Description:TECHNICAL FIELD
[001] The present invention relates generally to a system and method for wireless power charging system.
BACKGROUND
[002] Conventionally, a charging system has been used to charge electric power, supplied from a regular power source to the batteries or a battery pack of the portable devices via power supply lines or power supply connectors. However, when the charger and the batteries are connected or disconnected to replenish the electric power of the batteries with this connector supply system, an instant discharge may happen because of the potential differences between the charger connector and the battery connector.
[003] To meet the ever-increasing demand to recharge devices, a wireless charging technology for wirelessly charging the battery of a portable terminal was developed and this wireless charging technology has been implemented. The wireless charging technology obviates the need for a peripheral device and a power connection cable to charge a portable terminal, thereby increasing convenience to users.
[004] Therefore, there is a need of a system which overcomes the aforementioned problems.
SUMMARY
[005] Embodiments of the present disclosure present technological improvements as solutions to one or more of the above-mentioned technical problems.
[006] Before the present subject matter relating to an apparatus for wireless power charging system, it is to be understood that this application is not limited to the particular system described, as there can be multiple possible embodiments which are not expressly illustrated in the present disclosure. It is also to be understood that the terminology used in the description is for the purpose of describing the implementations or versions or embodiments only and is not intended to limit the scope of the present subject matter.
[007] This summary is provided to introduce aspects related to an apparatus for wireless power charging system. This summary is not intended to identify essential features of the claimed subject matter nor is it intended for use in determining or limiting the scope of the present subject matter.
[008] In one embodiment, an apparatus for wireless power charging system includes a battery, a power circuitry, a converter unit, a transmitting core, a controller unit, and an external electronic device. The converter unit converts a power signal to a resonant power signal and transmits the resonant power signal to a plurality of power receiving devices via the transmitting core. The controller to provide a different code to each of the power receiving devices and to control the converter unit to transmit the resonant power signal based on the charge status information. The external electronic device provides power to charge the battery.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[009] The foregoing detailed description of embodiments is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the disclosure, there is shown in the present document example constructions of the disclosure; however, the disclosure is not limited to the specific system or method disclosed in the document and the drawings.
[0010] The present disclosure is described in detail with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer various features of the present subject matter.
[0011] Figure 1 illustrates a schematic configuration view of a wireless power charging system, in accordance with the present invention.
[0012] Figure 2 illustrates a block diagram of a wireless power transmission apparatus, in accordance with the present invention.
[0013] Figure 3 illustrates a virtual view illustrating a connection state between a charging system and portable terminals, according to an exemplary embodiment of the present invention.
[0014] Figure 4 illustrates the structure of wireless charging apparatus, according to an embodiment of the present invention.
[0015] In the above accompanying drawings, a non-underlined number relates to an item identified by a line linking the non-underlined number to the item. When a number is non-underlined and accompanied by an associated arrow, the non-underlined number is used to identify a general item at which the arrow is pointing.
[0016] Further, the figures depict various embodiments of the present subject matter for purposes of illustration only. One skilled in the art will readily recognize from the following discussion that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the present subject matter described herein.
DETAILED DESCRIPTION
[0017] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words "comprising," "having," "containing," and "including," and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Although an apparatus for wireless power charging system, similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, an apparatus for wireless power charging system is now described.
[0018] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. For example, although the present disclosure will be described in the context of an apparatus for wireless power charging system, one of ordinary skill in the art will readily recognize an apparatus for wireless power charging system can be utilized in any situation. Thus, the present disclosure is not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein.
[0019] In one embodiment, an apparatus for wireless power charging system includes a battery, a power circuitry, a converter unit, a transmitting core, a controller unit, and an external electronic device. The converter unit converts a power signal to a resonant power signal and transmits the resonant power signal to a plurality of power receiving devices via the transmitting core. The controller to provide a different code to each of the power receiving devices and to control the converter unit to transmit the resonant power signal based on the charge status information. The external electronic device provides power to charge the battery.
[0020] In another implementation, during a standby mode, the controller controls the converter unit to transmit a signal at a predetermined period to detect presence of an object.
[0021] In another implementation, the identification code is sent to each of the power receiving devices via the transmitting core.
[0022] In another implementation, the conversion circuit is used to receive an output voltage and an output current of the power supply and convert at least one of an output voltage and an output current of the power supply.
[0023] In another implementation, the wireless transmitting circuit is also used to generate the electromagnetic signal according to the converted voltage and current.
[0024] In another implementation, the power information indicative of a power level with respect to a battery of each of the plurality of external electronic devices.
[0025] In another implementation, the controller is configured to determine whether each of the power receiving devices is available for charging based on the charge status information received from each of the power receiving devices.
[0026] In another implementation, stop transmitting the resonant power signal and operating in standby mode if none of the power receiving devices are available for charging.
[0027] In an embodiment, a plurality of wireless power receiving apparatuses are fully charged, the wireless power transmission system will be automatically changed to a standby mode, wherein the initial pulse signal is sending out. By doing so, the charging efficiency will be maximized while the loss of the electricity will be minimized.
[0028] Figure 1 illustrates a schematic configuration view of a wireless power charging system and Figure 2 illustrates a block diagram of a wireless power transmission apparatus.
[0029] In an embodiment, the wireless power transmission apparatus 10 includes a power transmission apparatus case 11 as an outside body, housing therein a main control unit 21 and a resonant converter unit 23, which transmit an electric signal to the wireless power receiving apparatus 30 via a primary charge core 13; an output signal conversion module 22 for transmitting a converted electric signal to the resonant converter unit 23 by a control signal from the main control unit 21; and a received signal process module 24, which processes a signal transmitted from the wireless power receiving apparatus 30 via the primary charge core 13 and sends the processed signal out to the main control unit 21.
[0030] In an embodiment, the power transmission apparatus case 11 (of the power transmission apparatus 10) includes a power on/off switch on the front side thereof; an input panel for signal input; and a display panel 14 showing the charging status of the wireless power receiving apparatus 30 and normal/abnormal status of the wireless power transmission apparatus 10. Inside the power transmission apparatus case 11, a power supply unit 25 is installed. Therefore, the operator can use the wireless power charging system A according to the displayed messages on the display panel 14 of the wireless power transmission apparatus 10.
[0031] The main control unit 21 of the wireless power transmission apparatus 10 may include a power supply block 211 coupled with the power supply unit 25 for the power supply to the wireless power transmission apparatus 10; a signal output block 212 for sending the signal to show the status on a display panel 14; a gate output signal process block 213 coupled with a output signal conversion module 22 for transmitting the transferred power 5 signal from the primary charge core 13; a received signal process block 214 for processing the transmitted signals from a received signal process module 24 which processes the transmission signal from the wireless power receiving apparatus 30; and a main controller 210 which controls the power supply block 211, the signal output block 212, the gate output signal process block 213, and the received signal process block 214.
[0032] In an embodiment, the wireless power receiving apparatus 30 can be included inside the portable electronic devices, for example, cellular phones, PDAs, PMPs, DMB terminals, MP3s or notebook computers.
[0033] Figure 3 illustrates a virtual view illustrating a connection state between a charging system and portable terminals.
[0034] In an embodiment, the charging system 300 preferably includes a multi-band RF transceiver for operating in a plurality of frequency bands. The charging system 300 provides an RF-based wireless charging function to a portable terminal within a chargeable distance, namely a chargeable radius. In one example, the wireless charger receives the transmission via antenna (ANT 2) from the charging system 300, provided that the portable terminals are within the chargeable radius. The charging system 300 further includes an output level controller (not shown) for controlling the output level of an RF used to wirelessly charge a portable terminal. Therefore, the charging system 300 may transmit an output level-controlled frequency (e.g., a frequency with an increased or decreased output level) by controlling the output level controller and the RF transceiver, thereby controlling the efficiency of wireless charging of a portable terminal.
[0035] Figure 4 illustrates the structure of wireless charging apparatus.
[0036] In an embodiment, the wireless charging device 420 may include a wireless transmission circuit 421 and a first communication control circuit 422. The wireless transmission circuit 421 is used to transmit electromagnetic signals. In some embodiments, the wireless transmission circuit 421 may include a wireless transmission driving circuit and a transmission coil or a transmission antenna (not shown). A radio transmission drive circuit is used to generate a high frequency alternating current. A transmitting coil or transmitting antenna is used to convert a high-frequency alternating current into an electromagnetic signal and transmit it. The first communication control circuit 422 is used to wirelessly communicate with the charging standby facility 430 in the process of the wireless charging device 420 wirelessly charging the charging standby facility 430. Specifically, the first communication control circuit 422 may communicate with the second communication control circuit 435 in the charging standby facility 430. The embodiment of the present invention is a communication method between the first communication control circuit 422 and the second communication control circuit 435 and the communication transmitted and received between the first communication control circuit 422 and the second communication control circuit 435. The information is not specifically limited, and will be described in detail below in conjunction with specific examples.
[0037] In an embodiment, the current detection circuit is used to sample the output current of the radio receiving circuit 431 and transmit the sampled current value to the second communication control circuit 435. In some embodiments, the current detection circuit may sample the output current of the wireless receiving circuit 431 by a current sensing resistor and a current detector. The charging process of the battery may include at least one of a trickle charging step, a constant current charging step, and a constant voltage charging step.
[0038] Although the description provides implementations of a system for controlling speed of the vehicle and method thereof, it is to be understood that the above descriptions are not necessarily limited to the specific features or methods or systems. Rather, the specific features and methods are disclosed as examples of implementations for the system for controlling speed of a vehicle.
, Claims:We claim:
1. An apparatus for wireless power charging comprising:
a. a power source unit configured to generate an alternating current (AC) signal;
b. a power conversion unit adapted to convert the AC signal into a high-frequency alternating current signal;
c. a resonant circuit comprising a transmitter coil and a capacitor, wherein the transmitter coil is inductively coupled to the power conversion unit and the capacitor is electrically connected to the transmitter coil;
d. a control unit configured to modulate the high-frequency alternating current signal and control the power transmitted through the resonant circuit;
e. a receiver unit comprising a receiver coil tuned to the resonant frequency of the resonant circuit;
f. a rectification unit connected to the receiver coil, configured to rectify the received alternating current signal, and generate a direct current (DC) output; and
g. an output interface for supplying the DC output to a load.
2. The apparatus of claim 1, further comprising a communication interface configured to establish communication between the control unit and an external device for monitoring and controlling the wireless power charging process.
3. The apparatus of claim 1, wherein the control unit is adapted to dynamically adjust the power transmitted through the resonant circuit based on the distance between the transmitter coil and the receiver coil.
4. The apparatus of claim 1, wherein the resonant circuit further comprises a feedback loop connected to the receiver unit, the feedback loop providing information on the received power to the control unit for power regulation.
5. An apparatus for wireless power charging as claimed in claim 1, wherein the power conversion unit includes a high-frequency inverter to generate the high-frequency alternating current signal.
6. The apparatus of claim 1, wherein the resonant circuit further comprises a plurality of transmitter coils and a switching unit configured to selectively energize one or more of the transmitter coils based on the position and power requirements of the receiver unit.
7. The apparatus of claim 1, wherein the control unit is further configured to detect foreign objects or obstacles within the proximity of the wireless power charging system and adjust the power transmission or deactivate the system to prevent safety hazards.
8. The apparatus of claim 1, wherein the control unit is configured to optimize the wireless power transfer efficiency by dynamically adjusting the resonance frequency of the resonant circuit.
9. The apparatus of claim 1, wherein the receiver unit is adapted to receive wireless power from multiple transmitter coils simultaneously and combine the received power for enhanced charging capability.
10. An apparatus for wireless power charging as claimed in claim 1, wherein the output interface comprises a USB port, a wireless charging pad, or a direct electrical connection, suitable for charging various types of electronic devices.