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Changes for page 3.4 Protections

Last modified by Admin on 2025/11/10 11:45
From version 18.1
edited by Admin
on 2025/11/10 11:10
Change comment: There is no comment for this version
To version 1.6
edited by Admin
on 2025/02/24 14:09
Change comment: There is no comment for this version

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... ... @@ -43,46 +43,7 @@
43 43  * the current is positive (charging) or zero, and its modulo value is less than the “Tolerant charging current” value for the “Delay before clearing the error” time;
44 44  * the current is negative (discharging), and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
45 45  
46 -=== Charge current limit ===
47 47  
48 -The BMS Mini device can check if the charging current exceeds the estimated limit based on the [[Charge map>>doc:Battery management systems.BMS Mini S.3\. Configuration.3\.3 Control.WebHome||anchor="HChargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
49 -
50 -Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
51 -
52 -To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
53 -
54 -[[image:1740571132019-848.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="143" width="800"]]
55 -
56 -In this section:
57 -
58 -* Enable – a flag to enable the protection;
59 -* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
60 -* Region 1: Current difference – a value of maximum absolute current difference, A;
61 -* Region 2: Current difference – a value of maximum relative current excess, A;
62 -* Delay before setting the error, millisecond;
63 -* Delay before clearing the error, second;
64 -* Lock – a flag to block the error until the device is restarted.
65 -
66 -=== Discharge current limit ===
67 -
68 -The BMS Mini device can check if the discharging current exceeds the estimated limit based on the [[Discharge map>>doc:Battery management systems.BMS Mini S.3\. Configuration.3\.3 Control.WebHome||anchor="HDischargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
69 -
70 -Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
71 -
72 -To change the overcurrent protection of the battery, select the "Protections → Discharge current limit" section:
73 -
74 -[[image:1740571296344-411.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="151" width="800"]]
75 -
76 -In this section:
77 -
78 -* Enable – a flag to enable the protection;
79 -* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
80 -* Region 1: Current difference – a value of maximum absolute current difference, A;
81 -* Region 2: Current difference – a value of maximum relative current excess, A;
82 -* Delay before setting the error, millisecond;
83 -* Delay before clearing the error, second;
84 -* Lock – a flag to block the error until the device is restarted.
85 -
86 86  === Undervoltage ===
87 87  
88 88  The BMS Mini device implements battery protection from too low voltage on the cells.
... ... @@ -89,7 +89,7 @@
89 89  
90 90  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
91 91  
92 -[[image:1740571345293-460.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
53 +[[image:1733748033237-837.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
93 93  
94 94  In this section:
95 95  
... ... @@ -96,7 +96,6 @@
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;
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.
... ... @@ -111,6 +111,7 @@
111 111  
112 112  * the minimum voltage among all cells of the battery is greater than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
113 113  
74 +
114 114  === Overvoltage ===
115 115  
116 116  The BMS Mini device implements battery protection from too high voltage on the cells.
... ... @@ -117,7 +117,7 @@
117 117  
118 118  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
119 119  
120 -[[image:1740571383842-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="147" width="800"]]
81 +[[image:1733748033238-995.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
121 121  
122 122  In this section:
123 123  
... ... @@ -124,9 +124,9 @@
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;
128 128  * Delay before setting the error, millisecond;
129 129  * Delay before clearing the error, second;
90 +* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
130 130  * Lock – a flag to block the error until the device is restarted.
131 131  
132 132  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
... ... @@ -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.
... ... @@ -277,7 +277,7 @@
277 277  
278 278  (% class="box warningmessage" %)
279 279  (((
280 -If there is the " Cell monitor offline error", the **“Critical error” **is generated.
214 +If there is the " Cell monitor offline error", the **“Critical error” **is generated and** all contactors open.**
281 281  )))
282 282  
283 283  === Cell count ===
... ... @@ -306,7 +306,7 @@
306 306  
307 307  (% class="box warningmessage" %)
308 308  (((
309 -If there is the "Cell count error", the **“Critical error” **is generated.
243 +If there is the "Cell count error", the **“Critical error” **is generated and **all contactors open.**
310 310  )))
311 311  
312 312  === Short circuit ===
... ... @@ -338,6 +338,11 @@
338 338  
339 339  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
340 340  
275 +(% class="box infomessage" %)
276 +(((
277 +If there is the "Short circuit" error, the **charging **contactor opens (the “Switch off the charging contactor on error” flag is set) and the **discharging **contactor opens (the “Switch off the discharging contactor on error flag” is set).
278 +)))
279 +
341 341  === High contactor temperature ===
342 342  
343 343  The BMS Mini device protects power contactors from overheating. To measure the temperature of the contactor, one of the thermistors connected to the X6 connector is used.
... ... @@ -401,7 +401,7 @@
401 401  
402 402  (% class="box warningmessage" %)
403 403  (((
404 -If there is the “Current sensor error”, the **“Critical error” **is generated.
343 +If there is the “Current sensor error”, the **“Critical error” **is generated and** all contactors open.**
405 405  )))
406 406  
407 407  === Charge contactor cycles ===
... ... @@ -420,6 +420,7 @@
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.
362 +* Number of cycles – a number of the charging contactor switchings made during battery operation.
423 423  
424 424  If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
425 425  
... ... @@ -431,6 +431,11 @@
431 431  
432 432  * the “Delay before clearing the error” time has passed since the error was generated.
433 433  
374 +(% class="box infomessage" %)
375 +(((
376 +If there is the "CH contactor cycles error" error, the **charging** contactor opens.
377 +)))
378 +
434 434  === Discharge contactor cycles protection ===
435 435  
436 436  The BMS Mini device protects the discharging contactor against frequent switching.
... ... @@ -437,7 +437,7 @@
437 437  
438 438  To change the protection parameters against high frequency switching of the discharging contactor, select the "Protections → Discharging contactor cycles" section:
439 439  
440 -[[image:1740571600741-802.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="128" width="800"]]
385 +[[image:1733748068420-615.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="139" width="800"]]
441 441  
442 442  In this section:
443 443  
... ... @@ -447,6 +447,7 @@
447 447  * Delay before setting the error, millisecond;
448 448  * Delay before clearing the error, second;
449 449  * Lock – a flag to block the error until the device is restarted.
395 +* Number of cycles – a number of the charging contactor switchings made during battery operation.
450 450  
451 451  If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
452 452  
... ... @@ -458,6 +458,11 @@
458 458  
459 459  * the “Delay before clearing the error” time has passed since the error was generated.
460 460  
407 +(% class="box infomessage" %)
408 +(((
409 +If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
410 +)))
411 +
461 461  === Temperature sensors ===
462 462  
463 463  The BMS Mini device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -477,7 +477,7 @@
477 477  
478 478  (% class="box warningmessage" %)
479 479  (((
480 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated.
431 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated and **all contactors open.**
481 481  )))
482 482  
483 483  === WDT reset ===
... ... @@ -500,7 +500,7 @@
500 500  
501 501  (% class="box warningmessage" %)
502 502  (((
503 -If there is the "WDT reset" error, the **“Critical error” **is generated.
454 +If there is the "WDT reset" error, the **“Critical error” **is generated and **all contactors open.**
504 504  )))
505 505  
506 506  === Unallowable charging ===
... ... @@ -528,6 +528,11 @@
528 528  
529 529  * the battery current is zero during the “Delay before clearing the error” time.
530 530  
482 +(% class="box infomessage" %)
483 +(((
484 +If there is the "Unallowable charging" error, the **discharging **contactor opens.
485 +)))
486 +
531 531  === Stuck contactor ===
532 532  
533 533  The BMS Mini device protects contactors against sticking.
... ... @@ -543,15 +543,10 @@
543 543  * Delay before clearing the error, second;
544 544  * Lock – a flag to block the error until the device is restarted.
545 545  
546 -If there is a stuck contactor, the “Stuck contactor” error is generated. Error generation conditions:
502 +If there is a stuck contactor, the “Stuck contactor” error is generated Error generation conditions:
547 547  
548 548  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
549 549  
550 -(% class="box warningmessage" %)
551 -(((
552 -If there is the "Stuck contactor" error, the **“Critical error” **is generated.
553 -)))
554 -
555 555  === Contactor feedback ===
556 556  
557 557  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.
... ... @@ -571,11 +571,6 @@
571 571  
572 572  * a command for charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
573 573  
574 -(% class="box warningmessage" %)
575 -(((
576 -If there is the "Contactor feedback" error, the **“Critical error” **is generated.
577 -)))
578 -
579 579  === Insulation ===
580 580  
581 581  The BMS Mini device can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
... ... @@ -582,15 +582,11 @@
582 582  
583 583  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
584 584  
585 -[[image:1740573733492-485.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="119" width="800"]]
531 +[[image:1733748083469-478.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
586 586  
587 587  In this section:
588 588  
589 589  * 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;
594 594  * Delay before setting the error, second;
595 595  * Delay before clearing the error, second;
596 596  * Lock – a flag to block the error until the device is restarted.
... ... @@ -597,11 +597,6 @@
597 597  
598 598  Error is set if corresponding discrete input is set up and it receives logical zero.
599 599  
600 -(% class="box warningmessage" %)
601 -(((
602 -If there is the "Insulation" error, the **“Critical error” **is generated.
603 -)))
604 -
605 605  === Critical error ===
606 606  
607 607  To change the critical error parameters, select the "Protections → Critical error" section:
... ... @@ -615,29 +615,26 @@
615 615  * Delay before clearing the error, second;
616 616  * Lock – a flag to block the error until the device is restarted.
617 617  
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.
555 +The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
619 619  
557 +* “Battery cover error”;
558 +* “Cell monitor offline”;
559 +* “Cell count error”;
560 +* “ADC error”;
561 +* “Current sensor error”;
562 +* “Shunt offline”;
563 +* “Shunt error”;
564 +* “No temp. sensors”;
565 +* “Temp. sensor is shorted”;
566 +* “Settings error”;
567 +* “WDT reset”;
568 +* “Stuck contactor”;
569 +* “Contactor feedback error”;
570 +* “Insulation fault”.
571 +
620 620  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
621 621  
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 -
640 640  (% class="box warningmessage" %)
641 641  (((
642 -The state of the “General error” can be assigned to a discrete output or to a power switch.
576 +If there is the “Critical error”, **all contactors open.**
643 643  )))
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