Battery thermal control system and method

Details Battery thermal control system and method Battery thermal control system and method

1992-02-18

1993-06-01

Chaudhuri, Olik

Chemistry: electrical current producing apparatus, product, and

With control means responsive to battery condition sensing...

Temperature control

429 61, 429120, H01M 1050

Patent

active

052158349

ABSTRACT:
A battery thermal control system and method is provided which selectively heats or cools a storage battery in accordance with the battery temperature and state of charge. The thermal control system includes a battery housing having an internal airspace between the battery and the housing which extends between two openings in the battery housing, a reversible fan configured to generate an airstream along the airspace, a temperature sensor mounted to detect the temperature of the battery, and a control circuit for monitoring battery temperature and voltage and for controlling the operation of the fan. Battery state of charge is approximated by measuring battery voltage and monitored to prevent excessive battery discharge by the thermal control system. When the battery voltage exceeds a predetermined voltage and the battery temperature is outside of a predetermined range of suitable operating and storage temperatures, the thermal control system operates the fan to heat or cool the battery, as needed.

REFERENCES:
patent: 4468440 (1984-08-01), Evjen
patent: 5141826 (1992-08-01), Bohm et al.

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