Method and system for preventing the driving of an electrically driven vehicle
AssigneeAudi AG
InventorsRainer Halmheu, Florian Meilinger
Life of this patent
Estimating the term…
Abstract
A method is provided for preventing the driving of an electrically driven vehicle, having an electrical energy source and at least one electrical machine for a driving operation of the vehicle, between which there is arranged at least one switch, wherein electrical energy is exchanged between the electrical energy source and the electrical machine when the at least one switch is closed, includes, in the event that the driving of the vehicle is to be prevented, relaying a command designed for this purpose to a controller of the vehicle and receiving the command, by the controller, whereupon the at least one switch is opened by the controller if the vehicle is in a safe, nonmoving condition.
Claims11
A method for preventing driving of an electric vehicle having an electrical energy source, at least one electrical machine that converts electrical energy supplied by the electrical energy source into mechanical energy that propels the electric vehicle, and at least one switch, wherein electrical energy is exchanged between the electrical energy source and the at least one electrical machine when the at least one switch is closed, the method comprising:
- when the driving of the electric vehicle is to be prevented, relaying a command to prevent the driving of the electric vehicle to a controller of the electric vehicle;
- upon receipt of the command by the controller,
- detecting, by the controller, whether the electric vehicle is in a safe condition, wherein the controller detects that the electric vehicle is in the safe condition in response to determining that a speed of the electric vehicle is zero after at least a defined time interval expires;
- and
- opening the at least one switch by the controller after detecting that the electric vehicle is in the safe condition.
A system for preventing driving of an electric vehicle having an electrical energy source and at least one electrical machine that converts electrical energy supplied by the electrical energy source into mechanical energy that propels the electric vehicle, the system comprising:
- at least one switch arranged between the electrical energy source and the at least one electrical machine, wherein electrical energy is exchanged between the electrical energy source and the at least one electrical machine when the at least one switch is closed;
- and
- a controller;
- wherein, when the driving of the electric vehicle is to be prevented, a command to prevent the driving of the electric vehicle is relayed to the controller,
- wherein the controller, in operation, receives the command and, upon receipt of the command,
- detects whether the electric vehicle is in a safe condition, wherein the controller detects that the electric vehicle is in the safe condition in response to determining that a speed of the electric vehicle is zero after at least a defined time interval expires, and
- opens the at least one switch after detecting that the electric vehicle is in the safe condition.
Dependencies are inferred from the claim text.