The invention relates to a double-direct-current power supply series-parallel connection switching circuit and a charging system. The circuit comprises a direct-current power supply A, a direct-current power supply B, a diode D1, a diode D2 and a switch K1. A positive electrode of the direct-current power supply A is connected with a negative electrode of the diode D1, and the negative electrode of the direct-current power supply A is connected with the negative electrode of the diode D2 and one end of the switch K1; the positive electrode of the direct-current power supply B is connected withthe positive electrode of the diode D1 and the other end of the switch K1, and the negative electrode of the direct-current power supply B is connected with the positive electrode of the diode D2; and the positive electrode of the direct-current power supply A and the negative electrode of the direct-current power supply B serve as output ends. In the invention, convenient and stable series-parallel connection switching of the two direct-current power supplies is realized, economical efficiency is high, series-parallel connection switching between the power supplies with different rated voltages can be realized, current backflow is prevented, and damage of circuit circulation is avoided.

    本发明涉及一种双直流电源串并联切换电路及充电系统,所述电路包括直流电源A、直流电源B、二极管D1、二极管D2和开关K1,所述直流电源A的正极与二极管D1的负极连接,直流电源A的负极分别与二极管D2的负极、开关K1的一端连接;所述直流电源B的正极分别与二极管D1的正极、开关K1的另一端连接,直流电源B的负极与二极管D2的正极连接;直流电源A的正极和直流电源B的负极均作为输出端。本发明实现两个直流电源的便捷、稳定的串并联切换,且经济性高,并能够实现不同额定电压的电源之间的串并联切换,防止电流倒灌,避免电路环流的危害。


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    Title :

    Double-direct-current power supply series-parallel connection switching circuit and charging system


    Additional title:

    一种双直流电源串并联切换电路及充电系统


    Contributors:

    Publication date :

    2020-05-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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