二次电池制造技术

一种二次电池，包括：电极组件(31)、第一端子(11)、第二端子(21)以及顶盖片(41)，所述电极组件(31)包括第一极片、第二极片以及设置在所述第一极片与所述第二极片之间的隔板，所述第一端子(11)与所述第一极片电连接，所述第二端子(21)与所述第二极片电连接，所述第一端子(11)和第二端子(21)中的至少一者与所述顶盖片(41)绝缘设置；所述二次电池还包括：附接于所述第一端子(11)上的接触片(12)，和电连接到所述第二端子(21)的导电片(22)，当所述二次电池的内部压力超过基准压力时，所述接触片(12)在内部压力的作用下动作并与所述导电片(22)接触，以形成通过所述第一极片、所述第一端子(11)、所述接触片(12)、所述导电片(22)、所述第二端子(21)以及所述第二极片的电连接路径。该方案提高了二次电池的安全性。

Two battery

A secondary battery includes: an electrode assembly (31), a first terminal (11), a second terminal (21) and a top cover (41). The electrode assembly (31) comprises a first polar plate, a second polar plate and a separator set between the first polar plate and the second polar plate, an electric connection between the first terminal (11) and the first polar plate, and an electrical connection between the second polar plate and the second polar plate. At least one of the first terminal (11) and the second terminal (21) is insulated with the top cover (41); the secondary battery also includes a contact sheet (12) attached to the first terminal (11) and a conductive sheet (22) electrically connected to the second terminal (21), which acts under the action of internal pressure when the internal pressure of the secondary battery exceeds the reference pressure. The conductive sheet (22) contacts to form an electrical connection path through the first polar sheet, the first terminal (11), the contact sheet (12), the conductive sheet (22), the second terminal (21) and the second polar sheet. The scheme improves the safety of secondary batteries.

【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。

【技术保护点】
PCT国内申请，权利要求书已公开。

【技术特征摘要】
【国外来华专利技术】PCT国内申请，...

【专利技术属性】
技术研发人员：蔡如来，杨伟，王鹏，李想，
申请(专利权)人：宁德时代新能源科技股份有限公司，
类型：发明
国别省市：福建,35