COORDINATED CONTROL OF ELECTRIC VEHICLE CHARGING AND HVAC

• US 20120210733A1
• Filed: 02/20/2012
• Published: 08/23/2012
• Est. Priority Date: 02/22/2011
• Status: Active Grant

• Current Assignee: Ademco Inc. (Resideo Technologies, Inc.)
• Original Assignee: Honeywell International Inc.
• Inventors: Kolavennu, Soumitri N., Kaufman, Davis R.
• Granted Patent: US 9,577,291 B2
• Time in Patent Office: Days
• US Class Current: 62/56
• CPC Class Codes: B60H 1/00278 for the battery arrangement of batteries B60R16/04
• CPC Class Codes: B60H 1/00392 for electric vehicles having only electric drive means
• CPC Class Codes: B60L 1/06 using only one supply
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: G05D 23/19 characterised by the use of electric means G05D23/1393 takes precedence
• CPC Class Codes: H01M 10/42 Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells H01M10/60 takes precedence
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• 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 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: 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]

Abstract

A system and method include receiving a temperature signal from a temperature sensor, controlling operation of an air conditioner condenser, and controlling an electric vehicle charger to operate to charge an electric vehicle battery only when the air conditioner condenser is not running.

Claims

1. A system comprising:

an input to receive indoor temperature measurements;

an air conditioner control output to couple to an air conditioner to provide control signals to the air conditioner;

an electric vehicle battery charger output to couple to an electrical vehicle battery charger to provide control signals to the electric vehicle battery charger; and

a controller to receive the input and provide the control signals on the outputs to ensure either the air conditioner or the electric vehicle battery charger is operating at a given time.

2. The system of claim 1 wherein the controller is a thermostat that selects either the air conditioner or the electric vehicle to run as a function of an air conditioner compressor duty cycle.

3. The system of claim 1 wherein the controller is a thermostat that selects either the air conditioner or the electric vehicle to run as a function of an air conditioner dead band control.

4. The system of claim 3 wherein the dead band control has a lower limit and an upper limit around a set point, and wherein the electric vehicle charger is turned off when the upper limit is reached.

5. The system of claim 4 wherein the electric vehicle charger is turned on when the lower limit is reached.

6. The system of claim 1 and further comprising an input to receive a battery charge signal.

7. The system of claim 1 and further comprising an input to receive a signal representing power drawn from the grid.

8. A method comprising:

receiving a temperature signal from a temperature sensor;

controlling operation of an air conditioner condenser; and

controlling an electric vehicle charger to operate to charge an electric vehicle battery only when the air conditioner condenser is not running.

9. The method of claim 8 wherein the air conditioner condenser is controlled in accordance with a duty cycle, and wherein the duty cycle is decreased when the electric vehicle battery needs charging.

10. The method of claim 8 wherein the air conditioner condenser is controlled in accordance with a set point and dead band, and wherein the dead band is increased when the electric vehicle battery needs charging.

11. The method of claim 10 wherein the air conditioner condenser is controlled in accordance with a duty cycle, and wherein the duty cycle is also decreased when the electric vehicle battery needs charging.

12. The method of claim 8 wherein the controller selects either the air conditioner or the electric vehicle to run as a function of an air conditioner compressor duty cycle.

13. The method of claim 8 wherein the controller selects either the air conditioner or the electric vehicle to run as a function of an air conditioner dead band control.

14. The method of claim 13 wherein the dead band control has a lower limit and an upper limit around a set point, and wherein the electric vehicle charger is turned off when the upper limit is reached.

15. The method of claim 14 wherein the electric vehicle charger is turned on when the lower limit is reached.

16. The method of claim 8 and further comprising an input to receive a battery charge signal.

17. The method of claim 8 and further comprising an input to receive a signal representing power drawn from the grid.

18. A computer readable storage device having instructions stored thereon to cause a computer to perform a method, the method comprising:

receiving a temperature signal from a temperature sensor;

controlling operation of an air conditioner condenser; and

controlling an electric vehicle charger to operate to charge an electric vehicle battery only when the air conditioner condenser is not running.

19. The computer readable storage device of claim 18 wherein the air conditioner condenser is controlled in accordance with a duty cycle, and wherein the duty cycle is decreased when the electric vehicle battery needs charging.

20. The computer readable storage device of claim 18 wherein the air conditioner condenser is controlled in accordance with a set point and dead band, and wherein the dead band is increased when the electric vehicle battery needs charging.