Pairing Method Based on Electric Current Synchronicity for Augmented Batteries

• US 20140152316A1
• Filed: 11/30/2012
• Published: 06/05/2014
• Est. Priority Date: 11/30/2012
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Morin, Philippe, Stanek, Ganymed
• Granted Patent: US 9,151,803 B2
• Time in Patent Office: Days
• US Class Current: 324/430
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 2010/4278 Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A plurality of augmented batteries each have internal communication circuitry and current monitoring circuitry allowing them to communicate current usage signatures with one another. Based on analysis of those respective signatures each augmented battery determines if it is “paired” with other batteries, by virtue of being installed in the same device. The augmented batteries use knowledge of pairing to control how they collectively behave to provide augmented functionality, such as alerting the user regarding the charge level within the batteries.

Claims

1. A method of paring a battery with an article characterized by a current usage signature, comprising the steps of:

employing a sensor disposed within the battery to generate a current usage signature for the battery;

employing a communication circuit disposed within the battery to receive said current usage signature from the article;

employing a processor disposed within the battery to compare the battery current usage signature with the article current usage signature; and

based on said comparing step, the processor selectively storing pairing data in a memory disposed within the battery to indicate that the battery and the article are paired.

2. The method of claim 1 wherein the article is a second battery.

3. The method of claim 1 wherein the article is a second battery that employs a second sensor disposed within the second battery to generate a second current usage signature.

4. The method of claim 3 wherein the article is a second battery that employs a second communication circuit disposed within the second battery to transmit the second current usage signature to the communication circuit of said battery.

5. The method of claim 1 wherein the article is a second battery that employs a second processor disposed within the second battery, the processor disposed within said battery and the second processor disposed within said second battery negotiating with each other through the communication circuit to place one of said batteries in a master role and to place the other of said batteries in a slave role.

6. The method of claim 1 wherein said communication circuit includes a wireless transceiver disposed within the battery and wherein the current usage signature is broadcast wirelessly using said transceiver.

7. The method of claim 1 wherein said current signature is generated by periodically sampling the current flow from said battery and storing the sampled current flow as digital data values in a memory disposed within the battery.

8. The method of claim 7 further comprising using the processor to convert the stored digital data values into a parametric representation that serves as said current usage signature.

9. The method of claim 1 further comprising providing to the user of a device into which the battery is installed an augmented service using components disposed within the battery, and using said pairing data to selectively alter the providing of said augmented service.

10. The method of claim 9 wherein said pairing data is used to selectively deactivate the augmented service.

11. The method of claim 1 wherein the article is a second battery and wherein the battery and the second battery each have components that provide an augmented service extending the functionality of a device into which the batteries are installed and wherein the battery and the second battery each independently store paring data to indicate whether the battery and the second battery are paired.

12. The method of claim 1 wherein the article is a second battery and wherein the battery and the second battery each have components capable of providing an augmented service extending the functionality of a device into which the batteries are installed and wherein the battery and the second battery communicate with each other to negotiate which of the battery and the second battery shall provide the augmented service.

13. A method of determining when two or more batteries are installed in the same device, comprising:

using a monitoring circuit within each of said two or more batteries to generate a current usage signature from each of said two or more batteries; and

comparing the current usage signatures of the respective two or more batteries and storing a record in at least one electronic storage memory device that identifies batteries having correlated current usage signatures as being installed in the same device.

14. An augmented battery comprising:

at least one electrochemical cell disposed within the battery and capable of holding an electrical charge;

an electrical condition monitor disposed within the battery, electrically coupled to said cell, and capable of detecting charge conditions within the cell and for generating an internal current usage signature;

a processor disposed within the battery and coupled to said charge monitor, the processor having associated memory disposed within the battery; and

a communication circuit disposed within the battery,

the processor being programmed to receive an external current usage signature and to compare said external current usage signature with said internal current usage signature and supplying a report message to said communication circuit reflecting whether the external current usage signature and said internal current usage signature are correlated.

15. The augmented battery of claim 14 wherein said electrical condition monitor comprises an internal resistance within the battery across which the voltage drop is monitored and supplied to the processor as a data value as a function of time.

16. The augmented battery of claim 15 further comprising an analog to digital convertor that produces said data value.

17. The augmented battery of claim 15 wherein said analog to digital convertor produces a 1-bit data value reflecting the on-off state of current flow within the battery as a function of time.

18. The augmented battery of claim 14 further comprising a motion sensor coupled to said processor and disposed within the battery to detect user interaction with a device into which the augmented battery is installed.

19. The augmented battery of claim 14 further comprising an annunciator coupled to said processor and disposed within the battery to provide an alert to the user of a device into which the augmented battery is installed based on analysis of conditions within the battery performed by said processor.

20. The augmented battery of claim 14 wherein said communication circuit includes a wireless radio frequency transceiver.