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Battery

A battery and electrode technology, applied in secondary batteries, battery pack components, circuits, etc., can solve the problems of large space occupied by the tabs, low battery energy density, unreasonable internal structure settings of the battery, etc. Effect

Pending Publication Date: 2021-08-20
ZHUHAI COSMX BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the internal structure of the existing battery is unreasonable, the tabs take up a lot of space, and the energy density of the battery is low

Method used

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Embodiment Construction

[0033] Batteries in electronic devices such as electronic watches, electronic scales, and smart wearable devices, such as polymer lithium-ion batteries, are packaged with aluminum-plastic films, or batteries are packaged in steel shells.

[0034] In the prior art, whether it is a battery packaged in aluminum-plastic film or a battery packaged in a steel case, since the positive tab in the core in the battery needs to be connected to the casing of the battery, the positive tab is usually folded to the outer surface of the core , and welded on the inner wall of the case, the positive tab needs to occupy a certain thickness of the battery space, therefore, the outer surface of the winding core cannot fit tightly with the battery case, which will lose the energy density of the battery.

[0035] In addition, due to the low strength of the aluminum-plastic film, it is prone to damage and leakage, which poses a safety hazard; while the steel case needs to be stamped and formed, which ...

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Abstract

The invention provides a battery. The battery provided by the invention comprises a shell and a roll core located in the shell, the roll core comprises multiple layers of pole pieces arranged in a winding manner, a first tab is connected in the roll core, the first tab comprises a connecting part, and the connecting part is connected with the inner wall of the shell; the pole piece located on the outermost layer of the roll core is provided with an avoiding notch, and the connecting part is located in the avoiding notch. The internal structure of the battery provided by the invention is reasonable in arrangement, the first tab does not occupy the thickness space of the battery, and the energy density of the battery is improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery. Background technique [0002] Electronic devices such as electronic watches, electronic scales, and smart wearable devices are usually equipped with batteries. For example, electronic devices are equipped with lithium-ion batteries, which provide electrical energy to electronic devices through battery discharge. [0003] Taking the lithium-ion battery in an electronic watch as an example, the battery includes a shell and a cell inside the shell, the shell includes a negative shell and a positive flange, and the negative shell and the positive flange are insulated and connected; the battery is composed of a positive The pole piece, the negative pole piece and the diaphragm are wound together, and the diaphragm is sandwiched between the positive pole piece and the negative pole piece. Wherein, the positive tab on the positive pole piece is welded to the positive flang...

Claims

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Application Information

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IPC IPC(8): H01M50/102H01M50/188H01M50/531H01M10/0587
CPCH01M10/0587Y02P70/50Y02E60/10
Inventor 卫志达王智峰彭宁谢斌徐延铭
Owner ZHUHAI COSMX BATTERY CO LTD
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