US 2024/0173579 A1 · SYSTEM AND METHOD FOR EXTINGUISHING FIRE OF HIGH VOLTAGE BATTERY FOR VEHICLE

Abstract

A system and a method for extinguishing a fire of a high voltage battery for a vehicle, which supply a fire-extinguishing liquid to a fire extinguishing case in a form of a container when a fire occurs in a high voltage battery provided in a vehicle, submerging the high voltage battery in the fire-extinguishing liquid, include a battery cell assembly, a fire extinguishing case to accommodate the battery cell assembly, a fire-extinguishing liquid tank connected to the fire extinguishing case, wherein a fire-extinguishing liquid is stored in the fire-extinguishing liquid tank, a supply valve provided between the fire-extinguishing liquid tank and the fire extinguishing case and configured to supply or block the fire-extinguishing liquid from the fire-extinguishing liquid tank to the fire extinguishing case, and a controller electrically connected to the supply valve and configured to open the supply valve to supply the fire-extinguishing liquid to the fire extinguishing case when the controller concludes that the fire occurs in the battery cell assembly.

Claims20

Dependent claims

A system for extinguishing a fire of a high voltage battery, the system comprising:

a battery cell assembly;
a fire extinguishing case to accommodate the battery cell assembly therein;
a fire-extinguishing liquid tank connected to the fire extinguishing case, wherein a fire-extinguishing liquid is stored in the fire-extinguishing liquid tank:
a supply valve provided between the fire-extinguishing liquid tank and the fire extinguishing case and configured to supply or block the fire-extinguishing liquid from the fire-extinguishing liquid tank to the fire extinguishing case;
and
a controller electrically connected to the supply valve and configured to open the supply valve to supply the fire-extinguishing liquid to the fire extinguishing case when the controller concludes that the fire occurs in the battery cell assembly.

3 more elements

A method of extinguishing a fire of a high voltage battery for a vehicle, the method comprising:

a battery temperature comparison step of determining, by a controller, whether a temperature of a battery cell assembly is higher than or equal to a thermal runaway temperature;
an off-gas detecting step of determining, by the controller, whether an off-gas is generated from the battery cell assembly;
a supply valve opening step of opening, by the controller, a supply valve provided between a fire-extinguishing liquid tank which accommodates a fire-extinguishing liquid and a fire extinguishing case which accommodates the battery cell assembly, when the controller concludes that the temperature of the battery cell assembly is higher than or equal to the thermal runaway temperature or the off-gas is generated from the battery cell assembly;
and
a battery submerging step of increasing, by the controller, a liquid level of the fire-extinguishing liquid to be higher than a top surface of the battery cell assembly, when the controller concludes that the temperature of the battery cell assembly is higher than or equal to the thermal runaway temperature or the off-gas is generated from the battery cell assembly.

2 more elements

Dependencies are inferred from the claim text.

System and method for extinguishing fire of high voltage battery for vehicle

Life of this patent

System and method for extinguishing fire of high voltage battery for vehicle

Life of this patent

Abstract

Claims20