Electrode core assembly and battery containing same

Abstract

The invention provides an electrode core assembly comprising at least one electrode core, one space ring and one baffle, wherein the electrode core comprises an upper end surface, a lower end surface, two small side surfaces and two big flat side surfaces; the space ring is positioned at the end face of the electrode core, the baffle is positioned at the small side surface of the electrode core, and the space ring and the baffle are fixedly connected. The electrode core assembly can enable the electrode core to be positioned and fixed well so as to prevent the electrode core from shifting in the battery, especially prevent the relative displacement among the small electrode cores in a power battery pack, and reduces circumstances of current collector breakage, septum wrinkle, pole piece fall and the like, and thereby, the service life of the battery is prolonged, and the safety performance of the battery is improved. Moreover, a plurality of electrode cores of the power battery pack are easy to position, combine and assemble, thereby improving the production efficiency. Meanwhile, the invention reduces the mutual friction between the shell of the battery and the electrode core of the arc-shaped side surface, thereby reducing the damage on the electrode core, prolonging the service life of the battery and improving the battery performance.

Description

technical field [0001] The invention relates to an electrode core assembly and a battery containing the electrode core assembly. Background technique [0002] As a high specific energy chemical power source, batteries have been widely used in mobile communications, notebook computers, video cameras, cameras, portable instruments and other fields. People have higher and higher requirements on the performance of secondary batteries. [0003] The electrode core in the single battery and the electrode core group formed by stacking multiple small electrode cores in the battery pack are easy to move in the battery case under normal vibration and bumping conditions, and multiple small electrode cores at the same time It is also prone to relative displacement between them, which will cause great damage to the electrode core, that is, it is easy to cause damage to the current collector, wrinkle of the diaphragm, and electrode drop, which will reduce battery performance and bring saf...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages that the electrode core of the existing battery is prone to displacement, difficult to locate, cause damage to the electrode core, and reduce battery performance, and provide an electrode core assembly that can position and fix the electrode core to prevent the electrode core from moving and being damaged

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