A modular wireless charging system

Abstract

The present invention relates to the field of wireless charging technology, and specifically to a modular wireless charging system. The wireless charging system includes an output power supply with a built-in wireless charging control circuit, at least one cable that supports the transmission of high-frequency alternating current or direct current required for wireless charging, and at least one transmitting coil group for wireless charging; one end of the cable is connected to the output power supply, and the other end is connected to the transmitting coil group; the beneficial effects of the present invention are: it is possible to integrate the wireless charging control circuit or chip into a power adapter or power supply, enriching the use scenarios of wireless charging, and also realizing the functions of traditional DC power adapters and power supplies, providing more basic technical support for the future research and development of wireless charging.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless charging, and in particular to a modular wireless charging system. Background Art

[0002] In the existing wireless charging technology, most wireless charging uses a short-distance connection between a PCB circuit board and a transmitting coil. However, during the wireless charging process, the PCB circuit board generates heat. Therefore, in the use scenario where the PCB circuit board and the transmitting coil are in a short distance, a heat dissipation device is required. At the same time, the size of the transmitting end is too large, and there is no way to reduce the size, which seriously limits the use scenarios of wireless charging.

[0003] At the same time, the inventor has already provided a product with separated plate and ring, which is widely circulated on the market. In terms of current products and technologies, the inventor provides a modular wireless charging system in this application, which can realize a wider range of application scenarios. Summary of the Invention

[0004] The present invention provides a modular wireless charging system that can provide a wider range of usage scenarios and provide more convenient use of wireless charging.

[0005] The specific technical solution of the present invention is as follows: a modular wireless charging system, the wireless charging system includes an output power supply with a built-in wireless charging control circuit,

[0006] At least one cable that supports the high-frequency AC or DC power required for wireless charging,

[0007] At least one transmitting coil assembly for wireless charging;

[0008] One end of the cable is connected to the output power supply, and the other end is connected to the transmitting coil group.

[0009] Furthermore, the cable includes at least one capacitor forming an LC series relationship with the transmitting coil group, and at least one signal acquisition module for feedback signal;

[0010] The feedback signal includes power regulation information.

[0011] Furthermore, the cable also includes a storage and communication module for storing characteristic information of the cable and the transmitting coil group, and the storage and communication module sends the feedback signal and characteristic information of the signal acquisition module to the wireless charging control circuit of the output power supply;

[0012] The characteristic information includes electrical characteristics.

[0013] Furthermore, the wireless charging control circuit includes a signal recognition module, a power calculation module, and a power control module. The signal recognition module communicates with the storage and communication module, and sends power adjustment information and feature information to the power calculation module. The power calculation module calculates the required output power and working mode, and then controls the high-frequency AC or DC power required for wireless charging output by the power control module.

[0014] Furthermore, the cable also includes a storage and communication module for storing characteristic information of the cable and the transmitting coil group, and the storage and communication module sends the feedback signal and characteristic information of the signal acquisition module to the wireless charging control circuit of the output power supply;

[0015] The characteristic information includes electrical characteristics and ID characteristics.

[0016] Furthermore, the wireless charging control circuit includes a signal recognition module, a power calculation module, and a power control module. The signal recognition module communicates with the storage and communication module, identifies and judges the ID characteristics, and sends the power adjustment information and characteristic information to the power calculation module. The power calculation module calculates the required output power and working mode, and then controls the high-frequency AC or DC power required for wireless charging output by the power control module.

[0017] Furthermore, the cable is electrically connected to the output power supply via a connector, and the connector provides electrical contacts for transmitting communication signals, high-frequency alternating current, and direct current respectively.

[0018] Furthermore, the connector includes a USB type-c interface, a USB micro interface or a lighting interface.

[0019] Furthermore, in the distribution of the Type-c hardware form interface, the original audio and video transmission pin contacts are replaced with pin contacts for wireless AC power transmission.

[0020] Furthermore, the cable includes at least one capacitor forming an LC series relationship with the transmitting coil group, and a storage and communication module having a function of storing characteristic information of the cable and the transmitting coil group;

[0021] The transmitting coil group is provided with a feedback signal receiving circuit and a second communication circuit;

[0022] The feedback signal receiving circuit is connected to the second communication circuit, and the second communication circuit is connected to the storage and communication module;

[0023] The storage and communication module sends the feedback signal and characteristic information of the signal acquisition module to the wireless charging control circuit of the output power supply;

[0024] The characteristic information includes electrical characteristics.

[0025] The beneficial effects of the present invention are: it can realize the integration of wireless charging control circuit or chip into the power adapter or power supply, enrich the use scenarios of wireless charging, realize more functions of the power adapter and power supply, and provide more basic technical support for the future research and development of wireless charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a system schematic diagram of a first embodiment of the present invention;

[0027] Figure 2 is a system schematic diagram of a second embodiment of the present invention;

[0028] Figure 3 FIG. 4 is a system diagram of a third embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to illustrate the present invention and are not intended to limit the present invention.

[0030] On the contrary, the present invention covers any substitution, modification, equivalent method and scheme made on the spirit and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below.

[0031] like Figure 1 FIG2 is a schematic diagram of a first embodiment of a modular wireless charging system provided by the present invention. The wireless charging system includes an output power supply 1 with a built-in wireless charging control circuit and at least one cable 2 that supports the transmission of high-frequency AC or DC power required for wireless charging.

[0032] At least one transmitting coil assembly 3 for wireless charging;

[0033] One end of the cable 2 is connected to the output power supply 1 , and the other end is connected to the transmitting coil group 3 .

[0034] The end of the cable 2 connected to the output power supply 1 has a wireless charging conversion circuit board 20, on which are provided at least one capacitor 21 forming an LC series relationship with the transmitting coil group 3, and at least one signal acquisition module 22 for feedback signal;

[0035] The feedback signal includes power regulation information.

[0036] In other embodiments, the wireless charging conversion circuit board 20 on the cable 2 further includes a storage and communication module 23 for storing characteristic information of the cable and the transmitting coil group. The storage and communication module 23 sends the feedback signal and characteristic information of the signal acquisition module 22 to the wireless charging control circuit 10 of the output power supply 1;

[0037] The characteristic information includes electrical characteristics.

[0038] The output power supply 1 includes a controllable output power supply circuit, which has a built-in DC circuit output module and an AC circuit output module in the prior art. The DC circuit output module and the AC circuit output module are both modules or circuits in the prior art and can be realized by simple integration in the prior art. Therefore, no specific limitation is made here. The built-in chip can be used to select the output of AC or DC.

[0039] One end of the wireless charging control circuit 10 is connected to the connector 4, and the other end is connected to the controllable output power circuit;

[0040] The cable 2 is electrically connected to the output power supply 1 via a connector 4, and the connector 4 provides electrical contacts for transmitting communication signals, high-frequency alternating current, and direct current respectively;

[0041] It can be understood that based on the fact that the existing USB micro interface, USB Type-C interface, or Lightning interface can transmit direct current, by changing other idle contacts on the interface or less frequently used contacts to contacts that transmit communication signals and high-frequency alternating current, the connector 4 proposed in the invention can be realized. The accompanying drawings show a USB Type-C interface.

[0042] The distribution and specifications of the USB type-c hardware interface are as follows. The second and fourth rows in the table below are different from the standard Type-C.

[0043] a) VCC / GND is direct current, and one or both of them will be connected to the eddy current damper with stable potential of the coil module through a high-frequency low-resistance circuit.

[0044] b) CC and DN / DP are the communication interfaces of Type-C. CC is mainly used for handshake, information exchange and configuration between the two USB parties, while DN / DP is used for high-speed digital signal communication.

[0045] In addition to transmitting standard USB type-C specifications (if a standard USB device is connected to the power supply), i.CC is also used to transmit cable characteristics of the "cable and coil combination" and wireless charging feedback signals when connected to the first communication circuit.

[0046] c) AC1 / 2 is the wireless AC transmission interface for power supply.

[0047] d) SN is the signal input interface of the configuration circuit, but it may also be multiplexed as a special signal output interface.

[0048] The connector 4 includes a male connector 41 and a female connector 42 , wherein the male connector 41 is one end of the cable, and the female connector 42 is for the output power supply 1 . The positional relationship between the male connector 41 and the female connector 42 is not specifically limited.

[0049] An AC line and a DC line are provided on the wireless charging conversion circuit board 20, wherein the capacitor 21 is loaded on one of the power supply lines of the AC line, and the signal acquisition module 22 collects data from the capacitor 21 at the end opposite to the connector 4. The signal acquisition module 22 is connected to the storage and communication module 23 in sequence and is connected to the male connector 41 of the connector 4;

[0050] The wireless charging control circuit 10 includes a signal recognition module, a power calculation module, and a power control module. The signal recognition module communicates with the storage and communication module and sends power adjustment information and feature information to the power calculation module. The power calculation module calculates the required output power and operating mode, and then controls the power supply to output the high-frequency AC or DC power required for wireless charging through a controllable output power circuit (power control module).

[0051] In other embodiments, the cable 2 further includes a storage and communication module 23 for storing characteristic information of the cable and the transmitting coil group, and the storage and communication module 23 sends the feedback signal and characteristic information of the signal acquisition module 22 to the wireless charging control circuit 10 of the output power supply;

[0052] The characteristic information includes electrical characteristics and ID characteristics.

[0053] The wireless charging control circuit 10 includes a signal recognition module, a power calculation module, and a power control module. The signal recognition module communicates with the storage and communication module and sends power adjustment information, feature information, and ID features to the power calculation module. The power calculation module calculates the required output power and operating mode, and then controls the power supply to output the high-frequency AC or DC power required for wireless charging through the controllable output power circuit.

[0054] The transmitting coil assembly 3 includes a spiral coil and a stable potential eddy current damper. The stable potential eddy current damper is closely attached to or built into the spiral coil. The figure shows that the spiral coil is above the stable potential eddy current damper.

[0055] like Figure 2FIG. 1 is a system diagram of a second embodiment of a modular wireless charging system provided by the invention. This embodiment is identical to the above embodiment in content and will not be described in detail herein. The only difference is that this embodiment does not have a signal acquisition module 22. Instead, a feedback signal receiving circuit 31 and a second communication circuit 32 are provided on the transmitting coil assembly 3. The feedback signal receiving circuit 31 feeds back the relevant information and features of the above embodiment to the storage and communication module 23.

[0056] like Figure 3 FIG. 1 is a system diagram of a third embodiment of a modular wireless charging system provided by the present invention. This embodiment is similar to the first embodiment and will not be described in detail herein. The only difference is that this embodiment provides a topological structure of a wireless charging system. The cable 2 includes a first cable 24 and at least one second cable 25. One end of the first cable 24 is a male connector 41 of a connector 4. The other end of the first cable 24 is connected to one end of the second cable 25 via a splitter 26. The other end of each second cable 25 is connected to a transmitting coil assembly 3.

[0057] The structures of the second cable 25 and the transmitting coil assembly 3 are the same as those of the first embodiment;

[0058] Another communication circuit 40 is provided at the location where the first cable 24 has the male connector 41 , for transmitting relevant information and data returned by the splitter 26 .

Claims

1. A modular wireless charging system, characterized by: The wireless charging system includes an output power supply with a built-in wireless charging control circuit, At least one cable that supports the high-frequency AC or DC power required for wireless charging, At least one transmitting coil assembly for wireless charging; One end of the cable is connected to the output power supply, and the other end is connected to the transmitting coil group; One end of the cable connected to the output power supply has a wireless charging conversion circuit board connected to the connector, and the wireless charging conversion circuit board is provided with at least one capacitor forming an LC series relationship with the transmitting coil group, and at least one signal acquisition module for feedback signal; The feedback signal includes power adjustment information; The cable is electrically connected to the output power supply through a connector, and the connector provides electrical contacts for transmitting communication signals, high-frequency alternating current, and direct current respectively.

2. A modular wireless charging system according to claim 1, characterized in that: The cable also includes a storage and communication module that stores characteristic information of the cable and the transmitting coil group, and the storage and communication module sends the feedback signal and characteristic information of the signal acquisition module to the wireless charging control circuit of the output power supply; The characteristic information includes electrical characteristics.

3. A modular wireless charging system according to claim 2, characterized in that: The wireless charging control circuit includes a signal recognition module, a power calculation module, and a power control module. The signal recognition module communicates with the storage and communication module, sends power adjustment information and feature information to the power calculation module, and the power calculation module calculates the required output power and operating mode, and then controls the power supply to output the high-frequency AC or DC power required for wireless charging through the power control module.

4. The modular wireless charging system according to claim 1, wherein: The cable also includes a storage and communication module that stores characteristic information of the cable and the transmitting coil group, and the storage and communication module sends the feedback signal and characteristic information of the signal acquisition module to the wireless charging control circuit of the output power supply; The characteristic information includes electrical characteristics and ID characteristics.

5. A modular wireless charging system according to claim 4, characterized in that: The wireless charging control circuit includes a signal recognition module, a power calculation module, and a power control module. The signal recognition module communicates with the storage and communication module, identifies and determines the ID characteristics, and sends power adjustment information and characteristic information to the power calculation module. The power calculation module calculates the required output power and working mode, and then controls the power supply to output the high-frequency AC or DC power required for wireless charging through the power control module.

6. The modular wireless charging system according to claim 1, characterized in that: The connector includes a USB type-c interface, a USB micro interface or a lighting interface.

7. A modular wireless charging system according to claim 6, characterized in that: In the distribution of the Type-c hardware form interface, the original audio and video transmission pin contacts are replaced with pin contacts for wireless AC power transmission.

8. The modular wireless charging system according to claim 1, wherein: The cable includes at least one capacitor forming an LC series relationship with the transmitting coil group, and a storage and communication module capable of storing characteristic information of the cable and the transmitting coil group; The transmitting coil group is provided with a feedback signal receiving circuit and a second communication circuit; The feedback signal receiving circuit is connected to the second communication circuit, and the second communication circuit is connected to the storage and communication module; The storage and communication module sends the feedback signal and characteristic information of the signal acquisition module to the wireless charging control circuit of the output power supply; The characteristic information includes electrical characteristics.

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