Simplification and Application Research of Energy Efficiency Evaluation Indicators for New Energy Vehicle Motors

AUTO ELECTRIC PARTS ›› 2026, Vol. 1 ›› Issue (3) : 14-16.

New Energy

Wu Dingyin, Hua Lei, Ma Fangping, Liu Ning

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Abstract

Aiming at the problems of complexity and high cost in the current energy efficiency evaluation methods for new energy vehicle drive motors, this study proposes a simplified evaluation framework. Based on "China Automotive Energy Efficiency Classification Test and Evaluation Procedure Part 1: Battery Electric Passenger Cars", the number of test points is reduced by about 30% by optimizing the selection rules of speed-torque points, and a linear interpolation algorithm is introduced to supplement efficiency data. A case study on a battery electric passenger car motor shows that the deviation of the high-efficiency area ratio calculated by the simplified method from the standard method is less than 5%, while the testing efficiency is improved by about 40%. This method provides an effective tool for rapid motor energy efficiency assessment and product optimization, which is in line with industry development needs.

Key words

new energy vehicle / motor energy efficiency / evaluation indicators / simplification method / high-efficiency area ratio

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Wu Dingyin, Hua Lei, Ma Fangping, Liu Ning.

Simplification and Application Research of Energy Efficiency Evaluation Indicators for New Energy Vehicle Motors

[J]. AUTO ELECTRIC PARTS. 2026, 1(3): 14-16

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