Over-temperature protection system and over-temperature protection method for driving motor and controller of electric vehicle

A technology for driving motors and electric vehicles, applied in motor control, control systems, emergency protection circuit devices, etc., can solve problems such as easy over-temperature damage, heavy loads of drive motors and controllers, etc., to prevent over-temperature damage and reduce temperature Effect

Pending Publication Date: 2018-11-30
SHANDONG MEILADE ENERGY & POWER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the existing electric vehicles are used in the southwestern hilly area, the drive motor and controller are heavily loaded, which is easy to be damaged by overheating

Method used

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  • Over-temperature protection system and over-temperature protection method for driving motor and controller of electric vehicle
  • Over-temperature protection system and over-temperature protection method for driving motor and controller of electric vehicle
  • Over-temperature protection system and over-temperature protection method for driving motor and controller of electric vehicle

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0027] Such as Figure 1 to Figure 3 As shown, the electric vehicle drive motor and controller overtemperature protection system of the present invention includes a drive motor 6, an MCU controller 1 and an electronic throttle 2, and the MCU is a micro control unit (Microcontroller Unit; MCU), also known as a single-chip microcomputer (Single Chip Microcomputer) or microcontroller. According to the instructions of the ...

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Abstract

The invention discloses an over-temperature protection system and an over-temperature protection method for a driving motor and a controller of an electric vehicle, wherein the over-temperature protection system for the driving motor and the controller of the electric vehicle comprises the driving motor, an MCU controller and an electronic throttle, wherein a control unit and an inverter circuit unit are arranged in the MCU controller, the inverter circuit unit comprises an inverter bridge composed of MOS tubes, the electronic throttle is electrically connected with the signal output end of the MCU controller, temperature sensors are respectively arranged on a stator coil of the driving motor, a heat dissipation bottom plate of the MCU controller and the MOS tubes of the inverter circuit in the MCU controller, and the temperature sensors are electrically connected to the signal input end of the MCU controller. Under the premise of a fixed heat dissipation condition, the temperature sensor is used to collect and feedback the temperature to realize a control strategy of the output current. The driving motor is controlled to be automatically adjusted within a certain temperature threshold to enter a relative thermal equilibrium state.

Description

technical field [0001] The invention relates to the technical field of electric vehicle control, in particular to an electric vehicle drive motor and controller over-temperature protection system and over-temperature protection method. Background technique [0002] With the development of electric vehicle technology, it has been recognized by more and more consumers. The power of electric vehicles is also increasingly limited by the region. The topography and landforms in Southwest my country are a big test for the drive of electric vehicles. When the existing electric vehicles are used in the southwestern hilly areas, the drive motor and the controller are heavily loaded, and are easily damaged by overheating. Contents of the invention [0003] The first technical problem to be solved by the present invention is to provide an electric vehicle drive motor and controller over-temperature protection system that controls the drive motor to automatically adjust within a cert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P29/60H02P29/64H02P29/68H02H7/08H02H7/085
CPCH02H7/0833H02H7/0852H02P29/60H02P29/64H02P29/68
Inventor 周敏李继民常风华
Owner SHANDONG MEILADE ENERGY & POWER TECH
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