Electric vehicle and motor over-temperature protection method and system thereof

An over-temperature protection, motor controller technology, applied in the field of vehicle engineering, can solve problems such as vehicle jitter

Active Publication Date: 2016-12-07
深蓝汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a motor over-temperature protection

Method used

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  • Electric vehicle and motor over-temperature protection method and system thereof
  • Electric vehicle and motor over-temperature protection method and system thereof
  • Electric vehicle and motor over-temperature protection method and system thereof

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Embodiment Construction

[0035] The core of the present invention is to provide a motor over-temperature protection method, which can prevent the motor from overheating and reduce the vibration of the vehicle during driving; another core of the present invention is to provide a motor over-temperature protection method system; in addition, another core of the present invention is to provide an electric vehicle including the above-mentioned motor over-temperature protection system.

[0036] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Please refer to Figure 1 to Figure 3 , figure 1 It is a flow chart of the motor over-temperature protection method provided by the embodiment of the present invention. figure 2 It is a flow chart of an implementation mode of the motor over-temperature protection method...

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Abstract

The invention discloses a motor over-temperature protection method. The motor over-temperature protection method comprises the following steps that S1, the current temperature value of a motor is obtained; S2, whether the current temperature value is within the preset temperature range is judged, and if ye, the step S3 is conducted; S3, whether the current temperature value is the same as the previous temperature value of the motor is judged, and if not, the step S4 is conducted; and S4, current maximum available power of the motor is adjusted at the preset changing gradient rate. The invention further discloses a motor over-temperature protection system. In addition, the invention further discloses an electric vehicle comprising the motor over-temperature protection system. According to the motor over-temperature protection method, the change of the maximum available power of the motor can also be stabilized while over temperature of the motor is prevented, and the problem of shaking of the vehicle in the driving process is solved.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a motor over-temperature protection method. In addition, the invention also relates to a motor over-temperature protection system. In addition, the present invention also relates to an electric vehicle with the motor over-temperature protection system. Background technique [0002] As energy issues become increasingly prominent, electric vehicles are increasingly becoming popular products for the masses. When the motor works in the low-speed, high-torque area and high-speed area, the heat generated by the motor is relatively large, and the temperature of the motor rises a lot. At this time, power limitation should be performed to reduce the heat generation of the motor and avoid motor demagnetization caused by excessive motor temperature. . [0003] When the temperature of the electric vehicle motor is too high, the over-temperature protection strategy adopted is t...

Claims

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Application Information

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IPC IPC(8): B60L3/00B60L15/20H02P29/00H02H7/085
CPCH02H7/0852H02P29/00B60L3/0061B60L15/20Y02T10/64Y02T10/72
Inventor 韩亚南李玲玲张金明郭伟腾才立忠
Owner 深蓝汽车科技有限公司
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