Wireless power transmitting apparatus and method
View Patent ↗Disclosed herein is a wireless power transmitting apparatus and method of wirelessly a power sequentially to a plurality of power receiving apparatuses. According to the wireless power transmitting apparatus and method, a power is wirelessly transmitted through a plurality of power transmitting coils, and a power transmitting control unit performs a control to allocate priorities to the plurality of power receiving apparatuses charged with the power transmitted by the power transmitting coils by judging whether or not the plurality of power receiving apparatuses have been mounted in portable terminals and charged states of the plurality of power receiving apparatuses in the case in which the number of power receiving apparatuses is plural and sequentially transmit the power to the plurality of power receiving apparatuses according to the allocated priorities to charge the power in the plurality of power receiving apparatuses.
1. A wireless power transmitting apparatus comprising:
a power transmitting unit configured to wirelessly transmit a power through a plurality of power transmitting coils; and
a power transmitting control unit configured to perform a control to judge priorities of a plurality of power receiving apparatuses charged with the power transmitted by the power transmitting unit in the case in which the number of power receiving apparatuses is plural, sequentially select the plurality of power receiving apparatuses one by one according to the judged priorities, and transmit the power to the selected power receiving apparatuses,
wherein the power transmitting unit includes:
a signal transmitting unit configured to generate information request signal requesting information of identifications (IDs) of the plurality of power receiving apparatuses, information on whether or not the plurality of power receiving apparatuses are mounted in portable terminals and information on power charged states under the control of the power transmitting control unit, and configured to transmit the information request signal to the plurality of power receiving apparatuses; and
a signal receiving unit configured to receive information signal transmitted by the power receiving apparatuses according to the information request signal and configured to provide the information signal to the power transmitting control unit.
2. The wireless power transmitting apparatus of claim 1 , wherein the transmission of the information request signal and the reception of the information signal are performed through the plurality of power transmitting coils.
3. The wireless power transmitting apparatus of claim 1 , wherein the priorities are allocated in a scheme in which a first priority is allocated to the power receiving apparatus that is mounted in the portable terminal and a second priority is allocated to the power receiving apparatus that is not mounted in the portable terminal.
4. The wireless power transmitting apparatus of claim 3 , wherein in the case in which the priorities according to the information on whether or not the power receiving apparatuses are mounted in the portable terminals are the same as each other, the priorities are determined according to the power charged states of the power receiving apparatuses.
5. The wireless power transmitting apparatus of claim 1 , wherein the power transmitting unit includes:
a driving driver configured to generate a driving signal that is to detect a variation in a load and a driving signal that is to transmit under the control of the power transmitting control unit; and
a series resonant converter configured to switch a direct current (DC) power according to the driving signal to output the switched DC power to the plurality of power transmitting coils.
6. The wireless power transmitting apparatus of claim 5 , wherein the power transmitting unit includes:
a switching driving unit configured to generate a switching driving signal under the control of the power transmitting control unit; and
a plurality of switches each provided between the series resonant converter and the plurality of power transmitting coils and configured to be switched the switching driving signal.
7. A wireless power transmitting method comprising:
generating, in a signal transmitting unit, information request signal requesting information of identifications (IDs) of power receiving apparatuses, information on whether or not the power receiving apparatuses are mounted in portable terminals and information on power charged states under a control of a power transmitting control unit in the case in which loads of a plurality of power transmitting coils are varied;
transmitting the information request signal to the power receiving apparatuses;
receiving information signal according to the information request signal from the power receiving apparatuses;
judging, in the power transmitting control unit, priorities using the information signal in the case in which the number of power receiving apparatuses is plural; and
sequentially selecting, in the power transmitting control unit, the plurality of power receiving apparatuses one by one according to the priorities and transmitting the power to the selected power receiving apparatuses.
8. The wireless power transmitting method of claim 7 , wherein the priorities are allocated in a scheme in which a first priority is allocated to the power receiving apparatus that is mounted in the portable terminal and a second priority is allocated to the power receiving apparatus that is not mounted in the portable terminal.
9. The wireless power transmitting method of claim 8 , wherein in the case in which the priorities according to whether or not the power receiving apparatuses are mounted in the portable terminals are the same as each other, the priorities are determined according to the power charged states of the power receiving apparatuses.