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Electric vehicle drive motor diagnosis device and diagnosis method, and electric vehicle drive motor diagnosis device
Electric vehicle drive motor diagnosis device and diagnosis method, and electric vehicle drive motor diagnosis device
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机译:电动汽车驱动马达诊断装置及诊断方法,电动汽车驱动马达诊断装置
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摘要
A diagnostic apparatus for diagnosing a drive motor of a vehicle includes a start-up abnormality detection section to detect coil temperature, coil resistance or insulation resistance of a motor coil during a non-traveling time in which electric power supply is applied and to determine occurrence of abnormality in the motor coil when the coil temperature is greater than a threshold value or the coil resistance or insulation resistance is greater than a threshold value, and a travel abnormality detection section to detect coil temperature, rotation number of the motor, a motor applied voltage and a motor current during traveling of the vehicle and to determine occurrence of abnormality in the motor coil when the coil temperature is greater than a threshold value or the relation between the motor applied voltage and the motor current relative to the rotation number fails to fall within a predetermined range.
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