WO2024139431A1 - Charging receiving assembly, device accessory, device accessory group and electronic assembly - Google Patents

Abstract

A charging receiving assembly (100), a device accessory (200), a device accessory group (300) and an electronic device (400), which can reduce the blind zone of a charging magnetic field and improve the charging efficiency. The charging receiving assembly (100) comprises an energy storage circuit (10), a first coil (11) and a second coil (12). The first coil (11) is used for being coupled to an antenna radiator (401) of a charging transmitting assembly (40), so as to receive an electromagnetic wave signal transmitted by the antenna radiator (401) and to generate an oscillating magnetic field. The second coil (12) and the first coil (11) are mutually inductive, and the second coil (12) is electrically connected to the energy storage circuit (10), and the second coil (12) is used for generating an induced current under the action of the oscillating magnetic field, so as to charge the energy storage circuit (10). The device accessory (200) comprises an accessory main body (21) and a charging receiving assembly (100). The device accessory group (300) comprises a first accessory main body (31), a second accessory main body (32), and a charging receiving assembly (100). An electronic assembly (1000) comprises an electronic device (400) and a device accessory group (300).

Description

Charging receiving components, equipment accessories, equipment accessory groups and electronic components

This application claims priority to the Chinese patent application filed with the China Patent Office on December 28, 2022, with application number 202211694637.6, and application name "Charging receiving component, device accessories, device accessory group and electronic component", all of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of wireless charging technology, and in particular to a charging receiving component, a device accessory, a device accessory group and an electronic component.

Background technique

Existing wireless charging technology solutions are mainly used in "large" electronic products such as tablets and laptops. The reason is that the current wireless charging technology uses electromagnetic induction, that is, it uses the magnetic flux generated by TX (transmitter) on RX (receiver) to transmit power. The magnetic field strength is inversely proportional to the distance. The disadvantage is that the transmission distance is short and the charging efficiency is greatly affected by the degree of displacement of the placement. "Small" electronic products such as mobile phones do not have the space to place TX and RX together without affecting the user experience. In related technologies, the RX of such electronic products is placed in the magnetic field blind spot of TX, resulting in low charging efficiency or even failure to charge.

Summary of the invention

The present application provides a charging receiving component, a device accessory, a device accessory group and an electronic component that can reduce the blind area of the charging magnetic field.

In a first aspect, the present application provides a charging receiving component, comprising:

Energy storage circuit;

A first coil, the first coil is used to couple with the antenna radiator of the charging and transmitting component to receive the electromagnetic wave signal emitted by the antenna radiator and generate an oscillating magnetic field; and

The second coil has mutual inductance with the first coil and is electrically connected to the energy storage circuit. The second coil is used to generate an induced current under the action of the oscillating magnetic field to charge the energy storage circuit.

In a second aspect, the present application also provides a device accessory, including an accessory body and the charging receiving component, wherein the accessory body can be installed on an electronic device, and the charging receiving component is arranged on the accessory body.

In the third aspect, the present application also provides a device accessory group, including a first accessory body, a second accessory body and the charging receiving component, the first accessory body can be installed on an electronic device, the second accessory body can be installed on the first accessory, the first coil is arranged on the first accessory body, and the first coil and the first accessory body form a first device accessory, the energy storage circuit and the second coil are arranged on the second accessory body, and the energy storage circuit, the second coil and the second accessory body form a second device accessory.

In a fourth aspect, the present application also provides an electronic component, including an electronic device and the device accessory group, wherein the electronic device includes a charging and transmitting component, the charging and transmitting component includes a power supply circuit and an antenna radiator electrically connected to the power supply circuit, and the antenna radiator is used to transmit electromagnetic wave signals.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

FIG1 is a schematic diagram of the architecture of a charging receiving component provided in an embodiment of the present application;

FIG2 is a schematic diagram of the architecture of a charging system formed by a charging receiving component and a charging transmitting component shown in FIG1 ;

FIG3 is a schematic diagram of the structure of the charging receiving component shown in FIG2 further including a rectifier circuit;

FIG4 is a schematic diagram of the structure of the charging receiving component shown in FIG3 further including a magnetic core;

FIG5 is a schematic diagram of a structure in which at least part of the second coil of the charging receiving assembly shown in FIG4 surrounds the magnetic core once, and at least part of the first coil surrounds the second coil once;

FIG6 is a schematic diagram of a structure in which a first coil surrounds a first magnetic portion of a magnetic core and a second coil surrounds a second magnetic portion of a magnetic core in a charging receiving assembly shown in FIG4 ;

FIG7 is a schematic diagram of a structure in which the first coil in the charging receiving assembly shown in FIG6 includes a first coil portion and a second coil portion formed by a first conductive wire;

FIG8 is a schematic diagram of a structure in which the first coil portion of the charging receiving assembly shown in FIG7 includes a first sub-coil portion, a second sub-coil portion and a third sub-coil portion connected in sequence;

FIG9 is a schematic diagram of the structure of coupling between the first sub-coil portion of the first coil portion in the charging receiving component shown in FIG8 and the antenna radiator of the charging transmitting component;

FIG10 is a schematic diagram of a structure in which the first sub-coil portion and the second sub-coil portion of the first coil portion in the charging receiving component shown in FIG8 are coupled with the antenna radiator of the charging transmitting component;

FIG11 is a schematic diagram of a structure in which the first sub-coil portion, the second sub-coil portion and the third sub-coil portion of the first coil portion in the charging receiving component shown in FIG8 are coupled with the antenna radiator of the charging transmitting component;

FIG12 is another schematic diagram of a structure in which the first sub-coil portion, the second sub-coil portion and the third sub-coil portion of the first coil portion in the charging receiving component shown in FIG8 are all coupled with the antenna radiator of the charging transmitting component;

FIG13 is a schematic diagram of the structure of the charging receiving component shown in FIG11 further including a first matching circuit;

FIG14 is a schematic diagram of a structure in which the first matching circuit of the charging receiving assembly shown in FIG13 is electrically connected between two ends of the first wire;

FIG15 is a schematic structural diagram of the first matching circuit of the charging receiving assembly shown in FIG13 including a first sub-matching circuit electrically connected between one end of the first wire and the ground and a second sub-matching circuit electrically connected between the other end of the first wire and the ground;

FIG16 is a schematic diagram of a structure in which the second coil in the charging receiving assembly shown in FIG15 includes a third coil portion and a fourth coil portion formed by a second conductive wire;

FIG17 is a schematic diagram of the structure of the fourth coil portion including the fourth sub-coil portion and the fifth sub-coil portion in the charging receiving assembly shown in FIG16;

FIG18 is a schematic diagram of a structure in which the charging receiving component shown in FIG17 further includes a second matching circuit;

FIG19 is a schematic diagram of another structure in which the charging receiving component shown in FIG17 further includes a second matching circuit;

FIG20 is a schematic diagram of the structure of a device accessory provided in an embodiment of the present application;

FIG21 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

FIG22 is a schematic diagram of the structure of a device accessory group provided in an embodiment of the present application;

FIG23 is a schematic diagram of a planar structure of an electronic component provided in an embodiment of the present application;

FIG24 is a schematic diagram of the structure of an electronic assembly provided in an embodiment of the present application, including an electronic device, a first device accessory, and a second device accessory;

FIG25 is a schematic diagram of a structure in which the charging and transmitting component of the electronic component shown in FIG24 further includes a third matching circuit;

FIG. 26 is another schematic diagram of the structure in which the charging transmitter component of the electronic component shown in FIG. 17 further includes a third matching circuit.

Detailed ways

The present application provides a charging receiving assembly, including an energy storage circuit, a first coil and a second coil. The second coil is coupled with the antenna radiator of the charging and transmitting component to receive the electromagnetic wave signal emitted by the antenna radiator and generate an oscillating magnetic field. The second coil is mutually inductive with the first coil, and the second coil is electrically connected to the energy storage circuit. The second coil is used to generate an induced current under the action of the oscillating magnetic field to charge the energy storage circuit.

Wherein, the charging receiving component further includes a magnetic core, at least part of the first coil is arranged around the magnetic core, and at least part of the second coil is arranged around the magnetic core.

At least part of the second coil surrounds the magnetic core once, and at least part of the first coil surrounds the second coil once; or, the magnetic core includes a first magnetic part and a second magnetic part connected, at least part of the first coil surrounds the first magnetic part once, and at least part of the second coil surrounds the second magnetic part once.

Among them, the first coil includes a first coil part and a second coil part that are electrically connected, the first coil part is used to couple with the antenna radiator to receive the electromagnetic wave signal and convert it into an alternating current signal, and the second coil part is arranged around the magnetic core to generate the oscillating magnetic field according to the alternating current signal.

The first coil portion is formed by bending a first conductive wire, and the second coil portion is formed by twisting the first conductive wire.

The first coil portion includes a first sub-coil portion, a second sub-coil portion and a third sub-coil portion which are connected in sequence, the first sub-coil portion is opposite to the third sub-coil portion, and the second sub-coil portion is opposite to the second coil portion.

In which, the charging receiving component also includes a first matching circuit for adjusting the working frequency band of the first coil, and the first matching circuit is electrically connected between the two ends of the first wire, or the first matching circuit includes a first sub-matching circuit and a second sub-matching circuit, one end of the first sub-matching circuit is electrically connected to one end of the first wire, and the other end of the first sub-matching circuit is grounded, and one end of the second sub-matching circuit is electrically connected to the other end of the first wire, and the other end of the second sub-matching circuit is grounded.

The second coil includes a third coil portion and a fourth coil portion which are electrically connected. The third coil portion is arranged around the magnetic core to generate an induced current under the action of the oscillating magnetic field. The fourth coil portion is electrically connected to the energy storage circuit.

Among them, the third coil portion is formed by winding the second wire, the fourth coil portion is formed by bending the second wire, the fourth coil portion includes a fourth sub-coil portion and a fifth sub-coil portion, the fourth sub-coil portion, the third coil portion and the fifth sub-coil portion are connected in sequence, one end of the fourth sub-coil portion away from the third coil portion is electrically connected to the positive pole of the energy storage circuit, and one end of the fifth sub-coil portion away from the third coil portion is electrically connected to the negative pole of the energy storage circuit.

Among them, the charging receiving component also includes a second matching circuit for adjusting the working frequency band of the second coil, and the second matching circuit is electrically connected between the second coil and the energy storage circuit, or, one end of the second matching circuit is electrically connected to the second coil, and the other end of the second matching circuit is grounded.

The present application also provides a device accessory set, including an accessory body and the charging receiving component, wherein the accessory body can be installed on an electronic device, and the charging receiving component is arranged on the accessory body.

Wherein, the device accessory is an electronic writing pen.

The present application also provides a device accessory set, including a first accessory body, a second accessory body and the charging receiving component, the first accessory body can be installed on an electronic device, the second accessory body can be installed on the first accessory, the first coil is arranged on the first accessory body, and the first coil and the first accessory body form a first device accessory, the energy storage circuit and the second coil are arranged on the second accessory body, and the energy storage circuit, the second coil and the second accessory body form a second device accessory.

Among them, the first device accessory is a protective shell, and the second device accessory is an electronic writing pen.

The first accessory body includes a main body and a mounting portion connected to the main body, and the main body can be mounted on On the electronic device, the mounting portion is surrounded to form a receiving cavity, and at least a portion of the second accessory body can be received in the receiving cavity.

Among them, the first coil portion of the first coil is arranged on the main body portion, and the second coil portion of the first coil is arranged on the mounting portion. When at least part of the second accessory body is accommodated in the accommodating cavity, at least part of the magnetic core of the charging receiving component is passed through the second coil portion.

The present application also provides an electronic component, including an electronic device and the device accessory group, the electronic device includes a charging and transmitting component, the charging and transmitting component includes a power supply circuit and an antenna radiator electrically connected to the power supply circuit, and the antenna radiator is used to transmit electromagnetic wave signals.

The electronic device further comprises a display screen and a shell, a receiving space is formed between the display screen and the shell, the power supply circuit and the antenna radiator are both arranged in the receiving space, the first accessory body can be mounted on a side of the shell away from the display screen, and the orthographic projection of the antenna radiator on the surface where the first coil part of the first coil is located covers at least a portion of the first coil part.

Among them, the charging transmitting component also includes a third matching circuit for adjusting the working frequency band of the antenna radiator, and the third matching circuit is electrically connected between the power supply circuit and the antenna radiator, or one end of the third matching circuit is electrically connected to the antenna radiator, and the other end of the third matching circuit is grounded.

Wherein, the antenna radiator is an FPC antenna radiator or an LDS antenna radiator.

The technical solution provided by the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

References to "embodiments" and "implementations" in this application mean that the specific features, structures, or characteristics described in conjunction with the embodiments or implementations may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order; the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

As shown in FIG1 , FIG1 is a schematic diagram of the structure of a charging receiving component 100 provided in an embodiment of the present application. The charging receiving component 100 includes a storage circuit 10 , a first coil 11 and a second coil 12 .

The energy storage circuit 10 can store electrical energy. The energy storage circuit 10 may include a rechargeable battery capable of storing electrical energy. For example: a lead-acid battery, a nickel-chromium battery, a lithium-ion battery, an iron-lithium battery, etc. The energy storage circuit 10 may also include energy storage elements such as capacitors and inductors capable of storing electrical energy. In a possible embodiment, the energy storage circuit 10 includes a rechargeable battery. The rechargeable battery can store DC electrical energy.

As shown in Figure 2, Figure 2 is a schematic diagram of the architecture of the charging system formed by the charging receiving component 100 and the charging transmitting component 40 shown in Figure 1. The first coil 11 of the charging receiving component 100 is used to couple with the antenna radiator 401 of the charging transmitting component 40 to receive the electromagnetic wave signal emitted by the antenna radiator 401 and generate an oscillating magnetic field. Specifically, at least part of the first coil 11 is coupled with the antenna radiator 401 of the charging transmitting component 40. Among them, at least part of the first coil 11 is spaced apart from the antenna radiator 401 of the charging transmitting component 40 and the orthographic projection of at least part of the first coil 11 on the surface where the antenna radiator 401 is located coincides with at least part of the antenna radiator 401. In this embodiment of the present application, the spacing distance between at least part of the first coil 11 and the antenna radiator 401 of the charging transmitting component 40 can be 1mm to 10mm. When the charging transmitting component 40 When the antenna radiator 401 transmits an electromagnetic wave signal, the first coil 11 can receive the electromagnetic wave signal transmitted by the antenna radiator 401, and generate an oscillating current according to the received electromagnetic wave signal, thereby generating an oscillating magnetic field. The antenna radiator 401 can be a coil antenna radiator, a chip antenna radiator, a columnar antenna radiator, etc.

The second coil 12 is mutually inductive with the first coil 11, and the second coil 12 is electrically connected to the energy storage circuit 10. The second coil 12 is used to generate an induced current under the action of the oscillating magnetic field generated by the first coil 11 to charge the energy storage circuit 10. Among them, the mutual inductance between the second coil 12 and the first coil 11 means that the oscillating magnetic field generated by the first coil 11 can change the magnetic flux of the second coil 12, so that an induced electromotive force is generated in the second coil 12, thereby generating an induced current. Optionally, at least part of the first coil 11 and at least part of the second coil 12 are arranged around the same magnetic core to form a mutual inductance; or at least part of the first coil 11 and at least part of the second coil 12 are close to each other to form a mutual inductance. The second coil 12 and the energy storage circuit 10 can be directly electrically connected or indirectly electrically connected. In the embodiment of the present application, the induced current generated by the second coil 12 is AC power. As shown in Figure 3, the charging receiving component 100 also includes a rectifier circuit 13 electrically connected between the energy storage circuit 10 and the second coil 12. The rectifier circuit 13 can receive the AC power generated by the second coil 12 and convert it into DC power. The energy storage circuit 10 can store the DC power input after conversion by the rectifier circuit 13 .

It can be understood that since the first coil 11 is coupled with the antenna radiator 401 of the charging transmitting component 40 and has mutual inductance with the second coil 12, the first coil 11 can first couple the energy emitted by the antenna radiator 401 to itself, and then transfer it to the second coil 12, thereby realizing energy transmission between the antenna radiator 401 and the second coil 12, and the second coil 12 is electrically connected to the energy storage circuit 10, so that the received electric energy can be transmitted to the energy storage circuit 10 to charge the energy storage circuit 10. Among them, the first coil 11 can realize the energy transfer between the antenna radiator 401 and the second coil 12 without the need for additional filtering, rectification, control and other circuits. In a possible application scenario, the charging receiving component 100 provided in the present application can realize the wireless charging of mobile phones to products such as electronic writing pens, which is conducive to the application of products such as electronic writing pens in mobile phones. Especially with the development of foldable mobile phones, it is particularly urgent to solve the application of products such as electronic writing pens in mobile phones.

The charging receiving component 100 provided in the present application includes an energy storage circuit 10, a first coil 11 and a second coil 12. Since the first coil 11 can be coupled with the antenna radiator 401 of the charging transmitting component 40, the first coil 11 can receive the electromagnetic wave signal emitted by the antenna radiator 401 and generate an oscillating magnetic field. The second coil 12 and the first coil 11 are mutually inductive, so the second coil 12 can generate an induced current under the action of the oscillating magnetic field generated by the first coil 11, so that the antenna radiator 401, the first coil 11, the second coil 12 and the energy storage circuit 10 form a charging circuit to achieve the charging function. By adding the first coil 11, the first coil 11 and the antenna radiator 401 are coupled, and the first coil 11 and the second coil 12 are mutually inductive to form a charging circuit. In an electronic product where the antenna radiator 401 and the second coil 12 are directly arranged without space, the electromagnetic energy emitted by the antenna radiator 401 can be transferred to the range that the second coil 12 can receive through the first coil 11, so as to reduce the blind area of the charging magnetic field and improve the charging efficiency.

In a possible embodiment, as shown in FIG. 4 , the charging receiving component 100 further includes a magnetic core 14. The magnetic core 14 is a magnetic conductor, which is used to increase the magnetic induction intensity. The magnetic core 14 may be a ferrite core, a silicon steel sheet core, etc. The shape of the magnetic core 14 may be a long strip, a column, an I-shaped, a hat, a can, an E-shaped, a C-shaped, etc. The present application does not specifically limit the material and shape of the magnetic core 14. In the following embodiments, the long strip magnetic core 14 is taken as an example without explicit description. At least part of the first coil 11 is arranged around the magnetic core 14. In a possible embodiment, at least part of the first coil 11 can be arranged around the magnetic core 14. In another possible embodiment, at least part of the first coil 11 can be arranged around part of the magnetic core 14. At least part of the second coil 12 is arranged around the magnetic core 14. In a possible embodiment, at least part of the second coil 12 can be arranged around the magnetic core 14. In another possible embodiment, at least part of the second coil 12 can be arranged around part of the magnetic core 14. At least part of the second coil 12 and at least part of the first coil 11 may be disposed around the same part of the magnetic core 14 , or may be disposed around different parts of the magnetic core 14 .

In this embodiment, the magnetic core 14 is provided so that at least part of the first coil 11 is arranged around the magnetic core 14, and at least part of the first coil 11 is arranged around the magnetic core 14. The two coils 12 are arranged around the magnetic core 14, that is, at least part of the first coil 11 and at least part of the second coil 12 share the same magnetic core 14, forming a mutual inductance between the second coil 12 and the first coil 11. On the basis of realizing that the second coil 12 can generate an induced current under the action of the oscillating magnetic field generated by the first coil 11 to charge the energy storage circuit 10, the electromagnetic energy conversion efficiency between the first coil 11 and the second coil 12 can be enhanced, the energy loss can be reduced, and the charging efficiency can be further improved.

Optionally, at least part of the second coil 12 surrounds the magnetic core 14, and at least part of the first coil 11 surrounds the second coil 12; or, the magnetic core 14 includes a first magnetic part 140 and a second magnetic part 141 connected, at least part of the first coil 11 surrounds the first magnetic part 140, and at least part of the second coil 12 surrounds the second magnetic part 141.

In a possible implementation, as shown in FIG5 , at least part of the second coil 12 surrounds the magnetic core 14 once, and at least part of the first coil 11 surrounds the second coil 12 once. In other words, the second coil 12 is disposed outside the magnetic core 14, and the first coil 11 is disposed outside the second coil 12. This implementation enhances the electromagnetic energy conversion efficiency between the first coil 11 and the second coil 12, reduces energy loss, and improves the compactness of the charging receiving component 100. Therefore, it is easy to reduce the volume of the charging receiving component 100, and is suitable for designing a smaller charging receiving component 100.

In another possible embodiment, as shown in FIG6 , the magnetic core 14 includes a first magnetic portion 140 and a second magnetic portion 141 that are connected. In this embodiment, the first magnetic portion 140 and the second magnetic portion 141 can be understood as two parts of the magnetic core 14 divided along its length direction. At least part of the first coil 11 surrounds the first magnetic portion 140. At least part of the second coil 12 surrounds the second magnetic portion 141. While enhancing the electromagnetic energy conversion efficiency between the first coil 11 and the second coil 12 and reducing energy loss, this embodiment is conducive to reducing the difficulty of the structural design of the charging receiving component 100 and facilitating the production and manufacturing of the charging receiving component 100 because the structure of the magnetic core 14, the way the first coil 11 surrounds the magnetic core 14, and the way the second coil 12 surrounds the magnetic core 14 are simple.

Optionally, as shown in FIG7 , the first coil 11 includes an electrically connected first coil portion 110 and a second coil portion 112. The first coil portion 110 and the second coil portion 112 may be directly electrically connected or indirectly electrically connected. In the following embodiments, the first coil portion 110 and the second coil portion 112 are directly electrically connected as an example. The material of the first coil portion 110 may be metal, alloy, composite metal, composite polymer conductive material, etc. The material of the second coil portion 112 may be metal, alloy, composite metal, composite polymer conductive material, etc. For example, the material of the first coil portion 110 may be one of copper, silver, copper alloy, aluminum alloy, carbon fiber, graphene, conductive plastic, etc. The material of the second coil portion 112 may be one of copper, silver, copper alloy, aluminum alloy, carbon fiber, graphene, conductive plastic, etc. The material of the first coil portion 110 and the material of the second coil portion 112 may be the same or different. The first coil portion 110 is used to couple with the antenna radiator 401 to receive the electromagnetic wave signal emitted by the antenna radiator 401 and convert it into an alternating current signal. The second coil portion 112 is disposed around the magnetic core 14 to generate an oscillating magnetic field according to the AC signal generated by the first coil portion 110. It can be understood that in this embodiment, part of the first coil 11 is coupled with the antenna radiator 401; another part of the first coil 11 is disposed around the magnetic core 14 to generate mutual inductance with the second coil 12.

By coupling the first coil portion 110 of the first coil 11 with the antenna radiator 401, the second coil portion 112 of the first coil 11 is arranged around the magnetic core 14 to form mutual inductance with the second coil 12, which can be suitable for wireless charging in a scene where the antenna radiator 401 of the charging transmitter component 40 and the second coil 12 of the charging receiving component 100 are far apart, thereby reducing the restrictions on the setting position of the antenna radiator 401 of the charging transmitter component 40, the setting position of the second coil 12 of the charging receiving component 100, and the placement position of the charging receiving component 100 relative to the charging receiving component 100. It can be understood that the charging receiving component 100 provided in this embodiment can solve the technical problem of how to perform wireless charging when the second coil 12 and the antenna radiator 401 are located in the same electronic product but are far apart, and can also solve the technical problem of how to perform wireless charging when the second coil 12 and the antenna radiator 401 are located in different electronic products and there is a magnetic field blind area.

In a possible implementation manner, the first coil portion 110 is formed by bending a first conductive wire. The first conductor 112 is formed by winding the first conductor. The first conductor may be an aluminum wire, a copper wire, an alloy wire, etc. Of course, the first conductor may also include a conductor and an insulating layer surrounding the outside of the conductor. The material of the conductor may be aluminum, copper, an alloy, etc. The insulating layer may be a paint film layer, an organic film layer, an inorganic film layer, etc. The first conductor may be a flat wire, a round wire, a special-shaped wire, etc. The first conductor may be formed into the second coil portion 112 by a single-turn bending method, or may be formed into the first coil portion 110 by a multi-turn bending method. The first conductor may be formed into the first coil portion 110 by a single-layer winding method, or may be formed into the second coil portion 112 by a multi-layer winding method. In other words, the first coil portion 110 may include one or more first conductor segments, and the second coil portion 112 may include one or more first conductor loops. In the embodiment of the present application, the first coil portion 110 includes a first conductor segment, and the second coil portion 112 includes a first conductor loop as an example. The first coil portion 110 formed by bending the first conductor may be L-shaped, U-shaped, C-shaped, etc. In this embodiment, the first coil portion 110 and the second coil portion 112 can be formed by one conductive wire, which has a simple structure and low cost.

In a possible embodiment, as shown in FIG8 , the first coil portion 110 includes a first sub-coil portion 1101, a second sub-coil portion 1102, and a third sub-coil portion 1103 connected in sequence. The first sub-coil portion 1101 is opposite to the third sub-coil portion 1103, and the second sub-coil portion 1102 is opposite to the second coil portion 112. It can be understood that the first conductive wire can sequentially form the second coil portion 112, the first sub-coil portion 1101, the second sub-coil portion 1102, and the third sub-coil portion 1103; or the first conductive wire can sequentially form the first sub-coil portion 1101, the second sub-coil portion 1102, the third sub-coil portion 1103, and the second coil portion 112. In this embodiment, while forming the first coil portion 110 and the second coil portion 112 by one conductive wire, the coverage area of the first coil portion 110 can be expanded, and the coupling effect between the first coil portion 110 and the antenna radiator 401 can be improved.

Optionally, referring to FIGS. 9 to 12 , at least one of the first sub-coil portion 1101 , the second sub-coil portion 1102 and the third sub-coil portion 1103 is coupled to the antenna radiator 401 of the charging transmitter component 40 . For example: the orthographic projection of the first sub-coil portion 1101 on the surface of the antenna radiator 401 coincides with the antenna radiator 401, thereby coupling with the antenna radiator 401; or, the orthographic projection of the first sub-coil portion 1101 on the surface of the antenna radiator 401 and the orthographic projection of the second sub-coil portion 1102 on the surface of the antenna radiator 401 both coincide with the antenna radiator 401, thereby coupling with the antenna radiator 401; or, the orthographic projection of the first sub-coil portion 1101 on the surface of the antenna radiator 401, the orthographic projection of the second sub-coil portion 1102 on the surface of the antenna radiator 401 and the orthographic projection of the third sub-coil portion 1103 on the surface of the antenna radiator 401 all coincide with the antenna radiator 401, thereby coupling with the antenna radiator 401, etc.

Further, referring to Figures 13 to 15, the charging receiving component 100 also includes a first matching circuit 15 for adjusting the working frequency band of the first coil 11. The first matching circuit 15 is electrically connected between the two ends of the first wire, or the first matching circuit 15 includes a first sub-matching circuit 150 and a second sub-matching circuit 151, one end of the first sub-matching circuit 150 is electrically connected to one end of the first wire, the other end of the first sub-matching circuit 150 is grounded, one end of the second sub-matching circuit 151 is electrically connected to the other end of the first wire, and the other end of the second sub-matching circuit 151 is grounded.

Among them, the first matching circuit 15 may include one or more of a capacitor, an inductor, and a resistor. The present application does not specifically limit the type and quantity of the capacitor, inductor, and resistor included in the first matching circuit 15. In a possible embodiment, as shown in FIG14, the first matching circuit 15 is electrically connected between the two ends of the first wire. In another possible embodiment, as shown in FIG15, the first matching circuit 15 includes a first sub-matching circuit 150 and a second sub-matching circuit 151. One end of the first sub-matching circuit 150 is electrically connected to one end of the first wire, and the other end of the first sub-matching circuit 150 is grounded. One end of the second sub-matching circuit 151 is electrically connected to the other end of the first wire, and the other end of the second sub-matching circuit 151 is grounded.

By designing the first matching circuit 15 to control the operating frequency of the first coil 11, the coupling efficiency between the first coil 11 and the antenna radiator 401 of the charging transmitter component 40 can be improved, and the mutual inductance efficiency between the first coil 11 and the second coil 12 can be improved, thereby reducing the energy loss between the first coil 11 and the antenna radiator 401 and reducing the mutual inductance between the first coil 11 and the second coil 12. 12, and improve the charging efficiency.

Optionally, as shown in FIG16, the second coil 12 includes a third coil portion 120 and a fourth coil portion 121 that are electrically connected. The third coil portion 120 and the fourth coil portion 121 may be directly electrically connected or indirectly electrically connected. In the following embodiments, the third coil portion 120 and the fourth coil portion 121 are directly electrically connected as an example. The material of the third coil portion 120 may be metal, alloy, composite metal, composite polymer conductive material, etc. The material of the fourth coil portion 121 may be metal, alloy, composite metal, composite polymer conductive material, etc. For example, the material of the third coil portion 120 may be one of copper, silver, copper alloy, aluminum alloy, carbon fiber, graphene, conductive plastic, etc. The material of the fourth coil portion 121 may be one of copper, silver, copper alloy, aluminum alloy, carbon fiber, graphene, conductive plastic, etc. The material of the third coil portion 120 may be the same as or different from the material of the fourth coil portion 121. The third coil portion 120 is arranged around the magnetic core 14 to generate an induced current under the action of the oscillating magnetic field generated by the first coil 11. The fourth coil portion 121 is electrically connected to the energy storage circuit 10. The fourth coil portion 121 is used to transmit the electrical signal between the third coil portion 120 and the energy storage circuit 10. It can be understood that in this embodiment, part of the second coil 12 is arranged around the magnetic core 14 to have mutual inductance with the first coil 11; the other part of the second coil 12 is electrically connected to the energy storage circuit 10, and is used to transmit the induced current to the energy storage circuit 10.

By making the third coil portion 120 of the second coil 12 surround the magnetic core 14 and have mutual inductance with the first coil 11, the fourth coil portion 121 of the second coil 12 is electrically connected to the energy storage circuit 10. This can be suitable for wireless charging in scenarios where the magnetic core 14 and the energy storage circuit 10 are far apart, thereby reducing restrictions on the setting position of the magnetic core 14 and the setting position of the energy storage circuit 10.

In a possible implementation, the third coil portion 120 is formed by winding a second wire. The fourth coil portion 121 is formed by bending the second wire. The second wire may be an aluminum wire, a copper wire, an alloy wire, etc. Of course, the second wire may also include a conductor and an insulating layer surrounding the outside of the conductor. The material of the conductor may be aluminum, copper, an alloy, etc. The insulating layer may be a paint film layer, an organic film layer, an inorganic film layer, etc. The second wire may be a flat wire, a round wire, a shaped wire, etc. The second wire may form the third coil portion 120 by winding a single layer, or may form the third coil portion 120 by winding a multi-layer. In the embodiment of the present application, the third coil portion 120 is formed by winding a second wire in a single layer as an example. In other words, in the embodiment of the present application, the third coil portion 120 includes a second wire loop. The fourth coil portion 121 formed by bending and extending the second wire may be L-shaped, U-shaped, C-shaped, etc. In this implementation, the third coil portion 120 and the fourth coil portion 121 may be formed by one wire, which has a simple structure and low cost.

In a possible embodiment, as shown in FIG17 , the fourth coil portion 121 includes a fourth sub-coil portion 1210 and a fifth sub-coil portion 1211. The fourth sub-coil portion 1210, the third coil portion 120 and the fifth sub-coil portion 1211 are connected in sequence. One end of the fourth sub-coil portion 1210 away from the third coil portion 120 is electrically connected to the positive pole of the energy storage circuit 10, and one end of the fifth sub-coil portion 1211 away from the third coil portion 120 is electrically connected to the negative pole of the energy storage circuit 10. In other words, one end of the second wire is electrically connected to the positive pole of the energy storage circuit 10, and the other end of the second wire is electrically connected to the negative pole of the energy storage circuit 10. It can be understood that the second wire includes a first sub-wire, a second sub-wire and a third sub-wire connected in sequence; the first sub-wire forms the fourth sub-coil portion 1210, the second sub-wire forms the third coil portion 120, and the third sub-wire forms the fifth sub-coil portion 1211. In this embodiment, the second coil 12 can be formed by a wire, and the positive and negative electrodes of the energy storage circuit 10 are electrically connected to form a charging circuit, which has a simple structure and low cost.

Further, please refer to Figures 18 and 19, the charging receiving component 100 also includes a second matching circuit 16 for adjusting the working frequency band of the second coil 12. The second matching circuit 16 is electrically connected between the second coil 12 and the energy storage circuit 10, or one end of the second matching circuit 16 is electrically connected to the second coil 12, and the other end of the second matching circuit 16 is grounded. Among them, the second matching circuit 16 may include one or more of a capacitor, an inductor, and a resistor. The present application does not specifically limit the type and quantity of the capacitor, inductor, and resistor included in the second matching circuit 16. In one possible embodiment, as shown in Figure 18, the second matching circuit 16 is electrically connected between the second coil 12 and the energy storage circuit 10. In another possible embodiment, as shown in Figure 19, one end of the second matching circuit 16 is electrically connected to the second coil 12, and the other end of the second matching circuit 16 is grounded. By designing the second matching circuit 16 controls the operating frequency of the second coil 12, which can improve the mutual inductance efficiency between the second coil 12 and the first coil 11, and the transmission efficiency between the second coil 12 and the energy storage circuit 10, thereby reducing the energy loss between the second coil 12 and the first coil 11 and reducing the energy loss between the second coil 12 and the energy storage circuit 10, thereby improving the charging efficiency.

Please refer to Figures 20 and 21. Figure 20 is a schematic diagram of the structure of a device accessory 200 provided in an embodiment of the present application, and Figure 21 is a schematic diagram of the structure of an electronic device 400 provided in an embodiment of the present application. The electronic device 400 can be a mobile phone, for example: a straight-screen mobile phone, a folding mobile phone, etc. In the embodiment of the present application, the electronic device 400 takes a straight-screen mobile phone as an example. Of course, in other embodiments, the electronic device 400 can also be a tablet, a laptop, etc. The device accessory 200 includes an accessory body 21 and the charging receiving component 100. The accessory body 21 can be installed on the electronic device 400. For example, the accessory body 21 can be adsorbed on the electronic device 400; or, the accessory body 21 can be snapped onto the electronic device 400; or, the accessory body 21 can be sleeved on the electronic device 400, etc. Among them, the accessory body 21 can be fixed to the electronic device 400, and the accessory body 21 can also be separated from the electronic device 400. The charging receiving component 100 can refer to the charging receiving component 100 in any of the above embodiments, and will not be repeated here. The charging receiving component 100 is arranged on the accessory body 21. In this embodiment, the charging receiving assembly 100 can be fixed to the electronic device 400 through the accessory body 21 , thereby facilitating wireless charging of the energy storage circuit 10 of the device accessory 200 through the electronic device 400 .

In a possible embodiment, the device accessory 200 is an electronic writing pen. It can be understood that the accessory body 21 is the body of the electronic writing pen. The energy storage circuit 10 of the charging receiving component 100 is the energy storage circuit 10 of the electronic writing pen. When the device accessory 200 is installed in the electronic device 400, the electronic writing pen can be charged by the electronic device 400; when the device accessory 200 is separated from the electronic device 400, the user can operate the electronic writing pen to write on the electronic device 400. Among them, the accessory body 21 can include an electronic pen tip 210, a pen barrel 211, and a carrier 212 connected to the outside of the pen barrel 211. The pen barrel 211 and the carrier 212 can be connected in an integral manner, or can be connected together in a detachable connection method or a non-detachable connection method. The energy storage circuit 10 and the second coil 12 of the charging receiving component 100 are both arranged in the pen barrel 211, and the energy storage circuit 10 is electrically connected to the electronic pen tip 210 to provide electrical energy for the electronic pen tip 210. The first coil 11 is arranged on the carrier 212. One of the pen holder 211 and the carrier 212 can be installed on the electronic device 400. In one possible embodiment, the pen holder 211 can be adsorbed together with the electronic device 400. Since the carrier 212 is connected to the pen holder 211, the carrier 212 can be relatively fixed to the electronic device 400. When the pen holder 211 and the electronic device 400 are adsorbed together, the first coil 11 provided on the carrier 212 is coupled with the antenna radiator 401 of the charging and transmitting component 40 of the electronic device 400. In another possible embodiment, the carrier 212 can be adsorbed together with the electronic device 400. At this time, the first coil 11 provided on the carrier 212 is coupled with the antenna radiator 401 of the charging and transmitting component 40 of the electronic device 400. Since the carrier 212 is connected to the pen holder 211, the pen holder 211 can be relatively fixed to the electronic device 400, thereby fixing the device accessory 200. In this embodiment, when the electronic writing pen is not in use, the electronic writing pen can be fixed to the electronic device 400, and the electronic writing pen can be charged through the electronic device 400, thereby realizing the application of the electronic writing pen in small electronic devices 400 such as mobile phones.

Please refer to FIG. 21 and FIG. 22. FIG. 22 is a schematic diagram of the structure of a device accessory set 300 provided in an embodiment of the present application. The device accessory set 300 includes a first accessory body 31, a second accessory body 32 and the charging receiving assembly 100. The charging receiving assembly 100 can refer to the charging receiving assembly 100 in any of the above embodiments, and will not be repeated here. The first accessory body 31 can be installed on the electronic device 400. For example, the first accessory body 31 can be adsorbed on the electronic device 400; or, the first accessory body 31 can be clamped on the electronic device 400; or, the first accessory body 31 can be sleeved on the electronic device 400, etc. The second accessory body 32 can be installed on the first accessory body 31. For example, the second accessory body 32 can be adsorbed on the first accessory body 31; or, the second accessory body 32 can be clamped on the first accessory body 31; or, the second accessory body 32 can be inserted on the first accessory body 31, etc. The first coil 11 of the charging receiving assembly 100 is provided on the first accessory body 31. The first coil 11 and the first accessory body 31 form a first device accessory. The energy storage circuit 10 of the charging receiving component 100 and the second coil 12 of the charging receiving component 100 are arranged in the second accessory body 32. The energy storage circuit 10, the second coil 12 and the second accessory body 32 form a second device accessory. In this embodiment, the energy storage circuit 10 of the charging receiving component 100 and the second coil 12 of the charging receiving component 100 are arranged on the second accessory body 32 to form a second device accessory. The first accessory body 31 can be installed on the electronic device 400, and the second accessory body 32 can be installed on the first accessory body 31, so that the energy storage circuit 10 of the charging receiving component 100 can be fixed to the electronic device 400, which is conducive to wireless charging of the second device accessory of the device accessory group 300 through the electronic device 400. In addition, the first coil 11 of the charging receiving component 100 is arranged on the first accessory body 31 to form a first device accessory, that is, the first device accessory of the electronic device 400 is used to carry the first coil 11, which can reduce the design of the bearing structure for carrying the first coil 11, simplify the structure of the device accessory group 300, and improve the utilization rate of the first device accessory of the electronic device 400.

In a possible embodiment, the first device accessory is a protective shell. The second device accessory is an electronic writing pen. The first accessory body 31 as a protective shell of the electronic device 400 may have one or more functions such as anti-slip, shockproof, scratch-proof, drop-proof, wear-resistant, personalized, enhanced service life, and beautiful. Among them, the material of the first accessory body 31 may be ceramic, glass, plastic, leather, silicone, metal, alloy, stainless steel, carbon fiber, etc. In the embodiment of the present application, in order to reduce the influence of the first accessory body 31 on the coupling between the antenna radiator 401 and the first coil 11, the first accessory body 31 may be an insulating material such as ceramic, glass, plastic, leather, silicone, etc. The second accessory body 32 is the body of the electronic writing pen. The energy storage circuit 10 of the charging receiving component 100 is the energy storage circuit 10 of the electronic writing pen. When the second accessory body 32 is installed on the first accessory body 31 and the first accessory body 31 is installed on the electronic device 400, the electronic writing pen can be charged through the electronic device 400; when the second accessory body 32 is separated from the first accessory body 31, the user can operate the second device accessory to write on the electronic device 400.

Among them, the first accessory body 31 may include a main body 310 and a mounting portion 311 connected to the main body 310. The main body 310 and the mounting portion 311 may be integrally formed, or may be fixed together by bonding, welding, snap connection, threaded connection, or other connection methods. The main body 310 can be sleeved on the electronic device 400. The shape of the main body 310 is substantially the same as the shape of the housing 42 of the electronic device 400 (refer to FIG. 24 ), so as to be sleeved on the outer surface of the housing 42 of the electronic device 400. The mounting portion 311 is surrounded to form a receiving cavity. At least part of the second accessory body 32 can be received in the receiving cavity. In a possible embodiment, the shape of the mounting portion 311 is substantially a hollow cylinder. The inner surface of the mounting portion 311 forms a cylindrical receiving space. By forming a cylindrical receiving space, this embodiment can facilitate the reception of a cylindrical electronic writing pen.

Optionally, the first coil portion 110 of the first coil 11 is disposed on the main body 310. Specifically, the first coil portion 110 may be disposed on the inner surface of the main body 310; or, the first coil portion 110 may be disposed on the outer surface of the main body 310; or, the first coil portion 110 may be disposed between the inner surface of the main body 310 and the outer surface of the main body 310. When the first accessory body 31 is mounted on the electronic device 400, the inner surface of the main body 310 faces the electronic device 400, and the outer surface of the main body 310 faces away from the electronic device 400. In a possible embodiment, the main body 310 includes a first shell layer and a second shell layer connected to each other, and the first coil portion 110 is sandwiched between the first shell layer and the second shell layer. The second coil portion 112 of the first coil 11 is disposed on the mounting portion 311. Specifically, the second coil portion 112 may be disposed on the inner surface of the mounting portion 311; or, the second coil portion 112 may be disposed on the outer surface of the mounting portion 311; or, the second coil portion 112 may be disposed between the inner surface and the outer surface of the mounting portion 311. When the second accessory body 32 is received in the receiving cavity of the first accessory body 31, the inner surface of the mounting portion 311 faces the second accessory body 32, and the outer surface of the mounting portion 311 faces away from the second accessory body 32. In a possible embodiment, the mounting portion 311 includes a first mounting layer and a second mounting layer connected to each other, and the second coil portion 112 is sandwiched between the first mounting layer and the second mounting layer. The first mounting layer is connected to the first shell layer, and the second mounting layer is connected to the second shell layer. When at least part of the second accessory body 32 is received in the receiving cavity, at least part of the magnetic core 14 of the charging receiving component 100 is inserted into the second coil portion 112.

The second accessory body 32 may include an electronic pen tip 320 and a pen holder 321. The energy storage circuit 10 and the second coil 12 of the charging receiving component 100 are both disposed in the pen holder 321, and the energy storage circuit 10 is electrically connected to the electronic pen tip 320 to provide the electronic pen tip 320 with energy. Electricity.

In this embodiment, when the second accessory body 32 is accommodated in the accommodating cavity, the second coil portion 112 can be arranged around the magnetic core 14, so that the second coil portion 112 and the first coil 11 can achieve mutual inductance. The structure is simple and the operation is convenient, which is conducive to simplifying the user's operation method.

As shown in FIG. 23 , FIG. 23 is a schematic diagram of a planar structure of an electronic component 1000 provided in an embodiment of the present application. The electronic component 1000 includes an electronic device 400 and the device accessory group 300. The electronic device 400 includes a charging transmitter component 40. The charging transmitter component 40 includes a power supply circuit 402 and an antenna radiator 401 electrically connected to the power supply circuit 402, and the antenna radiator 401 is used to transmit an electromagnetic wave signal.

In a possible embodiment, the power supply circuit 402 includes a transmission circuit and an external interface. One end of the transmission circuit is electrically connected to the antenna radiator 401, and the other end of the transmission circuit is electrically connected to the external interface. The external interface is used to electrically connect to an external power source. When the external interface is electrically connected to the external power source, the external power source can provide power to the electronic device 400, and at the same time, can provide power to the antenna radiator 401 through the transmission circuit, thereby stimulating the antenna radiator 401 to emit an electromagnetic wave signal.

In another possible embodiment, the power supply circuit 402 includes a frequency conversion circuit and a power supply battery. One end of the frequency conversion circuit is electrically connected to the antenna radiator 401, and the other end of the frequency conversion circuit is electrically connected to the power supply battery. The power supply battery can provide power to the electronic device 400, and at the same time, can provide power to the antenna radiator 401 through the frequency conversion circuit, thereby stimulating the antenna radiator 401 to emit an electromagnetic wave signal. Among them, the frequency conversion circuit is used to convert the DC power provided by the power supply battery into AC power and transmit it to the antenna radiator 401.

Further, referring to FIG. 23 and FIG. 24 , the electronic device 400 further includes a display screen 41 and a housing 42. A receiving space is formed between the display screen 41 and the housing 42. The power supply circuit 402 and the antenna radiator 401 are both arranged in the receiving space. The first accessory body 31 can be sleeved on the side of the housing 42 away from the display screen 41. The orthographic projection of the antenna radiator 401 on the surface where the first coil portion 110 of the first coil 11 is located covers at least part of the first coil portion 110. It can be understood that the antenna radiator 401 and the first coil portion 110 are arranged opposite to each other along the thickness direction of the electronic device 400. Among them, the thickness direction of the electronic device 400 can refer to the Z-axis direction in the accompanying drawings. In this embodiment, by making the orthographic projection of the antenna radiator 401 on the surface where the first coil portion 110 of the first coil 11 is located cover at least part of the first coil portion 110, it is beneficial for the antenna radiator 401 to couple with the first coil portion 110, thereby improving the efficiency of the first coil 11 generating an oscillating magnetic field.

Wherein, please refer to Figures 25 and 26, the charging and transmitting component 40 also includes a third matching circuit 403 for adjusting the working frequency band of the antenna radiator 401. The third matching circuit 403 is electrically connected between the power supply circuit 402 and the antenna radiator 401, or one end of the third matching circuit 403 is electrically connected to the antenna radiator 401, and the other end of the third matching circuit 403 is grounded. Wherein, the third matching circuit 403 may include one or more of a capacitor, an inductor, and a resistor. The present application does not specifically limit the type and quantity of the capacitor, inductor, and resistor included in the third matching circuit 403. In one possible embodiment, as shown in Figure 25, the third matching circuit 403 is electrically connected between the power supply circuit 402 and the antenna radiator 401. In another possible embodiment, as shown in Figure 26, one end of the third matching circuit 403 is electrically connected to the antenna radiator 401, and the other end of the third matching circuit 403 is grounded. By designing the third matching circuit 403 to control the operating frequency of the antenna radiator 401, the coupling efficiency between the antenna radiator 401 and the first coil 11 can be improved, thereby reducing the energy loss between the antenna radiator 401 and the first coil 11 and improving the charging efficiency.

Optionally, the antenna radiator 401 is an FPC (flexible printed circuit) antenna radiator 401 or an LDS (laser direct structuring) antenna radiator 401. For example, the antenna radiator 401 may include a single-loop antenna trace located on the FPC or a multi-loop antenna trace located on the FPC. By making the antenna radiator 401 an FPC antenna radiator 401 or an LDS antenna radiator 401, the antenna radiator 401 can be bent while occupying a smaller internal space of the electronic device 400, thereby This facilitates coupling of more antenna radiators 401 with the first coil portion 110 of the first coil 11 , helps ensure the coupling effect between the antenna radiator 401 and the first coil 11 , and improves charging efficiency.

The features mentioned in the description, claims and drawings can be combined with each other as desired, as long as they are meaningful within the scope of the present application. The advantages and features described for the charge receiving component 100 apply in a corresponding manner to the device accessory 200, the device accessory group 300 and the electronic component 1000.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims (20)

1. A charging receiving component, comprising:

   Energy storage circuit;

   A first coil, the first coil is used to couple with the antenna radiator of the charging and transmitting component to receive the electromagnetic wave signal emitted by the antenna radiator and generate an oscillating magnetic field; and

   The second coil has mutual inductance with the first coil and is electrically connected to the energy storage circuit. The second coil is used to generate an induced current under the action of the oscillating magnetic field to charge the energy storage circuit.
2. The charging receiving assembly according to claim 1, wherein the charging receiving assembly further comprises a magnetic core, at least a portion of the first coil is arranged around the magnetic core, and at least a portion of the second coil is arranged around the magnetic core.
3. The charging receiving assembly according to claim 2, wherein at least part of the second coil surrounds the magnetic core once, and at least part of the first coil surrounds the second coil once; or, the magnetic core includes a first magnetic part and a second magnetic part connected, at least part of the first coil surrounds the first magnetic part once, and at least part of the second coil surrounds the second magnetic part once.
4. The charging receiving assembly according to claim 2, wherein the first coil includes a first coil portion and a second coil portion that are electrically connected, the first coil portion is used to couple with the antenna radiator to receive the electromagnetic wave signal and convert it into an alternating current signal, and the second coil portion is arranged around the magnetic core to generate the oscillating magnetic field according to the alternating current signal.
5. The charge receiving assembly of claim 4, wherein the first coil portion is formed by bending a first conductive wire, and the second coil portion is formed by winding the first conductive wire.
6. The charging receiving assembly according to claim 5, wherein the first coil portion includes a first sub-coil portion, a second sub-coil portion and a third sub-coil portion connected in sequence, the first sub-coil portion is opposite to the third sub-coil portion, and the second sub-coil portion is opposite to the second coil portion.
7. The charging receiving component according to claim 5, wherein the charging receiving component further includes a first matching circuit for adjusting the working frequency band of the first coil, and the first matching circuit is electrically connected between the two ends of the first wire, or the first matching circuit includes a first sub-matching circuit and a second sub-matching circuit, one end of the first sub-matching circuit is electrically connected to one end of the first wire, the other end of the first sub-matching circuit is grounded, and one end of the second sub-matching circuit is electrically connected to the other end of the first wire, and the other end of the second sub-matching circuit is grounded.
8. The charging receiving assembly according to claim 2, wherein the second coil includes a third coil portion and a fourth coil portion that are electrically connected, the third coil portion is arranged around the magnetic core to generate an induced current under the action of the oscillating magnetic field, and the fourth coil portion is electrically connected to the energy storage circuit.
9. The charging receiving assembly according to claim 8, wherein the third coil portion is formed by winding a second conductive wire, the fourth coil portion is formed by bending the second conductive wire, the fourth coil portion includes a fourth sub-coil portion and a fifth sub-coil portion, the fourth sub-coil portion, the third coil portion and the fifth sub-coil portion are connected in sequence, an end of the fourth sub-coil portion away from the third coil portion is electrically connected to the positive electrode of the energy storage circuit, and an end of the fifth sub-coil portion away from the third coil portion is electrically connected to the negative electrode of the energy storage circuit.
10. The charging receiving component according to claim 8, wherein the charging receiving component further includes a second matching circuit for adjusting the working frequency band of the second coil, and the second matching circuit is electrically connected between the second coil and the energy storage circuit, or one end of the second matching circuit is electrically connected to the second coil, and the other end of the second matching circuit is grounded.
11. A device accessory comprises an accessory body and a charging receiving component according to any one of claims 1 to 10, wherein the accessory body can be mounted on an electronic device, and the charging receiving component is arranged on the accessory body.
12. The device accessory according to claim 11, wherein the device accessory is an electronic writing pen.
13. A device accessory set, comprising a first accessory body, a second accessory body and a charging receiving component according to any one of claims 1 to 10, wherein the first accessory body can be installed on an electronic device, the second accessory body can be installed on the first accessory, the first coil is arranged on the first accessory body, and the first coil and the first accessory body form a first device accessory, the energy storage circuit and the second coil are arranged on the second accessory body, and the energy storage circuit, the second coil and the second accessory body form a second device accessory.
14. The device accessory set according to claim 13, wherein the first device accessory is a protective shell, and the second device accessory is an electronic writing pen.
15. According to the device accessory set according to claim 14, wherein the first accessory body includes a main body portion and a mounting portion connected to the main body portion, the main body portion can be mounted on the electronic device, and the mounting portion is arranged to form a receiving cavity, and at least a portion of the second accessory body can be received in the receiving cavity.
16. The device accessory set according to claim 15, wherein the first coil portion of the first coil is arranged on the main body portion, and the second coil portion of the first coil is arranged on the mounting portion, and when at least a portion of the second accessory body is accommodated in the accommodating cavity, at least a portion of the magnetic core of the charging receiving component is passed through the second coil portion.
17. An electronic component comprises an electronic device and a device accessory group as described in any one of claims 13 to 16, wherein the electronic device comprises a charging and transmitting component, the charging and transmitting component comprises a power supply circuit and an antenna radiator electrically connected to the power supply circuit, and the antenna radiator is used to transmit electromagnetic wave signals.
18. According to the electronic component according to claim 17, the electronic device further includes a display screen and a housing, a receiving space is formed between the display screen and the housing, the power supply circuit and the antenna radiator are both arranged in the receiving space, the first accessory body can be mounted on a side of the housing away from the display screen, and the orthographic projection of the antenna radiator on the surface where the first coil portion of the first coil is located covers at least a portion of the first coil portion.
19. The electronic component according to claim 17, wherein the charging transmitting component also includes a third matching circuit for adjusting the operating frequency band of the antenna radiator, and the third matching circuit is electrically connected between the power supply circuit and the antenna radiator, or one end of the third matching circuit is electrically connected to the antenna radiator, and the other end of the third matching circuit is grounded.
20. The electronic component according to claim 17, wherein the antenna radiator is an FPC antenna radiator or an LDS antenna radiator.