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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 8.2
edited by Admin
on 2024/12/26 14:44
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To version 2.1
edited by Admin
on 2024/12/04 16:33
Change comment: There is no comment for this version

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1 -Battery management systems.BMS Main 3.3\. Configuration.WebHome
1 +drafts.bms-main-3.3\. Settings.WebHome
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1 1  (% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
2 -= Configuration =
2 += SettingsThe BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.The BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage. =
3 3  
4 4  (% data-numbered-headings-start="4" style="--numbered-headings-start: 3;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
5 5  == Protections ==
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42 42  If there is the "Overcurrent" error, the **charging **and **discharging **contactors open.
43 43  )))
44 44  
45 -=== Charge current limit ===
46 -
47 -TBA
48 -
49 -=== Discharge current limit ===
50 -
51 -TBA
52 -
53 53  === Undervoltage ===
54 54  
55 55  The BMS Main 3 device implements battery protection from too low voltage on the cells.
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56 56  
57 57  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
58 58  
59 -[[image:1735224224155-829.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
51 +[[image:1733328382380-760.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
60 60  
61 61  In this section:
62 62  
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63 63  * Enable – a flag to enable the protection;
64 64  * Minimum cell voltage, V;
65 65  * Tolerant cell voltage, V;
66 -* Check the open circuit voltage instead of the actual voltage;
67 67  * Delay before setting the error, millisecond;
68 68  * Delay before clearing the error, second;
69 69  * Lock – a flag to block the error until the device is restarted.
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278 278  If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
279 279  )))
280 280  
281 -=== Logic high temperature ===
272 +=== High Logic temperature ===
282 282  
283 283  To change the overheating protection parameters of BMS Logic devices, select the "Protections → High Logic temperature" section:
284 284  
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303 303  
304 304  * a BMS Logic device temperature is less than the “Tolerant temperature” value.
305 305  
306 -(% class="box infomessage" %)
297 +(% class="box warningmessage" %)
307 307  (((
308 -Cell balancing is disabled on Logic devices with high temperature.
299 +Overheated Logic devices do not balance cells.
309 309  )))
310 310  
311 311  === Logic offline ===
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512 512  If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
513 513  )))
514 514  
515 -=== Power fault ===
516 -
517 -TBA
518 -
519 519  === Charge contactor cycles ===
520 520  
521 521  The BMS Main 3 device protects the charging contactor against frequent switching.
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548 548  If there is the "CH contactor cycles error" error, the **charging **contactor opens.
549 549  )))
550 550  
551 -=== Discharge contactor cycles ===
538 +=== ​​​​​​​Discharge contactor cycles ===
552 552  
553 553  The BMS Main 3 device protects the discharging contactor against frequent switching.
554 554  
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599 599  
600 600  (% class="box warningmessage" %)
601 601  (((
602 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
589 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**​​​​​​​
603 603  )))
604 604  
605 605  === WDT reset ===
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625 625  If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
626 626  )))
627 627  
628 -=== Unallowable charging ===
615 +=== ​​​​​​​Unallowable charging ===
629 629  
630 630  The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging contactor to prevent unallowable battery operation.
631 631  
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655 655  If there is the "Unallowable charging" error, the **discharging **contactor opens.
656 656  )))
657 657  
658 -=== Stuck contactor ===
645 +=== ​​​​​​​Stuck contactor ===
659 659  
660 660  The BMS Main 3 device protects contactors against sticking.
661 661  
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705 705  If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
706 706  )))
707 707  
708 -=== Insulation ===
695 +=== ​​​​​​​Precharge ===
709 709  
697 +BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors. To change the pre-charge monitoring parameters, select the "Protections → Precharge" section:
698 +
699 +[[image:1733328487097-648.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="99" width="800"]]
700 +
701 +In this section:
702 +
703 +* Enable – a flag to enable the protection;
704 +* Delay before setting the error, millisecond;
705 +* Delay before clearing the error, second;
706 +* Lock – a flag to block the error until the device is restarted.
707 +
708 +As a result of the protection algorithms the “Precharge error” is generated. Error generation conditions:
709 +
710 +* precharging process cannot be finished (the precharge current does not decrease or voltages before and after contactors are not equal) during the “Delay before setting the error” time.
711 +
712 +(% class="box infomessage" %)
713 +(((
714 +If there is the “Precharge error”, **charging **and **discharging **contactors open.
715 +)))
716 +
717 +=== ​​​​​​​Insulation ===
718 +
710 710  The BMS Main 3 device can detect a physical signal or CAN bus message from an external insulation monitoring device (such as Bender IR155, iso165C, BMD IMD) to monitor the insulation quality.
711 711  
712 712  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
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796 796  If there is the “Critical error”, **all **contactors open.
797 797  )))
798 798  
799 -=== General error ===
808 +=== ​​​​​​​General error ===
800 800  
801 801  To change the general error parameters, select the "Protections → Critical error" section:
802 802  
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