| 摘要 |
[Purpose] To provide an economical capacitor-type welding device and capacitor-type welding method that have a small power loss, that can be made compact, and that reliably control a charging circuit without being affected by the inductance of a charging path. [Solution] In an exemplary capacitor-type welding device and an exemplary capacitor-type welding method of the invention, a bypass switching element (5) having a forward-blocking function is connected in parallel to output terminals (3, 4) of a charging circuit (2), and the bypass switching element (5) is brought into a conduction state to allow a backflow current, which is caused to flow by a magnetic energy stored in the inductance of a primary winding (6a) or an inductor (14) included in the charging path, to bypass the charging circuit. A discharge switching element (8) is brought into a conduction state after the bypass switching element (5) enters the non-conduction state and recovers the forward-blocking function. |
