Power matching method applicable to electric vehicle

A power matching, pure electric vehicle technology, applied in electric vehicles, control drive, power management and other directions

Active Publication Date: 2014-02-12
天津天海轮毂电机科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the shortcomings of existing pure electric vehicle power matching methods, and to provide a power system suitable for pure electric vehicles that is aimed at various drive arrangements and meets the power performance requirements such as maximum vehicle speed, maximum gradient and acceleration time. matching method,

Method used

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  • Power matching method applicable to electric vehicle
  • Power matching method applicable to electric vehicle
  • Power matching method applicable to electric vehicle

Examples

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Embodiment

[0112] 1) Determine the number of motors N m : This embodiment selects the layout scheme of the power system independently driven by the rear two wheel hub motors, therefore, determine the number of motors N m for 2.

[0113] 2) List of main parameters: The list of main parameters is shown in Table 2, including vehicle parameters, motor parameters and battery parameters, among which vehicle parameters include vehicle full load weight, vehicle length, width and height, tire specifications, air resistance coefficient, transmission system Total efficiency, maximum vehicle speed, economical vehicle speed, maximum gradeability, maximum gradeability speed, acceleration time from 0-50km / h, acceleration time from 50-80km / h, driving range, conversion factor of rotating mass and acceleration of gravity; motor parameters include motor Type, motor efficiency, motor controller efficiency, rated operating voltage, minimum operating voltage and overload coefficient; battery parameters inclu...

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Abstract

The invention discloses a power matching method applicable to a blade electric vehicle. The method comprises the steps as follows: firstly, the quantity of motors is determined according to a driving manner adopted by the vehicle type; then main parameters such as whole vehicle parameters, motor parameters and battery parameters are listed; initial power matching is performed according to the parameters in a list; and then the quantity of battery modules is determined according to an initial matching result, the transmission ratio of a transmission is determined later, and the power matching of the blade electric vehicle is completed. According to the power matching method, rapid and more accurate power matching can be performed aiming at blade electric vehicles with different vehicle type requirements and different power performance requirements, the matching time can be reduced, the matching expenses are saved, and the whole vehicle development period is shortened.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a power matching method suitable for pure electric vehicles. Background technique [0002] At present, there are various layout schemes and different power matching methods of the existing pure electric vehicle drive system, but the essence can be attributed to the selection of motor parameters, battery parameters and transmission ratio of the drive train. The parameter design of the pure electric vehicle power system, that is, the motor parameters, battery parameters, transmission ratio design of the drive train and their reasonable matching, have a significant impact on the power performance and driving range of pure electric vehicles. Based on vehicle dynamics, motor mechanical characteristics, and battery characteristics, a comprehensive and scientific matching method for the power system of pure electric vehicles is proposed, which not only helps to reduce the existing techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L15/38
CPCY02T10/72
Inventor 朱绍鹏邱斌斌吴志军张华马浩军徐秋月
Owner 天津天海轮毂电机科技有限公司
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