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Lithium ion battery roll core and battery

A lithium-ion battery, winding core technology, applied in secondary batteries, battery pack components, circuits, etc., can solve the problem that a specific winding structure cannot be realized, and achieves improvement of winding production efficiency, energy density, and automation. Effect

Pending Publication Date: 2022-04-12
安普瑞斯(无锡)有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to provide a winding core for a polymer lithium-ion battery in view of the vacancy of the existing technology. The specific winding structure cannot be realized and other problems

Method used

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  • Lithium ion battery roll core and battery
  • Lithium ion battery roll core and battery
  • Lithium ion battery roll core and battery

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Embodiment Construction

[0031] The above-mentioned content of the present invention will be described in further detail below by the form of the embodiment, but this should not be interpreted as the scope of the above-mentioned theme of the present invention being limited to the following embodiments, all technologies realized based on the above-mentioned content of the present invention belong to scope of the invention.

[0032] The invention provides a lithium-ion battery winding core and battery, wherein the winding core includes a positive electrode sheet, a negative electrode sheet, a tab and a casing, the winding core is prepared by a winding process, and the positive electrode and the negative electrode are both head-to-tail double-aligned structure, wherein the positive electrode and / or negative electrode of the first fold are coated on both sides, and a protective tape is pasted on the positive electrode sheet inside the middle of the core to prevent the lithium ions of the positive electrode...

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Abstract

The invention relates to a lithium ion battery roll core and a battery, the lithium ion battery roll core comprises a positive plate, a negative plate, a tab and a shell, the preparation of the roll core adopts a winding process, the positive electrode and the negative electrode both adopt an end-to-end double-aligned structure, the positive electrode and / or the negative electrode of the first fold are / is subjected to double-sided coating, and a protective adhesive tape is adhered to the positive plate on the inner side of the middle part of the roll core; lithium ions of the positive electrode are prevented from being separated; the positive plate and / or the negative plate adopts a continuous coating process, and empty foils are reserved at the tab positions of the positive plate and / or the negative plate. According to the invention, the number of winding layers of the winding core can be reduced, the thickness of the winding core is reduced, the energy density is improved, the production cost is reduced, and the winding production efficiency of the electrode plate is greatly improved. The lithium ion battery formed by the battery cell can be applied to the fields of mobile equipment, energy storage equipment, wearable equipment and the like.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a lithium ion battery winding core and a battery. Background technique [0002] Lithium ion has been widely used in portable electronic products due to its high energy density, high working voltage, long cycle life, environmental protection and safety. With the continuous development of the electronics industry, portable consumer electronics products have more and more functions, and are becoming more and more perfect and powerful, especially the emergence of smart phones, tablet computers, and wearable devices, which have powerful functions, various components, and relatively high demand for electricity. Large, frequent charging and discharging times, the energy density, cycle life, and safety performance requirements of randomly matched batteries are getting higher and higher. The present invention provides a winding structure of a lithium-ion winding core in vie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M10/0587H01M50/531
CPCY02E60/10Y02P70/50
Inventor 张小海徐子福严涛
Owner 安普瑞斯(无锡)有限公司
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