Non-Contact Power Charging System and Control Method Thereof
First Claim
Patent Images
1. A non-contact power charging system, comprising:
- a non-contact power transmission apparatus generating a power signal at a primary charge core thereof; and
a non-contact power receiving apparatus receiving the power signal from the non-contact power transmission apparatus so as to be charged with power by the control of the non-contact power charging system, wherein the non-contact power receiving apparatus comprises;
a secondary charge core generating induced current in response to the primary charge core of the non-contact power transmission apparatus;
a rectifier block connected to the secondary charge core to rectify the induced current;
a charge IC block causing to charge a battery cell with the power from the rectifier block;
a received power monitor module monitoring the power received through the secondary charge core; and
a power receiver control unit constructed to control the rectifier block, the charge integrated circuit block and the received power monitor module, and to control identifier generation and a charge status signal,wherein the received power monitor module includes a low voltage monitor module comparing and discerning whether or not the received power is detected to have a low voltage and a high voltage monitor module comparing and discerning whether or not the received power is detected to have a high voltage.
3 Assignments
0 Petitions
Accused Products
Abstract
A non-contact power charging, in which power transmission can be interrupted when foreign materials are deposited on a charge plate of the non-contact power charging system. A charging operation can be continuously maintained at a stable voltage even if a non-contact power receiving apparatus moves by touching or displacement on the charge plate of the non-contact power charging system in the charging operation. Charging efficiency is improved.
296 Citations
5 Claims
-
1. A non-contact power charging system, comprising:
-
a non-contact power transmission apparatus generating a power signal at a primary charge core thereof; and a non-contact power receiving apparatus receiving the power signal from the non-contact power transmission apparatus so as to be charged with power by the control of the non-contact power charging system, wherein the non-contact power receiving apparatus comprises; a secondary charge core generating induced current in response to the primary charge core of the non-contact power transmission apparatus; a rectifier block connected to the secondary charge core to rectify the induced current; a charge IC block causing to charge a battery cell with the power from the rectifier block; a received power monitor module monitoring the power received through the secondary charge core; and a power receiver control unit constructed to control the rectifier block, the charge integrated circuit block and the received power monitor module, and to control identifier generation and a charge status signal, wherein the received power monitor module includes a low voltage monitor module comparing and discerning whether or not the received power is detected to have a low voltage and a high voltage monitor module comparing and discerning whether or not the received power is detected to have a high voltage.
-
-
2. A control method of a non-contact power charging system, which includes a non-contact power transmission apparatus generating a power signal at a primary charge core thereof and a non-contact power receiving apparatus receiving the power signal from the non-contact power transmission apparatus so as to be charged with power, the method comprising:
-
transmitting, at the primary core of the non-contact power transmission apparatus, an object detection signal including a call signal that call a unique identifier value from the non-contact power receiving apparatus, and standing by for a response signal; discerning whether or not a normal unique identifier signal is received from the non-contact power receiving apparatus by discerning a signal detected according to load modulation by the primary charge core; if it is discerned that a normal unique identifier signal is received from the non-contact power receiving apparatus, generating, at the primary charge core through a gate driver module of the non-contact power transmission apparatus, a full power transmission signal; requesting charge status information from the non-contact power receiving apparatus and adjusting charge level based on the charge status information received from the non-contact power receiving apparatus; and if fully-charged state information is received from the non-contact power receiving apparatus, terminating a charging operation and displaying fully-charged state on a liquid crystal display panel or a charge status indicator light emitting module. - View Dependent Claims (3, 4)
-
-
5. A control method of a non-contact power charging system, which includes a non-contact power transmission apparatus generating a power signal from a primary charge core thereof, and a non-contact power receiving apparatus receiving the power signal from the non-contact power transmission apparatus so as to be charged with power, the method comprising:
-
detecting, at the non-contact power receiving apparatus in a standby mode for receiving the power signal, detecting a call signal transmitted together with an object detection signal from the primary charge core of the non-contact power transmission apparatus to call a unique identifier value from the non-contact power receiving apparatus, and transmitting a signal related with the call identifier value of the non-contact power receiving apparatus to the non-contact power transmission apparatus; converting into a charge standby mode after the unique identifier value is transmitted, rectifying the power signal transmitted from the non-contact power transmission apparatus and charging a battery cell with the rectified power signal; discerning whether or not the power signal transmitted from the non-contact power transmission apparatus has a reference voltage, and transmitting a voltage adjustment signal to request voltage step-up if the discerned power signal is below the reference voltage or to request voltage step-down if the discerned power signal is above the reference voltage; after the voltage adjustment signal is transmitted, if a received voltage is the reference voltage, generating a signal indicative of normal reception; and discerning whether or not the battery cell is in fully charged status, and if the battery cell is in fully charged status, terminating a charging operation.
-
Specification