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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:23
From version 3.2
edited by Admin
on 2025/02/26 12:00
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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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63 63  * Delay before clearing the error, second;
64 64  * Lock – a flag to block the error until the device is restarted.
65 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 +
66 66  === Undervoltage ===
67 67  
68 68  The BMS Mini device implements battery protection from too low voltage on the cells.
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69 69  
70 70  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
71 71  
72 -[[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"]]
73 73  
74 74  In this section:
75 75  
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76 76  * Enable – a flag to enable the protection;
77 77  * Minimum cell voltage, V;
78 78  * 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;
79 79  * Delay before setting the error, millisecond;
80 80  * Delay before clearing the error, second;
81 81  * Lock – a flag to block the error until the device is restarted.
... ... @@ -96,7 +96,7 @@
96 96  
97 97  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
98 98  
99 -[[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"]]
100 100  
101 101  In this section:
102 102  
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103 103  * Enable – a flag to enable the protection;
104 104  * Maximum cell voltage, V;
105 105  * 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;
106 106  * Delay before setting the error, millisecond;
107 107  * Delay before clearing the error, second;
108 -* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
109 109  * Lock – a flag to block the error until the device is restarted.
110 110  
111 111  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
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372 372  * Delay before setting the error, millisecond;
373 373  * Delay before clearing the error, second;
374 374  * Lock – a flag to block the error until the device is restarted.
375 -* Number of cycles – a number of the charging contactor switchings made during battery operation.
376 376  
377 377  If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
378 378  
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