Browse Prior Art Database

Safety Shutter for the Battery Unit

IP.com Disclosure Number: IPCOM000105855D
Original Publication Date: 1993-Sep-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 4 page(s) / 65K

Publishing Venue

IBM

Related People

Kimura, Y: AUTHOR [+3]

Abstract

Disclosed is a safety shutter system for the battery unit which covers the terminals. The short circuit between battery terminals may cause various safety and reliability problems. In this shutter system, an insulator covers the terminal when not in use and opens it when in use automatically. The shutter system prevents short circuit problems to cover the battery terminal.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 76% of the total text.

Safety Shutter for the Battery Unit

      Disclosed is a safety shutter system for the battery unit which
covers the terminals.  The short circuit between battery terminals
may cause various safety and reliability problems.  In this shutter
system, an insulator covers the terminal when not in use and opens it
when in use automatically.  The shutter system prevents short circuit
problems to cover the battery terminal.

      Figs. 1 and 2 show the schematic diagram of the safety shutter
system for the battery unit.  The system consists of a shutter plate
and a spring (Figs. 1A and 2A).  The shutter will close when the
battery unit is removed from the equipment.  When the battery unit is
not in use, the spring pushes the plate and the plate closes the
negative/positive terminal or both terminals (Figs. 1B and 2B).  The
shutter opens to slide the battery units (Figs. 1C and 2C).  The
terminal or the projection on the equipment opens the shutter when
the battery unit is set in the equipment.

      A high energy density battery has been developed for high power
consuming applications to meet the demand of electronic systems with
the reduction of its physical size and longer lasting operation, but
it also increases the risk or energy hazard due to the terminal
short, in other words, an unexpectedly high rate of discharge.

      The terminal position and size of the battery unit are
important design items for small portable equipment.  When the
battery u...