Wiki source code of 3.6 Battery protection
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| author | version | line-number | content |
|---|---|---|---|
| 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. | ||
| 2 | |||
| 3 | == 3.6.1 Overcurrent protection == | ||
| 4 | |||
| 5 | To change the current protection of the battery, select the menu "Protections → Overcurrent protection": | ||
| 6 | |||
| 7 | [[Overcurrent protection settings>>image:1732211959984-118.png||data-xwiki-image-style-alignment="center" height="266" width="386"]] | ||
| 8 | |||
| 9 | |||
| 10 | In this section: | ||
| 11 | |||
| 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. | ||
| 20 | |||
| 21 | As a result of operation of the current protection, the "Overcurrent" error is generated. | ||
| 22 | |||
| 23 | Error generation conditions: | ||
| 24 | |||
| 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. | ||
| 27 | |||
| 28 | Conditions for removing the error: | ||
| 29 | |||
| 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. | ||
| 32 | |||
| 33 | (% class="box infomessage" %) | ||
| 34 | ((( | ||
| 35 | If there is the "Overcurrent" error, the charging relay and discharging relay open. | ||
| 36 | ))) | ||
| 37 | |||
| 38 | == 3.6.2 Undervoltage protection == | ||
| 39 | |||
| 40 | The board implements battery protection from too low or too high voltage on the cells. | ||
| 41 | |||
| 42 | To change the battery protection parameters from low voltage on the cells, select the menu "Protections → Undervoltage protection": | ||
| 43 | |||
| 44 | [[Undervoltage protection settings>>image:1732212212350-294.png||data-xwiki-image-style-alignment="center" height="207" width="359"]] | ||
| 45 | |||
| 46 | In this section: | ||
| 47 | |||
| 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. | ||
| 54 | |||
| 55 | As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated. | ||
| 56 | |||
| 57 | Error generation conditions: | ||
| 58 | |||
| 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. | ||
| 60 | |||
| 61 | Conditions for removing the error: | ||
| 62 | |||
| 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. | ||
| 64 | |||
| 65 | (% class="box infomessage" %) | ||
| 66 | ((( | ||
| 67 | If there is the "Undervoltage" error, the discharging relay opens. | ||
| 68 | ))) | ||
| 69 | |||
| 70 |