Method of making a thermoelectric device
In order to provide a highly reliable thermoelectric device, in a thermoelectric device, a plurality of heat-radiating-side electrodes, arranged in accordance with positions where respective thermoelectric elements are to be arranged, are arrayed in an array fashion on a planer surface of a heat-radiating-side board. Heat-radiating-side end surfaces of the plurality of p-type thermoelectric elements and n-type thermoelectric elements and the heat-radiating-side electrodes are joined together by solders. Heat-absorbing-side electrodes are brought into sliding contact with heat-absorbing-side end surfaces of these thermoelectric elements.
1. A manufacturing method of a thermoelectric device comprising:
joining one end surfaces of a plurality of thermoelectric elements to a wiring board;
arranging a plurality of electrode members to slidably contact other end surfaces of the plurality of thermoelectric elements;
arranging a lid outside of the electrode members; and
coupling a lid and the wiring board by a coupling member so that pressure is applied between the lid and the wiring board.
2. The manufacturing method of a thermoelectric device of claim 1 further comprising:
arranging deformable structure members made of a conductive material between the thermoelectric elements and the electrode members.
3. The manufacturing method of a thermoelectric device of claim 1 further comprising:
arranging insulating members which regulate positions of the thermoelectric elements between the thermoelectric elements.
4. The manufacturing method of a thermoelectric device of claim 1 ,
wherein a ceramic is used for the wiring board, a Kovar is used for the lid, and a ceramic is used for the coupling member, the manufacturing method further comprising:
coupling the coupling member and the wiring board by a brazing material; and
coupling the coupling member and the lid by brazing material and Kovar.
5. The manufacturing method of a thermoelectric device of claim 1 further comprising:
forming a joint surface of the coupling member to the wiring board into a chamfer shape; and
coupling the joint surface of the coupling member and the wiring board by a brazing material.
6. The manufacturing method of a thermoelectric device of claim 1 further comprising:
arranging the thermoelectric elements to the wiring board so that an interval between the thermoelectric elements surrounded by the electrode member is shorter than an interval between the thermoelectric element and an another thermoelectric element surrounded by an another electrode member adjacent to the electrode member.
7. The manufacturing method of a thermoelectric device of claim 1 further comprising:
making a sealing hole to the lid;
arranging the thermoelectric device in which the lid and the wiring board are coupled by the coupling member into a reduced-pressure atmosphere; and
closing the sealing hole under the reduced-pressure atmosphere.
8. The manufacturing method of a thermoelectric device of claim 7 , wherein the sealing hole is closed by laser.
9. The manufacturing method of a thermoelectric device of claim 1 further comprising:
forming a through hole to pass a wire to take out an electromotive power generated in the thermoelectric elements through the wiring board.