Power battery heating module and preparation method thereof

A power battery and heating die technology, applied in ohmic resistance heating, electric heating devices, secondary batteries, etc., can solve the problems of large pollution, poor heating uniformity, and poor far-infrared efficiency in the manufacturing process, and achieve large-scale benefits. The effect of production, low cost and environmentally friendly production process

Pending Publication Date: 2020-08-11
安徽宇航派蒙健康科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alloy heating film and module mainly have the following problems: First, the alloy heating material has poor far-infrared efficiency, and its temperature transfer path is basically based on heat conduction, that is, it is directly transferred from the surface of the heating element to the surface of the battery shell, and the heating efficiency is poor. ;Secondly, the alloy heating element has poor heating uniformity; finally, the manufacturing process of the alloy heating element has relatively large pollution, which is more harmful to the environment

Method used

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  • Power battery heating module and preparation method thereof
  • Power battery heating module and preparation method thereof
  • Power battery heating module and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like Figure 1-3 A single-zone power battery heating module shown includes:

[0051] A conductive heating structure, the conductive heating structure includes a graphene heating body 2, two copper electrodes 3 and two silver electrodes 5, the graphene heating body includes a patterned graphite with two ends 21,22 An alkene heat-conducting film 2, each end 21, 22 is respectively connected to one end of a silver electrode 5, and the other end of the silver electrode 5 is connected to a copper electrode 3;

[0052] An upper insulating film 401 and a lower insulating film 402, the electric heating structure is encapsulated by the upper and lower insulating films 401, 402, and the inner surfaces of the upper and lower insulating films are respectively provided with upper and lower adhesive layers 901, 902 for for bonding the electric heating structural member; and

[0053] The electrode terminal 30 is used to connect the lead wires. The upper insulating film 401 and the gl...

Embodiment 2

[0058] see Figure 4 As shown, the preparation method of the power battery heating module in Example 1 is shown, including:

[0059] 1) Pattern the graphene thermally conductive film 2 by die-cutting to form a U-shaped heating element (single partition), and the heating element is attached to the PET release film 1 (see image 3 ), the heating element resistance is 42ohm;

[0060] 2) On the surface of polyimide (PI) 402, a glue-coated insulating substrate, a patterned copper electrode 3 is formed by wet etching (see Figure 4 in A);

[0061] 3) The U-shaped heating element 2 formed in step 1) is pressed together with the glue-coated PI402 containing the patterned copper electrode formed in step 2). 20) Adjacent, remove the PET release film after the pressing is completed, the pressing conditions are: pressing temperature 180°C, pressing time 80s, pressure 100kg / cm 2 ,(See Figure 4 B in

[0062] 4) Between the copper electrode and the patterned graphene lead connector, p...

Embodiment 3

[0068] This example shows another preparation method of the power battery heating module in Example 1, see Figure 4 As shown, it is basically the same as Example 2, only having some differences in process parameters. Specifically:

[0069] 1) Adopt die-cutting method, graphene heat conduction film 2 is patterned, form U-shaped heating element 2 (single division), heating element is attached on the PET release film 1 (see image 3 ), the heating element resistance is 42ohm;

[0070] 2) On the surface of the polyimide (PI cover film) 402 surface of the glue-coated insulating substrate, adopt the rapid pressing process, and press the copper electrode strip 3 at the corresponding position (see Figure 4 In A), the copper electrode pressing conditions are: pressing temperature 160°C, pressing time 40s, pressure 120kg / cm 2 ;

[0071] 3) Press the U-shaped heating element 2 formed in step 1) and the glue-coated PI 402 formed in step 2) containing the copper electrode 3, and the...

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Abstract

The invention provides a power battery heating module. The power battery heating module comprises a conductive heating structural member, the conductive heating structural member comprises a grapheneheating body, two copper electrodes and two silver electrodes, wherein the graphene heating body comprises a patterned graphene heat conduction film with two ends, each end is connected with one end of one silver electrode, and the other end of the silver electrode is connected with one copper electrode; an upper insulating film and a lower insulating layer, wherein the electric heating structuralcomponent is packaged in the upper insulating film and the lower insulating film, and the inner surfaces of the upper insulating film and the lower insulating film are respectively provided with an upper adhesive layer and a lower adhesive layer which are used for bonding the electric heating structural component; and electrode terminals used for connecting a lead, wherein the upper insulating film and the upper adhesive layer are provided with two terminal holes, and the two copper electrodes are exposed through the two terminal holes to form two electrode terminals.

Description

technical field [0001] The invention relates to a heating function structural part of a power battery. Background technique [0002] In recent years, with the enhancement of global human awareness of environmental protection, the new energy automobile industry has accelerated its development. In new energy vehicles, the mainstream technology is to use power lithium battery packs as the vehicle's power source. However, the power lithium battery pack has an Achilles' heel, it is difficult to start and use at low temperature, and the low temperature environment seriously affects the service life and battery life of the battery pack. Therefore, the power lithium battery pack must be effectively thermally managed, and it needs to be heated when used in a low temperature environment. [0003] Traditional heating products for power battery packs are alloy heating films and modules. The manufacturing method of this heating product usually adopts the method of wet etching alloy mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/00H01M10/615H01M10/625H01M10/6571
CPCH05B3/00H01M10/615H01M10/625H01M10/6571Y02E60/10
Inventor 谭化兵潘智军
Owner 安徽宇航派蒙健康科技股份有限公司
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