Current transmission device for motor, motor with current transmission device and vehicle

Abstract

According to the present invention, there is provided a current transmission device for a motor, the device including: a rotating bearing member fixed in a rotor shaft and rotating therewith, and a non-rotating member. The rotary bearing member includes: a first compartment filled with a conductive fluid, having a first opening, and a rotor anode connector in electrical contact with the conductivefluid therein and electrically connected to a rotor positive electrode; and a second compartment filled with a conductive fluid and insulated from the first compartment, having a second opening, anda rotor negative electrode connector in electrical contact with the conductive fluid therein and electrically connected to the rotor negative electrode. The non-rotating member closes the first and second openings and includes: a power supply positive electrode connecting piece extending into the first compartment and in electrical contact with the conductive fluid therein; and a power supply negative electrode connecting piece extending into the second compartment and in electric contact with the conductive fluid in the second compartment. Compared with an existing conductive fluid transmission structure, the device is integrated in the rotor shaft, is more compact and reliable, and is prevented from being affected by the outside to the maximum extent.

Description

technical field [0001] The present invention generally relates to the field of electric technology, and in particular, relates to a current transmission device for a motor, a motor and a vehicle with the device. Background technique [0002] Current motors generally include two parts, a rotor and a stator, as an energy conversion device for converting electrical energy into mechanical energy and converting mechanical energy into electrical energy. In some motor structures, it is necessary to transmit DC power through the power supply to the rotor winding of the motor rotor or in the opposite direction to generate an electric field, which in turn can make the rotor rotate with the rotating magnetic field of the motor stator. [0003] The process of transmitting direct current from the power supply to the rotor winding of the motor rotor or in the reverse direction involves the current transmission between moving parts. At present, the main technical solutions used in this fie...

AI Technical Summary

Problems solved by technology

In this structure, the rotating good conductor device, the stationary good conductor device and the good conductor liquid are all arranged outside the generator shaft, and the overall structure is large and susceptible to external influences

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