Motor axial electromagnetic disturbance eliminating device for electric driving system of new energy automobile
An electric drive system, new energy vehicle technology, applied in the direction of electromechanical devices, measuring devices, electric components, etc., can solve the problem of electromagnetic disturbance of the motor shaft, which cannot be eliminated, and achieve safe electromagnetic disturbance, elimination of electromagnetic disturbance, and true electromagnetic compatibility. Effect
Pending Publication Date: 2019-08-13
CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
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Problems solved by technology
[0004] In view of this, the present invention aims to propose a new energy vehicle electric drive system motor axial electromagnetic disturbance elimination device to solve the existing problem of electromagnetic disturbance on the motor shaft of new energy vehicles that cannot be eliminated
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Embodiment 1
[0037] The mounting plate of the motor to be tested is fixed on the fixed frame 13 by bolts, as image 3 As shown, the fixed frame 13 can be a double-layer vertical steel plate fixed at the bottom. The vertical steel plate is provided with a through hole corresponding to the motor shaft. The front connecting shaft 1 is mated and inserted through the internal spline 11, the connecting base 2 is fixed on the vertical steel plate by bolts, and the rear connecting shaft 10 of the elimination device is fixedly connected with the rotating shaft of the dynamometer through a coupling, and the dynamometer can The motor to be tested is tested, and the electromagnetic disturbance on the motor shaft is eliminated by the elimination device, and the measurement result is more accurate.
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The invention provides a motor axial electromagnetic disturbance eliminating device for an electric driving system of a new energy automobile, and the device comprises a front connecting shaft and a rear connecting shaft, wherein one end of the front connecting shaft is connected with a motor shaft ,and the other end of the front connecting shaft is provided with a first connecting disc; one end of the rear connecting shaft is connected with test equipment, and the other end of the rear connecting shaft is provided with a second connecting disc. A corresponding bolt hole is formed between thefirst connecting disc and the second connecting disc, and the first connecting disc and the second connecting disc are connected through a fixing bolt, wherein the fixing bolt is correspondingly provided with an insulating sheath, and the insulating sheath is arranged on the outer side of the fixing bolt and only arranged in the bolt hole. An insulating pad is arranged between the first connectingdisc and the second connecting disc and is used for isolating the first connecting disc from the second connecting disc. The device provided by the invention can safely eliminate the electromagneticdisturbance generated by the axial direction of the motor under the condition that the stable operation of the motor is ensured.
Description
technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to a device for eliminating axial electromagnetic disturbance of a motor in an electric drive system of a new energy vehicle. Background technique [0002] The electric drive power system is the core electrical system of electric vehicles. Since the system contains high-power power electronic devices, it is also the main source of electromagnetic radiation disturbance, which often causes the electromagnetic compatibility test of the whole vehicle to exceed the national regulatory limit requirements. [0003] At present, in the electromagnetic compatibility test of the electric drive system of new energy vehicles, the electromagnetic disturbance emitted by the wire or the body of the controller is mainly aimed at, but it is found during the test that the motor shaft is also an important source of disturbance. The main reason is that there is a high-frequency com...
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IPC IPC(8): H02K11/028G01R31/00
CPCG01R31/001H02K11/028
Inventor 侯帅郭建东王传琪柳海明吴在园陈希琛王云陈磊
Owner CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
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