Contactless charging module, contactless charging device, and method of manufacturing contactless charging module

摘要

A contactless charging module, a contactless charging device, and a method of manufacturing the contactless charging module, wherein a magnetic sheet can be prevented from being damaged and giving an adverse effect on power transmission characteristic, by adopting a flexible magnetic sheet having slits, and wherein power transmission efficiency of the contactless charging module can be prevented from decreasing significantly. The contactless charging module is provided with: a planar coil unit; a magnetic sheet upon which the planar coil unit is to be mounted; a recess section or a slit that is formed on the magnetic sheet, and that is for housing therein a portion of a conductor wire of the planar coil unit; and a plurality of flexible slits that are for giving flexibility to the magnetic sheet. At least one of the plurality of flexible slits is formed such that a virtual extension line of the flexible slit will be arranged within the width of the recess section or the slit.

主权项

1. A non-contact charging module comprising:
a planar coil formed of a wound conductive wire; a magnetic sheet on which a coil surface of the planar coil is to be mounted and which is provided opposite to the coil surface of the planar coil; a recessed portion or a slit provided in the magnetic sheet, the recessed portion or the slit extending from a winding start point of the planar coil to an end portion of the magnetic sheet and housing a part of the conductive wire of the planar coil; and a plurality of flexible slits that provide flexibility to the magnetic sheet, wherein: a relationship between width W of the recessed portion or the slit and pitch P of the plurality of flexible slits is W≦P; at least one of the plurality of flexible slits extends in parallel to a longitudinal direction of the recessed portion or the slit and a virtual extension of the flexible slit is placed within the width of the recessed portion or the slit.