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Changes for page 3.4 Protections

Last modified by Admin on 2025/11/10 11:45
From version 25.1
edited by Admin
on 2025/11/10 11:21
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To version 8.2
edited by Admin
on 2025/02/26 12:43
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... ... @@ -96,7 +96,7 @@
96 96  * Enable – a flag to enable the protection;
97 97  * Minimum cell voltage, V;
98 98  * Tolerant cell voltage, V;
99 -* 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 instead of measured value;
99 +* 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;
100 100  * Delay before setting the error, millisecond;
101 101  * Delay before clearing the error, second;
102 102  * Lock – a flag to block the error until the device is restarted.
... ... @@ -124,7 +124,7 @@
124 124  * Enable – a flag to enable the protection;
125 125  * Maximum cell voltage, V;
126 126  * Tolerant cell voltage, V;
127 -* 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 instead of measured value;
127 +* 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;
128 128  * Delay before setting the error, millisecond;
129 129  * Delay before clearing the error, second;
130 130  * Lock – a flag to block the error until the device is restarted.
... ... @@ -139,33 +139,6 @@
139 139  
140 140  * 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.
141 141  
142 -=== Cell imbalance ===
143 -
144 -The BMS Mini S 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.
145 -
146 -To change the battery protection parameters from cell imbalance, select the "Protections → Cell imbalance" section:
147 -
148 -[[image:1762772978976-565.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="800"]]
149 -
150 -In this section:
151 -
152 -* Enable – a flag to enable the protection;
153 -* Maximum cell imbalance, V;
154 -* Tolerant cell imbalance, V;
155 -* Delay before setting the error, millisecond;
156 -* Delay before clearing the error, second;
157 -* Lock – a flag to block the error until the device is restarted.
158 -
159 -As a result of the operation of the battery protection from cell imbalance, the "Cell imbalance” error is generated.
160 -
161 -Error generation conditions:
162 -
163 -* 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.
164 -
165 -Conditions for removing the error:
166 -
167 -* the voltage difference between the most charged cell and the least charged cell is less than the “Tolerant cell imbalance” value for the “Delay before clearing the error” time.
168 -
169 169  === Low temperature ===
170 170  
171 171  The BMS Mini device implements battery protection from too low temperature.
... ... @@ -309,35 +309,6 @@
309 309  If there is the "Cell count error", the **“Critical error” **is generated.
310 310  )))
311 311  
312 -=== Temperature sensor count ===
313 -
314 -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:
315 -
316 -[[image:1762773073782-768.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]]
317 -
318 -In this section:
319 -
320 -* Enable – a flag to enable the protection;
321 -* Number of cells – a number of temperature sensors connected to the BMS;
322 -* Delay before setting the error, millisecond;
323 -* Delay before clearing the error, second;
324 -* Lock – a flag to block the error until the device is restarted.
325 -
326 -As a result of the operation of the protection from the mismatch of the number of cells, the "T-sensor count error" is generated.
327 -
328 -Error generation conditions:
329 -
330 -* 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.
331 -
332 -Conditions for removing the error:
333 -
334 -* 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.
335 -
336 -(% class="box warningmessage" %)
337 -(((
338 -If there is the "T-sensor count error", the **“Critical error” **is generated**.**
339 -)))
340 -
341 341  === Short circuit ===
342 342  
343 343  The BMS Mini device implements a protection of power circuits (contactors, power wires) against overheating caused by the flow of high current for a long time.
... ... @@ -433,24 +433,6 @@
433 433  If there is the “Current sensor error”, the **“Critical error” **is generated.
434 434  )))
435 435  
436 -=== MOSFET ===
437 -
438 -BMS Mini S device checks the status of MOSFET switches that are used to control the contactors. To change the parameters of the MOSFET switch protection, select the "Protections → MOSFET " section:
439 -
440 -[[image:1762773566548-852.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
441 -
442 -In this section:
443 -
444 -* Delay before clearing the error, second;
445 -* Lock – a flag to block the error until the device is restarted.
446 -
447 -The “MOSFET error” occurs when the device detects a shortage in contactor coil control circuit or an overheating of the MOSFET switch. Error is removed when the temperature of MOSFET switch is normal during “Delay before clearing the error” time.
448 -
449 -(% class="box warningmessage" %)
450 -(((
451 -If there is the "MOSFET error", the **“Critical error” **is generated.
452 -)))
453 -
454 454  === Charge contactor cycles ===
455 455  
456 456  The BMS Mini device protects the charging contactor against frequent switching.
... ... @@ -478,7 +478,7 @@
478 478  
479 479  * the “Delay before clearing the error” time has passed since the error was generated.
480 480  
481 -=== Discharge contactor cycles ===
407 +=== Discharge contactor cycles protection ===
482 482  
483 483  The BMS Mini device protects the discharging contactor against frequent switching.
484 484  
... ... @@ -594,11 +594,6 @@
594 594  
595 595  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
596 596  
597 -(% class="box warningmessage" %)
598 -(((
599 -If there is the "Stuck contactor" error, the **“Critical error” **is generated.
600 -)))
601 -
602 602  === Contactor feedback ===
603 603  
604 604  The BMS Mini device can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, the feedback signal must be connected to corresponding contactor feedback pin on X1 header.
... ... @@ -618,11 +618,6 @@
618 618  
619 619  * a command for charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
620 620  
621 -(% class="box warningmessage" %)
622 -(((
623 -If there is the "Contactor feedback" error, the **“Critical error” **is generated.
624 -)))
625 -
626 626  === Insulation ===
627 627  
628 628  The BMS Mini device can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
... ... @@ -644,11 +644,6 @@
644 644  
645 645  Error is set if corresponding discrete input is set up and it receives logical zero.
646 646  
647 -(% class="box warningmessage" %)
648 -(((
649 -If there is the "Insulation" error, the **“Critical error” **is generated.
650 -)))
651 -
652 652  === Critical error ===
653 653  
654 654  To change the critical error parameters, select the "Protections → Critical error" section:
... ... @@ -662,29 +662,21 @@
662 662  * Delay before clearing the error, second;
663 663  * Lock – a flag to block the error until the device is restarted.
664 664  
665 -The "Critical error" signal is generated if at least one of the critical errors (see [[Errors>>doc:Battery management systems.Additional information.1\. Battery controllers\: signals and errors.WebHome||anchor="HErrors"]]) is generated during the “Delay before setting the error” time.
576 +The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
666 666  
667 -The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
578 +* “Battery cover error”;
579 +* “Cell monitor offline”;
580 +* “Cell count error”;
581 +* “ADC error”;
582 +* “Current sensor error”;
583 +* “Shunt offline”;
584 +* “Shunt error”;
585 +* “No temp. sensors”;
586 +* “Temp. sensor is shorted”;
587 +* “Settings error”;
588 +* “WDT reset”;
589 +* “Stuck contactor”;
590 +* “Contactor feedback error”;
591 +* “Insulation fault”.
668 668  
669 -=== General error ===
670 -
671 -To change the general error parameters, select the "Protections → Critical error" section:
672 -
673 -[[image:1740573914327-561.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="129" width="800"]]
674 -
675 -In this section:
676 -
677 -* Enable – a flag to enable the protection;
678 -* Delay before setting the error, millisecond;
679 -* Delay before clearing the error, second;
680 -* Lock – a flag to block the error until the device is restarted;
681 -* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
682 -
683 -The “General error” is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
684 -
685 -The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
686 -
687 -(% class="box warningmessage" %)
688 -(((
689 -The state of the “General error” can be assigned to a discrete output or to a power switch.
690 -)))
593 +The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
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