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IDENTIFICATION OF BATTERY POCKET TYPE IN AN EXCHANGEABLE MULTI POCKET CHARGER SYSTEM

IP.com Disclosure Number: IPCOM000007373D
Original Publication Date: 1995-Mar-01
Included in the Prior Art Database: 2002-Mar-20
Document File: 1 page(s) / 59K

Publishing Venue

Motorola

Related People

Joseph Patino: AUTHOR

Abstract

A previous patent (#5,184,059) teaches the use of a fixed element (capacitor, Cc) to further expand the battery capacity identification scheme. (Refer to figure below) This is accomplished by measuring not just the resistor divider voltage reached by the pull up resistor in the charger and the battery iden- tification resistor (Rc) in the battery, but also the time constant that is created by the battery identifi- cation resistor (Rc) and the fixed element (Cc).

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MOTOROLA Technical Developments Volume 24 March 1995

IDENTIFICATION OF BATTERY POCKET TYPE IN AN EXCHANGEABLE MULTI POCKET CHARGER SYSTEM

by Joseph Patitio

  A previous patent (#5,184,059) teaches the use of a fixed element (capacitor, Cc) to further expand the battery capacity identification scheme. (Refer to figure below) This is accomplished by measuring not just the resistor divider voltage reached by the pull up resistor in the charger and the battery iden- tification resistor (Rc) in the battery, but also the time constant that is created by the battery identifi- cation resistor (Rc) and the fixed element (Cc).

  Multi pocket chargers with interchangeable pock- ets are now beginning to be offered. As these charg- ers continue to increase in their sophistication, a logical outcome is that they will want to distinguish between charger pocket types to tinther maximize their charging regimes. Therefore an expansion of the above patent to include the interchangeability of the pockets with their fixed element (Cc) in an inter-

changeable multi pocket charger system is needed to address this development.

  The characteristic defining element (Cc) in the removable charger pocket is unique to that particu- lar battery pocket type, and will therefore distin- guish it from all other charger pocket types. This allows the charger to determine additional charging characteristic information for that pocket's battery, such as battery capacity (in the case of different capac-...