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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:23
From version 2.2
edited by Admin
on 2025/02/26 11:58
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To version 7.2
edited by Admin
on 2025/02/26 12:07
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45 45  
46 46  === Charge current limit ===
47 47  
48 -The BMS Main 3 device can check if the charging current exceeds the estimated limit based on the [[Charge map>>url:https://docs.movicomelectric.com/bin/view/Battery%20management%20systems/BMS%20Main%203/3.%20Configuration/3.3%20Control/#HChargemap]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
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 49  
50 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 51  
52 52  To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
53 53  
54 +[[image:1740571132019-848.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="143" width="800"]]
54 54  
55 55  In this section:
56 56  
57 57  * Enable – a flag to enable the protection;
58 58  * 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;
59 -* Region 1: Current difference – a value of maximum absolute current diffr, A;
60 +* Region 1: Current difference – a value of maximum absolute current difference, A;
60 60  * Region 2: Current difference – a value of maximum relative current excess, A;
61 61  * Delay before setting the error, millisecond;
62 62  * Delay before clearing the error, second;
63 63  * Lock – a flag to block the error until the device is restarted.
64 64  
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 +
65 65  === Undervoltage ===
66 66  
67 67  The BMS Mini device implements battery protection from too low voltage on the cells.
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68 68  
69 69  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
70 70  
71 -[[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"]]
72 72  
73 73  In this section:
74 74  
... ... @@ -75,6 +75,7 @@
75 75  * Enable – a flag to enable the protection;
76 76  * Minimum cell voltage, V;
77 77  * 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;
78 78  * Delay before setting the error, millisecond;
79 79  * Delay before clearing the error, second;
80 80  * Lock – a flag to block the error until the device is restarted.
... ... @@ -95,7 +95,7 @@
95 95  
96 96  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
97 97  
98 -[[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"]]
99 99  
100 100  In this section:
101 101  
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102 102  * Enable – a flag to enable the protection;
103 103  * Maximum cell voltage, V;
104 104  * 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;
105 105  * Delay before setting the error, millisecond;
106 106  * Delay before clearing the error, second;
107 -* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
108 108  * Lock – a flag to block the error until the device is restarted.
109 109  
110 110  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
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371 371  * Delay before setting the error, millisecond;
372 372  * Delay before clearing the error, second;
373 373  * Lock – a flag to block the error until the device is restarted.
374 -* Number of cycles – a number of the charging contactor switchings made during battery operation.
375 375  
376 376  If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
377 377  
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389 389  
390 390  To change the protection parameters against high frequency switching of the discharging contactor, select the "Protections → Discharging contactor cycles" section:
391 391  
392 -[[image:1733748068420-615.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="139" width="800"]]
413 +[[image:1740571600741-802.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="128" width="800"]]
393 393  
394 394  In this section:
395 395  
... ... @@ -399,7 +399,6 @@
399 399  * Delay before setting the error, millisecond;
400 400  * Delay before clearing the error, second;
401 401  * Lock – a flag to block the error until the device is restarted.
402 -* Number of cycles – a number of the charging contactor switchings made during battery operation.
403 403  
404 404  If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
405 405  
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