Changes for page 3.4 Protections

Last modified by Admin on 2025/06/11 15:57

From 5.2 to 5.1 From 8.3 to 8.2

From version 8.2

edited by Admin
on 2025/02/28 15:22

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To version 5.2

edited by Admin
on 2025/02/28 14:56

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@@ -154,68 +154,61 @@
  Protection against loss of communication with battery modules is configured in the "Protections - Module offline" section:
--[[image:1740754588971-137.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="118" width="800"]]
++[[image:1734356793441-881.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="75" width="600"]]
  In this section:
--* Enable – a flag to enable the protection;
--* Number of offline modules to set the error;
--* Delay before setting the error, second;
--* Delay before clearing the error, second;
--* Lock – lock the error until the device is reset.
++* Enable – a flag to enable the protection;
++* Delay before setting the error;
++* Delay before clearing the error;
++* Lock – a flag to block the error until the device is restarted.
--As a result of the protection from loss of communication with battery modules, the "Module offline" error is generated.
++As a result of the protection against loss of communication with the battery module, the “Module offline” error is generated. Conditions for generating the error:
--Error generation conditions:
++* at least one of the battery modules does not respond to commands within the "Delay before setting the error" time.
--* more than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main 3X device within “Delay before setting the error” time.
++Conditions for clearing the error:
--Conditions for removing the error:
++* all battery modules respond to commands within the "Delay before clearing the error" time.
--* less than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main 3X device within “Delay before clearing the error” time.
--
  (% class="box warningmessage" %)
  (((
--If there is the "Module offline" error, **“Critical error” is generated.**
++If there is the "Module offline" error, **the critical error flag is generated and all battery contactors open.**
  )))
--=== Voltage unbalance (in any state) ===
++=== Voltage unbalance ===
  Before closing the contactors for charging and discharging battery modules, the BMS Main X device detects those modules whose voltage is significantly different from the rest. For unbalanced modules, errors "Voltage unbalance (CH)" (charge circuit) and "Voltage unbalance (DCH)" (discharge circuit) are generated.
--Protection against voltage unbalance of battery modules is configured in the section "Protections - Voltage unbalance (in any state)":
++Protection against voltage unbalance of battery modules is configured in the section "Protections - Voltage unbalance":
--[[image:1740754732291-420.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
++[[image:1734356793449-249.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="75" width="600"]]
  In this section:
  * Enable – a flag to enable the protection;
  * Delta voltage – maximum allowable voltage difference of battery modules, V;
--* Use the open circuit voltage to detect the error – a flag to enable U,,ocv,, correction;
  * Delay before setting the error;
  * Delay before clearing the error;
--* Set the 'Voltage unbalance' error for the modules that are not ready to charge/discharge;
  * Lock – a flag to block the error until the device is restarted.
--As a result of the operation of the voltage unbalance protection the errors “Voltage unbalance (CH)” and “Voltage unbalance (DCH)” are generated.
++As a result of the operation of the voltage unbalance protection the errors “Voltage unbalance (CH)” and “Voltage unbalance (DCH)” are generated. Conditions for generating the error:
--Conditions for generating the error:
++* battery module is not included in the largest group of modules whose voltages differ from each other by no more than "Delta voltage" during the "Delay before setting the error" time.
--* battery module is not included in the largest group of modules whose voltages differ from each other by no more than "Delta voltage" during the "Delay before setting the error" time;
--* module is not ready to charge or discharge;
--
  Conditions for clearing the error:
--* battery module is in the largest group of balanced modules during the "Delay before clearing the error" time;
--* module is ready to charge or discharge.
++* battery module is in the largest group of balanced modules during the "Delay before clearing the error" time.
--=== Current unbalance (in “Balancing” state) ===
++If there is the error "Voltage unbalance (CH)" ("Voltage unbalance (DCH)"), the charging (discharging) contactor of the battery module opens.
++=== Current unbalance ===
++
  When battery modules are connected in parallel, the most charged modules transfer charge to the least charged modules. The process of charge transfer is accompanied by the flow of balancing currents. The BMS Main X device detects modules with high balancing currents and generates “Current unbalance (CH)” (charge circuit) and “Current unbalance (DCH)” (discharge circuit) errors for them.
  Protection against current unbalance of battery modules is configured in the section "Protections - Current unbalance":
--[[image:1734356793451-440.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
++[[image:1734356793451-440.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="77" width="600"]]
  In this section:
@@ -223,20 +223,19 @@
  * Maximum current – a maximum allowable self-balancing current of battery modules, A;
  * Delay before setting the error;
  * Delay before clearing the error;
--* Check all the time (not only in the ‘Balancing’ state) – a flag to enable voltage check not only in “Balancing” state;
  * Lock – a flag to block the error until the device is restarted.
  As a result of the operation of the current unbalance protection the errors “Current unbalance (CH)” and “Current unbalance (DCH)” are generated. Conditions for generating the error:
--* the current of the battery module is greater than the "Maximum current" value during the "Delay before setting the error" time.
++* current of the battery module is greater than the "Maximum current" value during the "Delay before setting the error" time.
  Conditions for clearing the error:
--* the current of the battery module is less than the "Maximum current" value during the "Delay before clearing the error" time.
++* current of the battery module is less than the "Maximum current" value during the "Delay before clearing the error" time.
  If there is the error "Current unbalance (CH)" ("Current unbalance (DCH)"), the charging (discharging) contactor of the battery module opens.
--=== Charging current unbalance (in “Charging” state) ===
++=== Charging current unbalance ===
  During battery charging, the currents of the battery modules may vary. The BMS Main X device detects modules whose charging currents are significantly different from the currents of other modules and generates the “Charging current unbalance” errors for them.

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