Wireless charging system having different charging modes

Abstract

Provided is a wireless charging system having different wireless modes, the system comprising: a method of providing a coil having different charging modes in one set, which is performed by providing separate coils or providing a lead wire in the middle of one coil, when the coil having at least two different charging modes is provided in the one set in a receiver for the wireless charging system using non-contact magnetic induction, wherein when one charging mode is selected for one coil set, a status value of the coil for transmitting and receiving wireless power energy is detected, thereby enabling the one charging mode to be selected, and different to charging modes is mounted in one wireless charging system so that a charging mode appropriate for optimum conditions can be selected according to states and charging conditions wireless power transmitting and receiving devices.

1 . A wireless charging transmitter comprising:
 a first wireless charging antenna set having a first base plate and a first wireless charging coil formed on the first base plate for transmitting the wireless charging energy, and   a second wireless charging antenna set having a second base plate and a second wireless charging coil formed on the second base plate for transmitting the wireless charging energy,   wherein the first base plate and the second base plate are located at different vertical level and the first wireless charging coil and the second wireless charging coil are installed with an overlapping area,   wherein the overlapping area is an area occupied by both the first wireless charging coil and the second wireless charging coil when viewed at the top and the overlapping area is 10% to 90% of an area occupied by the first wireless charging coil.   
     
     
         2 . The wireless charging transmitter of  claim 1 , further comprising at least one NFC coil. 
     
     
         3 . The wireless charging transmitter of  claim 2 , further comprising a first NFC coil and a second NFC coil, and
 wherein the first wireless charging coil and the second wireless charging coil are provided in an inside space surrounded by the first NFC coil and the second NFC coil with 1 mm to 10 mm apart from the first NFC coil, respectively.   
     
     
         4 . The wireless charging transmitter of  claim 3 , wherein the distance between the wireless charging coil and the corresponding NFC coil is 5 mm to 10 mm. 
     
     
         5 . The wireless charging transmitter of  claim 3 , further comprising a MCU selecting a charging mode through data communication using one of the NFC coils; and
 a switch selecting the first wireless charging coil or the second wireless charging according to the charging mode.   
     
     
         6 . The wireless charging transmitter of  claim 3 , wherein the wireless charging frequencies of the first wireless charging coil and the second wireless charging coil are different each other. 
     
     
         7 . The wireless charging transmitter of  claim 6 , wherein the first wireless charging coil transmits wireless charging energy at a frequency less than 1 MHz and to the second wireless charging coil transmits wireless charging energy at a frequency more than 1 MHz. 
     
     
         8 . The wireless charging transmitter of  claim 3 , further comprising a resonator for amplifying wireless power energy. 
     
     
         9 . The wireless charging transmitter of  claim 5 , wherein the NFC coils maintain off state when the first wireless charging coil or the second wireless charging is on state. 
     
     
         10 . The wireless charging transmitter of  claim 2 , further comprising a MCU selecting a charging mode through data communication using the NFC coils; and
 a switch selecting the first wireless charging coil or the second wireless charging according to the charging mode.   
     
     
         11 . The wireless charging transmitter of  claim 2 , wherein the wireless charging frequencies of the first wireless charging coil and the second wireless charging coil are different each other. 
     
     
         12 . The wireless charging transmitter of  claim 11 , wherein the first wireless charging coil transmits wireless charging energy at a frequency less than 1 MHz and the second wireless charging coil transmits wireless charging energy at a frequency more than 1 MHz. 
     
     
         13 . The wireless charging transmitter of  claim 2 , further comprising a resonator for amplifying wireless power energy. 
     
     
         14 . The wireless charging transmitter of  claim 2 , wherein the NFC coil maintains off state when the first wireless charging coil or the second wireless charging is on state. 
     
     
         15 . A wireless charging system having a wireless charging transmitter and a wireless charging receiver,
 wherein the wireless charging transmitter comprises:
 a first wireless charging antenna set having a first base plate and a first wireless charging coil formed on the first base plate for transmitting the wireless charging energy, and 
 a second wireless charging antenna set having a second base plate and a second wireless charging coil formed on the second base plate for transmitting the wireless charging energy, 
 wherein the first base plate and the second base plate are located at different vertical level and the first wireless charging coil and the second wireless charging coil are installed with an overlapping area, 
   wherein the overlapping area is an area occupied by both the first wireless charging coil and the second wireless charging coil when viewed at the top and the overlapping area is 10% to 90% of an area occupied by the first wireless charging coil, and   wherein the wireless charging receiver comprises at least one wireless charging coil for receiving the wireless charging energy transmitted from the first wireless charging coil or the second wireless charging coil.   
     
     
         16 . The wireless charging system of  claim 15 , wherein the wireless charging transmitter further comprises at least one NFC coil. 
     
     
         17 . The wireless charging system of  claim 16 , wherein the wireless charging receiver further comprises at least one NFC coil. 
     
     
         18 . The wireless charging system of  claim 16 , wherein the wireless charging transmitter further comprises at least one resonator for amplifying wireless power energy. 
     
     
         19 . The wireless charging system of  claim 16 , wherein the wireless charging receiver further comprises at least one resonator for amplifying wireless power energy. 
     
     
         20 . The wireless charging transmitter of  claim 17 , wherein the NFC coil to maintains off state when the first wireless charging coil or the second wireless charging is on state.