Heat insulation plate, battery module and battery pack

A technology of battery modules and heat shields, which is applied to secondary batteries, circuits, electrical components, etc., and can solve problems such as unfavorable heat dissipation of batteries

Pending Publication Date: 2020-04-14
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a heat insulation board, battery module and battery pack for the problem that traditional heat insulation materials are unfavorable to the heat dissipation of the battery during normal use.

Method used

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  • Heat insulation plate, battery module and battery pack
  • Heat insulation plate, battery module and battery pack
  • Heat insulation plate, battery module and battery pack

Examples

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Embodiment Construction

[0048] In order to make the above objects, features and advantages of the present application more clearly understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0049] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it ...

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Abstract

The invention relates to a heat insulation plate, a battery module and a battery pack. The heat insulation plate comprises a heat insulation frame, a composite heat conduction material layer and a heat shrinkage film. The heat insulation frame is a supporting frame with an opening. The thermal shrinkage film is connected with the opening of the heat insulation frame so as to surround the heat insulation frame to form a containing cavity. The containing cavity is filled with the composite heat conduction material layer, when the temperature is within the normal temperature range, the compositeheat conduction material layer can play a good heat conduction role, and the composite heat conduction material layer and the heat insulation frame form at least one contact interface. When the environment temperature reaches a preset temperature, the thermal shrinkage film deforms and falls off from the opening of the heat insulation frame, the composite heat conduction material layer is changedinto a liquid state in phase, and the composite heat conduction material layer flows out from the opening of the heat insulation frame. At this time, only the heat-insulating frame remains on the heatinsulation plate, and the average heat conductivity coefficient of the heat insulation plate is reduced, thereby suppressing heat propagation.

Description

technical field [0001] The present application relates to the technical field of power batteries, and in particular, to a heat shield, a battery module and a battery pack. Background technique [0002] With the rapid development of electric vehicles, the safety of electric vehicle power battery system restricts the rapid development of electric vehicles. The safety accident of electric vehicle power battery is mainly characterized by the thermal runaway spread of the battery module. After the thermal runaway of the power battery cell, the high temperature will be quickly transferred to the adjacent cells, which will cause the chain thermal runaway spread and cause fire. Explosion and other safety accidents, inhibiting the spread of thermal runaway heat of the power battery to the surrounding batteries is an important means to ensure the safety of passengers' lives and property. [0003] At present, the method of suppressing the heat spread of power batteries mainly adopts t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/658H01M10/6552H01M10/653H01M10/625
CPCH01M10/625H01M10/653H01M10/6552H01M10/658Y02E60/10
Inventor 黄文盛冯旭宁卢兰光韩雪冰欧阳明高王贺武杜玖玉
Owner TSINGHUA UNIV
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