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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:23
From version 4.1
edited by Admin
on 2025/02/26 12:01
Change comment: Загрузить новое вложение 1740571296344-411.png
To version 6.3
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on 2025/02/26 12:03
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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.
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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;
108 108  * Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
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