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Extinguishing system for a high-voltage battery of a motor vehicle and motor vehicle with an extinguishing system

A fire extinguishing system and high-voltage battery technology, applied in the field of fire extinguishing systems, can solve problems such as thermal runaway and battery cell fire, and achieve the effect of preventing damage

Active Publication Date: 2020-01-21
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, lithium-ion cells can exhibit dangerous states due to, for example, internal short circuits, contamination or collision situations
This could lead to a battery cell fire or even thermal runaway if the transition to this dangerous state is not prevented in time

Method used

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  • Extinguishing system for a high-voltage battery of a motor vehicle and motor vehicle with an extinguishing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The schematically shown motor vehicle 1 includes an electric drive (not shown in detail) and a high-voltage battery 2 that supplies the electric drive of the motor vehicle 1 and other electrical consumers. Motor vehicle 1 also includes a fire extinguishing system 3 for high-voltage battery 2 . This fire extinguishing system 3 can, for example, be completely integrated in the high-voltage battery 2 . It is also possible, however, not to integrate specific components of fire extinguishing system 3 into high-voltage battery 2 . In the case shown here, the extinguishing system 3 comprises two extinguishing agent containers 4 , which can be aerosol cartridges, for example. The extinguishing agent container 4 contains gaseous extinguishing agent, for example in the form of an aerosol. Aerosols can contain particles that can act as fire retardant or extinguishers.

[0025] The extinguishing agent container 4 is provided with a cover which closes the extinguishing agent contai...

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PUM

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Abstract

An extinguishing system (3) for a high-voltage battery (2) of a motor vehicle (1), includes at least one extinguishing agent container (4) with a gaseous extinguishing agent; a seal for sealing the extinguishing agent container (4), which prevents an outflow of the extinguishing agent into the interior of the high-voltage battery (2); a control device (5) interacting with the seal device, designedto open the seal upon the incidence of a triggering signal, thus allowing the extinguishing agent to flow into the interior of the high-voltage battery and to displace any air included therein; an auto-ignition mechanism that interacts with the seal, which auto-ignites at a certain auto-ignition temperature and opens the seal.

Description

technical field [0001] The invention relates to a fire extinguishing system for a high-voltage battery of a motor vehicle and to a motor vehicle with a fire extinguishing system for a high-voltage battery. Background technique [0002] A high-voltage battery is usually installed in electrically driven motor vehicles, which supplies electrical energy to an electric machine for driving the motor vehicle. Very common are Li-ion based high voltage batteries. However, other battery cells can also be used. In particular, lithium-ion cells can exhibit dangerous states due to, for example, internal short circuits, contamination or collision situations. If the transition to this dangerous state is not prevented in time, this could lead to a battery cell fire or even thermal runaway. Therefore, in principle in motor vehicles with a high-voltage battery it is necessary to provide means which prevent the occurrence of a high-voltage battery fire or at least prevent the spread of a hi...

Claims

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Application Information

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IPC IPC(8): A62C3/07A62C3/16
CPCA62C3/07A62C3/16A62C37/40A62C99/0018A62C35/10A62D1/0092H01M2200/103G08B17/00
Inventor P·乌洛达茨克
Owner AUDI AG
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