Patent AU-2020286162-B2 (AU)
Title: A welding transformer
Inventor: KAI KOUJI
IPC: H01F3/08
Filed: 2020-03-24
Granted: 2022-06-09
Abstract: H (10.06.2021) WO 2021/111651 Al 
WIPO I PCT 
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(54) Title: WELDING TRANSFORMER 
(54)HM A€J: PA b ) 
(57) Abstract: The present invention achieves simplifica
tion of the structure and improvement of the coolability of a 
Fig3 4 welding transformer. A group of electrically and thermally 
conducting flat planes is formed on a common connection 
region 32 of a secondary coil 13. Each of the conducting 
s' planes in the group is directly and mechanically connected 
to a con o surface of a first conducting plate 42, a con
32 nection surface of a second conducting plate 44 and a con
nection surface of a third conducting plate 46. The first con
Is ducting plate 42, the second conducting plate 44 and the third 
conducting plate 46 cover the whole of the common con
44 nection region 32. The first conducting plate 42, which has 
an annular shape, has the largest area. A coolant is circulat
ed through an annular cavity that is provided inside the first 
- 42 conducting plate 42, which makes it possible to efficiently 
cool the whole. The structure is simplified and has high me
chanical strength.  
60
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