Energy-saving-type multi-contact-set direct-current contactor

Abstract

The invention discloses an energy-saving-type multi-contact-set direct-current contactor which has practicability, and belongs to the technical field of electric car engine fittings. The energy-saving-type multi-contact-set direct-current contactor is composed of an injection molding insulation outer shell, a driving motor, a plurality of stationary contact sets, a plurality of movable contact sets and the like. The driving motor which is installed inside the injection molding insulation outer shell drives a screw to rotate through forward rotation or inversed rotation, and therefore a pushing rod is driven to generate the pushing or pulling mechanical motion. A movable contact arm is installed on the pushing rod. The movable contact sets are arranged on the movable contact arm. The pushing rod drives the movable contact sets to move left and right between the stationary contact sets. A photoelectric position sensor detects the motion position of the pushing rod and controls the driving motor to run down. The stationary contact sets are fixed inside the injection molding insulation outer shell. The energy-saving-type multi-contact-set direct-current contactor is applied in a three-phase direct-current motor, the space is greatly saved, the power consumption when a device moves is saved, the energy-saving and consumption-reducing effects are achieved, the energy-saving-type multi-contact-set direct-current contactor does not emit heat, the fire hazards are greatly reduced, and the energy-saving-type multi-contact-set direct-current contactor is suitable for popularization and application in electric cars.

Description

technical field [0001] The invention relates to a DC contactor, in particular to an energy-saving multi-contact DC contactor applied to electric vehicle engines. technical background [0002] In recent years, with the vigorous promotion of DC power equipment such as electric vehicles, especially the development and use of a large number of three-phase DC motors for electric vehicles, the multi-contact group DC contactor products are extremely rare, and can be seen on the market It is nothing more than a single-contact DC electromagnetic contactor. As long as this kind of relay works, the coil must always supply power, which is very uneconomical. At the same time, there is a fire hazard caused by heat, and there is only one contact, which cannot be used in three-phase relays. It is used in permanent magnet motor circuits, which is incompatible with the general trend of promoting energy saving of electric vehicles. Contents of the invention [0003] In order to overcome the...

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Problems solved by technology

[0002] In recent years, with the vigorous promotion of DC power equipment such as electric vehicles, especially the development and use of a large number of three-phase DC motors for electric vehicles, the multi-contact group DC contactor products are extremely rare, and can be seen on the market It is nothing more than a single-contact DC electromagnetic contactor. As long as this kind of relay works, the coil must always supply power, which is very uneconomical. At the same time, there is a fire hazard caused by heat, and there is only one contact, which cannot be used in three-phase relays. It is used in permanent magnet motor circuits, which is incompatible with the general trend of promoting energy saving of electric vehicles

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