The invention relates to a coil unit. A power transmission device includes: a ferrite 22 formed as a plate having a prescribed shape with a plurality of corners 46 as viewed in a thickness direction;and a power transmission coil 12 arranged in a spiral pattern along one of main surfaces of the ferrite 22 in the thickness direction, such that a coil wire surrounds a winding axis passing through the main surface. The power transmission coil 12 is formed such that an outer periphery of the power transmission coil 12 is located on an inner side relative to each corner 46 at the corner, and a first coil width A between an inner periphery and the outer periphery of the power transmission coil 12 at the corner 46 is longer than a second coil width B between the inner periphery and the outer periphery of the power transmission coil 12 at a position different from the corner 46.
本发明涉及线圈单元。电力传输装置包括:铁氧体(22),该铁氧体被形成为板,该板具有当在厚度方向上观察时具有多个角部(46)的规定形状;以及电力传输线圈(12),该电力传输线圈在厚度方向上沿着铁氧体(22)的一个主表面以螺旋形图案布置,使得线圈线围绕穿过主表面的卷绕轴线。该电力传输线圈(12)被形成为使得在角部处电力传输线圈(12)的外周相对于每个角部(46)位于内侧,并且在角部(46)处的电力传输线圈(12)的内周与外周之间的第一线圈宽度A长于在与角部(46)不同的位置处的电力传输线圈(12)的内周与外周之间的第二线圈宽度B。
COIL UNIT
线圈单元
2020-04-21
Patent
Elektronische Ressource
Chinesisch