# US 9,882,250 B2 · Indicator circuit decoupled from a ground plane

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- Number: US 9,882,250 B2
- Document ID: US9882250B2
- Status: Granted
- Kind: B2
- Application number: 14/674,110
- Filed: 2015-03-31
- Published: 2015-12-03
- Granted: 2018-01-30
- Earliest claimed: 2014-05-30
- Assignees: Duracell U.S. Operations, Inc.
- Applicants: Duracell U.S. Operations, Inc.
- Inventors: Alistair Neil Chappelle; Jerome Alexander Martin Dilley; Calvin Christopher Giles; Konstantin Dimitrov Stefanov; Matthew Emmanual Milton Storkey; Jordan Todorov Bourilkov; Sergio Coronado Hortal; William Fitler Morris; Steven Jeffrey Specht
- Web page: https://patentgrep.com/patent/US9882250B2

## CPC

- H01M 10/488: {Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density}
- H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)}
- H02J 7/685: {using connection detecting circuits (H02J7/68 takes precedence)}
- H02J 7/80: including monitoring or indicating arrangements
- H01M 10/4257: {Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries}
- H01M 2010/4271: {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing}
- H02J 7/61: against overcharge
- H02J 7/62: against overcurrent
- H02J 7/63: against overdischarge
- H02J 7/82: Control of state of charge [SOC]
- H02J 7/84: Control of state of health [SOH]
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

The invention is directed towards an indicator circuit. The indicator circuit includes a ground plane; an antenna; a decoupler component; and an integrated circuit. The antenna includes at least one antenna trace; a first antenna terminal; and a second antenna terminal. The decoupler component includes a first decoupler component terminal and a second decoupler component terminal. The integrated circuit is electrically coupled to the first antenna terminal and the second antenna terminal. The integrated circuit is electrically coupled to the first decoupler component terminal. The second decoupler component terminal is electrically connected to the ground plane.

## Claims

### Claim 1

An indicator circuit comprising:
a cylindrical battery, the cylindrical battery comprising a positive terminal and a negative terminal;
a two symmetrical loop antenna that is out-of-phase, the antenna comprising at least one antenna trace, a first antenna terminal, and a second antenna terminal, wherein the antenna is wrapped around the cylindrical battery;
a decoupler component, the decoupler component comprising a first decoupler component terminal and a second decoupler component terminal; and
an integrated circuit;
wherein the integrated circuit is electrically coupled to the first antenna terminal and the second antenna terminal; the integrated circuit is electrically coupled to the positive terminal of the cylindrical battery; the integrated circuit is electrically coupled to the first decoupler component terminal; and the second decoupler component terminal is electrically connected to the negative terminal of the cylindrical battery.

### Claim 2 (depends on 1)

The indicator circuit of claim 1, wherein the decoupler component is selected from the group consisting of a resistor, an inductor, and any combination thereof.

### Claim 3 (depends on 1)

The indicator circuit of claim 1, the integrated circuit comprising an analog to digital converter and a communication circuit wherein the integrated circuit is configured to sense a condition of the cylindrical battery and signally communicate the condition to a reader.

### Claim 4 (depends on 3)

The indicator circuit of claim 3, wherein the condition of the cylindrical battery is chosen from the group consisting of over-discharge protection, over-charge protection, remaining capacity determination, voltage determination, cycle life determination, and power management.

### Claim 5 (depends on 1)

The indicator circuit of claim 1, wherein the integrated circuit further comprises a radio frequency identification chip or a near field communication chip.

### Claim 6 (depends on 1)

The indicator circuit of claim 1, the battery comprising a metal housing.