TH15544U - Cooling system for battery packs in electric vehicles. - Google Patents

Abstract

Page 1 of 1. Abstract of the Invention. This invention relates to a cooling system for a battery pack in an electric vehicle, comprising: - A cabin air conditioning subsystem 220, consisting of an evaporator 222, a condenser 320, and a compressor 310, with refrigerant circulating within this subsystem; - A battery pack cooling subsystem 120 to reduce the temperature of the battery pack 110, comprising an evaporator 122 that receives the refrigerant cooled by the condenser 320. Specifically, the battery pack cooling subsystem 120 is housed in a closed-loop housing 130, with a non-flammable or inert gas circulating within. This invention's system relies on the vehicle's internal cooling system to dissipate heat. Heat is generated for the battery pack. To ensure the battery pack can function at its full potential and extend its lifespan, it also helps to conserve energy.

Claims (8)

Page 1 of 2: Claims 1. The battery pack cooling system in an electric vehicle consists of: - The cabin air conditioning subsystem (220), which consists of an evaporator (222), a condenser (320), and a compressor (310), with the refrigerant circulating within this subsystem. - The battery pack cooling subsystem (120) to reduce the temperature of the battery pack (110), which consists of an evaporator (122) that receives the refrigerant that has been cooled by the condenser (320). A distinctive feature is that the battery pack cooling subsystem (120) is housed in a closed-loop housing (130) with a non-flammable or inert gas circulating within it. 2. Cooling system for battery packs, as per claim 1, where the non-flammable gas is nitrogen gas. 3. Cooling system for battery packs, in accordance with claim 1, whereby the battery pack cooling subsystem (120) is also included with a fan (124) to circulate non-flammable or inert gases in the enclosed housing. 4. Cooling system for battery packs, in accordance with claim 1, whereby the battery pack cooling subsystem (120) also includes a control system for releasing non-flammable or inert gases (140) to maintain pressure in the enclosed housing (130). 5. Cooling system for battery packs, according to claim 4, where the non-flammable or inert gas release control system (140) consists of a non-flammable or inert gas container (142), a pressure transmitter (144) for measuring the pressure in the closed housing (130), a pressure controller (146) which receives signals from the pressure transmitter (144) to control the opening and closing of the pressure regulating valve (148), and the pressure regulating valve (148) which supplies or blocks non-flammable or inert gas from the container (142) to adjust the pressure in the closed housing (130). Page 2 of 2 pages. 6. Cooling system for battery packs, in accordance with claim 1, whereby the cabin cooling subsystem (220) is further comprised of a fan (224) for circulating the air inside the cabin (210). 7. Cooling system for battery packs, according to claim 1, where the cabin cooling subsystem (220) is further comprised of a fan (330) to draw outside air through a condenser coil or condensing unit (320) to reduce the temperature of the cooling fluid. 8. Cooling system for battery packs, according to claim 1 or 7, where the heating coil or condenser (320), which is responsible for cooling the temperature of the cooling fluid, is connected to an expansion valve (340) for reducing the pressure of the cooling fluid before it is supplied to each subsystem.