Fuel cell cooling plate

Details Fuel cell cooling plate Fuel cell cooling plate

1989-01-24

1990-09-11

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 36, H01M 802

Patent

active

049562452

ABSTRACT:
There is disclosed a fuel cell cooling plate for eliminating waste heat generated by operation of a fuel cell. The cooling plate consists of an inner substrate layer composed of a soft, deformable plastic or low elastic carbonaceous material, sandwiched between outer substrate layers of a strong gas-impermeable carbonaceous material, and a sealing material. The inner substrate is chased with grooves, which house metal cooling pipes for passage of the cooling medium. The soft, deformable, plastic or low elastic material of the inner substrate can be formed so that the grooves fit tightly around the cooling pipes, preventing formation of any air gaps between the pipes and the grooves. This permits nearly complete circumferential contact between the pipes and the grooves, thereby reducing thermal resistance associated with air gaps, and maintaining a high degree of heat transfer. Further, the plastic or low elastic material of the inner substrate layer can conform to thermal expansion and contraction of the cooling plate and pipes, reducing excessive wear over the lifetime of the cooling plate.

REFERENCES:
patent: 4233369 (1980-11-01), Breault et al.
patent: 4583583 (1986-04-01), Wittel

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