Changes for page 3.5 Battery control

Last modified by Admin on 2025/03/10 12:50

From 14.1 to 13.1 From 22.1 to 21.1

From version 21.1

edited by Admin
on 2025/02/19 10:39

Change comment: Загрузить новое вложение 1739961593607-309.png

To version 14.1

edited by Admin
on 2025/01/30 12:42

Change comment: There is no comment for this version

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@@ -4,7 +4,7 @@
  (% data-numbered-headings-start="5" style="--numbered-headings-start: 4;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
  == Battery control ==
--=== Charge control ===
++=== Charging control ===
  There are two relays that serve charging the battery: a charging relay and an allow charging relay. With the help of the allow charging relay, the BMS commands the charger to start or stop charging.
@@ -62,8 +62,8 @@
  * Use specific delays before stopping charging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
  * Switch off the charging relay on errors without delay – a flag to protectively open the charging relay without delay. In the opposite case, when an error is detected, the charging relay opens always with the delay “Delay before stopping charging”;
  * Control the precharging relay – a flag that allows control of the precharging relay;
--* Voltage to clear the “Ready to charge” (hence, the “Allow charging”) signal – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” signal is cleared;
--* Voltage to reset the “Ready to charge” (hence, the “Allow charging”) signal – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” signal is set;
++* Voltage to clear the “Ready to charge” (hence, the “Allow charging”) signal – a threshold voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” signal is cleared;
++* Voltage to reset the “Ready to charge” (hence, the “Allow charging”) signal – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” signal is set;
  * Delay before recharging – a time after which the previously opened the allow charging relay closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0.
  (% class="box infomessage" %)
@@ -73,7 +73,7 @@
 ) the "Delay before recharging" time has passed since the opening of the allow charging relay.
  )))
--=== Discharge control ===
++=== Discharging control ===
  The board has a discharging relay to connect battery to the load.
@@ -110,7 +110,7 @@
  **Note:** In case of errors in the system operation, the opening of the discharging relay is performed either immediately or with a delay T,,off,, (depends on the settings described below).
  )))
--The board supports controlling the precharging relay. The duration of switching on the precharging relay and precharge current threshold before closing the discharging (load) relay are adjustable.
++The board supports controlling the precharging relay. The duration of switching on the precharging relay before closing the discharging (load) relay is adjusted.
  When the power down request occurs, the discharging relay opens after delay T,,off,,. Reclosing the discharging relay is performed if the power down request is removed.
@@ -133,8 +133,8 @@
  * Switch off the discharging relay on errors without delay – a flag to protectively open the discharging relay without delay. In the opposite case, when an error is detected, the discharging relay opens always with the delay “Delay before stopping discharging”.
  * Precharge time – a duration of closing the precharge relay before closing the discharging relay, millisecond;
  * Precharge current threshold to start discharging – a minimum current value to finish precharging and start discharge, A;
--* Voltage to clear the “Ready to discharge” signal – a threshold U,,ocv,, (corrected due to current and cell resistance) 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” signal – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set.
++* Voltage to clear the “Ready to discharge” signal – 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” signal – a tolerant voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set.
  === Discharging (AUX) control ===
@@ -182,44 +182,31 @@
  The BMS Main 2.x has a relay to control 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 contactor.
--The Main contactor algorithm supports the following modes:
++The main contactor closes if there are no errors from the list below:
--* Always on;
--* Automatic;
--* On demand.
++* Overcurrent;
++* Undervoltage;
++* Overvoltage;
++* High temperature (charging);
++* High temperature (discharging);
++* Unallowable charging;
++* Critical error.
--In “Always on” mode main contactor closes if all the following is true:
++The main contactor opens if the charging and discharging relays are opened and any of the following conditions is met:
--* Other contactors are open;
--* There are no errors from the list below:
--** Overcurrent;
--** Undervoltage;
--** Overvoltage;
--** High temperature (charging);
--** High temperature (discharging);
--** Unallowable charging;
--** Critical error.
++* 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 protection" during a set time;
++* voltage of any cell is greater than the maximum cell voltage configured in the section "Protections → Overvoltage protection" during a set time;
++* temperature of any cell is greater than the maximum cell temperature configured in the section "Protections → High temperature protection" during a set time;
++* Critical error stays on during a set time.
--In “Always on” mode main contactor opens if all the following is true:
--
--* Other contactors are open;
--* There is an error from the the list above.
--
--In “Automatic” mode, the main contactor closes and opens 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.
--
  To change the parameters of the main contactor, select the menu "Cells → Main contactor":
--[[image:1739958553206-813.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="179" width="410"]]
++[[image:1732209137414-912.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="132" width="352"]]
  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;
  * 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 reset – a flag for keeping the main contactor opened until the system be reset.

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