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Patent Searching and Data


Title:
WELDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/181513
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a welding device capable of reducing welding current losses. A welding gun comprises: an IGBT switching module 9 in a power supply circuit 200 that connects electrodes 111, 113 and an energy storage unit 6 generating a welding current, said IGBT switching module 9 is connected in series to the energy storage unit 6 and conducts or interrupts the energy storage unit 6 and the electrodes 111, 113; a snubber circuit 2 which is connected in parallel to the IGBT module 9 in the power supply circuit 200; a collector bus bar 3 which connects a collector terminal of the IGBT module 9 and one terminal of the snubber circuit 2; and an emitter bus bar 4 which is provided near the collector bus bar 3 and connects the emitter terminal of the IGBT module 9 and the other terminal of the snubber circuit 2. The direction of the current of the collector bus bar 3 is reverse to the direction of the current of the emitter bus bar 4.

Inventors:
HIRAYAMA Shinyu (6-1, Hagadai, Hagamachi, Hagagu, Tochigi 95, 〒3213395, JP)
WATANABE Shinya (6-1, Hagadai, Hagamachi, Hagagu, Tochigi 95, 〒3213395, JP)
SAITO Hitoshi (6-1, Hagadai, Hagamachi, Hagagu, Tochigi 95, 〒3213395, JP)
Application Number:
JP2019/008909
Publication Date:
September 26, 2019
Filing Date:
March 06, 2019
Export Citation:
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Assignee:
HONDA MOTOR CO., LTD. (1-1 Minami-Aoyama 2-chome, Minato-ku Tokyo, 56, 〒1078556, JP)
International Classes:
B23K11/24; B23K11/11
Foreign References:
JPH09277064A1997-10-28
JP2015136224A2015-07-27
JP2018023984A2018-02-15
JPH04305369A1992-10-28
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (Sapia Tower, 1-7-12 Marunouchi, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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