Wireless power transfer method, apparatus and system
First Claim
1. A communication method of a wireless power transmitter for transferring power in a wireless manner, the communication method comprising:
- allocating a slot among a plurality of slots to a first wireless power receiver, the slot being allocated to the first wireless power receiver for acquiring information of the first wireless power receiver while wireless power is transferred to the first wireless power receiver;
transferring the wireless power to the first wireless power receiver by the wireless power transmitter;
detecting a second wireless power receiver by the wireless power transmitter during the wireless power transfer to the first wireless power receiver; and
generating a collision related signal based on a frequency shift keying (FSK) such that a collision resolution mechanism is executed by each of the first and second wireless power receivers respectively when first information generated by the first wireless power receiver and second information generated by the second wireless power receiver are in a collision within a first unallocated slot among the plurality of slots, the first information and the second information being generated based on a load modulation.
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Abstract
A communication method of a wireless power transmitter for transferring power in a wireless manner, includes allocating a slot among a plurality of slots to a first wireless power receiver, the slot being allocated to the first wireless power receiver for acquiring information of the first wireless power receiver while wireless power is transferred to the first wireless power receiver; transferring the wireless power to the first wireless power receiver by the wireless power transmitter; detecting a second wireless power receiver by the wireless power transmitter during the wireless power transfer to the first wireless power receiver; and generating a collision related signal based on a frequency shift keying (FSK) such that a collision resolution mechanism is executed by each of the first and second wireless power receivers respectively when first information generated by the first wireless power and second information generated by the second wireless power are in a collision within a first unallocated slot among the plurality of slots, the first information and the second information being generated based on a load modulation.
14 Citations
13 Claims
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1. A communication method of a wireless power transmitter for transferring power in a wireless manner, the communication method comprising:
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allocating a slot among a plurality of slots to a first wireless power receiver, the slot being allocated to the first wireless power receiver for acquiring information of the first wireless power receiver while wireless power is transferred to the first wireless power receiver; transferring the wireless power to the first wireless power receiver by the wireless power transmitter; detecting a second wireless power receiver by the wireless power transmitter during the wireless power transfer to the first wireless power receiver; and generating a collision related signal based on a frequency shift keying (FSK) such that a collision resolution mechanism is executed by each of the first and second wireless power receivers respectively when first information generated by the first wireless power receiver and second information generated by the second wireless power receiver are in a collision within a first unallocated slot among the plurality of slots, the first information and the second information being generated based on a load modulation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless power transmitter for transferring power in a wireless manner, the wireless power transmitter comprising:
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a power transmission unit configured to transfer power in a wireless manner; and a power transmission controller configured to; allocate a slot among a plurality of slots to a first wireless power receiver, wherein the slot is allocated to the first wireless power receiver for acquiring information of the first wireless power receiver while wireless power is transferred to the first wireless power receiver using the power transmission unit, detect a second wireless power receiver during the wireless power transfer to the first wireless power receiver, and generate a collision related signal based on a frequency shift keying (FSK) such that a collision resolution mechanism is executed by each of the first and second wireless power receivers respectively when first information generated by the first wireless power receiver and second information generated by the second wireless power receiver are in a collision within a first unallocated slot among the plurality of slots, the first information and the second information being generated based on a load modulation. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification