To early converge a detection value obtained by each temperature sensor and optimally make a failure diagnosis of the temperature sensor.SOLUTION: A failure diagnostic device for a temperature sensor includes: a pump drive section 402 driving a pump 300 circulating a refrigerant in a refrigerant circuit 310 after stop of a vehicle; and a failure diagnosis section 404 making a failure diagnosis of temperature sensors 110, 120 when a charging execution time of a high-voltage battery 800 generating electric power serving as a driving source of the pump 300 reaches a temperature convergence time of the temperature sensors 110, 120 measuring a temperature of a motor 100 cooled by the refrigerant after the pump 300 is driven.SELECTED DRAWING: Figure 1
【課題】早期に各温度センサの検出値を収束させ、温度センサの故障診断を最適に行う。【解決手段】車両停止後に冷媒回路310に冷媒を循環させるポンプ300を駆動するポンプ駆動部402と、ポンプ300を駆動した後、ポンプ300の駆動源となる電力を発生する高電圧バッテリ800の充電実施時間が、冷媒により冷却されるモータ100の温度を測定する温度センサ110,120の温度収束時間に到達すると、温度センサ110,120の故障診断を実施する故障診断部404と、を備える、温度センサの故障診断装置が提供される。【選択図】図1
FAILURE DIAGNOSTIC DEVICE FOR TEMPERATURE SENSOR AND FAILURE DIAGNOSTIC METHOD FOR TEMPERATURE SENSOR
温度センサの故障診断装置及び温度センサの故障診断方法
2020-10-22
Patent
Electronic Resource
Japanese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 / G01K MEASURING TEMPERATURE , Messen der Temperatur |
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