US 11,901,784 B2
Stator coil, method of manufacturing the same, and rotating electric machine
Takahiro Mabuchi, Tokyo (JP); Xiaohong Yin, Tokyo (JP); Tsubasa Mori, Tokyo (JP); and Makoto Tsukiji, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/273,739
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Oct. 11, 2018, PCT No. PCT/JP2018/037950
§ 371(c)(1), (2) Date Mar. 5, 2021,
PCT Pub. No. WO2020/075269, PCT Pub. Date Apr. 16, 2020.
Prior Publication US 2021/0351654 A1, Nov. 11, 2021
Int. Cl. H02K 3/30 (2006.01); H02K 3/34 (2006.01); H02K 3/487 (2006.01); H02K 15/10 (2006.01); H02K 15/12 (2006.01)
CPC H02K 3/30 (2013.01) [H02K 3/34 (2013.01); H02K 3/487 (2013.01); H02K 15/105 (2013.01); H02K 15/12 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A stator coil, comprising:
a coil conductor;
a first insulating layer in which a first mica tape is wound and laminated around an outer periphery of the coil conductor; and
a second insulating layer in which a second mica tape is wound and lair inated around an outer periphery of the first insulating layer,
wherein the first mica tape contains mica particles in a content of 30 g or more and 100 or less per 1 m2 of the mica tape,
wherein 60 mass % or more of the mica particles contained in the first mica tape pass through a JIS standard sieve having a nominal opening of 250 μm,
wherein the first mica tape has a lamination thickness of 0.1 mm or more and 1 mm or less, and
wherein 40 mass % or less of mica particles contained in the second mica tape pass through the HS standard sieve having a nominal opening of 250 μm.