Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Temperature detection and analysis method of vehicular motor controller

A technology of motor controller and diagnostic method, which is applied in the direction of thermometers, thermometers, and electrical devices that use directly heat-sensitive electric/magnetic components, and can solve the problems of low maintenance-free and poor system reliability, and achieve maintenance-free High reliability, guaranteed reliability, high reliability effect

Active Publication Date: 2014-06-11
奇瑞新能源汽车股份有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional temperature detection and diagnosis are relatively simple, resulting in poor system reliability and low maintenance-free performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Temperature detection and analysis method of vehicular motor controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 As shown, in the temperature detection and diagnosis method of the vehicle motor controller in this embodiment, the motor control system uses three temperature sensors (thermistors) to collect the temperature of the drive module, and the motor control system collects the temperature collected by the three temperature sensors. Average the temperature data of the temperature data, and remove the data of the temperature sensor with the largest difference between the temperature data and the average value, and then average the temperature data of the retained temperature sensor to obtain the actual temperature T0 of the drive module;

[0017] The motor control system sets thresholds T1 and T2, where T1

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention aims to provide a temperature detection and analysis method of a vehicular motor controller with high reliability, so that the measured MCU (microprogrammed control unit) temperature can be close to a real value to the maximal extent, and the MCU is protected according to temperature data, so as to reduce maintenance frequency of the system. In the temperature detection and analysis method of the vehicular motor controller, a motor control system utilizes at least two temperature sensors to collect temperature of a drive module, arranges all temperature data collected by the temperature sensor, eliminates the data with the maximal deviation, and finally controls the output power of the drive module according to the preserved temperature data. Temperature misjudgment due to the fact that one temperature sensor cannot normally work or the measurement deviation is large can be avoided through the temperature sensor with redundancy design, so that the reliability of collection of the MCU temperature data can be ensured, and the measured temperature data can be close to the real value to the maximal extent.

Description

technical field [0001] The invention relates to a temperature detection and diagnosis method of a motor controller (MCU) of a pure electric car. Background technique [0002] Now people have begun to pay more and more attention to the protection of the environment and the effective and rational use of energy. Therefore, pure electric vehicles with high efficiency, energy saving and environmental protection have become one of the development trends of the automobile industry. The electric drive system of pure electric vehicles can achieve the purpose of low energy consumption and zero emission, and has great market prospects. Due to the limitation of installation space, pure electric vehicles have strict requirements on the size of the motor drive system. Therefore, sine wave permanent magnet synchronous motors are generally used in the drive system of pure electric vehicles. The drive module of the MCU uses IGBT drive motors, which have reliable operation. , Small size, li...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/22
Inventor 陈立冲罗晓王瑛
Owner 奇瑞新能源汽车股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com