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Changes for page 3.4 Protections

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... ... @@ -71,8 +71,18 @@
71 71  
72 72  To change the overcurrent protection of the battery, select the "Protections → Discharge current limit" section:
73 73  
74 -[[image:1740571296344-411.png]]
74 +[[image:1740571296344-411.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="151" width="800"]]
75 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 +
76 76  === Undervoltage ===
77 77  
78 78  The BMS Mini device implements battery protection from too low voltage on the cells.
... ... @@ -79,7 +79,7 @@
79 79  
80 80  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
81 81  
82 -[[image:1733748033237-837.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
92 +[[image:1740571345293-460.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
83 83  
84 84  In this section:
85 85  
... ... @@ -86,6 +86,7 @@
86 86  * Enable – a flag to enable the protection;
87 87  * Minimum cell voltage, V;
88 88  * 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;
89 89  * Delay before setting the error, millisecond;
90 90  * Delay before clearing the error, second;
91 91  * Lock – a flag to block the error until the device is restarted.
... ... @@ -106,7 +106,7 @@
106 106  
107 107  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
108 108  
109 -[[image:1733748033238-995.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
120 +[[image:1740571383842-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="147" width="800"]]
110 110  
111 111  In this section:
112 112  
... ... @@ -113,9 +113,9 @@
113 113  * Enable – a flag to enable the protection;
114 114  * Maximum cell voltage, V;
115 115  * 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;
116 116  * Delay before setting the error, millisecond;
117 117  * Delay before clearing the error, second;
118 -* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
119 119  * Lock – a flag to block the error until the device is restarted.
120 120  
121 121  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
... ... @@ -128,6 +128,33 @@
128 128  
129 129  * 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.
130 130  
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 +
131 131  === Low temperature ===
132 132  
133 133  The BMS Mini device implements battery protection from too low temperature.
... ... @@ -271,6 +271,35 @@
271 271  If there is the "Cell count error", the **“Critical error” **is generated.
272 272  )))
273 273  
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 +
274 274  === Short circuit ===
275 275  
276 276  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.
... ... @@ -382,7 +382,6 @@
382 382  * Delay before setting the error, millisecond;
383 383  * Delay before clearing the error, second;
384 384  * Lock – a flag to block the error until the device is restarted.
385 -* Number of cycles – a number of the charging contactor switchings made during battery operation.
386 386  
387 387  If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
388 388  
... ... @@ -394,13 +394,13 @@
394 394  
395 395  * the “Delay before clearing the error” time has passed since the error was generated.
396 396  
397 -=== Discharge contactor cycles protection ===
463 +=== Discharge contactor cycles ===
398 398  
399 399  The BMS Mini device protects the discharging contactor against frequent switching.
400 400  
401 401  To change the protection parameters against high frequency switching of the discharging contactor, select the "Protections → Discharging contactor cycles" section:
402 402  
403 -[[image:1733748068420-615.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="139" width="800"]]
469 +[[image:1740571600741-802.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="128" width="800"]]
404 404  
405 405  In this section:
406 406  
... ... @@ -410,7 +410,6 @@
410 410  * Delay before setting the error, millisecond;
411 411  * Delay before clearing the error, second;
412 412  * Lock – a flag to block the error until the device is restarted.
413 -* Number of cycles – a number of the charging contactor switchings made during battery operation.
414 414  
415 415  If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
416 416  
... ... @@ -511,6 +511,11 @@
511 511  
512 512  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
513 513  
579 +(% class="box warningmessage" %)
580 +(((
581 +If there is the "Stuck contactor" error, the **“Critical error” **is generated.
582 +)))
583 +
514 514  === Contactor feedback ===
515 515  
516 516  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.
... ... @@ -530,6 +530,11 @@
530 530  
531 531  * a command for charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
532 532  
603 +(% class="box warningmessage" %)
604 +(((
605 +If there is the "Contactor feedback" error, the **“Critical error” **is generated.
606 +)))
607 +
533 533  === Insulation ===
534 534  
535 535  The BMS Mini device can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
... ... @@ -536,11 +536,15 @@
536 536  
537 537  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
538 538  
539 -[[image:1733748083469-478.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
614 +[[image:1740573733492-485.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="119" width="800"]]
540 540  
541 541  In this section:
542 542  
543 543  * Enable – a flag to enable the protection;
619 +* Checking algorithm – isolation checking mode:
620 +** Always on – check is always performed;
621 +** On charging – check is performed only if “Charger connected” or “Charge request” is set;
622 +** Except charging - check is performed only if “Charger connected” and “Charge request” are cleared;
544 544  * Delay before setting the error, second;
545 545  * Delay before clearing the error, second;
546 546  * Lock – a flag to block the error until the device is restarted.
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547 547  
548 548  Error is set if corresponding discrete input is set up and it receives logical zero.
549 549  
629 +(% class="box warningmessage" %)
630 +(((
631 +If there is the "Insulation" error, the **“Critical error” **is generated.
632 +)))
633 +
550 550  === Critical error ===
551 551  
552 552  To change the critical error parameters, select the "Protections → Critical error" section:
... ... @@ -560,21 +560,29 @@
560 560  * Delay before clearing the error, second;
561 561  * Lock – a flag to block the error until the device is restarted.
562 562  
563 -The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
647 +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.
564 564  
565 -* “Battery cover error”;
566 -* “Cell monitor offline”;
567 -* “Cell count error”;
568 -* “ADC error”;
569 -* “Current sensor error”;
570 -* “Shunt offline”;
571 -* “Shunt error”;
572 -* “No temp. sensors”;
573 -* “Temp. sensor is shorted”;
574 -* “Settings error”;
575 -* “WDT reset”;
576 -* “Stuck contactor”;
577 -* “Contactor feedback error”;
578 -* “Insulation fault”.
579 -
580 580  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
650 +
651 +=== General error ===
652 +
653 +To change the general error parameters, select the "Protections → Critical error" section:
654 +
655 +[[image:1740573914327-561.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="129" width="800"]]
656 +
657 +In this section:
658 +
659 +* Enable – a flag to enable the protection;
660 +* Delay before setting the error, millisecond;
661 +* Delay before clearing the error, second;
662 +* Lock – a flag to block the error until the device is restarted;
663 +* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
664 +
665 +The “General error” is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
666 +
667 +The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
668 +
669 +(% class="box warningmessage" %)
670 +(((
671 +The state of the “General error” can be assigned to a discrete output or to a power switch.
672 +)))
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