Battery powered electronic device for exchanging information with a battery mailbox

• US 5,929,764 A
• Filed: 10/15/1997
• Issued: 07/27/1999
• Est. Priority Date: 05/16/1995
• Status: Expired due to Fees

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Hewlett-Packard Company (HP Inc.)
• Inventors: Brink, Gregory D., Ochs, Dennis E., Andrews, Jonathan N., Benvegar, Carl E.
• Primary Examiner(s): Hofsass, Jeffery A.
• Assistant Examiner(s): TWEEL JR, JOHN ALEXANDER
• Application Number:
  US08/951,065
• Time in Patent Office: 650 Days
• Field of Search: 340/636, 320/125, 320/124, 320/131, 320/136, 320/137
• US Class Current: 340/636.1
• CPC Class Codes: A61N 1/3931 Protecting, e.g. back-up systems
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G01R 31/3842 combining voltage and current measurements
• 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: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

An electronic device, such as a defibrillator/heart monitor, monitors a battery having a memory for an error condition while the battery is operating the device. If the electronic device finds an error condition with the battery, it transmits error data to a mailbox located in the battery'"'"'s memory. Other electronic devices or battery support units, or even this electronic device at a later date, can read the error data in the mailbox and take an appropriate action. For example, the electronic device can read the mailbox and, if it finds error data placed there by itself, another electronic device, or a battery support unit, enables an indicator, such as an indicator that informs a user that maintenance needs to be performed on the battery.

Claims

1. A method in an electronic device operated by a battery having memory, said electronic device comprising a processor and device circuitry, said method comprising the steps of:

monitoring said battery for an error condition while said battery is operating said device, wherein the error condition is not present if a first event occurs that indicates that the battery is discharged and needs to be recharged, and wherein the error condition is present if an event other than the first event occurs that indicates a fault with the battery that may impact its future performance;

detecting said error condition in said battery;

transmitting error data to a mailbox located in said memory of said battery, responsive to detecting said error condition;

reading second error data in said mailbox, wherein said second error data was placed in said mailbox by a battery support unit which tested said battery or by a second electronic device which used said battery; and

enabling an indicator in response to said reading said second error data.

2. The method of claim 1, wherein said indicator instructs a user to perform maintenance on said battery, wherein maintenance is an operation performed on the battery, outside of a single charging operation, intended to prolong the useful life of the battery.

3. An electronic device operated by a battery having memory, said electronic device comprising:

a processor further comprising battery monitor logic;

device circuitry connected to said processor;

wherein said battery monitor logic;

monitors said battery for an error condition, wherein the error condition is not present if a first event occurs that indicates that the battery is discharged and needs to be recharged, and wherein the error condition is present if an event other than the first event occurs that indicates a fault with the battery that may impact its future performance;

detects an error condition in said battery;

transmits error data to a mailbox located in said memory of said battery, responsive to detecting said error condition;

reads second error data in said mailbox, wherein said second error data was placed in said mailbox by a battery support unit which tested said battery or by a second electronic device which used said battery; and

enables an indicator in response to said reading said second error data, wherein said indicator instructs a user to perform maintenance on said battery, wherein maintenance is an operation performed on the battery, outside of a single charging operation, intended to prolong the useful life of the battery.

5. The electronic device of claim 3, wherein said electronic device is a defibrillator.

4. An electronic device operated by a battery having memory, said electronic device comprising:

a processor further comprising battery monitor logic;

device circuitry connected to said processor;

wherein said battery monitor logic;

monitors said battery for an error condition, wherein the error condition is not present if a first event occurs that indicates that the battery is discharged and needs to be recharged, and wherein the error condition is present if an event other than the first event occurs that indicates a fault with the battery that may impact its future performance;

detects an error condition in said battery;

transmits error data to a mailbox located in said memory of said battery, responsive to detecting said error condition;

reads an indication of remaining capacity from said battery memory;

measures a voltage level of said battery;

compares said indication of remaining capacity with said voltage level of said battery; and

determines the voltage level of the battery is lower than expected based on the indication of remaining capacity, thereby resulting in an inadequate low battery warning event that indicates a fault with the battery that may impact its future performance.

6. A method in an electronic device operated by a battery having memory, said electronic device comprising a processor and device circuitry, said method comprising the steps of:

reading error data in a mailbox located in said memory of said battery, wherein said error data was placed in said mailbox by a battery support unit which tested said battery; and

enabling an indicator in response to said reading said error data.

7. The method of claim 6, wherein said indicator instructs a user to perform maintenance on said battery, wherein maintenance is an operation performed on the battery, outside of a single charging operation, intended to prolong the useful life of the battery.

8. The method of claim 6, wherein said error data indicates a fault with the battery that may impact its future performance and not that the battery is discharged and needs to be recharged.

9. A method in an electronic device operated by a battery having memory, said electronic device comprising a processor and device circuitry, said method comprising the steps of:

monitoring said battery for an error condition while said battery is operating said device, wherein the error condition is not present if a first event occurs that indicates that the battery is discharged and needs to be recharged, and wherein the error condition is present if an event other than the first event occurs that indicates a fault with the battery that may impact its future performance;

detecting said error condition in said battery;

transmitting error data to a mailbox located in said memory of said battery, responsive to detecting said error condition;

reading an indication of remaining capacity from said battery memory;

wherein said monitoring step further comprises the steps of;

measuring a voltage level of said battery;

comparing said indication of remaining capacity with said voltage level of said battery; and

determining the voltage level of the battery is lower than expected based on the indication of remaining capacity, thereby resulting in an inadequate low battery warning event that indicates a fault with the battery that may impact its future performance.

10. An electronic device operated by a battery having memory, said electronic device comprising:

a processor further comprising battery monitor logic;

device circuitry connected to said processor;

wherein said battery monitor logic;

reads error data in a mailbox located in said memory of said battery, wherein said error data was placed in said mailbox by a battery support unit which tested said battery; and

enables an indicator in response to said reading said error data.

11. The electronic device of claim 10, wherein said indicator instructs a user to perform maintenance on said battery, wherein maintenance is an operation performed on the battery, outside of a single charging operation, intended to prolong the useful life of the battery.

12. The electronic device of claim 11, wherein said error data indicates a fault with the battery that may impact its future performance and not that the battery is discharged and needs to be recharged.

13. The electronic device of claim 10, wherein said battery is removable or disconnectable from said electronic device.