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Fire extinguishing pipe assembly, battery heat management device, battery system and electric vehicle

A technology of battery thermal management and fire extinguishing tubes, which is applied to secondary batteries, exhaust plug devices, battery pack components, etc., can solve problems such as flame generation, safety accidents, power battery thermal failure, etc., and reduce safety accidents The chances of reducing the chances of flames continuing to spread and improving safety and reliability

Pending Publication Date: 2021-12-03
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the liquid cooling plate can reduce the temperature of the power battery, the power battery still has thermal failure. When the power battery fails thermally, a flame will be generated.
Usually, when the user finds the flame, the flame is already large, and it is difficult to extinguish the fire with a fire extinguisher, which is more prone to safety accidents
It can be seen that in the prior art, the safety performance of the battery thermal management device is relatively low

Method used

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  • Fire extinguishing pipe assembly, battery heat management device, battery system and electric vehicle
  • Fire extinguishing pipe assembly, battery heat management device, battery system and electric vehicle
  • Fire extinguishing pipe assembly, battery heat management device, battery system and electric vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0040] This embodiment provides a fire extinguishing pipe assembly, which is applied to the battery thermal management device, and can quickly extinguish the fire at the initial stage of the flame generated by the power battery due to thermal failure, thereby reducing the probability of safety accidents, so that the battery thermal management device and the battery The system can have higher security.

[0041] Such as figure 1 As shown, the fire extinguishing pipe assembly includes a first main pipe 1, a second main pipe 2 and a branch pipe 3.

[0042] Wherein, the first main pipe 1 is connected to the outlet of the heat dissipation module of the battery thermal management device, so that the heat dissipation module can deliver the cooled coolant to the first main pipe 1 . In some embodiments, the first main pipe 1 is directly connected to the outlet of the cooling module; in other embodiments, the first main pipe 1 is indirectly connected to the outlet of the cooling module ...

Embodiment 2

[0066] This embodiment also provides a battery heat management device, which can be used to cool down the battery module in the battery system, and can also extinguish the battery module when the battery module generates flames.

[0067] Among them, such as Image 6 As shown, the battery thermal management device includes a liquid cooling plate 100, a heat dissipation module (not shown) and the fire extinguishing pipe assembly in the first embodiment. One end of the liquid cooling plate 100 is connected and communicated with the first main pipe 1 , so that the cooling liquid in the first main pipe 1 can also enter the liquid cooling plate 100 . The other end of the liquid cooling plate 100 is connected and communicated with the second main pipe 2 , so that the cooling liquid in the liquid cooling plate 100 can enter the second main pipe 2 . The first main pipe 1 communicates with the outlet of the cooling module, and the second main pipe 2 communicates with the inlet of the c...

Embodiment 3

[0069] This embodiment provides a battery system, which is applied to new energy vehicles and has high safety and reliability in use.

[0070] Among them, such as Figure 7 with Figure 8 As shown, the battery system includes a battery module 200 and the battery thermal management device in the second embodiment. The battery module 200 has an explosion-proof valve 2011 , specifically, the battery module 200 includes a plurality of cells 201 , each cell 201 has an explosion-proof valve 2011 , and the explosion-proof valve 2011 is located directly above the cell 201 . The branch pipe 3 of the fire extinguishing pipe assembly is located directly above the explosion-proof valve 2011. Preferably, the distance between the branch pipe 3 and the explosion-proof valve 2011 is 2-5 mm, and the injection surface of the explosion-proof valve 2011 is the top surface, so that when the explosion-proof valve 2011 sprays high-temperature and high-pressure gas, the upper branch pipe 3 can be b...

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Abstract

The invention discloses a fire extinguishing pipe assembly, a battery heat management device, a battery system and an electric vehicle, and belongs to the technical field of electric vehicles. The fire extinguishing pipe assembly comprises: a first main pipe, WHEREIN the first main pipe is communicated with an outlet of a heat dissipation module of the battery heat management device; a second main pipe parallel to and opposite to the first main pipe, wherein the second main pipe communicates with the inlet of the heat dissipation module; and a branch pipe, wherein one end of the branch pipe is connected and communicated with the first main pipe through a first connector, the other end of the branch pipe is connected and communicated with the second main pipe through a second connector, the branch pipe is located above the anti-explosion valve of the battery module, and the branch pipe can be cut off by gas sprayed out of the anti-explosion valve. According to the battery thermal management device and the battery system, fire can be extinguished quickly at the initial stage of flame generation caused by thermal failure of the power battery, so that the probability of safety accidents can be reduced, and the battery thermal management device and the battery system can have relatively high safety.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a fire extinguishing pipe assembly, a battery thermal management device, a battery system and an electric vehicle. Background technique [0002] New energy vehicles have the advantages of high energy efficiency, zero emissions, no pollution, high specific energy, low noise and high reliability, and can be promoted as alternative fuel vehicles. [0003] All new energy vehicles use power batteries as energy storage components. The power battery can realize the normal driving of the vehicle, the power demand of high and low voltage components, the recovery of braking energy, and the energy regulation of the hybrid engine system. However, there is a problem that the temperature of the power battery will rise during use. Therefore, the temperature of the power battery needs to be cooled by a battery thermal management device. [0004] In the prior art, the battery thermal m...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/625H01M10/6554H01M10/6567H01M50/30A62C3/07A62C3/16A62C31/00A62C37/00
CPCH01M10/613H01M10/625H01M10/6554H01M10/6567H01M50/30A62C3/07A62C3/16A62C31/00A62C37/00Y02E60/10
Inventor 卢军王德平孙焕丽于长虹许立超刘鹏荣常如乔延涛
Owner CHINA FIRST AUTOMOBILE
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