US 11,877,513 B2
Method for manufacturing thermoelectric conversion module
Tomotake Tohei, Tokyo (JP); Takashi Nogawa, Tokyo (JP); Nan Wang, Tokyo (JP); Michiko Matsuda, Tokyo (JP); and Takeshi Shimada, Tokyo (JP)
Assigned to Proterial, Ltd., Tokyo (JP)
Appl. No. 17/639,320
Filed by Proterial, Ltd., Tokyo (JP)
PCT Filed Sep. 4, 2020, PCT No. PCT/JP2020/033570
§ 371(c)(1), (2) Date Feb. 28, 2022,
PCT Pub. No. WO2021/045186, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 2019-161691 (JP), filed on Sep. 5, 2019.
Prior Publication US 2022/0320413 A1, Oct. 6, 2022
Int. Cl. H10N 10/01 (2023.01); H10N 10/854 (2023.01)
CPC H10N 10/01 (2023.02) [H10N 10/854 (2023.02)] 3 Claims
OG exemplary drawing
 
1. A method for manufacturing a thermoelectric conversion module in which a first conductive member, a thermoelectric conversion element, and a second conductive member are joined by a joining member, comprising:
applying a first paste containing copper nanoparticles onto the first conductive member, disposing the thermoelectric conversion element on the first paste, and compressing and spreading the first paste;
applying a second paste containing copper nanoparticles onto the thermoelectric conversion element in a controlled amount, disposing the second conductive member, and compressing and spreading the second paste; and
sintering the first paste and the second paste to obtain the joining member,
wherein the first paste and the second paste have a relationship between a shear rate and a viscosity such that an inclination on a side with a large shear rate is smaller than an inclination on a side with a small shear rate,
wherein a mechanical dispenser having a screw is used to apply the first paste and the second paste in the controlled amount, wherein a number of screw rotations is 5 to 15 rpm and wherein the copper nanoparticles have an average size greater than 20 nm and less than 500 nm.