PROBLEM TO BE SOLVED: To provide a method for diagnosing demagnetization of a motor of an eco-friendly automobile, which can accurately diagnose an irreversible demagnetization state of a permanent magnet of a drive motor or a HSG (hybrid starter-generator) without additional use of separate hardware, increase in costs, or reduction in efficiency while minimizing influence that irreversible demagnetization of the permanent magnet of the drive motor or the HSG exerts on vehicle performance.SOLUTION: A method for diagnosing irreversible demagnetization of a permanent magnet of a motor for battery charging during an electricity generating operation in an eco-friendly automobile, includes steps of: acquiring operating state information of the motor; determining whether a diagnosis entrance condition including a state in which the motor operates for electricity generation is satisfied, from the acquired operating state information of the motor; when the diagnosis entrance condition is satisfied, acquiring information of a DC current value in diagnosis, which is charged to a battery by the electricity generating operation of the motor, for diagnosis of irreversible demagnetization of the motor; and determining whether irreversible demagnetization occurs, by comparing the acquired information of the DC current value in diagnosis with pre-stored information of a DC current value in a normal state of the permanent magnet.SELECTED DRAWING: Figure 1
【課題】駆動モーターやHSGの永久磁石の不可逆減磁が車両性能に及ぶことができる影響を最小化しながら別のハードウェアの追加使用、コスト増加、又は効率低下なしに駆動モーターやHSGの永久磁石の不可逆減磁状態を正確に診断することができる環境に優しい自動車のモーター減磁診断方法を提供する。【解決手段】環境に優しい自動車において発電作動時にバッテリーが充電されるモーターの永久磁石の不可逆減磁を診断する方法であって、モーターの作動状態情報を取得する段階;取得されたモーターの作動状態情報から、モーターが発電作動している状態を含む診断進入条件を満足するかどうかを判断する段階;診断進入条件を満足するとき、モーターの不可逆減磁の診断のために、モーターの発電作動によってバッテリーに充電される診断時のDC電流値情報を取得する段階;及び取得された診断時のDC電流値情報を予め保存されている永久磁石の正常状態時のDC電流値情報と比較して不可逆減磁の発生有無を判断する段階を含む。【選択図】図1
METHOD FOR DIAGNOSING DEMAGNETIZATION OF MOTOR OF ECO-FRIENDLY AUTOMOBILE
環境に優しい自動車のモーター減磁診断方法
2017-01-12
Patent
Electronic Resource
Japanese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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