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Production method of power battery heat spreading protection device

A protective device and power battery technology, which is applied in the direction of secondary batteries, electrochemical generators, circuits, etc., can solve the problems of poor flatness and pressure resistance of heat-pressed sealing products, etc.

Pending Publication Date: 2021-09-07
昆山清安能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a production method of a heat spread protection device for a power battery, which solves the problems of key parameter regulation in the production process and poor product flatness and product pressure resistance in the heat-pressing sealing process

Method used

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  • Production method of power battery heat spreading protection device
  • Production method of power battery heat spreading protection device
  • Production method of power battery heat spreading protection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Example 1: Fabrication of thermal spread protection device for 150*100*26 power battery

[0079] For square-shell lithium-ion batteries with geometric dimensions of 150mm*100mm*26mm, thermal spread protection devices for power batteries can be made, but not limited to, according to the following methods:

[0080] (1) Cutting of base material and infrared shielding layer;

[0081] In this step, the length and width of the nanofiber material base and the infrared shielding layer are 130mm*80mm, and it is necessary to cut 3 pieces of the nano-ceramic fiber base material and 1 piece of the infrared shielding layer.

[0082] (2) Aluminum-plastic film cutting;

[0083] In this step, the length and width of the aluminum-plastic film are 150mm*100mm, and 2 pieces of aluminum-plastic film need to be cut.

[0084] (3) The flame retardant is coated on the surface of the aluminum-plastic film;

[0085] In this step, it is first necessary to configure a flame retardant for coatin...

Embodiment 2

[0100] Example 2: Fabrication of thermal spread protection device for 500*100*12 power battery

[0101] For the square soft-packed lithium-ion battery with a geometric size of 500mm*100mm*12mm, the power battery heat spread protection device can be made, but not limited to, according to the following methods:

[0102] (1) Cutting of base material and infrared shielding layer;

[0103] In this step, the length and width of the nanofiber material base and the infrared shielding layer are 480mm*80mm, and it is necessary to cut 3 pieces of the nano-ceramic fiber base material and 1 piece of the infrared shielding layer.

[0104] (2) Aluminum-plastic film cutting;

[0105] In this step, the length and width of the aluminum-plastic film are 500mm*80mm, and 2 pieces of aluminum-plastic film need to be cut.

[0106] (3) The flame retardant is coated on the surface of the aluminum-plastic film;

[0107] In this step, it is first necessary to configure a flame retardant for coating. ...

Embodiment 3

[0123] Example 3: Fabrication of thermal spread protection device for 150*100*26 power battery

[0124] For square-shell lithium-ion batteries with geometric dimensions of 150mm*100mm*26mm, thermal spread protection devices for power batteries can be made, but not limited to, according to the following methods:

[0125] (1) Cutting of base material and infrared shielding layer;

[0126] In this step, the length and width of the nanofiber material base and the infrared shielding layer are 130mm*80mm, and it is necessary to cut 4 pieces of the nano-ceramic fiber base material and 1 piece of the infrared shielding layer.

[0127] (2) Aluminum-plastic film cutting;

[0128] In this step, the length and width of the aluminum-plastic film are 150mm*80mm, and 2 pieces of aluminum-plastic film need to be cut.

[0129] (3) The flame retardant is coated on the surface of the aluminum-plastic film;

[0130] In this step, it is first necessary to configure a flame retardant for coating...

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Abstract

The invention discloses a production method of a power battery heat spreading protection device. The production method comprises the following steps: cutting a substrate material and an infrared shielding material; then cutting the aluminum plastic film; coating the flame retardant on the surface of the aluminum plastic film; arranging the aluminum plastic film, the substrate material and the infrared shielding material in sequence and performing clamping through a clamp; then hot-pressing and sealing partial boundaries, and keeping one edge not subjected to hot sealing; then adding a phase change material; and finally hot-pressing and sealing the residual boundary. The production method of the power battery heat spreading protection device is simple to operate and low in production cost, the produced battery heat spreading protection device is good in surface smoothness, and the overall compression strength of the device is high after hot pressing sealing; in addition, the product parameters such as the use amount of the phase change material and the use amount of the ceramic fiber material substrate of the protection device can be regulated and controlled in the production process, the product research and development speed can be increased, the calibration of the technical parameters of the product is also facilitated, and high practicability is achieved in the research and development and trial-manufacture stages of the battery heat spreading protection device.

Description

technical field [0001] The invention relates to the field of safety protection of electric vehicle power battery modules, in particular to a production method of a power battery heat spread protection device. Background technique [0002] In recent years, with the rapid development of electric vehicles, the thermal safety of electric vehicle power batteries has also received more and more attention. The beginning of electric vehicle safety accidents is the thermal runaway of a single power battery. In the battery system, a single battery will generate a large amount of heat after thermal runaway, and the large amount of heat released in a short period of time will be quickly transferred to its adjacent battery. Adjacent batteries will also experience thermal runaway after absorbing a certain amount of heat, which will lead to the thermal runaway spread of the battery system, and the battery system will release a large amount of energy accompanied by smoke, fire or explosion,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/625H01M10/658H01M10/659
CPCH01M10/625H01M10/658H01M10/659Y02E60/10
Inventor 郑思奇常润泽徐成善
Owner 昆山清安能源科技有限公司