Title:
METHOD AND APPARATUS FOR OVER-TEMPERATURE PROTECTION ON POWER DEVICE OF ELECTRIC MOTOR CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2023/039808
Kind Code:
A1
Abstract:
Provided are a method and apparatus for over-temperature protection on a power device of an electric motor controller, which relate to the field of automobiles. The method comprises: acquiring the temperature of a power device of an electric motor controller (201); acquiring the temperature of a cooling liquid in a cooling apparatus of the electric motor controller (202); according to the temperature of the power device and the temperature of the cooling liquid, determining a temperature difference between the temperature of the power device and the temperature of the cooling liquid (203); and if the temperature difference meets a preset condition, limiting the output power of the electric motor controller (204). By means of the method, the situation that a power device is overheated and damaged due to the rapid temperature rise can be avoided, such that safe operation of the power device of an electric motor controller can be protected.
Inventors:
LIN LUOBIN (CN)
CAI FEILONG (CN)
PAN XIANXI (CN)
DAN ZHIMIN (CN)
CAI FEILONG (CN)
PAN XIANXI (CN)
DAN ZHIMIN (CN)
Application Number:
PCT/CN2021/118879
Publication Date:
March 23, 2023
Filing Date:
September 16, 2021
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
B60K11/02; G01K13/00
Foreign References:
| JP2006149064A | 2006-06-08 | |||
| US20190178728A1 | 2019-06-13 | |||
| CN103328248A | 2013-09-25 | |||
| CN112092630A | 2020-12-18 | |||
| CN112744087A | 2021-05-04 | |||
| CN104076844A | 2014-10-01 | |||
| CN111552331A | 2020-08-18 |
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