Battery module foam type selection method and battery module

A battery module and foam technology, which is applied to battery pack parts, secondary batteries, circuits, etc., can solve the problems of battery pre-tightening force, cell expansion space, etc., to ensure reliable structure and reduce foam selection process , to ensure the effect of the module structure

Active Publication Date: 2020-05-08
SUZHOU QINGTAO NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The battery module foam selection method provided by the present invention can solve the problems of battery pre-tightening force and cell expansion space in the module, improve the design efficiency of the module and product reliability, and ensure the structural reliability of the module in the whole life cycle

Method used

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  • Battery module foam type selection method and battery module
  • Battery module foam type selection method and battery module
  • Battery module foam type selection method and battery module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The present embodiment carries out foam selection according to the following method:

[0066] This embodiment uses VDA355 module, module size: 355×151×108.5mm, battery size: 310×102×11mm; module width: 151mm, thickness of all batteries: 11×12=132mm, other zeros The sum of the thickness of the parts (insulation board and glue): 9mm.

[0067] (1) use figure 1 and figure 2 The battery cell detection device shown tests the cell preload F and the cell expansion space φ. The best pre-tightening force F of the measured cell is 30KPa and the expansion space of the cell is 5% for φ.

[0068] The battery cell detection device includes a screw 1, a pressure plate 3, an elastic component 4, an upper splint 6, a lower splint 7, and a pressure sensor 11 from top to bottom, and a displacement sensor 5 is provided on the edge of the upper splint 6; The bottom of the screw 1 is in contact with the pressure plate 3, and is arranged in the middle of the pressure plate 3. There are at...

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Abstract

The invention provides a battery module foam selection method and a battery module. The battery module comprises a battery cell and foam, wherein the foam, the battery cell and the module meet the following dimensional relationship: y*(1-x%) = A; y*(z%-x%)=phi, wherein A is the size of the foam after pre-tightening, y is the thickness size of the foam, x% is the pre-tightening compression amount of the foam, z% is the total compression amount of the foam, and phi is the expansion space of the battery cell. According to the size relationship limited by the equation, technicians can efficientlydesign the sizes of the module, the battery cell and the foam, so the design process of the battery module is optimized, and the design efficiency of the module and the reliability of a product are improved.

Description

technical field [0001] The invention belongs to the technical field of new energy, and relates to a battery module foam selection method and a battery module. Background technique [0002] As a type of power battery, pouch batteries are widely used in electric vehicles after they are integrated into battery systems in the form of battery modules; during actual use, the performance of pouch batteries will continue to decay and be accompanied by volume expansion. [0003] The research shows that the pouch battery needs to be applied with a certain pre-tightening force, and at the same time, it is necessary to reserve a certain space for cell expansion (a certain pre-tightening force is applied to the pouch battery at the beginning of the service life, and the performance of the battery during the service life (capacity) , power) decay slowly, and the expansion will slow down during the service life); in order to better play the performance of the battery cell, the industry's u...

Claims

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Application Information

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IPC IPC(8): H01M2/10H01M10/653H01M10/6554H01M10/658G01D21/02
CPCG01D21/02H01M10/653H01M10/6554H01M10/658H01M50/20Y02E60/10
Inventor 李峥冯玉川何泓材陈凯杨帆南策文
Owner SUZHOU QINGTAO NEW ENERGY TECH CO LTD
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