Thermoelectric cooler

Batteries: thermoelectric and photoelectric – Thermoelectric – Peltier effect device

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136204, 136224, 136237, H01L 3508

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active

054415764

ABSTRACT:
A thermoelectric heat pump which is resistant against thermal stresses incurred during thermal cycling of Thermal Cyclers or the like between cold and hot temperatures of about 0.degree. C. at a ramping rate up to about 1.degree. C. per second has improved joints between the thermoelements and electrical conductors which have low electrical resistance and which substantially reduce fractures during thermal cycling. The joints include a tin-silver-indium solder containing by weight about 95% tin, 3.5% silver, and 1.5% indium, or a tin-silver-cadmium solder containing by weight about 95.5% tin, 3.5% silver, and 1.0% cadmium. A robust nickel diffusion barrier between the joints and thermoelectric elements ends provides additional improvement against joint fracture.

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"The MJ Resaearch Notebook", vol. II, No. 16, Autumn, 1992, p. 1.
Leong, et al "Finite-Element Thermal Stress Analysis of a Thermoelectric Cooler" Third International Conference on the Thermoelectric Energy Conversion, UTA, Mar. 12-14, 1980, IEEE Catalog No. 80CH1546-1 Reg 5, pp. 86-91.
"Literature related to module strength" Tel Tec Report, 1980-1990, pp. 1-3.
"Thermocycler", MJ Research, Inc. Copyright 1989, pp. 1-3.

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