Lithium battery safety protection device using liquid-containing heat-insulation board and battery pack

A technology of safety protection device and heat insulation board, which is applied in the direction of isolation of battery pack parts, electrical components, battery and its environment, etc. It can solve the problems of serial battery fires, inability to reduce heat, and loss of heat insulation film, etc., to achieve improved Effects of flash point, chain explosion avoidance, and explosion power reduction

Pending Publication Date: 2018-12-07
SUZHOU YOULION BATTERY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the usual practice is to install a thermal insulation film between lithium batteries. However, the thermal insulation film can only insulate heat but cannot reduce heat. The vicious accident of the explosion is still unavoidable

Method used

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  • Lithium battery safety protection device using liquid-containing heat-insulation board and battery pack
  • Lithium battery safety protection device using liquid-containing heat-insulation board and battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see Figure 1 to Figure 2 , the figure shows a lithium battery safety protection device using a liquid-containing heat insulation plate provided by Embodiment 1 of the present invention, which includes a porous heat insulation plate 1, and the porous heat insulation plate 1 can specifically be an airgel plate, The airgel board has a porous structure and has the effect of heat insulation, so it is a more preferred embodiment in the present invention. The airgel board belongs to the materials known in the prior art, and will not be described in detail here. The porous heat insulation The board 1 contains a liquid fire extinguishing agent. The liquid fire extinguishing agent can be water. Specifically, water can be injected into the porous heat insulation board through the porous structure of the porous heat insulation board. The porous heat insulation board 1 is provided with a leak-proof outer Packaging 2, the leak-proof outer packaging 2 can preferably be made of plasti...

Embodiment 2

[0026] Others are the same as those described in Embodiment 1, except that the liquid fire extinguishing agent 11 is a water-based fire extinguishing agent, and the added components of the water-based fire extinguishing agent can be alkyl acid salts, phosphates, ammonium salts, amphoteric surfactants, and fluorocarbon surface active agents. The active agent can specifically be S-3-AB, S-6-AB water-based fire extinguishing agent.

Embodiment 3

[0028] Others are the same as those described in Embodiment 1, except that the porous heat insulation board 1 can be specifically a porous ceramic fiber board, which also has a porous structure and has a certain heat insulation effect.

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Abstract

The invention provides a lithium battery safety protection device using a liquid-containing heat-insulation board, the lithium battery safety protection device comprises a porous heat-insulation board, the porous heat-insulation board contains a liquid fire extinguishing agent, the porous heat insulation board is externally provided with a leakage-proof outer package, the leakage-proof outer package is closed by a sealing member, and the porous heat-insulating plate and the leakage-proof outer package are fixedly mounted on the side of a lithium ion battery. The present invention also providesa lithium ion battery pack having the lithium battery safety protection device using the liquid-containing heat-insulation board. Compared with the prior art, the lithium battery safety protection device can effectively prevent the heat transfer phenomenon among single lithium batteries, reduces energy generated by the explosion of the lithium battery, and avoids the ignition of the lithium ion battery, thereby effectively reducing chain reaction produced by the ignition or explosion of the lithium ion battery, and greatly improving the safety performance of the lithium ion battery.

Description

technical field [0001] The invention relates to the field of lithium ion batteries, in particular to a lithium battery safety protection device and a battery assembly using a liquid-containing heat insulation plate. Background technique [0002] With the gradual development of new energy vehicles, lithium-ion batteries have gradually replaced gasoline as the power support for vehicles. However, the safety performance of the current lithium-ion battery still has certain restrictions on its development. Among them, the explosion situation caused by the internal short circuit of the lithium-ion battery is due to the variety of causes, the randomness and singleness of the first explosion battery, It has become the most urgent problem to be solved in the field of power batteries that the cause of explosion cannot be completely eliminated and cannot be detected before shipment. [0003] Therefore, the current research on the internal short-circuit combustion and explosion of lith...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10A62D1/00
CPCA62D1/0035A62D1/0042H01M50/24Y02E60/10
Inventor 毛焕宇
Owner SUZHOU YOULION BATTERY INC
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