The invention provides a battery top cover, a forming method of the battery top cover, a power battery and an electric automobile, the battery top cover comprises a cover plate and a liquid injectionhole penetrating through the cover plate, the cover plate comprises a first cover body, and the first cover body comprises a first surface and a second surface which are oppositely arranged; and the first surface is sunken along one side close to the second surface to form a material supplementing groove surrounding the liquid injection hole. The first surface of the first cover body sinks along the side close to the second surface to form the material supplementing groove surrounding the liquid injection hole, so that the phenomena of edge collapse, corner collapse and the like in the liquidinjection hole processing process are avoided, the subsequent sealing operation of the sealing assembly and the battery top cover is facilitated, and further the occurrence probability of defective products of the power battery after liquid injection is reduced, the production cost is greatly saved, and the sealing performance of the liquid injection hole is improved.
本申请提供了一种电池顶盖、电池顶盖的成型方法、动力电池及电动汽车,所述电池顶盖包括盖板以及贯通所述盖板的注液孔,所述盖板包括第一盖体,所述第一盖体包括相对设置的第一表面和第二表面;其中,所述第一表面沿靠近所述第二表面的一侧凹陷,形成环绕所述注液孔的补料凹槽。本申请通过设置第一盖体的第一表面沿靠近第二表面的一侧凹陷,形成环绕注液孔的补料凹槽,实现避免在注液孔加工过程中出现的塌边、塌角等现象,便于后续密封组件与电池顶盖的密封操作,进而降低注液后动力电池不良品的出现几率,大大节约了生产成本,提高注液孔的密封性能。
Battery top cover, forming method of battery top cover, power battery and electric vehicle
电池顶盖、电池顶盖的成型方法、动力电池及电动汽车
2021-03-12
Patent
Electronic Resource
Chinese
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 |
European Patent Office | 2020
|European Patent Office | 2022
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