Description:TECHNICAL FIELD
[0001] The present technical invention relates to a wireless charging module combined with a heat dissipation unit and method thereof.
BACKGROUND
[0002] Many portable electronic devices are powered by batteries. Rechargeable batteries are often used to avoid the cost of replacing conventional dry-cell batteries and to conserve precious resources. However, recharging batteries with conventional rechargeable battery chargers requires access to an alternating current (AC) power outlet, which is sometimes not available or not convenient. It would, therefore, be desirable to derive power for a battery charger from EM radiation. A wireless charger has been introduced to transmit charging wirelessly and supply power to a wireless charging receiver for wireless charging, without relying on a charging cable. For example, when a mobile phone is charged, wireless charging is directly performed without connecting the mobile phone to a charging cable. There are a plurality of implementations for the wireless charging technology.
[0003] Currently, a majority of wireless charging transmitters for wireless charging in the market are single-coil wireless charging transmitters based on the Qi standard. Interaction between a wireless charging transmitter and a wireless charging receiver includes three phases: selection, ping, and power transfer. In the ping phase, the wireless charging transmitter emits ping pulse energy in an attempt to find whether an object contains a wireless charging receiver. Because the Qi standard specifies an upper limit of power of the ping pulse energy emitted by the wireless charging transmitter in the ping phase, a receiving coil of the wireless charging receiver is restricted by reactive components and transfer efficiency, and a coupling factor between the wireless charging receiver and the wireless charging transmitter is relatively low. Therefore, there is a technical defect that the degree of freedom is relatively low. Also, during power transmission, the amount of heat generated is relatively high.
[0004] Therefore, there is a need of the present invention which overcomes the aforementioned technical problems.
SUMMARY
[0005] Embodiments of the present disclosure present technological improvements as solutions to one or more of the above-mentioned technical problems.
[0006] Before the present subject matter relating to a wireless charging module combined with a heat dissipation unit 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.
[0007] This summary is provided to introduce aspects related to a wireless charging module combined with a heat dissipation unit 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.
[0008] In an embodiment, a wireless charging module is disclosed. The wireless charging module includes a multiple antenna ports, a communications module, a shield unit, a rectifying unit and a control unit. The multiple antenna ports are configured to receive wireless power from two or more antennas and is configured to transmit a beacon signal to a transmitter. The communications module, wherein the communications module is configured to send the power transfer instruction to the wireless charging transmitter. The shield unit is disposed on one surface of the antenna unit to induce a magnetic field. The rectifying unit is for each of the multiple antenna ports and the rectifying unit is configured to convert received wireless power in RF power to direct current (DC) power, and to output the DC power to an external device. The control unit is configured to switch the integrated circuit between filtering data, rectifying RF power, and transmitting a beacon signal.
[0009] In another embodiment, a heat dissipation module includes a plate-like base material layer having a predetermined area and includes at least one slot having a predetermined length for releasing heat generated during wireless charging to the outside. The heat dissipation unit is coupled with the wireless charging module.
[0010] In another embodiment, a method for working of wireless charging module combined with a heat dissipation unit is disclosed. The method includes the step of transmitting, from at least one of multiple antennas of the client device, a beacon signal. The method includes the step of generating the power transfer instruction by adjusting the communications module. The method includes the step of converting received wireless power in RF power to direct current (DC) power, and to output the DC power to an external device or user device via rectifying unit. The method includes the step of releasing heat generated during wireless charging to the outside via heat dissipation unit.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
[0011] The detailed description is described 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 reference like features and modules.
[0012] Figure 1 illustrates a schematic architectural diagram of a wireless charging system according to an embodiment of this application.
[0013] Figure 2 illustrates an example wireless power delivery environment depicting wireless power delivery from one or more wireless transmitters to various wireless devices within the wireless power delivery environment.
[0014] Figure 3 illustrates an aspect of a heat radiating unit for wireless charging according to an embodiment of the present invention.
[0015] Figure 4 illustrates a schematic diagram of a degree of freedom according to an embodiment of this application.
[0016] Figure 5 illustrates a cross-sectional view showing another example of the shielding unit.
[0017] It should be appreciated by those skilled in the art that any block diagrams herein represent conceptual views of illustrative methods embodying the principles of the present invention. Similarly, it will be appreciated that any flow charts, flow diagrams, and the like represent various processes which may be substantially represented in computer readable medium and so executed by a computer or processor, whether or not such computer or processor is explicitly shown.
DETAILED DESCRIPTION
[0018] The invention will now be described with reference to the accompanying drawings and embodiments which do not limit the scope and ambit of the invention. The description provided is purely by way of example and illustration.
[0019] One or more embodiments are provided so as to thoroughly and fully convey the scope of the present invention to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present invention. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present invention. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
[0020] The terminology used, in the present invention, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present invention. As used in the present invention, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open ended transitional phrases and therefore specify the presence of stated features, integers, steps, operations, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The particular order of steps disclosed in the method and process of the present invention is not to be construed as necessarily requiring their performance as described or illustrated. It is also to be understood that additional or alternative steps may be employed.
[0021] In an embodiment, a wireless charging module is disclosed. The wireless charging module includes a multiple antenna ports, a communications module, a shield unit, a rectifying unit and a control unit. The multiple antenna ports are configured to receive wireless power from two or more antennas and configured to transmit a beacon signal to a transmitter. The communications module, wherein the communications module is configured to send the power transfer instruction to the wireless charging transmitter. The shield unit is disposed on one surface of the antenna unit to induce a magnetic field. The rectifying unit is for each of the multiple antenna ports and the rectifying unit is configured to convert received wireless power in RF power to direct current (DC) power, and to output the DC power to an external device. The control unit is configured to switch the integrated circuit between filtering data, rectifying RF power, and transmitting a beacon signal.
[0022] In another embodiment, a heat dissipation module includes a plate-like base material layer having a predetermined area and includes at least one slot having a predetermined length for releasing heat generated during wireless charging to the outside. The heat dissipation unit is coupled with the wireless charging module.
[0023] In another implementation, the charging module includes a processor and a memory.
[0024] In another implementation, the processor is configured for the wireless charging receiver to receive, by using the first oscillation circuit, the pulse energy emitted by the wireless charging transmitter.
[0025] In another implementation, the memory is configured to store the process executed by the processor, wherein the memory also stores the connectivity of the previously connected user device.
[0026] In another implementation, the transmitter is configured to wirelessly transmit RF power using multiple open paths from the transmitter to the client device.
[0027] In another implementation, the adjustment unit is specifically configured for the wireless charging receiver to adjust a voltage value of the communication resistor-capacitor module by adjusting a capacitor or resistor in the communication module.
[0028] In another implementation, a thermally conductive adhesive formed on at least one of an upper surface and a lower surface of the base material layer of the wireless charging module.
[0029] In another embodiment, a method for working of wireless charging module combined with a heat dissipation unit is disclosed. The method includes the step of transmitting, from at least one of multiple antennas of the client device, a beacon signal. The method includes the step of generating the power transfer instruction by adjusting the communications module. The method includes the step of converting received wireless power in RF power to direct current (DC) power, and to output the DC power to an external device or user device via rectifying unit. The method includes the step of releasing heat generated during wireless charging to the outside via heat dissipation unit.
[0030] In another implementation, the method includes the step of detecting a received power level from each of the multiple antennas.
[0031] Figure 1 illustrates a schematic architectural diagram of a wireless charging system according to an embodiment of this application.
[0032] In an embodiment, the wireless charging system includes a wireless charging receiver 10 and a wireless charging transmitter 11. The wireless charging transmitter 11 may transfer power to the wireless charging receiver to perform wireless charging on the wireless charging receiver. The wireless charging receiver 10 specifically includes a receiving coil, a communications module, a rectifier module, a voltage step-down module, and a processor. The communications module specifically includes a communication modulation module. The receiving coil specifically includes a second receiving coil. The wireless charging transmitter 11 includes a transmitting coil and wireless charging transmitter related modules. Alternatively, an implementation of the wireless charging transmitter 11 and the wireless charging receiver 10 may be parallel-parallel compensation (PP), series-parallel compensation (SP), or parallel-series compensation (PS) equivalent circuit diagrams. The specific implementation is not limited herein, and only SS compensation is used for description in this application.
[0033] The wireless charging transmitter related modules may include a direct current power supply of the wireless charging transmitter, a direct current/alternating current conversion module of the wireless charging transmitter, a series matching capacitor of the wireless charging transmitter, and a control module of the wireless charging transmitter. The wireless charging transmitter processes, by using the wireless charging transmitter related modules and the transmitting coil, a direct current (direct current, DC) input to the wireless charging transmitter, and then transmits the direct current to the receiving coil of the wireless charging receiver 10 by using the transmitting coil.
[0034] The wireless charging receiver 10 provided in this embodiment of this application may further use a magnetic resonance wireless charging technology, a near field communication (near field communication, NFC) wireless charging technology, or a microwave wireless charging technology, in addition to an electromagnetic induction wireless charging technology. The wireless charging receiver 10 may be mobile user equipment (user equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, a user terminal, or a user agent. The access terminal may be a cellular phone, a handheld device having a wireless communication function, a computing device, an in-vehicle device, a wearable device, a terminal in a 5G system, a terminal in a future evolved public land mobile network (public land mobile network, PLMN), or the like. The wireless charging receiver according to some embodiments may be a flexible electronic device. In addition, the wireless charging receiver according to the embodiments of the present disclosure is not limited to the foregoing devices and may be a new wireless charging receiver introduced with advancement of technologies.
[0035] The processor delivers a power transfer instruction to an ASK module in the communications module, and the ASK module in the communications module may adjust the communication modulation module to implement intraband communication between the wireless charging receiver and the wireless charging transmitter. The processor may be connected to the receiving coil 101, the communications module, the rectifier module, and the voltage step-down module respectively, and is configured to exchange a control parameter with each module to implement control on each module.
[0036] The rectifier module specifically includes an uncontrolled rectifier module or a synchronous rectifier module. The uncontrolled rectifier module includes at least one diode. The synchronous rectifier module includes at least one metal oxide semi-conductor field effect transistor (metal oxide semi-conductor field effect transistor, MOSFET). When the module included in the rectifier module is the uncontrolled rectifier module, the oscillation circuit in the wireless charging receiver 10 is referred to as a diode full-bridge rectifier circuit. When the module included in the rectifier module is the synchronous rectifier module, the oscillation circuit in the wireless charging receiver 10 is referred to as a switching transistor synchronous rectifier circuit.
[0037] Figure 2 illustrates an example wireless power delivery environment depicting wireless power delivery from one or more wireless transmitters to various wireless devices within the wireless power delivery environment.
[0038] In an embodiment, each transmitter 101 (also referred to herein as a “charger”, “array of antennas” or “antenna array system”) can include multiple antennas 104, e.g., an antenna array including hundreds or thousands of spaced-apart antennas, that are each capable of delivering wireless power to wireless devices 102. Each transmitter 101 may also deliver wireless communication signals to wireless devices 102. Additionally, the transmitter 101 may include a time delayed retro directive radio frequency (RF) holographic array that delivers wireless RF power that matches the client antenna patterns in three-dimensional (3D) space (polarization, shape & power levels of each lobe). The transmitters 101.a-101.n are connected to a power source such as, for example, a power outlet or source connecting the transmitters to a standard or primary alternating current (AC) power supply in a building. Alternatively, or additionally, one or more of the transmitters 101.a-101.n can be powered by a battery or via other power providing mechanism. It is appreciated that use of the term “array” does not necessarily limit the antenna array to any specific array structure. That is, the antenna array does not need to be structured in a specific “array” form or geometry. Furthermore, as used herein he term “array” or “array system” may be used include related and peripheral circuitry for signal generation, reception and transmission, such as radios, digital logic and modems. The power delivery antennas 104 a are configured to provide delivery of wireless radio frequency power in the wireless power delivery environment. The data communication antennas are configured to send data communications to, and receive data communications from, the power receiver clients 103.1-103.n and/or the wireless devices 102.1-102.n. The transmitter 101 and the power receiver clients 103.1-103.n can each include a data communication module for communication via a data channel. Alternatively, or additionally, the power receiver clients 103.1-103.n can direct the wireless devices 102.1-102.n to communicate with the transmitter via existing data communications modules.
[0039] Figure 3 illustrates an aspect of a heat radiating unit for wireless charging according to an embodiment of the present invention.
[0040] In an embodiment, the heat radiating unit 300b may be formed in a direction perpendicular to the pattern 300 of the wireless charging antenna. In this case, a region where the pattern 300 of the wireless charging antenna is formed in a straight line may be formed in a direction perpendicular to the longitudinal direction of the pattern 300 of the wireless charging antenna. In addition, a region where the pattern 300 of the wireless charging antenna is curved may be formed in a direction perpendicular to a tangent line of the pattern 300 of the wireless charging antenna.
[0041] Figure 4 illustrates a schematic diagram of a degree of freedom according to an embodiment of this application.
[0042] In an embodiment, a range of space in which the wireless charging receiver 410 can be charged when placed on a surface of the wireless charging transmitter 411. The wireless charging receiver 410 moves outward from a central point of the wireless charging transmitter 411 to a boundary of a non-chargeable range after the wireless charging receiver 410 establishes a charging connection to the wireless charging transmitter 411, where a range of space within the non-chargeable boundary is denoted as A. It should be noted that A is a three-dimensional variable representing the range of space and that A in indicates a cross-sectional radius value of the three-dimensional space. A boundary condition of the non-chargeable range is as follows: The power emitted by the wireless charging transmitter 411 to the wireless charging receiver 410 reaches an upper limit of the power that the wireless charging transmitter 411 can output. In this case, the voltage Vrect output by the wireless charging receiver 10 after the wireless charging receiver 10 receives the output power meets a working voltage threshold of the processor in the wireless charging receiver 410. In this case, the power emitted by the wireless charging transmitter 411 has reached the upper limit of the power that the wireless charging transmitter 411 can transfer. Therefore, when the wireless charging receiver 410 continues to move away from the wireless charging transmitter 411, the voltage Vrect output by the wireless charging receiver 410 after the wireless charging receiver 410 receives the power transferred from the wireless charging transmitter 411 is lower than the working voltage threshold of the processor, the processor cannot work normally, the charging connection established between the wireless charging receiver 410 and the wireless charging transmitter 411 is disconnected, and the wireless charging receiver 10 cannot be charged.
[0043] Figure 5 illustrates a cross-sectional view showing another example of the shielding unit.
[0044] In an embodiment, the first sheet layer 121 may be formed of a plurality of band-shaped sheet layers of two or more layers. The shield unit 12 ' is formed only of the first sheet layer 121 ', the first sheet layer 121 ' is formed by stacking a plurality of sheet layers 121a, 121b, and 121c, and the sheet layers are separated from each other by fine pieces, an adhesive layer 121d made of a nonconductive material is disposed between the sheet layers, so that the adhesive layer can penetrate between a pair of sheet layers stacked on each other. Thus, the adhesive layer 121d disposed between the pair of sheet layers can also perform the function of insulating the plurality of fine blocks forming each sheet layer. At least one of the upper and lower surfaces of the shielding unit 12' may include a protective film 124. The adhesive layer may be formed of an adhesive or may be formed by applying an adhesive to one or both surfaces of a film-shaped substrate. Wherein the substrate layer is formed of a material having excellent thermal conductivity. For example, the base material layer may be formed of one or a combination of copper, aluminum, and graphite. The base layer is not limited to the above-mentioned materials and may be formed of a metal material having a thermal conductivity of 200W/m · K or more.
[0045] The heat dissipation unit 100 can improve the wireless charging efficiency and also improve the heat dissipation effect by suppressing the generation of eddy currents on the base material layer.
[0046] The foregoing description of the invention has been set merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the substance of the invention may occur to person skilled in the art, the invention should be construed to include everything within the scope of the invention.

, Claims:We claim:
1. A wireless charging module combined with a heat dissipation unit, comprising:
a multiple antenna ports for receiving wireless charging signals;
a communications module configured to communicate with external devices for control and data exchange purposes;
a shield unit positioned to minimize electromagnetic interference during wireless charging operations;
a rectifying unit for converting received wireless charging signals into usable electrical power;
a control unit to manage the operation of the wireless charging module and the heat dissipation unit.
2. The wireless charging module as claimed in claim 1, wherein the multiple antenna ports include at least two antenna ports for enhancing charging efficiency and reliability.
3. The wireless charging module as claimed in claim 1, further comprising a thermal sensor integrated within the heat dissipation unit for monitoring temperature changes during charging operations.
4. The wireless charging module as claimed in claim 1, wherein the shield unit comprises a metallic enclosure configured to contain electromagnetic emissions within the module.
5. The wireless charging module as claimed in claim 1, wherein the rectifying unit includes a plurality of diodes configured to convert alternating current (AC) wireless charging signals into direct current (DC) electrical power.
6. The wireless charging module as claimed in claim 1, wherein the control unit is programmed to adjust charging parameters based on real-time data received from the communications module and the thermal sensor.
7. The wireless charging module as claimed in claim 1, further comprising a heat dissipation unit comprising one or more heat sinks or heat pipes configured to dissipate heat generated during wireless charging operations.
8. The wireless charging module as claimed in claim 1, wherein the heat dissipation unit is integrated into the structure of the module to ensure efficient heat dissipation without obstructing the wireless charging functionality.
9. A method for working of wireless charging module combined with a heat dissipation unit, comprising:
receiving wireless charging signals through multiple antenna ports;
communicating with external devices via a communications module;
shielding electromagnetic emissions using a shield unit;
converting received wireless charging signals into electrical power using a rectifying unit, and;
managing the operation of the wireless charging module and the heat dissipation unit using a control unit.
10. The method as claimed in claim 9, further comprising monitoring temperature changes during charging operations using a thermal sensor integrated within the heat dissipation unit.