ATTRACTOR FOR A WIRELESS CHARGING RECEIVER MODULE OF A PMA WIRELESS CHARGING TYPE, SHIELDING UNIT AND A WIRELESS CHARGING RECEIVER MODULE HAVING THE SAME

摘要

Provided are an attractor for a PMA wireless charging type wireless power receiving module, a shielding unit, and a wireless power receiving module including the same. The attractor for the PMA wireless charging type wireless power receiving module according to an embodiment of the present invention is installed in the PMA wireless charging type wireless power receiving module. The attractor is provided to induce a part of lines of magnetic force generated in a wireless power transmitting module, and change the path of magnetic flux when the wireless power receiving module approaches the wireless power transmitting module, thereby inducing a change in the voltage value satisfying an operation starting condition of the wireless power transmitting module. Total thickness of the wireless power receiving module is designed to be less than 0.5 mm or less than 0.3 mm. The attractor includes a thin plate magnetic piece formed by a magnetic material having more than 0.5 tesla saturated magnetic flux density in order that the center of the wireless power receiving module and the wireless power transmitting module to detect the voltage value having more than predetermined size change in a disordered state in a disordered area having a predetermined size. Even though the attractor having less than 150 μm thickness is manufactured, an ultra-slim wireless power receiving module is manufactured by obtaining a stable operation voltage value.