Description:TECHNICAL FIELD
[001] The present invention relates generally to a wireless charging system and method thereof.
BACKGROUND
[002] Along with the development trend of intellectualization faster and faster, the manual operation of the mower is changed into the intelligent operation, so that the mowing progress of people is obviously accelerated, and great convenience is brought. Conventional loss power algorithms are not capable of detecting small NFC devices (or RFIDs) such as NFC stickers. This is due to the fact that such a device is designed to effectively capture the magnetic field. Such a device becomes hot and is damaged by a small amount of power that is well below the lost power detection threshold of a conventional wireless charger. Thus, NFC and RFID devices can be damaged by A4WP wireless charging magnetic fields.
[003] However, the existing intelligent lawn mower generally adopts a wired charging mode, so that a wired charging station needs to be built on the lawn, and vegetation cannot grow normally in the place covered by the charging station. The wired charging station usually forms a protrusion relative to the ground, and the pole piece is sharp, so that the old and the children are easily tripped and cause accidental injuries. The wired charging station needs the pole piece to expose, is easily corroded and oxidized to cause poor contact, and the wired charging often can have problems, and the pole piece exposes and also easily takes place to reveal electricity simultaneously.
[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 a wireless charging system and method thereof, 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 a wireless charging system and method thereof. 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 an embodiment, a wireless charging system, the system includes a charging base station, at least one charging pad, a control unit and a communication module. The charging base station including a power source. At least one charging pad positioned on or in proximity to the charging base station, said charging pad having a resonant inductive coupling structure for wireless power transmission. The control unit is configured to control the power output from the power source to the charging pad. The communication module for data exchange with a compatible device.

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 diagram of a wireless charging system according to an embodiment.
[0012] Figure 2 illustrates a plan view showing an example of position alignment processing.
[0013] Figure 3 illustrates a measured polling signal with a 6.78 MHz carrier and a response from an exemplary NFC device.
[0014] 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.
[0015] 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
[0016] 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 a wireless charging system and method thereof, similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, a wireless charging system and method thereof is now described.
[0017] 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 a wireless charging system and method thereof, one of ordinary skill in the art will readily recognize a wireless charging system and method thereof 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.
[0018] In an embodiment, a wireless charging system, the system includes a charging base station, at least one charging pad, a control unit and a communication module. The charging base station including a power source. At least one charging pad positioned on or in proximity to the charging base station, said charging pad having a resonant inductive coupling structure for wireless power transmission. The control unit is configured to control the power output from the power source to the charging pad. The communication module for data exchange with a compatible device.
[0019] In another implementation, the resonant inductive coupling structure of the charging pad operates at a specific resonant frequency for efficient power transmission.
[0020] In another implementation, a detection system for identifying the presence and alignment of a compatible device and adjusting the power output based on the detected position and power requirements.
[0021] In one embodiment, a method for wirelessly charging a compatible device, the method includes the step of detecting the presence and alignment of the compatible device on the charging pad. The method includes the step of wirelessly transmitting power from the charging pad to the compatible device. The method includes the step of monitoring and adjusting the power output to optimize charging efficiency.
[0022] In another implementation, the detection of the compatible device's presence and alignment is performed using a combination of proximity sensors and communication signals.
[0023] In another implementation, the method includes the step of exchanging data between the charging pad and the compatible device to determine the device's power requirements and charging status.
[0024] In another implementation, the charging pad further includes a safety feature to prevent overcharging or overheating of the compatible device.
[0025] In another implementation, the communication module is configured to enable remote monitoring and control of the charging system over a network.
[0026] Figure 1 illustrates a schematic diagram of a wireless charging system according to an embodiment.
[0027] In an embodiment, the charging detection module can detect the current or the voltage of the rechargeable battery when detecting whether the rechargeable battery needs to be charged, and for convenient detection, the embodiment adopts a mode of detecting the voltage of the rechargeable battery to detect whether the rechargeable battery needs to be charged. The charging detection module judges that the rechargeable battery needs to be charged when detecting that the voltage of the rechargeable battery is smaller than a preset minimum value, and judges that the rechargeable battery does not need to be charged when detecting that the voltage of the rechargeable battery is larger than or equal to a preset maximum value. A transmitting device and a receiving device is installed on the autonomous mobile device, the transmitting device includes a wireless charging transmitting terminal 110a, the receiving device includes a wireless charging receiving terminal 120a, a charging management device 130a connected to the wireless charging receiving terminal 120a, and a charging battery 140a connected to the charging management device 130a, and the wireless charging receiving terminal 120a and the wireless charging transmitting terminal 110 are respectively provided with an energizing magnet 150a and an energizing magnet 151 a; or one of the wireless charging receiving terminal and the wireless charging transmitting terminal is provided with a permanent magnet, and the charging management device 130.
[0028] In an embodiment, the charging detection module is used for detecting whether the rechargeable battery needs to be charged or not;
[0029] In an embodiment, the power-on module is used for electrically connecting the rechargeable battery with the receiving end when the rechargeable battery needs to be charged;
[0030] In an embodiment, the magnetic force detection module is used for detecting the magnetic force between the wireless charging receiving end and the wireless charging transmitting end;
[0031] In an embodiment, the control module is used for controlling the autonomous mobile equipment to move to the transmitting terminal according to the magnetic force between the wireless charging receiving terminal and the wireless charging transmitting terminal and aligning the receiving terminal and the transmitting terminal to charge the rechargeable battery. The control module aligns the receiving end with the transmitting end when the value of the magnetic force is maximum. When the receiving end is aligned with the transmitting end, if the electrified magnet of the receiving end does not move right above the electrified magnet of the transmitting end, the magnetic force between the receiving end and the transmitting end cannot reach the maximum value, and when the magnetic force reaches the maximum value, the electrified magnet of the receiving end just moves right above the electrified magnet of the transmitting end, and at the moment, the receiving end is aligned with the transmitting end, and then wireless charging can be started.
[0032] The wireless charging system is when the receiving terminal is close to the transmitting terminal distance, and the circular telegram magnet of the two can align under magnetic force (including direction and size) and charge, but when the two distance was far away, magnetic force between the two was less, then can't look for corresponding transmitting terminal, and for this reason, wireless charging system still including setting up in mobile device's recognition device for discernment transmitting terminal makes control module guide mobile device move to the transmitting terminal. The identification device can be a signal line, a GPS/DGPS infrared identification module, an image identification module or other specific devices as long as the transmitting end can be identified.
[0033] The power supply controller, when receiving the position alignment start signal SP, starts power supply from the power supply coil to the power reception coil.
[0034] Figure 2 illustrates a plan view showing an example of position alignment processing.
[0035] In an embodiment, the traveling controller 209 causes the mower 2 to travel back and forth and from side to side and then turns the mower 2, embodiments of the present invention are not limited to this. The second traveling controller 209 may cause the mower 2 to travel back and forth and from side to side without turning the mower 2. Furthermore, the second traveling controller 209 may turn the mower 2 without causing the mower 2 to travel back and forth and from side to side. The charging controller 210 ends the charging of the battery 17 when the charging power amount of the battery 17 is equal to or more than the predetermined threshold, embodiments of the present invention are not limited to this. For example, the charging controller 210 may end the charging of the battery 17 when the battery 17 is fully charged. Furthermore, for example, the charging controller 210 may end the charging of the battery 17 when a predetermined time elapses from the start of the charging of the battery 17.
[0036] In an embodiment, the determiner performs the following processing when the charging station includes a plurality of the power supply coils. That is, of the plurality of power supply coils, the determiner determines the power supply coil in which the power PW detected by the second detector is equal to or more than the power threshold. The charging controller charges the battery through the power reception of the power reception coil only from the power supply coil 331 determined by the determiner.
[0037] The signal indicating the position of the charging station is, for example, a signal having a specific frequency distinguishable from other signals. The other signals are, of signals receivable by the first receiver of the mower, signals except for the signal indicating the position of the charging station. The other signals are, for example, signals of wireless communication such as Wi-Fi.
[0038] Figure 3 illustrates a measured polling signal with a 6.78 MHz carrier and a response from an exemplary NFC device.
[0039] In an embodiment, the data shown was performed as an NFC tag based on all the major NFC standards (i.e., ISO 14443, ISO 18092 and ISO 15693) and all tags could provide an appropriate response to the modulated polling signal on 6.78 MHz have. The response signal may also be decoded by an NFC reader operating at 6.78 Mhz. In one embodiment, the data rate of the signal may be half of NFC and the bit duration may be twice that of NFC (due to operating with a carrier of 6.78 MHz). Feedback is from the load modulation generated by the NFC tag. The left side shows a part of an NFC-like polling sequence. The right side shows a load modulation answer from an NFC device (or NFC tag). The left-hand side shows the charge signal as a pure sine wave modulated onto the carrier signal to cause NFC-type polling at the 6.78 MHz frequency.
[0040] A power transfer state, the NFC-type polling sequence can be modulated with a 6.78 MHz charge signal. In one embodiment, the signal may periodically repeat the polling sequence for all types of NFC tags / devices. Given the fast modulation of the NFC polling signal, the wireless recharging receiver will have no impact on the wireless recharging user experience and performance. From the perspective of detecting NFC tags, continuous polling allows for potentially troubling NFC devices to enter the active charging field and to detect early detection of damage. The following non-limiting examples are provided to further illustrate the disclosed principles. Example 1 includes a transmitter that transmits one or more periodic A4WP beacons, a wireless device that detects a response from an external device responsive to the one or more A4WP beacons and transmits the response to a Bluetooth Low Energy (BLE) a detector that identifies the magnetic field as one of an advertisement, a Near Field Communication (NFC) load modulation, an impedance change, or a combination thereof, Lt; RTI ID = 0.0 > a < / RTI >.
[0041] Although the description provides implementations of a wireless charging system 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 a wireless charging system and method thereof. , Claims:We claim:
1. A wireless charging system comprising:
a. a charging base station including a power source;
b. at least one charging pad positioned on or in proximity to the charging base station, said charging pad having a resonant inductive coupling structure for wireless power transmission;
c. a control unit configured to control the power output from the power source to the charging pad; and
d. a communication module for data exchange with a compatible device.
2. The wireless charging system of Claim 1, wherein the resonant inductive coupling structure of the charging pad operates at a specific resonant frequency for efficient power transmission.
3. The wireless charging system of Claim 1, further comprising a detection system for identifying the presence and alignment of a compatible device and adjusting the power output based on the detected position and power requirements.
4. A method for wirelessly charging a compatible device using the system of Claim 1, comprising: a. detecting the presence and alignment of the compatible device on the charging pad; b. wirelessly transmitting power from the charging pad to the compatible device; and c. monitoring and adjusting the power output to optimize charging efficiency.
5. The method of Claim 4, wherein the detection of the compatible device's presence and alignment is performed using a combination of proximity sensors and communication signals.
6. The method of Claim 4, further comprising the step of exchanging data between the charging pad and the compatible device to determine the device's power requirements and charging status.
7. A wireless charging system as described in Claim 1, wherein the charging pad further includes a safety feature to prevent overcharging or overheating of the compatible device.
8. The wireless charging system of Claim 1, wherein the communication module is configured to enable remote monitoring and control of the charging system over a network.