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Shell structure of lithium ion battery and battery pack combined by battery shell

A technology for lithium-ion batteries and battery casings, applied to battery pack components, secondary batteries, structural parts, etc. Effects of swelling, prolonging service life, and improving safety performance

Active Publication Date: 2013-03-06
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention designs a lithium-ion battery shell structure and a battery pack composed of the same. The technical problems it solves are: (1) the electrolyte of the lithium-ion battery will react with the positive and negative electrodes, and a large amount of gas will be generated, which is easy to Cause expansion and deformation of the battery case; (2) The traditional closed lithium-ion battery case is easy to accumulate heat, and the battery will shorten the service life of the battery case if the battery is in a high temperature state for a long time

Method used

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  • Shell structure of lithium ion battery and battery pack combined by battery shell
  • Shell structure of lithium ion battery and battery pack combined by battery shell
  • Shell structure of lithium ion battery and battery pack combined by battery shell

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Embodiment Construction

[0022] Combine below Figure 1 to Figure 3 , the present invention is further described:

[0023] Such as figure 1 with figure 2 As shown, a lithium-ion battery housing structure includes a battery cell 2 and a housing 3. The battery cell 2 is placed in the housing 3, and a groove 1 is provided on the housing 3. The heat and air bubbles generated by the battery cell 2 It is directly transmitted to the outside of the housing 3 through the groove 1.

[0024] The number of grooves 1 is even and symmetrically distributed on both sides of the housing 3 . The cross-sectional shape of the groove 1 is a rectangle. The length of the rectangular groove is 30mm-50mm, the width is 10mm-15mm and the depth is 1mm.

[0025] Such as image 3 As shown, a battery pack composed of battery casings includes a battery casing structure and a plurality of battery cells 2. When multiple identical battery casing structures are connected as a whole, a plurality of battery cells 2 and a plurality ...

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Abstract

The invention relates to a shell structure of a lithium ion battery. The shell structure comprises a battery core (2) and a shell (3), wherein the battery core (2) is placed in the shell (3); grooves (1) are formed on the shell (3); and the heat and bubbles produced by the battery core (2) directly pass through the grooves (1) to be transmitted to the external of the shell (3). In the shell structure of the lithium ion battery and a battery pack combined by the battery shell, the shell is provided with the grooves which improve the deformation resistance and compression strength of the shell.

Description

technical field [0001] The invention relates to a lithium ion battery casing and a battery pack. Background technique [0002] Lithium-ion batteries have been successfully developed since 1990. Due to their unique advantages such as high specific energy, high working voltage, no pollution, and good safety performance, they have been widely used as power sources for household appliances such as portable computers, digital cameras, and mobile phones. , and has gradually replaced traditional batteries in the fields of aviation, aerospace, navigation and transportation and communication equipment. Due to the needs of energy depletion and environmental protection in recent years, the application in the direction of electric vehicles is an inevitable trend. [0003] In the actual battery production process, after the electrolyte is injected, the extra space inside the battery is very small. In the later formation test, the battery will generate heat when charging, and the heat wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02H01M10/50H01M10/613H01M10/6551
CPCY02E60/12Y02E60/10
Inventor 高锋柱丁晓雅
Owner 奇瑞新能源汽车股份有限公司