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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:23
From version 4.1
edited by Admin
on 2025/02/26 12:01
Change comment: Загрузить новое вложение 1740571296344-411.png
To version 1.2
edited by Admin
on 2024/12/09 16:56
Change comment: Update document after refactoring.

Summary

Details

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Parent
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1 -Battery management systems.BMS Mini S.3\. Configuration.WebHome
1 +drafts.BMS Mini S BMS Mini 2.3\. Configuration.WebHome
Content
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6 6  
7 7  The BMS Mini device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
8 8  
9 -(% class="box errormessage" %)
10 -(((
11 -**Attention!**
12 -Behavior of contactors at different errors is configured in **corresponding contactor settings**!
13 -)))
14 -
15 15  === Overcurrent ===
16 16  
17 17  The BMS Mini device performs the overcurrent protection depending on current sensor values.
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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 ===
40 +(% class="box infomessage" %)
41 +(((
42 +If there is the "Overcurrent" error, the **charging **and **discharging **contactors open.
43 +)))
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 66  === Undervoltage ===
67 67  
68 68  The BMS Mini device implements battery protection from too low voltage on the cells.
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90 90  
91 91  * 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.
92 92  
72 +(% class="box infomessage" %)
73 +(((
74 +If there is the "Undervoltage" error, the **discharging **contactor opens.
75 +)))
76 +
93 93  === Overvoltage ===
94 94  
95 95  The BMS Mini device implements battery protection from too high voltage on the cells.
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118 118  
119 119  * 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.
120 120  
105 +(% class="box infomessage" %)
106 +(((
107 +If there is the "Overvoltage" error, the **charging **contactor and **discharging **contactor open (if the “Switch off the discharging contactor on error” flag is set).
108 +)))
109 +
121 121  === Low temperature ===
122 122  
123 123  The BMS Mini device implements battery protection from too low temperature.
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147 147  
148 148  * the minimum temperature among all cells of the battery is greater than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
149 149  
139 +(% class="box infomessage" %)
140 +(((
141 +If there is the "Low temperature (CH)" error, the **charging **contactor opens. If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
142 +)))
143 +
150 150  === High temperature ===
151 151  
152 152  The BMS Mini device implements battery protection from too high temperature.
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176 176  
177 177  * the maximum temperature among all cells of the battery is less than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
178 178  
173 +(% class="box infomessage" %)
174 +(((
175 +If there is the "High temperature (CH)" error, the **charging **contactor opens. If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
176 +)))
177 +
179 179  === Battery cover ===
180 180  
181 181  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
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201 201  
202 202  (% class="box warningmessage" %)
203 203  (((
204 -If there is the "Battery cover error", the **“Critical error” **is generated.
203 +If there is the "Battery cover error", the **“Critical error” **is generated **and all contactors open.**
205 205  )))
206 206  
207 207  === Cell monitor offline ===
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229 229  
230 230  (% class="box warningmessage" %)
231 231  (((
232 -If there is the " Cell monitor offline error", the **“Critical error” **is generated.
231 +If there is the " Cell monitor offline error", the **“Critical error” **is generated and** all contactors open.**
233 233  )))
234 234  
235 235  === Cell count ===
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258 258  
259 259  (% class="box warningmessage" %)
260 260  (((
261 -If there is the "Cell count error", the **“Critical error” **is generated.
260 +If there is the "Cell count error", the **“Critical error” **is generated and **all contactors open.**
262 262  )))
263 263  
264 264  === Short circuit ===
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290 290  
291 291  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
292 292  
292 +(% class="box infomessage" %)
293 +(((
294 +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).
295 +)))
296 +
293 293  === High contactor temperature ===
294 294  
295 295  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.
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353 353  
354 354  (% class="box warningmessage" %)
355 355  (((
356 -If there is the “Current sensor error”, the **“Critical error” **is generated.
360 +If there is the “Current sensor error”, the **“Critical error” **is generated and** all contactors open.**
357 357  )))
358 358  
359 359  === Charge contactor cycles ===
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384 384  
385 385  * the “Delay before clearing the error” time has passed since the error was generated.
386 386  
391 +(% class="box infomessage" %)
392 +(((
393 +If there is the "CH contactor cycles error" error, the **charging** contactor opens.
394 +)))
395 +
387 387  === Discharge contactor cycles protection ===
388 388  
389 389  The BMS Mini device protects the discharging contactor against frequent switching.
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412 412  
413 413  * the “Delay before clearing the error” time has passed since the error was generated.
414 414  
424 +(% class="box infomessage" %)
425 +(((
426 +If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
427 +)))
428 +
415 415  === Temperature sensors ===
416 416  
417 417  The BMS Mini device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
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431 431  
432 432  (% class="box warningmessage" %)
433 433  (((
434 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated.
448 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated and **all contactors open.**
435 435  )))
436 436  
437 437  === WDT reset ===
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454 454  
455 455  (% class="box warningmessage" %)
456 456  (((
457 -If there is the "WDT reset" error, the **“Critical error” **is generated.
471 +If there is the "WDT reset" error, the **“Critical error” **is generated and **all contactors open.**
458 458  )))
459 459  
460 460  === Unallowable charging ===
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482 482  
483 483  * the battery current is zero during the “Delay before clearing the error” time.
484 484  
499 +(% class="box infomessage" %)
500 +(((
501 +If there is the "Unallowable charging" error, the **discharging **contactor opens.
502 +)))
503 +
485 485  === Stuck contactor ===
486 486  
487 487  The BMS Mini device protects contactors against sticking.
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497 497  * Delay before clearing the error, second;
498 498  * Lock – a flag to block the error until the device is restarted.
499 499  
500 -If there is a stuck contactor, the “Stuck contactor” error is generated. Error generation conditions:
519 +If there is a stuck contactor, the “Stuck contactor” error is generated Error generation conditions:
501 501  
502 502  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
503 503  
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568 568  * “Insulation fault”.
569 569  
570 570  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
590 +
591 +(% class="box warningmessage" %)
592 +(((
593 +If there is the “Critical error”, **all contactors open.**
594 +)))
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