Passive cooling device for extending battery life

Details Passive cooling device for extending battery life Passive cooling device for extending battery life

1991-05-13

1992-12-22

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With heat exchange feature

165 53, H07M 1050

Patent

active

051733781

ABSTRACT:
A battery exposed to heating from incident sunlight is cooled by rejecting heat to air drawn through a chimney by the heating of at least portions of the chimney by the incident sunlight. The battery is placed within the chimney so that the air flow in the chimney passes around the battery, enabling heat to be transferred directly from the battery to the air. Air flow in the chimney is generated by sunlight incident on the exterior of the chimney, causing heating of air within at least a portion of the chimney to create a natural convective air flow within the chimney, with relatively cool outside ambient air being drawn in at one end of the chimney and heated air being exhausted out the other end of the chimney.

REFERENCES:
patent: 2385127 (1945-09-01), Carlile
patent: 4076074 (1978-02-01), Tompkins
patent: 4107402 (1978-08-01), Dougherty et al.
patent: 4329407 (1982-05-01), Gross et al.
patent: 4333517 (1982-06-01), Parro
patent: 4629622 (1986-12-01), Yonezu et al.
patent: 5035964 (1991-07-01), Levinson et al.

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