PROBLEM TO BE SOLVED: To restrain consumption of a flow passage switching part, and to reduce a rotation speed sudden change and a noise by a load variation in a pump, by restraining the connection and cutoff of a circuit from being frequently repeated, every time when cooling water warmed before starting the circulation passes through a temperature detection part.SOLUTION: A cooling water circulation device comprises a first cooling water flow passage 62 for exchanging heat between cooling water of circulating on the inside and a battery 60, a second cooling water flow passage 73 for circulating the cooling water for exchanging heat with a power module 70, a first three-way valve 30 and a second three-way valve 31 for connecting or cutting off the first cooling water flow passage 62 and the second cooling water flow passage 73 on the basis of the battery water temperature Tb and the power module water temperature Tm. The battery water temperature Tb used when determining flow passage switching is the temperature when the battery water temperature Tb is uniformized by circulating the cooling water of the first cooling water flow passage 62.SELECTED DRAWING: Figure 4

    【課題】循環開始前に温められていた冷却水が温度検出部を通過するたびに、回路の接続と遮断が頻繁に繰り返されることを抑制することで、流路切替部の消耗を抑えるとともに、ポンプの負荷変動による回転数急変や騒音を低減する。【解決手段】冷却水循環装置は、内部を循環する冷却水とバッテリ60との間で熱交換を行う第1冷却水流路62と、パワーモジュール70と熱交換を行う冷却水が循環する第2冷却水流路73と、バッテリ水温Tbとパワーモジュール水温Tmとに基づいて第1冷却水流路62と第2冷却水流路73とを接続、又は遮断する第1三方弁30及び第2三方弁31と、を備える。流路切替判定時に用いられるバッテリ水温Tbは、第1冷却水流路62の冷却水が循環してバッテリ水温Tbが均一化されているときの温度である。【選択図】図4


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    Title :

    COOLING WATER CIRCULATION DEVICE


    Additional title:

    冷却水循環装置


    Contributors:

    Publication date :

    2016-08-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL



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