The invention discloses an electric energy metering device and method for an electric vehicle charging pile, and the method comprises the steps: collecting a charging voltage signal at a charging plugthrough a voltage sampling module, and obtaining the charging voltage data; sending the charging voltage data to a main processing module in a micro-power wireless communication mode by using a micro-power module; acquiring a current signal output by the charging power supply by using an operational amplifier module to obtain output current data; and calculating actual electric energy by utilizing a main processing module according to the charging voltage data and the output current data. Compared with a traditional electric automobile charging pile electric energy metering device, the electric automobile charging pile electric energy metering device solves the problem that the electric energy metering position and the theoretical trade settlement position of an electric automobile charging pile participating in trade settlement are not unified in the charging process, and meanwhile metering errors caused by charging cable voltage losses are reduced; and the charging pile electric energy metering accuracy is improved.
本发明公开了一种电动汽车充电桩的电能计量装置及方法,利用电压采样模块对充电插头处的充电电压信号进行采集,获取充电电压数据;利用微功率模块通过微功率无线通讯的方式将所述充电电压数据发送至主处理模块;利用运放模块对充电电源输出的电流信号进行采集,获取输出电流数据;利用主处理模块根据所述充电电压数据和输出电流数据计算实际电能量。本发明相较于传统电动汽车充电桩电能计量装置,解决了目前参与贸易结算的电动汽车充电桩在充电过程中电能计量位置与理论上贸易结算位置不统一的问题,同时也降低了充电电缆电压损耗造成的计量误差,提高充电桩电能计量的准确性。
Electric energy metering device and method for electric automobile charging pile
一种电动汽车充电桩的电能计量装置及方法
2021-03-26
Patent
Electronic Resource
Chinese
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