Wiki source code of 3.5 Battery control
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| author | version | line-number | content |
|---|---|---|---|
| 1 | == 3.5.1 Charge control == | ||
| 2 | |||
| 3 | There are two relays that serve charging the battery: a charging relay and an allow charging relay. With the help of the allow charging relay, the BMS commands the charger to start or stop charging. | ||
| 4 | |||
| 5 | The board supports two charge control algorithms: | ||
| 6 | |||
| 7 | * charging is always allowed; | ||
| 8 | * charging is allowed when there is a signal “Charger connected”. | ||
| 9 | |||
| 10 | If you select the "charging is always allowed" algorithm, the charging relay and the allow charging relay are always closed. If at least one of the errors appears: | ||
| 11 | |||
| 12 | * Overvoltage; | ||
| 13 | * Overcurrent; | ||
| 14 | * High temperature; | ||
| 15 | * Low temperature; | ||
| 16 | * HYG offline (optional); | ||
| 17 | * Combilift offline (optional); | ||
| 18 | * Spirit offline (optional); | ||
| 19 | * Spirit charger error (optional); | ||
| 20 | * Short circuit (optional); | ||
| 21 | * Contactor high temperature (optional); | ||
| 22 | * CH contactor cycles error; | ||
| 23 | * Critical error, | ||
| 24 | |||
| 25 | both relays are open (no current flows). | ||
| 26 | |||
| 27 | When the algorithm "charging is allowed when there is a signal “Charger connected”" is selected, the relay control is performed as follows: | ||
| 28 | |||
| 29 | * If there is a signal “Charger connected” and there are no errors (see the list above), then through the delay time T,,on,, the charging relay and the allow charging relay close; | ||
| 30 | * If the signal “Charger connected” disappears, the allow charging relay opens and after the delay time T,,off,, the charging relay opens; | ||
| 31 | * If in the process of charging the voltage on the cell exceeds the EV level, the allow charging relay opens (while the charging relay remains closed); | ||
| 32 | * If errors in the list above occur the charging relay and allow charging relay open. | ||
| 33 | |||
| 34 | (% class="box infomessage" %) | ||
| 35 | ((( | ||
| 36 | **Note:** When errors occur in the system, the charging relay opens either immediately or with the delay T,,off,, (depends on the settings described below). | ||
| 37 | ))) | ||
| 38 | |||
| 39 | When the power down request occurs, the allow charging relay opens immediately and the charging relay opens after the delay T,,off,,. Reclosing the charging relay and allow charging relay is performed if the power down request is removed. | ||
| 40 | |||
| 41 | To change the parameters of the battery charge control algorithm, select the menu "Cells → Charging control": |