| 摘要 |
Provided is a power module capable of welding a snubber capacitor without causing melting damage to a resin housing by welding heat. When leads (12A and 12B) of a snubber capacitor (12) are respectively welded to upper surfaces of the specific portions of a P-pole bus bar (2) and an N-pole bus bar (3), the welding heat generated at the specific portions of the P-pole bus bar (2) and the N-pole bus bar (3) is respectively radiated from openings (13 and 14), through which the lower surfaces of the specific portions of the P-pole bus bar (2) and the N-pole bus bar (3) are exposed. As a result, the snubber capacitor (12) can be later appended by welding without causing melting damage to the resin housing (7) due to the welding heat. During welding, a separate cooling head (15) is inserted into the openings (13 and 14) to forcibly cool the lower surfaces of the specific portions of the P-pole bus bar (2) and the N-pole bus bar (3) respectively, so that the melting damage to a resin housing (7) can be more reliably avoided. |
