To provide a vehicle cooling system which can maintain EV travel even when indoor air-conditioning takes precedence and battery cooling is inactive.SOLUTION: A vehicle cooling system includes a freezing cycle circuit 20 having an evaporator 23 which cools the air to be supplied into a vehicle cabin, and a chiller 25 which exchanges heat with a low-temperature-side cooling water circuit 30 which cools a battery 11, which are in parallel to each other. The low-temperature-side cooling water circuit 30 includes the chiller 25, a circuit for cooling the battery 11, a circuit for cooling a PCU 12, and a low-temperature-side radiator 35 which dissipates heat from circulating cooling water, which are in parallel to each other. In the freezing cycle circuit 20, coolant circulates only in the evaporator 23. When the temperature of the battery 11 is equal to or higher than a predetermined battery temperature and when the temperature of cooling water in the low-temperature-side cooling water circuit 30 is equal to or lower than a predetermined cooling water temperature, the cooling water circulates only in the circuit for cooling the battery 11 and the low-temperature-side radiator 35 in the low-temperature-side cooling water circuit 30.SELECTED DRAWING: Figure 1
【課題】車室内空調が優先されてバッテリ冷却が休止中であってもEV走行を維持することができる車両用冷却システムを提供する。【解決手段】車室内へ送風する空気を冷却するエバポレータ23と、バッテリ11を冷却する低温側冷却水回路30と熱交換するチラー25と、が並列に設けられた冷凍サイクル回路20を有し、低温側冷却水回路30は、チラー25と、バッテリ11を冷却する回路と、PCU12を冷却する回路と、循環する冷却水から放熱する低温側ラジエータ35と、が並列に設けられ、冷凍サイクル回路20においてエバポレータ23のみに冷媒を循環させており、バッテリ11の温度が所定バッテリ温度以上であって、低温側冷却水回路30の冷却水温度が所定冷却水温度以下の場合には、低温側冷却水回路30においてバッテリ11を冷却する回路および低温側ラジエータ35のみに冷却水を循環させる。【選択図】図1
VEHICLE COOLING SYSTEM
車両用冷却システム
2024-03-18
Patent
Electronic Resource
Japanese
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
VEHICLE RADIATOR COOLING SYSTEM, VEHICLE, AND VEHICLE RADIATOR COOLING METHOD
European Patent Office | 2018
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