APPARATUS AND METHOD FOR CHARGING AND DISCHARGING ELECTRIC VEHICLE UNDER SMART GRID ENVIRONMENT

• US 20180312072A1
• Filed: 12/06/2017
• Published: 11/01/2018
• Est. Priority Date: 04/28/2017
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.), YURA Corporation
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.), YURA Corporation
• Inventors: YANG, Chang Min, Kim, Ji Hwon, Kim, Young Chan, Song, Hye Jin
• Granted Patent: US 11,413,984 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 50/50 using propulsion power supplied by batteries or fuel cells
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/62 in response to charging parameters, e.g. current, voltage or electrical charge
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/64 Optimising energy costs, e.g. responding to electricity rates
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: B60L 53/67 Controlling two or more charging stations
• CPC Class Codes: B60L 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/167 Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/12 Remote or cooperative charging
• CPC Class Codes: Y04S 30/14 Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

An in-vehicle power system includes: a charging-discharging device configured to selectively perform both a charging function for receiving and delivering a first power signal and a discharging function for transmitting a second power signal; a battery configured to store an electrical energy transferred after DC conversion of the first power signal; and a charging-discharging controller configured to control the charging-discharging device based on a user'"'"'s input or a predetermined control pattern.

Claims

1. An in-vehicle power system, comprising:

a charging-discharging device configured to selectively perform both a charging function for receiving and delivering a first power signal and a discharging function for transmitting a second power signal;

a battery configured to store an electrical energy transferred after DC conversion of the first power signal; and

a charging-discharging controller configured to control the charging-discharging device based on a user'"'"'s input or a predetermined control pattern.

2. The in-vehicle power system according to claim 1, wherein the first power signal is an Alternating Current (AC) power signal, while the second power signal is a Direct Current (DC) power signal.

3. The in-vehicle power system according to claim 1, wherein the charging-discharging device is coupled to a single electric power inlet, which is disposed in a vehicle, for receiving the first power signal and transmitting the second power signal.

4. The in-vehicle power system according to claim 1, wherein the charging-discharging device is coupled to both a first electric power inlet for receiving the first power signal and a second electric power inlet for transmitting the second power signal, wherein the first electric power inlet and the second electric power inlet are disposed in a vehicle.

5. The in-vehicle power system according to claim 1, further comprising:

a battery management system (BMS) configured to monitor a charging status and a temperature of the battery and to report monitored data to the charging-discharging controller.

6. The in-vehicle power system according to claim 1, wherein the predetermined control pattern is determined based on at least one of a time zone, a fee schedule on the first power signal, and an option preset for charging the battery.

7. The in-vehicle power system according to claim 6, wherein the fee schedule on the first power signal varies according to the time zone,

wherein the charging-discharging device performs the charging function when a fee is high and performs the discharging function when the fee is low.

8. The in-vehicle power system according to claim 7, wherein the discharging operation is performed only when the battery is charged beyond a preset minimum charging requirement.

9. The in-vehicle power system according to claim 7, wherein the charging operation is performed based on the fee schedule and a charging target amount of the battery.

10. The in-vehicle power system according to claim 1, wherein the charging-discharging device receives a third power signal distinguishable from the first power signal when the first power signal is not supplied.

11. The in-vehicle power system according to claim 10, wherein the third power signal is a DC power signal.

12. The in-vehicle power system according to claim 1, wherein the user'"'"'s input is entered via an audio-video-navigation device of a vehicle, and

wherein the predetermined control pattern is stored in a storage engaged with the audio-video-navigation device.

13. The in-vehicle power system according to claim 12, wherein the entering the user'"'"'s input and setting the predetermined control pattern can be performed via a wireless communication device engaged with the audio-video-navigation device.

14. The in-vehicle power system according to claim 13, wherein the charging-discharging controller delivers information on at least one of the charging operation, the discharging operation, and a charging status of the battery.

17. The method according to claim 14, wherein the transmitting the electrical energy is performed in response to a user'"'"'s input or a predetermined control pattern.

18. The method according to claim 17, wherein the predetermined control pattern is determined based on at least one of a time zone, a fee schedule on the first power signal, and an option preset for charging the battery.

15. A method for charging or discharging a vehicle, comprising:

receiving, by a charging-discharging device, a first power signal in response to a fee schedule on the first power signal to charge a battery; and

transmitting, by the charging-discharging device, an electrical energy stored in the battery as a second power signal in response to the fee schedule when a charging status of the battery is beyond a predetermined level.

16. The method according to claim 15, wherein the receiving the first power signal includes:

converting the first power signal into a direct current (DC) power signal; and

accumulating the DC power signal in the battery,

wherein the first power signal is an alternating current (AC) power signal.

19. A power management system for use in a house, comprising:

a power distributor coupled to a smart grid and configured to supply a first power signal for charging a vehicle;

a battery configured to store an electrical energy delivered from the power distributor; and

a power transfer supply configured to receive and transmit the electrical energy between the battery and the vehicle.

20. The power management system according to claim 19, wherein the power transfer supply is configured to, in response to a request from the vehicle, transmit the electrical energy stored in the battery or receive the electrical energy from the vehicle.