Flame-retardant separator and battery box

A battery box and separator technology, which is applied to battery pack parts, circuits, electrical components, etc., can solve problems such as the threat of thermal runaway and explosion of battery cells, and achieve thermal runaway and battery explosion prevention, isolation prevention, and high space utilization Effect

Pending Publication Date: 2019-06-18
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: how to better solve the problem of thermal runaway risk and potential explosion threat of battery cells caused by the sharp rise in heat

Method used

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  • Flame-retardant separator and battery box
  • Flame-retardant separator and battery box
  • Flame-retardant separator and battery box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, in this embodiment, the separator body 1 is made of flame-retardant materials and heat-absorbing materials. The part of the separator body 1 in contact with the surface of the battery cell 3 is a planar structure. The installation part that is installed with the battery box. The installation part in this embodiment is an integral structure with the partition body 1, which is a rectangular planar structure. The installation groove provided on the inner bottom surface of the corresponding battery box is a concave groove, but the partition board The thickness of the installation part of the main body is slightly larger than the width of the concave groove. The partition body 1 is inserted into the concave groove by external force, and the connection is made by the damping between the two. If it needs to be replaced, it can be pulled out by external force and replaced.

[0029] The flame-retardant partition in this embodiment is a single-layer str...

Embodiment 2

[0038] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is: the flame-retardant partition in this embodiment is a multi-layer structure;

[0039] In this embodiment, the partition body 1 adopts a three-layer composite structure, and its shape is rectangular. Among them, in order to achieve the effect of rapid flame retardancy, preferably, the flame retardant can be an organic or inorganic highly flame-retardant material. Organic flame retardants are represented by bromine, nitrogen, red phosphorus and compounds, and inorganic flame retardants are represented by antimony trioxide, magnesium hydroxide, aluminum hydroxide, and silicon.

[0040] In this embodiment, the same flame retardant material can be used for the three layers of the partition body 1, or different flame retardant materials can be used, and the selection criteria of the heat absorbing material are the same as in the first embodiment.

[0041] Therefore, in this embodiment, n...

Embodiment 3

[0043] Such as image 3 , 4 As shown, the difference between this embodiment and Embodiment 1 is that: the flame-retardant partition in this embodiment is a multi-layer structure; and the installation part is different;

[0044] In this embodiment, the flame-retardant partition 1 adopts a five-layer composite structure, the shape is rectangular, and the thickness of each layer is 1 mm. The flame-retardant materials used in the middle three layers are zinc borate, aluminum hydroxide, and magnesium hydroxide. There is also a layer of flame retardant made of organic or inorganic high flame retardant material on both sides of the middle layer. The thickness of the flame retardant is 0.5mm. The flame retardant can be organic or inorganic high flame retardant material. Organic flame retardant Agents are represented by bromine, nitrogen, red phosphorus and compounds, and inorganic flame retardants are represented by antimony trioxide, magnesium hydroxide, aluminum hydroxide, and sil...

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Abstract

The invention discloses a flame-retardant separator. The flame-retardant separator comprises a separator body prepared from a flame-retardant material and a heat absorption material; the surface of the separator body is of a plane structure; and the separator body is provided with a mounting part matched with a battery box for mounting. The invention further provides a battery box adopting the flame-retardant separator. The flame-retardant separator and the battery box which are disclosed by the invention have the beneficial effects that by applying the separator prepared from the flame-retardant material to the battery box, separation, heat insulation and flame retardance can be effectively implemented and heat runaway and battery explosion are prevented so as to avoid an accident; and the separator occupies a small space, so that the battery box using the flame-retardant separator is simple in structure, high in space utilization rate, low in cost and good in safety performance.

Description

technical field [0001] The invention relates to the field of lithium battery safety protection, in particular to a flame-retardant separator and a battery box. Background technique [0002] As a new type of energy, lithium batteries are currently being promoted and applied in many industries. As the number of lithium batteries used is increasing, as the number of uses increases, the number of faulty lithium batteries will also increase, and the probability of combustion and explosion will increase. However, due to the particularity of the internal structure of lithium batteries, once an internal failure occurs, it will cause combustion and explosion. If burning and explosion occurs, it may cause harm to surrounding personnel, even endanger life; it will also cause damage to the environment. [0003] At present, there are many ways of explosion-proof treatment for lithium batteries, such as application number: 201720913012.2, the patent name is lithium battery explosion-pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M2/14H01M2/16
CPCY02E60/10
Inventor 汪书苹高飞王刘芳杨凯范明豪王康康李伟王海超范茂松张杰明
Owner ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
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