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Temperature control method for permanent magnet synchronous motor and intelligent power unit system of pure electric vehicle

A permanent magnet synchronous motor, pure electric vehicle technology, applied in the direction of automatic disconnection of emergency protection devices, electric vehicles, motors, etc., can solve the problem of not being able to provide the temperature information of the motor and controller system, and achieve the effect of ensuring safety

Active Publication Date: 2011-11-23
深蓝汽车科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] At present, the existing motor controller system generally only detects the stator temperature of the motor and the temperature of the power module, and cannot provide comprehensive temperature information of the motor and controller system

Method used

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  • Temperature control method for permanent magnet synchronous motor and intelligent power unit system of pure electric vehicle
  • Temperature control method for permanent magnet synchronous motor and intelligent power unit system of pure electric vehicle
  • Temperature control method for permanent magnet synchronous motor and intelligent power unit system of pure electric vehicle

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Embodiment Construction

[0020] A detailed description will be given below in conjunction with the accompanying drawings of the present invention.

[0021] like figure 1 Shown is the temperature protection principle block diagram of the permanent magnet synchronous motor and the controller system. For the motor and controller system, the motor is mainly a permanent magnet synchronous motor, and there are temperature sensors (usually 2) on the stator to detect the temperature of the motor. the stator temperature. There are also temperature sensors in the controller, which are used to collect the temperature of the power module, heat sink, PCB board, and coolant inlet and outlet temperatures. The temperature and voltage signals collected by the sensor are input to the temperature detection circuit, and the measurement error caused by the sensor lead is eliminated through the analog transmission compensation circuit or the voltage adjustment circuit, and finally the I / O requirements suitable for DSP / MCU...

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Abstract

The invention discloses a temperature control method for a permanent magnet synchronous motor and intelligent power unit (IPU) system of a pure electric vehicle. A control chip of an intelligent power unit adopts a digital signal processor (DSP) or a micro control unit (MCU). Each path of input signals acquired by temperature sensors are transmitted to the DSP / MCU after passing through a temperature detection circuit, and the temperature signals are computed and processed to realize functions of performing temperature detection, processing and protection on the motor and IPU system. The method comprises hardware temperature detection and conversion and software protection processing, wherein a hardware method comprises the detection, processing, A / D conversion and the like of the stator temperature of a motor, the power module temperature of the IPU, power module radiator temperature, cooling fluid inlet and outlet temperature and power module printed circuit board (PCB) temperature signals; and a software method comprises software flow processing performed on the temperature signals according to a protocol policy by the DSP / MCU and a hybrid control unit (HCU).

Description

technical field [0001] The invention belongs to the design field of motors and their controllers, and in particular relates to a temperature protection method for a permanent magnet synchronous motor and a controller system for a pure electric vehicle. Background technique [0002] At present, pure electric vehicles are a hot field of research and development, and the application of permanent magnet synchronous motors and controller systems in electric vehicles is also becoming more and more extensive. As a core component of the vehicle powertrain system, the motor controller system must ensure the safety and reliability of its work, so as to ensure the safe, reliable and stable operation of the vehicle power system. In order to make the motor and controller system work normally, it is necessary to detect the temperature of the stator of the permanent magnet synchronous motor and the temperature of the power module, radiator, PCB board, and coolant inlet and outlet of the co...

Claims

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Application Information

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IPC IPC(8): H02H7/00H02H7/08H02H5/04B60L15/00
CPCY02T10/644Y02T10/64
Inventor 滕波肖伟王璐张正兴
Owner 深蓝汽车科技有限公司
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