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Heat-absorbing pouring sealant and a battery thereof

A technology for potting glue and battery modules, which is used in adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve problems such as rising costs, limited promotion of sealing requirements, and increased system complexity.

Inactive Publication Date: 2019-05-07
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned measures have been widely used in the thermal management design of lithium-ion batteries, especially liquid cooling and air cooling have made great progress in the past few years; however, in the rapid process of high energy density and low cost, their use also subject to certain restrictions
For example, the liquid cooling method requires an additional liquid cooling system, which consumes energy and has safety hazards such as liquid leakage; and when it is integrated in the module, the complexity of the system is greatly increased, and the cost is also increased.
Air cooling has a greater cost advantage, but its requirements for sealing often limit its promotion

Method used

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  • Heat-absorbing pouring sealant and a battery thereof
  • Heat-absorbing pouring sealant and a battery thereof
  • Heat-absorbing pouring sealant and a battery thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0076] The preparation method of the heat-absorbing potting glue of the embodiment of the present application can adopt the following methods:

[0077] 1. Mix the raw materials of component A evenly in proportion to prepare component A and package it separately; mix the raw materials of component B uniformly in proportion to prepare component B and package it separately;

[0078] 2. Mix component A and component B evenly at a weight ratio of 1:1, and cure at 40°C to 50°C for 15 to 45 minutes to form an endothermic potting glue.

[0079] In the embodiment of the present application, a two-component cross-linking and curing method is used to prepare the heat-absorbing potting glue, in which component A and component B are mixed evenly and have considerable fluidity to ensure that all gaps inside the power battery module are filled. After the two-component adhesive is cross-linked and cured, it forms a gel-like soft material to increase the contact between the material and the ba...

Embodiment

[0083] Preparation of heat-absorbing potting compound:

[0084] The preparation method of the endothermic potting glue of the embodiment of the present application is:

[0085] 1. Mix the raw materials of component A evenly in proportion to prepare component A and package it separately; mix the raw materials of component B uniformly in proportion to prepare component B and package it separately; among them, the endothermic potting Glue 1 # The heat-absorbing powder in it is a composite phase change material of paraffin wax and expanded graphite; the heat-absorbing potting glue 2 # The heat-absorbing powder in it is a composite phase change material of paraffin wax and carbon fiber; the heat-absorbing potting glue 3 # ~Heat-absorbing potting glue 5 # The heat-absorbing powder adopts the phase-change microcapsule whose capsule core is paraffin wax; the heat-absorbing potting glue 3 # The material of the shell of the medium phase change microcapsule is polystyrene, heat-absor...

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Abstract

The invention relates to the field of energy storage materials, in particular to a heat absorption pouring sealant and a battery thereof. Raw materials of the heat-absorbing pouring sealant comprise an organosilicon polymer, heat-absorbing powder, filler and simethicone, the organosilicon polymer accounts for 10%-30% of the total weight of the heat-absorbing pouring sealant raw materials, and theheat-absorbing powder accounts for 45%-65% of the total weight of the heat-absorbing pouring sealant raw materials. The heat absorption powder is selected from at least one of a solid phase change material and a phase change microcapsule, and the solid phase change material is a composite phase change material of the phase change material and expanded graphite or carbon fibers. The heat-absorbingpouring sealant disclosed by the embodiment of the invention has heat-absorbing capacity and heat-conducting capacity at the same time, the content of the heat-absorbing powder is increased on the premise of ensuring that the pouring sealant has considerable flowability, the heat-absorbing capacity can be increased to the maximum extent, and the temperature rise of the battery is reduced.

Description

technical field [0001] This application relates to the field of energy storage materials, in particular, to a heat-absorbing potting glue and a battery thereof. Background technique [0002] With the rapid development of electric vehicles, the performance of lithium-ion batteries has also made great progress in all aspects. It has always been the goal of the development of the lithium battery industry to achieve cost performance comparable to that of fuel vehicles by increasing the energy density of power batteries. However, the increase in energy density will lead to a faster and higher temperature rise during battery use. Therefore, improving energy density while ensuring that the battery works in a reasonable temperature range has become the primary goal of power battery thermal management. [0003] At present, the main methods of power battery thermal management include: [0004] Liquid cooling temperature control: use the coolant in the liquid cooling device to take ...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J11/04C09J11/08
Inventor 王伟
Owner CONTEMPORARY AMPEREX TECH CO
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