High-voltage direct-current magnetic latching relay with sensitive response

A high-voltage DC magnetic latching relay, comprising:

• stationary contact lead-out terminals, a movable spring, a pushing rod component, and a direct-acting magnetic latching magnetic circuit structure;
• wherein bottom ends of two stationary contact lead-out terminals are cooperated with two ends of the movable spring to achieve closing and opening of movable contacts and stationary contacts, the movable spring is mounted on a head of the pushing rod component by means of a main spring;
• the direct-acting magnetic latching magnetic circuit structure comprising a movable iron core, a coil assembly, a stationary iron core, a yoke plate, a yoke cylinder, and permanent magnets;
• wherein a bottom of the pushing rod component is fixedly connected to the movable iron core, the yoke plate is located underneath the head of the pushing rod component, the yoke cylinder is located below the yoke plate, the coil assembly is located inside the yoke cylinder, the coil assembly is provided with an iron core hole, the iron core hole is provided along a vertical direction, the stationary iron core is provided in the iron core hole and is located at a bottom end of the iron core hole, and the movable iron core is provided in the iron core hole and is located between the yoke plate and the stationary iron core;
• wherein the permanent magnets are mounted between the yoke plate and the coil assembly and positions of the permanent magnets corresponds to a position of the movable iron core in the vertical direction;
• and
• wherein a first spring is provided between the movable iron core and the stationary iron core, the first spring is configured to achieve a quick action of the relay, a second spring is provided between the movable iron core and the yoke plate, and the second spring is configured to achieve a quick opening of the relay.