The invention discloses an electric vehicle, and an electric heater, an electric cavity and a pressure balance structure thereof. The pressure balance structure comprises a sealing plug arranged on the side wall of the electric cavity of the electric heater, and the side wall is provided with a first hole and a second hole which are coaxial. The sealing plug comprises: a first part used for being in interference fit with the first hole, wherein the outer edge of the first part can deform to form a gap with the first hole when the gas pressure difference between the two sides of the first part reaches a preset value; a second part provided with a gas channel and used for being matched with the second hole; and a third part connected with the first part and the second part and used for avoiding the gas channel to make gas flow through a gap between the first part and the first hole, the periphery of the third part and the gas channel. According to the technical scheme, the internal and external pressure difference of the internal cavity of the electric heater is balanced, and the waterproof effect is achieved.

    本申请公开了一种电动车辆及其电加热器、电气腔以及压力平衡结构,该压力平衡结构包括设置于电加热器的电气腔的侧壁上的密封塞,侧壁上设置有同轴的第一孔和第二孔,该密封塞包括:第一部分,用于与第一孔过盈配合,第一部分的外缘设置为能够在第一部分两侧的气体压力差达到预定值时变形而与第一孔之间形成间隙;第二部分,第二部分具有气体通道,用于与第二孔配合;以及第三部分,该第三部分连接第一部分和第二部分并避让气体通道设置,以使气体能够经过第一部分与第一孔之间的间隙、第三部分的外周和气体通道流动。根据本申请的技术方案,实现平衡电加热器内部腔室的内外压差并兼顾防水效果。


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    Title :

    Electric vehicle, and electric heater, electric cavity and pressure balancing structure thereof


    Additional title:

    电动车辆及其电加热器、电气腔以及压力平衡结构


    Contributors:
    CHENG YAO (author) / YANG CHENG (author) / SHEN ZHIWEN (author) / WANG HUIFANG (author) / ZHOU JIANDANG (author) / WEI XIANYU (author) / WANG PENG (author) / CHANG TAO (author) / JIANG YI (author)

    Publication date :

    2021-09-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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



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