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Analysis of Passive Low Power Phase Change Heat Dissipation Method for Electric Vehicle Motor
Technical Paper
2019-01-1256
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The electric vehicle motor is developing toward high power density, at the same time brings serious temperature rise problem, which affect the driving motor performance, efficiency, and useful life. Liquid cooling is usually used to solve the problem, but its energy consumption is large and the reliability is poor. In order to solve this problem, this paper proposes a heat dissipation method to improve the reliability and energy efficiency of the driving motor heat dissipation system. The method uses heat pipes heat transfer, and the heat pipes cold end are cooled by vehicle facing the wind. By establishing the motor temperature rise model, heat transfer model and vehicle dynamics model, this paper analyzes the maximum temperature region and reliability of the driving motor heat dissipation system, calculates and analyzes the efficiency of the driving motor under different driving conditions. The results show that with the heat dissipation method of this paper, the reliability of the driving motor cooling system has been improved; the overall efficiency of the driving motor can be increased by 7.4%-27.9% and 2.4%-23.9% on horizontal roads and climbs. The driving motor heat dissipation method can provide some new thoughts for the development, reliability and heat dissipation of high power density motors.
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Huang, S., Tan, G., Wang, Y., Kuang, J. et al., "Analysis of Passive Low Power Phase Change Heat Dissipation Method for Electric Vehicle Motor," SAE Technical Paper 2019-01-1256, 2019, https://doi.org/10.4271/2019-01-1256.Data Sets - Support Documents
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