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A cooling device for a lithium-ion battery pack

A lithium-ion battery pack and cooling device technology, which is applied to battery pack components, secondary batteries, circuits, etc., can solve problems such as lithium battery burnout, explosion, and inability to terminate chain reactions, and achieve the effect of strong work stability

Active Publication Date: 2022-06-21
安徽潜川动力锂电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the above measures can interrupt the source of battery overheating, since the lithium battery has already overheated, a chain reaction is likely to occur inside itself, even if the source is cut off, the subsequent chain reaction may not be terminated, causing the lithium battery to burn or explode.

Method used

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  • A cooling device for a lithium-ion battery pack
  • A cooling device for a lithium-ion battery pack
  • A cooling device for a lithium-ion battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like Figure 1-3 As shown, a heat dissipation device for a lithium-ion battery pack includes a battery unit 1, a battery pack frame 2 and a separation unit 3. The battery unit 1 is arranged in the battery pack frame 2, and a separation unit is provided between adjacent battery units 1. Unit 3, the battery unit 1 is movably connected to the battery pack frame 2, and the separation unit 3 can push the movement of the battery pack frame 2 to separate the battery unit 1 with abnormal temperature;

[0036] The battery pack frame 2 includes a base 21, a fixed plate 22, a moving plate 23 and an interlocking mechanism 24. The top of the base 21 is provided with several moving plates 23 and a fixed plate 22. The fixed plate 22 is fixedly connected to one end of the base 21. The moving plate 23 is slidably connected with the base 21, and the moving plate 23 and the fixed plate 22 are connected with an interlocking mechanism 24. The interlocking mechanism 24 includes several inter...

Embodiment 2

[0045] On the basis of the first embodiment, the bimetal 31 is preferably a fast jumping type. The bimetal 31 of this form is characterized by a relatively fast response and can complete the deformation and separation in a relatively short period of time. However, due to the deformation and force application time It is short, so it is only suitable for the case where the battery unit 1 and the overall size of the battery pack are small, which means that the deformation elastic force is small, so as to avoid a large impact on the battery unit 1 .

Embodiment 3

[0047] like Figure 4 As shown, a heat dissipation device for a lithium-ion battery pack includes a battery unit 1, a battery pack frame 2 and a separation unit 3. The battery unit 1 is arranged in the battery pack frame 2, and a separation unit is provided between adjacent battery units 1. Unit 3, the battery unit 1 is movably connected to the battery pack frame 2, and the separation unit 3 can push the movement of the battery pack frame 2 to separate the battery unit 1 with abnormal temperature;

[0048] The battery pack frame 2 includes a base 21, an upper cover 25, a chilling mechanism, a fixed plate 22, a moving plate 23 and an interlocking mechanism 24. The top of the base 21 is provided with several moving plates 23 and a fixed plate 22, and the fixed plate 22 is fixed One end of the base 21 is connected, the top of the fixed plate 22 and the movable plate 23 is provided with an upper cover 25 , the movable plate 23 is slidably connected with the base 21 , the upper cov...

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PUM

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Abstract

The invention relates to a cooling device for a lithium-ion battery pack. The cooling device for a lithium-ion battery pack includes a battery unit, a battery pack frame and a separation unit. There is a separation unit, the battery unit is movably connected to the battery pack frame, and the separation unit can push the movement of the battery pack frame to separate the battery unit with abnormal temperature; the invention separates the overheated battery unit from other battery units through the mechanical separation unit , to prevent the heat generation of the overheated battery unit from negatively affecting adjacent battery units; the invention uses a chilling mechanism to chill the overheated battery unit, rapidly cool it down, and block the chain reaction caused by heat.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries, and in particular relates to a heat dissipation device for a lithium ion battery pack. Background technique [0002] A lithium-ion battery is a secondary battery (rechargeable battery) that mainly relies on the movement of lithium ions between the positive and negative electrodes to work. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: during charging, Li+ is deintercalated from the positive electrode, intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; during discharge, the opposite is true. [0003] The positive electrode materials of lithium batteries are lithium cobalt oxide LiCoO2, ternary material Ni+Mn+Co, lithium manganate LiMn2O4 plus conductive agent and adhesive, which are coated on aluminum foil to form the positive electrode, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/256H01M50/244H01M50/204H01M10/613H01M10/637H01M10/6567H01M50/20
CPCH01M10/613H01M10/637H01M10/6567H01M50/20H01M50/256Y02E60/10
Inventor 傅钊
Owner 安徽潜川动力锂电科技有限公司