Lithium ion battery core with continuous lamination and lithium ion battery

Abstract

The invention relates to a lithium ion battery core with continuous lamination and a lithium ion battery, belonging to a storage battery and aiming at providing a lithium ion battery with sample structure and difficultly shed active substances, as well as low production cost. The lithium ion battery core with continuous lamination comprises a positive plate, a negative plate and a diaphragm, wherein the positive plate comprises a belted positive plate and a monolithic positive plate, the negative plate comprises a belted negative plate and a monolithic negative plate, the diaphragm comprises a positive side-belted diaphragm, a middle belted diaphragm and a negative side-belted diaphragm, the positive side-belted diaphragm, the belted positive plate, the middle belted diaphragm, the beltednegative plate and the negative side-belted diaphragm sequentially laminated and connected along a direction vertical to the surfaces thereof to form a main core body, the main core body is continuously bent into a Z shape along the length direction, the monolithic positive plate is inserted in adjacent bent parts of the positive side-belted diaphragm, the monolithic positive plate is inserted inthe adjacent bent parts of the negative side-belted diaphragm, and parts in which the positive plate and the negative plate are in contact with the diaphragm are coated with the active substances.

Description

technical field [0001] The present invention relates to a storage battery, in particular to a lithium ion battery cell with a continuous lamination structure and a lithium ion battery containing the same. Background technique [0002] A chemical battery is a device that directly converts chemical energy into electrical energy. The chemical battery mainly includes a casing as a sealing material, an electrolyte solution in the casing, positive and negative electrode sheets and tabs connecting the electrode sheets. Among them, the existing lithium-ion battery is a kind of chemical battery, which is widely used at present. Since Sony successfully achieved commercial production of lithium-ion rechargeable batteries in the 1990s, the market has mainly produced small-capacity lithium-ion rechargeable batteries with a capacity of less than 2.3 Ah. With the development of society, people have higher and higher requirements for mobile energy. For example, electric bicycles and electr...

AI Technical Summary

Problems solved by technology

However, in the production process of die-cut single-piece pole piece, it is easy to cause the active material on the surface of the pole piece to fall off, and there are more burrs on the edge of the pole piece, the production process is more cumbersome, and the efficiency is lower.

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