Intelligent battery and method for providing an advance low batt

Details Intelligent battery and method for providing an advance low batt Intelligent battery and method for providing an advance low batt

1996-01-16

1998-02-24

Tso, Edward

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 48, H01M 1046, H01M 1048

Patent

active

057214824

ABSTRACT:
An intelligent battery having an advance low battery warning for a battery powered device is provided. The intelligent battery comprises a battery suitable for powering a battery powered device and a charge monitor circuit. The charge monitor circuit continuously measures the amount of electrical charge input and output from the battery. When the amount of charge remaining in the battery goes below a threshold amount, an advance low battery warning is generated, wherein the charge remaining in the battery is calculated by subtracting the amount of electrical charge output from the battery from the amount of electrical charge input into the battery. The low battery warning occurs independently of the output voltage of the battery such that an advance low battery warning may be provided for a battery that maintains a substantially constant output voltage until just prior to complete discharge. The circuit also includes an imminent shutdown warning circuit that measures the output voltage of the battery, and provides a battery shutdown warning when the output voltage drops below a shutdown threshold voltage. In a preferred embodiment, the battery powered device is a defibrillator/monitor, and the threshold amount is equal to a selected percent of the battery's capacity plus sufficient charge to provide a selected number of charges to a defibrillator.

REFERENCES:
patent: 4703247 (1987-10-01), Morioka
patent: 4775827 (1988-10-01), Ijntema et al.
patent: 4803416 (1989-02-01), Abiven et al.
patent: 5099210 (1992-03-01), Fortney et al.
patent: 5144218 (1992-09-01), Bosscha
patent: 5155428 (1992-10-01), Kang
patent: 5250893 (1993-10-01), Gambill et al.
patent: 5341503 (1994-08-01), Gladstein et al.
patent: 5345392 (1994-09-01), Mito et al.
Benchmarq Microelectronics, Inc., Benchmarq 1995 Data Book, "Gas Gauge IC", pp. 2-209--2-227.

Affiliated with

Also associated with

Rating

Intelligent battery and method for providing an advance low batt does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intelligent battery and method for providing an advance low batt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intelligent battery and method for providing an advance low batt will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1877022