Method for operating electrically driven motor vehicle and motor vehicle

A motor vehicle, electric drive technology, applied in the direction of electric vehicles, electrical devices, vehicle components, etc., can solve the problem of damage to passenger motor vehicles, achieve the effect of avoiding load and improving safety

Pending Publication Date: 2020-11-24
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, depending on the current driving situation, a stop of the motor vehicle due to the switching off of the high-voltage system may here be more dangerous for the passengers and / or than the danger caused by a fault in the high-voltage system greater risk of motor vehicle damage

Method used

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  • Method for operating electrically driven motor vehicle and motor vehicle
  • Method for operating electrically driven motor vehicle and motor vehicle
  • Method for operating electrically driven motor vehicle and motor vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0053] exist figure 1 The flow chart shown in FIG. 1 shows a method for operating an electrically driven motor vehicle 2 with a high-voltage system 4 .

[0054] In the event of a fault F in the high-voltage system 4 (this is also referred to as a fault situation), in a first step I the fault F is analyzed with regard to risks, in particular the risk of injury to passengers and / or the risk of damage to the motor vehicle. Such a fault F of the high-voltage system 4 is, for example, the temperature of the traction battery 6 of the high-voltage system 4 exceeding a predetermined value, which indicates an overheating of the traction battery 6 . As a result of the analysis, the fault F is assigned a first hazard class G 1 .

[0055] To analyze the fault F and to assign it to the first hazard class G 1 , the severity of the damage, ie the level of the damage, caused by the fault F on the part of the occupants and on the part of the motor vehicle 2 is predicted. For this purpose, ...

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Abstract

The invention relates to a method for operating an electrically driven motor vehicle and a motor vehicle. The invention relates to a method for operating an electrically driven motor vehicle having ahigh-voltage system, in which, in the event of a fault in the high-voltage system, the fault is evaluated in regard to a risk, and a first risk level corresponding to the risk is assigned to the faultas a result of the evaluation, wherein a current driving situation is evaluated with regard to a hazard occurring as a result of switching off the high-voltage system, and a second hazard level corresponding to the hazard is assigned to the current driving situation as a result of the evaluation; the first hazard level and the second hazard level are compared with each other with respect to the magnitude of the respective hazard assigned to the hazard levels; and the high-voltage system is shut off if the danger assigned to the first danger level is greater than the second danger level, and otherwise the high-voltage system is continued to operate. The invention also relates to such motor vehicle.

Description

technical field [0001] The invention relates to a method for operating an electrically driven motor vehicle, in which faults in a high-voltage system of the motor vehicle are analyzed. The invention also relates to such a motor vehicle. Background technique [0002] Electric vehicles usually have a high-voltage system (HV system, high-voltage system, high-voltage on-board electrical system) with a traction battery pack (HV battery pack) that supplies energy to an electric machine for driving the electric vehicle. In this context, an electrically driven motor vehicle is to be understood in particular as: an electric vehicle which stores the energy required for driving only in a traction battery (BEV, battery electric vehicle); Range extender electric vehicle (REEV, range extended electric vehicle (extended range electric vehicle)); hybrid electric vehicle (HEV, hybrid electric vehicle); plug-in hybrid electric vehicle (PHEV, plug-in hybrid electric vehicle); and / Or a fuel...

Claims

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Application Information

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IPC IPC(8): B60L3/00B60L3/04
CPCB60L3/0046B60L3/0069B60L3/0023B60L3/04B60L3/00
Inventor U.拉赫蒙德
Owner VOLKSWAGEN AG
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