A lithium ion cell encapsulated in a hard case with a management circuit module built in the negative electrode

Abstract

A lithium ion cell encapsulated in a hard case with a management circuit module built in the negative electrode, a negative electrode cap module and a positive electrode metal cylinder are assembled to form a sealed space, a lithium ion cell positive electrode film isolation film negative electrode film assembly is arranged in the sealed space, a lithium ion cell positive electrode film isolationfilm negative electrode film assembly positive electrode and the positive electrode metal cylinder are electrically connected, an electrolyte is injected into the sealed space, the outer part of the cylinder is insulated by a heat shrinkable film, in the negative cap module, a management circuit module is provided, the management circuit module is electrically connected with the negative electrodeof the negative electrode cap steel shell, the management circuit module is respectively electrically connected with the positive electrode and the negative electrode of the lithium ion cell positiveelectrode film isolation film negative electrode film assembly, and the management circuit module is composed of a lithium ion cell char voltage current management and protection circuit, a lithium ion cell discharging voltage current management and protection circuit, and a charging and discharging intelligent identification control circuit.

Description

Technical field [0001] The invention relates to a lithium ion electric core, in particular to a hard shell packaged lithium ion electric core. Lithium-ion batteries are the core energy storage components of various lithium-ion batteries. They are widely used in the energy supply of various mobile devices, such as laptop batteries, mobile phone batteries, Bluetooth device batteries, power tool batteries, and toy batteries. They have a broad market application space. Background technique [0002] At present, lithium-ion batteries are widely used in the market, and are commonly found inside lithium batteries of various mobile devices. Common lithium-ion batteries can be divided into two types in terms of packaging characteristics: one is hard-shell packaged lithium-ion batteries, and the other is soft-packed polymer lithium-ion batteries. Inside the lithium-ion battery cell, there is a positive electrode membrane with a current collector, an isolation diaphragm and a negative...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the fact that the existing lithium-ion batteries cannot directly enter the market application field, and at the same time solve the problems of high structural space loss rate and high production cost of other technical solutions, it is convenient for consumers to choose, combine and replace freely in use, and directly let lithium Ion cells enter the consumer market

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