Identification arrangement and method

• US 6,112,105 A
• Filed: 10/27/1998
• Issued: 08/29/2000
• Est. Priority Date: 10/28/1997
• Status: Expired due to Term

• Current Assignee: Optis Wireless Technology, LLC (Brevet Capital)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Olsson, Jan Evert Torbjorn
• Primary Examiner(s): Chin, Wellington
• Assistant Examiner(s): Nguyen, Simon
• Application Number:
  US09/179,269
• Time in Patent Office: 672 Days
• Field of Search: 455/572, 455/573, 455/38.3, 455/571, 455/127, 455/181.1, 455/574, 455/343, 455/76, 320/15, 320/43, 320/2, 320/17, 320/48
• US Class Current: 455/572
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• 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: H01M 6/5066 Type recognition
• CPC Class Codes: H02J 7/00038 using passive battery identification means, e.g. resistors or capacitors identification by mechanical connections H02J7/0045
• 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

The invention provides a battery identification arrangement, a battery equipment (120) suitable for identification and a battery identification method for implementation in an electronic equipment (110) such as a mobile station or a charger with a battery (13). The present invention also relates to a method to measure the temperature of a battery (13) connected to an electronic equipment (110). The battery identification arrangement includes both a measurement circuit (1) of the electronic equipment (110) and a battery circuit (14) of a battery equipment (120). On identifying, means in the measurement circuit (1) measure at least one identification voltage (Vid) which is generated by dividing a battery voltage (Vbat) into a division ratio by means of in series connected resistors (R1, R2) connected to ground (12). The resistors (R1, R2) are connected to the battery (13) only during measurement of the identification voltage (Vid) and the battery voltage (Vbat).

Claims

1. A portable radio communication equipment incorporating a battery identification apparatus, said battery identification apparatus comprising:

a battery;

a battery circuit coupled to the battery;

a measurement circuit, coupled to the battery and the battery circuit, including a controller for measuring a battery voltage during a first predetermined time period and for measuring a battery identification voltage during a second predetermined time period, said controller is operable to identify a predetermined type of battery using the measured battery voltage and the measured battery identification voltage;

said battery circuit further including at least one first switch for disconnecting the battery from the battery circuit after identifying the predetermined type of battery; and

said measurement circuit further including a second switch for disconnecting the battery from the controller after identifying the predetermined type of battery.

2. The portable radio communication equipment of claim 1, wherein said measurement circuit further includes a current generator for enabling a determination of a temperature of the battery.

3. The portable radio communication equipment of claim 1, wherein said battery circuit further includes at least one time delay controller for controlling the at least one first switch.

4. The portable radio communication equipment of claim 3, wherein each of said at least one time delay controller further includes a selected one of a capacitor and an inverter circuit.

5. The portable radio communication equipment of claim 3, wherein said at least one time delay controller operates to close the at least one first switch and said controller operates to close the second switch when the controller measures the battery voltage.

6. The portable radio communication equipment of claim 3, wherein said at least one time delay controller operates to close the at least one first switch and said controller operates to open the second switch when the controller measures the battery identification voltage.

7. The portable radio communication equipment of claim 3, wherein said at least one time delay controller operates to open the at least one first switch and said controller operates to open said second switch after the controller identifies the predetermined type of battery.

8. The portable radio communication equipment of claim 1, wherein said battery circuit further includes a combination of resistors coupled to the at least one first switch for forming the battery identification voltage when the battery voltage is applied thereto.

9. The portable radio communication equipment of claim 8, wherein said combination of resistors further includes a first resistor and a second resistor connected in series to one another.

10. The portable radio communication equipment of claim 1, further comprising:

a battery voltage connector for connecting the measurement circuit to the battery and the battery circuit;

a measurement and control connector for connecting the measurement circuit to the battery circuit; and

a ground connector for connecting the measurement circuit to the battery circuit.

11. A method for determining a predetermined type of battery, said method comprising the steps of:

coupling a battery circuit to a battery by way of at least one first switch;

coupling a measurement circuit to the battery and the battery circuit by way of a second switch;

measuring a battery voltage during a first predetermined time period within a controller of the measurement circuit;

measuring a battery identification voltage during a second predetermined time period within the controller of the measurement circuit;

identifying the predetermined type of battery using the measured battery voltage and the measured battery identification voltage; and

disconnecting the battery from the battery circuit and the measurement circuit after identifying the predetermined type of battery.

12. The method of claim 11, further comprising the step of enabling a determination of a temperature of the battery.

13. The method of claim 11, wherein said step of measuring the battery identification voltage further includes applying the battery voltage to a combination of resistors to form the battery identification voltage.

14. The method of claim 11, wherein said step of measuring the battery voltage further includes controlling at least one time delay controller of the battery circuit to close the at least one first switch, and controlling the controller of the measurement circuit to close the second switch.

15. The method of claim 11, wherein said step of measuring the battery identification voltage further includes controlling at least one time delay controller of the battery circuit to close the at least one first switch, and controlling the controller of the measurement circuit to open the second switch.

16. The method of claim 11, wherein said step of disconnecting the battery from the battery circuit and the measurement circuit further includes controlling at least one time delay controller of the battery circuit to open the at least one first switch, and controlling the controller of the measurement circuit to open the second switch.

17. The method of claim 11, wherein said steps of coupling further includes the steps of:

connecting the measurement circuit to the battery and the battery circuit using a battery voltage connector;

connecting the measurement circuit to the battery circuit using a measurement and control connector; and

connecting the measurement circuit to the battery circuit using a ground connector.

18. A battery identification apparatus comprising:

a battery;

a battery circuit coupled to the battery;

a measurement circuit, coupled to the battery and the battery circuit, including a controller for measuring a battery voltage during a first predetermined time period and for measuring a battery identification voltage during a second predetermined time period, said controller is operable to identify a predetermined type of battery using the measured battery voltage and the measured battery identification voltage;

said battery circuit further including at least one first switch for disconnecting the battery from the battery circuit after identifying the predetermined type of battery; and

said measurement circuit further including a second switch for disconnecting the battery from the controller after identifying the predetermined type of battery.

19. The battery identification of claim 18, wherein said measurement circuit further includes a current generator for enabling a determination of a temperature of the battery.

20. The battery identification apparatus of claim 18, wherein said battery circuit further includes at least one time delay controller for controlling the at least one first switch.

21. The battery identification apparatus of claim 20, wherein each of said at least one time delay controller further includes a selected one of a capacitor and an inverter circuit.

22. The battery identification apparatus of claim 20, wherein said at least one time delay controller operates to close the at least one first switch and said controller operates to open the second switch when the controller measures the battery identification voltage.

23. The battery identification apparatus of claim 20, wherein said at least one time delay controller operates to close the at least one first switch and said controller operates to close the second switch when the controller measures the battery voltage.

24. The battery identification apparatus of claim 20, wherein said at least one time delay controller operates to open the at least one first switch and said controller operates to open said second switch after the controller identifies the predetermined type of battery.

25. The battery identification apparatus of claim 18, wherein said battery circuit further includes a combination of resistors coupled to the at least one first switch for forming the battery identification voltage when the battery voltage is applied thereto.

26. The battery identification apparatus of claim 25, wherein said combination of resistors further includes a first resistor and a second resistor connected in series to one another.

27. The battery identification apparatus of claim 18, further comprising:

a battery voltage connector for connecting the measurement circuit to the battery and the battery circuit;

a measurement and control connector for connecting the measurement circuit to the battery circuit; and

a ground connector for connecting the measurement circuit to the battery circuit.