Changes for page 3.3 Control

Last modified by Admin on 2025/04/09 12:14

From 10.7 to 10.8 From 12.9 to 12.10

From version 10.8

edited by Admin
on 2024/12/24 16:27

Change comment: There is no comment for this version

To version 12.9

edited by Admin
on 2024/12/24 18:12

Change comment: There is no comment for this version

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@@ -304,18 +304,80 @@
  === Main contactor ===
--TBA
++The BMS Main 3 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 case of sealing of the charging or discharging contactors.
++The Main contactor algorithm supports the following modes:
++
++* Always on;
++* Automatic;
++* On demand.
++
++In “Always on” mode main contactor closes if all the following is true:
++
++* Charging contactor is open;
++* Discharging contactor is open;
++* There are no errors from the list below:
++** Overcurrent;
++** Undervoltage;
++** Overvoltage;
++** High temperature (CH);
++** High temperature (DCH);
++** Unallowable charging;
++** Critical error.
++
++In “Always on” mode main contactor opens if all the following is true:
++
++* Charging contactor is open;
++* Discharging contactor is open;
++* There is an error from the list below:
++** Overcurrent;
++** Undervoltage;
++** Overvoltage;
++** High temperature (CH);
++** High temperature (DCH);
++** Unallowable charging;
++** Critical error.
++
++In “Automatic” mode, the main contactor closes by internal charging and discharging algorithms at the same time with Precharging, Charging and Discharging contactors.
++
++In “On demand” mode, the main contactor closes by external the “Close Main contactor” request.
++
++To change the parameters of the main contactor, select the "Control → Main contactor" section:
++
++[[image:1733322872744-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" 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.
++
  === Charging status ===
--TBA
++* 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.
++(% 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 ===
--TBA
++* 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;
  === Precharge ===
++TBA
  === Charge ===
@@ -345,9 +345,9 @@
  or one of the signals:
--* Service reset
--* Power down request
--* Inhibit charging
++* Service reset;
++* Power down request;
++* Inhibit charging,
  both contactors are open (no current flows).
@@ -365,11 +365,14 @@
  * 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.
--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 **charging **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
  To change the parameters of the battery charge control algorithm, select the "Control → Charge" section:
--[[image:1733322798914-813.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="327" width="800"]]
++[[image:1735063563460-549.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="262" width="800"]]
  In this section:
@@ -378,20 +378,17 @@
  ** 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”;
++* Allow charging only when the "Ready to charge" signal is set – charging contactor will open if "Ready to charge" signal is cleared;
  * 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;
  * 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;
++* Errors 1, 2 to open the charging contactor – bitfields to choose the errors which will open the charging contactor;
  * Use custom delays before stopping charging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
--* Custom delay: <error> – specific error delay, millisecond;
++* Custom delay: <error> – delay for specific error, 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.
@@ -438,7 +438,10 @@
  * if there is signal “Discharge request”, the charging contactor is open 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.
--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:** in case of errors in the system operation, **discharging **contactor opens either immediately or with a 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.
@@ -463,8 +463,6 @@
  * Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
  * Check voltages before and after contactors to finish precharging – a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor;
  * Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
--* 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 ===
@@ -505,61 +505,6 @@
  * Maximum voltage – maximum battery voltage, V;
  * 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 Main 3 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 case of sealing of the charging or discharging contactors.
--
--The Main contactor algorithm supports the following modes:
--
--* Always on;
--* Automatic;
--* On demand.
--
--In “Always on” mode main contactor closes if all the following is true:
--
--* Charging contactor is open;
--* Discharging contactor is open;
--* There are no errors from the list below:
--** Overcurrent;
--** Undervoltage;
--** Overvoltage;
--** High temperature (CH);
--** High temperature (DCH);
--** Unallowable charging;
--** Critical error.
--
--In “Always on” mode main contactor opens if all the following is true:
--
--* Charging contactor is open;
--* Discharging contactor is open;
--* There is an error from the list below:
--** Overcurrent;
--** Undervoltage;
--** Overvoltage;
--** High temperature (CH);
--** High temperature (DCH);
--** Unallowable charging;
--** Critical error.
--
--In “Automatic” mode, the main contactor closes by internal charging and discharging algorithms at the same time with Precharging, Charging and Discharging contactors.
--
--In “On demand” mode, the main contactor closes by external the “Close Main contactor” request.
--
--To change the parameters of the main contactor, select the "Control → Main contactor" section:
--
--[[image:1733322872744-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" 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.
--
  === Cell balancing ===
  Balancing makes the voltage of all cells equal to the minimum cell voltage.

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