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Wiki source code of 3.6 Battery protection

Version 3.3 by Admin on 2024/11/21 18:05
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Admin 1.1 1 The BMS Main 2.x board continuously monitors the state of the cells, BMS Logic boards, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
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3 == 3.6.1 Overcurrent protection ==
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5 To change the current protection of the battery, select the menu "Protections → Overcurrent protection":
Admin 2.2 6
Admin 2.3 7 [[Overcurrent protection settings>>image:1732211959984-118.png||data-xwiki-image-style-alignment="center" height="266" width="386"]]
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9
10 In this section:
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12 * Enable – a flag to enable the protection;
13 * Maximum charging current, А;
14 * Tolerant charging current, А;
15 * Maximum discharging current, А;
16 * Tolerant discharging current, А;
17 * Delay before setting the error, second;
18 * Delay before clearing the error, second;
19 * Lock the error until the device is reset – a flag to block the error until the board is restarted.
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21 As a result of operation of the current protection, the "Overcurrent" error is generated.
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23 Error generation conditions:
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25 * the current is positive (charging), and its modulo value is greater than the “Maximum charging current” value for the “Delay before setting the error” time;
26 * the current is negative (discharging), and its modulo value is greater than the “Maximum discharging current” value for the “Delay before setting the error” time.
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28 Conditions for removing the error:
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30 * 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;
31 * 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.
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33 (% class="box infomessage" %)
34 (((
35 If there is the "Overcurrent" error, the charging relay and discharging relay open.
36 )))
Admin 3.2 37
38 == 3.6.2 Undervoltage protection ==
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40 The board implements battery protection from too low or too high voltage on the cells.
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42 To change the battery protection parameters from low voltage on the cells, select the menu "Protections → Undervoltage protection":
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Admin 3.3 44 [[Undervoltage protection settings>>image:1732212212350-294.png||data-xwiki-image-style-alignment="center" height="207" width="359"]]
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46 In this section:
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48 * Enable – a flag to enable the protection;
49 * Minimum cell voltage, V;
50 * Tolerant cell voltage, V;
51 * Delay before setting the error, second;
52 * Delay before clearing the error, second;
53 * Lock the error until the device is reset.
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55 As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
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57 Error generation conditions:
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59 * the minimum voltage among all cells of the battery is less than the “Minimum cell voltage” value for the “Delay before setting the error” time.
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61 Conditions for removing the error:
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63 * 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.
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65 (% class="box infomessage" %)
66 (((
67 If there is the "Undervoltage" error, the discharging relay opens.
68 )))
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