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Vehicle control method and device and electric vehicle

A control method and vehicle controller technology, applied in the direction of electric vehicles, vehicle components, electrical devices, etc., can solve problems such as inability to guarantee driving safety, and achieve the effect of improving vehicle safety

Pending Publication Date: 2022-06-28
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a vehicle control method, device and electric vehicle, which solves the problem that driving safety cannot be guaranteed when DCDC fails

Method used

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  • Vehicle control method and device and electric vehicle
  • Vehicle control method and device and electric vehicle
  • Vehicle control method and device and electric vehicle

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Embodiment Construction

[0034] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art.

[0035] like figure 1 As shown, an embodiment of the present invention provides a vehicle control method, which is applied to a vehicle controller VCU, including:

[0036] Step 11: Detect the working state of the DC converter DCDC; wherein, the working state of the DCDC includes: a fault state and a non-fault state;

[0037] In this step, the main function of DCDC is to convert high-voltage direct current into 12V low-voltage di...

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PUM

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Abstract

The invention discloses a vehicle control method and device and an electric vehicle, and is applied to a vehicle control unit VCU, and the method comprises the steps that the working state of a direct current converter DCDC is detected; wherein the working state of the DCDC comprises a fault state and a non-fault state; and when it is detected that the DCDC is in the fault state, turning off an electronic control unit (ECU) in a grading manner. According to the scheme, the driving safety can be guaranteed when the DCDC breaks down.

Description

technical field [0001] The present invention relates to the technical field of electric vehicles, and in particular, to a vehicle control method, a device and an electric vehicle. Background technique [0002] With the improvement of electric vehicle technology, more and more people choose electric vehicles as travel tools. The high-voltage battery is connected to the DC power converter DCDC, which provides the power supply of all low-voltage electrical appliances and the charging of the battery during the operation of the car through the high-low voltage conversion. When the DCDC fails, the battery will provide low-voltage electricity to the entire vehicle electrical appliances. Start, and can not support high-power long-term power supply, so once the DCDC fails, the battery will soon be fed. The battery feeding will cause the electronic control unit ECU to fail to work normally, and even lead to driving safety accidents in serious cases. Therefore, how to ensure the driv...

Claims

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Application Information

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IPC IPC(8): B60L3/00B60L3/04
CPCB60L3/003B60L3/04B60L3/0046
Inventor 佟晨光杨国亮张嵩周炳峰张兆龙
Owner BEIJING ELECTRIC VEHICLE
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