Battery identification system

• US 6,014,008 A
• Filed: 01/22/1998
• Issued: 01/11/2000
• Est. Priority Date: 01/22/1998
• Status: Expired due to Term

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Miller, Brian D., Lee, Tina M., Nading, Fred P., Hartzell, Patrick D., Northcutt, John W.
• Primary Examiner(s): Tso, Edward H.
• Application Number:
  US09/012,122
• Time in Patent Office: 719 Days
• Field of Search: 320/106, 320/107, 320/110, 320/112, 320/FOR 101, 320/FOR 104, 320/DIG. 12
• US Class Current: 320/106
• 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

Abstract

The present invention entails a battery identification system to be utilized by cellular telephones, battery chargers, and other electrical devices for identification of the battery types employed within such devices. The battery identification system comprises a battery type identification circuit that includes one or more input switches that are coupled to a voltage divider network that is made up of a series of voltage divider segments. Each voltage divider segment is designed to produce a signal that is indicative of the on/off state of a particular input switch. To actuate the input switches, the employed battery is provided with one or more switch actuators, where the position and spacing of the switch actuators on the battery in effect uniquely identifies the battery type. Various switching and actuating configurations are contemplated, including mechanical, galvanic, magnetic, and optical systems.

Claims

1. A battery type identification system adapted to work in conjunction with a battery having one or more switch actuators associated therewith, comprising:

a) a battery type identification circuit adapted to mate with the one or more switch actuators associated with the battery for determining the type of battery and providing a coded output signal that is indicative of the battery type;

b) the battery type identification circuit including;

(i) one or more input switches adapted to mate with the one or more switch actuators associated with the battery;

(ii) a voltage divider network connected between a regulated voltage supply and a reference voltage;

(iii) the voltage divider network operatively connected to at least one input switch and including a primary resistor connected in series between the input switch and the regulated voltage; and

(iv) wherein the battery type identification circuit produces an output signal that is a function of the one or more switch actuators associated with the battery and which identifies the type of the battery.

2. The battery type identification system of claim 1 including a logic controller associated with the voltage divider network for receiving the coded output signal produced by the battery type identification circuit.

3. The battery type identification system of claim 1 wherein the battery type identification circuit includes a series of spaced-apart input switches adapted to mate with selected switch actuators associated with the battery;

and wherein the voltage divider network includes a plurality of individual voltage divider segments with each voltage divider segment connected to a respective input switch and including a primary resistor connected between the regulated voltage supply and the reference voltage.

4. The battery type identification system of claim 3 wherein the identification circuit includes a series of output signal lines connected to the respective voltage divider segments, each output signal line adapted to transmit a signal produced by a respective voltage divider segment.

5. The battery type identification system of claim 4 wherein the respective voltage divider segments collectively produce a binary code signal that is a function of a voltage value at a point between the reference voltage and the regulated voltage.

6. The battery type identification system of claim 4 including a logic controller coupled to the output signal lines extending from the respective voltage divider segments and wherein the logic controller is adapted to interpret the output signals received.

7. The battery type identification system of claim 1 wherein the battery having the one or more switch actuators forms a part of the battery type identification system.

8. The battery type identification system of claim 1 wherein the input switches of the identification circuit includes at least one mechanical switch that is moveable between open and closed positions.

9. The battery identification system of claim 1 wherein the one or more input switches of the identification circuit includes a galvanic contact that is adapted to mate with the one or more switch actuators associated with the battery.

10. The battery identification system of claim 1 wherein the one or more input switches of the identification circuit includes at least one magnetic switch that is adapted to be actuated by one of the switch actuators associated with the battery.

11. The battery identification system of claim 1 wherein the at least one input switch of the identification circuit includes at least one optical switch that is adapted to be actuated by one of the switch actuators associated with the battery.

12. The battery type identification system of claim 7 wherein the battery includes a main body having at least one protrusion extending therefrom and wherein the protrusion forms a switch actuator.

13. The battery type identification system of claim 7 wherein the position of the one or more switch actuators on the battery at least partially uniquely identifies the type of the battery.

14. The battery type identification system of claim 7 wherein the battery includes a series of spaced apart protrusion that form a series of spaced apart switch actuators, and wherein the spacing of the switch actuators uniquely identifies the type of the battery.

15. The battery type identification system of claim 14 wherein the switch actuators associated with the battery are operative to actuate the one or more input switches of the identification circuit which in turn produces a coded signal that uniquely identifies the type of the battery.

16. A battery type identification system comprising:

(a) a battery having a main body and one or more actuators formed on the main body;

(b) the one or more actuators being positioned on the main body such that the position of the one or more actuators uniquely identify the type of the battery; and

(c) a battery type identification circuit for mating with one or more of the actuators on the battery and for producing a battery type output signal that is a function of the position of the one or more actuators on the battery and which identifies the type of the battery.

17. The battery identification system of claim 16 wherein the battery includes a series of spaced apart actuators that uniquely identify the type of the battery based in part at least on the spacing of the actuators.

18. The battery identification system of claim 16 wherein the battery type identification circuit includes one or more spaced apart input switches adapted to mate with one or more actuators formed on the battery.

19. The battery type identification system of claim 18 wherein the identification circuit includes a voltage divider network operatively connected to the input switches, and wherein the voltage divider network produces an output signal that is a function of the mating of one or more particular actuators with one or more particular input switches.

20. The battery type identification system of claim 19 wherein the voltage divider network includes a series of voltage divider segments with each voltage divider segment connected to a respective input switch and to an output signal line that transmits an output signal that is a function of the on/off state of the particular input switch connected to the voltage divider.

21. A battery having a main body and one or more actuators formed on the main body;

and wherein the one or more actuators assume a configuration about the main body of the battery that identifies the battery as a certain type.

22. The battery of claim 21 wherein the one or more actuators includes one or more switch actuators that are operative to actuate one or more switches associated with a battery identification device.