Wireless power transmitting apparatus and method thereof
First Claim
1. A wireless power transmitting apparatus wirelessly transmitting power to a wireless power receiving apparatus, the wireless power transmitting apparatus comprising:
- a detector detecting a wireless power transmission state between the wireless power transmitting apparatus and the wireless power receiving apparatus;
a transmit power controller generating a control signal to control transmit power based on the detected wireless power transmission state;
an AC power generator generating an AC power using first DC power based on the control signal; and
a transmission induction coil unit transmitting the AC power to a transmission resonance coil through an electromagnetic induction scheme;
wherein the AC power generator comprises;
a DC-DC converter converting the first DC power into second DC power based on the control signal; and
a DC-AC converter converting the second DC power into the AC power;
wherein the detector detects the wireless power transmission state based on a level of an output current of the DC-DC converter.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed are a wireless power transmitting apparatus and a method thereof. The wireless power transmitting apparatus wirelessly transmits power to a wireless power receiving apparatus. The wireless power transmitting apparatus detects a wireless power transmission state between the wireless power transmitting apparatus and the wireless power receiving apparatus, and generates a control signal to control transmit power based on the detected wireless power transmission state. The wireless power transmitting apparatus generates the transmit power by using first DC power based on the control signal, and transmits the transmit power to a transmission resonance coil through a transmission induction coil unit based on an electromagnetic induction scheme.
-
Citations
13 Claims
-
1. A wireless power transmitting apparatus wirelessly transmitting power to a wireless power receiving apparatus, the wireless power transmitting apparatus comprising:
-
a detector detecting a wireless power transmission state between the wireless power transmitting apparatus and the wireless power receiving apparatus; a transmit power controller generating a control signal to control transmit power based on the detected wireless power transmission state; an AC power generator generating an AC power using first DC power based on the control signal; and a transmission induction coil unit transmitting the AC power to a transmission resonance coil through an electromagnetic induction scheme; wherein the AC power generator comprises; a DC-DC converter converting the first DC power into second DC power based on the control signal; and a DC-AC converter converting the second DC power into the AC power; wherein the detector detects the wireless power transmission state based on a level of an output current of the DC-DC converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A wireless power transmitting apparatus wirelessly transmitting power to a wireless power receiving apparatus, the wireless power transmitting apparatus comprising:
-
a transmission induction coil transmitting power applied thereto to a transmission resonance coil through an electromagnetic induction scheme; a transistor circuit unit having a full-bridge structure and connected to the transmission induction coil; a detector detecting a wireless power transmission state between the wireless power transmitting apparatus and the wireless power receiving apparatus; and a transmit power controller controlling the transistor circuit unit having the full-bridge structure based on the detected wireless power transmission state; wherein the transistor circuit unit having the full-bridge structure comprises; a first transistor comprising a drain electrode having DC power applied thereto and a source electrode connected to one terminal of the transmission induction coil; a second transistor comprising a drain electrode connected to the source electrode of the first transistor and a source electrode connected to a ground; a third transistor comprising a drain electrode having the DC power a lied thereto and a source electrode connected to an opposite terminal of the transmission induction coil; and a fourth transistor comprising a drain electrode connected to the source electrode of the third transistor and a source electrode connected to the ground. - View Dependent Claims (10, 11, 12)
-
-
13. A wireless power transmitting apparatus wirelessly transmitting power to a wireless power receiving apparatus, the wireless power transmitting apparatus comprising:
-
a detector detecting a wireless power transmission state between the wireless power transmitting apparatus and the wireless power receiving apparatus; a transmit power controller generating a control signal to control transmit power based on the detected wireless power transmission state; an AC power generator generating an AC power using first DC power based on the control signal; and a transmission induction coil unit transmitting the AC power to a transmission resonance coil through an electromagnetic induction scheme; wherein the transmit power controller comprises a DC power generation controller generating a DC power generation control signal based on the detected wireless power transmission state, wherein the DC power generation controller changes a duty cycle of the DC power generation control signal based on the detected wireless power transmission state.
-
Specification