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Compression joint type power battery assembly structure, assembling method and electric vehicle

A power battery and assembly structure technology, applied in the field of electric vehicles, can solve the problems of being unsuitable for automated production, low connection reliability, and low assembly efficiency, and achieve the effects of facilitating automated production, high assembly efficiency, and improving production efficiency

Active Publication Date: 2016-01-13
ZHEJIANG CHAOWEI CHUANGYUAN INDUSTRAIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low assembly efficiency, unsuitability for automatic production and low connection reliability in the existing power battery assembly method, and provide a battery with high assembly efficiency, suitable for automatic production and reliable connection. Compression-type power battery assembly structure, assembly method, and electric vehicle using the power battery assembly structure

Method used

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  • Compression joint type power battery assembly structure, assembling method and electric vehicle
  • Compression joint type power battery assembly structure, assembling method and electric vehicle
  • Compression joint type power battery assembly structure, assembling method and electric vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1: as figure 1 , figure 2 As shown, a crimping type power battery assembly structure includes a cube-shaped battery compartment 1 with an upper opening, several soft-packed cells 2 arranged side by side in the battery compartment along the length direction of the battery compartment, and the soft-packed cells The tabs 21 are arranged on the upper side of the soft pack cell, and the tabs are composed of sheet-shaped positive tabs and negative tabs, and the positive and negative tabs of all the soft pack cells are arranged in the same direction, thus forming a Positive tabs formed from positive tabs and negative tabs formed from negative tabs. Such as image 3 As shown, the upper parts of the positive tab and the negative tab in the tab are bent to form a crimping portion 22, so that the positive tab and the negative tab are roughly L-shaped.

[0040] In addition, we need to arrange a shock-absorbing plate 4 made of foam on the upper side of the pouch cell ...

Embodiment 2

[0044] Embodiment 2: A crimping type power battery assembly method, comprising the following steps:

[0045] a. If figure 1 As shown, bend the sheet-shaped tabs on the flat soft-packed battery cell to 95-100 degrees to form a crimping part, and then figure 1 , figure 2As shown, put an even number of soft-packed cells one by one into the vertically spaced separation grooves in the rectangular battery compartment with the upper opening. The separation grooves are arranged along the length of the battery compartment. At this time, the crimping part is 5 The angle of -10 degrees is inclined upwards, the positive tabs of all the tabs of the soft-packed cells are arranged into a positive tab string, and the negative tabs of all the tabs of the soft-packed cells are arranged into a negative tab string, and the odd-numbered The pouch cell and the subsequent adjacent even-numbered pouch cells form a pouch cell pair, that is to say, the first and second pouch cells form a pouch cell ...

Embodiment 3

[0050] Embodiment 3: An electric vehicle includes a power battery. Specifically, the power battery is composed of several power battery modules connected in series, and the power battery module adopts the crimping type power battery assembly structure described in Embodiment 1.

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Abstract

The invention discloses a compression joint type power battery assembly structure, an assembling method and an electric vehicle. The compression joint type power battery assembly structure comprises an upper part battery compartment, flexibly packaged electric cores and a protection cover arranged in a battery compartment; two tab-fixing copper plates are arranged on the opening side of the battery compartment; a positive electrode tab and a negative electrode tab of each flexibly packaged electric core are covered by the two tab-fixing copper plates respectively; tab perforating holes are formed in the position, corresponding to the tabs, in the tab-fixing copper plates; the tabs of the flexibly packaged electric cores penetrate through the tab perforating holes to be bent to form pressing parts clung to the upper surfaces of the tab-fixing copper plates; compressing copper plates for propping and pressing the pressing parts are arranged on the tab-fixing copper plates; the compressing copper plates are connected with the tab-fixing copper plates through threaded fastening parts; the compressing copper plates are further provided with connection member parts; and the compressing copper plates are covered by the protection cover. The compression joint type power battery assembly structure can avoid damage of the flexibly packaged electric cores and the environment pollution caused in the tin soldering process; and in addition, the assembly structure is suitable for industrial production and capable of ensuring reliable connection as well.

Description

technical field [0001] The invention relates to the technical field of power batteries for vehicles, in particular to a battery assembly structure, an assembly method and an electric vehicle using the power battery assembly structure which are convenient for automatic production. Background technique [0002] Lithium-ion battery technology has become increasingly mature, and the soft-pack battery pack has many advantages such as lightness, thinness, long cycle life, good safety performance, high energy density, stable discharge platform, excellent power performance, environmental protection and no pollution. to develop rapidly. In the prior art, people usually use soldering process to assemble several single batteries in series and parallel to form a power battery module, and then connect several power battery modules in series to form a power battery for use. However, for soft-pack batteries, the high temperature during soldering has great damage to the soft-pack batteries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20H01M50/209H01M50/249H01M50/258H01M50/503H01M50/51H01M50/517
CPCH01M2220/20H01M50/502Y02E60/10
Inventor 潘健健孙延先任宁王玉龙聂春雷
Owner ZHEJIANG CHAOWEI CHUANGYUAN INDUSTRAIAL
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