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A new energy battery pack heat-conducting sealing material and preparation method thereof
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A technology for sealing materials and battery packs, applied in sealing materials, battery pack components, electronic equipment, etc., can solve the problems of strong corrosiveness of battery fluid, low thermal conductivity, poor sealing performance, etc.
Active Publication Date: 2021-04-09
苏州矽美科导热科技有限公司
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[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, impactpuncture resistance and sealing performance
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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] 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.
[0041] Further, the thermally conductive filler is selected from a mixture of micron-sized alumina and zincoxide.
[0042] The substrate is preferably a polyimide film (PI film), and the surface of the substrate is provided with several uniform composite holes.
[0043] Its preparation process is processed according to the following steps:
[0044] Step S1: Take the surface treatment agent and coat one side ...
Embodiment 2
[0049] 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 :
[0050] 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.
[0051] Further, the thermally conductive filler is selected from a mixture of micron-sized boronnitride, aluminum nitride and siliconnitride.
[0052] The substrate is preferably a polyimide film (PI film), and the surface of the substrate is provided with several uniform composite holes.
[0053] Its preparation process is processed according to the following steps:
[0054] Step S1: Take the surface trea...
Embodiment 3
[0059] 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 :
[0060] 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.
[0061] Further, the thermally conductive filler is selected from a mixture of micron-sized aluminum nitride, silicon nitride and aluminum powder.
[0062] The substrate is preferably a polyimide film (PI film), and the surface of the substrate is provided with several uniform composite holes.
[0063] Its preparation process is processed according to the following steps:
[0064] Step S1: Take the surface tre...
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Abstract
The invention discloses a heat-conducting sealing material for a new energybattery pack and a preparation method thereof, and relates to the technical field of heat-conducting materials. It is processed according to the following steps: take a surface treatment agent and coat one side surface of the surface medium layer material, and heat it at 80 Slowly and evenly bake at ℃~95℃ until the surface treatment agent is completely dried; Weigh the resin matrix, thermal conductive filler and additives, mix and stir, after the stirring is completed, add the phase change material and stir to obtain the semi-finished product of thermal conductive material ; Coat the semi-finished product of the heat-conducting material on the side of the surface medium layer material coated with the surface treatment agent, use a forming roller or a forming scraper to process the heat-conducting interface material, and slowly and uniformly solidify at 125°C to obtain a phase-change heat-conducting layer material; Step S4: Keeping the temperature at 120±10°C, the prepared heat-conducting silica gel layer, the prepared base material and the phase-change heat-conducting material are integrally calendered, kept under pressure and air-cooled to obtain the heat-conducting sealing material for the new energybattery pack.
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 energybattery 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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