US 12,266,462 B2
Reactor and multi-phase interleave-type DC-DC converter
Kazuhisa Ishizuka, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Appl. No. 17/289,608
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
PCT Filed Oct. 16, 2019, PCT No. PCT/JP2019/040683
§ 371(c)(1), (2) Date Apr. 28, 2021,
PCT Pub. No. WO2020/090472, PCT Pub. Date May 7, 2020.
Claims priority of application No. 2018-207522 (JP), filed on Nov. 2, 2018.
Prior Publication US 2021/0375523 A1, Dec. 2, 2021
Int. Cl. H01F 27/28 (2006.01); H01F 27/02 (2006.01); H01F 27/24 (2006.01); H02M 3/158 (2006.01)
CPC H01F 27/28 (2013.01) [H01F 27/02 (2013.01); H01F 27/24 (2013.01); H02M 3/158 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A reactor which includes a first core, a first coil wound around the first core, and a second coil wound around the first core, and is used for power conversion, wherein:
the first coil and the second coil each have one end portion where an output voltage of a power source is input, and an other end portion electrically connected to an output side where the converted power is output, and are further wound such that a direction of a magnetic flux generated in the first core when a current flows from the one end portion to the other end portion of the first coil and a direction of a magnetic flux generated in the first core when a current flows from the one end portion to the other end portion of the second coil are opposite to each other;
a second core provided on an outside of at least one of the first coil and the second coil, is further provided;
a leakage magnetic flux, which is generated from one of the first coil and the second coil by energization and is not interlinked to an other of the first coil and the second coil, passes through the second core and circulates around one of the first and second coils;
the second core has a second sub-core portion formed between the first coil and the second coil;
the second sub-core portion is separated into a plurality of parts in an axial direction of the first coil and the second coil; and
the second sub-core portion is separated into the plurality of parts by a spacer disposed between the first coil and the second coil and extending from the first coil toward the second coil.