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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:23
From version 3.1
edited by Admin
on 2025/02/26 11:58
Change comment: Загрузить новое вложение 1740571132019-848.png
To version 1.4
edited by Admin
on 2024/12/11 13:11
Change comment: Update document after refactoring.

Summary

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Content
... ... @@ -6,12 +6,6 @@
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.
... ... @@ -43,25 +43,11 @@
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 Main 3 device can check if the charging current exceeds the estimated limit based on the [[Charge map>>url:https://docs.movicomelectric.com/bin/view/Battery%20management%20systems/BMS%20Main%203/3.%20Configuration/3.3%20Control/#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 -
55 -In this section:
56 -
57 -* Enable – a flag to enable the protection;
58 -* 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;
59 -* Region 1: Current difference – a value of maximum absolute current diffr, A;
60 -* Region 2: Current difference – a value of maximum relative current excess, A;
61 -* Delay before setting the error, millisecond;
62 -* Delay before clearing the error, second;
63 -* Lock – a flag to block the error until the device is restarted.
64 -
65 65  === Undervoltage ===
66 66  
67 67  The BMS Mini device implements battery protection from too low voltage on the cells.
... ... @@ -89,6 +89,11 @@
89 89  
90 90  * 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.
91 91  
72 +(% class="box infomessage" %)
73 +(((
74 +If there is the "Undervoltage" error, the **discharging **contactor opens.
75 +)))
76 +
92 92  === Overvoltage ===
93 93  
94 94  The BMS Mini device implements battery protection from too high voltage on the cells.
... ... @@ -117,6 +117,11 @@
117 117  
118 118  * 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.
119 119  
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 +
120 120  === Low temperature ===
121 121  
122 122  The BMS Mini device implements battery protection from too low temperature.
... ... @@ -146,6 +146,11 @@
146 146  
147 147  * 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.
148 148  
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 +
149 149  === High temperature ===
150 150  
151 151  The BMS Mini device implements battery protection from too high temperature.
... ... @@ -175,6 +175,11 @@
175 175  
176 176  * 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.
177 177  
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 +
178 178  === Battery cover ===
179 179  
180 180  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -200,7 +200,7 @@
200 200  
201 201  (% class="box warningmessage" %)
202 202  (((
203 -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.**
204 204  )))
205 205  
206 206  === Cell monitor offline ===
... ... @@ -228,7 +228,7 @@
228 228  
229 229  (% class="box warningmessage" %)
230 230  (((
231 -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.**
232 232  )))
233 233  
234 234  === Cell count ===
... ... @@ -257,7 +257,7 @@
257 257  
258 258  (% class="box warningmessage" %)
259 259  (((
260 -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.**
261 261  )))
262 262  
263 263  === Short circuit ===
... ... @@ -289,6 +289,11 @@
289 289  
290 290  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
291 291  
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 +
292 292  === High contactor temperature ===
293 293  
294 294  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.
... ... @@ -352,7 +352,7 @@
352 352  
353 353  (% class="box warningmessage" %)
354 354  (((
355 -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.**
356 356  )))
357 357  
358 358  === Charge contactor cycles ===
... ... @@ -383,6 +383,11 @@
383 383  
384 384  * the “Delay before clearing the error” time has passed since the error was generated.
385 385  
391 +(% class="box infomessage" %)
392 +(((
393 +If there is the "CH contactor cycles error" error, the **charging** contactor opens.
394 +)))
395 +
386 386  === Discharge contactor cycles protection ===
387 387  
388 388  The BMS Mini device protects the discharging contactor against frequent switching.
... ... @@ -411,6 +411,11 @@
411 411  
412 412  * the “Delay before clearing the error” time has passed since the error was generated.
413 413  
424 +(% class="box infomessage" %)
425 +(((
426 +If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
427 +)))
428 +
414 414  === Temperature sensors ===
415 415  
416 416  The BMS Mini device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -430,7 +430,7 @@
430 430  
431 431  (% class="box warningmessage" %)
432 432  (((
433 -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.**
434 434  )))
435 435  
436 436  === WDT reset ===
... ... @@ -453,7 +453,7 @@
453 453  
454 454  (% class="box warningmessage" %)
455 455  (((
456 -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.**
457 457  )))
458 458  
459 459  === Unallowable charging ===
... ... @@ -481,6 +481,11 @@
481 481  
482 482  * the battery current is zero during the “Delay before clearing the error” time.
483 483  
499 +(% class="box infomessage" %)
500 +(((
501 +If there is the "Unallowable charging" error, the **discharging **contactor opens.
502 +)))
503 +
484 484  === Stuck contactor ===
485 485  
486 486  The BMS Mini device protects contactors against sticking.
... ... @@ -496,7 +496,7 @@
496 496  * Delay before clearing the error, second;
497 497  * Lock – a flag to block the error until the device is restarted.
498 498  
499 -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:
500 500  
501 501  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
502 502  
... ... @@ -567,3 +567,8 @@
567 567  * “Insulation fault”.
568 568  
569 569  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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