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Power cell and battery pack

A technology of power batteries and batteries, which is applied in the direction of battery pack components, secondary battery manufacturing, circuits, etc., can solve problems such as instability of power batteries, and achieve the effect of solving instability and preventing shaking

Pending Publication Date: 2022-03-04
SUNWODA ELECTRIC VEHICLE BATTERY CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a power cell and a battery pack to solve the problem of unstable power cells in the prior art

Method used

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  • Power cell and battery pack
  • Power cell and battery pack
  • Power cell and battery pack

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Embodiment Construction

[0037] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0038] In order to solve the problem of unstable power cells in the prior art, the present invention provides a power cell and a battery pack.

[0039] Please refer to Figure 1 to Figure 7 , a power cell includes a cell body 10, a casing assembly 20 and an elastic assembly, the cell body 10 is arranged in the casing assembly 20, wherein there is an expansion gap between the cell body 10 and the casing assembly 20; the elasticity The assembly is arranged between the cell body 10 and the casing assembly 20 .

[0040] In order to facilitate the installation of the battery cell body 10 in the power cell of the present invention, the space in the casing assembly 20 is larger than the volume of th...

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Abstract

The invention provides a power battery cell and a battery pack, the power battery cell comprises a battery cell body and a shell assembly, the battery cell body is arranged in the shell assembly, and an expansion gap is formed between the battery cell body and the shell assembly; and the elastic assembly is arranged in the expansion gap. The power cell solves the problem that a power cell in the prior art is unstable.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a power battery cell and a battery pack. Background technique [0002] The current power cell is a closed space formed by the shell, the top cover and the supporting seals. The closed space is equipped with components such as winding cores, electrolytes, active materials, insulating films, and various electro-chemical energy conversions. substance. The winding core will continue to expand during charging and later charge-discharge cycles, and the inside of the battery core will slowly generate gas. The above two reasons will lead to macroscopic failure of the battery core, that is, the design of the battery core is also to pass the internal expansion through The aluminum shell is released outwards by swelling. This design requires room for cell expansion during module design. The current method is to add a return-shaped frame between the two cells. The frame is prone to prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/242H01M50/244H01M50/202H01M50/264H01M50/258H01M10/04
CPCH01M50/242H01M50/244H01M50/202H01M50/264H01M50/258H01M10/0431Y02E60/10Y02P70/50
Inventor 杨伟胡明江张耀陈辉
Owner SUNWODA ELECTRIC VEHICLE BATTERY CO LTD
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