CN116683656A

CN116683656A - Wireless charging base and wireless charging system

Info

Publication number: CN116683656A
Application number: CN202211182735.1A
Authority: CN
Inventors: 武渊; 马雷; 马骋宇; 王朝
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-09-01

Abstract

The application discloses a wireless charging base and a wireless charging system, and relates to the technical field of terminals. The wireless charging base comprises a support, a first wireless charging coil, a second wireless charging coil, a control module and a sensor, wherein the support is used for placing equipment to be charged, and the first wireless charging coil, the second wireless charging coil, the control module and the sensor are arranged in the support. The wireless charging system comprises a wireless charging base, a first wireless charging coil, a second wireless charging coil, a sensor, a control module and a control module, wherein the first wireless charging coil, the second wireless charging coil and the sensor are all connected with the control module, the sensor is used for detecting the placement mode of equipment to be charged on the wireless charging base, and the control module controls one wireless charging coil of the first wireless charging coil and the second wireless charging coil to be conducted according to the detection result of the sensor. The wireless receiving coil receives electromagnetic signals sent by the first wireless charging coil or the second wireless charging coil to charge the equipment to be charged.

Description

Wireless charging base and wireless charging system

Technical Field

The application relates to the technical field of terminals, in particular to a wireless charging base and a wireless charging system.

Background

Along with development of technology, more and more electronic products (such as tablet computers) have a wireless charging function, and wireless charging is a new charging mode, so that the wireless charging device has the advantages of convenience in charging and the like, and the requirements of users on wireless charging speed are also stronger. However, at present, a big pain point of wireless charging is poor in anti-offset capability, if the electronic equipment and the charging base are not aligned, the offset is very large, so that the transmission power is reduced, the transmission efficiency is reduced, the heating of the charging coil and the receiving coil is aggravated, even the charging is broken, and potential safety hazards are possibly generated in extreme scenes.

The vertical wireless charging base is used for relieving the problems, and the existing vertical wireless base generally supports two forms of transverse placement and vertical placement of equipment to be charged for charging, but how to identify the placement form of the equipment to be charged and perform wireless charging for the equipment to be charged is a new problem.

Disclosure of Invention

The application provides a wireless charging base and a wireless charging system, wherein the wireless charging base can detect the placement form of electronic equipment placed on the charging base, and different wireless charging coils in the wireless charging base are switched to wirelessly charge equipment to be charged, so that the wireless charging system is simple in control logic, high in efficiency and good in stability.

In a first aspect, the present application provides a wireless charging base, where the wireless charging base is configured to wirelessly charge a device to be charged, and the device to be charged includes a wireless receiving coil. The wireless charging base comprises a support, a first wireless charging coil, a second wireless charging coil, a control module and a sensor, wherein the support is used for placing equipment to be charged, and the first wireless charging coil, the second wireless charging coil, the control module and the sensor are arranged in the support. The wireless charging system comprises a wireless charging base, a first wireless charging coil, a second wireless charging coil, a sensor, a control module and a control module, wherein the first wireless charging coil, the second wireless charging coil and the sensor are all connected with the control module, the sensor is used for detecting the placement mode of equipment to be charged on the wireless charging base, and the control module controls one wireless charging coil of the first wireless charging coil and the second wireless charging coil to be conducted according to the detection result of the sensor. The wireless receiving coil receives electromagnetic signals sent by the first wireless charging coil or the second wireless charging coil to charge the equipment to be charged.

On this basis, through setting up the sensor in wireless charging base, the sensor can detect the placement form of waiting to charge equipment and placing on wireless charging base. Through setting up first wireless charging coil and the wireless charging coil of second in wireless charging base, first wireless charging coil and the wireless charging coil of second can carry out wireless charging for the equipment that waits that charges of different placement forms, and control module is according to the testing result of sensor, and one wireless charging coil in the wireless charging coil of control first wireless charging coil and the wireless charging coil of second switches on, carries out wireless charging for the equipment that waits to charge. The control logic is simple and efficient, and the stability is good.

In one possible design of the first aspect, the placement configuration includes a vertical placement and a lateral placement. When the sensor is shielded by the to-be-charged device placed on the wireless charging base, the sensor sends a first signal to the control module, and the to-be-charged device is vertically placed on the wireless charging base. When the sensor is not shielded by the to-be-charged device placed on the wireless charging base, the sensor sends a second signal to the control module, and the to-be-charged device is horizontally placed on the wireless charging base.

On the basis, the sensor judges the placement form of the equipment to be charged by judging whether the sensor is shielded by the equipment to be charged or not, and the judgment logic is simple and accurate. It should be noted that, the device to be charged in the present application is not a product with the same height as the vertical line, such as a circle or a square, that is, the device to be charged is not equal in height when being placed transversely and placed longitudinally, so that the sensor can determine the placement form of the device to be charged by whether the sensor is shielded by the device to be charged.

In one possible design manner of the first aspect, in the default state, the second wireless charging coil in the wireless charging base is in an on state, and the first wireless charging coil is in an off state. When the sensor detects that the equipment to be charged is vertically placed on the wireless charging base, a first wireless charging coil in the wireless charging base is conducted, a second wireless charging coil is disconnected, and the first wireless charging coil charges the equipment to be charged through a wireless receiving coil. When the sensor detects that the equipment to be charged is transversely placed on the wireless charging base, a second wireless charging coil in the wireless charging base is conducted, the first wireless charging coil is disconnected, and the second wireless charging coil charges the equipment to be charged through the wireless receiving coil.

On the basis, through setting up second wireless charging coil and being in the on state, first wireless charging coil is in the default state of off state for wireless charging base can not switch back and forth the connected state between first wireless charging coil and the wireless charging coil of second, avoids frequently switching in error, reduces equipment power simultaneously. The first wireless charging coil and the second wireless charging coil are switched to be in different working states according to the detection result of the sensor, so that the wireless charging base can be charged for the equipment to be charged in different placement modes. That is, the device to be charged is charged by the second wireless charging coil in a default state, and at this time, the device to be charged is placed horizontally. Only when the equipment to be charged is placed vertically, the equipment to be charged is switched to be charged through the first wireless charging coil.

In one possible design manner of the first aspect, the support includes a groove for placing the device to be charged, and the distance from the sensor to the bottom of the groove is greater than the width of the device to be charged and less than the length of the device to be charged, and the length of the device to be charged is greater than the width of the charging device.

On this basis, through setting up the recess, be favorable to placing the equipment that charges on wireless charging base, through setting up the distance of sensor to recess bottom and the length and the width of equipment that charges, be favorable to realizing the sensor and treat the detection of the equipment that charges and place the form.

In one possible embodiment of the first aspect, the first wireless charging coil and the second wireless charging coil are each located at a different height of the support. When the equipment to be charged is vertically placed on the wireless charging base, the first wireless charging coil is matched with the wireless receiving coil; when the equipment to be charged is transversely placed on the wireless charging base, the second wireless charging coil is matched with the wireless receiving coil.

On the basis, the first wireless charging coil and the second wireless charging coil are arranged at different heights of the support respectively, so that the wireless charging device is favorable for being matched with wireless receiving coils in devices to be charged in different placement modes, and the devices to be charged are subjected to wireless charging.

In one possible design of the first aspect, the sensor is any one of a proximity light sensor, an ultrasonic sensor, or a hall sensor.

In one possible design manner of the first aspect, the wireless charging base further includes a charging interface, a voltage stabilizing module and a rectifying module, the voltage stabilizing module is electrically connected with the charging interface, the rectifying module is electrically connected with the voltage stabilizing module, and the first wireless charging coil and the second wireless charging coil are respectively electrically connected with the rectifying module.

On this basis, through setting up interface, voltage stabilizing module and the rectifier module of charging, the interface of charging provides power input for wireless charging base, and voltage stabilizing module carries out voltage adjustment to the signal of telecommunication of interface input that charges, and rectifier module carries out the rectification to the signal of telecommunication to wireless charging coil can outwards produce the energy, in order to carry out wireless charging.

In one possible embodiment of the first aspect, the first wireless charging coil is connected to the rectifier module via a first control switch, and the second wireless charging coil is connected to the rectifier module via a second control switch. The first control switch and the second control switch are electrically connected with the control module, and the control module controls the on-off of the first control switch and the second control switch.

On the basis, the application provides a specific implementation form for switching the on states of the first wireless charging coil and the second wireless charging coil by controlling the switches of the first control switch and the second control switch, and the control mode has the characteristics of simple structure, stability and high efficiency.

In a second aspect, the present application provides a wireless charging system, including a device to be charged and a wireless charging base according to any one of the first aspect and any one of the possible designs thereof, where the device to be charged includes a wireless receiving coil, the device to be charged is placed on the wireless charging base, and the first wireless charging coil or the second wireless charging coil in the wireless charging base performs wireless charging on the device to be charged through the wireless receiving coil.

In a third aspect, the present application provides a computer-readable storage medium comprising computer instructions. The computer instructions, when executed on the wireless charging base, cause the wireless charging base to perform the functions of the wireless charging base as described in the first aspect and any one of its possible designs.

In a fourth aspect, the application provides a computer program product for causing a computer to perform the functions of the wireless charging dock as described in the first aspect and any one of its possible designs when the computer program product is run on the computer.

It will be appreciated that the advantages achieved by the wireless charging system according to the second aspect, the computer readable storage medium according to the third aspect, and the computer program product according to the fourth aspect provided above may refer to the advantages as in the first aspect and any possible design manner thereof, and are not described herein.

Drawings

Fig. 1 is a schematic diagram of a wireless charging base according to an embodiment of the present application;

fig. 2 is a schematic diagram of another wireless charging base according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a wireless charging base according to an embodiment of the present application;

Fig. 4 is a schematic structural diagram of a wireless charging system according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of another wireless charging system according to an embodiment of the present application;

fig. 6 shows a schematic system architecture of a wireless charging system according to an embodiment of the present application;

fig. 7 is a flowchart of a wireless charging system detecting handshake state according to an embodiment of the present application;

fig. 8 is a hardware configuration diagram of a wireless charging base according to an embodiment of the present application;

fig. 9 is a hardware configuration diagram of a device to be charged in a wireless charging system according to an embodiment of the present application.

Detailed Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In embodiments of the application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

It is to be understood that the terminology used in the description of the various examples described herein is for the purpose of describing particular examples only and is not intended to be limiting. As used in the description of the various described examples, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

It will also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. The term "and/or" is an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.

It should also be understood that in the present application, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, e.g., the term "connected" may be a fixed connection, a sliding connection, a removable connection, an integral body, etc.; can be directly connected or indirectly connected through an intermediate medium.

It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should be appreciated that reference throughout this specification to "one embodiment," "another embodiment," "one possible design" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment of the application" or "in another embodiment of the application" or "one possible design approach" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In order to facilitate understanding of the technical scheme of the present application, prior to writing the embodiment of the present application, a technical background related to the technical scheme of the present application, that is, a wireless charging principle between a charging base and a device to be charged in the prior art, is briefly described.

In traditional charging scheme, wait to charge equipment and generally keep flat on wireless charging base, such charging methods make the user generally unable to use when charging wait to charge equipment to lead to waiting to charge easily to take place the skew between equipment and the wireless charging base in the use, lead to charging power decline, transmission efficiency decline, seriously influence user's use experience.

Based on this, a vertical wireless charging base has been developed, alleviating this problem. Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of a wireless charging base provided by an embodiment of the present application, and fig. 2 is a schematic diagram of another wireless charging base provided by an embodiment of the present application. As shown in FIG. 1, the charging equipment is placed on the vertical wireless charging base, and due to the bottom supporting step at the bottom of the vertical wireless charging base, the wireless charging coil is basically not deviated when the user vertically places the charging equipment on the vertical wireless charging base as long as the wireless charging coil is arranged at a reasonable position, and the wireless charging coil can charge the charging equipment normally.

As shown in fig. 2, to develop a use scenario of the user, the upright wireless charging base may also allow the user to laterally place the device to be charged for wireless charging. For example, when the device to be charged is a mobile phone or a tablet, the user can watch a movie while performing wireless charging. Because the support base step on the vertical wireless charging base is shorter, a user can normally place the middle part of the equipment to be charged on the support base step, and the wireless charging coil on the wireless charging base can be aligned with the wireless receiving coil in the equipment to be charged, so that the equipment to be charged is charged. Therefore, in the process of wirelessly charging the equipment to be charged by adopting the vertical wireless charging base, larger deviation generally cannot occur.

Because this kind of vertical wireless charging base can support to wait to charge equipment and transversely place and charge, also support to wait to charge equipment and vertically place and charge. Therefore, in general, two wireless charging coils are integrated in the wireless charging base, and the wireless charging base is divided into an upper coil and a lower coil, and a wireless receiving coil is arranged in the equipment to be charged. When the equipment to be charged is vertically placed, the upper coil in the wireless charging base is matched with the wireless receiving coil in the equipment to be charged, and wireless charging is performed. When the equipment to be charged is transversely placed, the lower coil in the wireless charging base is matched with the wireless receiving coil in the equipment to be charged, and wireless charging is carried out. However, how to identify the placement form of the mobile phone and charge the mobile phone by using a suitable wireless charging coil is a problem to be solved in the prior art.

In the prior art, when the wireless charging base charges the equipment to be charged, the wireless charging base can be shown in fig. 1 and 2 and comprises an upper coil and a lower coil. The coil switching circuit logic of the wireless charging base is as follows: and the charging chip controller is used for controlling the communication condition of the upper coil and the lower coil, and the upper coil and the lower coil can be conducted only simultaneously, so that the requirement of a user on a charging scene is met.

The upper coil and the lower coil are respectively controlled by a control switch, and the charging chip controller alternately switches the on-off of the control switch in a period. For example, at time 0, the upper switch of the upper coil is turned on to transmit the control signal to the outside through the upper coil; at the moment of 0.5T, the lower switch of the lower coil is conducted and controlled, and at the moment, a control signal is sent outwards through the lower coil.

When the user puts the device to be charged on the wireless charging base, if the wireless receiving coil in the device to be charged receives the control signal, a response signal is returned, and the response signal is received by the wireless charging coil on the wireless charging base. If the upper coil in the wireless charging base receives the response signal, the upper coil in the surface wireless charging base is aligned with the wireless receiving coil in the equipment to be charged, and the charging chip controller keeps the upper coil switch closed unchanged and charges the equipment to be charged with the upper coil continuously.

If the lower coil in the wireless charging base receives the response signal, the lower coil in the surface wireless charging base is aligned with the wireless receiving coil in the equipment to be charged, and the charging chip controller keeps the switch of the lower coil unchanged, and continuously charges the equipment to be charged by the lower coil.

It should be noted that the switch in the prior art is not necessarily implemented by a single device, because to meet the conduction complementarity of the two coils, a relatively complex circuit is usually required to be designed to ensure the periodic switching between the upper coil and the lower coil, so as to ensure the convenience of use for users.

The above scheme needs to periodically switch the upper coil and the lower coil, and needs to continuously detect whether the upper coil and the lower coil receive the response signal, and then specifically judge which coil is switched to be in a working state. The whole control logic is complex, frequent switching and detection are needed, and stability and other problems are easy to occur.

In order to solve the above-mentioned problems in the prior art, the embodiment of the application provides a wireless charging system, which can support wireless charging when a device to be charged is placed horizontally or vertically, and does not need frequent and periodic switching when the device to be charged is placed horizontally or vertically before the device to be charged is charged wirelessly, and has the advantages of simple control logic, high detection speed and high system stability. Embodiments of the present application will be described below with reference to fig. 3 to 9.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a wireless charging base according to an embodiment of the present application. As shown in fig. 3, the wireless charging base 100 includes therein a cradle 10 for placing a device to be charged, a first wireless charging coil 140, a second wireless charging coil 150, a control module 160 (not shown in fig. 4), and a sensor 170. The bracket 10 includes a bottom bracket 12 and a side plate 11 connected to the bottom bracket 12, wherein the side plate 11 and the bottom bracket 12 may be vertical or nearly vertical (for example, an angle between the side plate 11 and the bottom bracket 12 is 90 ° to 120 °). Be provided with a recess 20 on the collet 12, when needs charge, will wait to charge equipment and place in this recess 20, can avoid waiting to charge equipment to remove at will, the width of recess 20 can be confirmed according to waiting to charge equipment's thickness, generally set to slightly be greater than waiting to charge equipment's thickness can. In the embodiment of the application, the device to be charged is taken as a mobile phone for illustration.

The first wireless charging coil 140, the second wireless charging coil 150 and the sensor 170 are disposed in the side plate 11 of the bracket 10, and the control module 160 may be disposed in the side plate 11 or in the shoe 12. The wireless receiving coil 210 is arranged in the mobile phone, the mobile phone is placed on the wireless charging base 100, and the wireless receiving coil 210 in the mobile phone charges the mobile phone by receiving electromagnetic signals sent by the first wireless charging coil 140 or the second wireless charging coil 150. The first wireless charging coil 140 and the second wireless charging coil 150 are disposed at different height positions in the side plate 11, and both wireless charging coils can independently charge the mobile phone, specifically, the first wireless charging coil 140 or the second wireless charging coil 150 can be selected to charge according to the position of the wireless receiving coil 210 in the mobile phone.

The first wireless charging coil 140, the second wireless charging coil 150 and the sensor 170 are all connected with the control module 160, and the control module 160 controls one wireless charging coil of the first wireless charging coil 140 and the second wireless charging coil 150 to be conducted according to the detection result of the sensor 170. The sensor 170 is used for detecting a placement form of the mobile phone on the wireless charging base 100, and the placement form of the mobile phone on the wireless charging base 100 includes a lateral placement and a vertical placement. The principle of the sensor 170 detecting the placement of the mobile phone will be described.

Fig. 4 is a schematic structural diagram of a wireless charging system according to an embodiment of the present application, where the schematic structural diagram shows a scenario in which a mobile phone is vertically placed on a wireless charging base 100. Fig. 5 is a schematic structural diagram of another wireless charging system according to an embodiment of the present application, which illustrates a scenario in which a mobile phone is laterally placed on a wireless charging base 100. The wireless charging system includes a wireless charging base 100 and a device to be charged, where the device to be charged may be a mobile phone, a tablet, a smart watch, etc., and in this embodiment, the device to be charged is illustrated by taking the mobile phone as an example.

As shown in fig. 4 and 5, the side plate 11 of the wireless charging base 100 is provided with a sensor 170, and a linear distance between the sensor 170 and the bottom of the groove 20 on the base 12 is a first distance, where the first distance is smaller than the height of the mobile phone but larger than the width of the mobile phone. It should be noted that the first distance may refer to a distance between the center of the sensor 170 and the bottom of the groove 20, or may refer to a distance between the bottom of the sensor 170 and the bottom of the groove 20, and in this embodiment, the first distance is a distance between the bottom of the sensor 170 and the bottom of the groove 20.

As shown in fig. 4, when the mobile phone is vertically placed on the wireless charging base 100, the first distance is smaller than the height of the mobile phone, the sensor 170 on the side plate 11 is blocked by the mobile phone, at this time, the sensor 170 sends a first signal to the control module 160, which indicates that the sensor 170 is blocked, and the control module 160 determines that the mobile phone is vertically placed on the wireless charging base 100 according to the first signal. As shown in fig. 5, when the mobile phone is horizontally placed on the wireless charging base 100, since the first distance is greater than the width of the mobile phone, the sensor 170 on the side plate 11 is not blocked by the mobile phone, and at this time, the sensor 170 sends a second signal to the control module 160, indicating that the sensor 170 is not blocked, and the control module 160 determines that the mobile phone is horizontally placed on the wireless charging base 100 according to the second signal.

In the embodiment of the present application, the sensor 170 may be a proximity light sensor 170, and when the mobile phone shields the proximity light sensor 170, the signal in the proximity light sensor 170 will change, so as to determine the placement form of the mobile phone according to different signals. In addition, the sensor 170 may be an ultrasonic sensor 170 or a HALL sensor 170 (HALL sensor 170), and the principle of detecting the placement form of the mobile phone is similar to that of the proximity sensor 170, specifically, the ultrasonic sensor 170 may determine whether the ultrasonic sensor 170 is blocked by the mobile phone by returning ultrasonic waves. When the sensor 170 is a hall sensor 170, a magnet can be arranged in the mobile phone, and when the mobile phone is placed in different forms, the magnitudes of magnetic fields sensed by the hall sensor 170 are different, and the generated hall voltages are also different, so that the placement form of the mobile phone can be judged according to the magnitudes of the generated hall voltages.

Because the first wireless charging coil 140 and the second wireless charging coil 150 are disposed at different height positions in the side plate 11, only one of the wireless charging coils is needed when the mobile phone is wirelessly charged, and the mobile phone can be horizontally or vertically placed on the wireless charging base 100. Accordingly, the positions of the first wireless charging coil 140 and the second wireless charging coil 150 may be determined based on the position of the wireless receiving coil 210 in the handset.

As shown in fig. 4 or fig. 5, the first wireless charging coil 140 and the second wireless charging coil 150 are respectively disposed at different height positions in the side plate 11, wherein a distance between a center of the first wireless charging coil 140 and a bottom of the recess 20 is a second distance, and a distance between a center of the second wireless charging coil 150 and a bottom of the recess 20 is a third distance. Correspondingly, the distance from the center of the wireless receiving coil 210 in the mobile phone to the bottom of the mobile phone is the fourth distance, and the distance from the center of the wireless receiving coil 210 in the mobile phone to the side of the mobile phone is the fifth distance. In order to achieve the purpose that the wireless charging base 100 can perform wireless charging on the mobile phone when the mobile phone is placed on the wireless charging base 100 in different forms. The setting may be performed as required by setting the second distance equal to the fourth distance and setting the third distance equal to the fifth distance. That is, when the mobile phone is vertically placed on the wireless charging base 100, the wireless receiving coil 210 in the mobile phone is exactly matched with the first wireless charging coil 140 in the wireless charging base 100, and the charging base charges the mobile phone through the first wireless charging coil 140. When the mobile phone is horizontally placed on the wireless charging base 100, the wireless receiving coil 210 in the mobile phone is just matched with the second wireless charging coil 150 in the wireless charging base 100, and the charging base charges the mobile phone through the second wireless charging coil 150. Of course, the second distance may be equal to the fifth distance, and the third distance may be equal to the fourth distance. The charging principle is the same as that of the scheme in which the first coil and the second coil are interchanged.

In order to control the corresponding wireless charging coil to charge the mobile phone according to different placement modes of the mobile phone, a circuit configuration diagram of the wireless charging base 100 when charging the mobile phone is described below.

Referring to fig. 6, fig. 6 is a schematic diagram of a system architecture of a wireless charging system according to an embodiment of the present application. The wireless charging system includes a wireless charging base 100 and a cell phone.

As shown in fig. 6, the wireless charging base 100 includes: the USB interface 110, the voltage stabilizing module 120, the rectifying module 130, the first wireless charging coil 140 and the second wireless charging coil 150. The USB interface 110 is electrically connected to the voltage stabilizing module 120, the voltage stabilizing module 120 is electrically connected to the rectifying module 130, the first wireless charging coil 140 and the second wireless charging coil 150 are electrically connected to the rectifying module 130, and the first wireless charging coil 140 and the second wireless charging coil 150 are connected in parallel to the rectifying module 130.

An external power supply connected to the wireless charging base 100 outputs a dc signal through the USB interface 110, and the voltage stabilizing module 120 performs a boosting process on the dc signal, for example, the voltage stabilizing module 120 may be a BOOST chip. The dc signal after the step-up process reaches the rectifying module 130, the rectifying module 130 rectifies the dc signal into an ac signal, and the rectified ac signal is input to the first wireless charging coil 140 or the second wireless charging coil 150, and the first wireless charging coil 140 or the second wireless charging coil 150 generates an alternating electromagnetic field in response to the ac signal.

The wireless charging base 100 further includes: the control module 160, the sensor 170, the first control switch 180 and the second control switch 190, the sensor 170 is electrically connected with the control module 160, the control module 160 is electrically connected with the inverter bridge, and in addition, the control module 160 is electrically connected with the first control switch 180 and the second control switch 190 respectively. The first control switch 180 is disposed in a connection circuit between the first wireless charging coil 140 and the inverter bridge, and the second control switch 190 is disposed in a connection circuit between the second wireless charging coil 150 and the inverter bridge.

The mobile phone comprises: wireless receiving coil 210, wireless receiving control module 220, charging control module 230 and battery 240. The wireless receiving coil 210 is electrically connected with the wireless receiving control module 220, the wireless receiving control module 220 is electrically connected with the charging control module 230, and the charging control module 230 is electrically connected with the battery 240.

The sensor 170 may be a proximity sensor in the wireless charging base 100, or may be an ultrasonic sensor in the wireless charging base 100, or may be a hall sensor in the wireless charging base 100, and in the embodiment of the present application, the sensor 170 is taken as a proximity sensor for example. The voltage stabilizing module 120 may be a BOOST chip in the wireless charging base 100, or may be a BUCK-BOOST chip. The rectifying module 130 may be a rectifying bridge in the wireless charging base 100; the sensor 170 may be a proximity light sensor 170 in the wireless charging base 100, or may be an ultrasonic sensor 170 in the wireless charging base 100, or may be a hall sensor 170 in the wireless charging base 100, and the control module 160 may be a TX chip in the wireless charging base 100. The wireless receiving control module 220 may be an RX chip in a mobile phone, and the charging control module 230 may be a charger in a mobile phone.

In the wireless charging process of the wireless charging base 100 to the mobile phone, the USB interface 110 may be used as a power input interface, and an external power supply connected to the wireless charging base 100 outputs a dc signal through the USB interface 110, and the voltage stabilizing module 120 performs voltage stabilizing/boosting processing on the dc signal, for example, the voltage stabilizing module 120 may be a BOOST chip. The dc signal after the voltage stabilization/boosting process is input to the rectifying module 130, the rectifying module 130 rectifies the received dc signal into an ac signal, the rectified ac signal is input to the first wireless charging coil 140 or the second wireless charging coil 150 after telecommunication, and the first wireless charging coil 140 or the second wireless charging coil 150 generates an alternating electromagnetic field in response to the ac signal.

The wireless receiving coil 210 on the handset is coupled with the first wireless charging coil 140 or the second wireless charging coil 150 in the wireless charging base 100. The wireless receiving coil 210 senses an alternating electromagnetic field emitted by the first wireless charging coil 140 or the second wireless charging coil 150, and can generate an alternating current signal, and then sends the alternating current signal to the wireless receiving control module 220, the wireless receiving control module 220 can rectify the alternating current signal into a direct current signal, and then inputs the direct current signal to the charging control module 230, and the charging control module 230 can manage the direct current signal, for example, manage the input current and voltage, and then input the direct current signal to the battery 240 of the mobile phone, so that the battery 240 can charge the battery 240, and the battery 240 serves as a power supply of the mobile phone to supply power to all elements in the mobile phone.

In the embodiment of the present application, in the default state, the first control switch 180 in the wireless charging base 100 is in an open state, and the second control switch 190 in the wireless charging base 100 is in a closed state. The wireless charging base 100 confirms the placement of the mobile phone by the sensor 170 before wirelessly charging the mobile phone.

For example, when the mobile phone is vertically placed on the wireless charging base 100, the mobile phone can shield the proximity light sensor 170 on the wireless charging base 100, the proximity light sensor 170 transmits a first signal to the control module 160, and after the control module 160 receives the first signal, the proximity light sensor 170 is judged to be in a shielded state, and the mobile phone is judged to be vertically placed on the wireless charging base 100. At this time, the control module 160 controls the first control switch 180 to switch from the open state to the closed state, and controls the second switch to switch from the closed state to the open state, that is, controls the first wireless charging coil 140 to enter the operating state, and controls the second wireless charging coil 150 to be in the inactive state. Because the mobile phone is vertically placed on the wireless charging base 100, the wireless receiving coil 210 in the mobile phone is just opposite to the first wireless charging coil 140 in the wireless charging base 100, so that the mobile phone is charged by using the first wireless charging coil 140.

When the mobile phone is horizontally placed on the wireless charging base 100, the mobile phone does not shade the proximity light sensor 170 on the wireless charging base 100, the proximity light sensor 170 transmits a second signal to the control module 160, and after the control module 160 receives the second signal, the proximity light sensor 170 is judged to be in a non-shaded state, and the mobile phone is judged to be horizontally placed on the wireless charging base 100. At this time, the control module 160 controls the first control switch 180 to maintain the open state in the default state, and controls the second switch to maintain the closed state in the default state, that is, controls the first wireless charging coil 140 to be in a stopped state, and the second wireless charging coil 150 enters the working state. Since the mobile phone is horizontally placed on the wireless charging base 100, the wireless receiving coil 210 in the mobile phone is just opposite to the second wireless charging coil 150 in the wireless charging base 100, so that the mobile phone is charged by using the second wireless charging coil 150.

It should be noted that, the first control switch 180 in the wireless charging base 100 is in an open state in a default state, the second control switch 190 is in a closed state in a default state, that is, in the default state, the first wireless charging coil 140 and the charging circuit in the wireless charging base 100 are kept in an open state, the second wireless charging coil 150 and the charging circuit in the wireless charging base 100 are kept in a connected state, and the mobile phone is placed on the wireless charging base 100 transversely to perform charging. Only when the sensor 170 detects that the mobile phone is vertically placed on the wireless charging base 100, the control module 160 in the wireless charging base 100 is switched to a state that the first wireless charging coil 140 is connected to the charging circuit in the wireless charging base 100, and the second wireless charging coil 150 is disconnected from the charging circuit in the wireless charging base 100.

In addition, the default state of the wireless charging base 100 may also be set as follows: the first wireless charging coil 140 and the charging circuit in the wireless charging base 100 are kept in a connection state, the second wireless charging coil 150 and the charging circuit in the wireless charging base 100 are kept in a disconnection state, and the mobile phone can be vertically placed on the wireless charging base 100 for charging. It is only necessary to adjust the first control switch 180 to be in the closed state in the default state, and the second control switch 190 to be in the open state in the default state. When the sensor 170 detects that the mobile phone is laterally placed on the wireless charging base 100, the control module 160 in the wireless charging base 100 switches the first control switch 180 to be in an open state and switches the second control switch 190 to be in a closed state, so that the mobile phone which is laterally placed can be charged by the second wireless charging coil 150. A person skilled in the art can set whether the default state is to charge a vertically placed mobile phone or a horizontally placed mobile phone according to the needs, and set different default states and switch to the same working principle of the other working state.

In the embodiment of the present application, before wireless charging is performed between the wireless charging base 100 and the device to be charged 200 (mobile phone), whether handshake between the two devices is successful is detected. The main detection flow is as follows:

Referring to fig. 7, fig. 7 is a flowchart of a wireless charging system detecting handshake state according to an embodiment of the present application. Referring to fig. 7, in the embodiment of the present application, the first wireless charging coil 140 is in the disconnected state in the default state, and the second wireless charging coil 150 is in the connected state. Therefore, before the wireless charging base 100 and the device to be charged handshake succeed, the second wireless charging coil 150 in the wireless charging base 100 will send out a PING signal, and the first wireless charging coil 140 will not send out a PING signal. After the user places the device (mobile phone) to be charged on the wireless charging base 100, the sensor 170 on the wireless charging base 100 detects the placement form of the device (mobile phone) to be charged. When the sensor 170 detects that the mobile phone is transversely placed on the wireless charging base 100, the second wireless charging coil 150 on the wireless charging base 100 continues to maintain a connection state and continues to send a PING signal, after the mobile phone placed on the wireless charging base 100 receives the PING signal sent by the second wireless charging coil 150, the wireless charging base 100 returns a signal strength packet and a signal Ready command (rx_ready), and after the wireless charging base 100 receives the signal strength packet and the signal Ready command (rx_ready), the wireless charging base 100 and the device to be charged are indicated to handshake successfully, normal wireless charging, communication interaction and other operations can be performed between the wireless charging base 100 and the device to be charged (mobile phone), and at this time, the second wireless charging coil 150 charges the device to be charged.

When the sensor 170 in the wireless charging base 100 detects that the mobile phone is vertically placed on the wireless charging base 100, the control module 160 on the wireless charging base 100 will switch the second wireless charging coil 150 to the off state and switch the first wireless charging coil 140 to the connected state. At this time, the wireless charging base 100 receives the signal strength packet and the signal Ready command (rx_ready), which indicates that the wireless charging base 100 and the device to be charged are handshaking successfully, and normal operations such as wireless charging and communication interaction can be performed between the wireless charging base 100 and the device to be charged (mobile phone), and the first wireless charging coil 140 charges the device to be charged.

Referring to fig. 8, fig. 8 is a hardware configuration diagram of a wireless charging base according to an embodiment of the present application. As shown in fig. 8, the wireless charging base may include a wireless communication module 500, a processor 510, a memory 520, a sensor 530, a charging interface 540, a charging management module 550 (an inverter bridge in the present application), a first wireless charging coil 560, a second wireless charging coil 570, and the like.

It will be appreciated that the configuration illustrated in this embodiment does not constitute a specific limitation on the wireless charging base. In other embodiments, the wireless charging base may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The memory 520 may be used to store program codes, such as program codes for wirelessly charging a device to be charged (e.g., a cell phone), among others. The memory 520 may also have stored therein a bluetooth address for uniquely identifying the wireless charging base. In addition, the memory 520 may also store connection data of the electronic device that was successfully paired with the wireless charging dock. For example, the connection data may be a bluetooth address of an electronic device that was successfully paired with the wireless charging dock. Based on the connection data, the wireless charging base can be automatically paired with the electronic device without configuring a connection therebetween, such as performing validity verification, etc. The bluetooth address may be a medium access control (media access control, MAC) address.

Processor 510 may be configured to execute the application code described above and invoke the relevant modules to implement the functionality of the wireless charging dock in embodiments of the present application. For example, a wireless charging function of the wireless charging base is realized. Processor 510 may include one or more processing units, and the different processing units may be separate devices or may be integrated into one or more processors 510. The processor 510 may be embodied as an integrated control chip or may be comprised of circuitry including various active and/or passive components configured to perform the functions attributed to the processor 510 as described in embodiments of the present application. The processor of the wireless charging base may be a microprocessor.

The wireless communication module 500 may be used to support data exchange between a wireless charging base and other electronic devices including Bluetooth (BT), wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), and the like.

In some embodiments, the wireless communication module 500 may be a bluetooth chip. The wireless charging base can be paired with the Bluetooth chip of other electronic equipment through the Bluetooth chip and establish wireless connection, so that wireless communication between the wireless charging base and the other electronic equipment is realized through the wireless connection.

In addition, the wireless communication module 500 may further include an antenna, and the wireless communication module 500 receives electromagnetic waves via the antenna, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 510. The wireless communication module 500 may also receive a signal to be transmitted from the processor 510, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via an antenna.

In some embodiments, the wireless charging dock may support functionality to wirelessly charge a device to be charged. The charge management module 550 may make electrical signal inputs to the first wireless charging coil 560 and/or the second wireless charging coil 570. Specifically, the first wireless charging coil 560 and the second wireless charging coil 570 are connected to the charging management module 550 through matching circuits, respectively. The first wireless charging coil 560 and/or the second wireless charging coil 570 may generate an alternating electromagnetic field in response to the alternating current signal input by the charging management module 550, to wirelessly charge the device to be charged.

The charging management module 550 manages wireless charging to the outside and can also supply power to the electronic components inside the wireless charging base. The charge management module 550 receives power input from the charge interface to power the processor 510, memory 520, sensor 530, external memory, etc. In other embodiments, charge management module 550 may also be disposed in processor 510.

It should be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the wireless charging base. It may have more or fewer components than shown in fig. 8, may combine two or more components, or may have a different configuration of components. For example, the outer surface of the wireless charging base may further include a button, an indicator light (which may indicate a charging state, an incoming/outgoing call, a pairing mode, etc.), a display screen (which may prompt a user for related information), and the like. The key may be a physical key or a touch key (used in cooperation with a touch sensor), and is used for triggering operations such as starting up, shutting down, starting charging, stopping charging, and the like.

Referring to fig. 9, fig. 9 is a hardware configuration diagram of a device to be charged in a wireless charging system according to an embodiment of the present application. As shown in fig. 9, the device to be charged may include a processor 610, a memory 620, a wireless charging receiving module 630, a charging management module 640, a wireless receiving coil 650, a battery 660, a wireless communication module 670, a display 680, and the like.

The memory 620 may be used to store program codes, such as program codes for receiving a wireless charging signal of a wireless charging dock, and the like. The memory 620 may also store therein a bluetooth address having a unique identification between the device to be charged and other electronic devices. The bluetooth address may be a medium access control (media access control, MAC) address.

The processor 610 may be configured to execute the application code and invoke the relevant modules to implement the functionality of the wireless device to be charged in the embodiments of the present application. For example, a wireless charging function, a wireless communication function, and the like of the device to be charged are realized. The processor 610 may include one or more processing units, and the different processing units may be separate devices or may be integrated into the one or more processors 610. The processor 610 may be an integrated control chip or may be comprised of circuitry including various active and/or passive components configured to perform the functions attributed to the processor 610 described in embodiments of the present application. Wherein the processor of the device to be charged 200 may be a microprocessor.

The wireless communication module 670 may be used for data exchange between a device to be charged (e.g., a mobile phone) and other electronic devices (e.g., a mobile phone) including Bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), and the like.

In some embodiments, the wireless communication module 670 may be a bluetooth chip. The device to be charged can be paired with the Bluetooth chip of other electronic devices through the Bluetooth chip and establish wireless connection, so that wireless communication between the device to be charged and the other electronic devices is realized through the wireless connection.

In addition, the wireless communication module 670 may further include an antenna, and the wireless communication module 670 receives electromagnetic waves via the antenna, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 610. The wireless communication module 670 may also receive signals to be transmitted from the processor 610, frequency modulate them, amplify them, and convert them to electromagnetic waves for radiation via an antenna.

In some embodiments, the charge management module 640 may receive wireless charging input through a wireless receiving coil of the device to be charged. Specifically, the charging management module 640 is connected to the wireless receiving coil through a matching circuit. The wireless receiving coil can be coupled with the first wireless charging coil/the second wireless charging coil of the wireless charging base, and the wireless receiving coil can sense an alternating electromagnetic field emitted by the first wireless charging coil/the second wireless charging coil of the wireless charging base to generate an alternating electric signal. The alternating electrical signal generated by the wireless receiving coil is transmitted to the charge management module 640 through the matching circuit so as to wirelessly charge the battery 660.

The charging management module 640 may also supply power to the device to be charged while charging the battery 660. The charge management module 640 receives input from the battery 660 and provides power to the processor 610, the memory 620, the external memory, the wireless communication module 670, and the like. The charge management module 640 may also be configured to monitor battery capacity, battery cycle times, battery health (leakage, impedance) and other parameters of the battery 660. In other embodiments, the charge management module 640 may also be disposed in the processor 610.

It should be noted that the matching circuit may be integrated in the charge management module 640, or the matching circuit may be independent of the charge management module 640, which is not limited in the embodiment of the present application. Fig. 9 illustrates a schematic hardware configuration of a device to be charged, taking an example that a matching circuit may be integrated in the charge management module 640.

It should be noted that the wireless charging receiving module 630 may be integrated with all functions of the wireless receiving coil and the wireless receiving control module shown in fig. 6. The wireless charging receiving module 630 of the device to be charged can be connected with electronic devices such as a wireless charging base through a wireless charging device, and the electronic devices such as the wireless charging base supply power for the device to be charged.

The display 680 may have a touch sensor integrated therein. The device to be charged 200 may receive a control command of the user to the device to be charged 200 through the display screen 680.

It is to be understood that the structure illustrated in the present embodiment does not constitute a specific limitation on the apparatus 200 to be charged. In other embodiments, the device to be charged may include more or less components than illustrated, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

For example, a key, an indicator lamp (which may indicate the state of the power, incoming/outgoing call, pairing mode, etc.) and the like may be further included on the outer surface of the device to be charged 200. The key may be a physical key or a touch key (used in cooperation with a touch sensor), and is used for triggering operations such as starting up, shutting down, starting charging, stopping charging, and the like.

The embodiment of the application also provides a computer storage medium, which comprises computer instructions, when the computer instructions are run on the wireless charging base, the wireless charging base is caused to execute the functions or steps executed by the wireless charging system in the embodiment.

Embodiments of the present application also provide a computer program product which, when run on a computer, causes the computer to perform the functions or steps performed by the wireless charging system in the embodiments described above.

It will be apparent to those skilled in the art from this description that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and the parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The wireless charging base is used for wirelessly charging equipment to be charged, and the equipment to be charged comprises a wireless receiving coil and is characterized by comprising a bracket used for placing the equipment to be charged, a first wireless charging coil, a second wireless charging coil, a control module and a sensor, wherein the first wireless charging coil, the second wireless charging coil, the control module and the sensor are arranged in the bracket;

the first wireless charging coil, the second wireless charging coil and the sensor are all connected with the control module, the sensor is used for detecting the placement form of the equipment to be charged on the wireless charging base, and the control module controls one wireless charging coil of the first wireless charging coil and the second wireless charging coil to be conducted according to the detection result of the sensor;

The wireless receiving coil receives electromagnetic signals sent by the first wireless charging coil or the second wireless charging coil to charge the equipment to be charged.

2. The wireless charging dock of claim 1, wherein the placement configuration comprises a vertical placement and a lateral placement;

when the sensor is shielded by the to-be-charged equipment placed on the wireless charging base, the sensor sends a first signal to the control module, wherein the first signal indicates that the to-be-charged equipment is vertically placed on the wireless charging base;

when the sensor is not shielded by the to-be-charged device placed on the wireless charging base, the sensor sends a second signal to the control module, indicating that the to-be-charged device is laterally placed on the wireless charging base.

3. The wireless charging base of claim 1 or 2, wherein in a default state, the second wireless charging coil in the wireless charging base is in an on state and the first wireless charging coil is in an off state;

when the sensor detects that the equipment to be charged is vertically placed on the wireless charging base, the first wireless charging coil in the wireless charging base is conducted, the second wireless charging coil is disconnected, and the first wireless charging coil charges the equipment to be charged through the wireless receiving coil;

When the sensor detects that the equipment to be charged is transversely placed on the wireless charging base, the second wireless charging coil in the wireless charging base is conducted, the first wireless charging coil is disconnected, and the second wireless charging coil charges the equipment to be charged through the wireless receiving coil.

4. A wireless charging base according to any one of claims 1 to 3, wherein the bracket comprises a recess in which the device to be charged is placed, and the distance from the sensor to the bottom of the recess is greater than the width of the device to be charged and less than the length of the device to be charged, and the length of the device to be charged is greater than the width of the device to be charged.

5. The wireless charging base of any one of claims 1-4, wherein the first wireless charging coil and the second wireless charging coil are each located at a different height of the cradle;

when the equipment to be charged is vertically placed on the wireless charging base, the first wireless charging coil is matched with the wireless receiving coil;

when the equipment to be charged is transversely placed on the wireless charging base, the second wireless charging coil is matched with the wireless receiving coil.

6. The wireless charging dock of any one of claims 1 to 5, wherein the sensor is any one of a proximity light sensor, an ultrasonic sensor, or a hall sensor.

7. The wireless charging base of any one of claims 1-6, further comprising a charging interface, a voltage stabilizing module and a rectifying module, wherein the voltage stabilizing module is electrically connected to the charging interface, the rectifying module is electrically connected to the voltage stabilizing module, and the first wireless charging coil and the second wireless charging coil are respectively electrically connected to the rectifying module.

8. The wireless charging base of claim 7, wherein the first wireless charging coil is connected to the rectification module through a first control switch, and the second wireless charging coil is connected to the rectification module through a second control switch;

the first control switch and the second control switch are electrically connected with the control module, and the control module controls the connection and disconnection of the first control switch and the second control switch.

9. A wireless charging system, comprising a device to be charged and the wireless charging base according to any one of claims 1 to 8, wherein a wireless receiving coil is included in the device to be charged, the device to be charged is placed on the wireless charging base, and the first wireless charging coil or the second wireless charging coil in the wireless charging base performs wireless charging on the device to be charged through the wireless receiving coil.