US2019341810A1PendingUtilityA1

Wireless power transmission apparatus and wireless power transmission method

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Assignee: LG INNOTEK CO LTDPriority: Feb 16, 2015Filed: Jul 17, 2019Published: Nov 7, 2019
Est. expiryFeb 16, 2035(~8.6 yrs left)· nominal 20-yr term from priority
Inventors:Su Ho Bae
H02J 7/42H02J 50/80H02J 50/12H02J 50/60H02J 7/025H02J 50/40H01F 38/14H04B 5/79
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Claims

Abstract

A wireless power transmission method of a wireless power transmitter can include detecting a first wireless power receiver for charging through a first power transmission scheme; attempting to charge the first wireless power receiver when the first wireless power receiver is detected; proceeding to charge the first wireless power receiver to a first charging power; detecting a second wireless power receiver for charging through a second power transmission scheme when the first wireless power receiver is not detected or when charging the first wireless power receiver fails even after the wireless power transmitter attempted to charge the first wireless power receiver; attempting to charge the second wireless power receiver when the second wireless power receiver is detected; and proceeding to charge the second wireless power receiver to a second charging power.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A wireless power transmission method of a wireless power transmitter, the method comprising:
 detecting a first wireless power receiver for charging through a first power transmission scheme;   attempting to charge the first wireless power receiver when the first wireless power receiver is detected;   proceeding to charge the first wireless power receiver to a first charging power;   detecting a second wireless power receiver for charging through a second power transmission scheme when the first wireless power receiver is not detected or when charging the first wireless power receiver fails even after the wireless power transmitter attempted to charge the first wireless power receiver;   attempting to charge the second wireless power receiver when the second wireless power receiver is detected; and   proceeding to charge the second wireless power receiver to a second charging power.   
     
     
         2 . The method of  claim 1 , wherein the second charging power is greater than the first charging power. 
     
     
         3 . The method of  claim 1 , wherein the first charging power has a first charging frequency, and the second charging power has a second charging frequency, and
 wherein the second charging frequency is higher than the first charging frequency.   
     
     
         4 . The method of  claim 1 , wherein the first power transmission scheme includes a negotiation step through an in-band communication scheme. 
     
     
         5 . The method of  claim 1 , wherein the second power transmission scheme includes a negotiation step through an out-band communication scheme. 
     
     
         6 . The method of  claim 5 , wherein the out-band communication scheme is performed by using Near Field Communication (NFC) or Bluetooth communication. 
     
     
         7 . The method of  claim 1 , further comprising:
 detecting a third wireless power receiver for charging through a third power transmission scheme when the second wireless power receiver is not detected or when charging the second wireless power receiver fails even after the wireless power transmitter attempted to charge the second wireless power receiver;   attempting to charge the third wireless power receiver when the third wireless power receiver is detected; and   proceeding to charge the third wireless power receiver to a third charging power.   
     
     
         8 . The method of  claim 7 , wherein the third charging power is different from the first charging power or the second charging power. 
     
     
         9 . The method of  claim 7 , wherein the third charging power has a third charging frequency, and
 wherein the third charging frequency is different from the first charging frequency or the second charging frequency.   
     
     
         10 . The method of  claim 7 , wherein the third power transmission scheme has an in-band communication scheme or an out-band communication scheme. 
     
     
         11 . A wireless power transmitter comprising:
 a first coil for charging based on a first power transmission scheme;   a second coil for charging based on a second power transmission scheme; and   a controller configured to:   detect a first wireless power receiver for charging through the first power transmission scheme,   attempt to charge the first wireless power receiver when the first wireless power receiver is detected,   charge, via the first coil, the first wireless power receiver to a first charging power,   detect a second wireless power receiver for charging through the second power transmission scheme when the first wireless power receiver is not detected or when charging the first wireless power receiver fails even after an attempt to charge the first wireless power receiver,   attempt to charge the second wireless power receiver when the second wireless power receiver is detected, and   charge, via the second coil, the second wireless power receiver to a second charging power.   
     
     
         12 . The wireless power transmitter of  claim 11 , wherein the second charging power is greater than the first charging power. 
     
     
         13 . The wireless power transmitter of  claim 11 , wherein the first charging power has a first charging frequency, and the second charging power has a second charging frequency, and
 wherein the second charging frequency is higher than the first charging frequency.   
     
     
         14 . The wireless power transmitter of  claim 11 , wherein the first power transmission scheme includes a negotiation step through an in-band communication scheme. 
     
     
         15 . The wireless power transmitter of  claim 11 , wherein the second power transmission scheme includes a negotiation step through an out-band communication scheme. 
     
     
         16 . The wireless power transmitter of  claim 15 , wherein the out-band communication scheme includes Near Field Communication (NFC) or Bluetooth communication. 
     
     
         17 . The wireless power transmitter of  claim 11 , wherein the controller is further configured to:
 detect a third wireless power receiver for charging through a third power transmission scheme when the second wireless power receiver is not detected or when charging the second wireless power receiver fails even after an attempt to charge the second wireless power receiver,   attempt to charge the third wireless power receiver when the third wireless power receiver is detected, and   charge the third wireless power receiver to a third charging power.   
     
     
         18 . The wireless power transmitter of  claim 17 , wherein the third charging power is different from the first charging power or the second charging power. 
     
     
         19 . The wireless power transmitter of  claim 17 , wherein the third charging power has a third charging frequency, and
 wherein the third charging frequency is different from the first charging frequency or the second charging frequency.   
     
     
         20 . The wireless power transmitter of  claim 17 , wherein the third power transmission scheme has an in-band communication scheme or an out-band communication scheme.

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