Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – For battery pack
Patent
1997-07-01
1998-11-10
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Cell or battery charger structure
For battery pack
320128, 320DIG13, 320134, 320150, 320154, 307 66, 361104, 361103, 361106, H02J 700
Patent
active
058349219
ABSTRACT:
A safety device for a portable battery-powered electric apparatus having a battery unit with one or more battery cells for supplying power to electric circuitry in the apparatus. The apparatus is connectable to a charging device for charging the battery unit while maintaining the supply of power to the apparatus. The safety device has a first fuse device connected between the battery unit and a first terminal of the apparatus for receiving charging current from the charging device, and a second fuse device connected between the battery unit and a second terminal of the apparatus for supplying power to electric circuitry in the apparatus. The fuse devices are operatively independent of each other, particularly in that the second fuse device maintains the electric connection between the battery unit and the electric circuitry in the apparatus, even when or if the first fuse device releases or opens in response to an undesired condition in the charging device.
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Frannhagen Bjorn
Mercke Johan
Shin K.
Telefonaktiebolaget LM Ericsson
Wong Peter S.
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