Power control system for an electric vehicle and a method therefor

Patent metadata

Field	Value
Publication number	US-11482064-B2
Application number	US-202117395218-A
Country	US
Kind code	B2
Filing date	Aug 5, 2021
Priority date	Dec 21, 2020
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A power control system for an electric vehicle without a start manipulator, and a method therefor, includes a communication device that performs wireless communication with an electronic key and a body controller connected with the communication device. The body controller determines a power control mode as a factory mode or an electronic key discharge mode based on whether an electronic key is learned and whether a battery of the electronic key is discharged and controls vehicle power transition depending on power transition logic matched to the determined power control mode.

First claim

What is claimed is:

1. A power control system for an electric vehicle in which a start manipulator is not included, the power control system comprising:
a communication device configured to perform wireless communication with an electronic key; and
a body controller connected with the communication device, wherein the body controller is configured to determine a power control mode as a factory mode or an electronic key discharge mode based on whether the electronic key is learned and whether a battery of the electronic key is discharged and control vehicle power transition depending on power transition logic matched to the determined power control mode.

2. The power control system of claim 1 , wherein the body controller determines the power control mode as the factory mode, when the electronic key is learned, and determines the power control mode as the electronic key discharge mode when the electronic key is not detected outside the vehicle and when a door is opened by a mechanical key, when the electronic key is learned.

3. The power control system of claim 1 , wherein the body controller outputs an emergency start guide pop-up when the electronic key discharge mode is determined.

4. The power control system of claim 1 , wherein the body controller verifies a vehicle door state using a door switch in the electronic key discharge mode to determine whether a driver rides in the vehicle.

5. The power control system of claim 1 , wherein the body controller transitions a vehicle power state to a vehicle power on state when it is possible for the electronic key to perform immobilizer communication and when there is a P-stage switch input, and transitions the vehicle power state to an electric vehicle (EV) ready state when there is a brake input in the vehicle power on state.

6. The power control system of claim 5 , wherein the body controller transitions the vehicle power state to a vehicle power off state when there is the P-stage switch input in the vehicle power on state, and transitions the vehicle power state to the vehicle power off state when there are the brake input and the P-stage switch input in the EV ready state.

7. The power control system of claim 1 , wherein the body controller performs external authentication or internal authentication of the electronic key in a vehicle power off state and transitions a vehicle power state to a vehicle power on state when a driver rides in the vehicle or when a P-stage switch input is detected.

8. The power control system of claim 7 , wherein the body controller performs the internal authentication of the electronic key in the vehicle power on state and transitions the vehicle power state to an EV ready state when a brake input or the P-stage switch input is detected.

9. The power control system of claim 1 , wherein the body controller switches a power control mode to a shared mode, when a door is unlocked using a shared electronic key, transitions to a vehicle power on state, when at least one door is opened and all doors are closed in a vehicle power off state, and transitions to an EV ready state, when receiving a driving start request in the vehicle power on state, transitions to the vehicle power on state, when the vehicle arrives at a destination, at least one door is opened, and all the doors are closed, and transitions to the vehicle power off state, when a vehicle door is locked using the shared electronic key in the vehicle power on state.

10. The power control system of claim 9 , wherein the body controller switches to a Bluetooth call mode when internal authentication of the electronic key is not performed when a vehicle speed is less than or equal to a reference speed in the EV ready state.

11. A power control method for an electric vehicle in which a start manipulator is not included, the power control method comprising:
determining, by a body controller, a power control mode as a factory mode or an electronic key discharge mode based on whether an electronic key is learned and whether a battery of the electronic key is discharged, wherein the body controller performs wireless communication with the electronic key using a communication device; and
controlling, by the body controller, vehicle power transition depending on power transition logic matched to the determined power control mode.

12. The power control method of claim 11 , wherein the determining of the power control mode as the factory mode or the electronic key discharge mode includes:
determining the power control mode as the factory mode when the electronic key is learned; and
determining the power control mode as the electronic key discharge mode when the electronic key is not detected outside the vehicle and when a door is opened by a mechanical key, when the electronic key is learned.

13. The power control method of claim 12 , wherein the determining of the power control mode as the factory mode or the electronic key discharge mode further includes:
outputting an emergency start guide pop-up when the electronic key discharge mode is determined.

14. The power control method of claim 11 , wherein the controlling of the vehicle power transition includes:
verifying a vehicle door state using a door switch in the electronic key discharge mode to determine whether a driver rides in the vehicle.

15. The power control method of claim 11 , wherein the controlling of the vehicle power transition includes:
transitioning a vehicle power state to a vehicle power on state when it is possible for the electronic key to perform immobilizer communication and when there is a P-stage switch input; and
transitioning the vehicle power state to an EV ready state when there is a brake input in the vehicle power on state.

16. The power control method of claim 15 , wherein the controlling of the vehicle power transition further includes:
transitioning the vehicle power state to a vehicle power off state when there is the P-stage switch input in the vehicle power on state; and
transitioning the vehicle power state to the vehicle power off state when there are the brake input and the P-stage switch input in the EV ready state.

17. The power control method of claim 11 , further comprising:
performing external authentication or internal authentication of the electronic key in a vehicle power off state and transitioning a vehicle power state to a vehicle power on state when a driver rides in the vehicle or when a P-stage switch input is detected.

18. The power control method of claim 17 , further comprising:
performing the internal authentication of the electronic key in the vehicle power on state and transitioning the vehicle power state to an EV ready state when a brake input or the P-stage switch input is detected.

19. The power control method of claim 11 , further comprising:
switching a power control mode to a shared mode when a door is unlocked using a shared electronic key;
transitioning to a vehicle power on state when at least one door is opened and all doors are closed in a vehicle power off state;
transitioning to an EV ready state when receiving a driving start request in the vehicle power on state;
transitioning to the vehicle power on state when the vehicle arrives at a destination, at least one door is opened, and all the doors are closed; and
transitioning to a vehicle power off state when a vehicle door is locked using the shared electronic key in the vehicle power on state.

20. The power control method of claim 19 , further comprising:
switching to a Bluetooth call mode when internal

Assignees

• Hyundai Motor Co Ltd
• Kia Corp

Inventors

• Oh Da Ye
• Lee Ki Suk

Classifications

• H02J7/40

  characterised by the exchange of charge or discharge related data · CPC title

• H02J7/47

  Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source · CPC title

• B60L3/00 Primary

  Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption (methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00) · CPC title

• G07C2009/00603

  by power transmission from lock · CPC title

• B60R25/34

  of conditions of vehicle components, e.g. of windows, door locks or gear selectors · CPC title