A control method and device for an electric vehicle, and the electric vehicle

A technology of an electric vehicle and a control method, applied in the field of an electric vehicle, a control method of an electric vehicle, and a device, can solve the problems of high temperature of components, burning out, affecting the driving of the vehicle, etc.

Active Publication Date: 2019-11-12
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a control method and device for an electric vehicle and the electric vehicle, which are used to solve the problem that the components in the front cabin of the electric vehicle are burned due to excessive temperature, thereby affecting the driving of the vehicle in the prior art

Method used

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  • A control method and device for an electric vehicle, and the electric vehicle
  • A control method and device for an electric vehicle, and the electric vehicle
  • A control method and device for an electric vehicle, and the electric vehicle

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Embodiment Construction

[0055] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0056] The layout of the front compartment cooling system of electric vehicles is as follows: figure 1As shown, the coolant circulates through the pipes between the motor controller, motor, power distribution unit, radiator tank, and water pump. During the operation of electric vehicles, the temperature of the motor controller, motor and power distribution unit will continue to rise due to their own heat generation. If the heat dissipation is n...

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Abstract

The invention provides a control method and device of an electric vehicle and the electric vehicle. The electric vehicle comprises a motor controller, a motor, an electricity distributing unit and a cooling system, wherein by means of the cooling system, coolant sequentially flows through the motor controller, the motor and the electricity distributing unit. The method includes the steps of obtaining the first temperature of the coolant flowing through the motor controller, the second temperature of the coolant flowing through the motor and the third temperature of the coolant flowing throughthe electricity distributing unit, comparing the first temperature, the second temperature and the third temperature to obtain a comparison result, judging whether the electric vehicle fails or not according to the comparison result, and outputting failure prompting information when it is judged that the electric vehicle fails. By obtaining the temperatures of the coolant at different positions and judging whether the electric vehicle fails or not according to the obtained temperatures, it is avoided that the motor controller, the motor or the electricity distributing unit is burned down due to too high temperature, the driving of the electric vehicle is affected and even safety accidents are caused.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to a control method and device for an electric vehicle and the electric vehicle. Background technique [0002] An electric vehicle refers to a vehicle in which all or part of the driving force is provided by an electric motor. The front cabin of an electric vehicle includes major components such as motors, motor controllers, and power distribution units. The main components generate a lot of heat during driving of electric vehicles, so cooling systems are usually used to assist in heat dissipation. [0003] Typically the cooling system dissipates heat by circulating coolant through the motor, motor controller and power distribution unit. However, when the heat dissipation effect is poor and the temperature of all or some components in the motor, motor controller and power distribution unit is too high, if the electric vehicle does not have a fault warning, the overheated components w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K1/00B60Q9/00
CPCB60K1/00B60K2001/003B60K2001/006B60Q9/00
Inventor 蒋荣勋严雅霜白洁苏伟
Owner BEIJING ELECTRIC VEHICLE
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