4results about How to "Play a braking effect" patented technology

The utility model discloses a device for preventing reverse power generation of an automobile tail door motor and a vehicle. The device comprises a reverse power generation prevention circuit, a turn-off circuit, a sampling circuit, a micro-control unit, a pre-drive chip and a full-bridge circuit. The anti-reverse circuit is electrically connected with the storage power supply and the base power supply respectively, the turn-off circuit is electrically connected with the anti-reverse circuit, the sampling circuit comprises a storage sampling circuit and a base sampling circuit, and the storage sampling circuit and the base sampling circuit are connected with the storage power supply and the base power supply respectively. The micro-control unit is respectively connected with the power storage sampling circuit and the base sampling circuit, meanwhile, the micro-control unit is electrically connected with the turn-off circuit, the pre-drive chip is electrically connected with the micro-control unit, and the full-bridge circuit is respectively and electrically connected with the base power supply, the pre-drive chip and the motor. According to the device for preventing reverse power generation of the automobile tail door motor and the vehicle, the problem that a circuit of a full-bridge mos tube is prone to being burnt out under the high-voltage condition can be solved.

This utility model discloses a safe medical rail logistics anti-derailment structure, relating to the field of rail logistics anti-derailment technology. It includes a rail body and a rail logistics vehicle. Limiting mechanisms for preventing derailment are provided on both sides of the rail body, and a rotating mechanism is provided in the middle of the rail body. The limiting mechanisms include telescopic devices located on both sides of the rail body, with connecting rods fixedly connected to their surfaces. This utility model utilizes the driving force of the rail logistics vehicle to drive limiting balls to roll within a limiting sliding track. Limiting plates limit the connecting rods, preventing them from tilting under external force, thus enhancing the stability of the rail logistics vehicle. When the rail logistics vehicle's brakes fail, as it passes both ends of the rail body, the limiting balls are spring-loaded and engaged in limiting holes, effectively stopping the rail logistics vehicle.

The invention, which relates to the technical field of solar energy, discloses an anti-ponding lap joint type solar photovoltaic module comprising a composite mechanism. According to the water accumulation prevention lap joint type solar photovoltaic module, the components are fixed through the composite mechanism design and the fixing mechanism, so that the effect of keeping the structure stable is achieved, shaking of the internal structure caused by external force influence is avoided, component abrasion is reduced, the service life of equipment is prolonged, the photovoltaic module is protected by the composite shell, external force damage is avoided, and the service life of the equipment is prolonged. The transparent cover plate is arranged on the light receiving side of the composite shell, so that rain wash or external impact is prevented, a light source is prevented from being shielded, and the conversion efficiency is prevented from being reduced; the sliding block is controlled to slide through the linear module, so that the friction plate rubs on the surface of the transparent cover plate, and on one hand, water flow is conveniently drained from one side of the drainage mechanism; and on the other hand, water flow rubs the friction plate, so that the cleaning effect on the surface of the component is achieved, impurities are prevented from precipitating on the surface of the structure, and shielding of a light source is reduced.