The invention aims to provide the battery series bidirectional charging and discharging device which is simple in structure, meets the charging/discharging requirements of a battery swap station on the battery module, improves the charging/discharging efficiency and reduces the investment cost, and the working method of the device. The battery series bidirectional charging and discharging device comprises a bidirectional AC/DC main module, a first auxiliary unidirectional AC/DC charging module, a second auxiliary unidirectional AC/DC charging module, a first battery module and a second battery module, and the bidirectional AC/DC main module is connected with a power grid and charges the two battery modules. The first auxiliary one-way AC/DC charging module and the second auxiliary one-way AC/DC charging module carry out auxiliary charging on the two battery modules and control the two battery modules to discharge at the same time. The working method of the battery series bidirectional charging and discharging device comprises a charging mode and a discharging mode, the charging mode is that the power grid charges the two battery modules, and the discharging mode is that the two battery modules discharge the power grid. The method can be applied to the technical field of quick charging.

    本发明旨在提供一种结构简单、满足换电站对电池模组的充/放电需求,提高充/放电效率、降低投资成本的电池串联双向充放电装置及该装置的工作方法。电池串联双向充放电装置包括双向AC/DC主模块、第一辅助单向AC/DC充电模块、第二辅助单向AC/DC充电模块、第一电池模组和第二电池模组,双向AC/DC主模块接电网并对两个电池模组进行充电,第一辅助单向AC/DC充电模块、第二辅助单向AC/DC充电模块对两个电池模组辅助充电同时控制两个电池模组放电;电池串联双向充放电装置的工作方法包括充电模式和放电模式,充电模式为电网对两个电池模组充电,放电模式为两个电池模组对电网放电。本发明可应用于快速充电的技术领域。


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    Title :

    Battery series bidirectional charging and discharging device and working method thereof


    Additional title:

    一种电池串联双向充放电装置及其工作方法


    Contributors:
    LI XIAOBIN (author) / LIU JIAZHANG (author)

    Publication date :

    2022-07-15


    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 / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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