Conductive slip ring based on gallium-based liquid metal

Abstract

The invention relates to a conductive slip ring based on gallium-based liquid metal. The conductive slip ring comprises the gallium-based liquid metal, an electrolyte solution, a stator, a rotor, a stator electrode, a rotor electrode and a ball bearing; the stator electrode and the rotor electrode are respectively arranged on the stator and the rotor; the rotor is mounted on the stator through theball bearing; the rotor and the stator can rotate relatively; a certain gap is formed between the stator electrode and the rotor electrode and is filled with the gallium-based liquid metal and the electrolyte solution; and the gallium-based liquid metal can be adhered to the surfaces of the stator electrode and the rotor electrode after the surfaces of the stator electrode and the rotor electrodeare electrowetted with the gallium-based liquid metal. When the stator and the rotor relatively rotate, the gallium-based liquid metal between the stator electrode and the rotor electrode slides, sothat circuit connection between the rotor and the stator is realized; and meanwhile, the gallium-based liquid metal has fluid characteristics, so that rotation between the rotor and the stator only has extremely low viscous resistance, and the motor has the characteristics of reliable electric conduction, simple structure and small rotation resistance.

Description

technical field [0001] The invention belongs to the field of electromechanical technology, and relates to a conductive slip ring device, specifically a conductive slip ring based on gallium-based liquid metal, which can realize reliable contact between fixed parts and rolling or sliding parts under the condition of extremely small friction. Signal and energy transfer devices. Background technique [0002] In electromechanical equipment, especially motors, there are many requirements for transmitting energy and signals between moving parts and stationary parts. Especially when the mechanical equipment is doing rotary motion, the mechanical equipment also needs multiple motions. For example, there is another motor on the rotary equipment that needs to keep running. These multiple motions require energy or control signals. At this time, it is necessary to use the rotary communication device. An external power supply or signal source is used to ensure multiple motions on rotary...

AI Technical Summary

Problems solved by technology

The common sliding contact slip ring needs to rely on the principle of elastic overlapping to complete the circuit connection between the stator and the rotor. Excessive elastic force will cause serious sliding friction, which not only increases the rotation resistance of the slip ring, but also greatly reduces the service life of the slip ring. ; If the elastic force is too small, it will lead to poor contact and affect the conductivity of the slip ring

Another type of mercury slip ring with mercury as the fluid medium has the characteristics of long life and low resistance. However, because mercury is toxic to the human body and is easy to volatilize, this requires a complicated sealing structure for mercury slip rings, which limits the use of mercury slip rings. Prospect of use

Images