Top panel of lithium battery with overcharging function

Abstract

The invention provides a top panel of a lithium battery with an overcharging function. The top panel comprises a base plate, a cathode upper plastic, an anode upper plastic, a cathode lower plastic, an anode lower plastic, a cathode seal ring, an anode seal ring, a cathode column plate and an anode column plate; a cathode column and an SSD base are arranged on the cathode column plate; a second cathode column hole and an SSD hole are formed in the cathode lower plastic; a second anode column hole is formed in the anode lower plastic; a porous plate, a first cathode column hole, an anti-explosive hole and a second cathode column hole are successively formed in the base plate from left to right; an SSD, the SSD hole, the SSD seal ring, the porous plate and an SSD paster are successively fixed on the SSD base from top to bottom; an anti-explosive piece is arranged in the bottom of the anti-explosive hole, and a protecting paster of the anti-explosive valve is arranged on the top. The top panel of the lithium battery provided by the invention is simple in structure, low in cost and convenient to use, and the manufacturing cost and the using cost are greatly lowered.

Description

technical field [0001] The invention belongs to the field of power batteries, in particular to a lithium battery top cover plate with an overcharge function. Background technique [0002] At present, with the increasing miniaturization, portability and portability of electronic products, such as cameras, notebooks and mobile phones, the driving power of these electronic products is also developing in the direction of high capacity, high safety and portability. Its excellent characteristics such as high capacity are widely used in electronic products. [0003] The lithium battery includes a shell, a cover plate, and a battery cell, etc., wherein the battery core is placed inside the shell, the upper end of the shell has an upper end opening, and the cover plate is closed on the upper end opening of the shell, and then formed on the cover plate If the pole is used, the lithium battery can be electrically connected with external electronic components to realize power supply. ...

AI Technical Summary

Problems solved by technology

[0004] When the lithium battery is in use, due to factors such as charger failure and overcharging, abnormal gas will be generated with the internal chemical reaction of the battery, resulting in excessive internal pressure of the battery, resulting in a battery explosion accident

However, the existing anti-explosion protection devices for batteries have disadvantages such as poor reliability, low pressure range, complex structure, and high processing requirements.

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