PROBLEM TO BE SOLVED: To suppress discomfort due to ambient noise of a cooling fan, and quickly send air which is retained in a cooling channel for checking sucked air temperature in an early stage.SOLUTION: A cooling fan driving control part 22A performs variable control for changing a revolution number of a cooling fan 18 according to temperature T_Bat of a battery pack 10 in a range of equal to or less than a maximum permissible revolution number of the cooling fan 18 determined according to vehicle speed. An air flow integration part 22C integrates an air flow of the cooling fan 18 based on a revolution number of the cooling fan 18 since a start time of the cooling fan 18, for determining a fed air volume Va. A cooling fan driving determination part 22E determines sucked air temperature T_Air from a sucked air temperature sensor 46 when the fed air volume Va becomes equal to or more than a volume V_th from an inlet 30 of air on a suction channel 20 to a sucked air temperature sensor 46, and when the sucked air temperature T_Air is equal to or more than the temperature T_Bat of the battery pack 10, outputs a driving stop instruction of the cooling fan 18.SELECTED DRAWING: Figure 1

    【課題】冷却ファンの騒音による不快感を抑制させつつ迅速に冷却流路内の滞留空気を送出させ、早期の吸気温度チェックを可能にする。【解決手段】冷却ファン駆動制御部22Aは、車両速度に応じて定められる冷却ファン18の最大許容回転数以下の範囲で、電池パック10の温度T_Batに応じて冷却ファン18の回転数を変化させる可変制御を行う。風量積算部22Cは、冷却ファン18の起動時から起算して、冷却ファン18の回転数に基づいた冷却ファン18の風量を積算して、送出空気体積Vaを求める。冷却ファン駆動判定部22Eは、送出空気体積Vaが、吸気流路20における空気の取り込み口30から吸気温度センサ46に至るまでの体積V_th以上になったときに吸気温度センサ46から吸気温度T_Airを取得し、吸気温度T_Airが電池パック10の温度T_Bat以上であるときに冷却ファン18の駆動停止指令を出力する。【選択図】図1


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    Title :

    ON-VEHICLE BATTERY PACK COOLING SYSTEM


    Additional title:

    車載電池パック冷却システム


    Contributors:

    Publication date :

    2018-06-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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



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