Stacked coil structure and electronic device including the same
摘要
說明書
According to an embodiment, the first number of turns of the first layer 211 may be larger than the second number of turns of the second layer 212. For example, the first layer 211 may have a structure in which a wire is helically wound at least three times around the central axis O, and the second layer 212 may have a structure in which a wire is helically wound at least two times around the central axis O. As another embodiment, the fourth number of turns of the fourth layer 222 may be larger than the third number of turns of the third layer 221. For example, the fourth layer 222 may have a structure in which a wire is helically wound at least three times around the central axis, and the third layer 221 may have a structure in which a wire is helically wound at least two times around the central axis O. However, the number of turns of the first layer 211, the number of turns of the second layer, the number of turns of the third layer 221, and/or the number of turns of the fourth layer 222 is not limited thereto, and it is possible to change the design to various numbers of turns capable of maximizing the wireless power transmission efficiency and minimizing heat generation.
