A motor rotor structure and permanent magnet synchronous motor
A technology for permanent magnet synchronous motors and motor rotors, applied in the direction of synchronous motors with stationary armatures and rotating magnets, structural connections, magnetic circuits, etc., can solve problems such as loss and achieve the effect of avoiding loss
Active Publication Date: 2022-03-11
CHERY AUTOMOBILE CO LTD
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Problems solved by technology
[0005] For the rotor in the driven state (that is, not working, but following the rotation), it will generate a certain amount of loss when it rotates, and in the case of its high speed, it needs to input additional weakening current to suppress, which will cause greater loss
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[0039] In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0040] On the one hand, an embodiment of the present invention provides a motor rotor structure, which is used in a permanent magnet synchronous motor, as shown in the attached figure 1 And attached figure 2 As shown, the motor rotor structure includes: an output shaft 1, a first rotor core 2 with permanent magnets, a second rotor core 3 with permanent magnets, a sleeve shaft 4, a synchronizer 5, and a synchronizer control member.
[0041] Wherein, along the direction from the output end to the non-output end, the output shaft 1 includes a first installation section, a second installation section and a third installation section connected in sequence;
[0042] The first rotor core 2 with permanent magnets is set on the first installation section of t...
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The invention discloses a motor rotor structure and a permanent magnet synchronous motor, belonging to the field of motor equipment. The motor rotor structure is used for a permanent magnet synchronous motor, including: an output shaft, a first rotor core with permanent magnets, a second rotor core with permanent magnets, a sleeve shaft, a synchronizer, and a synchronizer control part. Along the direction from the output end to the non-output end, the output shaft includes the first installation section, the second installation section and the third installation section connected in sequence; the first rotor core is sleeved on the first installation section of the output shaft; the synchronizer can It is arranged on the second installation section of the output shaft to move; the second rotor core is sleeved on the sleeve shaft, and the sleeve shaft is rotatably sleeved on the third installation section of the output shaft; the sleeve shaft and the synchronizer pass through the opposite end Adaptive plug. The rotor structure of the motor disconnects the connection of the rotor under low torque conditions and connects the rotor connection under high torque conditions, which not only achieves the purpose of a multi-motor system, but also avoids additional loss.
Description
technical field [0001] The invention relates to the field of motor equipment, in particular to a motor rotor structure and a permanent magnet synchronous motor. Background technique [0002] With the gradual popularization of new energy vehicles, the performance and efficiency requirements of its power system continue to increase. Permanent magnet synchronous motors are widely used in new energy vehicles due to their advantages of high power density and high operating efficiency. Since the efficiency of the motors is different under different working conditions, the multi-motor system can make the motors in the system work in the high-efficiency zone by allocating the output performance of each motor according to the requirements of the working conditions and the characteristics of the motors, so as to improve the electric drive efficiency. system efficiency. [0003] At present, in order to reduce the volume of the multi-motor system, the electromagnetic parts of the perm...
Claims
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IPC IPC(8): H02K1/2706H02K16/00H02K7/00H02K7/10H02K11/21H02K21/14
CPCH02K1/2706H02K16/00H02K7/003H02K7/10H02K11/21H02K21/14
Inventor 孙琪张希所
Owner CHERY AUTOMOBILE CO LTD