极片、电芯及储能装置制造方法及图纸

本发明专利技术提供了一种极片、电芯及储能装置。极片用于形成电芯，包括：集流体；膜片，设置在集流体的表面上；以及凹槽，底部为露出的集流体而周侧为膜片。其中，凹槽底部露出的集流体为空白集流体，空白集流体形成有连接部，连接部作为空白集流体的一部分从空白集流体上切出并沿宽度方向弯折在空白集流体上，且连接部的至少一部分在宽度方向超出集流体外边缘。一个极片的多个连接部固定在一起以形成电芯的极耳；或多个极片的连接部固定在一起以形成电芯的极耳。本发明专利技术的极片能够提高电芯的能量密度以及极耳与极片的空白集流体的连接强度，并降低生产成本。

Electrodes, Cores and Energy Storage Devices

The invention provides a polar plate, a core and an energy storage device. Electrodes are used to form cores, including: collecting fluid; diaphragms, set on the surface of collecting fluid; and grooves, the bottom of which is an exposed collecting fluid and the periphery of which is a diaphragm. The collector exposed at the bottom of the groove is a blank collector. The blank collector forms a connecting part, which cuts out from the blank collector as part of the blank collector and bends on the blank collector along the width direction, and at least part of the connecting part exceeds the outer edge of the collector in the width direction. A plurality of connection parts of a polar plate are fixed together to form the polar ear of the core; and the connection parts of the plurality of polar plates are fixed together to form the polar ear of the core. The electrode sheet of the invention can improve the energy density of the core and the connection strength between the electrode ear and the blank collector of the electrode sheet, and reduce the production cost.

【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：郭培培，赵义，何平，彭业军，程文强，
申请(专利权)人：宁德新能源科技有限公司，
类型：发明
国别省市：福建,35