Title:
コイル部品及びこれを備えたワイヤレス電力伝送回路
Document Type and Number:
Japanese Patent JP7073858
Kind Code:
B2
Abstract:
To provide a coil component having a spiral-shaped flat surface conductor, capable of reducing a loss caused by an influence of a magnetic field.SOLUTION: In a coil pattern 100 wound in spiral over a plurality of turns, a pattern width W4 at a center position is larger than a pattern width W1 of an innermost peripheral turn 154 and a pattern width W2 of an outermost peripheral turn 111, and a total value or a mean value of the pattern width of each turn from the outermost peripheral turn 111 to an intermediate turn 133 is larger than the total value or the mean value of the pattern width of each turn from the innermost peripheral turn 154 to an intermediate turn 113. According to the present invention, sine each conductive pattern is designed in the pattern width in accordance with intensity of a magnetic field, AC resistance can be more reduced as compared with the case where the pattern width of the coil pattern is simply formed symmetrically at an inner peripheral side and an outer peripheral side.SELECTED DRAWING: Figure 1
Inventors:
Noritaka Chiyo
Application Number:
JP2018070450A
Publication Date:
May 24, 2022
Filing Date:
March 31, 2018
Export Citation:
Assignee:
tdk Corporation
International Classes:
H01F5/00; H01F17/00; H01F27/28; H01F38/14
Domestic Patent References:
| JP2001085230A | ||||
| JP2010016337A | ||||
| JP2011049220A | ||||
| JP2003017322A | ||||
| JP2019041273A | ||||
| JP2003197438A | ||||
| JP2007128927A |
Foreign References:
| WO2017030289A1 |
Attorney, Agent or Firm:
Mitsuhiro Washito
Ogata Japanese
Yasuyuki Kurose
Ogata Japanese
Yasuyuki Kurose
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