New energy battery pack heat-conductive sealing material and preparation method thereof

A sealing material, battery pack technology, applied in sealing materials, battery pack components, electronic equipment, etc., can solve the problems of strong battery fluid corrosion, poor sealing performance, low thermal conductivity, etc., and achieve strong mechanical strength and insulation. performance, ensure the safety of use, and enhance the effect of corrosion resistance

Active Publication Date: 2019-01-29
苏州矽美科导热科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the design of the invention is to supplement the existing heat-conducting sealing materials in order to solve the problems of poor sealing performance, potential safety hazards such as extremely corrosive battery fluid, easy puncture, and low thermal conductivity of the existing new energy battery pack heat-conducting sealing materials. For the technical solution of preparation and production, we develop and propose a new energy battery pack heat conduction sealing material, which changes the product structure of the traditional battery pack heat conduction seal material, and has good thermal conductivity, shock absorption, impact puncture resistance and sealing performance

Method used

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  • New energy battery pack heat-conductive sealing material and preparation method thereof
  • New energy battery pack heat-conductive sealing material and preparation method thereof
  • New energy battery pack heat-conductive sealing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment 1 provides a thermally conductive sealing material for a new energy battery pack, including a thermally conductive silicone layer, a base material and a phase change thermally conductive layer integrally formed sealing material, the thermally conductive silicone layer is prepared from the following raw materials in parts by weight :

[0040]

[0041] Further, the crosslinking agent is hydrogen-containing organopolysiloxane, preferably methyl hydrogen-containing silicone oil, with a hydrogen content of 0.2% (by mass), and a viscosity of 800 mPa·s at 25°C.

[0042] Further, the thermally conductive filler is selected from a mixture of micron-sized alumina and zinc oxide.

[0043] The substrate is preferably a polyimide film (PI film), and the surface of the substrate is provided with several uniform composite holes.

[0044] Its preparation process is processed according to the following steps:

[0045] Step S1: Take the surface treatment agent and co...

Embodiment 2

[0050] This embodiment 1 provides a thermally conductive sealing material for a new energy battery pack, including a thermally conductive silicone layer, a base material and a phase change thermally conductive layer integrally formed sealing material, the thermally conductive silicone layer is prepared from the following raw materials in parts by weight :

[0051]

[0052] Further, the crosslinking agent is hydrogen-containing organopolysiloxane, preferably methyl hydrogen-containing silicone oil, with a hydrogen content of 0.25% (by mass), and a viscosity of 500 mPa·s at 25°C.

[0053] Further, the thermally conductive filler is selected from a mixture of micron-sized boron nitride, aluminum nitride and silicon nitride.

[0054] The substrate is preferably a polyimide film (PI film), and the surface of the substrate is provided with several uniform composite holes.

[0055] Its preparation process is processed according to the following steps:

[0056] Step S1: Take the ...

Embodiment 3

[0061] This embodiment 1 provides a thermally conductive sealing material for a new energy battery pack, including a thermally conductive silicone layer, a base material and a phase change thermally conductive layer integrally formed sealing material, the thermally conductive silicone layer is prepared from the following raw materials in parts by weight :

[0062]

[0063]

[0064] Further, the crosslinking agent is hydrogen-containing organopolysiloxane, preferably methyl hydrogen-containing silicone oil, with a hydrogen content of 0.3% (by mass), and a viscosity of 800 mPa·s at 25°C.

[0065] Further, the thermally conductive filler is selected from a mixture of micron-sized aluminum nitride, silicon nitride and aluminum powder.

[0066] The substrate is preferably a polyimide film (PI film), and the surface of the substrate is provided with several uniform composite holes.

[0067] Its preparation process is processed according to the following steps:

[0068] Step ...

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Abstract

The invention discloses a new energy battery pack heat-conductive sealing material and a preparation method thereof and relates to the technical field of heat-conductive materials. The preparation method includes: 1) coating one side of a surface medium layer material with a surface treatment agent, slowly and uniformly roasting the material at 80-95 DEG C until the surface treatment agent is completely dried; 2) weighing a resin matrix, heat-conductive packing and an additive, mixing and stirring the components, then adding a phase-change material with stirring to obtain a heat-conductive material semiproduct; 3) coating the side, coated with the surface treatment agent, of the surface medium layer material with the heat-conductive material semiproduct, processing the heat-conductive interface material by means of a shaping roller or a shaping scraper, and slowly and uniformly curing the material at 125 DEG C to form a phase-change heat-conductive layer material; 4) maintaining the temperature at 120 +/- 10 DEG C, and performing integrated calendering shaping on the heat-conductive silica gel layer, the base material and the phase-change heat-conductive layer material, and performing pressure-maintaining air cooling to obtain the new energy battery pack heat-conductive sealing material.

Description

technical field [0001] The invention relates to the technical field of heat-conducting materials, and more specifically, to a heat-conducting sealing material for a new energy battery pack and a preparation method thereof. Background technique [0002] New energy electric vehicles have become a mainstream trend to solve urban transportation, energy, environment and other issues, and it is also an important direction for the future development of the automobile industry. The safety of new energy vehicles has also attracted more and more attention. As the main power of new energy vehicles, the performance of power batteries is getting more and more attention. The failure of power batteries is an important cause of safety problems. Most of the failures of new energy vehicles are caused by power batteries. When the battery is impacted by external force, excessive charging and discharging, and heat accumulation, battery leakage may occur; problems such as partial short circuit a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B25/20B32B17/02B32B17/10B32B25/02B32B25/08B32B27/28B32B3/24B32B33/00B32B37/06B32B37/08B32B37/10C08L83/07C08K3/22C08K3/38C08K3/08C08K3/34C08J3/24H01M2/08H01M50/197
CPCC08J3/246B32B3/266B32B5/02B32B25/02B32B25/08B32B25/20B32B27/12B32B27/281B32B33/00B32B37/06B32B37/08B32B37/10B32B2307/558B32B2307/714B32B2307/304B32B2307/302B32B2255/24B32B2255/26B32B2255/28B32B2255/02B32B2264/102B32B2264/10B32B2264/105B32B2264/12B32B2262/101B32B2457/10C08J2483/07C08K3/38C08K3/34C08K2003/0812C08K2003/285C08K2003/2296C08K2003/2227C08J2383/07H01M50/183Y02E60/10
Inventor 刘成彬张亮
Owner 苏州矽美科导热科技有限公司
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