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Changes for page 3.4 Protections

Last modified by Admin on 2025/10/14 10:27
From version 43.4
edited by Admin
on 2025/10/14 10:26
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To version 27.3
edited by Admin
on 2025/02/26 12:45
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... ... @@ -94,7 +94,7 @@
94 94  * Enable – a flag to enable the protection;
95 95  * Minimum cell voltage, V;
96 96  * Tolerant cell voltage, V;
97 -* Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage;
97 +* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
98 98  * Delay before setting the error, millisecond;
99 99  * Delay before clearing the error, second;
100 100  * Lock – a flag to block the error until the device is restarted.
... ... @@ -122,7 +122,7 @@
122 122  * Enable – a flag to enable the protection;
123 123  * Maximum cell voltage, V;
124 124  * Tolerant cell voltage, V;
125 -* Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage;
125 +* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
126 126  * Delay before setting the error, millisecond;
127 127  * Delay before clearing the error, second;
128 128  * Lock – a flag to block the error until the device is restarted.
... ... @@ -137,31 +137,6 @@
137 137  
138 138  * the maximum voltage among all cells of the battery is less than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
139 139  
140 -=== Cell imbalance ===
141 -
142 -The BMS Main 3 device implements battery protection from too much cell imbalance. If balancing algorithm is not enough to compensate battery imbalance, then imbalance protection generates an error when imbalance is above estimated threshold.
143 -
144 -To change the battery protection parameters from cell imbalance, select the "Protections → Cell imbalance" section:
145 -
146 -[[image:1760437465709-702.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="133" width="800"]]In this section:
147 -
148 -* Enable – a flag to enable the protection;
149 -* Maximum cell imbalance, V;
150 -* Tolerant cell imbalance, V;
151 -* Delay before setting the error, millisecond;
152 -* Delay before clearing the error, second;
153 -* Lock – a flag to block the error until the device is restarted.
154 -
155 -As a result of the operation of the battery protection from cell imbalance, the "Cell imbalance” error is generated.
156 -
157 -Error generation conditions:
158 -
159 -* the voltage difference between the most charged cell and the least charged cell is more than the “Maximum cell imbalance” value for the “Delay before setting the error” time.
160 -
161 -Conditions for removing the error:
162 -
163 -* the minimum temperature among all cells of the battery is greater than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
164 -
165 165  === Low temperature ===
166 166  
167 167  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -346,14 +346,11 @@
346 346  
347 347  To change the protection parameters from loss of communication with BMS Logic devices, select the "Protections → Logic offline" section:
348 348  
349 -[[image:1755871522789-489.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
324 +[[image:1733328399416-818.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="86" width="800"]]
350 350  
351 -
352 352  In this section:
353 353  
354 354  * Enable – a flag to enable the protection;
355 -* Delay before setting the error, second;
356 -* Delay before clearing the error, second;
357 357  * Lock – lock the error until the device is reset.
358 358  
359 359  As a result of the protection from loss of communication with BMS Logic devices, the "Logic offline" error is generated.
... ... @@ -400,35 +400,6 @@
400 400  If there is the "Cell count error", the **“Critical error” **is generated**.**
401 401  )))
402 402  
403 -=== Temperature sensor count ===
404 -
405 -To change the protection parameters from the mismatch of the number of temperature sensors to the set value, select the "Protections → Temperature sensor count" section:
406 -
407 -[[image:1755871582533-550.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
408 -
409 -In this section:
410 -
411 -* Enable – a flag to enable the protection;
412 -* Number of cells – a number of temperature sensors connected to the BMS;
413 -* Delay before setting the error, millisecond;
414 -* Delay before clearing the error, second;
415 -* Lock – a flag to block the error until the device is restarted.
416 -
417 -As a result of the operation of the protection from the mismatch of the number of cells, the "T-sensor count error" is generated.
418 -
419 -Error generation conditions:
420 -
421 -* the number of temperature sensors connected to the BMS is **not equal** to the “Number of temperature sensors” value during the “Delay before setting the error” time.
422 -
423 -Conditions for removing the error:
424 -
425 -* the number of temperature sensors connected to the BMS is **equal** to the “Number of temperature sensors” value during the “Delay before clearing the error” time.
426 -
427 -(% class="box warningmessage" %)
428 -(((
429 -If there is the "T-sensor count error", the **“Critical error” **is generated**.**
430 -)))
431 -
432 432  === Logic count ===
433 433  
434 434  To change the protection parameters from the mismatch of the number of BMS Logic devices to the set value, select the "Protections → Logic count” section:
... ... @@ -820,37 +820,6 @@
820 820  If there is the “HVIL error”, the **“Critical error”** is generated.
821 821  )))
822 822  
823 -=== Battery voltage ===
824 -
825 -The BMS Main 3 allows to control the difference between sum of all cell voltages and voltage measured before the contactors.
826 -
827 -To change the voltage difference check parameters, select the "Protections → Battery voltage" section:
828 -
829 -[[image:1755871661259-633.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="100" width="800"]]
830 -
831 -In this section:
832 -
833 -* Enable – a flag to enable the protection;
834 -* Abnormal voltage difference – a maximum difference between sum of all cell voltages and voltage measured before the contactors (High voltage 1), V;
835 -* Delay before setting the error, second;
836 -* Delay before clearing the error, second;
837 -* Lock – a flag to block the error until the device is restarted.
838 -
839 -If there is a mismatch between voltages, "Battery voltage mismatch" error is generated.
840 -
841 -Error generation conditions:
842 -
843 -* difference between sum of all cell voltages and voltage measured before the contactors is **more **than "Abnormal voltage difference" value during "Delay before setting the error" time.
844 -
845 -Conditions for removing the error:
846 -
847 -* difference between sum of all cell voltages and voltage measured before the contactors is **less **than "Abnormal voltage difference" value during "Delay before clearing the error" time.
848 -
849 -(% class="box warningmessage" %)
850 -(((
851 -If there is the “Battery voltage mismatch” error, the **“Critical error”** is generated.
852 -)))
853 -
854 854  === Critical error ===
855 855  
856 856  Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
... ... @@ -884,7 +884,7 @@
884 884  * Lock – a flag to block the error until the device is restarted;
885 885  * Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
886 886  
887 -The “General error”is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
799 +The general error flag is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
888 888  
889 889  The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
890 890  
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