Temperature sensor fault detection method and device and electric vehicle controller

• Main Authors: XU WEISHENG, XIE HONGDONG, LIANG SHENGGANG
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2021
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The embodiment of the invention discloses a temperature sensor fault detection method, a temperature sensor fault detection device and an electric vehicle controller. The temperature sensor fault detection method comprises the steps of acquiring reference temperature rise information of electronic equipment under preset power, wherein the reference temperature rise information comprises the change relation of temperature along with time; controlling the electronic equipment to run for a preset duration at the constant preset power; acquiring actual temperature rise information of the electronic equipment within the preset duration; and based on a comparison result of the actual temperature rise information and the reference temperature rise information, judging whether the temperature sensor has a fault or not. According to the embodiment, under the condition that hardware equipment is not added, fault detection is carried out on the temperature sensor in a motor or a motor controller through a software algor