Self warming low cost tactical electronics battery

Details Self warming low cost tactical electronics battery Self warming low cost tactical electronics battery

1997-05-02

1998-11-10

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

With nonbattery electrical component electrically connected...

429 62, H01M 1050

Patent

active

058341315

ABSTRACT:
A self-warming battery for use in tactical electronics systems, having a housing containing one or more commercially available alkaline manganese dioxide battery cells, a temperature sensor disposed adjacent to the battery cells for monitoring the temperature thereof, load resistors disposed adjacent to the battery cells for cell warming, and a battery self-warming circuit disposed in the housing. The battery self-warming circuit is coupled to the battery cells and the temperature sensor, and selectively causes current flow through the battery cells in an initializing mode when the temperature sensor detects that the battery cells are below a predetermined temperature. The battery self-warming circuit also selectively operates one or more resistors disposed adjacent to the battery cells, the resistors being powered by and warming the battery cells, in a warming mode, to a setpoint temperature at which the battery cell's power delivery capability is substantially increased over the battery cell's power delivery capability when the battery cells are near the predetermined temperature; whereby the initializing mode and the warming mode enable the battery to be used in substantially less than an hour, and in extremely cold ambient environments in which alkaline manganese dioxide cells would not otherwise be capable of performing at required current and/or power delivery rates.

REFERENCES:
patent: 5218834 (1993-06-01), Reher et al.
patent: 5252411 (1993-10-01), Yokokawa et al.
patent: 5480734 (1996-01-01), Schulz et al.
patent: 5508126 (1996-04-01), Braun
patent: 5622789 (1997-04-01), Young
patent: 5645949 (1997-07-01), Young

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