Patent ID: 8704628

Claim:
A wireless power communication system, comprising: a power transmission apparatus including a charging power supply circuit, a primary coil, and a primary core, wherein the primary core receives the primary coil and the charging power supply circuit is configured to supply a current to the primary coil; and a power receiving apparatus including a battery unit, a secondary coil, and a secondary core having a width wider than a width of the primary core, wherein the secondary core receives the secondary coil which outputs a current generated by a magnetic field to charge the battery unit, wherein the magnetic field is induced by the primary coil to the secondary coil, wherein: the primary core includes a primary middle protruding portion where the primary coil is wound, and primary edge protruding portions disposed at both sides of the primary middle protruding portion, the secondary core includes a secondary middle protruding portion where the secondary coil is wound, and secondary edge protruding portions disposed at both sides of the secondary middle protruding portion, wherein the secondary edge protruding portions of the secondary core are formed to be protruded such that the secondary edge protruding portions surround parts of the primary edge protruding portions of the primary core, and the width of the primary core is a distance between the outer lines of the primary edge protruding portions and the width of the secondary core is a distance between the outer lines of the secondary edge protruding portions.