Battery having a built-in controller

• US 6,163,131 A
• Filed: 04/02/1998
• Issued: 12/19/2000
• Est. Priority Date: 04/02/1998
• Status: Expired due to Term

• Current Assignee: Board of Trustees of The University of Illinois, International Business Machines Corporation
• Original Assignee: The Procter & Gamble Company
• Inventors: Gartstein, Vladimir, Nebrigic, Dragan Danilo
• Primary Examiner(s): Berhane, Adolf Deneke
• Assistant Examiner(s): TOATLEY, GREGORY J
• Application Number:
  US09/054,087
• Time in Patent Office: 992 Days
• Field of Search: 320/118, 320/107, 320/127, 320/135, 320/136, 324/426
• US Class Current: 320/118
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 7/00712 the cycle being controlled or terminated in response to electric parameters
• CPC Class Codes: H02M 3/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections

Abstract

A battery having a built-in controller that controls one or more functions of the battery is disclosed. The battery may, for example, control a charge or a discharge cycle of a battery, disconnect an electrochemical cell from the terminals of the battery in an emergency condition, provide electronic identification of cell characteristics or conditions, or provide a low remaining charge warning. The battery may be a single-cell battery, a universal single-cell battery, a multiple-cell battery or a multiple-cell hybrid battery. Each individual cell preferably has a built-in controller.

Claims

1. A single-cell battery comprising:

(a) a container including a positive terminal and a negative terminal;

(b) a single electrochemical cell disposed within said container, said cell having a positive electrode, a negative electrode and a cell voltage measured across said positive electrode and said negative electrode of said cell; and

(c) a controller electrically connected between said electrodes of said cell and said terminals of said container to create an output voltage measured across said positive terminal and said negative terminal of said container, said controller being adapted to monitor one or more of the physical parameters selected from the group of;

an internal impedance of said cell, and a hydrogen concentration, said controller being adapted to control the operation of said cell based upon said physical parameter.

2. The single-cell battery of claim 1, wherein said cell is a rechargeable cell, said controller being adapted to receive a charging current and to control said charging current to charge said cell.

3. The single-cell battery of claim 2, wherein said controller is adapted to receive said charging current from said terminals of said container.

4. The single-cell battery of claim 2, wherein said controller is adapted to control said charging current according to a sequence specific to said cell.

5. The single-cell battery of claim 1, wherein said controller further comprises a coil element, said controller being adapted to receive said charging current from said coil element.

6. The single-cell battery of claim 1, wherein said controller is adapted to detect a remaining charge of said cell, and to provide a signal when said remaining charge reaches a predetermined charge level.

7. The single-cell battery of claim 6, wherein said controller is adapted to provide said signal to an external device.

8. A battery comprising:

(a) a container including a positive terminal and a negative terminal;

(b) an electrochemical cell disposed within said container, said cell having a positive electrode, a negative electrode and a cell voltage measured across said positive electrode and said negative electrode of said cell; and

(c) a controller electrically connected between said electrodes of said cell and said terminals of said container to create an output voltage measured across said positive terminal and said negative terminal of said container, said controller being adapted to electronically disconnect said cell from said terminals of said container when said controller detects one or more of the following conditions;

an inverse polarity a short-circuit, an overcharge of said cell, a temperature of said cell exceeding a predetermined temperature, a gas pressure of said cell exceeding a predetermined pressure, and a hydrogen gas concentration exceeding a predetermined hydrogen gas concentration.

9. A battery comprising:

(a) a container including a positive terminal, a negative terminal and a periphery;

(b) at least one electrostatic microvalve disposed on a portion of said periphery of said container;

(c) an electrochemical cell disposed within said container, said cell having a positive electrode, a negative electrode and a cell voltage measured across said positive electrode and said negative electrode of said cell; and

(d) a controller electrically connected between said electrodes of said cell and said terminals of said container to create an output voltage measured across said positive terminal and said negative terminal of said container, said controller controlling said microvalve to control air flow into said container.

10. The battery of claim 9, wherein said controller is adapted to open said microvalve to allow air to diffuse into said container when air is needed for the battery to provide a required current drain.

11. The battery of claim 9, wherein said controller is adapted to close said microvalve to prevent air from diffusing into said container when an air concentration in said container is sufficient for the battery to provide a required current drain.

12. The battery of claim 9, further comprising a second microvalve disposed in a portion of said periphery of said container, said controller being adapted to control said microvalve and said second microvalve independently.

13. The battery of claim 12, wherein said microvalve has a first flow rate and said second microvalve has a second flow rate that is different than said first flow rate.

14. The battery of claim 9, wherein said controller is adapted to open said microvalve to allow oxygen to diffuse into said container.

15. The battery of claim 9, wherein said microvalve is part of an array of microvalves.

16. The battery of claim 15, wherein each microvalve of said array is digitally controlled.

17. The battery of claim 15, wherein each microvalve of said array is analog controlled.

18. The battery of claim 15, further comprising a second array of microvalves disposed in a portion of said periphery of said housing, said controller being adapted to control said array of microvalves and said second array of microvalves independently.

19. A battery comprising:

(a) a container including a positive terminal and a negative terminal;

(b) an electrochemical cell disposed within said container, said cell having a positive electrode, a negative electrode and a cell voltage measured across said positive electrode and said negative electrode of said cell; and

(c) a controller electrically connected between said electrodes of said cell and said terminals of said container to create an output voltage measured across said positive terminal and said negative terminal of said container, said controller being adapted to detect said cell voltage and an internal impedance of said cell to determine a remaining charge of said cell.

20. The battery of claim 19, wherein said controller provides a signal to one or more of the group selected from an external device, an external quality assurance test circuit and a register of said controller.

21. The battery of claim 19, wherein said controller provides an indication when said remaining charge reaches a predetermined charge level.

22. The battery of claim 19, wherein said controller includes an electronic identification of said remaining charge of said cell.

23. A battery comprising:

(a) a container including a positive terminal and a negative terminal;

(b) an electrochemical cell disposed within said container, said cell having a positive electrode, a negative electrode and a cell voltage measured across said positive electrode and said negative electrode of said cell; and

(c) a controller electrically connected between said electrodes of said cell and said terminals of said container to create an output voltage measured across said positive terminal and said negative terminal of said container, said controller including an electronic identification of said cell including at least one of the group selected from;

a type of said cell, a nominal voltage of said cell, a rated capacity of said cell, a peak current delivery capability of said cell, and an optimal current delivery capability of said cell.

24. A battery comprising:

(a) a container including a positive terminal, a negative terminal and a periphery;

(b) a first microvalve and a second microvalve, said first and second microvalves disposed on a portion of said periphery of said container;

(c) an electrochemical cell disposed within said container, said cell having a positive electrode, a negative electrode and a cell voltage measured across said positive electrode and said negative electrode of said cell; and

(d) a controller electrically connected between said electrodes of said cell and said terminals of said container to create an output voltage measured across said positive terminal and said negative terminal of said container, said controller being adapted to control said first microvalve and said second microvalve independently to control air flow into said container.