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A crimping type power battery assembly structure, assembly method and electric vehicle

A power battery and assembly structure technology, which is applied in the field of electric vehicles, can solve the problems of low connection reliability, unsuitability for automated production, and low assembly efficiency, and achieve high assembly efficiency, facilitate automated production, and improve production efficiency.

Active Publication Date: 2017-09-29
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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  • A crimping type power battery assembly structure, assembly method and electric vehicle
  • A crimping type power battery assembly structure, assembly method and electric vehicle
  • A crimping type power battery assembly structure, assembly 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 crimping type power battery assembly structure, an assembly method and an electric vehicle. The crimping type power battery assembly structure includes an upper battery compartment, a soft-packed battery cell and a protective cover arranged in the battery compartment. The battery compartment There are two lug fixing copper plates on the opening side of the opening, and the two lug fixing copper plates respectively cover the positive lug and the negative lug of the soft-packed battery core. The tabs of the soft-packed battery core are respectively pierced through the tabs and then bent to form a crimping part that is attached to the upper surface of the tab fixing copper plate. The tab fixing copper plate is provided with a pressing copper plate that presses the crimping part. The tight copper plate is connected to the tab fixed copper plate through threaded fasteners, and the pressed copper plate is also provided with a wiring member, and the protective cover covers the pressed copper plate. The invention can avoid the damage and pollution to the pouch cell and the environment caused by the soldering process, is suitable for automatic production, and can ensure reliable connection.

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 Patents(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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