The invention relates to an electric vehicle (1) having a plurality of battery modules (B1, B2) which are electrically connected in parallel and have the same nominal module voltage; a determination device (3) for determining at least one battery state parameter (V (B1), V (B2)) representative of at least one state of charge of the battery module; a switching system (4), which is designed to individually switch the current paths of the respective battery modules (B1, B2) on or off; an energy management system (7) which actuates the switching system and which is designed to control the switching system when the state of charge (V (B2)) of at least one of the battery modules (B1, B2) is significantly lower than the state of charge (V (B1)) of at least one other of the battery modules (B1, B2). The current path of the at least one battery module (B2) having the lower state of charge (V (B2)) is switched to be blocked during the driving operation of the electric vehicle (1) until the state of charge (V (B1)) of the at least one battery module (B1) having the higher state of charge (V (B2)) has been equalized with the state of charge of the at least one battery module (B2) having the lower state of charge (V (B2)), and switching the current path of the at least one battery module (B2) having the lower state of charge (V (B1)) to be conductive.

    本发明涉及一种电动车(1),具有:多个电池模块(Bl,B2),其电并联连接且具有相同的标称模块电压;确定设备(3),用于确定代表电池模块的至少一个荷电状态的至少一个电池状态参数(V(B1),V(B2));切换系统(4),其设计用于将各电池模块(B1,B2)的电流路径单独地切换成导通的或阻断的;操控切换系统的能量管理系统(7),其设计用于,当电池模块(B1,B2)中的至少一个电池模块所具有的荷电状态(V(B2))明显低于电池模块(B1,B2)中的另外的至少一个电池模块的荷电状态(V(B1))时,将具有较低荷电状态(V(B2))的所述至少一个电池模块(B2)的电流路径在电动车(1)的行驶运行期间切换成阻断的,直至具有较高荷电状态(V(B2))的所述至少一个电池模块(B1)的荷电状态(V(B1))与具有较低荷电状态(V(B2))的所述至少一个电池模块(B2)的荷电状态已达到均衡,并且这时将具有较低荷电状态(V(B1))的所述至少一个电池模块(B2)的电流路径切换成导通的。


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    Title :

    Equalization of state of charge of battery modules of electric vehicle


    Additional title:

    电动车的电池模块的荷电状态的均衡


    Contributors:
    HOORMANN DIRK (author) / VOGLER TOBIAS (author) / GRONER HANS (author)

    Publication date :

    2024-07-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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