An emt-based durability test method for in-wheel motor assemblies
A technology of in-wheel motor and test method, which is applied in the direction of machine gear/transmission mechanism testing, etc., can solve the problems such as the durability of the in-wheel motor assembly that is not formulated
Inactive Publication Date: 2016-03-09
浙江安伦汽车科技有限公司
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[0004] The durability of the hub motor assembly is one of the important indicators for evaluating the use of hub motors in electric vehicles, and there is no standard related to the durability of the hub motor assembly
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[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only for explaining the present invention, and are not intended to limit the present invention.
[0057] figure 1 It is a schematic structural diagram of a test system according to an embodiment of the present invention. EMT1 is connected to hub motor assembly 3 through coupling 12, and torque sensor 2 is located at the output shaft end of EMT1; power battery 5 provides motor controller 4 and hub motor controller 6 with DC high-voltage power, the motor controller 4 inverts the DC high-voltage power into three-phase AC power to provide power for the drive motor in EMT1, and controls the drive motor in EMT1 at the same time, and the hub motor controller 6 inverts the DC high-volta...
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The invention provides a hub motor assembly durability evaluation method based on an EMT. The method comprises the steps that the output shaft end of the EMT is connected with the input end of a hub motor assembly, and the output rotating speed and torque of the EMT and the output rotating speed and torque of the hub motor assembly are coupled together; the EMT is shifted into a corresponding needed gear, the range of the rotating speed and the maximum torque, needing to be output, of the EMT are calculated according to the rotating speed range and the maximum torque of the hub motor assembly, and the gear of the EMT is selected; a running-in test is carried out on the hub motor assembly, when the running-in test is finished, shut-down maintenance is carried out if the hub motor assembly breaks down, and then the running-in test continues; a durability test is carried out on the hub motor assembly, shutdown is carried out until the hub motor assembly breaks down, the fault reason is found, and corresponding parameters are recorded; according to the fault reason and the corresponding parameters recorded in the S4, the durability of the hub motor assembly is evaluated. According to the method, durability evaluation of the hub motor assembly is achieved, and the blank of the field is filled in.
Description
technical field [0001] The invention relates to the field of electric vehicle test bench testing, in particular to an EMT-based durability testing method for hub motor assemblies. Background technique [0002] In-wheel motor independent drive vehicle is one of the main directions for the development of electric vehicles in the future. It has the characteristics of flexible operation, good controllability, and good power, and can adapt to various complex road surfaces and realize various complex operations. The hub motor assembly refers to the integration of the drive motor and the reduction mechanism with the wheel, including the corresponding hub motor controller, which makes the layout of the vehicle more flexible and compact. However, the hub motor is still in the stage of research and development and trial production, and there is a lack of corresponding standards. and test benches. [0003] CN200910061844.6 discloses an electric-driven automatic transmission (EMT), whi...
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IPC IPC(8): G01M13/02
Inventor 吴森黄斌龙成冰付翔刘帅王红雷王玉刚褚少威
Owner 浙江安伦汽车科技有限公司