System for displaying a status condition of a battery

• US 5,982,147 A
• Filed: 01/15/1998
• Issued: 11/09/1999
• Est. Priority Date: 01/15/1998
• Status: Expired due to Term

• Current Assignee: Round Rock Research LLC
• Original Assignee: Micro Electronics Incorporated
• Inventors: Anderson, Eric D.
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): LUK, LAWRENCE W
• Application Number:
  US09/007,368
• Time in Patent Office: 663 Days
• Field of Search: 320/132, 320/130, 320/149, 320/128
• US Class Current: 320/132
• CPC Class Codes: G01R 31/371 with remote indication, e.g. on external chargers
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A system for displaying a status condition of a smart battery. The system includes: a charging unit for receiving and charging the smart battery; a first data bus, located within the charging unit and coupled to a microprocessor located within the smart battery; a bus interface for coupling the first data bus to a second data bus; a computer having the second data bus therein, the computer further including a central processing unit, coupled to the second data bus, for receiving data from the smart battery, and a display screen, coupled to the central processing unit, for displaying the status condition of the smart battery, wherein the charging unit is external to the computer.

Claims

1. A system for displaying a status condition of a smart battery, comprising:

a stand-alone charging unit which receives and charges the smart battery;

a processor located in and configured to control the charging unit in response to data received from the smart battery;

a first data bus, located within the charging unit and coupled to a processor located within the smart battery;

a bus interface which couples the first data bus to a second data bus;

a computer having the second data bus therein, the computer further including a central processing unit, coupled to the second data bus, which receives data representative of a status of the smart battery; and

a display screen, coupled to the central processing unit, which displays the status condition of the smart battery.

2. The system of claim 1 wherein the first and second data buses are system management buses.

3. The system of claim 2 wherein the bus interface is a two-wire system management bus interface.

4. The system of claim 1 wherein the charging unit is a port replicator having a charging bay for receiving and charging the smart battery.

5. The system of claim 1 wherein the central processing unit executes a software program for interrogating the smart battery and processing data received from the smart battery.

6. The system of claim 5 wherein the software program determines the status condition of the smart battery.

7. The system of claim 6 wherein the status condition is chosen from a group comprising:

a percentage charge on the smart battery relative to a fully-charged state;

a time required to fully charge the smart battery;

a time value corresponding to the useful life of the smart battery in its currently charged state;

a charge current value for charging the smart battery; and

a charge voltage value for charging the smart battery.

8. The system of claim 1 wherein said computer is a portable computer.

23. The system of claim 6 wherein said information is selected from a group comprising:

a percentage charge on the smart battery relative to a fully-charged state;

a time required to fully charge the smart battery;

a time value corresponding to the useful life of the smart battery in its currently charged state for a specified operation;

a current amplitude value for charging the smart battery; and

a voltage amplitude value for charging the smart battery.

9. A stand-alone smart battery charger comprising:

a stand-alone housing having a charging bay therein which receives and holds a smart battery;

a charging circuit, located within the housing, which charges the smart battery;

a processor located in and configured to control the charging circuit in response to data received from the smart battery

a first data bus, located within the housing, which provides data communications to and from the processor when the smart battery is being charged by the charging unit; and

an interface port, coupled to the housing, which provides connectivity between the first data bus and a second data bus, located within a computer configured to determine a status of the smart battery and to provide the status data to a display unit.

10. The smart battery charger of claim 9 wherein the first data bus is a first system management bus and the second data bus is a second system management bus.

11. The smart battery charger of claim 10 further comprising a system management bus interface, coupled to the interface port, so as to provide connectivity between the first and second system management buses.

12. The smart battery charger of claim 11 wherein the central processing unit executes a software program for interrogating the smart battery and processing received data from the smart battery.

13. The smart battery charger of claim 12 wherein the software program determines the status condition of the smart battery.

14. The smart battery charger of claim 13 wherein the status condition is chosen from a group comprising:

a percentage charge on the smart battery relative to a fully-charged state;

a time required to fully charge the smart battery;

a time value corresponding to the useful life of the smart battery in its currently charged state for a specified operation;

a current amplitude value for charging the smart battery; and

a voltage amplitude value for charging the smart battery.

15. The smart battery charger of claim 9 wherein said computer is a portable computer.

16. A system for providing information, related to a smart battery being charged in a smart battery charger, to a user, comprising:

means for electrically coupling a microprocessor within the smart battery to a central processing unit of a computer, wherein the smart battery charger is a stand alone unit and is external to the computer;

means for executing a software program which interrogates the smart battery in order to obtain information related to the smart battery; and

means for providing said information to the user in a specified format.

17. The system of claim 16 wherein said means for electrically coupling comprises means for providing a system management bus interface which couples a first system management bus within the smart battery charger to a second system management bus within the computer.

18. The system of claim 16 wherein said means for providing said information comprises means for displaying said information in a graphical format on a display screen of said computer.

19. The system of claim 16 wherein said means for providing said information comprises means for sending an audio message to the user via a speaker system coupled to the computer.

20. The system of claim 16 wherein said information is selected from a group comprising:

a percentage charge on the smart battery relative to a fully-charged state;

a time required to fully charge the smart battery;

a time value corresponding to the useful life of the smart battery in its currently charged state for a specified operation;

a current amplitude value for charging the smart battery; and

a voltage amplitude value for charging the smart battery.

21. A system for displaying a status condition of a smart battery being charged by a smart battery charger, comprising:

means for transmitting data from the smart battery to a computer, wherein the smart battery charger is a stand alone unit and is external to the computer;

means for processing said data in accordance with a software program being executed by a central processing unit within the computer; and

means for displaying information obtained as a result of processing said data on a display screen coupled to the computer.

22. The system of claim 21 further comprising means for providing a system management bus interface which couples a first system management bus within the smart battery charger to a second system management bus within the computer.

24. A system for displaying a status condition of a smart battery being charged by a smart battery charger, which is external to a computer, on a display screen of the computer, comprising:

means for providing a system management bus interface which couples a first system management bus within the smart battery charger, which charger is a stand alone unit to a second system management bus within the computer, wherein the first system management bus is coupled to a first microprocessor within the smart battery and the second system management bus is coupled to a central processing unit within the computer;

means for transmitting data from the microprocessor of the smart battery to the central processing unit of the computer;

means for processing said data in accordance with a software program being executed by the central processing unit; and

means for displaying information obtained as a result of processing said data on the display screen of the computer, wherein said information is selected from a group comprising;

a percentage charge on the smart battery relative to a fully-charged state;

a time required to fully charge the smart battery;

a time value corresponding to the useful life of the smart battery in its currently charged state for a specified operation;

a current amplitude value for charging the smart battery; and

a voltage amplitude value for charging the smart battery.