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Heat conduction plate and its preparation method and battery pack device

A heat conduction plate and heat conduction layer technology, applied in the direction of secondary batteries, circuits, electrical components, etc., can solve problems such as low structural strength, increase process difficulty, and reduce product qualification rate, so as to improve structural strength, ensure heat conduction effect, improve The effect of thermal conductivity

Active Publication Date: 2019-12-17
SHANGHAI BYD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of this kind of hard heat conduction plate, due to its high hardness, it is often not closely attached to the single battery, and its heat conduction effect is not ideal. It is more difficult to fit the body battery tightly, and it is difficult to meet the heat dissipation requirements of the battery
Although this kind of flexible heat conduction plate can be closely attached to the single battery, due to its low structural strength, it often increases the difficulty of the process and reduces the product qualification rate during the process of battery assembly.

Method used

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  • Heat conduction plate and its preparation method and battery pack device
  • Heat conduction plate and its preparation method and battery pack device

Examples

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Effect test

preparation example Construction

[0038] In a relatively specific embodiment, the preparation method includes the following steps: separately configuring the first resin composition and the second resin composition; respectively putting the first resin composition and the second resin composition into the co-extrusion equipment In different feed chambers, a heat conduction plate comprising a hard heat conduction layer 10 and flexible heat conduction layers 20 located on both sides of the hard heat conduction layer 10 is formed by co-extrusion.

[0039] The preparation method of the heat conduction plate provided by the present invention has simple flow, easy operation and is suitable for large-scale production. Moreover, the heat conduction plate formed by this preparation method also includes a hard heat conduction layer in the middle and flexible heat conduction layers on both sides, and the hard heat conduction layer is used to support the entire heat conduction plate to improve the structural strength of th...

Embodiment 1

[0044] The first resin composition comprises: 100 parts of polyphenylene ether (commercially purchased from the product of Japan Asahi Kasei Co., Ltd. model S201A); Al 2 o 3 (particle size is 40μm) 50 parts; antioxidant 168 (commercially purchased from Shanghai Jinhai Yabao Fine Chemical Co., Ltd.) 3 parts, TAF (commercially purchased from Suzhou Xingtai Photochemical Auxiliary Co., Ltd.) 1 part; silane coupling agent (commercially purchased from Shin-Etsu Corporation, Japan, the brand is KBM-903 product) 1 part; maleic anhydride grafted compatibilizer (commercially purchased from Nanjing Plastic Tai Polymer Technology Co., Ltd., the brand is the product of ST-1) 1 part .

[0045] The second resin composition: with reference to the first resin composition, the difference is that, based on 100 parts of polyphenylene ether, the second resin composition also includes 10 parts of phthalates (commercially purchased from Shanghai Liancheng Petrochemical Co., Ltd. ).

[0046] Prep...

Embodiment 2

[0048] The first resin composition includes: 100 parts of silica gel (commercially purchased from Dongjue Fine Chemical Co., Ltd. with the brand name of 110-2, and its molecular weight is 500,000 to 700,000); 80 parts of SiC (with a particle size of 2.5 μm); Antioxidant 1010 (commercially purchased from Shanghai Jinhai Yabao Fine Chemical Co., Ltd.) 1 part, antioxidant 1089 (commercially purchased from Nanjing Milan Chemical Co., Ltd.) 2 parts, TAF (commercially purchased from Dongguan Baosheng Plastic Chemical Co., Ltd.) 1 part 3 parts; 3 parts of titanate coupling agent (commercially purchased from Tianyang Chemical Factory, Yizheng City, Jiangsu Province, with the trade mark TM-38S); styrene-grafted maleic anhydride (commercially purchased from Shenyang Siwei Company, trade mark SWR-3F product) 5 servings.

[0049] The second resin composition: with reference to the first resin composition, the difference is that based on 100 parts of polyphenylene ether, the second resin c...

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Abstract

The invention discloses a thermal conductive plate and a preparation method thereof and a battery pack device. The thermal conductive plate comprises a hard thermal conductive layer and flexible heat conductive layers located at the two sides of the hard thermal conductive layer, and the hardness of the hard thermal conductive layer is larger than that of the flexible thermal conductive layers. The thermal conductive plate comprises the hard thermal conductive layer and the flexible heat conductive layers located at the two sides at the same time, the hard thermal conductive layer is utilized for achieving a supporting function on the whole thermal conductive plate, and the structural strength of the thermal conductive plate is improved. The flexible thermal conductive layers arranged at the two sides are utilized for guaranteeing that the thermal conductive plate can be closely attached to the outer side of a battery in the use process, the thermal conductive plate can be still effectively attached to the battery especially under the special condition that a battery bubbles, and then the thermal conductive effect of the thermal conductive plate is guaranteed.

Description

technical field [0001] The invention relates to the field of battery preparation, in particular to a heat conducting plate, a preparation method thereof, and a battery pack device. Background technique [0002] Battery (Battery) refers to a cup, tank or other container or part of a composite container that contains an electrolyte solution and a metal electrode to generate current, and is a device that converts chemical energy into electrical energy. It has a positive pole and a negative pole. As technology advances, batteries generally refer to small devices that can generate electricity. Such as solar cells. The performance parameters of the battery mainly include electromotive force, capacity, specific energy and resistance. Using the battery as the energy source can obtain stable voltage, stable current, stable power supply for a long time, and a current that is little affected by the outside world, and the battery structure is simple, easy to carry, easy to charge and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/613H01M10/623H01M10/6555C08L71/12C08L83/04C08K3/22C08K5/12C08K3/34C08K5/523
CPCC08L71/12C08L83/04C08L51/00C08K13/02C08K2003/2227C08K5/12C08K3/34C08K5/523
Inventor 朱建华朱燕
Owner SHANGHAI BYD
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