Method and system for selectively charging a battery

• US 20060103355A1
• Filed: 11/16/2004
• Published: 05/18/2006
• Est. Priority Date: 11/16/2004
• Status: Abandoned Application

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Patino, Joseph, Demuro, David M.
• Application Number:
  US10/990,132
• Publication Number:
  US 20060103355A1
• Time in Patent Office: Days
• US Class Current: 320/138
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/0069 Charging or discharging for charge maintenance, battery initiation or rejuvenation

Abstract

The invention concerns a method (300) and system (100) for selectively charging a battery (112). In one arrangement, the method can include the steps of coupling (311) the battery to a first power supply (114), coupling (311) the battery to a second power supply (116), determining (312) an available charging current parameter for the battery and selectively enabling (314) a charging circuit (120) for the first power supply and a charging circuit (122) for the second power supply based on the available charging current parameter of the battery. The selectively enabling process can be based on maximizing (316) an available charging current of the battery and minimizing (320) a power dissipation of the battery. As an example, the first power supply can be a hard-wired charger (114), and the second power supply can be a wireless charger (116).

Claims

1. A method for selectively charging a battery, comprising the steps of:

coupling the battery to a first power supply;

coupling the battery to a second power supply;

determining an available charging current parameter for the battery; and

selectively enabling a charging circuit for the first power supply and a charging circuit for the second power supply based on the available charging current parameter of the battery.

2. The method according to claim 1, wherein the selectively enabling step further comprises selectively enabling the charging circuit for the first power supply and the charging circuit for the second power supply based on maximizing the available charging current parameter of the battery.

3. The method according to claim 2, wherein the selectively enabling step further comprises enabling both the charging circuit for the first power supply and the charging circuit for the second power supply only if charging current generated by the first power supply and the second power supply is at least one of at and below the available charging current parameter.

4. The method according to claim 1, wherein the selectively enabling step further comprises selectively enabling the charging circuit for the first power supply and the charging circuit for the second power supply based on minimizing a power dissipation in the battery.

5. The method according to claim 4, wherein the selectively enabling step further comprises minimizing the power dissipation in the battery by enabling at least one of the charging circuit for the first power supply and the charging circuit for the second power supply based on which of the first power supply and the second power supply will provide charging current at a lower charging voltage.

6. The method according to claim 1, wherein the first power supply is a hard-wired charger and the second power supply is a wireless charger and the method further comprises the steps of:

charging the battery with the hard-wired charger if the charging circuit for the first power supply is enabled; and

wirelessly charging the battery with the wireless charger if the charging circuit for the second power supply is enabled.

7. The method according to claim 1, wherein the battery is coupled to a portable electronic device.

8. The method according to claim 7, wherein the portable electronic device is at least one of a cellular telephone, a personal digital assistant, a two-way radio and a charger.

9. A system for selectively charging a battery, comprising:

a first charging line that receives charging current from a first power supply;

a second charging line that receives charging current from a second power supply; and

a processing unit, wherein the processing unit is programmed to;

determine an available charging current parameter for a battery; and

selectively enable at least one of the first charging line and the second charging line to provide charging current to the battery based on the available charging current parameter for the battery.

10. The system according to claim 9, wherein the processing unit is programmed to selectively enable the first and second charging lines based on maximizing the available charging current parameter.

11. The system according to claim 10, wherein the processing unit is programmed to enable both the first charging line and the second charging line only if charging current generated by the first power supply and the second power supply is at least one of at and below the available charging current parameter.

12. The system according to claim 9, wherein the processing unit is programmed to selectively enable the first charging line for the first power supply and the second charging line for the second power supply based on minimizing a power dissipation in the battery.

13. The system according to claim 12, wherein the processing unit is programmed to minimize the power dissipation in the battery by enabling at least one of the first charging line for the first power supply and the second charging line for the second power supply based on which of the first power supply and the second power supply will provide charging current at a lower charging voltage.

14. The system according to claim 9, further comprising a portable electronic device, wherein the first charging line is in the portable electronic device and the second charging line is in the battery.

15. The system according to claim 9, wherein the first power supply is a hard-wired charger and the second power supply is a wireless charger, wherein the hard-wired charger charges the battery if the first charging line is enabled and the wireless charger charges the battery if the second charging line is enabled.

16. The system according to claim 9, wherein the portable electronic device is at least one of a cellular telephone, a personal digital assistant, a two-way radio and a charger.

17. A battery, comprising:

a charging line that receives charging current from a first power supply and a second power supply; and

a processor coupled to the charging line, wherein the processor is programmed to operate in tandem with another processor in a portable electronic device to;

determine an available charging current parameter for the battery; and

selectively control charging current on the charging line from the first power supply and the second power supply based on the available charging current parameter for the battery.

18. The battery according to claim 17, wherein the battery processor is further programmed to operate in tandem with the processor in the portable electronic device by selectively controlling the charging current on the charging line based on maximizing the available charging current parameter.

19. The battery according to claim 17, wherein the battery processor is further programmed to operate in tandem with the processor in the portable electronic device by selectively controlling the charging current on the charging line based on minimizing a power dissipation in the battery.

20. The battery according to claim 17, wherein the first power supply is a hard-wired charger and the second power supply is a wireless charger.

21. The battery according to claim 17, wherein the portable electronic device is at least one of a cellular telephone, a personal digital assistant, a two-way radio and a charger.