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Intelligent Battery Charging Based on Time and History

IP.com Disclosure Number: IPCOM000127572D
Publication Date: 2005-Sep-02
Document File: 3 page(s) / 28K

Publishing Venue

The IP.com Prior Art Database

Related People

Christopher MacGregor: INVENTOR

Abstract

A battery charging system that takes into account the time of day and patterns of use/non-use that have been recorded locally. In other words, the system has access to a time-of-day & date clock, and can record when the battery is: 1. in use (being discharged) 2. idle (stand-by power draw only) 3. sitting on the charger Given this information, the system automatically decides when to charge the battery and when to not charge it, even if it is on the charger, and potentially even when to artificially discharge it. Consider a cordless phone with a NiCd or NiMH battery, for which charge/discharge patterns have a significant effect on battery life and performance. The battery charging system typically either: a) continuously charges (or trickle-charges) the battery whenever it (the phone) is on the charger, or b) starts charging whenever the battery (or phone) is on the charger and stops (or switches to a trickle charge) when the charger detects that the battery is fully charged. Either way, a meticulous and well-informed consumer can significantly improve battery life/performance by careful consideration of when the phone is and is not placed on the charger vs. when it is used. However, this is inconvenient, and the average consumer has neither the information nor the inclination to go to such lengths, and consequently will experience inferior battery performance and life. This may sell more batteries (though not necessarily Sony batteries!), but a feature that avoids all this would sell more phones. And a phone with caller-ID already has access to date/time information.

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                                                                                                                                                                Sony Corporation

                                                                                                                                                                Sony Electronics Inc.

                                                                                                                                                                IPD Case #50U7099.00

Title:

Intelligent

Battery

Charging Based on Time and History

Description of Invention:

A battery charging system that takes into account the time of day and patterns of use/non-use that have been recorded locally.  In other words, the system has access to a time-of-day & date clock, and can record when the battery is:

1. in use (being discharged)

2. idle (stand-by power draw only)

3. sitting on the charger

Given this information, the system automatically decides when to charge the battery and when to not charge it, even if it is on the charger, and potentially even when to artificially discharge it.
Consider a cordless phone with a NiCd or NiMH battery, for which charge/discharge patterns have a significant effect on battery life and performance.  The battery charging system typically either: a) continuously charges (or trickle-charges) the battery whenever it (the phone) is on the charger, or b) starts charging whenever the battery (or phone) is on the charger and stops (or switches to a trickle charge) when the charger detects that the battery is fully charged.  Either way, a meticulous and well-informed consumer can significantly improve battery life/performance by careful consideration of when the phone is and is not placed on the charger vs. when it is used.  However, this is inconvenient, and the average consumer has neither the information nor the inclination to go to such lengths, and consequently will experience inferior battery performance and life.  This may sell more batteries (though not necessarily Sony batteries!), but a feature that avoids all this would sell more phones.  And a phone with caller-ID already has access to date/time information.

Inventor:

Christopher MacGregor

Invention Disclosure:

Consider a cordless phone with a NiCd or NiMH battery, for which charge/discharge patterns have a significant effect on battery life and performance.  The battery charging system typically either: continuously charges (or trickle-charges) the battery whenever it (the phone) is on the charger, or starts charging whenever the battery (or phone) is on the charger and stops (or switches to a trickle charge) when the charger detects that the battery is fully charged.  Either way, a meticulous and well-informed consumer can significantly improve battery life/performance by careful consideration of when the phone is and i...