Thermoelectrical module used for thermoelectrical elements comprises alternating p-type and n-type thermoelectrical elements with electrodes on their surfaces, heat exchange plates and coating film of insulating material

摘要

A thermoelectrical module with improved tenacity, heat exchange efficiency, moisture resistance and reliability comprises alternating p-type and n-type thermoelectrical elements with a coating film of insulating material on the upper surface. A thermoelectrical module comprises alternating p-type and n-type thermoelectrical elements, electrodes on their upper and lower surfaces, heat exchange plates on each side, a coating film of insulating material on the upper surface and defined space between neighboring elements. An Independent claim is included for the formation of a coating film on a thermoelectrical element by reacting, at 160-230 deg C and 10-2 to 10-5 Torr, an acid anhydride vaporized at 160-180 deg C and a diamine vaporized at 150-170 deg C to give a polyamide acid.