Temperature control method and device of electric car drive motor and electric car

A temperature control method and technology of a temperature control device, which are applied to electric vehicles, electric devices, control driving, etc., can solve problems such as affecting the driver's driving experience, prevent further temperature rise, ensure driving experience, and reduce restrictions. Effect

Active Publication Date: 2018-01-19
BEIJING ELECTRIC VEHICLE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a temperature control method and device for an electric vehicle drive motor and an electric vehicle, so as to solve the problem in the prior art that the driving experience of the driver is affected when controlling the temperature of the drive motor

Method used

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  • Temperature control method and device of electric car drive motor and electric car
  • Temperature control method and device of electric car drive motor and electric car
  • Temperature control method and device of electric car drive motor and electric car

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Embodiment Construction

[0064] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0065] Such as figure 1 Shown is a flowchart of a temperature control method for a drive motor of an electric vehicle according to an embodiment of the present invention. Before specifically describing the implementation process of the method, it should be noted that the temperature control method of the electric vehicle drive motor provided by the present invention is suitable for figure 2 A pure electric vehicle with the control system architecture shown.

[0066] Here, such as figure 2 As shown, the control system architecture includes: accelerator pedal system, brake pedal system, gear system, vehicle control unit (VCU), battery management system (Battery Management System, BMS), motor controller ( Moter Control Unit, MCU for short),...

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Abstract

The invention provides a temperature control method and device of an electric car drive motor and an electric car. The method comprises following steps: monitoring the temperature of a drive motor ofan electric car after power on; when the temperature of the drive motor is greater than a first preset temperature threshold value and less than or equal to a second preset temperature threshold value, determining the limit torque of the drive motor according to the current performance parameters of a cooling system of the electric car and the current temperature of the drive motor; the first preset temperature threshold value is the maximum temperature at which the drive motor can operate normally over the rated power range; the second preset temperature threshold value is the critical temperature value at which the drive system of the electric car is at risk of failure; the cooling system performance parameters represent the cooling effectiveness of an electric car cooling system under maximum cooling capability conditions. The invention can effectively prevent the temperature of the drive motor from further rising, and at the same time can minimize the restriction on the torque output of the drive motor, thus ensuring the driving feeling of the driver.

Description

Technical field [0001] The present invention relates to the technical field of electric vehicles, and in particular to a temperature control method and device for driving motors of electric vehicles and electric vehicles. Background technique [0002] Faced with increasingly severe energy and environmental issues, energy-saving and new energy vehicles are becoming the current research focus. As a kind of energy-saving and new energy vehicles, pure electric vehicles have many advantages such as no exhaust emissions, high energy efficiency, low noise, and recyclable energy during driving. Therefore, the development of pure electric vehicles is important for energy safety and environmental protection. has great significance. [0003] Pure electric vehicles use motors to drive wheels to achieve vehicle driving. During the driving process, the drive system generates a lot of heat. In order to ensure the normal operation of the drive system, a certain cooling method is required to cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L3/00
CPCY02T10/72
Inventor 李玮代康伟梁海强刘超范江楠
Owner BEIJING ELECTRIC VEHICLE
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