The invention provides a secondary battery, a battery module, and a device using the secondary battery as a power supply. The secondary battery includes a case, an electrode assembly, a top cover assembly and a current collecting assembly; the electrode assembly is arranged in the case and comprises a main body part and a tab; the top cover assembly comprises a top cover plate connected to the shell and an electrode terminal arranged on the top cover plate; the current collecting assembly comprises an adapter sheet and a connecting piece; the connecting piece and the adapter sheet are separately provided and connected with each other; the adapter sheet is connected with the electrode terminal; the adapter sheet comprises a guide section; the guide section is located on one side of the mainbody part in the length direction of the secondary battery and extends in a direction perpendicular to the length direction; the connecting piece comprises a current collecting section connected withthe guide section and a tab connecting section connected with the tab; the current collecting section is arranged between the guide section and the main body part; the rigidity of the connecting piece is smaller than that of the guide section, so that when the portion, connected with the tab, of the connecting piece is bent relative to the length direction, the deformation of the guide section towards the main body part can be reduced, and the possibility that the guide section extrudes a pole piece to cause the demolding or powder detachment of the pole piece is reduced.

    本发明提供一种二次电池、电池模块以及使用二次电池作为电源的装置。二次电池包括:壳体;电极组件,设于壳体内,其包括主体部和极耳;顶盖组件,包括连接于壳体的顶盖板和设于顶盖板的电极端子;集流构件,包括转接片和连接件,连接件与转接片分开提供并相互连接,转接片与电极端子连接,转接片包括导引段,导引段位于主体部沿二次电池的长度方向一侧且沿垂直长度方向的方向延伸;连接件包括用于连接导引段的集流段和用于连接极耳的极耳连接段,集流段设于导引段和主体部之间,连接件的刚度小于导引段的刚度,以使连接件与极耳连接的部分相对于长度方向折弯时,能减小导引段朝主体部的变形,降低导引段挤压极片而导致极片脱膜或掉粉的可能性。


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    Titel :

    secondary battery, battery module, and device using secondary battery as power supply


    Weitere Titelangaben:

    二次电池、电池模块以及使用二次电池作为电源的装置


    Beteiligte:
    XU HU (Autor:in)

    Erscheinungsdatum :

    2020-04-21


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen




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