CN218920063U

CN218920063U - Wireless charging coupling structure of electronic equipment and handwriting pen and power supply device

Info

Publication number: CN218920063U
Application number: CN202222025490.3U
Authority: CN
Inventors: 武渊; 王朝; 马雷; 马骋宇
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2023-04-25
Anticipated expiration: 2032-08-02
Also published as: WO2024027188A1

Abstract

The embodiment of the application discloses wireless charging coupling structure and power supply device of electronic equipment and handwriting pen, wherein the wireless charging coupling structure comprises a transmitting module and a receiving module; the transmitting module is arranged on a power supply device, the power supply device can be particularly an interaction device such as a mobile phone, a tablet computer and the like, and the handwriting pen can be used as an input component of the interaction device; the transmitting module comprises a coil component, wherein the coil component is provided with two planar coils which are arranged in a staggered manner, and the current flow directions of the two planar coils are opposite; the receiving module is arranged on the handwriting pen, and is provided with a solenoid which is suitable for coupling the magnetic fields of the two plane coils so as to generate electricity. The transmitting module of the wireless charging coupling structure adopts the two planar coils as coil components, the planar coils have smaller axial size, the installation occupation space in the axial direction can be reduced, and the radiating performance is improved.

Description

Wireless charging coupling structure of electronic equipment and handwriting pen and power supply device

Technical Field

The embodiment of the application relates to the technical field of electronic equipment, in particular to a wireless charging coupling structure and a power supply device of electronic equipment and a handwriting pen.

Background

With the development of society and the progress of technology, a large number of electronic devices with touch control function are continuously emerging in the market to enrich the life of people. Common electronic devices with touch control function generally adopt handwriting mode for input, and when more detailed operation input is needed, handwriting pen can be used as input component. A stylus pen is an electronic device in which a battery is provided to supply power. Under the condition of long-term use, the electric quantity of the handwriting pen is easy to be insufficient, and at the moment, the handwriting pen needs to be charged.

Disclosure of Invention

The embodiment of the application provides a wireless charging coupling structure and a power supply device of electronic equipment and a handwriting pen, wherein a transmitting module of the wireless charging coupling structure adopts two planar coils as coil components, the planar coils are smaller in axial dimension, the installation occupation space in the axial direction can be reduced, and the heat dissipation performance is improved.

In a first aspect, an embodiment of the present application provides a wireless charging coupling structure of a handwriting pen, including a transmitting module and a receiving module. The transmitting module is arranged on the power supply device, and the power supply device can be a simple charging device, a storage device with a storage function and an interaction device capable of interacting with the handwriting pen. The transmitting module comprises a coil component, wherein the coil component is provided with two planar coils which are arranged in a staggered mode, and the current flow directions of the two planar coils are opposite. The receiving module is arranged on the handwriting pen, and is provided with a solenoid which is suitable for coupling the magnetic fields of the two plane coils so as to generate electricity.

In the embodiment of the application, the coil component of the transmitting module comprises two planar coils, the planar coils have smaller size in the axial direction, and occupy less installation space in the axial direction, so that the coil component is particularly suitable for assembling flat-plate type power supply devices such as flat-plate type computers, notebook computers and mobile phones; and the planar coil is tiled, has relatively larger heat dissipation area, has better technical advantage in the aspect of heat dissipation performance, and can adapt to larger charging power so as to be beneficial to realizing quick charging. The receiving module is provided with a solenoid which is a three-dimensional cylindrical coil wound along the axial direction, and the integral shape of the solenoid can be better matched with the appearance of the handwriting pen so as to be convenient for installation in the handwriting pen.

When the electromagnetic induction type electromagnetic induction device is particularly used, two planar coils can generate magnetic fields with opposite directions, and magnetic induction wires can be transmitted in an air gap and can pass through a solenoid to form a closed magnetic loop, so that electromagnetic induction energy transmission can be realized; then, by controlling the continuous change of the current flow direction in the two planar coils, an alternating magnetic field can be generated, and the solenoid continuously cuts the magnetic induction line, so that an induction current can be generated, and the induction current can charge the handwriting pen, thereby realizing wireless charging of the handwriting pen.

Based on the first aspect, the present application embodiment further provides a first implementation manner of the first aspect: the two planar coils may be electrically connected.

By adopting the scheme, the two planar coils are in a conducting state, and the current flow directions in the two planar coils can be naturally opposite only by adjusting the winding mode of the two planar coils, so that the control of the two planar coils can be simplified. And when two planar coils are conducted, the two planar coils are equivalent to a series circuit, the two planar coils only need to be provided with two wire outlet ends, the number of the wire outlet ends can be small, the wire outlet structure of the coil component can be simplified, and then the wireless charging coupling structure provided by the embodiment of the application can be simplified, so that the installation occupation space of the transmitting module in the power supply device can be saved to a certain extent.

Based on the first aspect, or based on the first implementation manner of the first aspect, the present application example further provides a second implementation manner of the first aspect: the coil part may include a circuit board; the surface of the circuit board can be paved with conductive wires, and/or the conductive wires are buried in the circuit board, and the specific forming mode of the conductive wires can be etching; the conductive wire may be enclosed to form the planar coil described above. The circuit board can be used as a carrier of the planar coil, can facilitate the winding of the planar coil, can improve the structural strength of the coil component, and can facilitate the transportation and the installation of the planar coil.

Based on the second implementation manner of the first aspect, the present embodiment further provides a third implementation manner of the first aspect: the circuit board comprises two end plate sections and two connecting plate sections which are connected, the two end plate sections are oppositely arranged, the two connecting plate sections are arranged in a crossing manner, and layering is achieved. In this embodiment, the circuit board is substantially in a shape of 8, and correspondingly, the two planar coils are also substantially in a shape of 8, and the two holes of the shape of 8 can be used as the central holes of the planar coils for coupling with the receiving module.

Based on the third implementation manner of the first aspect, the present embodiment further provides a fourth implementation manner of the first aspect: the extending direction of the end plate section can be a nonlinear direction, so that the area of the 8-shaped holes is more favorably enlarged, and the coupling performance is improved.

Based on any one of the second to fourth embodiments of the first aspect, the present examples further provide a fifth embodiment of the first aspect: one of the two connecting plate sections and the two end plate sections are of an integrated structure. So set up, whole circuit board is equivalent to two parts, and one part includes one and two tip board sections in two connecting plate sections, and another part includes another in two connecting plate sections, and the equipment of circuit board can be relatively convenient.

Of course, both connecting plate sections and both end plate sections may also be of split construction.

Based on any one of the second to fifth embodiments of the first aspect, the present examples further provide a sixth embodiment of the first aspect: the circuit board is a flexible circuit board. The thickness of the flexible circuit board is thinner, so that the dimension of the coil component in the axial direction of the planar coil can be reduced to a greater extent, and the flexible circuit board is favorable for mounting and fixing flat power supply devices such as a tablet personal computer, a notebook computer, a mobile phone and the like.

Of course, the circuit board can also be a hard circuit board, the hard circuit board can provide higher structural strength, and can conveniently process mounting structures such as threaded holes, riveting holes and the like, and can be better adapted to mounting structures in various different forms.

Based on the first aspect, or based on the first implementation manner of the first aspect, the present application example further provides a seventh implementation manner of the first aspect: the coil component may also include only conductive wires, which may be wound to form a two-plane coil. In this case, the coil component can be smaller in size in the axial direction of the planar coil, and accordingly, the installation space of the transmitting module can be smaller.

Based on the first aspect, or based on any one of the second to seventh embodiments of the first aspect, the present application example further provides an eighth embodiment of the first aspect: the transmitting module can also comprise magnetic sheets, and the magnetic sheets are arranged on one sides of the two plane coils, which are away from the receiving module. The magnetic sheet is used for collecting and transmitting magnetic induction wires generated by the two planar coils, so that a magnetic loop is formed, the magnetic permeability can be improved, the planar coils with fewer turns can generate higher inductance, the material consumption of the planar coils is reduced, the cost is reduced, and the installation occupation space of the transmitting module can be further reduced; moreover, the magnetic sheet can collect magnetic induction lines, and the influence of the magnetic field generated by the planar coil on other structural elements in the power supply device can be reduced.

Based on the eighth implementation manner of the first aspect, the present application embodiment further provides a ninth implementation manner of the first aspect: the magnetic sheets of the two plane coils are of an integrated structure. So set up, on the one hand, can make things convenient for the installation of emission module, on the other hand also is favorable to promoting the magnetic permeability.

Based on the first aspect, or based on any one of the second to ninth embodiments of the first aspect, the present application example further provides a tenth embodiment of the first aspect: the receiving module further comprises a magnetic rod, and the solenoid is wound on the outer side of the magnetic rod. The magnetic rod and the magnetic sheet have similar functions, and can be used for collecting and transmitting magnetic induction lines generated by two planar coils so as to form a magnetic loop, and can improve the magnetic permeability so as to improve the coupling characteristic of the solenoid, so that the solenoid with fewer turns can generate higher inductance, the material consumption of the solenoid is reduced, the cost is reduced, and the installation occupation space of the solenoid can be reduced.

Based on the tenth implementation manner of the first aspect, the present application embodiment further provides an eleventh implementation manner of the first aspect: the magnetic rod comprises two protruding sections and a connecting section for connecting the two protruding sections, the solenoid is assembled on the connecting section, the two protruding sections are respectively coupled with the two plane coils, and the coupling coefficient can be improved.

Based on the eleventh implementation manner of the first aspect, the present application embodiment further provides a twelfth implementation manner of the first aspect: both planar coils have a central bore in which the orthographic projection of the two protruding sections of the coil component is located. Therefore, more magnetic induction wires can be ensured to pass through the central hole, and the coupling coefficient of the magnetic rod and the planar coil can be further improved, so that the coupling effect is ensured.

Based on the eleventh or twelfth implementation manner of the first aspect, the present application example further provides a thirteenth implementation manner of the first aspect: the area of the cross section of the protruding section perpendicular to the axial direction is larger than that of the connecting section, so that the coupling performance of the magnetic rod and the two-plane coil can be further improved.

In a second aspect, an embodiment of the present application further provides a power supply device of a handwriting pen, including a transmitting module, where the transmitting module is a transmitting module in the wireless charging coupling structure of the handwriting pen according to the first aspect or any one of implementation manners of the first aspect.

The transmitting module in the first aspect and each implementation manner of the first aspect adopts a planar coil to perform coupling power generation, the planar coil has a smaller size in the axial direction, and accordingly, the installation occupation space in the axial direction is smaller, which is beneficial to reducing the size of the power supply component in the direction. For flat-type components such as a flat-type computer, a notebook computer, a mobile phone and the like, the axial direction of the flat-type coil is the thickness direction of the flat-type components, and accordingly, the thickness of the flat-type components is reduced; more electronic components can be accommodated in the thickness direction under the condition of the same thickness.

And the heat dispersion of the planar coil is better, and the heat dispersion of the power supply device can be improved, so that the setting of higher charging power between the power supply device and the handwriting pen is facilitated, and further, the quick charging can be realized.

Based on the second aspect, the present embodiments also provide a first implementation manner of the second aspect: the power supply device may further include a power supply battery electrically connected to the coil part of the transmitting module such that the coil part may generate the alternating magnetic field.

Based on the second aspect, or based on the first implementation of the second aspect, the present application examples further provide a second implementation of the second aspect: the power supply device can be an interaction device, namely a component which can interact with the handwriting pen, such as a mobile phone, a tablet computer, a notebook computer, a wearable component and the like; or, the power supply device can also be a storage device, so that the handwriting pen can be stored while the handwriting pen is charged wirelessly, and the possibility of losing or damaging the handwriting pen in a non-use state is reduced.

In a third aspect, embodiments of the present application further relate to an electronic device, including a stylus and a power supply device, where the stylus and the power supply device are configured with a wireless charging coupling structure, where the wireless charging coupling structure is a wireless charging coupling structure of the stylus according to the first aspect or any of the embodiments of the first aspect.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a first type of device;

FIG. 3 is a schematic diagram of a second type of device;

FIG. 4 is a schematic diagram of a third type of device;

FIG. 5 is a schematic diagram of some embodiments of the third class of device shown in FIG. 4;

fig. 6 is a schematic structural diagram of some embodiments of a wireless charging coupling structure of a stylus according to embodiments of the present application;

FIG. 7 is a schematic view of the coil assembly of FIG. 6;

FIG. 8 is a schematic view of another coil assembly;

fig. 9 is a schematic structural view of yet another coil component;

fig. 10 is a schematic view of a structure of still another coil part;

FIG. 11 is a schematic view of a structure in which two planar coils are independent of each other;

FIG. 12 is a schematic structural view of a magnetic rod;

fig. 13 is a diagram of the front projection of the protruding section on the coil block and the relative position of the center hole.

The reference numerals in fig. 1 to 13 are explained as follows:

100 power supply devices, 101 cover bodies, 102 box bodies, 103 accommodating grooves, 104 device bodies, 104a positioning grooves, 105 shells and 106 display screens;

200 handwriting pen;

1a transmitting module, 11 coil parts, 111 plane coils, 111a center holes, 112 circuit boards, 112a end plate sections, 112b connecting plate sections, 112c conductive wires and 12 magnetic sheets;

2 receiving module, 21 solenoid, 22 bar magnet, 221 protruding section, 222 connecting section.

Detailed Description

In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments.

In the present embodiments, the terms "first," "second," "third," and the like 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", "a second", or a third "may explicitly or implicitly include one or more such feature.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and for example, "connected" may be either detachably connected or non-detachably connected; may be directly connected or indirectly connected through an intermediate medium. Wherein, "fixedly connected" means that the relative positional relationship is unchanged after being connected with each other. "rotationally coupled" means coupled to each other and capable of relative rotation after coupling. "slidingly coupled" means coupled to each other and capable of sliding relative to each other after being coupled.

References to directional terms in the embodiments of the present application, such as "inner", "outer", etc., are only with reference to the directions of the drawings, and thus, the directional terms are used to better and more clearly describe and understand the embodiments of the present application, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, unless otherwise indicated herein, the term "plurality" as used herein refers to two or more.

In the description of embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the embodiment of the present application, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

As shown in fig. 1, an embodiment of the present application relates to an electronic device, which may include a power supply device 100 and a stylus 200, where the power supply device 100 is provided with a transmitting module, and the stylus 200 is provided with a receiving module, and the transmitting module and the receiving module can be coupled to implement wireless charging of the stylus 200 by the power supply device 100. The wireless charging mode does not need to configure a charging cable between the handwriting pen 200 and the power supply device 100, so that the structure of the electronic equipment can be simplified, meanwhile, a charging interface is not required to be arranged on the handwriting pen 200, the appearance of the handwriting pen 200 can be more exquisite, and the dustproof and waterproof performance of the handwriting pen 200 can be improved.

To ensure the stability of wireless charging, a magnet is usually disposed in the stylus 200 to fix the stylus 200 to the power supply device 100 by means of magnetic attraction. Of course, the magnet may be provided in the power supply device 100, and thus the stylus 200 may be magnetically fixed. It should be noted that, the fixing manner of the stylus 200 is not limited to magnetic attraction, and may include plugging, clamping, and the like, as long as reliable fixing of the stylus 200 can be ensured.

The structural form of the power supply device 100 may be various as long as the wireless charging function for the stylus 200 can be achieved. In this embodiment, according to the functional differences of several typical power supply devices 100, the power supply devices 100 are divided into three types of devices, and for convenience of description, the three types of devices are respectively named as a first type of device, a second type of device and a third type of device, and specific structural forms of the three types of devices will be described in the following embodiments of this application. It is understood that the kind of the power supply device 100 is not limited to the above three kinds of devices.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a first device.

As shown in fig. 2, the first type of device may be a receiving device, including a cover 101 and a case 102. The case 102 may form a receiving groove 103, and the stylus 200 may be placed in the receiving groove 103 in a non-use state. The cover 101 may be mounted on the case 102 and may be movable relative to the case 102 to open and close the accommodating groove 103. In the open state, the stylus 200 may be placed in the accommodation groove 103 to be accommodated, or the stylus 200 may be taken out from the accommodation groove 103. In the blocking state, the entire stylus 200 is encapsulated inside the storage device, and the stylus 200 is not easy to drop and lose.

The cover body 101 and the box body 102 can be in rotational connection, at this time, a rotating shaft can be configured between the cover body 101 and the box body 102, and the cover body 101 can rotate around the central axis of the rotating shaft, so as to realize the blocking and opening of the accommodating groove 103. In this solution, in order to ensure reliable connection between the cover 101 and the box 102 in the blocking state, a magnetic structure may be further configured for the cover 101 and the box 102, so as to ensure the reliability of the cover 101 for blocking the accommodating groove 103 by using a magnetic manner. Of course, besides the magnetic attraction scheme, a clamping structure and the like can be configured, and the reliable connection of the cover body 101 and the box body 102 in the blocking state can be realized.

Alternatively, the cover 101 and the case 102 may be slidably connected, and in this case, one of the cover 101 and the case 102 may be provided with a chute, and the other of the cover 101 and the case 102 may be slidably mounted in the chute, so that the opening of the housing groove 103 can be blocked or opened.

In the embodiment of fig. 2, the receiving means as a whole is presented in a cuboid pattern. In fact, the receiving means may also be provided in other structural patterns, such as triangular prism patterns, pentagonal prism patterns or other profiled structural patterns.

At least one of the cover 101 and the case 102 may be configured with the aforementioned transmitting module, which may generate an alternating magnetic field for realizing wireless charging of the stylus 200. A power supply battery, such as a lithium battery, can be arranged in the storage device, and has a chargeable or replaceable function; the power supply battery can directly provide electric quantity for the transmitting module, so that the transmitting module can generate the alternating magnetic field. Or, the storage device may be configured with a charging interface, where the charging interface may specifically be a lighting interface, a type-c interface, a micro usb interface, a socket, and the like, and then the charging interface may be electrically connected to an external power source (such as a power supply socket) through a connection cable, so as to directly obtain electric energy from the external power source, so that the transmitting module generates the alternating magnetic field described above; of course, the receiving device may also be provided directly with a charging cable, which may be provided with a plug for electrical connection with an external power source, so that power support may also be obtained directly from the external power source.

In other embodiments, the receiving device may include only the case 102, i.e., the cover 101 may not be included.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a second device.

The first type of device is different from the second type of device, and the second type of device can be a charging device which only has a charging function and does not have a storage function. As shown in fig. 3, the second type of device may include a device body 104, in which a transmitting module is disposed in the device body 14, and the transmitting module is capable of generating an alternating magnetic field to realize wireless charging of the stylus 200. The power source of the transmitting module may be a power supply battery or an external power source, and specific reference may be made to the description of the first type of device, which is not repeated herein. The specific structural form of the device body 104 is not limited herein, as long as it does not affect the function of wirelessly charging the stylus 200.

In some embodiments, the device body 104 may also be provided with a positioning slot 104a, and the stylus 200 may be placed in the positioning slot 104a for ensuring reliable installation of the stylus 200 in the power supply device 100.

Unlike the first type of device and the second type of device described above, the third type of device may be an interactive device, which may interact with stylus 200, and stylus 200 may be an input component for the third type of device. In such an embodiment, the power supply device 100 may be, in particular, a handheld component, an in-vehicle component, a wearable component, a computing component, or other processing component connected to a wireless modem. But also cellular phones (cellphones), smart phones (smart phones), personal digital assistants (personal digital assistant, PDA) computers, tablet computers, laptop computers (lap computers), video cameras, video recorders, cameras, smart watches (smart watch), smart wristbands (smart writers), car computers, water Mo Bing, and other terminal components with touch functions.

Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of a third device, and fig. 5 is a schematic structural diagram of some embodiments of the third device shown in fig. 4.

As shown in fig. 4, the power supply device 100 as a third type of device may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a key 190, a motor 191, an indicator 192, a camera 193, a display module 194, a subscriber identity module (subscriber identification module, SIM) card interface 195, and the like. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

It is to be understood that the structure illustrated in fig. 4 does not constitute a specific limitation on the power supply device 100. In other embodiments of the present application, the power supply device 100 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.

The power supply device 100 implements a display function through a graphic processor (graphics processing unit, GPU), a display module 194, an application processor, and the like. The GPU is a microprocessor for image processing, and is connected to the display module 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display module 194 is used to display images, videos, etc. The display module 194 includes a display panel. The display panel may employ a liquid crystal display module (liquid crystal display, LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED) or an active-matrix organic light-emitting diode (matrix organic light emitting diode), a flexible light-emitting diode (flex), a mini, a Micro led, a Micro-OLED, a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED), or the like. In some aspects, the power supply device 100 may include 1 or N display modules 194, where N is a positive integer greater than 1.

The pressure sensor 180A is used to sense a pressure signal, and may convert the pressure signal into an electrical signal. In some aspects, the pressure sensor 180A may be disposed on the display module 194. The pressure sensor 180A is of various types, such as a resistive pressure sensor, an inductive pressure sensor, a capacitive pressure sensor, and the like. The capacitive pressure sensor may be a capacitive pressure sensor comprising at least two parallel plates with conductive material. The capacitance between the electrodes changes when a force is applied to the pressure sensor 180A. The power supply device 100 determines the intensity of the pressure according to the change of the capacitance. When a touch operation is applied to the display module 194, the power supply device 100 detects the touch operation intensity according to the pressure sensor 180A. The power supply device 100 may also calculate the position of the touch based on the detection signal of the pressure sensor 180A. In some schemes, touch operations that act on the same touch location, but with different touch operation strengths, may correspond to different operation instructions. For example: executing an instruction for checking the short message when a touch operation with the touch operation strength smaller than a first pressure threshold acts on the short message application icon; executing an instruction of newly creating the short message when the touch operation with the touch operation intensity being larger than or equal to the first pressure threshold acts on the short message application icon; the specific value of the first pressure threshold is not limited herein.

The touch sensor 180K, also referred to as a "touch device". The touch sensor 180K may be disposed on the display module 194, and the touch sensor 180K and the display module 194 form a touch screen, which is also referred to as a "touch screen". The touch sensor 180K is for detecting a touch operation acting thereon or thereabout. The touch sensor may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display module 194. In other embodiments, the touch sensor 180K may be disposed on the surface of the power supply device 100, and may be disposed on a touch panel of a notebook computer, for example, in a different location from the display module 194.

The battery 142 in the power supply device 100 may be electrically connected to the transmitting module, and is used for providing power support for the transmitting module, so that the transmitting module generates an alternating magnetic field, and wireless charging of the stylus 200 may be further achieved.

As shown in fig. 5, in some embodiments, the power supply device 100 may be a tablet computer, including a housing 105 and a display screen 106.

The housing 105 is formed with an accommodation space for disposing various electronic devices of the terminal apparatus 100, such as the battery 142, the antenna, the main board, the camera 193, the speaker 170A, the transmission module, and the like, as described above. At the same time, the housing 105 may also function to protect the terminal device 100. The display 106 may be mounted to the housing 105. In some embodiments, the housing 105 includes a rear cover and a center frame, and the display screen 106 and the rear cover may be secured to opposite sides of the center frame, respectively. The material of the housing 105 may be metal, plastic, ceramic or glass, and when the housing 105 includes a rear cover and a middle frame, the rear cover and the middle frame may be the same or different.

The housing 105 may determine the structural shape of the terminal device 100, and in the embodiment of fig. 5, the terminal device 100 substantially assumes a rectangular flat plate shape. In other embodiments, the shape of the terminal device 100 may also be square flat, diamond flat, circular flat, oval flat, oblong flat, triangular flat, or shaped flat, etc.

The display 106 may be a liquid crystal display (liquid crystal display, LCD) screen, an organic light emitting diode (organic light emitting diode, OLED) screen, etc., wherein the OLED display may be a flexible display or a rigid display. The display 106 may be a regular screen, a special-shaped screen, a folding screen, etc., for example, the display 106 may be freely rotatable and foldable to form an arc, sphere, cylinder, etc. The display 106 may be disposed on the front surface of the terminal device 100, may be disposed on the back surface of the terminal device 100, or may be disposed on both the front surface and the back surface of the terminal device 100. The front side of the terminal device 100 may be understood as the side facing the user when the user uses the terminal device 100, and the back side of the terminal device 100 may be understood as the side facing away from the user when the user uses the terminal device 100.

Take the front side of the terminal device 100 as an example. In terms of arrangement range, the display screen 106 may cover all areas of the front surface of the terminal device 100, i.e., the terminal device 100 may form a full screen, and at this time, the display screen 106 has not only a display function but also a touch function, i.e., the terminal device 100 may be operated by clicking the display screen 106. Alternatively, the display 106 may cover only a partial area of the front surface of the terminal device 100, and in this case, the display 106 may have a touch function or may have only a display function; when only the display function is provided, the area of the housing 105 where the display screen 106 is not provided may be provided with corresponding man-machine operation elements such as keys for operating the terminal device 100, and these man-machine operation elements may be provided at any position such as the front, back, or side of the terminal device 100.

When charging the stylus 200, the stylus 200 may be placed on a side of the housing 105 away from the display 106, and a specific installation manner may be magnetic attraction, clamping, and the like.

The following embodiments of the present application focus on the specific structures of the wireless charging coupling structure of the stylus 200 and the power supply unit 100, that is, the transmitting module and the receiving module.

Referring to fig. 6, fig. 6 is a schematic structural diagram of some embodiments of a wireless charging coupling structure of a handwriting pen according to an embodiment of the present application.

In some embodiments, as shown in fig. 6, the embodiment of the present application provides a wireless charging coupling structure of a stylus 200, including a transmitting module 1 and a receiving module 2.

The transmitting module 1 includes a coil component 11 and a magnetic sheet 12, where the coil component 11 is mounted on the magnetic sheet 12, and a specific mounting manner may be bonding, clamping, screw connection, welding, riveting, and the like. Wherein, the bonding mode does not need to arrange a mounting structure on the coil component 11 and the magnetic sheet 12, which is beneficial to simplifying the structure of the emission module 1.

The coil component 11 is provided with two planar coils 111 arranged in a staggered manner. The offset arrangement here means that the two planar coils 111 are not coaxial. The planar coil 111 herein specifically refers to a coil wound substantially in the same plane, and includes a plurality of turns, each of which is substantially distributed in a radial direction, but not in an axial direction, so that the formed coil is entirely planar, to be distinguished from a three-dimensional cylindrical coil wound in an axial direction; it should be noted that the embodiment of the present application does not require that the conductive wires of the planar coil 111 be absolutely distributed on one plane, as long as they are wound substantially in the radial direction. The coil component 11 of this form is small in size in the axial direction, occupies little space for installation in the axial direction, and is particularly suitable for assembly of the flat-type power supply device 100 in a tablet computer, a notebook computer, a cellular phone, or the like. In addition, the coil component 11 has a relatively large heat dissipation area, has a better technical advantage in terms of heat dissipation performance, and can adapt to larger charging power so as to be beneficial to realizing quick charging.

The current flow in the two planar coils 111 may be reversed such that the directions of the magnetic fields generated by the two planar coils 111 are substantially reversed.

The magnetic sheet 12 may be substantially plate-shaped, and may be located at a side of the coil component 11 facing away from the receiving module 2, for collecting and transmitting magnetic induction lines generated by the two planar coils 111, so as to form a magnetic loop, and may improve magnetic permeability, so that the planar coil 111 with fewer turns may generate higher inductance, which is beneficial to reducing material consumption of the planar coil 111, reducing cost, and further reducing installation space occupation of the transmitting module 1; moreover, the magnetic sheet 12 can reduce the influence of the magnetic field generated by the planar coil 111 on other structural elements inside the power supply device 100 for collection of the magnetic induction lines. In the embodiment of fig. 6, the two planar coils 111 may share the same magnetic sheet 12, which may facilitate the installation of the transmitting module 1 in the power supply device 100 on the one hand, and may also facilitate the improvement of the magnetic permeability on the other hand. Of course, the magnetic sheet 12 may be disposed for each of the two planar coils 111, and in this case, the amount of the magnetic sheet 12 may be small, so that the installation space of the transmitter module 1 may be reduced to a greater extent.

The magnetic sheet 12 may be made of a soft magnetic material such as ferrite or nanocrystalline. Taking nanocrystalline as an example, the magnetic sheet 12 may be prepared using multilayer nanocrystalline to enhance the coupling performance of the magnetic sheet 12.

The receiving module 2 includes a solenoid 21 and a magnetic rod 22, where the solenoid 21 is a three-dimensional cylindrical coil wound along an axial direction of the magnetic rod 22, and a specific winding manner may be clockwise or counterclockwise. The solenoid 21 is suitable for coupling the magnetic fields of the two planar coils 111, and the magnetic rod 22 is used for collecting and transmitting the magnetic induction lines generated by the two planar coils 111, so as to form a magnetic loop, and can improve the magnetic permeability to improve the coupling characteristic of the solenoid 21, so that the solenoid 21 with fewer turns can generate higher inductance, thereby being beneficial to reducing the material consumption of the solenoid 21, reducing the cost and reducing the installation occupation space of the solenoid 21. The magnetic rod 22 may be made of a soft magnetic material such as ferrite or nanocrystalline.

By adopting the above scheme, the magnetic fields generated by the two planar coils 111 with opposite directions can be transmitted in the magnetic sheet 12, the magnetic rod 22 and the gap to form a closed magnetic loop, so that electromagnetic induction energy transmission can be realized, then an alternating magnetic field can be generated by controlling the continuous change of the current flow direction in the two planar coils 111, the solenoid 21 can continuously cut the magnetic induction wire, and induction current can be generated, and the induction current can charge the handwriting pen 200, so that wireless charging of the handwriting pen 200 is realized.

In other embodiments, the magnetic sheet 12 may be omitted from the transmitting module 1, and the structure of the transmitting module 1 may be simpler, the installation space of the transmitting module 1 may be smaller, and the cost may be lower. Similarly, the receiving module 2 can also dispense with the magnetic rod 22, in which case the design of the receiving module 2 can also be simplified, the installation space for the receiving module 2 can also be smaller and the costs can also be lower. When the magnetic sheet 12 and the magnetic rod 22 are omitted, the magnetic induction lines generated by the two planar coils 111 may be propagated in the air and coupled with the solenoid 21.

As also shown in fig. 6, the coil part 11 may include a circuit board 112, a surface of the circuit board 112 may be laid with conductive wires 112c, and/or an inside of the circuit board 112 may be buried with the conductive wires 112c; the conductive line 112c may be formed by etching or the like; the conductive wire 112c can be formed to enclose the planar coil 111, and the number of turns of the planar coil 111 is not limited herein, and may be specifically determined in conjunction with the actual inductance requirement or the like. By adopting the scheme, the circuit board 112 is a carrier of the planar coil 111, so that the planar coil 111 can be conveniently wound, the structural strength of the coil component 11 can be improved, and the planar coil 111 can be conveniently transported and installed.

Referring to fig. 7, fig. 7 is a schematic structural view of the coil assembly in fig. 6.

As shown in fig. 7, in some embodiments, the circuit board 112 may include two end plate segments 112a and two connecting plate segments 112b that are connected, the two end plate segments 112a may be disposed opposite each other, and the two connecting plate segments 112b may be disposed in a cross-over manner to achieve layering. Thus, the circuit board 112 has an 8-shaped structure, the two planar coils 111 can be wound by the conductive wire 112c at the same time, the two planar coils 111 can be electrically connected, and when the conductive wire 112c is electrified, the current directions in the two planar coils 111 can be naturally opposite, the current magnitudes can be the same, and the control of the two planar coils 111 can be simplified. The coil part 11 of this form may have two wire outlets, and the positions of the two wire outlets may not be limited, and may be specifically determined in connection with the actual installation environment or the like.

In the present embodiment, the conductive wires 112c of the two planar coils 111 are not entirely located in the same plane due to the intersecting arrangement of the two connection plate segments 112 b.

The end plate segment 112a may be in a U shape, and the central hole 111a of the planar coil 111 is basically in a pentagonal hole in cooperation with two connecting plate segments 112b disposed in a crossing manner, so that the magnetic conduction area of the central hole 111a is larger, and the coupling with the magnetic rod 22 can be better performed.

In addition to the U-shaped design described above, the end plate segment 112a may be configured in other shapes. In some embodiments, the extending direction of the end plate segment 112a may still be a non-linear direction, and in this case, the end plate segment 112a may take various structural shapes such as arc-shaped, V-shaped, and the like. In other embodiments, the extension direction of the end plate segment 112a may also be a straight direction, in which case it is also possible that the end plate segment 112a presents a straight plate segment.

Likewise, the extending direction of the connecting plate segment 112b may be a straight line direction or a non-straight line direction.

It will be appreciated that the shape design of the end plate segments 112a and the connecting plate segments 112b substantially determines the structural style of the central bore 111a of the planar coil 111. In the embodiment of fig. 6 and 7, the central aperture 111a is a pentagonal aperture. In addition, the central hole 111a may be a circular hole, an oval hole, a triangular hole, a quadrangular hole, other polygonal holes (the number of sides is greater than 5), or some special-shaped holes.

With continued reference to fig. 7, during the manufacturing process, one of the two web segments 112b and the two end segments 112a may be of unitary construction. Thus, the entire circuit board 112 is equivalent to two parts, one part comprising one of the two connection plate sections 112b and the two end plate sections 112a, and the other part comprising the other of the two connection plate sections 112b, and the assembly of the circuit board 112 can be relatively easy; the connection manner of the two parts of the circuit board 112 may include bonding, clamping, screw connection, welding, riveting, etc., so long as it is ensured that the conductive wires 112c of the two parts can be electrically connected.

In other embodiments, the two connecting plate segments 112b and the two end plate segments 112a may be split structures, and then connected by bonding, clamping, screwing, welding, riveting, etc., so that the connecting plate segments 112b and the end plate segments 112a with complex shapes are more conveniently formed, and the saving of materials is facilitated.

The circuit board 112 may be a hard circuit board, which may provide higher structural strength, and may be conveniently processed with mounting structures such as threaded holes, riveted holes, etc., and may be better adapted to a variety of different types of mounting structures. Alternatively, the circuit board 112 may be a flexible circuit board, where the thickness of the flexible circuit board is relatively small, so that the size of the coil component 11 in the axial direction of the planar coil 111 can be reduced to a greater extent, which is beneficial for mounting and fixing the planar power supply device 100 in a tablet computer, a notebook computer, a mobile phone, etc.

Referring to fig. 8, fig. 8 is a schematic structural diagram of another coil component.

In other embodiments, the planar coil 111 provided on the circuit board 112 may be wound separately. As shown in fig. 8, the conductive wire 112c may be wound first with the left planar coil 111 and then with the right planar coil 111. In this way, there is substantially no overlap of the two planar coils 111 in the axial direction of the planar coils 111, and the conductive wires 112c of the two planar coils 111 are substantially in one plane, enabling the dimension of the coil component 11 in the axial direction of the planar coils 111 to be reduced to a greater extent.

In this embodiment, the circuit board 112 may be of a unitary structure or of a split structure.

Referring to fig. 9 and 10, fig. 9 is a schematic structural view of yet another coil component, and fig. 10 is a schematic structural view of yet another coil component.

As shown in fig. 9 and 10, in other embodiments, the coil component 11 may include only the conductive wire 112c, and the conductive wire 112c may be wound to form the two-plane coil 111. At this time, the coil component 11 has a smaller size in the axial direction of the planar coil 111, which is more beneficial to reducing the installation space occupied by the transmitting module 1 in the power supply device 100, so as to facilitate the installation and fixation of the planar power supply device 100 in a tablet computer, a notebook computer, a mobile phone, etc.

In this embodiment, the wire outlet end of the planar coil 111 may be located radially inward of the planar coil 111 or radially outward of the planar coil 111. The positions of the wire ends of the two planar coils 111 may be the same or different.

Referring to fig. 11, fig. 11 is a schematic structural diagram of two planar coils when they are independent of each other.

In other embodiments, as shown in fig. 11, the two planar coils 111 may be independent of each other. At this time, two wire outlets may be disposed on both of the two planar coils 111, and the current direction and the current magnitude of the two planar coils 111 may be controlled individually.

Referring to fig. 12, fig. 12 is a schematic structural diagram of a magnetic rod.

As shown in fig. 12, and in combination with fig. 6, the magnetic rod 22 may include two protruding sections 221 and a connecting section 222 connecting the two protruding sections 221, and the solenoid 21 may be assembled to the connecting section 222 such that the two protruding sections 221 protrude along the axial direction both ends of the solenoid 21, respectively, and the two protruding sections 221 may be used to couple with the two planar coils 111, respectively, to improve the coupling coefficient. In other embodiments, only one protruding segment 221 may be present, or protruding segment 221 may not be present.

The area of the cross section perpendicular to the axial direction of the two protruding sections 221 may be larger than that of the connecting section 222, i.e., the magnetic rod 22 may be formed in a dumbbell-like structure with both ends thick and thin in the middle, so that the coupling performance of the magnetic rod 22 and the two-plane coil 111 may be better.

The shape of the cross section of the magnetic rod 22 perpendicular to the axial direction is not limited in the embodiment of the present application, and a person skilled in the art may design the magnetic rod according to actual needs as long as the magnetic rod can meet the requirements of use. In the embodiment of fig. 12, the cross section of the magnetic rod 22 perpendicular to the axial direction is similar to a rectangle, but in addition, the cross section of the magnetic rod 22 perpendicular to the axial direction may be designed as a circle, a triangle, a quadrangle, other polygons (the number of sides is greater than 4), or other special shapes.

Referring to fig. 13, fig. 13 is a front projection of the protruding section on the coil block and a relative position of the center hole.

In some alternative embodiments, as shown in fig. 13, the orthographic projection of the protruding section 221 on the coil part 11 may be located within the central hole 111 a. By this arrangement, it is possible to ensure that more magnetic induction lines pass through the center hole 111a, and the coupling coefficient of the magnetic rod 22 and the planar coil 111 can be further improved to ensure the coupling effect.

The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.

Claims

1. A wireless charging coupling structure of a handwriting pen, comprising:

the transmitting module is arranged on the power supply device and comprises a coil component, wherein the coil component is provided with two planar coils which are arranged in a staggered manner, and the current flow directions of the two planar coils are opposite;

and the receiving module is arranged on the handwriting pen and is provided with a solenoid, and the solenoid is suitable for coupling magnetic fields of the two plane coils so as to generate power.

2. The wireless charging coupling structure of a stylus pen according to claim 1, wherein the two planar coils are electrically connected.

3. The wireless charging coupling structure of a stylus pen according to claim 1, wherein the coil component comprises a circuit board, a conductive wire is laid on the surface of the circuit board, and/or a conductive wire is buried inside the circuit board, and the conductive wire encloses the planar coil.

4. A wireless charging coupling structure for a stylus according to claim 3, wherein the circuit board comprises two end plate sections and two connecting plate sections connected, the two end plate sections being disposed opposite each other, the two connecting plate sections being disposed in a cross-section.

5. The wireless charging coupling structure of a stylus of claim 4, wherein the extension direction of the end plate segment is a non-linear direction.

6. The wireless charging coupling structure of a stylus of claim 4, wherein one of the two web segments and the two end segments are of unitary construction.

7. The wireless charging coupling structure of a stylus of claim 3, wherein the circuit board is a flexible circuit board.

8. The wireless charging coupling structure of a stylus pen according to claim 1, wherein the coil component comprises only conductive wires wound to form two of the planar coils.

9. The wireless charging coupling structure of a stylus pen according to any one of claims 1-8, wherein the transmitting module further comprises magnetic sheets, and the magnetic sheets are arranged on both sides of the planar coil facing away from the receiving module.

10. The wireless charging coupling structure of a stylus pen according to claim 9, wherein the magnetic sheets of the two planar coils are of unitary construction.

11. The wireless charging coupling structure of a stylus according to any one of claims 1-8, wherein the receiving module further comprises a magnetic rod, the solenoid being wound on an outer side of the magnetic rod.

12. The wireless charging coupling structure of a handwriting pen according to claim 11, wherein the magnetic rod comprises two protruding sections and a connecting section connecting the two protruding sections, the solenoid is assembled to the connecting section, and the two protruding sections are respectively coupled with the two planar coils.

13. The wireless charging coupling structure of a stylus pen according to claim 12, wherein both of the planar coils have a central hole in which an orthographic projection of both of the protruding sections on the coil member is located.

14. The wireless charging coupling structure of a stylus according to claim 12, wherein the protruding section has a larger area perpendicular to the axial direction than the connecting section.

15. A power supply device for a stylus pen, comprising a transmitting module, the transmitting module being in a wireless charging coupling structure of the stylus pen according to any one of claims 1-14.

16. The stylus power supply of claim 15 further comprising a power supply battery, the power supply battery being electrically connected to the coil assembly of the transmitter module.

17. The stylus power supply of claim 15 or 16, wherein the power supply is an interactive device or the power supply is a receiving device.

18. An electronic device comprising a stylus and a power supply device, the stylus and the power supply device being configured with a wireless charging coupling structure, characterized in that the wireless charging coupling structure is a wireless charging coupling structure of the stylus of any one of claims 1-14.