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A method, device and testing equipment for determining the performance of a motor system

A system performance and determination method technology, applied in the direction of motor generator testing, etc., can solve problems such as the inability to intuitively evaluate the energy consumption index requirements of the motor system, and achieve the effect of improving production test efficiency and simplifying the production test process

Active Publication Date: 2020-08-11
BEIJING ELECTRIC VEHICLE
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AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method, device and testing equipment for determining the performance of the motor system to solve the problem in the prior art that it is impossible to intuitively evaluate whether the performance of the motor system meets the requirements of the vehicle energy consumption index

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  • A method, device and testing equipment for determining the performance of a motor system
  • A method, device and testing equipment for determining the performance of a motor system
  • A method, device and testing equipment for determining the performance of a motor system

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Embodiment Construction

[0051] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0052] Such as figure 1 As shown, the embodiment of the present invention provides a method for determining the performance of a motor system, including:

[0053] Step 11: Obtain the torque-speed curve of the vehicle under NEDC and the efficiency distribution map of the motor system.

[0054] Among them, the efficiency distribution map of the motor system is a data curve generated during the motor test, which mainly reflects the distribution of ...

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Abstract

The invention discloses a method and a device for determining the performance of a motor system as well as testing equipment. The method comprises the following steps: acquiring a torque-speed curve of a whole vehicle under a NEDC (New European Driving Cycle) and an efficiency distribution diagram of the motor system; calculating the average efficiency value of the motor system under the NEDC according to the torque-speed curve of the whole vehicle under the NEDC and the efficiency distribution diagram of the motor system, a first probability value at which the efficiency value is greater thanor equal to a first threshold and a second probability value at which the efficiency value is greater than or equal to a second threshold; and determining the comprehensive evaluation index of the motor system according to the average efficiency value, the first probability value and the second probability value in order to determine the performance of the motor system under the NEDC. Through adoption of the method and the device, whether the performance of the motor system satisfies the requirement of the energy consumption index of the whole vehicle in an automobile production test can be evaluated; the evaluation of the motor system after the whole vehicle runs under the NEDC is avoided; the production test process is simplified; and the efficiency of the production test is improved.

Description

technical field [0001] The invention relates to the technical field of production testing, in particular to a method, device and testing equipment for determining the performance of a motor system. Background technique [0002] With the continuous increase of car ownership, people have higher and higher requirements for the performance of the vehicle. Among them, the performance of the motor system plays a key role in the performance of the vehicle. Generally, when evaluating whether the performance of the motor system meets the performance requirements of the whole vehicle, an important index used is the efficiency distribution map of the motor system, that is, the efficiency distribution of the motor system is required to be distributed in different torque and speed ranges, satisfying a certain The ratio requirements to ensure that the motor system meets the performance requirements. Although the efficiency distribution diagram of the motor system can evaluate the perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/34
CPCG01R31/34
Inventor 钟彬高洋刘玉辉
Owner BEIJING ELECTRIC VEHICLE
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