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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 6.4
edited by Admin
on 2025/02/26 12:04
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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.
... ... @@ -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.**
455 +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.**
478 +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:
521 +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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