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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:23
From version 6.2
edited by Admin
on 2025/02/26 12:03
Change comment: There is no comment for this version
To version 1.4
edited by Admin
on 2024/12/11 13:11
Change comment: Update document after refactoring.

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... ... @@ -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.
... ... @@ -43,46 +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 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"]]
51 +[[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 enable the check of voltage correction due to current and cell resistance;
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 +111,11 @@
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  
72 +(% class="box infomessage" %)
73 +(((
74 +If there is the "Undervoltage" error, the **discharging **contactor opens.
75 +)))
76 +
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]]
83 +[[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  
... ... @@ -139,6 +139,11 @@
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  
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 +
142 142  === Low temperature ===
143 143  
144 144  The BMS Mini device implements battery protection from too low temperature.
... ... @@ -168,6 +168,11 @@
168 168  
169 169  * 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.
170 170  
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 +
171 171  === High temperature ===
172 172  
173 173  The BMS Mini device implements battery protection from too high temperature.
... ... @@ -197,6 +197,11 @@
197 197  
198 198  * 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.
199 199  
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 +
200 200  === Battery cover ===
201 201  
202 202  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -222,7 +222,7 @@
222 222  
223 223  (% class="box warningmessage" %)
224 224  (((
225 -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.**
226 226  )))
227 227  
228 228  === Cell monitor offline ===
... ... @@ -250,7 +250,7 @@
250 250  
251 251  (% class="box warningmessage" %)
252 252  (((
253 -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.**
254 254  )))
255 255  
256 256  === Cell count ===
... ... @@ -279,7 +279,7 @@
279 279  
280 280  (% class="box warningmessage" %)
281 281  (((
282 -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.**
283 283  )))
284 284  
285 285  === Short circuit ===
... ... @@ -311,6 +311,11 @@
311 311  
312 312  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
313 313  
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 +
314 314  === High contactor temperature ===
315 315  
316 316  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.
... ... @@ -374,7 +374,7 @@
374 374  
375 375  (% class="box warningmessage" %)
376 376  (((
377 -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.**
378 378  )))
379 379  
380 380  === Charge contactor cycles ===
... ... @@ -405,6 +405,11 @@
405 405  
406 406  * the “Delay before clearing the error” time has passed since the error was generated.
407 407  
391 +(% class="box infomessage" %)
392 +(((
393 +If there is the "CH contactor cycles error" error, the **charging** contactor opens.
394 +)))
395 +
408 408  === Discharge contactor cycles protection ===
409 409  
410 410  The BMS Mini device protects the discharging contactor against frequent switching.
... ... @@ -433,6 +433,11 @@
433 433  
434 434  * the “Delay before clearing the error” time has passed since the error was generated.
435 435  
424 +(% class="box infomessage" %)
425 +(((
426 +If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
427 +)))
428 +
436 436  === Temperature sensors ===
437 437  
438 438  The BMS Mini device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -452,7 +452,7 @@
452 452  
453 453  (% class="box warningmessage" %)
454 454  (((
455 -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.**
456 456  )))
457 457  
458 458  === WDT reset ===
... ... @@ -475,7 +475,7 @@
475 475  
476 476  (% class="box warningmessage" %)
477 477  (((
478 -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.**
479 479  )))
480 480  
481 481  === Unallowable charging ===
... ... @@ -503,6 +503,11 @@
503 503  
504 504  * the battery current is zero during the “Delay before clearing the error” time.
505 505  
499 +(% class="box infomessage" %)
500 +(((
501 +If there is the "Unallowable charging" error, the **discharging **contactor opens.
502 +)))
503 +
506 506  === Stuck contactor ===
507 507  
508 508  The BMS Mini device protects contactors against sticking.
... ... @@ -518,7 +518,7 @@
518 518  * Delay before clearing the error, second;
519 519  * Lock – a flag to block the error until the device is restarted.
520 520  
521 -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:
522 522  
523 523  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
524 524  
... ... @@ -589,3 +589,8 @@
589 589  * “Insulation fault”.
590 590  
591 591  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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