Motor cooling fan optimization control method, device, equipment and storage medium

By acquiring motor and ambient temperature information and adjusting the cooling fan duty cycle using a temperature duty cycle mapping table, the problem of the cooling fan of electric vehicle drive motor being unable to adaptively optimize was solved, achieving the lowest energy consumption cooling control.

CN122402209APending Publication Date: 2026-07-17DONGFENG MOTOR CO LTD DONGFENG NISSAN PASSENGER VEHICLE CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGFENG MOTOR CO LTD DONGFENG NISSAN PASSENGER VEHICLE CO
Filing Date
2026-05-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, the cooling fan of the electric vehicle drive motor cannot automatically find and maintain the lowest energy consumption operating strategy according to different temperature conditions and system status changes, resulting in energy waste or insufficient heat dissipation effect.

Method used

By acquiring motor temperature and ambient temperature information, and using a temperature duty cycle mapping table to dynamically adjust the duty cycle of the cooling fan, adaptive optimization control is achieved.

Benefits of technology

It achieves the automatic search and maintenance of the lowest total fan power consumption based on different temperature conditions and system status changes, thereby improving heat dissipation efficiency and energy management.

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Abstract

本发明属于电动车辆动力装置的控制技术领域,公开了一种电机散热风扇优化控制方法、装置、设备及存储介质。该方法包括获取车辆的电机温度信息以及电机环境温度信息;根据电机温度信息以及电机环境温度信息查询温度占空比映射表确定目标占空比,所述温度占空比映射表是根据散热风扇功耗信息更新后得到的;根据所述目标占空比调整散热风扇的占空比,完成散热控制。需要说明的是,本方案通过结合车辆的电机温度信息以及电机环境温度信息,进行散热风扇占空比的查询,动态选择最优的散热风扇占空比,完成散热控制,实现了根据不同温度工况和系统状态变化,自动寻找并维持使风扇后运行总电耗最低的运行策略。
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