The invention relates to the technical field of new energy, and discloses a charging pile with automatic high-temperature overload protection, which comprises a shell, a piezoresistor is fixedly connected to the top of the inner wall of the shell, a movable cavity is formed in the bottom of the inner wall of the shell, an electromagnet is fixedly connected to the bottom of the inner wall of the movable cavity, and a first spring is fixedly connected to the upper surface of the electromagnet; a fixing block is fixedly connected to the top of the first spring, a magnetic block is fixedly connected to the middle of the fixing block, and a dielectric plate is fixedly connected to the upper surface of the fixing block. According to the charging pile with automatic high-temperature overload protection, through the principle of thermal expansion and cold contraction, a heat conduction ring is used for absorbing surrounding heat, so that gas in an air bag is heated to drive the air bag to expand, an electric contact is pushed to a conductive point, and then a piezoresistor, an electromagnet and a dielectric plate are used in cooperation; therefore, the relative area of the positive plate and the negative plate is changed, the current in the circuit is changed, and the effect of high-temperature overload automatic power-off is achieved.
本发明涉及新能源技术领域,且公开了一种具有自动高温过载保护的充电桩,包括壳体,所述壳体内壁的顶部固定连接有压敏电阻,壳体内壁的底部开设有活动腔,活动腔内壁的底部固定连接有电磁铁,电磁铁的上表面固定连接有第一弹簧,第一弹簧的顶部固定连接有固定块,固定块的中部固定连接有磁块,固定块的上表面固定连接有电介质板。该具有自动高温过载保护的充电桩,通过热胀冷缩的原理,利用导热环吸收周围的热量,使得气囊内的气体受热带动气囊膨胀,将电触点推动至导电点处,然后在通过压敏电阻、电磁铁以及电介质板的配合使用,得以改变正极板与负极板的相对面积,使得电路中的电流得到改变,从而达到了高温过载自动断电的效果。
Charging pile with automatic high-temperature overload protection
一种具有自动高温过载保护的充电桩
2021-03-02
Patent
Electronic Resource
Chinese
Overload protection device and overload protection method for charging pile
European Patent Office | 2022
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