Motor and vehicle

A conductive bearing and conductive connection technology, applied in the field of motors and vehicles, can solve the problems of shaft current breakdown of bearing oil film, damage to bearing structure, arc scars of components, etc., to avoid unstable connection, reduce external force, and improve service life. Effect

CN114221481AActive Publication Date: 2022-03-22VIRIDI E MOBILITY TECH NINGBO CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-03-22

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Abstract

The invention discloses a motor and a vehicle, and the motor comprises a housing which comprises a housing end part; the rotor assembly comprises a rotating shaft, the rotating shaft comprises a rotating shaft end part, and the rotating shaft is rotationally arranged on the shell through a main bearing; the conductive bearing is arranged at the end part of the rotating shaft, the conductive bearing is at least partially sleeved in a conductive bearing sleeve, and the bearing sleeve is provided with a conductive connecting part; and the conductive piece comprises a first connecting part, a second connecting part and an elastic part, one end of the elastic part is connected with the first connecting part, the other end of the elastic part is connected with the second connecting part, the first connecting part is connected with the conductive connecting part, and the second connecting part is connected with the end part of the shell. The rotating shaft and the motor shell are connected through the conductive bearing, the bearing sleeve and the conductive piece, charges on the rotating shaft are conducted away in time, the situation that shaft current is generated between the inner ring and the outer ring of the motor main bearing to damage the main bearing structure is avoided, and the service life of the main bearing is prolonged.
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Description

technical field

[0001] The invention relates to the technical field of drive motors, in particular to a motor and a vehicle. Background technique

[0002] The motor is a common electric drive system. During the operation of the motor, due to factors such as motor magnetic imbalance, charges are accumulated on the motor rotor, resulting in shaft voltage between the inner ring and the outer ring of the motor bearing. As the charge on the motor rotor gradually accumulates, the shaft voltage between the inner ring and the outer ring gradually increases. When the shaft voltage increases to a certain value, shaft current will be generated to break down the bearing oil film, destroy the bearing structure, and cause bearing grooves. Arc scars appear on the road and other components, which greatly reduces the life of the bearing. Therefore, shaft current needs to be avoided to ensure the life of the motor bearings. Contents of the invention

[0003] In view of the above-mentioned...

Examples

Embodiment 1

[0037] The invention provides a motor, such as figure 1 As shown in -8, the motor includes a housing 1, a stator assembly 3 and a rotor assembly 2.

[0038] The stator assembly 3 is fixed on the housing 1 . The stator assembly 3 includes stator windings, through which a rotating magnetic field is generated.

[0039] The rotor assembly 2 includes a rotating shaft 21 , and the rotating shaft 21 includes an end portion of the rotating shaft. The rotating shaft 21 is rotatably mounted on the housing 1 through a main bearing 22 .

[0040] Optionally, the rotor assembly 2 also includes rotor windings. When the motor is running, the rotor assembly 2 is located in the magnetic field generated by the stator windings. The assembly 3 generates torque, thereby causing the rotating shaft 21 to rotate around its axis and output driving torque; or, the rotor assembly 2 also includes an iron core and magnetic steel. When the motor is running, three-phase current is passed into the stator wi...

Embodiment 2

[0071] The present invention also provides a vehicle, which includes the motor described in the above technical solution.