CN215343945U

CN215343945U - Wireless charging device and terminal

Info

Publication number: CN215343945U
Application number: CN202120378556.XU
Authority: CN
Inventors: 吴凯棋
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-02-18
Filing date: 2021-02-18
Publication date: 2021-12-28
Anticipated expiration: 2031-02-18

Abstract

The present disclosure relates to a wireless charging device; the wireless charging device is applied to a terminal and comprises: at least two charging circuits, and a switch assembly; wherein, the charging circuit includes: the coil and the capacitor are connected with the coil; the capacitor is used for being connected with a load; the switch assembly is connected between the capacitors of at least two charging circuits; when the switch assembly is in different conducting states, at least two charging circuits are in different charging modes; and under different charging modes, different capacitors are in charging connection and conduction with the load. The embodiment of the disclosure can realize adjustment of the coupling structure, so that the wireless charging device can be compatible with different devices for charging.

Description

Wireless charging device and terminal

Technical Field

The present disclosure relates to wireless charging technologies, and in particular, to a wireless charging device.

Background

With the development of wireless charging technology, more and more terminals, including many wearable devices and intelligent terminals, start to use wireless charging technology for charging. At present, a receiving end of wireless charging is structured in such a way that a coil converts alternating current into direct current through a rectifier bridge, and a coupling structure cannot be adjusted in the conventional wireless charging; therefore, the wireless charging device cannot be compatible with different devices and cannot provide charging under different powers.

Disclosure of Invention

The present disclosure provides a wireless charging device.

According to a first aspect of embodiments of the present disclosure, there is provided a wireless charging apparatus, including: at least two charging circuits and a switch assembly; wherein the content of the first and second substances,

the charging circuit includes: the coil and the capacitor are connected with the coil; the capacitor is used for being connected with a load;

the switch assembly is connected between the capacitors of at least two charging circuits; when the switch assembly is in different conducting states, at least two charging circuits are in different charging modes; and under different charging modes, different capacitors are in charging connection and conduction with the load.

In the foregoing solution, the charging mode at least includes one of the following:

a first charging mode in which at least two of the charging circuits are connected in series, wherein when at least two of the charging circuits are connected in series, the capacitors of at least two of the charging circuits are connected in series;

and in the second charging mode, at least two charging circuits are connected in parallel, wherein when at least two charging circuits are connected in series, the capacitors of at least two charging circuits are connected in parallel.

In the above solution, the switch assembly includes a first type switch assembly; wherein the first type of switch assembly comprises: a first switching device, a second switching device, and a third switching device;

in the first charging mode, the first switching device is closed, and the second switching device is open from the third switching device;

in the second charging mode, the first switching device is open, and the second switching device and the third switching device are closed.

In the above scheme, the first switching device is connected between the positive electrode of one of the capacitors of two adjacent charging circuits and the negative electrode of the other capacitor;

the second switching device is connected between the positive electrodes of the capacitors of two adjacent charging circuits or between the positive electrodes of the capacitors of any two charging circuits;

the third switching device is connected between the negative electrodes of the capacitors of two adjacent charging circuits or between the negative electrodes of the capacitors of any two charging circuits.

In the above scheme, in the first charging mode, the capacitors of at least two of the charging circuits are connected in series to output a first voltage and/or a first current;

in the second charging mode, the capacitors of at least two charging circuits output a second voltage and/or a second current in parallel;

wherein the first voltage is greater than the second voltage, and the first current is less than the second current.

In the foregoing solution, the charging mode includes: in the third charging mode, the capacitors of at least two charging circuits are respectively connected and conducted with the load.

In the above aspect, the switch module includes: at least two second type switch assemblies; a second switch assembly of said second type for connecting said capacitor of said charging circuit to said load;

in the third charging mode, the first-type switch assembly is turned off, and one of the second-type switch assemblies in at least two of the second-type switch assemblies is turned on.

In the foregoing solution, the second type of switch assembly includes:

a fourth switching device for connecting the positive electrode of the capacitor of the charging circuit with a load;

and the fifth switching device is used for connecting the negative electrode of the capacitor of the charging circuit with a load.

In the above scheme, the method further comprises:

and the control circuit is connected with the switch assembly and is used for controlling the switch assembly to be in different conduction states so as to enable different capacitors to be conducted with the charging connection of the load in different charging modes.

According to a second aspect of the embodiments of the present disclosure, there is provided a terminal including the wireless charging apparatus according to any of the embodiments of the present disclosure.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

in an embodiment of the present disclosure, there is provided a wireless charging device, including: at least two charging circuits and a switch assembly; wherein, the charging circuit includes: the coil and the capacitor are connected with the coil; the capacitor is used for being connected with a load; the switch assembly is connected between the capacitors of at least two charging circuits; when the switch assembly is in different conducting states, at least two charging circuits are in different charging modes; and under different charging modes, different capacitors are connected with the load in different charging modes in a charging mode.

Therefore, when the switch assembly is in different conduction states, the wireless charging device can be in different charging modes, namely, different capacitors are connected with the load in a conduction mode, and the load is charged through the capacitors of different charging circuits. Therefore, the embodiment of the present disclosure can enable the wireless charging device to be compatible with different devices for charging by adjusting the coupling structure of the wireless charging device, and can provide different charging powers, charging voltages and/or charging currents for wireless charging.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 2 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 3 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 4 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 5 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 6 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 7 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 8 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 9 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 10 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 11 is a block diagram illustrating a wireless charging device in accordance with an example embodiment.

Fig. 12 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 13 is a block diagram illustrating a wireless charging device according to an example embodiment.

Fig. 14 is a block diagram illustrating a terminal including a wireless charging device according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

In one embodiment, a wireless charging system includes a receiving end and a transmitting end for wireless charging. In the wireless charging system, a power supply conversion module transmits wireless charging energy to a receiving module; the receiving end transmits the load modulation information to the transmitting end; the transmitting end transmits information to the receiving end through frequency modulation. The receiving end here may be a terminal in the following embodiments.

Fig. 1 is a block diagram illustrating a wireless charging device according to an exemplary embodiment, where, as shown in fig. 1, the wireless charging device 10 includes: at least two charging circuits 11 and a switch assembly 12; wherein the content of the first and second substances,

the charging circuit 11 includes: a coil 111 and a capacitor 112 connected to the coil 111; the capacitor 112 is used for connecting with the load 20;

the switch assembly 12 is connected between the capacitors 112 of at least two of the charging circuits 11; when the switch assembly 12 is in different conducting states, at least two of the charging circuits are in different charging modes; in different charging modes, different capacitors 112 are in charging connection with the load.

The wireless charging device 10 can be applied to a terminal. For example, a terminal provided in an embodiment of the present disclosure includes: the wireless charging device of any embodiment of this disclosure.

The terminal can be an electronic device such as a mobile phone, a notebook computer or a computer. In one embodiment, the terminal may be any electronic device capable of receiving video signals. In another embodiment, the terminal may be a stationary device or a mobile device capable of receiving wireless charging.

In the disclosed embodiment, the wireless charging device 10 may include two charging circuits or more than two charging circuits. For example, as shown in fig. 1, the wireless charging device 10 includes two charging circuits; in other examples, the number of wireless charging devices may be three or more.

Here the coil 111 can be used to generate electromagnetic induction for transmitting or wireless charging signals. When the coil 111 receives a wireless charging signal, the capacitor 112 connected to the coil 111 may be charged. In one embodiment, the number of coils 111 in one charging circuit may be one. In another embodiment, the number of coils 111 in one charging circuit may be plural; the plurality of coils are connected in series or in parallel.

The capacitor 112 is connected here to the load 20 for charging said load. In some embodiments, the capacitor 112 charges the load, which may be considered as the coil 111 of the charging circuit 11 where the capacitor is located. Here the coil 111 outputs an electrical signal to a capacitor 112, which capacitor 112 charges the load. The load 20 may be a battery of a terminal where the wireless charging device is located, or may be another device. The device may be used as a receiving end for wireless charging, etc., and the type of load is not limited herein.

In some embodiments, the conductive state of the switching assembly 12 includes, but is not limited to, one of: the method comprises the following steps of closing part of the switch assemblies, opening all the switch assemblies and closing all the switch assemblies.

In some embodiments, the switch assembly 12 may be in multiple or multiple sets. For example, if there are N charging circuits in the wireless charging device, the number of the switch elements may be greater than or equal to N or N groups of switch elements; wherein N is an integer greater than 1.

In some embodiments, the switch assembly 12 includes: a first type of switch assembly and/or a second type of switch assembly; the first switch component is connected between the capacitors of any two charging circuits; and the second type of switch component is used for being connected between the capacitor of the charging circuit and the load.

In the embodiments of the present disclosure, the different charging modes may be: the capacitors of the different charging circuits are in conductive connection with the charging of the load. For example, in the wireless charging device, the capacitors of at least two charging circuits are connected in series to a load, and the capacitors of the at least two charging circuits are connected in series to output to the load for charging; for another example, capacitors of at least two charging circuits in the wireless charging device are connected in parallel to a load, and the capacitors of the at least two charging circuits are connected in parallel to charge the load; for another example, in the wireless charging device, the capacitors of only two charging circuits are respectively connected to the load through the switch assemblies, wherein the charging circuits, which are conducted by the switch assemblies connected with the capacitors and the load, charge the load; and so on.

As shown in fig. 2, in some implementations, the charging circuit 11 further includes: a rectifying circuit 113; the rectifying circuit 113 is connected between the coil 111 and the capacitor 112, and is configured to convert an ac signal received by the coil 111 into a dc signal.

The rectifying circuit can be a rectifying bridge; the rectifier bridge may include: 4 diodes. Of course, in other embodiments, the rectifier bridge may also include 4 metal oxide semiconductor field effect transistors (MOS), or 4 Insulated Gate Bipolar Transistors (IGBT), or 2 diodes and 2 MOS transistors, etc.; no limitation is imposed on the rectifier bridge or the rectifier circuit.

In the embodiment of the present disclosure, when the switch component is in different conduction states, the wireless charging device is in different charging modes, that is, the conduction connection between different capacitors and loads is realized, and then the capacitors of different charging circuits are used for charging the loads. Therefore, the embodiment of the present disclosure can enable the wireless charging device to be compatible with different devices for charging by adjusting the coupling structure of the wireless charging device, and can provide different charging powers, charging voltages and/or charging currents for wireless charging.

In some embodiments, the charging mode includes, but is not limited to, at least one of: a first charging mode, a second charging mode and a third charging mode. The first charging mode here may be a series charging mode; the second charging mode here may be a parallel charging mode; the third charging mode here may be an independent charging mode.

In some embodiments, the charging mode includes at least one of:

and in the second charging mode, at least two charging circuits are connected in parallel, wherein when at least two charging circuits are connected in parallel, the capacitors of at least two charging circuits are connected in parallel.

In some embodiments, the charging mode includes at least one of:

a first charging mode in which at least two of the capacitors 112 of the charging circuits 11 are connected in series;

in the second charging mode, at least two capacitors 112 of the charging circuit 11 are connected in parallel.

As shown in fig. 1 and 3, in some embodiments, the switch assembly 12, includes a first type of switch assembly 121; wherein the first type switch component 121 includes: a first switching device 1211, a second switching device 1212, and a third switching device 1213;

in the first charging mode, the first switching device 1211 is closed, and the second switching device 1212 is opened from the third switching device 1213;

in the second charging mode, the first switching device 1211, the second switching device 1212, and the third switching device 1213 are closed.

Here, the first switch device is closed, the second switch device is open, and the first switch component is considered to be in the first conducting state. Here, the first switching device is open, the second switching device and the third switching device are closed, and the first type switching component can be considered to be in the second conducting state.

In some embodiments, the first type of switch assembly can be any single pole, single throw switch. Of course, in other embodiments, the first type of switch component may be other switches with opening and closing functions.

In some embodiments, a set of first type switching components includes a first switching device, a second switching device, and a third switching device; if the number of the charging circuits is N, the number of the first type of switch components is N-1; wherein N is an integer greater than 1. Of course, in other embodiments, the number of the first type switch components may be greater than or equal to the number of the charging circuits.

Referring to fig. 3 again, in some embodiments, the first switching device 1211 is connected between the positive electrode of one of the capacitors 112 of two adjacent charging circuits 11 and the negative electrode of the other capacitor 112;

the second switching device 1212 is connected between the positive electrode and the positive electrode of the capacitor 112 of two adjacent charging circuits 11;

the third switching device 1213 is connected between the negative electrodes of the capacitors 112 of two adjacent charging circuits 11.

In the disclosed embodiment, the positive pole may be represented by a "+" symbol and the negative pole may be represented by a "-" symbol.

Illustratively, as shown in fig. 4, the wireless charging device includes 2 charging circuits; the 2 charging circuits are respectively: a first charging circuit 11 and a second charging circuit 11. Wherein the first switching device K11 is connected between the cathode (-) of the capacitor C1 of the first charging circuit and the anode (+) of the capacitor C2 of the second charging circuit; the second switching device K21 is connected between the anode of the capacitor C1 of the first charging circuit and the anode of the capacitor C2 of the second charging circuit; and the third switching device K31 is connected between the cathode of the capacitor C1 of the first charging circuit and the cathode of the capacitor C2 of the second charging circuit. Thus, when the K11 is closed and the K21 and the K31 are open, the C1 of the first charging circuit and the C2 of the second charging circuit are output in series to charge the load; for example, as shown in fig. 5, C1 of the first charging circuit and C2 of the second charging circuit output the voltage VOUT1 in series. Or when the K11 is turned off and the K21 and the K31 are turned on, the C1 of the first charging circuit and the C2 of the second charging circuit are output in parallel to charge the load; for example, as shown in fig. 6, C1 of the first charging circuit and C2 of the second charging circuit output the voltage VOUT2 in parallel. In this way, in this example, the first type of switch component can be made to be in different conducting states, so as to achieve different power output to supply different loads.

The rectifier bridge herein comprises: diode D1, diode D2, diode D3, and diode D4. Here, the coil 111 of the first charging circuit is coil L1, and the coil 111 of the second charging circuit is coil L2.

Illustratively, as shown in fig. 7, the wireless charging device includes 3 charging circuits; each of the 3 charging circuits comprises a coil, a rectifying circuit and a capacitor; wherein, 3 charging circuit do respectively: the charging circuit comprises a first charging circuit, a second charging circuit and a third charging circuit. Wherein the first switching device K11 is connected between the cathode (-) of the capacitor C1 of the first charging circuit and the anode (+) of the capacitor C2 of the second charging circuit; the first switching device K12 is connected between the cathode of the capacitor C2 of the second charging circuit and the anode of the capacitor C3 of the third charging circuit. The second switching device K21 is connected between the anode of the capacitor C1 of the first charging circuit and the anode of the capacitor C2 of the second charging circuit; the second switching device K22 is connected between the anode of the capacitor C2 of the second charging circuit and the anode of the capacitor C3 of the third charging circuit. The third switching device K31 is connected between the cathode of the capacitor C1 of the first charging circuit and the cathode of the capacitor C2 of the second charging circuit; the third switching device K32 is connected between the cathode of the capacitor C2 of the second charging circuit and the cathode of the capacitor C3 of the third charging circuit. Thus, when K11 and K12 are closed and K21, K22, K31 and K32 are open, the capacitor C1 of the first charging circuit, the capacitor C2 of the second charging circuit and the capacitor C3 of the third charging circuit are serially output to charge the load. Or when the K11 and the K12 are disconnected and the K21, the K22, the K31 and the K32 are closed, the capacitor C1 of the first charging circuit, the capacitor C2 of the second charging circuit and the capacitor C3 of the third charging circuit are connected in parallel to output so as to charge the load. In this way, in this example, the first type of switch component can be in different conducting states, so as to achieve the purpose of outputting different powers to supply power to different loads.

It will be appreciated that as the number of charging circuits increases, a greater variety of wireless charging device coupling configurations may be implemented, thereby enabling the powering of loads in more different power ranges. For example, when the number of the charging circuits is 5, 2 or 3 or 4 or 5 capacitors of the 5 charging circuits may be connected in parallel or in series to output, so as to supply power to the load.

In other embodiments, the first switching device 1211 is connected between the positive electrode of one of the capacitors 112 of two adjacent charging circuits 11 and the negative electrode of the other capacitor 112;

the second switching device 1212 is connected between the positive electrode and the positive electrode of the capacitor 112 of any two of the charging circuits 11;

the third switching device 1213 is connected between the negative electrode and the negative electrode of the capacitor 112 of any two of the charging circuits 11.

Illustratively, as shown in fig. 8, the wireless charging device includes 3 charging circuits; each of the 3 charging circuits comprises a coil, a rectifying circuit and a capacitor; wherein, 3 charging circuit do respectively: the charging circuit comprises a first charging circuit, a second charging circuit and a third charging circuit. Wherein the first switching device K11 is connected between the cathode (-) of the capacitor C1 of the first charging circuit and the anode (+) of the capacitor C2 of the second charging circuit; the first switching device K12 is connected between the cathode of the capacitor C2 of the second charging circuit and the anode of the capacitor C3 of the third charging circuit. The second switching device K21 is connected between the anode of the capacitor C1 of the first charging circuit and the anode of the capacitor C2 of the second charging circuit; the second switching device K22 is connected between the anode of the capacitor C1 of the first charging circuit and the anode of the capacitor C3 of the third charging circuit. The third switching device K31 is connected between the cathode of the capacitor C1 of the first charging circuit and the cathode of the capacitor C2 of the second charging circuit; the third switching device K32 is connected between the cathode of the capacitor C2 of the first charging circuit and the cathode of the capacitor C3 of the third charging circuit. Thus, when the K11 and the K12 are closed and the K21, the K22, the K31 and the K32 are opened, the capacitor C1 of the first charging circuit, the capacitor C2 of the second charging circuit and the capacitor C3 of the third charging circuit are output in series to charge the load; or when the K11 and the K12 are disconnected and the K21, the K22, the K31 and the K32 are closed, the capacitor C1 of the first charging circuit, the capacitor C2 of the second charging circuit and the capacitor C3 of the third charging circuit are connected in parallel to output so as to charge the load. In this way, in this example, the first type of switch component can be in different conducting states, so as to achieve the purpose of outputting different powers to supply power to different loads.

In the above example, the second switching device connects the positive electrode and the negative electrode of the capacitors of any two of the charging circuits: the anode of the capacitor C2 of the second charging circuit and the anode of the capacitor C3 of the third charging circuit are respectively connected with the anode of the capacitor C1 of the first charging circuit through a second switching device; and the negative pole of the capacitor of any two charging circuits connected by the third switching device are: the cathode of the capacitor C2 of the second charging circuit and the cathode of the capacitor C3 of the third charging circuit are connected to the cathode of the capacitor C1 of the first charging circuit through the third switching device, respectively. Of course, in other embodiments, the second switching device connects the positive electrodes and the negative electrodes of the capacitors of any two of the charging circuits, and/or the third switching device connects the negative electrodes and the negative electrodes of the capacitors of any two of the charging circuits, which may be in other connection manners; the positive electrode and the negative electrode of the capacitor of the same charging circuit are respectively and correspondingly connected with the positive electrode and the negative electrode of the capacitor of the other charging circuit; for example, if the positive electrode of the capacitor of the ith charging circuit is connected with the positive electrode of the capacitor of the jth charging circuit through the second switching device, the negative electrode of the ith charging circuit is also connected with the negative electrode of the capacitor of the jth charging circuit through the third switching device; wherein i and j are integers greater than 0, and i is different from j. Therefore, in the embodiment of the present disclosure, various connection manners of the first switch device, the second switch device, and the third switch device with the capacitor of the charging circuit are provided, so that more deformations of the coupling structure of the wireless charging device can be provided, the architecture of the wireless charging device is more flexible, and the wireless charging device is suitable for wireless charging in more scenes requiring different power.

In the embodiment of the disclosure, the capacitors of different charging circuits can output voltages to supply power to the load in a series or parallel manner by enabling the first type of switch component to be in different conducting states, so that the wireless charging device is suitable for wireless charging of different devices and/or different powers.

In some embodiments, in the first charging mode, the capacitors 112 of at least two of the charging circuits 11 output a first voltage and/or a first current in series;

in the second charging mode, the capacitors 112 of at least two charging circuits 11 output a second voltage and/or a second current in parallel;

For example, as shown in fig. 4, in a first application scenario, when the first switch is closed at K11 and opened at K21 and K31, the C1 of the first charging circuit is output in series with the C2 of the second charging circuit, and the first device can be charged. In the second application scenario, when the K11 is turned off and the K21 and the K31 are turned on, the C1 of the first charging circuit and the C2 of the second charging circuit are output in parallel, and the second device can be charged. The first device is a high-voltage device, and the second device is a low-voltage device; the high-voltage device and the low-voltage device are relatively speaking, and the voltage for charging the high-voltage device is larger than the voltage for charging the low-voltage device.

In the above example, if the wireless charging device works in a first application scenario and needs to switch to a second application scenario, the wireless charging device may first send the first information to the sending end in a wireless communication manner, and then switch to the second application scenario; the first information is used for indicating that the discharging power of the sending terminal is increased from a first power to a second power. Or, if the wireless charging device works in the second application scene and needs to switch to work in the first application scene, the wireless charging device may first send the second information to the sending end in a wireless communication manner and then switch to work in the first application scene; the second information is used for indicating that the power discharged by the sending terminal is reduced from third power to fourth power. The transmitting end is a device capable of charging the wireless charging apparatus.

In the embodiment of the disclosure, if the capacitors of at least two charging circuits are serially connected to output to charge the load, compared with the case that the load is charged through the capacitor of one charging circuit, the voltage can be increased, and the method is suitable for equipment with higher voltage charging requirements; and compared with the charging of the load through the capacitor of one charging circuit, the charging current is reduced by about two halves, and the impedance is basically consistent, so that the charging loss can be reduced, and the charging efficiency is improved.

Or, if the capacitors of at least two charging circuits are connected in parallel to output to charge the load, compared with the case of charging the load through the capacitor of one charging circuit, the current can be increased, so that the device is used for charging with higher current; and compared with the method for charging the load through the capacitor of one charging circuit, the impedance is reduced by about one half, and the current is basically consistent, so that the charging loss can be reduced, and the charging efficiency is improved.

In some embodiments, the charging mode comprises: in the third charging mode, the capacitors 112 of at least two charging circuits 11 are respectively connected to the load 20.

As shown in fig. 9, in some embodiments, the switch assembly includes: at least two second-type switch assemblies 122; a switch element 122 of said second type for connecting said capacitor 112 of said charging circuit 11 to said load 20;

in the third charging mode, the first-type switching element 121 is turned off, and one of the second-type switching elements 122 of at least two second-type switching elements 122 is turned on.

In some embodiments, the second type of switch assembly can be any single pole single throw switch. Of course, in other embodiments, the first type of switch component may be other switches with opening and closing functions.

In one embodiment, if the second type of switch device is a single-pole single-throw switch, the number of groups of the second type of switch device may be the same as the number of groups of the charging circuit. For example, if the wireless charging device includes N charging circuits, the second type of switch element is N groups; and the group of second-type switch assemblies comprises two switch devices, wherein one switch device is connected between the anode of the capacitor of one charging circuit and the load, and the other switch device is connected between the cathode of the capacitor of one charging circuit and the load.

Referring again to fig. 9, in some embodiments, the second type of switch assembly 122 includes:

a fourth switching device 1221 for connecting the positive electrode of the capacitor 112 of the charging circuit 11 and the load;

a fifth switching device 1222 for connecting the negative electrode of the capacitor 112 of the charging circuit 11 with the load.

Illustratively, as shown in fig. 10, the wireless charging device includes 2 charging circuits; each of the 2 charging circuits comprises a coil, a rectifying circuit and a capacitor; the 2 charging circuits are respectively: the first charging circuit and the second charging circuit. Wherein the first switching device K11 is connected between the cathode (-) of the capacitor C1 of the first charging circuit and the anode (+) of the capacitor C2 of the second charging circuit; the second switching device K21 is connected between the anode of the capacitor C1 of the first charging circuit and the anode of the capacitor C2 of the second charging circuit; and the third switching device K31 is connected between the cathode of the capacitor C1 of the first charging circuit and the cathode of the capacitor C2 of the second charging circuit. The fourth switching device K41 is connected between the positive electrode of the capacitor C1 of the first charging circuit and the load, and the fourth switching device K42 is connected between the positive electrode of the capacitor C2 of the second charging circuit and the load; the fifth switching device K51 is connected between the negative terminal of the capacitor C1 of the first charging circuit and the load, and the fifth switching device K52 is connected between the negative terminal of the capacitor C2 of the second charging circuit and the load. In this example, the first switching device K11, the second switching device K21, and the third switching device K31 are all open. If the fourth switching device K41 and the fifth switching device K51 are closed and the fourth switching device K42 and the fifth switching device K52 are open, the capacitor C1 of the first charging circuit alone charges the load; or, if the fourth switch is turned off if the fourth switching device K41 and the fifth switching device K51 are opened, and the fourth switching device K42 and the fifth switching device K52 are closed, the capacitor C2 of the second charging circuit alone charges the load. In this way, in this example, the first charging circuit or the second charging circuit can be implemented to supply power to the load separately, so that charging of different devices can be compatible, and wireless charging with different powers, different voltages and/or different currents can be provided for different devices or the same device.

In the above example, when the fourth switching devices K41 and K42, and the fifth switching devices K51 and K52 are all turned on, the capacitor C1 of the first charging circuit and the capacitor C2 of the second charging circuit can be controlled to supply power to the load together according to whether the first switching device K11, the second switching device K21, and the third switching device K31 are turned on or not. For example, if K41, K42, K51, K51, and K11 are on, and K21 and K31 are off, then C1 and C2 are connected in series to power the load; for another example, if K41, K42, K51, K51, K21, and K31 are on and K11 is off, then C1 and C2 are connected in parallel to supply power to the load.

For example, in one embodiment, if the switch assembly comprises: the first type of switch assembly and the second type of switch assembly; the first class of components includes: the first, second and third switching devices;

if the second type of switch component is turned on, the first switch device is turned on, the second switch device is turned on, and the third switch device and the fourth switch device are turned off, the capacitors of at least two charging circuits are connected in series to charge the load;

if the second type of switch component is switched on, the first switch device is switched on, the second switch device and the third switch device are switched on, and the first switch device is switched off, the capacitors of at least two charging circuits are connected in series to charge the load;

and if the first switch assembly is closed and at least one group of the second switch assemblies is conducted, the capacitor of at least one charging circuit connected with at least one group of the second switch assemblies charges the load.

In some embodiments, in different time periods, if only one set of the second type switching elements is turned on and the other second type switching elements are turned off, only one capacitor of the charging circuit supplies power to the load during the time periods.

For example, if the wireless charging device includes: the charging circuit comprises a first charging circuit, a second charging circuit and a third charging circuit; the second type of switch assembly includes three groups: the second switch assembly connected with the capacitor and the load of the first charging circuit is a first group of second switch assemblies, the second switch assembly connected with the capacitor and the load of the second charging circuit is a second group of second switch assemblies, and the second switch assembly connected with the capacitor and the load of the third charging circuit is a third group of second switch assemblies; if the first group of second-class switch components is conducted, the second group of second-class switch components and the third group of second-class switch components are disconnected in a first time period, the capacitor of the first charging circuit charges the load in the first time period; if the second group of second-type switch components is conducted, the first group of second-type switch components and the third group of second-type switch components are disconnected in a second time period, the capacitor of the second charging circuit charges the load in the second time period; and if the third group of second-type switch components is conducted and the first group of second-type switch components and the second group of second-type switch components are disconnected in a third time period, the capacitor of the third charging circuit charges the load in the third time period. Thus, in the embodiment of the present disclosure, it is possible to charge the load separately through one different charging circuit in different time periods; in this way, different periods of time may be achieved to provide different power, different voltages, and/or different currents to charge different devices or the same device.

Of course, in other embodiments, the capacitors of the first charging circuit, the second charging circuit and the third charging circuit may also be used to alternately supply power to the load. For example, the first time period, the second time period, and the third time period are 10 minutes, respectively, and the first time period, the second time period, and the third time period occur alternately, so that the capacitors of the first charging circuit, the second charging circuit, and the third charging circuit alternately supply power to the load.

Of course, in other embodiments, the load may be powered by a plurality of different charging circuits during different time periods; in this way, different periods of time may be achieved to provide different power, different voltages, and/or different currents to charge different devices or the same device.

In other embodiments, the second type of switch assembly may be any one of a double-pole single-throw switch or a multi-pole single-throw switch. The multi-pole single-throw switch herein may be an analog switch; the input terminal of the multi-pole single-throw switch has a plurality of terminals, and the output terminal of the multi-pole single-throw switch has one terminal. For example, if the second type of switch component is a double-pole single-throw switch, the number of the second type of switch component may be 2, and the wireless charging device may include 2 charging circuits; for another example, if the second type of switch component is a four-pole single-throw switch, the number of the second type of components may also be 2, and the wireless charging device may include 4 charging circuits. In this example, the second type of switch component may be connected to the positive electrode of the capacitor of the different charging circuit based on different input terminals, and the output terminal is connected to the load; and the negative pole and the output end of the capacitor of the different charging circuits can be connected based on different inputs respectively based on another second-type switch component.

Illustratively, as shown in fig. 11, the wireless charging device includes 2 charging circuits; each of the 2 charging circuits comprises a coil, a rectifying circuit and a capacitor; the 2 charging circuits are respectively: the first charging circuit and the second charging circuit. Wherein the first switching device K11 is connected between the cathode (-) of the capacitor C1 of the first charging circuit and the anode (+) of the capacitor C2 of the second charging circuit; the second switching device K21 is connected between the anode of the capacitor C1 of the first charging circuit and the anode of the capacitor C2 of the second charging circuit; and the third switching device K31 is connected between the cathode of the capacitor C1 of the first charging circuit and the cathode of the capacitor C2 of the second charging circuit. The second type of switch assembly comprises: a first double pole single throw switch K61 and a second double pole single throw K62 switch. The first end of the first double-pole single-throw switch K61 is connected with the anode of the C1 of the first charging circuit, the second end of the first double-pole single-throw switch K61 is connected with the anode of the C2 of the second charging circuit, and the third end of the first double-pole single-throw switch K61 is connected with the first end of the load; the first end of the second double-pole single-throw switch K62 is connected with the negative electrode of the C1 of the first charging circuit, the second end of the second double-pole single-throw switch K62 is connected with the negative electrode of the C2 of the second charging circuit, and the third end of the second double-pole single-throw switch K62 is connected with the second end of the load. In this example, the first switching device K11, the second switching device K21, and the third switching device K31 are all open. If the first terminal of the first double-pole single-throw switch K61 is conducted with the third terminal and the first terminal of the second double-pole single-throw switch K62 is conducted with the third terminal, the capacitor C1 of the first charging circuit charges the load; if the second terminal of the second double-pole single-throw switch K62 is conducted to the third terminal and the second terminal of the second double-pole single-throw switch K62 is conducted to the third terminal, the capacitor C2 of the second charging circuit charges the load. In this way, in this example, the first charging circuit or the second charging circuit can be implemented to supply power to the load separately, so that charging of different devices can be compatible, and wireless charging of different power, different voltage, and/or different current can be provided for different devices or the same device.

In the above embodiment, the capacitor of the first charging circuit and the capacitor of the second charging circuit may be controlled to charge the load according to the timing of the on-time of the first double-pole single-throw switch or the second double-pole single-throw switch.

Of course, in other embodiments, if the wireless charging device includes N charging circuits, the second switch assembly may also include an N-pole single-throw switch; the capacitors of the N charging circuits can be independently turned on in different time periods. Where N is an integer greater than 2. Thus, in this embodiment, the N charging operations may be performed to charge the load at different time periods, i.e., the N charging operations may be compatible with different devices or the same device at different time periods, and the N charging operations may provide different powers, different voltages, and/or different currents for different devices or the same device.

In some embodiments, the switch assembly of the wireless charging device may also include only the second type of switch assembly. Therefore, the capacitor of at least one charging circuit can be determined to charge the load according to the conduction or non-conduction of the second type of switch component.

Illustratively, as shown in fig. 12, the wireless charging device includes 2 charging circuits; each of the 2 charging circuits comprises a coil, a rectifying circuit and a capacitor; the 2 charging circuits are respectively: the first charging circuit and the second charging circuit. The switch assembly comprises a second type of switch assembly; the second type of switch assembly comprising: a fourth switching device and a fifth switching device. The fourth switching device K41 is connected between the positive electrode of the capacitor C1 of the first charging circuit and the load, and the fourth switching device K42 is connected between the positive electrode of the capacitor C2 of the second charging circuit and the load; the fifth switching device K51 is connected between the negative terminal of the capacitor C1 of the first charging circuit and the load, and the fifth switching device K52 is connected between the negative terminal of the capacitor C2 of the second charging circuit and the load. In this example, if the fourth switching device K41 and the fifth switching device K51 are closed and the fourth switching device K42 and the fifth switching device K52 are open, the capacitor C1 of the first charging circuit alone charges the load; alternatively, if the fourth switching device K41 and the fifth switching device K51 are open and the fourth switching device K42 and the fifth switching device K52 are closed, the capacitor C2 of the second charging circuit alone charges the load. In this way, in this example, it is also possible to implement that the first charging circuit or the second charging circuit separately supplies power to the load, so that charging of different devices can be compatible, and wireless charging of different powers, different voltages, and different currents can be provided for different devices or the same device. In addition, in this example, compared to the wireless charging device shown in fig. 10, the arrangement of the first type of switch assembly (including the first switch device K11, the second switch device K12, and the third switch device K13) is also reduced, so that the components of the wireless charging device can be reduced, and the hardware design cost can be reduced.

As shown in fig. 13, in some embodiments, further comprising:

and a control circuit 13, connected to the switch component 12, for controlling the switch component 12 to be in different conducting states, so as to conduct different charging connections of the capacitor 112 and the load 20 in different charging modes.

The control circuit 13 here may be any control chip or controller having signal processing capability; the control circuit 13 is used for controlling the conduction of the switch component.

For example, referring to fig. 4 and 13, the switch assembly 12 includes: a first type of switching element 121; the first type of switch assembly 121 includes: a first switching device K11, a second switching device K12 and a third switching device K13. If the control circuit 13 controls the first switching device K11 to be closed and the second switching device K12 and the third switching device K13 to be opened, the switching assembly 12 is in the first conducting state, and the charging mode is in the first charging mode. Alternatively, if the control circuit 13 controls the first switching device K11 to be opened and the second switching device K12 and the third switching device K13 to be closed, the switching assembly 12 is in the second conducting state, and the charging mode is in the second charging mode.

For example, referring to fig. 10 and 13, the switch assembly 12 includes: a first type of switching element 121 and a second type of switching element 122; the first type switching element 121 includes: a first switching device K11, a second switching device K12 and a third switching device K13; a second type of switch assembly 122, comprising: fourth switching devices K41 and K42, and fifth switching devices K51 and K52. If the control circuit 13 controls the second type of switching element 122 to be closed, and controls the first switching device K11 to be closed and the second switching device K12 and the third switching device K13 to be opened, the switching element 12 is in the first conducting state, and the charging mode is in the first charging mode. Alternatively, if the control circuit controls the second type of switch assembly 122 to be closed, and controls the first switch device K11 to be opened and the second switch device K12 and the third switch device 13 to be closed, the switch assembly 12 is in the second on state, and the charging mode is in the second charging mode. Or, if the control circuit 13 controls the first type switch element 121 to be turned off, the switch element 12 is in a third on state, and the charging mode is in a third charging mode; specifically, if the control circuit 13 controls the first type switching element 121 to be opened, and controls the fourth switching device K41 and the fifth switching device K51 to be closed, and the fourth switching device K42 and the fifth switching device K52 to be opened, the capacitor C1 of the first charging circuit alone charges the load; or, if the control circuit 13 controls the first type switching element 121 to be turned off, and if the fourth switch is turned off if the fourth switching device K41 and the fifth switching device K51 are turned off, and the fourth switching device K42 and the fifth switching device K52 are turned on, the capacitor C2 of the second charging circuit alone charges the load.

For example, referring to fig. 12 and 13, the switch assembly 12 includes a second type of switch assembly 122; the second type of switch assembly 122 includes: fourth switching devices K41 and K42, and fifth switching devices K51 and K52. If the control circuit 13 controls the fourth switching device K41 and the fifth switching device K51 to be closed and controls the fourth switching device K42 and the fifth switching device K52 to be opened, the capacitor C1 of the first charging circuit alone charges the load. Alternatively, if the control circuit 13 controls the fourth switching device K41 and the fifth switching device K51 to be opened and controls the fourth switching device K42 and the fifth switching device K52 to be closed, the capacitor C2 of the second charging circuit alone charges the load.

Therefore, in the embodiment of the present disclosure, different conduction states of the switch component can be controlled by the control circuit, so as to realize coupling of different charging modes of the wireless charging device, so that the wireless charging device can provide wireless charging with different powers, different voltages and/or different currents for different devices or the same device, that is, flexible configuration of wireless charging is realized.

Fig. 14 is a block diagram illustrating a terminal 800 including a wireless device according to an example embodiment. For example, the terminal 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

The terminal according to the embodiments of the present disclosure may include the wireless charging device according to any of the embodiments described above.

Referring to fig. 14, terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operation at the terminal 800. Examples of such data include instructions for any application or method operating on terminal 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power components 806 provide power to the various components of terminal 800. Power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for terminal 800.

The multimedia component 808 includes a screen providing an output interface between the terminal 800 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the terminal 800 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the terminal 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

Sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for terminal 800. For example, sensor assembly 814 can detect an open/closed state of terminal 800, the relative positioning of components, such as a display and keypad of terminal 800, sensor assembly 814 can also detect a change in position of terminal 800 or a component of terminal 800, the presence or absence of user contact with terminal 800, orientation or acceleration/deceleration of terminal 800, and a change in temperature of terminal 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 816 is configured to facilitate communications between terminal 800 and other devices in a wired or wireless manner. The terminal 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the terminal 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A wireless charging device, comprising: at least two charging circuits and a switch assembly; wherein the content of the first and second substances,

2. The wireless charging apparatus of claim 1, wherein the charging mode comprises at least one of:

3. The wireless charging device of claim 2, wherein the switch assembly comprises a first type of switch assembly; wherein the first type of switch assembly comprises: a first switching device, a second switching device, and a third switching device;

4. The wireless charging apparatus according to claim 3, wherein the first switching device is connected between a positive electrode of one of the capacitors of two adjacent charging circuits and a negative electrode of the other capacitor;

5. The wireless charging apparatus of claim 2,

in the first charging mode, the capacitors of at least two charging circuits output a first voltage and/or a first current in series;

6. The wireless charging apparatus of claim 1, wherein the charging mode comprises: in the third charging mode, the capacitors of at least two charging circuits are respectively connected and conducted with the load.

7. The wireless charging apparatus of claim 6, wherein the switch assembly comprises: the first-class switch component and at least two second-class switch components; a second switch assembly of said second type for connecting said capacitor of said charging circuit to said load;

8. The wireless charging apparatus of claim 7, wherein the second type of switch assembly comprises:

9. The wireless charging apparatus according to any one of claims 1 to 8, further comprising:

10. A terminal, characterized in that it comprises a wireless charging device according to any one of claims 1 to 9.