The invention provides a pulse type vehicle-mounted charger which comprises a charging circuit, a discharging feedback circuit and a control module, the charging circuit is used for being connected with a charging power supply, and a first switching tube and a first interface used for being connected with a power battery are arranged on the charging circuit in series; the discharge feedback circuit is a flyback circuit and comprises a transformer, the primary side of the transformer is connected with the second switching tube in series and then connected with the first interface in parallel toform a discharge loop, and the secondary side of the transformer is connected with the output diode in series and then connected with the first interface in parallel to form a feedback loop; and thecontrol module controls and is connected with the first switching tube and the second switching tube. In the negative pulse discharging stage, electric energy consumed on the resistor in an original vehicle-mounted charger discharging loop is stored through the transformer in the flyback circuit, and in the next positive pulse charging stage, the energy stored by the transformer is fed back to thecharging mother loop to charge the power battery, so that while heating of the charger is reduced, the charging efficiency is improved, and energy is saved.
本发明提供了一种脉冲式车载充电器,该车载充电器包括充电电路、放电回馈电路和控制模块,充电电路用于与充电电源连接,且充电回路上串设有第一开关管和用于连接动力电池的第一接口;放电回馈电路为反激电路,包括变压器,变压器的原边与第二开关管串联后与第一接口并联形成放电回路,所述变压器的副边与输出二极管串联后与第一接口并联形成回馈回路;控制模块控制连接第一开关管和第二开关管。本发明在负脉冲放电阶段中,将原本车载充电器放电回路中消耗在电阻上的电能通过反激电路中的变压器进行储存,并在下一个正脉冲充电阶段,将变压器存储的能量反馈到充电母回路上对动力电池充电,在减少充电器发热的同时,提高充电效率,节约了能源。
Pulse type vehicle-mounted charger
一种脉冲式车载充电器
2021-03-09
Patent
Electronic Resource
Chinese
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