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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:23
From version 1.7
edited by Admin
on 2025/02/24 14:10
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To version 7.1
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on 2025/02/26 12:06
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... ... @@ -43,7 +43,46 @@
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 ===
46 46  
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 +
47 47  === Undervoltage ===
48 48  
49 49  The BMS Mini device implements battery protection from too low voltage on the cells.
... ... @@ -50,7 +50,7 @@
50 50  
51 51  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
52 52  
53 -[[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"]]
54 54  
55 55  In this section:
56 56  
... ... @@ -57,6 +57,7 @@
57 57  * Enable – a flag to enable the protection;
58 58  * Minimum cell voltage, V;
59 59  * 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;
60 60  * Delay before setting the error, millisecond;
61 61  * Delay before clearing the error, second;
62 62  * Lock – a flag to block the error until the device is restarted.
... ... @@ -71,7 +71,6 @@
71 71  
72 72  * 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.
73 73  
74 -
75 75  === Overvoltage ===
76 76  
77 77  The BMS Mini device implements battery protection from too high voltage on the cells.
... ... @@ -78,7 +78,7 @@
78 78  
79 79  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
80 80  
81 -[[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"]]
82 82  
83 83  In this section:
84 84  
... ... @@ -85,9 +85,9 @@
85 85  * Enable – a flag to enable the protection;
86 86  * Maximum cell voltage, V;
87 87  * Tolerant cell voltage, V;
127 +* 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;
88 88  * Delay before setting the error, millisecond;
89 89  * Delay before clearing the error, second;
90 -* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
91 91  * Lock – a flag to block the error until the device is restarted.
92 92  
93 93  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
... ... @@ -354,7 +354,6 @@
354 354  * Delay before setting the error, millisecond;
355 355  * Delay before clearing the error, second;
356 356  * Lock – a flag to block the error until the device is restarted.
357 -* Number of cycles – a number of the charging contactor switchings made during battery operation.
358 358  
359 359  If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
360 360  
... ... @@ -366,11 +366,6 @@
366 366  
367 367  * the “Delay before clearing the error” time has passed since the error was generated.
368 368  
369 -(% class="box infomessage" %)
370 -(((
371 -If there is the "CH contactor cycles error" error, the **charging** contactor opens.
372 -)))
373 -
374 374  === Discharge contactor cycles protection ===
375 375  
376 376  The BMS Mini device protects the discharging contactor against frequent switching.
... ... @@ -399,11 +399,6 @@
399 399  
400 400  * the “Delay before clearing the error” time has passed since the error was generated.
401 401  
402 -(% class="box infomessage" %)
403 -(((
404 -If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
405 -)))
406 -
407 407  === Temperature sensors ===
408 408  
409 409  The BMS Mini device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -423,7 +423,7 @@
423 423  
424 424  (% class="box warningmessage" %)
425 425  (((
426 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated and **all contactors open.**
454 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated.
427 427  )))
428 428  
429 429  === WDT reset ===
... ... @@ -446,7 +446,7 @@
446 446  
447 447  (% class="box warningmessage" %)
448 448  (((
449 -If there is the "WDT reset" error, the **“Critical error” **is generated and **all contactors open.**
477 +If there is the "WDT reset" error, the **“Critical error” **is generated.
450 450  )))
451 451  
452 452  === Unallowable charging ===
... ... @@ -474,11 +474,6 @@
474 474  
475 475  * the battery current is zero during the “Delay before clearing the error” time.
476 476  
477 -(% class="box infomessage" %)
478 -(((
479 -If there is the "Unallowable charging" error, the **discharging **contactor opens.
480 -)))
481 -
482 482  === Stuck contactor ===
483 483  
484 484  The BMS Mini device protects contactors against sticking.
... ... @@ -494,7 +494,7 @@
494 494  * Delay before clearing the error, second;
495 495  * Lock – a flag to block the error until the device is restarted.
496 496  
497 -If there is a stuck contactor, the “Stuck contactor” error is generated Error generation conditions:
520 +If there is a stuck contactor, the “Stuck contactor” error is generated. Error generation conditions:
498 498  
499 499  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
500 500  
... ... @@ -565,8 +565,3 @@
565 565  * “Insulation fault”.
566 566  
567 567  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
568 -
569 -(% class="box warningmessage" %)
570 -(((
571 -If there is the “Critical error”, **all contactors open.**
572 -)))
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