Switch array and power management system for batteries and other energy storage elements

• US 20060092583A1
• Filed: 10/03/2005
• Published: 05/04/2006
• Est. Priority Date: 10/01/2004
• Status: Abandoned Application

• Current Assignee: California Institute of Technology, Idaho Research Foundation, Inc.
• Original Assignee: California Institute of Technology
• Inventors: Cox, David, Mojarradi, Mohammad M., Buck, Kevin M., Hess, Herbert L., Alahmad, Mahmoud A., Sukumar, Vinesh, Li, Harry, Zghoul, Fadl Nasser
• Application Number:
  US11/243,096
• Publication Number:
  US 20060092583A1
• Time in Patent Office: Days
• US Class Current: 361/15
• CPC Class Codes: H02J 7/0024 Parallel/serial switching of connection of batteries to charge or load circuit

Abstract

In one embodiment, an electronic device comprises a plurality of electrical switches and a plurality of energy storage elements arrayed relative to one another such that the energy storage elements may be connected in series, or in parallel, or both, to an input and an output.

Claims

1. An electronic device, comprising a plurality of electrical switches and a plurality of energy storage elements arrayed relative to one another such that energy storage elements may be connected in series and/or, in parallel, to an input and/or an output.

2. The device of claim 1, wherein each energy storage element comprises a battery or a capacitor.

3. The device of claim 2, further comprising an input and an output.

4. The device of claim 3, wherein the input comprises a source of electric current and the device further comprising an electrical charging switch between the current source and the array of switches and storage elements.

5. The device of claim 3, wherein the output comprises an electrical load and the device further comprising an electrical discharging switch between the load and the array of switches and storage elements.

6. The device of claim 3, wherein each energy storage element comprises a battery or a capacitor, the input comprises a source of electric current, and the output comprises an electrical load, and the device further comprising an electrical charging switch between the source and the array of switches and storage elements and an electrical discharging switch between the load and the array of switches and storage elements.

7. The device of claim 1, wherein the switches and the storage elements are further arrayed such that each storage element may be isolated from the other storage elements and from an input and an output.

8. The device of claim 6, wherein the switches and the storage elements are further arrayed such that each storage element may be isolated from the source, the load and the other storage elements.

9. A charging circuit, comprising:

a source of electric current;

a plurality of energy storage elements;

a first plurality of electrical switches, each of the storage elements connected to the current source through a corresponding switch in the first plurality of switches; and

a second plurality of electrical switches, each of the energy storage elements connected to each of the other storage elements through corresponding switches in the second plurality of switches.

10. The charging circuit of claim 9, further comprising an electrical charging switch between the current source and the first plurality of switches.

11. A discharging circuit, comprising:

an electrical load;

a plurality of energy storage elements;

a first plurality of electrical switches, each of the storage elements connected to the load through a corresponding switch in the first plurality of switches; and

a second plurality of electrical switches, each of the energy storage elements connected to each of the other storage elements through corresponding switches in the second plurality of switches.

12. The discharging circuit of claim 11, further comprising an electrical discharging switch between the load and the first plurality of switches.

13. A circuit, comprising:

a source of electric current;

an electrical load;

a plurality of energy storage elements;

a first plurality of electrical switches, each of the storage elements connected to the current source and the load through a corresponding switch in the first plurality of switches; and

a second plurality of electrical switches, each of the energy storage elements connected to each of the other storage elements through corresponding switches in the second plurality of switches.

14. The circuit of claim 13, further comprising:

an electrical charging switch between the current source and the first plurality of switches; and

an electrical discharging switch between the load and the first plurality of switches.

15. An electronic device, comprising:

a charging circuit including a source of electric current, a plurality of energy storage elements, a first plurality of electrical switches, each of the storage elements connected to the current source through a corresponding switch in the first plurality of switches, and an electrical charging switch between the current source and the first plurality of switches;

a discharging circuit including an electrical load, the plurality of energy storage elements, a second plurality of electrical switches, each of the storage elements connected to the load through a corresponding switch in the second plurality of switches, and an electrical discharging switch between the load and the second plurality of switches; and

a third plurality of electrical switches, each of the energy storage elements connected to another storage element through a corresponding switch in the third plurality of switches.

16. The device of claim 15, wherein some of the energy storage elements are connected to more than one of the other storage elements through corresponding switches in the third plurality of switches.

17. An integrated circuit, comprising:

an array of microbatteries; and

a plurality of CMOS (complementary metal oxide semiconductor) switches operatively connected to the microbatteries such that the microbatteries may be connected in series and/or in parallel to a current source and/or to a load.

18. The integrated circuit of claim 17, wherein at least some of the CMOS switches comprise MOI (microwave on insulator) switches.

19. An integrated circuit, comprising:

an array of microbatteries; and

a plurality of MOI (microwave on insulator) switches operatively connected to the microbatteries such that the microbatteries may be connected in series and/or in parallel to a current source and to a load and such that each microbattery may be isolated from the other microbatteries and from the current source and the load.