CN110648831A

CN110648831A - Wireless charging coil, wireless charging assembly and electronic equipment

Info

Publication number: CN110648831A
Application number: CN201810595633.XA
Authority: CN
Inventors: 万世铭
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-06-11
Filing date: 2018-06-11
Publication date: 2020-01-03

Abstract

The embodiment of the application provides a wireless charging coil, wireless subassembly and electronic equipment that charges, wireless charging coil includes first link and second link, wherein, first link sets up the centre of wireless charging coil, the second link sets up the edge of wireless charging coil, first link is used for the tie point on the lug connection circuit board. The thickness of the wireless charging coil can be reduced.

Description

Wireless charging coil, wireless charging assembly and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a wireless charging coil, a wireless charging assembly and electronic equipment.

Background

With the popularization of wireless charging, more and more electronic devices support functions such as wireless charging. Such as smart phones and wireless charging cradles. The smart phone and the wireless charging base are wirelessly charged in a non-contact mode through the wireless charging coil.

However, the existing wireless charging coil includes a first tap and a second tap for connecting the wireless charging circuit, wherein the first tap is disposed at the outer edge of the wireless charging coil, the second tap is pulled out from the inside of the wireless charging coil to be parallel to the first tap, and the first tap and the second tap are together convenient for the electrical connection of the wireless charging coil and the main board. But because the second is taken a percentage and is drawn out from wireless charging coil is inside, the second is taken a percentage and just has two-layer thickness of walking the line from the inside interval that extends to wireless charging coil edge of wireless charging coil, has increased the thickness of wireless charging coil.

Disclosure of Invention

The embodiment of the application provides a wireless charging coil, a wireless charging assembly and an electronic device, and the thickness of the wireless charging coil can be reduced.

The embodiment of the application provides a wireless charging coil, and it includes first link and second link, wherein, first link sets up the centre of wireless charging coil, the second link sets up the edge of wireless charging coil, first link is used for the tie point on the lug connection circuit board.

The embodiment of the application provides a wireless subassembly that charges, it includes:

the wireless charging coil comprises a first connecting end and a second connecting end, wherein the first connecting end is arranged in the middle of the wireless charging coil, and the second connecting end is arranged at the edge of the wireless charging coil;

the circuit board comprises a first connecting point and a second connecting point which are arranged on the surface of the circuit board, the first connecting point is directly electrically connected with the first connecting end, the second connecting point is electrically connected with the second connecting end, and the first connecting point and the second connecting point are used for electrically connecting a wireless charging circuit.

The embodiment of the application also provides electronic equipment which comprises a shell and a wireless charging assembly, wherein the wireless charging assembly is arranged in the shell and comprises a wireless charging coil and a circuit board;

the circuit board comprises a first connecting point and a second connecting point which are arranged on the surface of the circuit board, the first connecting point is directly electrically connected with the first connecting end, the second connecting point is electrically connected with the second connecting end, and the first connecting point and the second connecting point are used for electrically connecting the wireless charging circuit.

The embodiment of the application provides a wireless charging coil, it includes first link and second link, wherein, first link sets up the centre of wireless charging coil, the second link sets up the edge of wireless charging coil, first link is used for the tie point on the lug connection circuit board. The first connecting end of the wireless charging coil is electrically connected with the connecting point of the circuit board in the wireless charging coil, the wireless charging coil does not need to be pulled out from the wireless charging coil, the outgoing line of the first connecting end does not need to penetrate through the wireless charging coil, the thickness of two layers of wireless charging coils in wiring is avoided, and the thickness of the wireless charging coil is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of a wireless charging coil provided in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a wireless charging assembly according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a second structure of a wireless charging assembly according to an embodiment of the present application.

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

Fig. 5 is a sectional view taken along a-a' direction in fig. 4.

Fig. 6 is a fourth structural schematic diagram of a wireless charging assembly provided in an embodiment of the present application.

Fig. 7 is a fifth structural schematic diagram of a wireless charging assembly according to an embodiment of the present application.

Fig. 8 is an overall schematic diagram of wireless charging provided in the embodiment of the present application.

Fig. 9 is a schematic structural diagram of a wireless charging device provided in an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a wireless charging system provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides a wireless charging coil, a wireless charging assembly and an electronic device. The details will be described below separately.

Wireless charging technology does not need the cable to accomplish the transmission of power, therefore, wireless charging technology is receiving more and more people's favor. The wireless charging technology generally connects an adapter with a wireless charging device (e.g., a wireless charging base), and wirelessly transmits output power of the adapter to a device to be charged through the wireless charging device (e.g., electromagnetic waves), so as to wirelessly charge the device to be charged.

According to different wireless charging principles, wireless charging methods are mainly classified into three methods, namely magnetic coupling (or electromagnetic induction), magnetic resonance and radio wave.

Currently, the mainstream wireless charging standards include QI standard, power association (PMA) standard, and wireless power association (A4 WP). The QI standard and the PMA standard both adopt a magnetic coupling mode for wireless charging. The A4WP standard uses magnetic resonance for wireless charging.

The wireless charging coil, the wireless charging assembly and the electronic device provided by the embodiment of the application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic diagram of a wireless charging coil according to an embodiment of the present disclosure. This wireless charging coil 52 includes first link 522 and second link 523, wherein, first link 522 sets up in the middle of wireless charging coil 52, second link 523 sets up the edge of wireless charging coil 52, first link 52 is used for the tie point on the direct connection circuit board.

Wherein, the wireless charging coil 52 may be formed by winding a length of metal wire. Specifically, the metal wire includes a first connection end 522 and a second connection end 523, the first connection end 522 is kept still, the metal wire is wound around the first connection end 522 for a plurality of turns, and the radius of the plurality of turns of metal wire is gradually increased, so that the plurality of turns of metal wire are not overlapped in the thickness direction, two adjacent turns of metal wire may be adjacently disposed, and the second connection end 523 is located at the outermost side of the plurality of turns of metal wire. The multi-turn metal wire comprises at least two turns. The adjacent two circles of metal wires can also be not adjacently arranged. An insulating layer is arranged outside the metal wire, and the metal wire can be an enameled wire and the like. The metal wire can adopt metal or alloy with better wire performance, such as copper, copper alloy, gold and the like. The length of the section of metal wire is set according to the requirement of the wireless charging coil, and the diameter of the metal wire is generally 1mm-2 mm. The first connection end 522 and the second connection end 523 may be directly electrically connected to an external conductor, for example, connected by soldering or clamped into a conductive hole, where the hole wall of the conductive hole is made of metal.

First connection end 522 just with the direct electric connection of the tie point with the circuit board in wireless charging coil 52, need not pull out again from wireless charging coil 52 outside wireless charging coil 52, the play line of first connection end 522 need not pass wireless charging coil 52, no longer like prior art, first connection end 522 extends to wireless charging coil 52 outside from wireless charging coil 52 is inside, can not have the thickness that two-layer coil was walked the line, has reduced wireless charging coil 52's thickness. For example, smart mobile phone is done more and more thin now, and wireless charging coil in the current scheme has two-layer to walk the line, and thickness is thicker, is unfavorable for smart mobile phone's frivolousness, and the 52 thickness of wireless charging coil in the wireless charging coil subassembly of this embodiment is walked the line for the individual layer, accords with the requirement of smart mobile phone thickness. The connection point of the circuit board can be connected with the wireless charging circuit through the wiring printed on the circuit board.

In some embodiments, wireless charging coil 52 comprises at least two turns of wire with a gap disposed between adjacent ones of the at least two turns of wire, the gap having a non-conductive material disposed therein.

The metal wire can be firstly wound to form a plurality of circles of metal wires, the radius of the plurality of circles of metal wires is gradually increased, a gap is formed between every two adjacent circles of metal wires, then non-conductive materials such as plastics, plastics and the like are filled into the adjacent gaps, and finally the wireless charging coil is formed. Wherein, conductive ports are respectively reserved at the two ends of the wireless charging coil. The middle of the wireless charging coil is provided with a first connecting end at the edge of the wireless charging coil.

In some embodiments, the upper surface of the wireless charging coil 52 can be one plane, in other embodiments, the lower surface of the wireless charging coil 52 can also be one plane. The cross-section of the wire in wireless charging coil 52 can be circular, but can also be other shapes, such as oval, square, etc.

In some embodiments, wireless charging coil 52 comprises at least two turns of wire, the upper surface of any of the at least two turns of wire being in the same plane. It is also understood that any two turns of wire in a wireless charging coil are substantially parallel, all disposed in the same layer.

In some embodiments, the wireless charging coil 52 comprises at least two turns of wire, the wire comprises a metal wire and a protective layer wrapping the metal wire, the protective layer is made of non-conductive material, and the upper surfaces of any one of the at least two turns of wire are in the same plane.

The wire in wireless charging coil 52 is a wire that is first set to be independent insulation, i.e., the wire is inside, and the outside is wrapped by a non-conductive protective layer, and any two adjacent turns of wire are not conductive to each other. Wherein, the upper surface of any circle of wire in at least two circles of wire is in the coplanar. It is also understood that any two turns of the wire in the wireless charging coil 52 are substantially parallel, all disposed in the same layer. The metal wire in the lead can be cylindrical, and the protective layer wrapping the metal wire is also hollow and cylindrical. Of course, the metal wires in the conductive wires may have other shapes, such as oval, square, etc. Similarly, the protective layer covering the metal wire may have other shapes, such as oval, square, etc.

In some embodiments, wireless charging coil 52 comprises at least two turns of wire, with adjacent ones of the at least two turns of wire being spaced apart. The wires in wireless charging coil 52 are spaced apart from each other and are not merely attached together. And appropriate adjustment can be carried out at the later stage so as to adapt to requirements under different environments.

In some embodiments, the circle of wire with the smallest radius in the wireless charging coil 52 encloses a receiving area 524, and the first connection end 522 is disposed in the receiving area 524. The center of the wireless charging coil 52 is not solid, that is, there is a part of empty space inside, the empty space is the accommodation area 524, the first connection end is disposed in the accommodation area 524, and a circle of wire with the smallest radius of the wireless charging coil 52 extends out to connect with the first connection end 522. Wherein the first connection end 522 can be disposed at the center of the wireless charging coil 52, i.e., the center of the receiving area 524.

In some embodiments, the wireless charging coil is solid, that is, the center of the wireless charging coil is the first connection end, and the wire of the wireless charging coil is around the first connection end. Compact structure and highest space utilization rate.

Referring to fig. 2, fig. 2 is a schematic view illustrating a first structure of a wireless charging assembly according to an embodiment of the present disclosure. The wireless charging assembly comprises a wireless charging coil 52 and a circuit board 53.

Wireless charging coil 52 includes first link 522 and second link 523, wherein the first link 522 is disposed in the middle of wireless charging coil 52, and the second link 523 is disposed at the edge of wireless charging coil 52. Specifically, the wireless charging coil 52 includes a metal wire, the metal wire includes a first connection end 522 and a second connection end 523, the metal wire may be wound around the first connection end 522 for at least two turns to form a coil pattern 521, the first connection end 522 is disposed in the middle of the coil pattern 521, and the second connection end 523 is disposed at an edge of the coil pattern 521.

The coil pattern 521 may be formed by winding a length of metal wire. Specifically, the metal wire includes a first connection end 522 and a second connection end 523, the first connection end 522 is kept still, the metal wire is wound around the first connection end 522 for a plurality of turns, and the radius of the plurality of turns of metal wire is gradually increased, so that the plurality of turns of metal wire are not overlapped in the thickness direction, two adjacent turns of metal wire may be adjacently disposed, and the second connection end 523 is located at the outermost side of the plurality of turns of metal wire. The multi-turn metal wire comprises at least two turns. The adjacent two circles of metal wires can also be not adjacently arranged. An insulating layer is arranged outside the metal wire, and the metal wire can be an enameled wire and the like. The metal wire can adopt metal or alloy with better wire performance, such as copper, copper alloy, gold and the like. The length of the section of metal wire is set according to the requirement of the wireless charging coil, and the diameter of the metal wire is generally 1mm-2 mm.

The circuit board 53 includes a first connection point 531 and a second connection point 532 disposed on a surface of the circuit board 53, the first connection point 531 is electrically connected to the first connection end 522 directly, the second connection point 532 is electrically connected to the second connection end 523, and the first connection point 531 and the second connection point 532 are electrically connected to the wireless charging circuit.

The first connection end 522 of the wireless charging coil 52 is directly and electrically connected with the wire of the circuit board 53 in the coil pattern 521, and does not need to be pulled out from the coil pattern 521 to the outside of the coil pattern 521, and the outgoing line of the first connection end 522 does not need to pass through the coil pattern 521, unlike the prior art, the first connection end 522 extends from the inside of the coil pattern 521 to the outside of the coil pattern 521, so that the thickness of two layers of coil wires is avoided, and the thickness of the wireless charging coil 52 is reduced. For example, smart mobile phone is done more and more thin now, and wireless charging coil in the current scheme has two-layer to walk the line, and thickness is thicker, is unfavorable for smart mobile phone's frivolousness, and the 52 thickness of wireless charging coil in the wireless charging coil subassembly of this embodiment is walked the line for the individual layer, accords with the requirement of smart mobile phone thickness.

In some embodiments, the innermost turn of the metallic wire of the wireless charging coil 52 encloses a hollow area within which the first connection end 522 is disposed. The first connection point 531 is disposed corresponding to the hollow region, so that the first connection end 522 and the first connection point 531 can be directly electrically connected in the hollow region. Specifically, the projection of the first connection end 522 on the circuit board 53 intersects or coincides with the first connection point 531, and the first connection point 531 and the first connection end 522 may be directly soldered together by solder, so as to complete the direct electrical connection between the first connection point 531 and the first connection end 522. The projection of the first connection end 522 on the circuit board 53 may not intersect with the first connection point 531, and a distance exists between the first connection point 531 and the first connection end 522, where the distance is smaller, for example, smaller than 1cm, and the first connection point 531 and the first connection end 522 may be directly soldered together by using solder, so as to complete the direct electrical connection between the first connection point 531 and the first connection end 522.

In some embodiments, the innermost turn of the metal wire of the wireless charging coil 52 is connected adjacent to the first connection end 522, there is no hollow area in the middle of the wireless charging coil 52, the projection of the first connection end 522 on the circuit board 53 intersects or coincides with the first connection point 531, and the first connection point 531 and the first connection end 522 can be directly soldered together by soldering tin, thereby completing the direct electrical connection between the first connection point 531 and the first connection end 522.

The first connection point 531 and the second connection point 532 electrically connected to the wireless charging circuit may be connected by a trace printed on the circuit board 53 or connected by a trace disposed on an intermediate layer of the circuit board.

In some embodiments, the wireless charging coil may be applied to a device to be charged, and the wireless charging circuit on the circuit board may be a wireless receiving charging circuit that receives a wireless signal to charge the battery. Referring to fig. 3, fig. 3 is a schematic diagram illustrating a second structure of a wireless charging assembly according to an embodiment of the present disclosure. The wireless charging coil can be applied to the device to be charged 61, and for the device to be charged 61 (such as a mobile phone), the device to be charged 61 includes a receiving coil 611 (wireless charging coil) and a wireless receiving circuit 610, a wireless charging power receiving chip 612, a battery charging management chip 613 and a battery 614. The receiving coil 611 is used for receiving energy (e.g., electromagnetic energy) emitted by the wireless charging device 62 and converting the energy into an ac signal. The wireless charging power receiving chip 612 is electrically connected to the receiving coil 611, and performs analog-to-digital conversion (AC-DC) on the AC electrical signal of the receiving coil 611 to obtain a DC electrical signal, and the wireless charging power receiving chip 612 may also perform operations such as rectification and filtering before or after the analog-to-digital conversion. The battery charging management chip 613 is electrically connected to the wireless charging power receiving chip 612, and converts the dc signal of the wireless charging power receiving chip 612 into an electrical signal for powering the battery 614, such as performing voltage conversion. In this embodiment, the wireless charging circuit electrically connected to the receiving coil 611 (wireless charging coil) is the wireless receiving circuit 610.

In some embodiments, the wireless receiving circuit 610 further includes a first control chip 615, the first control chip 615 is electrically connected to the wireless charging power receiving chip 612 and the battery charging management chip 613 respectively, and the first control chip 615 can control the wireless charging power receiving chip 612 and the battery charging management chip 613 to operate or stop.

In some embodiments, the wireless charging coil may be applied to a wireless charging device, and the wireless charging circuit on the circuit board may be a wireless transmitting charging circuit that transmits a wireless signal.

In some embodiments, a wireless charging coil may also be applied to the wireless charging device 62, and for the wireless charging device 62 (e.g., a wireless charging base), the wireless charging device 62 includes a transmitting coil 623 (wireless charging coil) and a wireless transmitting circuit 620. The wireless transmission circuit 620 includes: a voltage conversion module 621, a wireless charging power transmitting chip 622. The voltage conversion module 621 converts the voltage, such as raising the voltage of the circuit. The wireless charging power transmitting chip 622 is electrically connected to the voltage converting module 621, and performs digital-to-analog conversion (DC-AC) on the boosted voltage to obtain an alternating current signal. The transmitting coil 623 is electrically connected to the wireless charging power transmitting chip 622, and converts the ac signal into electromagnetic energy to be transmitted. In this embodiment, the wireless charging circuit electrically connected to the transmitting coil 623 (wireless charging coil) is the wireless transmitting circuit 620.

A wired interface may also be included in the wireless transmitter circuit 620, and the wired interface is connected to a power source (mains) via an adapter, which converts a power source (e.g., ac 220V) into an electrical signal (e.g., dc 5V) suitable for the wireless charging device. The wired interface is electrically connected to the voltage conversion module 621.

In some embodiments, the wireless transmitting circuit 620 further includes a second control chip 624, the second control chip 624 is electrically connected to the voltage converting module 624 and the wireless charging power transmitting chip 622, respectively, and the second control chip 624 can control the voltage converting module 621 and the wireless charging power transmitting chip 622 to operate or stop.

In some embodiments, the wireless charging power transmitting chip 622 may be replaced with an inverter circuit and a resonant circuit. The inverter circuit may include a plurality of switching tubes, and the magnitude of the output power may be adjusted by controlling the on-time (duty ratio) of the switching tubes. A resonant circuit for transferring electrical energy away, for example, may include a capacitor and a transmitting coil. By adjusting the resonant frequency of the resonant circuit, the output power of the wireless transmitting circuit can be adjusted.

The first connection point 531 is electrically connected to the first connection end 522, the second connection point 532 is electrically connected to the second connection end 523, the first connection point 531 and the second connection point 532 are connected to the wireless charging circuit 54, and the wireless charging circuit 54 controls the wireless charging coil 52 to transmit energy or receive energy.

Specifically, in some embodiments, the first connection point 531 is a pad, and the first connection point 531 is connected to the first connection end 522 by soldering.

In some embodiments, the second connection point 532 is a pad, and the second connection point 532 is soldered to the second connection terminal 523.

In some embodiments, the first connection point 531 is a pad, and the first connection point 531 is connected to the first connection end 522 by welding; the second connection point 532 is a pad, and the second connection point 532 is solder-connected to the second connection terminal 523.

In some embodiments, the first connection point 531 and/or the second connection point 532 are provided with metal pins that solder-connect the first connection end 522 and the second connection end 523 of the wireless charging coil 52 with the first connection point 531 and the second connection point 532, respectively.

Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of a wireless charging assembly according to an embodiment of the present application, and fig. 5 is a cross-sectional view taken along a direction a-a' in fig. 4. The circuit board 53 further comprises an insulating layer 55 disposed on the surface, a first notch 551 is disposed in the middle of the insulating layer 55, and a first connecting point 531 is disposed in the first notch 551; the circuit board 53 further includes a wiring layer disposed in the middle, wherein one end of the first wire 533 in the wiring layer is electrically connected to the first connection point 531 in the first notch 551, and the other end of the first wire 533 and the second connection point 532 are respectively electrically connected to the wireless charging circuit.

The first notch 551 may have the same shape as the first connection point 531, such as a circle, an ellipse, a square, a rectangle, etc. The first notch 551 may have a shape different from that of the first connection point 531, and the area of the first notch 551 may be smaller than that of the first connection point 531.

The wiring layer is provided in the middle of the circuit board 53, and the thickness of the wiring layer is very small. For example, a metal layer such as copper metal is applied to a substrate and then etched to form a desired wiring layer having a thickness of 15um to 70 um. Moreover, the wiring layer itself exists, the thickness is not increased, and only the wiring of the wiring layer corresponding to the first connection end 522 of the wireless charging coil needs to be designed to the position of the first connection point 531. The thickness of the metal wire of the wireless charging coil generally needs 1mm-2mm, if the first connecting end of the wireless charging coil is led to the outside from the inside through the metal wire, the thickness of the part is 2mm-4mm, the thickness is increased more, and the lightening and thinning of electronic equipment such as a mobile phone are not facilitated.

The surface of the circuit board 53 is provided with an insulating layer 55, the wireless charging coil 52 is disposed on the insulating layer 55, a first notch 551 is formed in the middle of the insulating layer 55, the first notch 551 corresponds to a hollow area in the middle of the wireless charging coil 52, a space enclosed by an innermost circle of metal wires of the coil pattern 521 is the hollow area, a first connection point 531 is arranged in the first notch 551, a first connection end 522 of the wireless charging coil 52, which is arranged in the middle of the coil pattern 521, can be electrically connected with the first connection point 531, a wiring layer is arranged below the insulating layer 55 of the circuit board 53, a first wire 533 is arranged in the wiring layer, the first connection point 531 is one connection point of the first wire 533, the first connection end 522 of the wireless charging coil 52 is connected with one end of the first wire 533 through the first connection point 531, and the other end of the first wire 533 is electrically connected with the wireless charging circuit 54 at other positions of the circuit board 53. The second connection point 532 may be directly electrically connected to the wireless charging circuit 54, that is, the wireless charging circuit 54 is also disposed on the circuit board 53, the wireless charging circuit 54 is directly electrically connected to the second connection point 532, or a pad of a component (e.g., a capacitor, a chip) connected to the wireless charging coil 52 in the wireless charging circuit 54 is the second connection point 532. The first connection point 531 is electrically connected to the wireless charging circuit 54 through the trace of the circuit board 53.

The circuit board 53 may be a multilayer board, and other layers, such as a power layer, a ground layer, and the like, may be disposed between the wiring layer and the insulating layer 55. A through hole is formed between the wiring layer and the first notch 551, a wire is disposed in the through hole, and one end of the first wire 533 in the wiring layer is electrically connected to the first connection end 522 of the wireless charging coil 52 through the wire in the through hole.

The wiring layer may include a plurality of sub-wiring layers, the first wire 533 electrically connected to the wireless charging coil 52 is disposed on a first sub-wiring layer, and other sub-wiring layers may be disposed between the first sub-wiring layer and the insulating layer 55. A through hole is formed between the first wiring layer and the first notch 551, a wire is disposed in the through hole, and one end of the first wire 533 in the first wiring layer is electrically connected to the first connection end 522 of the wireless charging coil 52 through the wire in the through hole.

In some embodiments, a second gap 552 is disposed in the middle of the insulating layer 55, and a second connection point 532 is disposed in the second gap 552; the wiring layer further includes a second wire 534, one end of the second wire 534 is electrically connected to the second connection point 532 in the second gap 552, and the other end of the first wire 533 and the other end of the second wire 534 are respectively electrically connected to the wireless charging circuit 54.

The second notch 552 is similar to the first notch 551, and is used for disposing the second connection point 532 and electrically connecting the second connection point 532 with the second trace 534 of the wiring layer. The second trace 534 and the first trace 533 may be disposed on the same layer, one end of the second trace 534 is electrically connected to the second connection point 532 in the second notch 552, and the other end of the first trace 533 and the other end of the second trace 534 are respectively electrically connected to the wireless charging circuit 54. The first connection point 531 and the second connection point 532 are electrically connected to the wireless charging circuit 54 through the trace of the circuit board 53, that is, the first connection end 522 and the second connection end 523 of the wireless charging coil 52 are electrically connected to the wireless charging circuit 54 through the first trace 533 and the second trace 534 in the circuit board 53, respectively.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating a fourth structure of a wireless charging assembly according to an embodiment of the present disclosure. The first trace 533 includes a first trace 5331 and a second trace 5332, the projection of the first trace 5331 on the circuit board 53 is in the coil pattern 521, the projection of the second trace 5332 on the circuit board 53 is outside the coil pattern 521, and the second trace 5332 is adjacent to the second trace 534.

The first trace 533 is divided into a first segment of trace 5331 and a second segment of trace 5332, a projection of the first segment of trace 5331 on the circuit board 53 is within the coil pattern 521, that is, the first segment of trace 5331 extends from within the coil pattern 521 to outside of the coil pattern 521, a projection of the second segment of trace 5332 on the circuit board 53 is outside of the coil pattern 521, and the second segment of trace 5332 is disposed adjacent to the second trace 534. The arrangement of two ends of the wireless charging coil 52 on the circuit board 53 is facilitated. The second segment of trace 5332 and the second trace 534 can be disposed in parallel. In addition, the first routing line 533 and the second routing line 534 transmit alternating current signals, which causes large interference, and the first routing line 533 and the second routing line 534 are disposed adjacent and parallel to each other, so that the contact area between the alternating current signals and other modules is reduced, the influence on other modules can be reduced, and the wiring is convenient.

Referring to fig. 7, fig. 7 is a schematic view illustrating a fifth structure of a wireless charging assembly according to an embodiment of the present disclosure. The first trace 533 divides the circuit board 53 into at least two regions, the circuit board 53 further includes a functional module 57 thereon, and the functional module 57 includes a plurality of components, and the plurality of components are disposed in the same region.

The first wire 533 extends from the wireless charging circuit 54 to the first connecting point 531, and divides the circuit board 53 into at least two regions, and the circuit board 53 is further provided with other functional modules 57, for example, a smart phone, and the other functional modules 57 may be an audio module or a display module. Each functional module 57 includes a plurality of components, and if a plurality of components of one functional module 57 are disposed on two sides of first trace 533, because the ac signal transmitted by first trace 533 interferes seriously when the components disposed on two sides of first trace 533 perform signal interaction, which affects the performance of functional module 57, therefore, the plurality of components of one functional module 57 are disposed in the same area, that is, disposed on one side of first trace 533, and certainly disposed on one side of second trace 534. The impact of first trace 533 and/or second trace 534 on other functional modules is reduced. The first routing line 533 and the second routing line 534 can be disposed in parallel and adjacent to each other.

If first trace 533 and second trace 534 are separately routed, a plurality of components of functional module 57 are disposed on one side of first trace 533 and second trace 534, that is, a plurality of components of functional module 57 are not disposed on two sides of first trace 533 or second trace 534.

In some embodiments, the first connection end 522 is disposed at the center of the coil pattern 521. The first connection end 522 is facilitated to be separated from the coil pattern 521, and the first connection end 522 is facilitated to be soldered to the first connection point 531. The wires in the coil pattern 521 are adjacently disposed, and are gradually disposed from the outside to the inside in a circle with a decreasing radius, a hollow region is disposed at the center of the coil pattern 521, and the first connection end 522 extends from the end of the coil pattern 521 to the middle of the hollow region without being disposed adjacent to the wires of the coil pattern 521.

The first connection end 522 may be disposed at the center of the coil pattern 521, a position of the wireless charging coil 52 is reserved on the circuit board 53 in advance, and the first connection point 531 and the second connection point 532 corresponding to the first connection end 522 and the second connection end 523 are disposed, the first connection point 531 and the second connection point 532 may be pads, the first connection point 531 serving as a pad is disposed corresponding to the center of the coil pattern 521, a space for welding the first connection end 522 and the first connection point 531 is large, operation is convenient, and the first connection end 522 and the peripheral coil pattern 521 are far away from each other, and solder tin is not easily left.

In some embodiments, an electronic device includes a housing and a wireless charging assembly disposed within the housing, the wireless charging assembly including a wireless charging coil and a circuit board.

The wireless charging coil comprises a section of metal wire, the metal wire comprises a first connecting end and a second connecting end, the metal wire is wound around the first connecting end for at least two turns to form a coil pattern, the first connecting end is arranged in the middle of the coil pattern, and the second connecting end is arranged at the edge of the coil pattern. The circuit board comprises a first connecting point and a second connecting point which are arranged on the surface of the circuit board, the first connecting point is electrically connected with the first connecting end, the second connecting point is electrically connected with the second connecting end, the projection of the first connecting end on the circuit board is superposed with the first connecting point, and the first connecting point and the second connecting point are used for electrically connecting the wireless charging circuit. The electronic device can be a charging device, such as a wireless charging base, and can also be a device to be charged, such as a smart phone.

It should be noted that the wireless charging assembly may also be the wireless charging assembly in any of the above embodiments.

In some embodiments, the electronic device further includes a battery, the wireless charging assembly is electrically connected to the battery, and the wireless charging assembly is configured to charge the battery.

The electronic equipment is the equipment of waiting to charge, and wireless charging coil in the wireless subassembly that charges is used for receiving energy and converts into the electric energy, then charges for the inside battery of electronic equipment. The electronic equipment can be various kinds of equipment with batteries and wireless charging assemblies, such as smart phones and tablet computers. The smart mobile phone is done more and more thin now, and wireless charging coil in the current scheme has two-layer to walk the line, and thickness is thick, is unfavorable for smart mobile phone's frivolousness, and wireless charging coil thickness walks the line for the individual layer in the wireless charging coil subassembly of this embodiment, accords with the requirement of smart mobile phone thickness.

In some embodiments, the electronic device further comprises a control module for controlling the wireless charging coil to convert the electrical energy into electromagnetic energy to be emitted.

The wireless charging coil in the wireless charging assembly is used for converting electric energy into electromagnetic energy and emitting the electromagnetic energy. The electronic equipment is a wireless charging device, such as a wireless charging base and the like.

The wireless charging base can comprise a standby battery and is in wired connection with a power supply through an adapter, or the wireless charging base is directly in wired connection with the power supply. The wireless charging base can charge the standby battery, and when the power supply is out of power, if power is cut off in an urban area, the standby battery can be used for wirelessly charging other devices to be charged.

In some embodiments, the electronic device may also be an accessory, and the wireless charging coil in the wireless charging assembly of the accessory is configured to receive and convert energy into electric energy, and then the accessory is connected to another device, such as a smart phone, in a wired manner, for example, the accessory has a first connection port, and the first connection port is physically connected to a second connection port of the smart phone, and then the accessory converts the energy received by the wireless charging coil of the accessory into electric energy, and then charges the battery of the smart phone through the second connection port of the smart phone through the first connection port of the accessory. The accessory can be used as a rear shell or a front shell or a support or a protective shell of a smart phone. Of course, the fitting may be used in other forms.

As shown in fig. 8, the device to be charged 22 cooperates with the wireless charging device 31 to perform wireless charging, the wireless charging device 31 is connected to a power supply, such as commercial power, through an adapter 41, the adapter 41 converts the commercial power, such as 220V, into a voltage suitable for the wireless charging device 31, and the wireless charging device 31 includes a voltage conversion circuit 311, a wireless transmission circuit 312, and a first control module 313. The device to be charged 22 includes a wireless receiving circuit 221, a buck converter circuit assembly 222, a battery 223, and a second control module 224.

The wireless charging device 31 may include a voltage conversion circuit 311, a wireless transmission circuit 312, and a first control module 313. The voltage conversion circuit 311 is electrically connected to the adapter 41 and the wireless transmission circuit 312, and the wireless transmission circuit 312 transmits energy to charge the device 22 to be charged. The first control module 313 is electrically connected 312 with the voltage conversion circuit 311 and the wireless transmission circuit, respectively. The voltage conversion circuit 311 is configured to perform voltage conversion on a power source input to the wireless charging device 31, for example, convert an input commercial power (e.g., 220V) into a suitable voltage (e.g., 15V, 12V, 9V, etc.). The wireless transmission circuit 312 is used to convert the electrical energy into electromagnetic energy and then transmit the electromagnetic energy. The first control module 313 is configured to control the voltage conversion circuit 311 and the wireless transmission circuit 312 to be turned on and off, and is further configured to detect whether a return message of the device to be charged 322 is received, and then control the voltage conversion circuit 311 and the wireless transmission circuit 312 to be turned on and off according to the return message. The return information may include battery information of the device 322 to be charged, such as whether the battery is fully charged, and the return information may also include charging type information of the charging device 322.

The device to be charged 22 includes a wireless receiving circuit 221, a buck converter circuit 222 and a battery 223 electrically connected in sequence, and the device to be charged 22 further includes a second control module 224 electrically connected to the wireless receiving circuit 221 and the buck converter circuit 222, respectively. The wireless receiving circuit 221 is configured to receive electromagnetic energy transmitted by the wireless transmitting circuit 312 of the wireless charging device 31 and convert the electromagnetic energy into electric energy. The buck converter 222 is used to buck the electromagnetic energy into electrical energy (e.g., from 15V to 9V, 9V to 5V, etc.). Specifically, the high-voltage low current output from the wireless receiving circuit 221 is converted into a low-voltage large current. The second control module 224 may be used to control the wireless receiving circuit 221 and the buck converter circuit 222 to be turned on and off. It can also be used to detect whether the information sent by the wireless charging device 31 is received, and then control the wireless receiving circuit 221 and the buck converter circuit 222 to turn on and off according to the received information.

In one embodiment, during the wireless charging process of the device to be charged, the wireless charging device performs bidirectional communication with the device to be charged. Thus, the wireless charging apparatus may determine charging parameters (e.g., charging voltage/charging current) and charging modes (e.g., charging modes employing different charging powers) with the device to be charged.

In one embodiment, the wireless charging device and the equipment to be charged perform bidirectional communication, and acquire the voltage and/or current of a battery of the equipment to be charged; and adjusts the transmit power of the wireless transmit circuitry 312 based on the voltage and/or current of the battery.

Optionally, in some embodiments, the communication information between the wireless charging apparatus and the device to be charged includes at least one of the following information: temperature information of the battery; information indicative of a peak or average value of an output voltage and/or an output current of the wireless receiving circuit; entering indication information of overvoltage protection or overcurrent protection; power transfer efficiency information indicating power transfer efficiency between the wireless transmission circuit and the wireless reception circuit.

Optionally, in some embodiments, the communication information includes power transfer efficiency information, and the wireless charging apparatus may determine an adjustment magnitude of the transmission power of the wireless transmission circuit according to the power transfer efficiency information.

Optionally, in some embodiments, the wireless charging apparatus supports a first wireless charging mode and a second wireless charging mode, where a charging speed of the device to be charged by the wireless charging apparatus in the first wireless charging mode is faster than a charging speed of the device to be charged by the wireless charging apparatus in the second wireless charging mode.

Optionally, in some embodiments, the wireless charging apparatus communicates with the device to be charged to negotiate for wireless charging using the first wireless charging mode or the second wireless charging mode.

Optionally, in some embodiments, the wireless charging apparatus communicating with the device to be charged to negotiate for wireless charging using the first wireless charging mode or the second wireless charging mode may include: the wireless charging device is controlled to charge the equipment to be charged by using the first wireless charging mode under the condition that the handshake communication is successful, and the wireless charging device is controlled to charge the equipment to be charged by using the second wireless charging mode under the condition that the handshake communication is failed.

In wireless charging, a wireless charging coil is required for both the wireless transmitting circuit 312 and the wireless receiving circuit 221, and the wireless charging coil can be used for converting electric energy into electromagnetic energy or converting electromagnetic energy into electric energy.

Electronic devices used in embodiments of the present application may include, but are not limited to, devices configured to receive/transmit communication signals via a wireline connection (e.g., via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network) and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a digital video broadcasting-handheld (DVB-H) network, a satellite network, an amplitude modulation-frequency modulation (AM-FM) broadcast transmitter, and/or another communication terminal). Terminals that are arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals", and/or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communication System (PCS) terminals that may combine a cellular radiotelephone with data processing, facsimile and data communication capabilities; personal Digital Assistants (PDAs) that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver.

The wireless charging apparatus of the embodiment of the present application includes an adapter, and the adapter includes a control unit, and the embodiment of the present application does not specifically limit the communication content between the control unit of the adapter and an electronic device (such as a smart phone), and the control unit controls the output of the adapter in the second charging mode, for example, the control unit may communicate with the electronic device (such as a smart phone), interact with the current voltage or the current capacity of a battery in the electronic device (such as a smart phone), and adjust the output voltage or the output current of the adapter based on the current voltage or the current capacity of the battery. The communication content between the control unit and the electronic device (such as a smart phone) and the control manner of the control unit for the output of the adapter in the second charging mode are described in detail below with reference to specific embodiments.

Optionally, in some embodiments, the wireless charging apparatus supports a first charging mode and a second charging mode, and the charging speed of the device to be charged by the wireless charging apparatus in the second charging mode is faster than the charging speed of the device to be charged by the wireless charging apparatus in the first charging mode, and the wireless charging apparatus performs bidirectional communication with the device to be charged to control the output power of the wireless charging apparatus, including: and performing bidirectional communication with the equipment to be charged so as to control the output power of the wireless charging device in the second charging mode.

The embodiment of the present application does not limit the specific type of the wireless charging device, for example, the wireless charging device may be a wireless charging base, and may also be other types of devices capable of converting an electrical signal into an electromagnetic wave, so as to implement wireless charging.

The number and type of the external interfaces of the wireless charging device are not particularly limited in the embodiments of the present application. In some embodiments, the wireless charging apparatus may include an external interface for both receiving charging power provided by an external device and transmitting data provided by the external device. In other embodiments, the wireless charging apparatus may include multiple external interfaces, for example, the wireless charging apparatus includes two external interfaces, one for connecting with the electronic device and the other for connecting with the adapter. The external interface of the wireless charging apparatus may include at least one of a serial port, a Universal Serial Bus (USB), and the like, for example. The USB interface may be, for example, a USB 2.0 interface, a USB3.0 interface, or a TYPE-C interface.

The embodiment of the present application does not specifically limit the wireless charging method. For example, the wireless charging may be based on at least one of magnetic coupling, magnetic resonance, and radio waves.

In some implementations, the wireless charging mode may be based on a conventional wireless charging standard for wireless charging. For example, the wireless charging mode may be based on one of the following standards: QI standard, A4WP standard, and PMA standard.

The device to be charged further comprises a wireless communication module, and the wireless communication module is used for transmitting data stored in the wireless charging device or the second electronic device connected with the wireless charging device to the electronic device through a wireless link or transmitting the data stored in the device to be charged to the wireless charging device or the second electronic device connected with the wireless charging device through the wireless link in the process of wirelessly charging the device to be charged by the wireless charging device. The wireless charging device may have a memory built therein for storing data transmitted by the electronic device. The wireless charging device can also be connected with a second electronic device, the second electronic device can be a computer, a mobile hard disk and other devices with a storage function, the wireless charging device can be in wired connection with the second electronic device and also can be in wireless connection (such as Bluetooth connection, WIFI connection and near-field wireless connection), and the wireless communication module stores the data of the electronic device into the second electronic device through the wireless charging device.

The device to be charged and the wireless charging apparatus can communicate with each other through the short-range wireless communication system. Specifically, the short-range wireless communication system includes a transmitting end device and a receiving end device. The sending end device and the receiving end device may implement non-contact high-speed data transmission, and optionally, an Extremely High Frequency (EHF) antenna is encapsulated in an Integrated Circuit (IC) chip of the sending end device, so that the sending end device may implement high-speed data wireless transmission (e.g., a transmission speed up to 6 GB/s) based on a high carrier frequency (e.g., 60 GHz). Optionally, the EHF antenna may be packaged in an IC chip of the receiving end device, so that bidirectional communication between the transmitting end device and the receiving end device may be implemented. Optionally, the sending end device and the receiving end device realize wireless data transmission through electromagnetic signals. The sending end equipment is arranged on the equipment to be charged, and the receiving end equipment is arranged on the wireless charging device. The sending end equipment is arranged on the wireless charging device, and the receiving end equipment is arranged on the equipment to be charged. Also, the sending end device and the receiving end device may be integrated together, and initiate the sending function or the receiving function under different communication conditions.

It should be understood that the high carrier frequency-based near field communication has the advantages of low power consumption, small size, high transmission rate, non-contact transmission and the like, can also realize the function of a plug-and-play module, can greatly improve the signal integrity, support more flexible system realization, reduce the standby power consumption, increase the bandwidth amplitude and the safety of data transmission, and is compatible with the support of high-speed video signals and the like.

It should be understood that the high carrier frequency may be a carrier frequency that enables high speed wireless transmission of data. The high carrier frequency may be a specific carrier frequency, or may be a carrier frequency band, for example, 30GHz to 300GHz, which is not specifically limited in this embodiment of the present application.

Optionally, the high carrier frequency is 60 GHz.

Optionally, the transmitting end device includes an IC chip in which the EHF antenna is packaged.

For example, the sending end device includes an independent transmission chip, for example, the independent transmission chip is an IC chip in which an EHF antenna is packaged, and the transmission power of the independent transmission chip may be a high frequency of 60GHz, so that fast transmission of data between the sending end device and the receiving end device (e.g., a transmission speed of 6 GB/s) may be achieved.

In some embodiments, the device to be charged communicates bi-directionally with the wireless charging apparatus through the wireless communication module. The wireless charging apparatus may include an adapter, and the wireless communication module is configured to perform bidirectional communication with the wireless charging apparatus to negotiate a charging mode between the adapter and the device to be charged, that is, whether the adapter and the device to be charged are in a first charging mode or a second charging mode.

The embodiment of the application does not specifically limit the type of data transmitted between the wireless charging device and the second electronic device. For example, the wireless charging device may transmit at least one of the following data: data in USB protocol format, data in DP protocol format, and data in MHL protocol format.

Further, in some embodiments, the wireless charging apparatus may be configured to communicate data in a plurality of protocol formats with the second electronic device. For example, the wireless charging device may support transmission of data in both the USB protocol format and the MHL protocol format.

The embodiment of the present application does not limit the specific structure of the wireless charging device, and any circuit structure that can implement the function of the wireless charging device can be used in the embodiment of the present application. Taking fig. 9 as an example, the wireless charging device 10 may include: a control unit 121 (which may be an MCU, for example), a wireless charging unit 122, and a wireless data transmission unit 13, wherein the control unit 121 and the wireless charging unit 122 may jointly implement a corresponding function of the wireless charging control unit 12. Further, the wireless data transmission function of the wireless data transmission unit 13 may also be implemented under the control of the control unit 121. Further, the control unit 121 may also communicate and/or control information interaction with the external device through the external interface 11. In other words, all control-related functions inside the wireless charging device 10 may be integrated in the control unit 121 and controlled by the control unit 121 in a unified manner, but the embodiment of the present application is not limited thereto, and a plurality of control units may be arranged in the wireless charging device 10 to implement different control functions respectively.

Specifically, the control unit 121 may communicate with the electronic device 30 to identify the type of the electronic device 30 and determine a power level matching the device to be charged 30. Taking the example that the input power of the external interface 11 is dc power, the wireless charging unit 122 may include a conversion circuit and a coil, and the conversion circuit may be configured to convert the dc power input by the external interface 11 into ac power, and the coil may be configured to convert the ac power into electromagnetic waves and transmit the electromagnetic waves to the receiving end. The device to be charged is communicated with the wireless charging device, and information such as the type and the power grade of the device to be charged is sent to the wireless charging device so as to control the output power of the wireless charging device.

Taking the second electronic device 20 as a host device, the control unit 121 as an MCU, and the wireless charging apparatus 10 as a wireless charging base as an example, when the host device is connected to the wireless charging base through an external interface of the wireless charging base, the MCU identifies the power that the host device can provide and the type of data interaction supported by the host device (e.g., data in USB 2.0 format, data in USB3.0 format, image data, audio/video data, etc.). The wireless charging apparatus 10 may then provide a plurality of power levels, such as a low power level (e.g., 5W) and a medium power level (e.g., 10W and/or 15W), to the device to be charged according to the rules defined by conventional wireless charging standards (e.g., QI or A4WP, etc.), based on the power that the host device is capable of providing. Of course, if the host device can provide more power, the embodiments of the present application may also extend the conventional wireless charging standard (e.g., QI or A4WP, etc.), thereby providing a higher power level to the device to be charged. The device to be charged may send its own power level and control commands to the wireless charging base and/or the host device to cause the wireless charging base and/or the host device to determine the power level.

It should be noted that, the above description is given by taking the wireless charging apparatus 10 as an example for performing wireless charging based on a conventional wireless charging standard, but the embodiment of the present application is not limited thereto, and the wireless charging apparatus 10 may also perform wireless charging based on a customized private standard or protocol, for example, identify the type of the electronic device according to the customized private standard or protocol, match the power level of the device to be charged, and the like.

In some implementations, the wireless charging apparatus 10 can be connected to the adapter through the external interface 11, and wirelessly charge the device to be charged 30 according to the output power of the adapter. In other implementations, the wireless charging device 10 may be used to act as an adapter, i.e., integrating the functionality of the adapter inside the wireless charging device 10. The adapter can be a common adapter in the related art, and can also be a controllable adapter for outputting power provided by the embodiment of the application.

In the case of wireless charging, a general adapter in the related art and an adapter with controllable output power provided by the embodiment of the present application are described in detail. As indicated above, in order to be able to use the adapter in the field of wireless charging, a first possible implementation is to connect the adapter to a wireless charging device, so as to wirelessly charge the electronic device based on the output power of the adapter. In this implementation, the main function of the wireless charging apparatus is to convert the output power of the adapter into a wireless power signal and then transmit the wireless power signal to the electronic device. A second possible implementation manner is to directly use the wireless charging apparatus as an adapter (i.e. integrate the function of the adapter inside the wireless charging apparatus), and use the output power of the wireless charging apparatus to charge the electronic device. In such an implementation, the wireless charging device needs to be responsible for converting the alternating current through operations such as voltage transformation and rectification, and also for wirelessly transmitting the converted voltage and current to the electronic device, so as to wirelessly charge the electronic device. The above two implementations are respectively described in detail below with reference to specific embodiments.

Taking the first implementation as an example, as shown in fig. 10, the external interface 11 may be connected to the adapter 40. When the external interface 11 is connected to the adapter 40, the wireless charging device 10 may be mainly used for wireless charging, and the wireless data transmission unit 13 may be in an idle state or may transmit some parameter information related to wireless charging.

The embodiment of the present application does not specifically limit the type of the adapter 40. For example, the adapter 40 may be a general adapter provided in the related art. As another example, the adapter 40 may be an adapter capable of controlling its output power, which is provided in the embodiments of the present application, and this type of adapter usually needs to perform two-way communication with the outside world to negotiate or control the output power of the adapter.

Taking the adapter 40 as an ordinary adapter for example, when the wireless charging device 10 recognizes that the external interface 11 is connected to the ordinary adapter, the wireless charging control unit 12 may provide one or more power levels, such as a low power level (e.g., 5W) and a medium power level (e.g., 10W and/or 15W), for the device to be charged based on rules defined by the wireless charging standard (e.g., QI, A4WP, etc.). When the wireless charging apparatus 10 detects an electronic device, it may communicate based on a wireless charging protocol provided by a wireless charging standard to identify the type of electronic device and match the power class of the electronic device. The wireless charging dock may then wirelessly charge the electronic device based on the matched power level.

Taking the adaptor 40 as an example of the adaptor with adjustable output power provided by the embodiment of the present application, the wireless charging control unit 12 in the wireless charging apparatus 10 may perform bidirectional communication with the adaptor to control (or negotiate) the output power of the adaptor, and wirelessly charge the electronic device 30 according to the output power of the adaptor. As can be seen from the foregoing, the adaptor with controllable output power provided in the embodiment of the present application can provide larger output power compared with the common adaptor provided in the related art, thereby providing a basis for fast charging in the field of wireless charging.

When the wireless charging device 10 detects that the external interface 11 is connected to the adapter, the wireless charging device 10 can perform bidirectional communication with the adapter. If the adapter is capable of supporting two-way communication, it is indicated that the adapter is the controllable output power adapter described above. At this time, the wireless charging control unit 12 in the wireless charging apparatus 10 may provide one or more standard power levels, such as a low power level (e.g., 5W) and a medium power level (e.g., 10W and/or 15W), to the device to be charged based on rules defined by the wireless charging standard (e.g., QI, A4WP, etc.). Alternatively, the wireless charging control unit 12 may extend a conventional wireless charging standard (e.g., QI, A4WP, etc.) to enable it to support higher power levels. In this way, when the wireless charging apparatus 10 detects that the external interface 11 is connected to the adapter whose output power is controllable, a higher power level can be provided to the device to be charged.

Optionally, in some embodiments, the wireless charging apparatus 10 may perform bidirectional communication with the device to be charged according to the bidirectional communication protocol provided in the embodiments of the present application (see the above-described bidirectional communication procedure and instruction set between the adapter and the device to be charged in detail) to provide a medium power level, or even a higher power level.

Taking the wireless charging device 10 as a wireless charging base as an example, when the device to be charged is connected to the wireless charging base, the wireless charging base can perform bidirectional communication with the device to be charged according to the bidirectional communication protocol provided in the embodiment of the present application, so as to identify the type of the device to be charged, and perform power matching on the device to be charged. Then, the wireless charging base can wirelessly charge the device to be charged based on the matched power. It should be noted that the matching process of power may include matching of current magnitude and matching of voltage magnitude, and taking the matching power equal to 10W as an example, the voltage and the current may be 5V and 2A, respectively, or the voltage and the current may be 10V and 1A, respectively.

In the embodiment of the present application, the content of communication between the wireless charging control unit 12 and the adapter is not particularly limited as long as the purpose of controlling or negotiating the output power of the adapter can be achieved. The following exemplifies the communication contents between the adapter and the wireless charging control unit 12 with reference to a specific embodiment.

Optionally, in some embodiments, the adapter 40 is an adapter that supports a first charging mode and a second charging mode, and the adapter 40 charges the electronic device 30 faster in the second charging mode than in the first charging mode than the adapter 40 charges the electronic device 30 in the first charging mode, the bi-directional communication with the adapter 40 to control the output power of the adapter 40 may include: bi-directional communication is made with the adapter 40 to control the output power of the adapter 40 in the second charging mode.

It should be noted that the output power of the adapter 40 in the second charging mode can be actively determined by the wireless charging device 10; alternatively, it may be determined by the wireless charging apparatus 10 with reference to the state or capability of the terminal to be charged; or may be determined by the device to be charged 30, in which case the wireless charging apparatus 10 is primarily responsible for the transfer of information or instructions between the adapter 40 and the device to be charged 30.

Alternatively, in some embodiments, the wireless charging control unit 12 may bi-directionally communicate directly with the adapter 40 to negotiate or control the output power of the adapter in the second charging mode. For example, the wireless charging control unit 12 may communicate with the adaptor 40 in both directions using the two-way communication protocol provided in the embodiments of the present application (see the two-way communication procedure and instruction set between the adaptor and the electronic device described above).

Optionally, in some embodiments, the bidirectional communication with the adapter 40 to control the output power of the adapter 40 in the second charging mode may include: bi-directional communication is performed with the adapter 40 to negotiate the charging mode of the adapter 40.

For example, the adapter 40 may send a first instruction to the wireless charging control unit 12 asking the wireless charging control unit 12 whether to turn on the second charging mode; the wireless charging control unit 12 sends a reply instruction of the first instruction to the adapter, where the reply instruction of the first instruction is used to indicate whether the wireless charging control unit 12 agrees to turn on the second charging mode. In the case where the reply instruction of the first instruction indicates that the wireless charging control unit 12 agrees to turn on the second charging mode, the adapter turns on the second charging mode.

The embodiment of the present application does not specifically limit the manner in which the wireless charging control unit 12 determines whether to start the second charging mode. For example, the wireless charging control unit 12 may directly agree to turn on the second charging mode; for another example, the wireless charging control unit 12 may send the first instruction to the electronic device 30, and the device to be charged 30 determines whether to start the second charging mode; for another example, the wireless charging control unit 12 may determine whether to turn on the second charging mode according to the state of the device to be charged 30 (e.g., whether the device to be charged supports the second charging mode, and/or the current charge of the device to be charged, etc.).

Optionally, in some embodiments, the bidirectional communication with the adapter 40 to control the output power of the adapter 40 in the second charging mode may include: bi-directional communication is made with the adapter 40 to control the output voltage of the adapter in the second charging mode.

For example, the adapter 40 may send a second instruction to the wireless charging control unit 12 asking whether the current output voltage of the wireless charging control unit 12 is appropriate; the wireless charging control unit 12 may send a reply instruction of a second instruction to the adapter 40, where the reply instruction of the second instruction is used for the adapter 40 to adjust its output voltage according to the reply instruction of the second instruction, and the current output voltage is appropriate, higher, or lower.

The embodiment of the present application does not specifically limit the manner in which the wireless charging control unit 12 determines the output voltage of the adapter in the second charging mode. Alternatively, in some embodiments, the wireless charging control unit 12 may actively determine the output voltage of the adapter in the second charging mode. For example, after the wireless charging control unit 12 recognizes that the adapter is an adapter whose output power is controllable, the output voltage of the adapter 40 is directly adjusted to a preset higher gear. Alternatively, in other embodiments, the wireless charging control unit 12 may communicate with the device to be charged 30 and control the output voltage of the adapter in the second charging mode based on the feedback information of the device to be charged 30.

Optionally, in some embodiments, the performing bidirectional communication with the adapter to control the output power of the adapter in the second charging mode may include: bi-directional communication is performed with the adapter to control the output current of the adapter in the second charging mode.

For example, the adapter 40 may send a third instruction to the wireless charging control unit 12 asking the wireless charging control unit 12 for the current value of the output current of the adapter, or the maximum charging current supported by the wireless charging device; the wireless charging control unit 12 may send a reply instruction of a third instruction to the adapter 40, the reply instruction of the third instruction being used to indicate the current value of the output current of the adapter, or the maximum charging current supported by the wireless charging device, so that the adapter 40 adjusts its output current according to the reply instruction of the third instruction.

The embodiment of the present application does not specifically limit the manner in which the wireless charging control unit 12 determines the output current of the adapter in the second charging mode. Alternatively, in some embodiments, the wireless charging control unit 12 may actively control the output current of the adapter in the second charging mode. For example, after the wireless charging control unit 12 recognizes that the adapter is an adapter whose output power is controllable, the output current of the adapter is directly adjusted to a preset higher gear. Alternatively, in other embodiments, the wireless charging control unit 12 may communicate with the device to be charged 30 and control the output current of the adapter in the second charging mode based on the feedback information of the device to be charged 30.

It should be noted that, in the embodiment of the present application, the process of wirelessly charging the device to be charged 30 by the wireless charging control unit 12 according to the output power of the adapter 40 is not specifically limited. In some embodiments, electronic device 30 may be wirelessly charged along with a wireless charging protocol provided by a conventional wireless charging standard, such as QI or A4 WP. In other implementations, the two-way communication protocol provided by the embodiments of the present application (see the above-described two-way communication process and instruction set between the adapter and the electronic device) may be used to wirelessly charge the device 30 to be charged.

Specifically, the above wirelessly charging the device to be charged 30 according to the output power of the adapter 40 may include: two-way communication with the device to be charged 30 to inquire whether the device to be charged 30 agrees to turn on the second charging mode; and under the condition that the device to be charged 0 agrees to start the second charging mode, wirelessly charging the device to be charged 30 according to the output power of the adapter 40 in the second charging mode.

The communication process of the traditional wireless charging process only comprises the identification and power level confirmation process of the electronic equipment, and the embodiment of the application is based on the customized bidirectional communication protocol, and firstly identifies the type of the electronic equipment (namely whether the electronic equipment is an adapter supporting the second charging mode), so that the bidirectional communication protocol provided by the embodiment of the application is applied to the field of wireless charging, and a foundation is provided for quick charging in the field of wireless charging.

Optionally, in some embodiments, the wireless charging control unit 12 may also be configured to perform bidirectional communication with the device to be charged 30 during the wireless charging of the device to be charged 30 by the wireless charging control unit 12 according to the output power of the adapter 40, so as to adjust the output power of the wireless charging control unit 12.

After the power matching of the electronic device is completed in the conventional wireless charging process, the output power of the wireless charging control cannot be adjusted, a communication protocol between the wireless charging control unit 12 and the device to be charged 30 is modified in the embodiment of the application, and the bidirectional communication between the wireless charging control unit 12 and the device to be charged 30 is maintained in the wireless charging control, so that the output power of the wireless charging control unit 12 can be adjusted in real time according to actual needs, and the flexibility of the wireless charging process is improved.

Taking the second implementation manner (i.e., the implementation manner in which the wireless charging device 10 directly acts as an adapter) as an example, the wireless charging control unit 12 may also be used to receive alternating current; converting an input power of the alternating current into an output power of the wireless charging device 10; and wirelessly charging the device to be charged 30 according to the output power of the wireless charging device 10.

The function of the adapter is integrated in the wireless charging device, so that the number of devices or devices needing to be connected in the wireless charging process can be reduced, and the implementation is simplified.

It should be understood that the functions of the common adapter may be integrated into the wireless charging device 10, and the functions of the adjustable output power adapter provided in the embodiments of the present application may also be integrated into the wireless charging device 10. Taking the function of integrating the adaptor with adjustable output power provided by the embodiment of the present application into the wireless charging apparatus 10 as an example, the wireless charging apparatus 10 can perform bidirectional communication with a device to be charged, so as to control the output power of the wireless charging apparatus 10. The bidirectional communication mechanism between the wireless charging apparatus 10 and the device to be charged may adopt a communication mechanism similar to the bidirectional communication mechanism (see above specifically) between the adapter with adjustable output power and the electronic device in the wired charging process, except that the charging power between the wireless charging apparatus 10 and the device to be charged is transmitted in a wireless manner. The communication mechanism and the charging control manner between the wireless charging apparatus 10 and the device to be charged are described in detail below with reference to specific embodiments.

Optionally, in some embodiments, the wireless charging apparatus 10 may support a first charging mode and a second charging mode, and the wireless charging apparatus 10 in the second charging mode charges the device to be charged 30 faster than the wireless charging apparatus 10 in the first charging mode, and bidirectionally communicating with the device to be charged 30 to control the output power of the wireless charging apparatus 10 may include: bi-directional communication is performed with the device to be charged 30 to control the output power of the wireless charging apparatus 10 in the second charging mode.

Optionally, in some embodiments, bi-directionally communicating with the device to be charged 30 to control the output power of the wireless charging apparatus 10 in the second charging mode may include: bi-directional communication is performed with the device to be charged 30 to negotiate a charging mode of the wireless charging apparatus 10.

Optionally, in some embodiments, bi-directionally communicating with the device to be charged 30 to control the output power of the wireless charging apparatus 10 in the second charging mode may include: bi-directional communication is performed with the device to be charged 30 to control the output voltage of the wireless charging apparatus 10 in the second charging mode.

Optionally, in some embodiments, bi-directionally communicating with the device to be charged 30 to control the output power of the wireless charging apparatus 10 in the second charging mode may include: bi-directional communication is performed with the device to be charged 30 to control the output current of the wireless charging apparatus 10 in the second charging mode.

The functions of the wireless charging device 10 are described in detail above with reference to different embodiments, but the embodiments of the present application are independent of each other.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The wireless charging coil, the wireless charging assembly and the electronic device provided by the embodiments of the present application are described in detail above, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the above embodiments is only used to help understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The utility model provides a wireless charging coil, its characterized in that includes first link and second link, wherein, first link sets up the centre of wireless charging coil, the second link sets up the edge of wireless charging coil, first link is used for the tie point on the direct connect circuit board.

2. The wireless charging coil of claim 1, wherein the wireless charging coil comprises at least two turns of wire, wherein a gap is disposed between two adjacent turns of wire, and wherein a non-conductive material is disposed in the gap.

3. The wireless charging coil of claim 2, wherein the upper surface of any of the at least two turns of wire are in the same plane.

4. The wireless charging coil of claim 1, wherein the wireless charging coil comprises at least two turns of wire, the wire comprises a metal wire and a protective layer wrapping the metal wire, the protective layer is made of a non-conductive material, and the upper surfaces of any one of the at least two turns of wire are on the same plane.

5. The wireless charging coil of claim 4, wherein adjacent two of the at least two turns of wire are spaced apart.

6. The wireless charging coil of claim 4, wherein a circle of wire with a smallest radius in the wireless charging coil defines a receiving area, and the first connection end is disposed in the receiving area.

7. A wireless charging assembly, comprising:

8. The wireless charging assembly of claim 7, wherein the circuit board further comprises an insulating layer disposed on the surface, a first gap is disposed in the middle of the insulating layer, and the first connecting point is disposed in the first gap;

the circuit board further comprises a wiring layer arranged in the middle, one end of a first wire in the wiring layer is electrically connected with the first connecting point in the notch, and the other end of the first wire and the second connecting point are respectively electrically connected with the wireless charging circuit.

9. The wireless charging assembly of claim 8, wherein a second gap is formed in the middle of the insulating layer, and the second connection point is formed in the second gap;

the wiring layer further comprises a second wire, one end of the second wire is electrically connected with a second connection point in the second gap, and the other end of the first wire and the other end of the second wire are respectively electrically connected with the wireless charging circuit.

10. The wireless charging assembly of claim 9, wherein the first trace comprises a first trace and a second trace, the first trace projects on the circuit board within the wireless charging coil, the second trace projects on the circuit board outside the wireless charging coil, and the second trace is disposed adjacent to the second trace.

11. The wireless charging assembly of any one of claims 8-10, wherein the first trace divides the circuit board into at least two regions, the circuit board further comprising a functional module thereon, the functional module comprising a plurality of components, the plurality of components being disposed in the same region.

12. The wireless charging assembly of claim 7, wherein the first connection point is a solder pad, and the first connection point is soldered to the first connection end;

and/or

The second connecting point is a bonding pad and is connected with the second connecting end in a welding mode.

13. An electronic device, comprising a housing and a wireless charging assembly, wherein the wireless charging assembly is arranged in the housing, and the wireless charging assembly comprises a wireless charging coil and a circuit board;

14. The electronic device of claim 13, further comprising a battery, wherein the wireless charging assembly is electrically connected to the battery, and wherein the wireless charging assembly is configured to charge the battery.

15. The electronic device of claim 13, further comprising a control module configured to control the wireless charging coil to convert electrical energy into electromagnetic energy for emission.