Method and system for activating an electric vehicle
AssigneeTaiga Motors Inc.
InventorsSamuel BRUNEAU, Gabriel BERNATCHEZ
Life of this patent
Estimating the term…
Abstract
Systems and methods for activating electric vehicles and for reducing parasitic power draw from batteries of electric vehicles are provided. An electric system of an electric vehicle includes a main battery for powering an electric motor configured to propel the electric vehicle, an ancillary battery having a smaller size than the main battery, and a signal generator using power from the ancillary battery to generate a power-on signal to cause the electric vehicle to transition from the inactive state to an active state in response to a vehicle activation command. The main battery is electrically disconnected from any electric control units of the electric vehicle during an inactive state of the electric vehicle.
Claims24
An electric vehicle comprising:
- an electric motor for propelling the electric vehicle;
- a high-voltage (HV) battery for powering the electric motor when the electric motor is propelling the electric vehicle, the HV battery being electrically disconnected from any electronic control units of the electric vehicle during an inactive state of the electric vehicle;
- a low-voltage (LV) battery having a lower voltage than the HV battery;
- and
- a signal generator operatively connected to the LV battery to receive electric power from the LV battery, the signal generator using power from the LV battery to generate a power-on signal to cause the electric vehicle to transition from the inactive state to an active state in response to a vehicle activation command, at least one electronic control unit of the electric vehicle being electrically connected to the HV battery during the active state.
An electric system of an electric vehicle, the electric system comprising:
- a main battery pack for powering an electric motor configured to propel the electric vehicle, the main battery pack being electrically disconnected from any electric loads of the electric vehicle during an inactive state of the electric vehicle;
- an ancillary battery having a smaller size than the main battery pack;
- and
- a signal generator operatively connected to the ancillary battery to receive electric power from the ancillary battery, the signal generator using power from the ancillary battery to generate a power-on signal to cause the electric vehicle to transition from the inactive state to an active state in response to a vehicle activation command, the main battery pack being connected to one or more of the electric loads of the electric vehicle during the active state of the electric vehicle.
A method of activating an electric vehicle, the electric vehicle including a main battery for powering an electric motor configured to propel the electric vehicle, and an ancillary battery having a smaller size than the main battery, the method comprising:
- when the electric vehicle is in an inactive state wherein the main battery is electrically disconnected from any electronic control units of the electric vehicle, receiving a vehicle activation command;
- and
- in response to the vehicle activation command, using power from the ancillary battery to generate a power-on signal to cause the electric vehicle to transition from the inactive state to an active state, the main battery being connected to at least one electronic control unit of the electric vehicle during the active state of the electric vehicle.
Dependencies are inferred from the claim text.