Apparatus and method for detecting missing or defective...

Details Apparatus and method for detecting missing or defective... Apparatus and method for detecting missing or defective...

2005-05-03

2005-05-03

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

C324S432000, C324S434000, C320S137000, C320S138000

Reexamination Certificate

active

06888354

ABSTRACT:
An apparatus and method for detecting battery removal, battery absence, and/or defective battery condition for use with battery charging and testing systems is provided. The apparatus includes a regulator, feedback module, controller, and detector module. The regulator and feedback module supply a regulated charging signal to a battery. The controller interrupts the feedback module so as to cause the regulator to suspend supplying the charging signal to the battery, which in turn, allows the charging signal to discharge for a predetermined period of time. During the predetermined period, the detector module detects whether the charging signal discharges below a predetermined threshold. When the charging signal discharges below the predetermined threshold, the detector module detects one or more conditions that indicate that the battery cannot be charged. These conditions include conditions that indicate that the battery is absent, missing, and/or defective.

REFERENCES:
patent: 6160381 (2000-12-01), Peterzell
patent: 6194869 (2001-02-01), Peterzell
patent: 6215198 (2001-04-01), Inada et al.
patent: 6452364 (2002-09-01), Saeki et al.
NFPA 20 Standard for the Installation of Stationary Pumps for Fire Protection, NFPA 1999 Edition. No month available.
Lead-Acid Fast-Charge IC, Texas Instruments Incorporated, Jun. 1999, pp. 1-16.

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