The invention discloses a bidirectional vehicle-mounted OBC control circuit with a charging and discharging function and a control method thereof, the bidirectional vehicle-mounted OBC control circuit comprises a switch module and a bidirectional vehicle-mounted OBC, the switch module is connected with an external power grid and an internal power grid, the bidirectional vehicle-mounted OBC control circuit has a charging mode, an inversion mode and an AC/AC mode, in the charging mode, the external power grid charges the bidirectional vehicle-mounted OBC through the switch module; in the inversion mode, the bidirectional OBC discharges to an external power grid and/or an internal power grid through the switch module; in the AC/AC mode, an external power grid is connected with an internal power grid through a switch module; the device has slow start and slow start protection, when the OBC is in an in-vehicle discharge mode, the relay connected with the out-vehicle L line is controlled to be in a disconnected state, a vehicle charging port and a circuit are completely disconnected, it can be ensured that no electric shock occurs when a human body makes contact with the charging port, and the safety guarantee is improved; the number of relays is reduced, the rated capacity is reduced, and the size and the cost are effectively reduced.
本发明公开了一种带充放电功能的双向车载OBC控制电路及其控制方法,其包括连接车外电网和车内电网的开关模组,以及双向车载OBC,具有充电模式、逆变模式和AC/AC模式,其中所述充电模式中,车外电网经过开关模组向双向车载OBC充电;所述逆变模式中,双向车载OBC经过开关模组向车外电网和/或车内电网放电;所述AC/AC模式中,车外电网经过开关模组连接车内电网;本发明具有缓启动和缓启动保护,当OBC处于车内放电模式时,控制与车外L线相连的继电器为断开状态,则车辆充电口与电路完全断开,能够确保当人体与充电口接触时不会发生触电,提高了安全保障;继电器的数量减少、额定容量减小,有效的减小体积和降低成本。
Bidirectional vehicle-mounted OBC control circuit with charging and discharging functions and control method thereof
带充放电功能的双向车载OBC控制电路及其控制方法
2023-05-09
Patent
Elektronische Ressource
Chinesisch
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