CN114696479A

CN114696479A - Wireless charging equipment

Info

Publication number: CN114696479A
Application number: CN202011615082.2A
Authority: CN
Inventors: 袁其云
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-07-01
Also published as: WO2022143277A1

Abstract

The application provides a wireless charging device to the realization charges to the high efficiency of various specification and dimension's intelligent glasses. Wireless battery charging outfit includes base, circuit board, first transmitting coil and second transmitting coil, wherein: the base is provided with a bearing surface for bearing the intelligent glasses, the bearing surface is provided with a first limiting block and a second limiting block for clamping the intelligent glasses, the first limiting block and the second limiting block are arranged at intervals along a first direction, and the first limiting block is assembled on the bearing surface in a sliding mode along the first direction; the circuit board is arranged in the base; the first emitting coil is arranged in the first limiting block and is electrically connected to the circuit board; the second transmitting coil is arranged in the second limiting block and electrically connected to the circuit board.

Description

Wireless charging equipment

Technical Field

The application relates to the technical field of wireless charging, in particular to wireless charging equipment.

Background

In the wireless charging technology, the electronic equipment and the wireless charging equipment are not required to be connected through a power line, the electronic equipment can be charged as long as the electronic equipment is placed on the wireless charging equipment, and the wireless charging equipment is convenient for users to use. In addition, a contact terminal for connecting a power line can be omitted from the electronic equipment, so that the safety, the waterproof performance and the dustproof performance of the electronic equipment are improved. Therefore, in recent years, wireless charging technology has come to be widely applied to charging devices for various types of electronic devices.

Use electronic equipment as intelligent glasses for example, because user's head type has the difference, in order to satisfy different users' the demand of wearing, the specification and size of intelligent glasses is also pluralism gradually, when wireless charging device is when the intelligent glasses for different models charge, the position of placing of intelligent glasses on wireless charging device also can be different, this relative distance that just leads to wireless charging device's transmitting antenna and intelligent glasses's receiving antenna also can change, and then can influence wireless charging efficiency. Therefore, the high-efficient demand of charging of the intelligent glasses of different models can not be considered in current wireless charging equipment. However, if different wireless charging devices are configured for different types of smart glasses, the development and maintenance difficulty of the wireless charging devices is increased, and the cost is also greatly increased.

Disclosure of Invention

The application provides a wireless charging equipment, and this wireless charging equipment can realize the high efficiency charge to various specification and dimension's intelligent glasses.

In a first aspect, the present application provides a wireless charging device that may be used to charge smart glasses. The wireless charging device may include a base, a circuit board, a first transmitting coil, and a second transmitting coil. The base is provided with a bearing surface used for bearing the intelligent glasses, a first limiting block and a second limiting block are arranged on the bearing surface, the first limiting block and the second limiting block are arranged at intervals along a first direction, and the intelligent glasses can be clamped between the first limiting block and the second limiting block. When the intelligent glasses are arranged, the first limiting block can be assembled on the bearing surface in a sliding mode in the first direction, so that the distance between the first limiting block and the second limiting block can be adjusted, and the distance between the first limiting block and the second limiting block is made to be adaptive to the width of the intelligent glasses. The first transmitting coil is arranged on the first limiting block, and the second transmitting coil is arranged on the second limiting block. The first transmitting coil and the second transmitting coil are respectively electrically connected with a circuit board arranged in the base.

In the above scheme, first transmitting coil can be along with the slip of first stopper and synchronous slip, also promptly, first transmitting coil's position also can be adjusted according to intelligent glasses's size to can guarantee to both keep efficient power transmission between first transmitting coil and the different intelligent glasses, make wireless battery charging outfit can match multiple specification and size's intelligent glasses, realize the high efficiency to various specification and size's intelligent glasses and charge.

In some possible embodiments, the second limiting block can also be assembled on the bearing surface in a sliding mode along the first direction, the sliding position of the first limiting block and the sliding position of the second limiting block can be adjusted together to achieve adjustment of the distance between the first limiting block and the second limiting block, and the design is favorable for increasing the adjusting range of the distance between the first limiting block and the second limiting block, so that the wireless charging equipment can be matched with intelligent glasses with more specifications and sizes.

In some possible embodiments, the wireless charging device may further include an elastic member, and the elastic member may be elastically limited between the first limiting block and the second limiting block. When the distance between the first limiting block and the second limiting block is minimum, the elastic piece is in an energy release state; when the first limiting block and the second limiting block respectively slide towards the direction away from the opposite side, so that the distance between the first limiting block and the second limiting block is increased, the elastic piece is in a stretched energy storage state, under the state, the elastic piece applies acting force to the direction of the first limiting block towards the second limiting block, and simultaneously applies acting force to the direction of the second limiting block towards the first limiting block, so that the first limiting block and the second limiting block can reliably clamp the intelligent glasses.

The elastic member may be any one of a spring, rubber, or plastic, which is not limited in this application.

In some other possible embodiments, the base may include a first sidewall and a second sidewall, the first sidewall and the second sidewall being disposed opposite to each other along the first direction. The wireless charging device may further include a first elastic member and a second elastic member, wherein the first elastic member is elastically limited between the first limiting block and the first sidewall, and the second elastic member is elastically limited between the second limiting block and the second sidewall. When the distance between the first limiting block and the second limiting block is minimum, the first elastic piece and the second elastic piece are respectively in an energy release state; when first stopper and second stopper slide towards the direction of keeping away from the other side respectively for when the interval between first stopper and the second stopper increases, first elastic component and second elastic component are in the energy storage state of compressed separately, and under this state, the effort of the direction towards the second stopper is applyed for first stopper to first elastic component, and the effort of the direction towards first stopper is applyed for the second stopper to the second elastic component, makes first stopper and second stopper can be reliably with intelligent glasses centre gripping.

The first elastic member and the second elastic member may be any one of a spring, rubber, or plastic, which is not limited in this application.

In some possible embodiments, the base is provided with a first slot and a second slot, and the first slot and the second slot are respectively arranged along a first direction. When the first limiting block is arranged, the first limiting block can be assembled in the first groove in a sliding mode, the first limiting block comprises a first limiting portion and a first extending portion, the first limiting portion protrudes out of the bearing surface, the first extending portion is connected with the first limiting portion, the first extending portion is arranged inside the base, at the moment, the first extending portion slides in the first groove, the first groove can provide a guiding effect for the first limiting block to slide, and the movement reliability of the first limiting block is improved. But second stopper slidable assembly and second fluting in, the second stopper includes spacing portion of second and second extension, and the spacing portion protrusion of second sets up in the loading end, and the second extension is connected with the spacing portion of second, and the second extension sets up inside the base, and at this moment, the second extension slides in the second fluting, and the second fluting can provide the guide effect for the slip of second stopper, improves the motion reliability of second stopper.

In some possible embodiments, the first transmitting coil may be disposed inside the base, and at least a part of projection of the first transmitting coil on the bearing surface is located on one side of the first limiting portion close to the second limiting portion, so that after the smart glasses are fixed between the first limiting block and the second limiting block, along a direction perpendicular to the bearing surface, the first transmitting coil is approximately arranged opposite to the receiving coil in the glasses leg on one side of the smart glasses, and thus a distance between the first transmitting coil and the receiving coil in a length direction of the wireless charging device can be reduced, and further charging efficiency can be improved.

When the first extension part is specifically arranged, one side of the first extension part, which is close to the second limiting block, can be provided with a first extension end, and the first transmitting coil can be positioned in the first extension end. Alternatively, the first transmitting coil may be disposed outside the first extending portion, for example, the first transmitting coil may be fixed on a side of the first extending portion close to the second limiting block.

Similarly, the second transmitting coil can be arranged inside the base, at least part of projection of the second transmitting coil on the bearing surface is positioned on one side of the second limiting part close to the first limiting part, so that after the intelligent glasses are fixed between the first limiting block and the second limiting block, along the direction perpendicular to the bearing surface, the second transmitting coil is approximately just opposite to the receiving coil in the other side glasses leg of the intelligent glasses, and therefore the distance between the second transmitting coil and the receiving coil in the length direction of the wireless charging equipment can be reduced, and further the charging efficiency can be improved.

When the first limiting block is arranged, a second extending end can be arranged on one side, close to the first limiting block, of the second extending portion, and the second transmitting coil can be located in the second extending end. Alternatively, the second transmitting coil may be disposed outside the second extending portion, for example, the second transmitting coil may be fixed on a side of the second extending portion close to the first stopper.

In some other possible embodiments, the first transmitting coil may be further disposed in the first limiting portion, and at this time, the wire led out from the circuit board may extend into the first limiting portion from the first extending portion to be connected with the first transmitting coil, and this manner of disposition is favorable to reducing the distance between the first transmitting coil and the receiving coil corresponding to the smart glasses in the direction perpendicular to the carrying surface, so that the charging efficiency may also be improved.

Similarly, the second transmitting coil can be arranged in the second limiting part, at the moment, the lead led out by the circuit board can extend into the second limiting part from the second extending part to be connected with the second transmitting coil, and the arrangement mode is favorable for reducing the distance between the second transmitting coil and the receiving coil corresponding to the intelligent glasses in the direction perpendicular to the bearing surface, so that the charging efficiency can be improved.

In some possible embodiments, the first limiting part may include a first portion and a second portion that are sequentially away from the bearing surface, wherein one surface of the first portion facing the second limiting block is a vertical surface, and one surface of the second portion facing the second limiting block is inclined toward a direction away from the second limiting block; the second limiting part can comprise a third part and a fourth part which are sequentially far away from the bearing surface, wherein one surface of the third part facing the first limiting block is a vertical surface, and one surface of the fourth part facing the first limiting block inclines towards the direction far away from the first limiting block. By adopting the arrangement, the two ends of the intelligent glasses and the inclined planes of the second part and the fourth part are abutted, the intelligent glasses can be clamped between the first part and the third part only by pressing the intelligent glasses downwards, so that a user does not need to manually adjust the positions of the first limiting block and the second limiting block, and the use convenience of the wireless charging equipment is improved.

In addition, the vertical surface of the first part can be provided with a first groove, and the first groove is arranged in a direction perpendicular to the bearing surface; the vertical surface of the second part can be provided with a second groove, the second groove can also be arranged in the direction vertical to the bearing surface, and the second groove is opposite to the first groove. When pressing intelligent glasses between first portion and the third part, first recess and second recess can be aimed at respectively at the both ends of intelligent glasses to can make the both ends of intelligent glasses card respectively and establish in first recess and second recess, avoid intelligent glasses to produce the removal along wireless battery charging outfit's width direction, improve the location effect of intelligent glasses on the base.

In some possible embodiments, the wireless charging device may further include a first magnet, a second magnet, a first hall sensor, and a second hall sensor, wherein the first magnet is disposed on the first limiting block, the first hall sensor is disposed on one side of the base, which is close to the first sidewall, and is electrically connected to the circuit board, and the first hall sensor may be configured to detect a magnetic field strength of the first magnet, so that a position of the first limiting block may be determined according to an output signal of the first hall sensor; the second magnet sets up in the second stopper, and second hall sensor sets up in the base and is close to one side of second lateral wall to the electricity connects in the circuit board, and second hall sensor can be used to detect the magnetic field intensity of second magnet, thereby can judge the position of second stopper according to second hall sensor's output signal.

In some possible embodiments, the wireless charging device may further include a first flexible circuit board and a second flexible circuit board. The first Hall sensor is arranged on the first flexible circuit board and is electrically connected with the circuit board through the first flexible circuit board; the second Hall sensor is arranged on the second flexible circuit board and is electrically connected with the circuit board through the second flexible circuit board.

For example, the number of the first hall sensors may be plural, and the plural first hall sensors may be disposed on the first flexible circuit board at equal intervals in the first direction. In the sliding process of the first limiting block along the first direction, the plurality of first Hall sensors can be used for detecting the first magnets of the first limiting block at different positions, and therefore the position detection precision of the first limiting block is improved.

Similarly, the number of the second hall sensors may also be plural, and the plural second hall sensors may be disposed at equal intervals on the second flexible circuit board along the first direction. In the process that the second limiting block slides along the first direction, the plurality of second Hall sensors can be used for detecting the second magnets of the second limiting block at different positions, and therefore the position detection precision of the second limiting block is improved.

In some possible embodiments, the circuit board may be provided with a main chip and a power supply circuit, and the power supply circuit is electrically connected to the first transmitting coil and the second transmitting coil respectively; the main chip is respectively electrically connected with the first Hall sensor, the second Hall sensor and the power supply circuit and is used for judging whether the intelligent glasses are in place or not according to the detection information of the first Hall sensor and the second Hall sensor; when the intelligent glasses are in place, the power supply circuit is controlled to supply power to the first transmitting coil and the second transmitting coil, and when the intelligent glasses are not in place, the power supply circuit is controlled to stop supplying power to the first transmitting coil and the second transmitting coil. That is to say, this wireless charging equipment can be according to the in-place condition automatic adjustment operating condition of intelligent glasses to be favorable to wireless charging equipment's low-power consumption operation and use reliability.

Drawings

Fig. 1 is a schematic structural diagram of a wireless charging system according to an embodiment of the present disclosure;

fig. 2 is a schematic circuit structure diagram of the wireless charging device in fig. 1;

FIG. 3 is a schematic diagram of a partial circuit structure of the electronic device in FIG. 1;

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

fig. 5 is a schematic partial structural diagram of a wireless charging device according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram illustrating a usage status of the wireless charging device shown in fig. 5;

fig. 7 is a schematic partial structure diagram of another wireless charging device according to an embodiment of the present disclosure;

fig. 8 is a schematic partial structure diagram of another wireless charging device according to an embodiment of the present disclosure;

fig. 9 is a schematic view of a usage state of the wireless charging device shown in fig. 8;

fig. 10 is a schematic partial structural diagram of another wireless charging device according to an embodiment of the present disclosure;

fig. 11 is a schematic partial structural diagram of another wireless charging device according to an embodiment of the present disclosure;

fig. 12 is a schematic view of a usage state of the wireless charging device shown in fig. 11;

fig. 13 is a schematic partial structure diagram of another wireless charging device according to an embodiment of the present disclosure;

fig. 14 is a schematic structural diagram of a control circuit of a wireless charging device according to an embodiment of the present application.

Reference numerals:

100-a wireless charging device; 200-electronic devices, smart glasses; 101-a power supply circuit; 102-a transmitting coil;

103-a direct current power supply; 1011-DC/AC conversion module; 1012-first matching circuit; 201-a power receiving circuit;

202. 202a, 202 b-a receiving coil; 203-a battery; 2011-second matching circuit; 2012-AC/DC conversion module;

210-a spectacle body; 220-temple; 110-a base; 120-a connector; 130-a cable; 121-a body;

122-a connector interface; 10-a circuit board; 11-a power supply module; 102 a-a first transmit coil; 102 b-a second transmitting coil;

20 a-a first stopper; 20 b-a second stopper; 111-a carrying surface; 220 a-left side temple; 220 b-right side temple;

112-a first guide rail; 113-a first slot; 21 a-a first limiting part; 22 a-a first extension; 23 a-linker arm;

24 a-a receiving groove; 25 a-positioning projections; 221 a-first protruding end; 114-a second guide rail; 115-second grooving;

21 b-a second stop; 22 b-a second extension; 221 b-second protruding end 221 b; 211 a-first portion;

212 a-a second portion; 213a, 213 b-inclined plane; 211 b-a third portion; 212 b-fourth portion; 214 a-first groove;

214 b-a second groove; 30. 30a, 30 b-an elastic member; 40a, 40 b-connecting rods; 51-a first magnet; 52-a second magnet;

61-a first hall sensor; 62-a second hall sensor; 116-a first sidewall; 117-second side wall;

71-a first flexible circuit board; 72-a second flexible circuit board; 12-a master chip; 13-an and gate; 14-or gate; 15-an analog switch;

16-time delay switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. First, an application scenario of the wireless charging device provided in the embodiment of the present application is introduced.

With the development of scientific technology, the application of wireless charging technology to consumer electronics products is more and more extensive. Compared with the traditional cable plug-in type electric energy transmission technology, the wireless charging technology is safer, more convenient and more reliable in the process of wireless electric energy transmission because the power supply and the load are not connected by the cable. The wireless charging technology is used for realizing wireless power transmission, and the wireless charging technology comprises an electromagnetic radiation type, an electromagnetic induction type, an electromagnetic resonance type, an electric field coupling type and the like. Based on the consideration of efficiency, safety and other aspects, the wireless charging products commonly used in the current market usually adopt an electromagnetic induction type wireless power transmission mode.

Referring to fig. 1, fig. 1 is a wireless charging system formed by an electromagnetic induction type wireless charging device and an electronic device. In this wireless charging system, the wireless charging apparatus 100 functions as a power supply apparatus, and the electronic apparatus 200 functions as a power receiving apparatus. The wireless charging device 100 is connectable to a power source for transmitting energy of the power source to the electronic device 200 to be charged in an electromagnetic wave manner; the electronic device 200 to be charged is in contact with the wireless charging device 100, and is configured to receive the electromagnetic wave transmitted by the wireless charging device 100 and charge itself by energy carried by the electromagnetic wave. The wireless charging device 100 includes but is not limited to a charging device such as a charging box or a charging tablet, and the electronic device 200 includes but is not limited to a wearable device with small power such as smart glasses, a smart bracelet, a watch, a ring, or an earphone. The wireless charging device 100 and the electronic device 200 shown in fig. 1 are respectively illustrated by taking a charging tablet and smart glasses as examples, where the smart glasses may specifically be Augmented Reality (AR) glasses or Virtual Reality (VR) glasses, and the like.

Referring to fig. 2, fig. 2 is a schematic circuit structure diagram of the wireless charging device in fig. 1. The wireless charging apparatus 100 includes a power supply circuit 101 and a transmitting coil 102, wherein the power supply circuit 101 may include a direct current/alternating current (DC/AC) conversion module 1011 and a first matching circuit 1012. When the wireless charging apparatus 100 is used to charge the power receiving electronic apparatus 200, the DC/AC conversion module 1011 is connected to the power supply 103 via the adapter, or connected to a battery inside the wireless charging apparatus 100, for converting a DC voltage signal into an AC voltage signal; the ac voltage signal is transmitted to the transmitting coil 102 through the first matching circuit 1012, and finally the transmitting coil 102 converts the electric energy of the ac voltage signal into electromagnetic waves to be transmitted. The first matching circuit 1012 can adjust a resonant frequency point of the power supply circuit 101 to improve the electromagnetic wave transmission efficiency of the transmitting coil 102.

Referring to fig. 3, fig. 3 is a schematic diagram of a partial circuit structure of the electronic device in fig. 1. The circuit structure of the electronic device includes a power receiving circuit 201, a receiving coil 202, and a battery 203, where the power receiving circuit 201 may include a second matching circuit 2011 and an alternating current/direct current (AC/DC) conversion module 2012. When the electronic device 200 is charged, the receiving coil 202 may convert the received electromagnetic waves into an alternating current voltage signal, the alternating current voltage signal is transmitted to the AC/DC conversion module 2012 through the second matching circuit 2011, and finally, the AC/DC conversion module 2012 converts the alternating current voltage signal into a direct current voltage signal and transmits the direct current voltage signal to the battery 203 for storage, and the battery 203 may supply power to a load of the electronic device 200 when the electronic device 200 is normally used. The second matching circuit 2011 can be used for adjusting a resonant frequency point of the power receiving circuit 201, so as to improve the electromagnetic wave receiving efficiency of the receiving coil 202.

Taking the electronic device 200 as an example of smart glasses, it should be noted that the reference numerals of the smart glasses are the same as those of the electronic device 200. Referring to fig. 1, 2 and 3 together, the smart glasses 200 include a glasses main body 210 and two glasses legs 220, wherein the glasses main body 210 is used for carrying an AR or VR display component added to the smart glasses 200 relative to ordinary glasses, so that the smart glasses 200 can be applied to different human-computer interaction scenes; the two temples 220 are hinged to two sides of the glasses main body 210 respectively, when the ends of the two temples 220 rotate towards the direction far away from the glasses main body 210 respectively, the smart glasses 200 can be opened, and the smart glasses can be worn and used by a user conveniently in the state; when the ends of the two temples 220 are respectively rotated toward a direction approaching the glasses main body 210, the two temples 220 may be cross-folded at one side of the glasses main body 210, in which state it may be convenient to store the smart glasses 200 or charge the smart glasses 200.

The receiver coil 202 of the smart glasses 200 is generally disposed within the temple 220, for example, in the embodiment shown in fig. 1, the receiver coil 202 may be specifically disposed near an end of the temple 220 hinged to the glasses body 210. When specifically designed, the receiving coil 202 may be disposed within one of the temples 220, such as a left side temple or a right side temple; or, the receiving coil 202 may also be disposed in the two temples 220, so that on one hand, the wireless charging efficiency may be improved, and on the other hand, the quality balance of the temples 220 on the left and right sides may be ensured, thereby improving the wearing comfort of the user. In the smart glasses 200 in which the receiving coils 202 are provided to the left and right temples 220, the transmitting coils 102 corresponding to the two receiving coils 202 may be provided in the wireless charging device 100, and wireless power transmission may be performed between each transmitting coil 102 and the corresponding receiving coil 202.

The wireless charging efficiency is sensitive to the relative position of the transmitting coil 102 and the receiving coil 202, and the charging efficiency can be kept within a reasonable interval only when the distance between the transmitting coil 102 and the receiving coil 202 meets a certain condition. For example, if the length direction of the wireless charging device 100 is defined as x axis, the width direction is defined as y axis, and the thickness direction is defined as z axis, the distance between the transmitting coil 102 and the corresponding receiving coil 202 in the x axis direction should be within ± 10mm, for example; in the y-axis direction, the distance between the transmitting coil 102 and the corresponding receiving coil 202 should be within a range of ± 5 mm; in the z-axis direction, the distance between the transmitting coil 102 and the corresponding receiving coil 202 should be in the range of 3mm to 5 mm.

Since the head shapes of the users may be different, in order to satisfy wearing comfort requirements of different users, the specification and size of the smart glasses 200 are also gradually diversified. For example, smart glasses 200 having glasses bodies 210 of different widths, temples 220 of different lengths may match users of different head styles. It can be understood that, the size of the smart glasses 200 is different, and the relative position of the receiving coils 202 inside the smart glasses 200 is also different, and particularly, for the smart glasses 200 in which the receiving coils 202 are respectively disposed on the left and right side temples 220, the distance between the receiving coils 202 on the two sides may significantly vary with the width of the glasses main body 210.

In the prior art, because the position of the transmitting coil 102 in the wireless charging device 100 is relatively fixed, when the wireless charging device 100 charges the smart glasses 200 of different models, the placement positions and the coverage areas of the smart glasses 200 on the wireless charging device 100 may be different, which may cause the relative distance between the transmitting coil 102 and the receiving coil 202 to be changed, and further may affect the charging efficiency. That is, the existing wireless charging device 100 cannot take into account the charging efficiency of the smart glasses 200 of different models.

To the above problem, the current solution is to configure the assorted wireless charging equipment to the intelligent glasses of different models, and although this kind of scheme can guarantee charging efficiency, this kind of scheme has also increased wireless charging equipment's development and maintenance degree of difficulty to still can lead to the cost to promote by a wide margin. Based on this, this application provides a wireless battery charging outfit, and this wireless battery charging outfit can be according to the position of intelligent glasses's size adjustment transmitting coil to make wireless battery charging outfit can match multiple specification and dimension's intelligent glasses, realize the high efficiency to various specification and dimension's intelligent glasses and charge. The matching here can be understood that the distance between the transmitting coil of the wireless charging device and the receiving coil of the smart glasses satisfies the aforementioned range of the size in the xyz triaxial direction. The following describes a wireless charging device provided in an embodiment of the present application in detail with reference to the accompanying drawings.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a wireless charging device according to an embodiment of the present application. The wireless charging device 100 may be a charging box or a charging tablet, which is not limited in this application. The embodiment shown in fig. 4 is described by taking a wireless charging device as a charging flat plate as an example.

With continued reference to fig. 4, the wireless charging apparatus 100 includes a base 110, and the base 110 may be provided with an interface (not shown), the interface may be electrically connected to the connector 120 through a cable 130, and the connector 120 may be connected to a power source to transmit power to the base 110. The base 110 may be used to carry an electronic device to be charged, and is used to implement electromagnetic coupling between the wireless charging device 100 and the electronic device, so as to implement a charging function of the wireless charging device 100 on the electronic device.

In the embodiment of the present application, the connector 120 may be, but is not limited to, a Micro USB connector, a Type-a connector, a Type-C connector, or the like. The connector 120 includes a body 121 and a connector interface 122, and the connector interface 122 may be partially or entirely disposed within the body 121. For example, in the embodiment shown in fig. 4, the connector interface 122 is partially disposed within the body 121. In addition, the connector interface 122 may be directly plugged into the power interface, or connected to the power interface through an adapter, so as to convert the ac voltage signal of the utility grid into a dc voltage signal and transmit the dc voltage signal to the base 110.

Referring to fig. 5, fig. 5 is a schematic partial structural diagram of a wireless charging device according to an embodiment of the present disclosure. The wireless charging device 100 provided by the embodiment of the present application, as a power supply device, may further include the circuit board 10 and the transmitting coil 102. The circuit board 10 is disposed inside the base 110, the circuit board 10 is provided with a power module 11 and a power supply circuit (not shown in the figure), the power module 11 is connected to a power source sequentially through a cable and a connector, a DC/AC conversion module of the power supply circuit may be integrated on the power module, or may be independently disposed and then connected to the power module 11, and a first matching circuit of the power supply circuit is connected to the transmitting coil 102, so that a DC voltage signal input to the base 110 is converted into an AC voltage signal and then transmitted to the transmitting coil 102. The first matching circuit and the transmitting coil 102 may be connected by a wire or a flexible circuit board, which is not limited in this application. It should be noted that fig. 5 and the related drawings below only schematically show some components included in the wireless charging device 100, and the actual shape, the actual size, the actual position, and the actual configuration of these components are not limited by fig. 5 and the following drawings.

In some possible embodiments, the wireless charging device 100 may further include a battery (not shown), which may also be connected to the power source via a cable and a connector in order to receive and store the power transmitted by the connector into the cradle 110. The power module 11 may be connected to a battery, in addition to being directly connected to a power source, so that the battery can supply power to the transmitting coil 102. Like this, when wireless charging device 100 is not connected with the power, utilize the electric energy that the battery stored to charge for intelligent glasses equally, that is to say, wireless charging device 100 that this application embodiment provided can also regard as the treasured that charges to can widen wireless charging device's application scene, improve wireless charging device 100's convenience of use. It should be understood that, in the case that the wireless charging device 100 is connected to a power supply, when the smart glasses are charged, the electric energy transmitted into the base 110 by the connector and the cable may not pass through the battery, but directly pass through the power supply circuit to be processed and then transmitted to the transmitting coil 102.

In this embodiment of the application, the number of the transmitting coils 102 may be two, the two transmitting coils 102 are respectively disposed corresponding to two receiving coils in a left side temple and a right side temple of the smart glasses, and wireless power transmission is performed between each transmitting coil 102 and the corresponding receiving coil in an electromagnetic induction manner. For convenience of description, the two transmission coils 102 will be hereinafter referred to as a first transmission coil 102a and a second transmission coil 102b, respectively.

With reference to fig. 5, the base 110 is further provided with two limiting blocks, namely a first limiting block 20a and a second limiting block 20b, corresponding to the two transmitting coils 102, respectively, in which in specific implementation, the first transmitting coil 102a may be disposed on the first limiting block 20a, and the second transmitting coil 102b may be disposed on the second limiting block 20 b. The first stopper 20a and the second stopper 20b are disposed on a surface of the base 110 for supporting the electronic device, i.e., the supporting surface 111 of the base 110. In some embodiments, the first stopper 20a and the second stopper 20b may be arranged on the bearing surface 111 along the first direction. The first direction may be an x-axis direction or a y-axis direction, where the length direction of the wireless charging device is an x-axis, the width direction is a y-axis, and the thickness direction is a z-axis. The embodiment shown in fig. 5 is described with the first direction as the x-axis direction as an example.

Fig. 6 is a schematic diagram of a usage status of the wireless charging device shown in fig. 5. Referring to fig. 5 and fig. 6 together, when the wireless charging device 100 is used to charge the smart glasses 200, the smart glasses 200 are clamped between the first limiting block 20a and the second limiting block 20b, two ends of the smart glasses 200 in the width direction (i.e. the arrangement direction of the two

glasses legs

220a and 220b on the glasses main body 210) are respectively abutted against the first limiting block 20a and the second limiting block 20b, that is, on the bearing surface 111 of the base 110, the width of the smart glasses 200 is set in the first direction.

After the smart glasses 200 are fixed between the first limiting block 20a and the second limiting block 20b, the end of the left side arm 220a hinged to the glasses main body 210 is close to the first limiting block 20a, and the end of the right side arm 220b hinged to the glasses main body 210 is close to the second limiting block 20b, so that the first transmitting coil 102a can be induced to the receiving coil 202a in the left side arm 220a and transmit electric energy, and the second transmitting coil 102b is induced to the receiving coil 202b in the right side arm 220b and transmit electric energy, thereby charging the smart glasses 200. It should be noted that the terms of the orientations such as "left" and "right" used in the embodiments of the present application are mainly explained according to the display orientation of the smart glasses in fig. 6, and do not form a limitation on the orientation of the smart glasses in the practical application scene.

In some embodiments, the bearing surface 111 of the base 110 is provided with a first guide rail 112 arranged along a first direction, and the first stopper 20a is slidably assembled on the first guide rail 112, so that the sliding position of the first stopper 20a on the first guide rail 112 can be adjusted according to the width of the smart glasses 200, and further the distance between the first stopper 20a and the second stopper 20b can be adjusted, so that the distance between the first stopper 20a and the second stopper 20b is adapted to the width of the smart glasses 200. Because the first transmitting coil 102a is disposed on the first limiting block 20a, the first limiting block 20a can drive the first transmitting coil 102a to slide synchronously when sliding, that is, the position of the first transmitting coil 102a can also be adjusted according to the specification and size of the smart glasses 200. In this way, when the smart glasses 200 with different sizes are charged, even if the placement positions and the coverage areas of the smart glasses 200 on the base 110 are different, since the position of the first transmitting coil 102a can be adjusted according to the smart glasses 200, the relative distances between the first transmitting coil 102a and the receiving coil 202a in the left side temple 220a of the smart glasses 200 are substantially the same, so that efficient power transmission can be ensured between the first transmitting coil 102a and different smart glasses 200, and the wireless charging device 100 can be matched with the smart glasses 200 with various specifications and sizes.

When the first transmitting coil 102a slides along with the first stopper 20a, the relative distance between the first transmitting coil and the circuit board 10 changes. In order to facilitate the connection between the first emitting coil 102a and the first matching circuit on the circuit board 10, in some embodiments, the supporting surface 111 of the base 110 is provided with a first slot 113 disposed along the first direction, and the first stopper 20a may include a first stopper portion 21a and a first extending portion 22a, wherein the first stopper portion 21a protrudes from the supporting surface 111 of the base 110, and the first extending portion 22a is disposed inside the base 110 through the first slot 113. The first transmitting coil 102a may be disposed in the first extending portion 22a, and a lead wire led out from the first matching circuit may extend into the first extending portion 22a to be connected to the first transmitting coil 102 a. When the first stopper 20a slides along the first direction, the first extending portion 22a slides in the first slot 113, and at this time, the first slot 113 can be formed as a first guide rail, so as to provide a guiding function for the sliding of the first stopper 20a, and improve the motion reliability of the first stopper 20 a.

In some possible embodiments, the first stopper 20a may further include a connecting arm 23a, the first stopper 21a has a receiving groove 24a formed on a side surface perpendicular to the y-axis direction, the connecting arm 23a is rotatably connected to the first stopper 21a, and the connecting arm 23a is both received in the receiving groove 24a and can extend from the receiving groove 24a in a direction away from the first stopper 21a during rotation. The carrying surface 111 of the base 110 may be provided with a plurality of positioning protrusions 25a arranged along a first direction. In the process that the first limiting block 20a slides along the first direction, the connecting arm 23a can be accommodated in the accommodating groove 24 a; when the first stopper 20a slides to a position where the distance between the first stopper and the second stopper 20b is adapted to the width of the smart glasses, the connecting arm 23a can be extended from the receiving groove 24a and then clamped between the two adjacent positioning protrusions 25a, so as to fix the first stopper 20a at the position, and thus the structural reliability of the wireless charging device 100 can be improved.

In some other possible embodiments, the first extending portion may be provided with an arc-shaped protrusion on a side surface perpendicular to the y-axis direction, and the inner wall of the first slot may be provided with a plurality of positioning grooves arranged along the first direction. In the process that the first limiting block slides along the first direction, the arc-shaped protrusions can be assembled in the positioning grooves, so that the first limiting block can be fixed at different positions. When the position of the first limiting block needs to be changed, a user can push the first limiting block to slide the arc-shaped protrusion out of the current positioning groove. It can be understood that in some other possible embodiments, the side of first extension in perpendicular y axle direction also can set up the constant head tank, and at this moment, first grooved inner wall then can set up a plurality of arc-shaped protrusion of arranging along the first direction, adopts this kind of setting, can utilize the cooperation between arc-shaped protrusion and the constant head tank to realize the fixed of first stopper in different positions equally.

With continued reference to fig. 5 and fig. 6, in the embodiment of the present application, the first transmitting coil 102a may be located inside the base 110, and at least a part of a projection of the first transmitting coil 102a on the bearing surface 111 is located at a side of the first limiting part 21a close to the second limiting block 20b, so that after the smart glasses 200 are fixed between the first limiting block 20a and the second limiting block 20b, the first transmitting coil 102a and the receiving coil 202a in the left side temple 220a are approximately arranged opposite to each other along the z-axis direction, so as to reduce a distance between the first transmitting coil 102a and the receiving coil 202a in the x-axis direction, and further improve the charging efficiency. In one embodiment, the side of the first extending portion 22a adjacent to the second stopper 20b along the first direction has a first protruding end 221a, and the first protruding end 221a is disposed beyond the first stopper portion 21 a. The first transmission coil 102a may be specifically positioned within the first protruding end 221 a. In another embodiment, the first transmitting coil 102a may also be disposed outside the first extension portion 22a, for example, the first transmitting coil 102a may be fixed on a side of the first extension portion 22a close to the second stopper 20 b.

Fig. 7 is a partial schematic structural diagram of another wireless charging device according to an embodiment of the present application. Referring to fig. 7, in some embodiments, the first transmitting coil 102a may be further disposed in the first position-limiting portion 21a, and in this case, the lead wire led out from the first matching circuit may extend into the first position-limiting portion 21a from the first extending portion 22a to be connected to the first transmitting coil 102a, which is advantageous to reduce the distance between the first transmitting coil 102a and the receiving coil 202a in the z-axis direction, so as to improve the charging efficiency.

In addition, the width of the first extending portion 22a in the y-axis direction may be smaller than the width of the first limiting portion 21a in the y-axis direction, so that the width of the first slot 113 may be correspondingly reduced, thereby facilitating to improve the appearance quality of the wireless charging device 100.

Referring to fig. 8 and 9 together, fig. 8 is a partial structure schematic diagram of another wireless charging device according to an embodiment of the present application, and fig. 9 is a schematic usage state diagram of the wireless charging device shown in fig. 8. In this embodiment, the bearing surface 111 of the base 110 may further include a second guide rail 114 disposed along the first direction, the second limiting block 20b is slidably assembled on the second guide rail 114, and at this time, the sliding positions of the first limiting block 20a and the second limiting block 20b may be adjusted together to adjust the distance therebetween, such a design is beneficial to increase the adjustment range of the distance between the first limiting block 20a and the second limiting block 20b, so that the wireless charging device 100 can be matched with the smart glasses 200 with more specifications.

Similarly, in order to facilitate the connection between the second transmitting coil 102b and the first matching circuit on the circuit board 10, in some embodiments, the bearing surface 111 of the base 110 is provided with a second slot 115 disposed along the first direction, and the second stopper 20b may include a second stopper portion 21b protruding from the bearing surface 111 of the base 110 and a second extending portion 22b disposed inside the base 110 through the second slot 115. The second transmitting coil 102b may be disposed in the second extension portion 22b, and a lead wire led out from the first matching circuit may extend into the second extension portion 22b to be connected to the second transmitting coil 102 b. In this embodiment, when the second stopper 20b slides along the first direction, the second extending portion 22b slides in the second slot 115, and at this time, the second slot 115 may be formed as the second guide rail 114, so as to provide a guiding function for the sliding of the second stopper 20b, and improve the motion reliability of the second stopper 20 b.

In some possible embodiments, the second stopper 20b may also be provided with a connecting arm rotatably connected thereto, and accordingly, the bearing surface 111 of the base 110 may be provided with a positioning protrusion corresponding to the connecting arm, and the positioning of the second stopper may be achieved through the cooperation between the connecting arm and the positioning protrusion corresponding thereto. In some other possible embodiments, the side surface of the second extending portion in the direction perpendicular to the y-axis may be provided with an arc-shaped protrusion, and the inner wall of the second slot may be provided with a plurality of positioning grooves arranged along the first direction; or, the side of second extension in perpendicular y axle direction can be provided with the constant head tank, and the grooved inner wall of second can set up a plurality of arcs of arranging along the first direction protruding, like this, utilizes the cooperation between arc arch and the constant head tank also to realize the second stopper in the fixed of different positions.

In this embodiment of the application, the second extending portion 22b may be located inside the base 110, and at least a part of a projection of the second transmitting coil 102b on the bearing surface 111 is located on one side of the second limiting portion 21b close to the first limiting block 20a, so that after the smart glasses 200 are fixed between the first limiting block 20a and the second limiting block 20b, along the z-axis direction, the second transmitting coil 102b and the receiving coil 202b in the right side temple 220b are approximately arranged in a right-to-right manner, so that a distance between the second transmitting coil 102b and the receiving coil 202b in the x-axis direction can be reduced, and further, the wireless charging efficiency can be improved. In one embodiment, the second extending portion 22b has a second protruding end 221b on a side thereof adjacent to the first stopper 20a along the first direction, and the second protruding end 221b is disposed beyond the second stopper portion 21 b. The second transmitting coil 102b may be particularly located within the second protruding end 221 b. In another embodiment, the second transmitting coil 102b may also be disposed outside the second extension portion 22b, for example, the second transmitting coil 102b may be fixed on a side of the second extension portion 22b near the first stopper 20 a.

Fig. 10 is a partial schematic structural diagram of another wireless charging device according to an embodiment of the present application. Referring to fig. 10, in some embodiments, the second transmitting coil 102b may also be disposed in the second position-limiting portion 21b, and in this case, the lead wire led out from the first matching circuit may extend into the second position-limiting portion 21b from the second extending portion 22b to be connected to the second transmitting coil 102b, which is advantageous to reduce the distance between the second transmitting coil 102b and the receiving coil 202b in the z-axis direction, so as to improve the charging efficiency.

For example, the width of the second extending portion 22b in the y-axis direction may be smaller than the width of the second limiting portion 21b in the y-axis direction, so that the width of the second slot 115 may be correspondingly reduced, which is beneficial to improving the appearance quality of the wireless charging device.

With continued reference to fig. 8 and 9, in the embodiment of the present application, the first limiting portion 21a includes a first portion 211a and a second portion 212a that are sequentially away from the bearing surface, and when the first portion 211a is specifically configured, the first portion 211a is substantially a rectangular parallelepiped structure, and a surface of the first portion 211a facing the second limiting block 20b is a vertical surface perpendicular to the bearing surface 111; the second portion 212a is substantially a trapezoid, and a surface of the second portion 212a facing the second stopper 20b is an inclined surface 213a forming an angle with the bearing surface 111, and the inclined surface 213a inclines away from the second stopper 20b along the positive direction of the z-axis. Similarly, the second limiting block 21b includes a third portion 211b and a fourth portion 212b which are sequentially far away from the bearing surface 111, and when the second limiting block is specifically arranged, the third portion 211b is approximately in a rectangular parallelepiped structure, and one surface of the third portion 211b facing the first limiting block 20a is a vertical surface perpendicular to the bearing surface 111; the fourth portion 212b is substantially a trapezoid structure, one surface of the fourth portion 212b facing the first stopper 20a is an inclined surface 213b forming an included angle with the carrying surface 111, and the inclined surface 213b inclines in a direction away from the first stopper 20a along the positive direction of the z-axis.

In the above solution, when charging the smart glasses 200, the user may first place the smart glasses 200 between the second portion 212a and the fourth portion 212b, based on the inclined surface characteristics of the second portion 212a and the fourth portion 212b, two ends of the smart glasses 200 may respectively contact with the inclined surface 213a of the second portion 212a and the inclined surface 213b of the fourth portion 212b, at this time, the user presses the smart glasses 200 downward (i.e. in the negative z-axis direction), the left end of the smart glasses 200 may apply an abutting force to the second portion 212a in the negative x-axis direction, and at the same time, the right end of the smart glasses 200 also applies a abutting force to the fourth portion 212b in the positive z-axis direction, under the action of the two abutting forces, the first stopper 20a and the second stopper 20b respectively slide in the directions relatively far away from each other, until the distance between the first stopper 20a and the second stopper 20b increases to be equal to the width of the smart glasses 200, at this time, the smart glasses 200 are pressed into contact with the carrying surface 111, and the smart glasses 200 are sandwiched between the first part 211a and the third part 211 b. Based on the vertical surface characteristics of the first portion 211a and the third portion 211b, the acting forces applied to the smart glasses 200 by the first portion 211a and the third portion 211b are all in the x-axis direction, and since there is no component force in the z-axis direction, the smart glasses 200 can be more firmly fixed between the first stopper 20a and the second stopper 20 b.

In addition, the vertical surface of the first portion 211a may be further opened with a first groove 214a disposed along the z-axis direction, and correspondingly, the vertical surface of the third portion 211b may be opened with a second groove 214b disposed along the z-axis direction, and the first groove 214a is opposite to the second groove 214 b. When the smart glasses 200 are pressed between the first portion 211a and the third portion 211b, the two ends of the smart glasses 200 can be aligned to the first groove 214a and the second groove 214b, respectively, so that the two ends of the smart glasses 200 can be clamped in the first groove 214a and the second groove 214b, respectively, the smart glasses 200 are prevented from moving in the y direction, and the positioning effect of the smart glasses 200 on the base 110 is improved.

With continued reference to fig. 8 and 9, the wireless charging device 100 may further include an elastic member 30 connected between the first stopper 20a and the second stopper 20 b. When the first stopper 20a is located at an end of the first guide rail 112 close to the second guide rail 114, and the second stopper 20b is located at an end of the second guide rail 114 close to the first guide rail 112, the elastic member 30 is in a release state, and at this time, a distance between the first stopper 20a and the second stopper 20b is minimum, defining that a position where the first stopper 20a is located is a first initial position, a position where the second stopper 20b is located is a second initial position, and a minimum distance between the first stopper 20a and the second stopper 20b is a first distance; when the first stopper 20a and the second stopper 20b slide from their initial positions toward a direction away from each other, so that the distance between the first stopper 20a and the second stopper 20b is greater than the first distance, the elastic member 30 is in a stretched energy storage state, and in this state, the elastic member 30 can apply an elastic force to the first stopper 20a x in the positive axial direction and an elastic force to the second stopper 20b x in the negative axial direction, so that the first stopper 20a and the second stopper 20b can reliably clamp the smart glasses 200.

The type of the elastic member 30 is not limited to the spring shown in fig. 7 and 8, and in other embodiments, the elastic member 30 may be made of rubber, plastic, etc.

It should be noted that the energy releasing state of the elastic element 30 is relative to the energy storing state, and in the above embodiment, the elastic element 30 can be understood as the energy storing state when being stretched by an external force, and can be understood as the energy releasing state when the external force is removed.

The first distance may be designed according to the specification size of the smart glasses 200. In a specific embodiment, the first distance is not smaller than the width of the smart glasses 200 with the smallest size, and by adopting the design, the first limiting block 20a and the second limiting block 20b can achieve the clamping effect on the smart glasses 200 with various specifications, so that the smart glasses 200 can be positioned on the base 110, the phenomenon that the smart glasses 200 shift in the charging process is avoided, and the charging efficiency of the smart glasses 200 is improved.

In some embodiments, the elastic member 30 may be disposed inside the base 110 and connected between the first extension 22a and the second extension 22 b. The wireless charging device 100 may further include a connection rod 40a connected between the elastic member 30 and the first extension 22a to reduce the difficulty of connecting the elastic member 30 and the first extension 22 a. Similarly, the wireless charging device 100 may further include a connecting rod 40b connected between the elastic member 30 and the second extension portion 22b to reduce the difficulty of connecting the elastic member 30 and the second extension portion 22 b. It is understood that in other embodiments, the elastic element 30 can be disposed outside the base 110, and in this case, the elastic element 30 can be connected between the first position-limiting portion 21a and the second position-limiting portion 21 b.

It should be understood that when the first stopper 20a is slidably assembled on the base 110 and the second stopper 20b is fixed on the base 110, an elastic member may also be disposed between the first stopper 20a and the second stopper 20b to fix the smart glasses 200, and the manner of disposing the elastic member may refer to the foregoing description, which is not described herein again.

Referring to fig. 11 and 12 together, fig. 11 is a partial schematic structural diagram of another wireless charging device according to an embodiment of the present application, and fig. 12 is a schematic usage state diagram of the wireless charging device shown in fig. 11. In this embodiment, the wireless charging device 100 may include two elastic members 30, which are a first elastic member 30a and a second elastic member 30b, respectively, wherein the first elastic member 30a is connected between the first extension portion 22a and the first sidewall 116 of the base 110, and the second elastic member 30b is connected between the second extension portion 22b and the second sidewall 117 of the base 110. When the first stopper 20a is located at a first initial position and the second stopper 20b is located at a second initial position, the first elastic member 30a and the second elastic member 30b are respectively in an energy release state, and at this time, the distance between the first stopper 20a and the second stopper 20b is the minimum; when the first stopper 20a and the second stopper 20b slide away from each other, the first elastic member 30a and the second elastic member 30b are in a compressed energy storage state, in which the first elastic member 30a can apply an elastic force to the first stopper 20a x in the positive axis direction, and the second elastic member 30b can apply an elastic force to the second stopper 20b x in the negative axis direction, so that the first stopper 20a and the second stopper 20b can reliably clamp the smart glasses 200.

Fig. 13 is a partial schematic structural diagram of another wireless charging device according to an embodiment of the present application. In the embodiment of the present application, the wireless charging device 100 may further include a first magnet 51, a second magnet 52, a first hall sensor 61, and a second hall sensor 62. The first magnet 51 is disposed on the first stopper 20a, and for example, the first magnet 51 may be specifically disposed on the first extending portion 22a of the first stopper 20 a; the first hall sensor 61 is disposed on one side of the base 110 close to the first sidewall 116, and is electrically connected to the power module 11 on the circuit board 10, and the first hall sensor 61 can be used to detect the magnetic field strength of the first magnet 51. The second magnet 52 is disposed on the second stopper 20b, and for example, the second magnet 52 may be disposed on the second extending portion 22b of the second stopper 20 b; the second hall sensor 62 is disposed on one side of the base 110 close to the second sidewall 117, and is electrically connected to the power module 11 on the circuit board 10, and the second hall sensor 62 is used for detecting the magnetic field strength of the second magnet 52.

In some embodiments, the wireless charging device 100 may further include a first flexible circuit board 71 and a second flexible circuit board 72 disposed in the base 110, and the first hall sensor 61 may be particularly disposed on the first flexible circuit board 71 and electrically connected to the circuit board 10 through the first flexible circuit board 71; accordingly, the second hall sensor 62 may be disposed on the second flexible circuit board 72 and electrically connected with the circuit board 10 through the second flexible circuit board 72.

When the first limiting block 20a is located at the first initial position, the first hall sensor 61 is relatively far away from the first magnet 51, the magnetic field strength of the first magnet 51 sensed by the first hall sensor 61 is relatively weak, and at this time, the first hall sensor 61 outputs a low level; after the first stopper 20a slides in the x-axis negative direction from the first initial position, the distance between the first hall sensor 61 and the first magnet 51 is reduced, the magnetic field intensity of the first magnet 51 sensed by the first hall sensor 61 is increased, and at this time, the first hall sensor 61 outputs a high level.

Similarly, when the second limiting block 20b is at the second initial position, the magnetic field strength of the second magnet 52 sensed by the second hall sensor 62 is relatively weak, and at this time, the second hall sensor 62 outputs a low level; after the second limiting block 20b slides in the positive direction of the x-axis from the second initial position, the distance between the second hall sensor 62 and the second magnet 52 is reduced, the magnetic field strength of the second magnet 52 sensed by the second hall sensor 62 is increased, and at this time, the second hall sensor 62 outputs a high level.

For example, the number of the first hall sensors 61 may be multiple, for example, two, three or more, and fig. 11 illustrates three first hall sensors 61 as an example. In a specific arrangement, the plurality of first hall sensors 61 may be disposed at equal intervals on the first flexible circuit board 71 in the first direction. In the process that the first stopper 20a slides from the first initial position to the other end of the first guide rail 112, the plurality of first hall sensors 61 can be used for detecting the first magnet 51 of the first stopper 20a at different positions, so that it can be determined that the first stopper 20a has left the first initial position as long as one of the first hall sensors outputs 61 a high level. It can be understood that the first stopper 20a may be judged to be at the first initial position when all the first hall sensors 61 output a low level.

Similarly, the number of the second hall sensors 62 may also be multiple, and the multiple second hall sensors 62 may be disposed on the second flexible circuit board 72 at equal intervals along the first direction and used for detecting the second magnet 52 of the second limiting block 20b at different positions, so that it can be determined that the second limiting block 20b has left the second initial position as long as one of the second hall sensors 62 outputs a high level. It can be understood that the second stopper 20b may be judged to be in the second initial position when all the second hall sensors 62 output a low level.

It can be seen that, in this embodiment, the first hall sensor 61 senses the first magnet 51 and the second hall sensor 62 senses the second magnet 52, so as to determine whether the first limiting block 20a and the second limiting block 20b are at their respective initial positions, and further determine whether the smart glasses are in place, so as to control the operating state of the wireless charging device 100 according to whether the smart glasses are in place or not. The following takes the case where the numbers of the first hall sensor 61 and the second hall sensor 62 are respectively one, and specifically describes the relevant control strategies of the wireless charging device 100 in several operating states.

Fig. 14 is a schematic structural diagram of a control circuit of a wireless charging device according to an embodiment of the present application. Referring to fig. 11 and 12 together, in the present embodiment, the circuit board 10 is provided with a main chip 12, an and gate 13, an or gate 14, an analog switch 15, a delay switch 16, and a first diode D1 and a second diode D2. The first hall sensor 61 and the second hall sensor 62 are powered by the power module 11, the first hall sensor 61 is respectively connected with a first input end of the and gate 13 and a first input end of the or gate 14, and the second hall sensor 62 is respectively connected with a second input end of the and gate 13 and a second input end of the or gate 14; the anode of D1 is connected with the output end of the AND gate 13, and the cathode of D1 is connected with the input end of the delay switch 16 and the system power supply 17; the anode of D2 is connected with the main chip 12, the cathode of D2 is connected with the input end of the delay switch 16 and the system power supply 17; the input end of the analog switch 15 is connected with the output end of the or gate 14, the output end of the analog switch 15 is connected with the main chip 12 through a GPIO, and the control end of the analog switch 15 is connected with the output end of the delay switch 16.

When the wireless charging device 100 is powered off, the smart glasses are placed between the first limiting block 20a and the second limiting block 20b, the first limiting block 20a moves towards the x-axis negative direction, the magnetic field intensity of the first magnet 51 sensed by the first hall sensor 61 is enhanced, and a high level is output; the second stopper 20b moves toward the positive x-axis direction, the magnetic field strength of the second magnet 52 sensed by the second hall sensor 62 increases, and a high level is also output. At this time, both the two input ends of the and gate 13 are at a high level, so that the and gate 13 also outputs the high level to turn on the D1, thereby powering on the system power supply 17, that is, powering on the main chip 12, and switching the wireless charging device 100 to the on state;

after the high level output by the AND gate 13 is delayed by the delay switch 16, the analog switch 15 is enabled; at this time, the high level output by the or gate 14 is output to the GPIO through the analog switch 15, the main chip 12 determines that the smart glasses are in place after detecting that the GPIO is the high level, and controls the power supply module 11 to supply power to the power supply circuit, so that the first transmitting coil 102a and the second transmitting coil 102b charge the smart glasses. It should be noted that the delay switch 16 is provided to prevent the main chip 12 from being damaged due to the GPIO powering on before the system power supply 17 when the wireless charging device 100 is in the power-off state, which affects the reliability of the wireless charging device 100.

Under the condition that the wireless charging device 100 is turned on and the smart glasses are not in place, the main chip 12 turns on the D2, the D2 outputs a high level, and the analog switch 15 is in a normally open state; in this state, after the smart glasses are placed between the first stopper 20a and the second stopper 20b, both input ends of the or gate 14 are at a high level, so that the or gate 14 also outputs a high level, and the output of the analog switch 15 is changed from a low level to a high level and is output to the GPIO; the main chip 12 determines that the smart glasses are in place after detecting that the GPIO is at the high level, and controls the power module 11 to supply power to the power supply circuit, so that the first transmitting coil 102a and the second transmitting coil 102b charge the smart glasses.

Under the condition that the wireless charging device 100 is started and the intelligent glasses are in place, the D2 is kept on and outputs a high level, and at the moment, the analog switch 15 is in a normally open state; in this state, the smart glasses are taken away from the space between the first limiting block 20a and the second limiting block 20b, the first limiting block 20a moves towards the positive direction of the x-axis under the action of the elastic element 30, the magnetic field intensity of the first magnet 51 sensed by the first hall sensor 61 is weakened, and a low level is output; the second stopper 20b moves toward the negative x-axis direction under the action of the elastic member 30, and the magnetic field strength of the second magnet 52 sensed by the second hall sensor 61 is reduced, and a low level is also output. At this time, both input terminals of the or gate 14 are at low level, so the output of the or gate 14 changes from high level to low level; the low level output by the or gate 14 is output to the GPIO through the analog switch, and the main chip 12 determines that the smart glasses are not in place after detecting that the GPIO is the low level, and controls the power supply module 11 to stop supplying power to the power supply circuit. After the intelligent glasses are taken away, the main chip can immediately control the system power supply to be turned off, or can also control the system power supply to be continuously kept in the power-on state for a set time and then be turned off. It should be noted that in some scenarios, for example, during the process of upgrading the system of the wireless charging device, after the smart glasses are removed, the main chip still turns on the D2, and the D2 outputs a high level, so that the system power supply 17 remains powered on until the upgrade is completed.

In summary, the wireless charging device provided by the embodiment of the application can adjust the position of the transmitting coil according to the size of the intelligent glasses, so that the wireless charging device can be matched with the intelligent glasses with various specifications and sizes, and the intelligent glasses with various specifications and sizes can be efficiently charged; in addition, this wireless charging equipment can also be according to the in-place condition automatic adjustment operating condition of intelligent glasses to be favorable to wireless charging equipment's low-power consumption operation and use reliability.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall 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 utility model provides a wireless charging equipment, its characterized in that, wireless charging equipment includes base, circuit board, first transmitting coil and second transmitting coil, wherein:

the base is provided with a bearing surface for bearing the intelligent glasses, the bearing surface is provided with a first limiting block and a second limiting block for clamping the intelligent glasses, the first limiting block and the second limiting block are arranged at intervals along a first direction, and the first limiting block is assembled on the bearing surface in a sliding mode along the first direction;

the circuit board is arranged in the base;

the first emitting coil is arranged on the first limiting block and is electrically connected to the circuit board;

the second transmitting coil is arranged on the second limiting block and electrically connected to the circuit board.

2. The wireless charging device of claim 1 wherein said second stopper is slidably mounted on said carrying surface in said first direction.

3. The wireless charging device of claim 2, further comprising an elastic member elastically retained between the first retaining block and the second retaining block.

4. The wireless charging device of claim 2, wherein the base includes a first sidewall and a second sidewall, the first sidewall and the second sidewall being disposed opposite along the first direction;

the wireless charging equipment comprises a first elastic piece and a second elastic piece, the first elastic piece is elastically limited between the first limiting block and the first side wall, and the second elastic piece is elastically limited between the second limiting block and the second side wall.

5. The wireless charging device according to any one of claims 2 to 4, wherein the base is provided with a first slot and a second slot, and the first slot and the second slot are respectively arranged along the first direction;

the first limiting block is assembled in the first open groove in a sliding mode and comprises a first limiting part and a first extending part, the first limiting part protrudes out of the bearing surface, the first extending part is connected with the first limiting part, and the first extending part is arranged inside the base;

the second limiting block is assembled in the second groove in a sliding mode and comprises a second limiting portion and a second extending portion, the second limiting portion protrudes out of the bearing surface, the second extending portion is connected with the second limiting portion, and the second extending portion is arranged inside the base.

6. The wireless charging device of claim 5, wherein the first transmitting coil is disposed inside the base, and at least a partial projection of the first transmitting coil on the carrying surface is located on a side of the first limiting portion close to the second limiting portion;

the second transmitting coil is arranged in the base, and at least part of projection of the second transmitting coil on the bearing surface is positioned on one side, close to the first limiting part, of the second limiting part.

7. The wireless charging device of claim 5, wherein the first transmitting coil is disposed within the first limiting portion; the second transmitting coil is arranged in the second limiting part.

8. The wireless charging device according to any one of claims 5 to 7, wherein the first limiting part comprises a first portion and a second portion which are sequentially away from the bearing surface, one surface of the first portion facing the second limiting block is a vertical surface, and one surface of the second portion facing the second limiting block is inclined in a direction away from the second limiting block;

the second limiting part comprises a third part and a fourth part which are sequentially far away from the bearing surface, the third part faces the first limiting block, one face of the third part faces the first limiting block, and the fourth part faces the direction, far away from the first limiting block, of one face of the first limiting block and inclines.

9. The wireless charging device of claim 8, wherein the vertical surface of the first portion defines a first groove, and the first groove is disposed along a direction perpendicular to the carrying surface;

and a second groove is formed in the vertical surface of the third part and is arranged in the direction perpendicular to the bearing surface.

10. The wireless charging device according to any one of claims 2 to 9, wherein the base includes a first side wall and a second side wall, the first side wall and the second side wall being disposed opposite to each other along the first direction; the wireless charging device also comprises a first magnet, a second magnet, a first Hall sensor and a second Hall sensor, wherein,

the first magnet is arranged on the first limiting block, the first Hall sensor is arranged on one side, close to the first side wall, in the base and is electrically connected to the circuit board, and the first Hall sensor is used for detecting the magnetic field intensity of the first magnet;

the second magnet is arranged on the second limiting block, the second Hall sensor is arranged on one side, close to the second side wall, in the base and is electrically connected to the circuit board, and the second Hall sensor is used for detecting the magnetic field intensity of the second magnet.

11. The wireless charging device of claim 10, further comprising a first flexible circuit board and a second flexible circuit board;

the first Hall sensor is arranged on the first flexible circuit board and is electrically connected with the circuit board through the first flexible circuit board;

the second Hall sensor is arranged on the second flexible circuit board and is electrically connected with the circuit board through the second flexible circuit board.

12. The wireless charging device according to claim 10 or 11, wherein a main chip and a power supply circuit are provided on a circuit board, the power supply circuit being connected to the first transmitting coil and the second transmitting coil;

the main chip is respectively connected with the first Hall sensor, the second Hall sensor and the power supply circuit and is used for judging whether the intelligent glasses are in place or not according to the detection information of the first Hall sensor and the second Hall sensor; when the intelligent glasses are in place, the power supply circuit is controlled to supply power to the first transmitting coil and the second transmitting coil; when the intelligent glasses are not in place, the power supply circuit is controlled to stop supplying power to the first transmitting coil and the second transmitting coil.