Indicator circuit decoupled from a ground plane

• US 9,882,250 B2
• Filed: 03/31/2015
• Issued: 01/30/2018
• Est. Priority Date: 05/30/2014
• Status: Active Grant

• Current Assignee: Duracell U.S. Operations, Inc. (Berkshire Hathaway Incorporated)
• Original Assignee: Duracell U.S. Operations, Inc. (Berkshire Hathaway Incorporated)
• Inventors: Chappelle, Alistair Neil, Dilley, Jerome Alexander Martin, Giles, Calvin Christopher, Stefanov, Konstantin Dimitrov, Storkey, Matthew Emmanual Milton, Bourilkov, Jordan Todorov, Coronado Hortal, Sergio, Morris, William Fitler, Specht, Steven Jeffrey
• Primary Examiner(s): D'Aniello, Nicholas P
• Application Number:
  US14/674,110
• Publication Number:
  US 20150349391A1
• Time in Patent Office: 1,036 Days
• 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 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: 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
• CPC Class Codes: H01M 2010/4271 Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: H02J 7/00302 Overcharge protection
• CPC Class Codes: H02J 7/00304 Overcurrent protection
• CPC Class Codes: H02J 7/00306 Overdischarge protection
• CPC Class Codes: H02J 7/0036 using connection detecting circuits H02J7/0034 takes precedence
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/005 Detection of state of health [SOH]
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

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

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.

2. 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.

3. 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.

4. 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.

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

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