System for recognizing and managing electrochemical cells

• US 5,546,317 A
• Filed: 05/05/1994
• Issued: 08/13/1996
• Est. Priority Date: 05/06/1993
• Status: Expired due to Term

• Current Assignee: Saft Finance Sarl (Total Se)
• Original Assignee: Alcatel-Lucent USA, Inc. (Nokia Corporation)
• Inventors: Andrieu, Xavier
• Primary Examiner(s): Voeltz, Emanuel T.
• Assistant Examiner(s): PEESO, THOMAS R
• Time in patent office: 831 Days
• Field of Search: 364/481, 364/483, 324/427, 324/430, 324/433
• US Class Current: 702/63
• CPC Class Codes: G01R 19/16542 for batteries charge condition monitoring in G01R31/36
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. of voltage sensing terminals H01M50/569
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention provides a system for recognizing and managing electrochemical cells connected to an application, the system being characterized by the fact that it comprises an electronic memory associated with the cells, and circuitry for reading from the memory and writing in the memory, the read write circuitry being placed in the application, the electronic memory comprising a non-erasable first portion containing information enabling the cell to be identified, and a second portion which may be modified or erased, and which contains information about the operation and the state of the cell.

Claims

1. A system for managing the use of a battery connected to a device, said battery including at least one electrochemical cell, said system comprising:

an electronic memory incorporated in said battery, said electronic memory comprising a non-erasable first portion containing information identifying said battery, with at least some of said information being written by a user of said battery, and a second portion which may be modified or erased and which contains information about the operation and the state of said battery,

read means for reading from said memory and write means for writing in said memory, and

circuitry in said device for managing the use of said battery in accordance with information about said cell read from said cell, and said system.

2. A system according to claim 1, wherein said first portion of the memory contains data written by a manufacturer of said cell.

3. A system according to claim 1, wherein said first portion of the memory contains data written by a user of said cell.

4. A system according to claim 1, wherein said first portion of the memory of said electrochemical cell contains at least one item of data chosen from the following items of data:

type of the electrochemical couple;

nominal voltage;

nominal capacity;

rechargeability;

maximum and minimum voltage thresholds;

self-discharge;

reference of the product; and

name of the manufacturer.

5. A system according to claim 1, wherein said second portion of the memory of said electrochemical cell contains at least one item of data chosen from the following items of data:

instantaneous capacity;

updated nominal capacity; and

cumulative discharged capacity.

6. A system according to claim 1, wherein said read means enable the device to become informed of the data contained in said memory and to adapt the operation of the device to the conditions of the electrochemical cell.

7. A system according to claim 1, wherein said write means enable the device to modify the data contained in said second portion of the memory, and to write additional data therein.

8. A system according to claim 1, wherein said device is a mobile load that consumes current supplied by said electrochemical cell.

9. A system according to claim 1, wherein said device is a charger and said electrochemical cell is rechargeable.