Changes for page 3.4 Protections

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

From 7.4 to 7.3 From 18.1 to 17.1

From version 17.1

edited by Admin
on 2025/04/04 11:59

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To version 7.4

edited by Admin
on 2025/02/28 15:01

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@@ -168,11 +168,11 @@
  Error generation conditions:
--* more than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main X device within “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 removing the error:
--* less than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main X device within “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" %)
  (((
@@ -209,11 +209,6 @@
  * 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.
--(% class="box infomessage" %)
--(((
--If there is the “Voltage unbalance (CH)” or "Voltage unbalance (DCH)" error, **corresponding battery module do not close its contactors while joining  to charge of discharge**.
--)))
--
  === Current unbalance (in “Balancing” state) ===
  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.
@@ -220,7 +220,7 @@
  Protection against current unbalance of battery modules is configured in the section "Protections - Current unbalance":
--[[image:Battery management systems.BMS Main 3X.3\. Configuration.3\.4 Protections.WebHome@1734090244843-403.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="116" width="800"]]
++[[image:1734356793451-440.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
  In this section:
@@ -228,25 +228,19 @@
  * 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.
++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:
--Conditions for generating the error:
++* current of the battery module is greater than the "Maximum current" value during the "Delay before setting the error" time.
--* the 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.
--(% class="box infomessage" %)
--(((
--If there is the “Current unbalance (CH)” or "Current unbalance (DCH)" error, **corresponding battery module opens its charging or discharging contactor**.
--)))
++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.
@@ -262,10 +262,8 @@
  * Delay before clearing the error;
  * Lock – a flag to block the error until the device is restarted.
--As a result of the operation of the protection the “Charging current unbalance” are generated.
++As a result of the operation of the protection the “Charging current unbalance” are generated. Conditions for generating the errors:
--Conditions for generating the errors:
--
  * battery module is not included in the largest group of modules whose charge currents differ from each other by no more than "Delta current" during the "Delay before setting the error" time.
  Conditions for clearing the error:
@@ -272,10 +272,7 @@
  * battery module is included in the largest group of modules with similar charge currents during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the “Charging current unbalance” error, **corresponding battery module opens its charging contactor**.
--)))
++If there is the “Charging current unbalance” error, the battery module charging contactor opens.
  === Discharging current unbalance ===
@@ -293,10 +293,8 @@
  * Delay before clearing the error;
  * Lock – a flag to block the error until the device is restarted.
--As a result of the operation of the protection the “Discharging current unbalance” are generated.
++As a result of the operation of the protection the “Discharging current unbalance” are generated. Conditions for generating the errors:
--Conditions for generating the errors:
--
  * battery module is not included in the largest group of modules whose discharge currents differ from each other by no more than "Delta current" during the "Delay before setting the error" time.
  Conditions for clearing the error:
@@ -303,77 +303,33 @@
  * battery module is included in the largest group of modules with similar discharge currents during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the “Discharging current unbalance” error, **corresponding battery module opens its discharging contactor**.
--)))
++If there is the “Discharging current unbalance” error, the battery module discharging contactor opens.
--=== High contactor temperature ===
++=== Critical error ===
--The BMS Main X device protects power contactors from overheating. To measure the temperature of the contactor, one of the thermistors connected to the X5 connector is used.
++Parameters for generating the critical error are configured in the "Protections - Critical error" section:
--To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
++[[image:1734356802719-477.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="69" width="600"]]
--[[image:1740756362809-292.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
--
  In this section:
--* Enable – a flag to enable the protection;
--* Thermistor – a selection of which cell thermistor will be used as contactor temperature sensor;
--* Maximum contactor temperature, °C;
--* Tolerant contactor temperature, °C;
--* Delay before setting the error, second;
--* Delay before clearing the error, second;
++* 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.
--If there is a contactor overheat, the "High contactor temperature" error is generated.
++The critical error flag is generated if at least one of the following errors persists during the "Delay before setting the error" time:
--Error generation conditions:
++* «Battery cover»;
++* «Insulation fault»;
++* «CH contactor feedback error»;
++* «DCH contactor feedback error»;
++* «CH/DCH contactor feedback error»;
++* «Module offline».
--* the contactor temperature is greater than the “Maximum contactor temperature” value during the “Delay before setting the error” time.
++The critical error flag is cleared if there are no errors from the list above during the "Delay before clearing the error" time.
--Conditions for removing the error:
--
--* the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
--
--=== WDT reset ===
--
--If the BMS firmware hangs, the watchdog timer resets the device. The BMS can detect that the device was reset and generates the “WDT reset” error.
--
--To change the parameters of the watchdog protection, select the "Protections → WDT reset" section:
--
--[[image:Battery management systems.BMS Main 3X.3\. Configuration.3\.4 Protections.WebHome@1734090244845-157.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="93" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--Conditions for removing the error:
--
--* the “Delay before clearing the error” time has passed from the device startup.
--
  (% class="box warningmessage" %)
  (((
--If there is the "WDT reset" error, **“Critical error” is generated.**
++**When the critical error flag is present, all battery contactors open.**
  )))
--
--=== Critical error ===
--
--Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
--
--To change the critical error parameters, select the "Protections → Critical error" section:
--
--[[image:1740756532131-419.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="118" width="800"]]
--
--In this section:
--
--* 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.
--
--The "Critical error" signal is generated if at least one of the critical errors (see [[Errors>>doc:Battery management systems.Additional information.2\. Strings controllers\: signals and errors.WebHome||anchor="HErrors"]]) is generated during the “Delay before setting the error” time.
--
--The “Critical error" signal is cleared if there are no errors from the list above during the “Delay before clearing the error” time.

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