VEHICLE CHARGING STATION HAVING DEGRADED ENERGY STORAGE UNITS AND METHODS THEREOF

• US 20180345807A1
• Filed: 05/31/2017
• Published: 12/06/2018
• Est. Priority Date: 05/31/2017
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Cun, David Wong
• Granted Patent: US 10,483,770 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 2240/62 Vehicle position
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2260/54 Energy consumption estimation
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/53 Batteries
• 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 58/12 responding to state of charge [SoC]
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 3/322 the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/0014 Circuits for equalisation of charge between batteries
• CPC Class Codes: H02J 7/0049 Detection of fully charged condition
• CPC Class Codes: H02J 7/005 Detection of state of health [SOH]
• CPC Class Codes: H02J 7/0063 with circuits adapted for supplying loads from the battery
• CPC Class Codes: H02J 7/007182 in response to battery voltage
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• CPC Class Codes: Y02E 60/00 : Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• 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 10/126 : the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
• CPC Class Codes: Y04S 30/12 : Remote or cooperative charging

Abstract

The systems and methods disclosed herein are directed to a vehicle charging station having at least one energy storage unit in a degraded state. The station may provide power using the energy storage unit to an electric or hybrid vehicle. In an illustrative embodiment, power from the station is provided to the vehicle from the energy storage unit, power grid or a combination thereof. Logic or processes for providing power to the energy storage unit for the charging station may depend on a variety of factors including, but not limited to, capacity of the energy storage units, number of units, information about an incoming vehicle to charge, etc. After charging, the energy storage unit in its degraded state may be used for fast charging the vehicle.

Claims

1. A computer-implemented method for a charging station to provide power to a vehicle energy storage unit, the method comprising:

determining power to be supplied by at least one energy storage unit on the charging station based on a degraded state of the at least one energy storage unit and power to be supplied by a power grid connected to the charging station; and

providing the power to the vehicle energy storage unit from the at least one energy storage unit on the charging station, the power grid or a combination thereof.

2. The computer-implemented method of claim 1, wherein determining the power to be supplied by the at least one energy storage unit on the charging station based on the degraded state of the at least one energy storage unit comprises detecting a maximum capacity of the at least one energy storage unit.

3. The computer-implemented method of claim 2, wherein detecting the maximum capacity of the at least one energy storage unit comprises fully powering the at least one energy storage unit and detecting an amount of time for the power of the at least one energy storage unit to reach zero.

4. The computer-implemented method of claim 1, wherein providing the power to the vehicle energy storage unit from the at least one energy storage unit, power grid or combination thereof comprises providing the power from the at least one energy storage unit first.

5. The computer-implemented method of claim 1, wherein providing the power to the vehicle energy storage unit from the at least one energy storage unit, power grid or combination thereof comprises providing the power simultaneously from the at least one energy storage unit and the power grid.

6. The computer-implemented method of claim 1, wherein determining the power to be supplied by the at least one energy storage unit on the charging station comprises detecting two or more energy storage units.

7. The computer-implemented method of claim 6, comprising providing power to the two or more energy storage units based on a station operator preference.

8. The computer-implemented method of claim 6, comprising providing power to the two or more energy storage units based on whether the two or more units have been charged and discharged lately.

9. The computer-implemented method of claim 6, comprising providing power to the two or more energy storage units based on whether the two or more energy units satisfy a total power request.

10. The computer-implemented method of claim 6, comprising providing power to the two or more energy storage units based on an oldest manufacturing date of the two or more energy storage units.

11. A charging station comprising:

at least one energy storage unit having a degraded maximum capacity; and

a controller determining power to be supplied by the at least one energy storage unit based on the degraded capacity and power to be supplied by a power grid.

12. The charging station of claim 11, wherein the controller prefills the power to be supplied by the at least one energy storage unit based on a predetermined table.

13. The charging station of claim 12, wherein the predetermined table is developed through a capacity of the at least one energy storage unit.

14. The charging station of claim 12, wherein the predetermined table comprises information about multiple energy storage units and corresponding fill times.

15. The charging station of claim 11, wherein the power to be supplied by the at least one energy storage unit based on the degraded capacity comprises completely prefilling the at least one energy storage unit and determining the power to be supplied by the power grid.

16. The charging station of claim 15, wherein the power to be supplied by the power grid is communicated with a power utility to forecast demand.

17. The charging station of claim 11, wherein the at least one energy storage unit is a depleted second use battery from an electric or hybrid vehicle.

18. The charging station of claim 17, wherein the second use battery has a capacity below 75%.

19. A charging station computing system comprising:

at least one processor; and

a memory operatively coupled to the processor, the memory storing program instructions that when executed by the processor, causes the processor to;

provide power to at least one energy storage unit having a degraded state based on a predetermined table;

provide power to a vehicle connected to the charging station with the at least one energy storage unit and supplemented by a power grid.

20. The charging station computing system of claim 19, wherein providing power to the at least one energy storage unit comprises providing power uniformly to multiple energy storage units having a degraded state.