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Changes for page 3.4 Protections

Last modified by Admin on 2025/11/10 11:45
From version 6.5
edited by Admin
on 2025/02/26 12:06
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To version 18.1
edited by Admin
on 2025/11/10 11:10
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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 enable the check of voltage correction due to current and cell resistance;
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;
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 enable the check of voltage correction due to current and cell resistance;
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;
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.
... ... @@ -139,6 +139,33 @@
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 +
142 142  === Low temperature ===
143 143  
144 144  The BMS Mini device implements battery protection from too low temperature.
... ... @@ -410,7 +410,7 @@
410 410  
411 411  To change the protection parameters against high frequency switching of the discharging contactor, select the "Protections → Discharging contactor cycles" section:
412 412  
413 -[[image:1733748068420-615.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="139" width="800"]]
440 +[[image:1740571600741-802.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="128" width="800"]]
414 414  
415 415  In this section:
416 416  
... ... @@ -420,7 +420,6 @@
420 420  * Delay before setting the error, millisecond;
421 421  * Delay before clearing the error, second;
422 422  * Lock – a flag to block the error until the device is restarted.
423 -* Number of cycles – a number of the charging contactor switchings made during battery operation.
424 424  
425 425  If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
426 426  
... ... @@ -521,6 +521,11 @@
521 521  
522 522  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
523 523  
550 +(% class="box warningmessage" %)
551 +(((
552 +If there is the "Stuck contactor" error, the **“Critical error” **is generated.
553 +)))
554 +
524 524  === Contactor feedback ===
525 525  
526 526  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.
... ... @@ -540,6 +540,11 @@
540 540  
541 541  * a command for charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
542 542  
574 +(% class="box warningmessage" %)
575 +(((
576 +If there is the "Contactor feedback" error, the **“Critical error” **is generated.
577 +)))
578 +
543 543  === Insulation ===
544 544  
545 545  The BMS Mini device can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
... ... @@ -546,11 +546,15 @@
546 546  
547 547  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
548 548  
549 -[[image:1733748083469-478.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
585 +[[image:1740573733492-485.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="119" width="800"]]
550 550  
551 551  In this section:
552 552  
553 553  * Enable – a flag to enable the protection;
590 +* Checking algorithm – isolation checking mode:
591 +** Always on – check is always performed;
592 +** On charging – check is performed only if “Charger connected” or “Charge request” is set;
593 +** Except charging - check is performed only if “Charger connected” and “Charge request” are cleared;
554 554  * Delay before setting the error, second;
555 555  * Delay before clearing the error, second;
556 556  * Lock – a flag to block the error until the device is restarted.
... ... @@ -557,6 +557,11 @@
557 557  
558 558  Error is set if corresponding discrete input is set up and it receives logical zero.
559 559  
600 +(% class="box warningmessage" %)
601 +(((
602 +If there is the "Insulation" error, the **“Critical error” **is generated.
603 +)))
604 +
560 560  === Critical error ===
561 561  
562 562  To change the critical error parameters, select the "Protections → Critical error" section:
... ... @@ -570,21 +570,29 @@
570 570  * Delay before clearing the error, second;
571 571  * Lock – a flag to block the error until the device is restarted.
572 572  
573 -The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
618 +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.
574 574  
575 -* “Battery cover error”;
576 -* “Cell monitor offline”;
577 -* “Cell count error”;
578 -* “ADC error”;
579 -* “Current sensor error”;
580 -* “Shunt offline”;
581 -* “Shunt error”;
582 -* “No temp. sensors”;
583 -* “Temp. sensor is shorted”;
584 -* “Settings error”;
585 -* “WDT reset”;
586 -* “Stuck contactor”;
587 -* “Contactor feedback error”;
588 -* “Insulation fault”.
589 -
590 590  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
621 +
622 +=== General error ===
623 +
624 +To change the general error parameters, select the "Protections → Critical error" section:
625 +
626 +[[image:1740573914327-561.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="129" width="800"]]
627 +
628 +In this section:
629 +
630 +* Enable – a flag to enable the protection;
631 +* Delay before setting the error, millisecond;
632 +* Delay before clearing the error, second;
633 +* Lock – a flag to block the error until the device is restarted;
634 +* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
635 +
636 +The “General error” is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
637 +
638 +The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
639 +
640 +(% class="box warningmessage" %)
641 +(((
642 +The state of the “General error” can be assigned to a discrete output or to a power switch.
643 +)))
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