load is always connected;
++* On charger disconnected – load is connected when there is no signal “Charger connected”;
++* On discharge request – load is connected when there is signal “Discharge request”.
--When the algorithm "**Always on**" is selected, the discharging contactor is always closed. If at least one of the errors appears:
++When the algorithm "**Always on**" is selected, the discharging contactor is always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
--* Undervoltage;
--* Overvoltage (optional);
--* Overcurrent;
--* High temperature (DCH);
--* Low temperature (DCH) (optional);
--* HYG offline (optional);
--* Combilift offline (optional);
--* Spirit offline (optional);
--* Spirit charger error (optional);
--* Short circuit (optional);
--* High contactor temperature (optional);
--* DCH contactor cycles error;
--* Critical error
++* Service reset
++* Power down request
++* Inhibit discharging
  the discharging contactor opens.
--If the algorithm "**On Charger disconnected**" is selected, the control is performed as follows:
++If the algorithm "**On charger disconnected**" is selected, the control is performed as follows:
--* if there is no signal “Charger connected”, the charging contactor is opened and there are no errors (see the list above), then through the delay time T,,on,, the discharging contactor closes;
--* If the signal “Charger connected” appears or errors occur (see the list above), then after the delay time T,,off,, the discharging contactor opens.
++* if there is no signal “Charger connected”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes;
++* If the signal “Charger connected” appears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens.
--When the "**On Discharge request**" algorithm selected, the control is performed as follows:
++When the "**On discharge request**" algorithm selected, the control is performed as follows:
--* if there is signal “Discharge request”, the charging contactor is opened and there are no errors (see the list above), then through the delay time T,,on,, the discharging contactor closes;
--* If the signal “Discharge request” disappears or errors occur (see the list above), then after the delay time T,,off,, the discharging contactor opens.
++* if there is signal “Discharge request”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes;
++* If the signal “Discharge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens.
--Note – In case of errors in the system operation, the opening of the discharging contactor is performed either immediately or with a delay T,,off,, (depends on the settings described below).
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
--
--The device supports controlling the precharging contactor. The duration of switching on the precharging contactor before closing the discharging (load) contactor is adjusted.
--
--When the power down request occurs, the discharging contactor opens after delay T,,off,,. Reclosing the discharging contactor is performed if the power down request is removed.
--
  To change the parameters of the battery discharge control algorithm, select the "Control → Discharge" section:
++[[image:1740399783613-216.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="311" width="800"]]
--[[image:1733746885414-479.png]]
--
  In this section:
  * Enable – a flag to activate the discharge control;
@@ -333,31 +333,51 @@
  ** Always on – load is always connected;
  ** On charger disconnected – load is connected when there is no signal “Charger connected”;
  ** On discharge request – load is connected when there is signal “Discharge request”;
--* Current corresponding to discharging – a current level to generate the "Discharging current present" signal, А;
--* Current indicating no discharging – a current level to clear the "Discharging current present" signal, А;
++* Allow charging only when the "Ready to discharge" signal is set – discharging contactor will open if "Ready to discharge" signal is cleared;
  * Delay before starting discharging – a time delay T,,on,, before closing the discharging contactor, millisecond;
  * Delay before stopping discharging – a time delay T,,off,, before opening the discharging contactor, millisecond;
++* Control the precharging contactor – a flag that allows control of the precharging contactor while closing the discharge contactor (see [[Precharge>>path:#HPrecharge]]);
++* Errors 1, 2 to open the discharging contactor – bitfields to choose the errors which will open the discharging contactor;
  * Use custom delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
  * Custom delay: <error> – specific error delay, millisecond;
  * Switch off the discharging contactor on errors without delay – a flag to protectively open the discharging contactor without a delay. In the opposite case, when an error is detected, the discharging contactor opens always with the delay “Delay before stopping discharging”.
--* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
--* Voltage to clear the “Ready to discharge” – a threshold voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
--* Voltage to reset the “Ready to discharge” – a tolerant voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
  === Charge/Discharge ===
  The BMS Mini device can control the charging/discharging contactor that is used to both charge and discharge the battery.
--The charging/discharging contactor combines algorithms of charging and discharging contactor. It behaves as a charging contactor when «Charge request» or «Charger connected» are set, otherwise – as a discharging contactor.
++Charge/Discharge contactor has three algorithms of operation:
--The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section:
++* Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor;
++* Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
++* Independent (on Charge request or Discharge request) - Charge/Discharge contactor is based on its own controller that listen to Charge and Discharge requests and closes if one of these signals occurs.
--[[image:1733746901779-991.png]]
++TBA
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Charge/Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
++The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section:
++
++[[image:1740400166950-906.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="211" width="800"]]
++
  In this section:
  * Enable – a flag to enable the charge/discharge controller.
++* Algorithm:
++** Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor;
++** Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
++** Independent (on Charge request or Discharge request);
++* Delay before starting charging or discharging, millisecond;
++* Delay before stopping charging or discharging, millisecond;
++* Control the precharging contactor – a flag that enables control of precharging contactor while closing the charge/discharge contactor;
++* Emulate the "Charging" and "Discharging" signals – a flag to enable generation of "Charging" and "Discharging" signals when closing charge/discharge contactor;
++* Errors 1, 2 to prevent CHARGING through charging/discharging contactor, Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor – bitfields to choose the errors which will open the charging/discharging contactor. This bitfields are combined by bitwise OR and intended to separate settings for charging and discharging processes;
++* Errors 1, 2 which affect the contactor only if battery CHARGING is detected – a bitfield to choose the errors which will trigger only if charging current is present. This bitfield is combined with "Errors 1, 2 to prevent CHARGING through charging/discharging contactor" by bitwise AND;
++* Errors 1, 2 which affect the contactor only if battery DISCHARGING is detected – a bitfield to choose the errors which will trigger only if discharging current is present. This bitfield is combined with "Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor" by bitwise AND;
++* Switch off the charging/discharging contactor on errors without delay – a flag to protectively open the charging/discharging contactor without a delay. In the opposite case, when an error is detected, the charging/discharging contactor opens always with the delay “Delay before stopping discharging”.
  === Discharge (AUX) ===
@@ -374,8 +374,7 @@
  To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section:
--[[image:1733746932199-845.png]]
--
++[[image:1740400254884-851.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="179" width="800"]]
  In this section:
  * Enable – a flag to activate the auxiliary discharge control;
@@ -382,65 +382,46 @@
  * Switch off the discharging (AUX) contactor if the SOC is too low;
  * Minimum SOC – a minimum SOC value, when reached, the auxiliary (AUX) discharging contactor opens, %;
  * Tolerant SOC – a permissive SOC value, upon reaching which the auxiliary (AUX) discharging contactor re-closes, %;
++* Switch off the discharging (AUX) contactor if the cell voltage is out of the range;
++* Minimum cell voltage, V;
++* Maximum cell voltage, V;
  * Switch off the discharging (AUX) contactor if the battery voltage is out of the range;
--* Minimum voltage – minimum battery voltage, V;
--* Maximum voltage – maximum battery voltage, V;
++* Minimum battery voltage, V;
++* Maximum battery voltage, V;
++* Errors 1, 2 to open the auxiliary discharging contactor – bitfields to choose the errors which will open the auxiliary discharging contactor.
--Switch off the discharging (AUX) contactor on errors – the auxiliary (AUX) discharging contactor opens if the following errors occur: Undervoltage, Overcurrent, High temperature (DCH), Short circuit, Critical error.
--
--=== Main contactor ===
--
--The BMS Mini device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in a case of sealing of the charging or discharging contactors.
--
--The main contactor closes if there are no errors from the list below:
--
--* Overcurrent;
--* Undervoltage;
--* Overvoltage;
--* High temperature (CH);
--* High temperature (DCH);
--* Unallowable charging;
--* Critical error.
--
--The main contactor opens if the charging and discharging contactors are opened and any of the following conditions is met:
--
--* charging or discharging current is detected during a set time;
--* voltage of any cell is lower than the minimum cell voltage configured in the section "Protections → Undervoltage" during a set time;
--* voltage of any cell is greater than the maximum cell voltage configured in the section "Protections → Overvoltage" during a set time;
--* temperature of any cell is greater than the maximum cell temperature configured in the section "Protections → High temperature" during a set time;
--* Critical error stays on during a set time.
--
--To change the parameters of the main contactor, select the "Control → Main contactor" section:
--
--[[image:1733746797002-498.png]]
--
--In this section:
--
--* Enable – a flag to enable the main contactor control;
--* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
--* Keep the contactor open until the device is restarted – a flag for keeping the main contactor opened until the system be reset.
--
  === Cell balancing ===
--Balancing makes the voltage of all cells be equal to the minimum cell voltage.
++Balancing makes the voltage of all cells equal to the minimum cell voltage.
  The following balancing rules are supported:
--* only when the battery is charging (current I > 0) and some time until the battery is relaxed;
++* when the battery is charging (current I > 0) and time after until the battery is relaxed;
  * when the battery is charging (current I > 0) or when the battery is in a state of relaxation;
  * always (regardless of battery state).
--A balancing resistor is connected to the cell if:
++A balancing resistor is connected to the cell if the following conditions are simultaneously met:
--* the voltage on the cell is higher than the starting voltage of the balancing;
--* the difference between the cell voltage and the minimum voltage among the cells of the battery is greater than the balancing deviation.
++* the voltage on the cell is higher than the balancing start voltage;
++* the difference between the voltage on the cell and the minimum voltage among the battery cells is greater than the balancing start threshold;
--If the BMS Mini overheats, then the balancing of the cells connected to this device will not be performed.
++A balancing resistor is disconnected from the cell if any of the following conditions are met:
--To change the cell balancing parameters, select the "Control → Cell balancing" section:
++* the voltage on the cell is less than the balancing stop voltage;
++* the difference between the voltage on the cell and the minimum voltage among the battery cells is less than the balancing stop threshold.
--[[image:1733746797003-364.png]]
++(% class="box infomessage" %)
++(((
++If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
++)))
++The BMS Mini device can enable the cell balancing by the external “Balancing request” signal. Balancing process will be started to cells which the voltage is higher than the balancing start voltage and the difference between the cell voltage and the minimum voltage among all the cells is greater than the balancing stop threshold.
++
++BMS Mini device can force a cell balancing, if its voltage is higher than estimated value.
++
++To change the cell balancing parameters, select the "Control → Cell balancing" section:
++
++[[image:1740404562825-676.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="168" width="800"]]
  In this section:
  * Enable – a flag to enable cell balancing;
@@ -448,11 +448,15 @@
  ** Balance on charge;
  ** Balance on charge or relaxed;
  ** Balance always;
--
--[[image:1733746797004-660.png]]
--
++* Balancing condition:
++** Automatic – balancing will be performed automatically if needed conditions are met;
++** On balancing request – balancing will start only if a remote request is received. In this case cells will start to balance regardless the "Voltage deviation to start balancing" value;
  * Minimum cell voltage to start balancing, V;
--* Balancing deviation, V.
++* Voltage deviation to start balancing;
++* Voltage deviation to stop balancing;
++* Voltage for forced balancing – if cell voltage is above this value, it will start discharging through balancing resistor;
++* Maximum allowable temperature of the board, ºC;
++* Command to discharge all cells – a flag to force the balancing of all cells.
  === Power down ===
@@ -467,21 +467,20 @@
  To change the parameters of the power down control, select the "Control → Power down" section:
--[[image:1733746797005-459.png]]
--
++[[image:1740404859367-943.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]]
  In this section:
  * Minimum voltage to power down – a minimum voltage level of the battery below which the BMS commands to shut down the battery, V;
  * Idle time to power down – a time of battery inactivity after which the battery is shut down, minute;
++* Wait the "Power up/down request" is cleared (on startup) – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS;
++* Delay before setting the internal power down signal – a delay before turning off the device power when receiving the “Power down request” command, ms.
--Wait the "Power up/down request" is cleared (on startup) – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS.
--
  === Heater ===
  To change the parameters of the heater control algorithm, select the "Control → Heater" section:
--[[image:1733746808496-606.png]]
++[[image:1740404973346-344.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
  In this section:
  * Enable – a flag to enable heater control;
@@ -489,7 +489,7 @@
  * Tolerant cell temperature, °C;
  * Delay before starting the heater, millisecond;
  * Delay before stopping the heater, millisecond;
--* Switch off the heater on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
++* Errors 1, 2 to turn off the heater – bitfields to choose the errors which will turn off the heater.
  As a result of operating the heating algorithm, the “Heater” signal is generated.
@@ -501,15 +501,17 @@
  * the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before stopping the heater” time.
++(% class="box infomessage" %)
++(((
  If there is the "Heater" signal, the heater contactor closes and/or a signal is output to the corresponded digital output.
++)))
--
  === Cooler ===
  To change the parameters of the cooler control algorithm, select the "Control → Cooler" section:
--[[image:1733746808497-424.png]]
++[[image:1740405145695-704.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="149" width="800"]]
  In this section:
  * Enable – a flag to enable cooler control;
@@ -517,7 +517,7 @@
  * Tolerant cell temperature, °C;
  * Delay before starting the cooler, millisecond;
  * Delay before stopping the cooler, millisecond;
--* Switch off the cooler contactor on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
++* Errors 1, 2 to turn off the heater – bitfields to choose the errors which will turn off the cooler.
  As a result of operating the cooling algorithm, the "Cooler" signal is generated.
@@ -529,9 +529,11 @@
  * the maximum temperature among all cells of the battery is less than the “Tolerant cell temperature” value during the “Delay before stopping the cooler” time.
++(% class="box infomessage" %)
++(((
  If there is the "Cooler" signal, the cooler contactor closes and/or a signal is output to the corresponded digital output.
++)))
--
  === Cell analysis ===
  Discharge characteristics of the battery – the dependence Uocv = Uocv (DOD) – is used to determine the tabular dependence Uocv = Uocv (SOC, t °C), which is necessary for calculating the state of charge of the battery.
@@ -545,7 +545,7 @@
  To configure parameters for determining the discharge characteristic of the battery, select the "Control → Cell analysis" section:
--[[image:1733746808498-116.png]]
++[[image:1733746808498-116.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
  In this section:
@@ -590,5 +590,4 @@
  * DOD – depth of discharge, Ah;
  * Cell – position of the analyzed cell for which OCV and Resistance values are provided;
  * OCV – cell voltage Uocv, V;
--
--Resistance – cell resistance, Ohm.
++* Resistance – cell resistance, Ohm.

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Changes for page 3.3 Control

Summary

Details

Applications

Navigation

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