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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:23
From version 1.96
edited by Admin
on 2025/02/24 15:39
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To version 6.5
edited by Admin
on 2025/02/26 12:06
Change comment: There is no comment for this version

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... ... @@ -43,6 +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 ===
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 +
46 46  === Undervoltage ===
47 47  
48 48  The BMS Mini device implements battery protection from too low voltage on the cells.
... ... @@ -49,7 +49,7 @@
49 49  
50 50  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
51 51  
52 -[[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"]]
53 53  
54 54  In this section:
55 55  
... ... @@ -56,6 +56,7 @@
56 56  * Enable – a flag to enable the protection;
57 57  * Minimum cell voltage, V;
58 58  * 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;
59 59  * Delay before setting the error, millisecond;
60 60  * Delay before clearing the error, second;
61 61  * Lock – a flag to block the error until the device is restarted.
... ... @@ -76,7 +76,7 @@
76 76  
77 77  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
78 78  
79 -[[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"]]
80 80  
81 81  In this section:
82 82  
... ... @@ -83,9 +83,9 @@
83 83  * Enable – a flag to enable the protection;
84 84  * Maximum cell voltage, V;
85 85  * 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;
86 86  * Delay before setting the error, millisecond;
87 87  * Delay before clearing the error, second;
88 -* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
89 89  * Lock – a flag to block the error until the device is restarted.
90 90  
91 91  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
... ... @@ -352,7 +352,6 @@
352 352  * Delay before setting the error, millisecond;
353 353  * Delay before clearing the error, second;
354 354  * Lock – a flag to block the error until the device is restarted.
355 -* Number of cycles – a number of the charging contactor switchings made during battery operation.
356 356  
357 357  If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
358 358  
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