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Automatic extinguishing and emergency cooling device for new energy vehicle power battery pack and using method thereof

A technology for power battery packs and new energy vehicles, used in battery temperature control, secondary batteries, and secondary battery repair/maintenance, etc. Small, low concentration of fire extinguishing effect

Inactive Publication Date: 2018-01-23
SHENZHEN GUOCHUANG POWER SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that in view of the disadvantages in the prior art that the use of dry powder fire extinguishing or nitrogen or carbon dioxide fire extinguishing methods for vehicle lithium-ion batteries is not effective, and the use of water cooling for fire extinguishing will damage the power battery, a new method is provided. Device for automatic fire extinguishing and emergency cooling of power battery pack for energy vehicles and its application method

Method used

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  • Automatic extinguishing and emergency cooling device for new energy vehicle power battery pack and using method thereof
  • Automatic extinguishing and emergency cooling device for new energy vehicle power battery pack and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The method of using the device when the power battery pack 3 leaks in an accident is as follows: when the gas probe 4 detects that there is gas emission, and when the temperature detected by the temperature sensor 32 and the smoke probe 1 are normal, a signal is sent to the vehicle controller 2. The vehicle controller 2 sends an alarm and command, simultaneously opens the check valve A7 and the check valve B6, and turns on the high-pressure air pump 5, so that the high-pressure air pump 5 will release the perfluoro-2-methyl in the fire extinguishing agent bottle 8 - 3-pentanone and the liquid from the liquid cooling system 33 are delivered to the submicron fine mist nozzle 9 at high pressure, and the submicron fine mist nozzle 9 sprays the mixed liquid to the entire battery compartment space in the form of submicron fine mist, so that the power battery pack 3 While cooling down, make it absorb the organic solvent emitted in the space to the bottom of the battery compartm...

Embodiment 2

[0066] The method of using the device when the power battery pack 3 leaks in an accident is as follows: when the gas probe 4 detects that there is gas emission, the temperature detected by the temperature sensor 32 is abnormal, and the smoke probe 1 is not abnormal, a signal is sent to the vehicle. The controller 2 and the vehicle controller 2 send out alarms and instructions, open the check valve A7 and the check valve B6 at the same time, and open the high-pressure air pump 5, so that the high-pressure air pump 5 pumps the perfluoro-2- Methyl-3-pentanone and the liquid from the liquid cooling system 33 in the power battery pack 3 are delivered to the submicron fine mist nozzle 9 under high pressure, and the submicron fine mist nozzle 9 sprays the mixed liquid to the entire battery compartment in the form of submicron fine mist Space, to cool down the power battery pack 3, and at the same time, make it absorb the organic solvent emitted in the space to the bottom of the batter...

Embodiment 3

[0068] The method of using the device when the power battery pack 3 burns or explodes in an accident is as follows: when the smoke detector 1 detects that smoke is emitted, it sends a signal to the vehicle controller 2, and the vehicle controller 2 sends an alarm and command, Open the one-way valve B6 and the high-pressure air pump 5, so that the high-pressure air pump 5 delivers the perfluoro-2-methyl-3-pentanone in the fire extinguishing agent bottle 8 to the submicron fine mist nozzle 9 under high pressure, and the submicron fine mist nozzle 9 Spray perfluoro-2-methyl-3-pentanone into the entire battery compartment space in the form of submicron fine mist, and continue spraying for 5 minutes to cool down the power battery pack and extinguish the fire.

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Abstract

The invention discloses an automatic extinguishing and emergency cooling device for a new energy vehicle power battery pack, which comprises a smoke probe, a vehicle control unit, the power battery pack, a gas probe, a mist spray nozzle, a first switching valve, a second switching valve, a transmission pump and an extinguishing agent bottle, wherein the power battery pack comprises a temperature sensor, a battery management system and a liquid cooling system; the extinguishing agent bottle is filled with a liquid extinguishing agent and is used for carrying out cooling extinguishing for the power battery pack and being connected with the liquid cooling system to cool the power battery pack; and the transmission pump is connected with the liquid cooling system by the first switching valve and connected with the extinguishing agent bottle by the second switching valve respectively for transmitting the liquid extinguishing agent from the extinguishing agent bottle or the liquid extinguishing agent from the extinguishing agent bottle and liquid in the liquid cooling system to the mist spry nozzle under a high pressure. After the automatic extinguishing and emergency cooling device is implemented, a good cooling fire-extinguishing effect can be achieved by utilizing characteristics of the liquid extinguishing agent in the extinguishing agent bottle and connection of the extinguishing agent bottle and the liquid cooling system.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a device for automatic fire extinguishing and emergency cooling of a power battery pack for new energy vehicles and a method for using the same. Background technique [0002] With the widespread application of lithium-ion batteries, their fire hazards have gradually emerged. Many influential fire accidents have occurred at home and abroad, and large-scale recalls of related products have been triggered. So far, countries have not yet formulated standards for the safe storage of lithium-ion batteries and fire-fighting and rescue operations procedures. In order to fill this gap, many countries and organizations are carrying out relevant basic theory and applied technology research. In 2011, the Property Insurance Research Group (PIRG) of the NFPA Fire Protection Research Foundation (FPRF) initiated a study on the storage hazards and fire suppression methods of lithium-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/48H01M10/613H01M10/625H01M10/63H01M10/6567
CPCY02E60/10
Inventor 茆胜
Owner SHENZHEN GUOCHUANG POWER SYST CO LTD
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