Rechargeable battery pack, in particular for use with...

Details Rechargeable battery pack, in particular for use with... Rechargeable battery pack, in particular for use with...

2006-09-18

2009-08-04

Ullah, Akm E (Department: 2838)

Electricity: battery or capacitor charging or discharging

Means to identify cell or battery type

C320S114000

Reexamination Certificate

active

07570013

ABSTRACT:
A rechargeable battery pack (20), in particular, for use with electrical hand tool devices, comprises a first and a second charging connection (24, 26), and a third control connection (28), all three being connectable to a charging device (46) for producing a charging connection, and with a calculating means (30) which can be addressed via an interface circuit (32), wherein the interface circuit uses the third control connection (28). In order to prevent destruction of the rechargeable battery pack due to erroneous charging, a non-linear component (34) is disposed in the interface circuit (32) which, upon control of the interface circuit (32) by the charging device (46), can be distinguished from an NTC component, thereby permitting detection of the rechargeable battery type when the calculating means (30) provides no identification information in response to control by the charging device (46).

REFERENCES:
patent: 5256882 (1993-10-01), Miyasaka
patent: 6225783 (2001-05-01), Nagano et al.
patent: 6492792 (2002-12-01), Johnson et al.
patent: 6625477 (2003-09-01), Wakefield
patent: 2002/0117975 (2002-08-01), Yang
patent: 2005/0020304 (2005-01-01), Shinzaki
patent: 0 661 769 (1995-07-01), None
patent: 0 800 253 (1997-10-01), None

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