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Browse Prior Art Database

Connectorless Power Interface for Personal Computers

IP.com Disclosure Number: IPCOM000111365D
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Allard, DJ: AUTHOR [+2]

Abstract

Described is a hardware implementation to provide a connectorless power interface for portable personal computers (PCs) using a magnetically coupled power transfer technique, thereby eliminating the need for power connectors and cables. Discussed are the pros and cons for using this interface.

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This is the abbreviated version, containing approximately 63% of the total text.

Connectorless Power Interface for Personal Computers

      Described is a hardware implementation to provide a
connectorless power interface for portable personal computers (PCs)
using a magnetically coupled power transfer technique, thereby
eliminating the need for power connectors and cables.  Discussed are
the pros and cons for using this interface.

      Traditional mechanical connectors result in additional product
cost, opportunities for intermittent connection, and service costs.
For the portable PC application, the life and reliability of the
connection system is reduced due to the high number of connector
matings and due to the continuous exposure to the environment.  In
addition, the connection process can be somewhat of a nuisance since
it is a manual operation.  The proposed connectorless power interface
eliminates these problems.

      The connectorless power interface utilizes magnetic fields to
couple power from one unit to another.  In the case of the portable
PC, a non-mobile docking station contains a power supply that
converts wall AC power to magnetic fields.  The docking station may
be a larger unit with additional computer hardware or a small
brick-shaped power unit that is placed adjacent to the portable unit.
The portable PC unit converts the magnetic fields to DC power.  The
DC power is used to charge the batteries of the portable PC unit and
to operate the unit while it is in the docking station.  A
microswitch located in the d...