To provide a heat management system of an electric vehicle that can suppress frequent switching between operation of releasing heat of a motor to outside air and operation of taking in heat of outside air for heating.SOLUTION: A heat management system disclosed in the specification comprises a circulation path through which a motor cooler, an outside heat exchanger and a heater are connected to one another, a switch valve and a controller. When the switch valve is at a first valve position, a heat medium circulates between the outside heat exchanger and the heater, and flow of the heat medium is blocked between the outside heat exchanger and the motor cooler. When the switch valve is at a second valve position, the heat medium circulates between the outside heat exchanger and the motor cooler, and flow of the heat medium is blocked between the outside heat exchanger and the heater. In a heating mode in which the heater is activated, the controller sets the switch valve at the first valve position when a temperature of a motor is below a motor temperature threshold, and sets the switch valve at the second valve position when the temperature of the motor is above the motor temperature threshold. The controller, when loads or predicted load values of the motor exceed a load threshold, holds the switch valve at the second valve position in a predetermined holding period of time.SELECTED DRAWING: Figure 3

    【課題】本明細書は、モータの熱を外気に放出する動作と、暖房用に外気の熱を取り込む動作の頻繁な切り換えを抑制する。【解決手段】本明細書が開示する熱管理システムは、モータ冷却器と外気熱交換器と暖房器を接続する循環路、切換弁、制御器を備える。切換弁が第1弁位置のとき、外気熱交換器と暖房器の間を熱媒が循環し外気熱交換器とモータ冷却器との間で熱媒の流れが遮断される。切換弁が第2弁位置のとき、外気熱交換器とモータ冷却器の間を熱媒が循環し外気熱交換器と暖房器の間で熱媒の流れが遮断される。制御器は、暖房器を作動させる暖房モードにおいて、モータ温度がモータ温度閾値を下回っている間は切換弁を第1弁位置に設定し、モータ温度閾値を上回っている間は切換弁を第2弁位置に設定する。制御器は、モータの負荷または負荷予測値が負荷閾値を超えた場合、予め定められた保持時間の間、切換弁を第2弁位置に保持する。【選択図】図3


    Access

    Download


    Export, share and cite



    Title :

    HEAT MANAGEMENT SYSTEM OF ELECTRIC VEHICLE


    Additional title:

    電気自動車用の熱管理システム


    Contributors:

    Publication date :

    2022-12-06


    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



    Heat management system for electric vehicle

    SAKAMOTO HIRONOBU / ISHIHARA YOSHIHIRO | European Patent Office | 2023

    Free access

    Heat management system for electric vehicle

    HASEGAWA YOSHIO / OHASHI HIROO / FURUKAWA SATOSHI et al. | European Patent Office | 2023

    Free access

    HEAT MANAGEMENT SYSTEM FOR ELECTRIC VEHICLE

    SAKAMOTO HIRONOBU / ISHIHARA YOSHIHIRO | European Patent Office | 2021

    Free access

    Electric vehicle integrated heat management system

    LEE WON SUK / KIM CHUL MIN / BAE MYUNG JIK et al. | European Patent Office | 2019

    Free access

    HEAT MANAGEMENT SYSTEM FOR ELECTRIC VEHICLE

    MATSUTANI TAKASHI | European Patent Office | 2022

    Free access