CN209170059U - Wireless device - Google Patents

Abstract

The present disclosure provides a wireless device, including a coil assembly, the coil assembly includes a first coil, a second coil, a first contact, a second contact and a third contact. The second coil is configured to be connected in series with the first coil. The first contact is configured to be connected to a first end of the first coil. The second contact is configured to be connected between the first coil and the second coil. The third contact is configured to be connected to a second end of the second coil. The first contact, the first coil and the second contact form a first circuit loop, and the first contact, the first coil, the second coil and the third contact form a second circuit loop.

Description

wireless device

technical field

The present disclosure relates to a wireless device, and more particularly, to a wireless device having at least two layers of lines.

Background technique

With the development of technology, many electronic devices (such as tablet computers or smart phones) nowadays have the function of wireless charging. The user can place the electronic device on a wireless charging transmitter, so that the wireless charging receiver in the electronic device uses electromagnetic induction or electromagnetic resonance to generate current to charge the battery. Due to the convenience of wireless charging, electronic devices with wireless charging modules are gradually becoming popular among the public.

Generally speaking, a wireless charging device will include a magnetic conductive substrate that carries a coil. Wherein, when the coil is powered on and operates in a wireless charging mode or a wireless communication mode, the magnetic conductive substrate can make the magnetic field lines emitted by the coil more concentrated to obtain better performance. However, the existing coil winding methods cannot meet various requirements for wireless devices, such as better charging, communication performance and smaller thickness.

Therefore, how to design a wireless device that can meet various needs of users is a topic worthy of discussion and resolution.

Utility model content

In view of this, the present disclosure proposes a wireless device to solve the above problems.

Embodiments of the present disclosure provide a wireless device including a coil assembly, the coil assembly includes a first coil, a second coil, a first contact, a second contact, and a third contact. The second coil is configured to be connected in series with the first coil. The first contact is configured to be connected to a first end of the first coil. The second contact is configured to be connected between the first coil and the second coil. The third contact is configured to be connected to a second end of the second coil. The first contact, the first coil and the second contact form a first circuit loop, and the first contact, the first coil, the second coil and the third contact form a second circuit loop.

According to some embodiments of the present disclosure, the first circuit loop operates in a near field communication frequency band, and the second circuit loop operates as a transmitter or a receiver of power transmission.

According to some embodiments of the present disclosure, the second coil surrounds a portion of the first coil.

Embodiments of the present disclosure provide a wireless device including a first coil. The first coil includes a first metal wire and a second metal wire. The first metal wire is arranged on a first plane and has a first helical structure. The second metal wire is disposed on a second plane and has a second helical structure, and the second metal wire is electrically connected to the first metal wire. The first metal wire and the second metal wire extend continuously.

According to some embodiments of the present disclosure, the wireless device further includes a connector disposed on a third plane, and the connector is electrically connected to the first end of the first coil.

According to some embodiments of the present disclosure, the third plane is located between the first plane and the second plane.

According to some embodiments of the present disclosure, the first metal wire is connected in parallel with the second metal wire.

According to some embodiments of the present disclosure, the wireless device further includes a plurality of metal connectors disposed around the connectors to electrically connect the first and second metal wires.

According to some embodiments of the present disclosure, the wireless device further includes a first separation part and a second separation part. The first separation part is disposed between two adjacent turns of the first metal wire. The second separation portion is disposed between two adjacent turns of the second metal wire. The first metal wire has a first inclined section, the second metal wire has a second inclined section, the first separation part is electrically connected to the second metal wire through a conducting element and the second inclined section, and the first The two separation parts are electrically connected to the first metal wire with the first inclined section through another conducting element.

According to some embodiments of the present disclosure, the wireless device further includes a plurality of pseudo metal wires disposed on the first plane and adjacent to a first terminal point and a second terminal point. Furthermore, these pseudo metal wires are electrically independent of each other.

According to some embodiments of the present disclosure, the wireless device further includes a metal block disposed on the first plane, and the pseudo metal wires surround the metal block and are electrically independent from the metal block.

According to some embodiments of the present disclosure, the wireless device further includes at least one electronic component and a plurality of pseudo metal wires. The electronic components are arranged on the second plane. The plurality of pseudo metal wires are disposed on the first plane corresponding to the positions of the electronic components.

According to some embodiments of the present disclosure, the width of the innermost turn of the first helical structure is narrower than the width of the outermost turn of the first helical structure.

According to some embodiments of the present disclosure, the first helical structure has a middle ring, disposed between the innermost ring and the outermost ring, wherein a first slit is formed on the middle ring, and the first slit divides the middle ring into a left The width of the half and a right half, and either the left half or the right half is smaller than the width of the innermost turn of the first helical structure.

According to some embodiments of the present disclosure, the width of each turn of the first helical structure increases from the inside to the outside.

According to some embodiments of the present disclosure, the first metal wire includes a plurality of straight sections and a plurality of curved sections, and the width of each curved section is greater than the width of the connected straight sections

According to some embodiments of the present disclosure, the first metal wire has a plurality of slits, which are respectively formed on the bent sections.

According to some embodiments of the present disclosure, the wrapping directions of the first metal wire and the second metal wire are opposite.

The present disclosure provides a wireless device including a coil unit. In some embodiments, the coil unit may include a first coil and a second coil, the first coil is connected in series with the second coil, the first coil is connected to a first contact and a second contact, and the second coil It is connected to the second contact and the third contact, which means that the second contact is connected between the first coil and the second coil.

Therefore, the first contact, the first coil and the second contact can form a first circuit loop, and the first contact, the first coil, the second coil and the third contact can form a second circuit loop. Wherein, the first circuit loop is operable in a near field communication (NFC) frequency band, and the second circuit loop is operable as a transmitter or a receiver for power transmission to perform the function of wireless charging. Therefore, the wireless device can perform the functions of wireless communication and wireless charging at the same time.

Description of drawings

The present disclosure can be clearly understood from the following detailed description in conjunction with the accompanying drawings. It is emphasized that, in accordance with standard industry practice, the various features are not drawn to scale and are used for illustration purposes only. In fact, the dimensions of various features may thus be arbitrarily expanded or reduced for clarity of illustration.

FIG. 1 is an exploded view of a wireless device according to an embodiment of the present disclosure.

FIG. 2 is a schematic top view of a coil assembly according to an embodiment of the present disclosure.

3 is a schematic structural diagram of a coil assembly in a first plane according to an embodiment of the present disclosure.

FIG. 4 is a schematic structural diagram of a coil assembly in a third plane according to this embodiment of the present disclosure.

FIG. 5 is a schematic structural diagram of the coil assembly in a second plane according to this embodiment of the present disclosure.

6 is a schematic top view of a coil assembly according to another embodiment of the present disclosure.

FIG. 7 is a schematic cross-sectional view of the line segment A-A' in FIG. 6 according to an embodiment of the present disclosure.

FIG. 8 is an enlarged view of region X in FIG. 6 according to an embodiment of the present disclosure.

9 is a schematic top view of a coil assembly of a wireless device according to another embodiment of the present disclosure.

FIG. 10 is a schematic diagram of an upper layer structure of a coil assembly on a first plane according to an embodiment of the present disclosure.

FIG. 11 is a schematic diagram of an underlying structure of a second plane of the coil assembly according to this embodiment of the present disclosure.

12 is a schematic top view of a coil assembly of a wireless device according to another embodiment of the present disclosure.

FIG. 13 is a schematic diagram of the superstructure of the coil assembly in the first plane according to the embodiment of the present disclosure.

FIG. 14 is a schematic diagram of the lower layer structure of the coil assembly in the second plane according to this embodiment of the present disclosure.

15 is a schematic top view of a coil assembly of a wireless device according to another embodiment of the present disclosure.

FIG. 16 is a schematic diagram of a superstructure of a coil assembly in a first plane according to an embodiment of the present disclosure.

FIG. 17 is a schematic diagram of an underlying structure of a second plane of the coil assembly according to this embodiment of the present disclosure.

18 is a schematic top view of a coil assembly of a wireless device according to another embodiment of the present disclosure.

FIG. 19 is a schematic diagram of a superstructure of a coil assembly in a first plane according to an embodiment of the present disclosure.

FIG. 20 is a schematic diagram of an underlying structure of a second plane of the coil assembly according to this embodiment of the present disclosure.

Description of reference numbers:

100 wireless devices

102 Coil assembly

102A Coil Assembly

1021 First plane

1022 Second plane

1023 Third plane

1024 Pseudo metal wire

1025 Pseudo Metal Wire

1026 Metal Blocks

103 First terminal contact

1031 Extension lead

104 Adhesive layer

105 Second terminal contact

106 Magnetic plate

108 substrate

110 Coil Structure

111 first metal wire

1111 First End

1112 Second end

112 Second metal wire

1121 first end

1122 Second end

114 Connectors

116 innermost ring

118 First Intermediate Ring

120 Second Intermediate Ring

1201 Left half

1202 Right half

120S first slit

122 outermost ring

202 Coil Assembly

202A Coil Assembly

2021 First Plane

2022 Second Plane

302 Coil Assembly

3021 First plane

3022 Second plane

304 first metal wire

3041 first end

3043 End

306 Second metal wire

3061 End

3063 Second end

308 Third metal wire

3081 first end

3083 Second end

310 Connection lead

402 Coil Assembly

4021 First plane

4022 Second plane

404 first metal wire

4041 First inclined section

406 Second metal wire

4061 Second inclined section

408 First Separation Section

410 Second Separation Section

CA1, CA2 conduction components

CS Bend Section

CP1 first contact

CP2 second contact

CP3 third contact

MC, MC1, MC2, MC3, MC5, MC6 Metal Connectors

SS straight section

W1, W2, WA, WB, WC, WX width

X area

Detailed ways

In order to make the objects, features, and advantages of the present disclosure more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings. The configuration of each element in the embodiments is for illustration, not for limiting the present disclosure. And some of the reference numerals in the embodiments are repeated for the purpose of simplifying the description, and do not mean the correlation between different embodiments. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only referring to the directions of the attached drawings. Accordingly, the directional terms used are illustrative and not limiting of the present disclosure.

It must be understood that the elements specifically described or illustrated may exist in various forms well known to those skilled in the art. In addition, when a layer is "on" other layers or substrates, it may mean "directly" on other layers or substrates, or a layer is on other layers or substrates, or sandwiched between other layers or substrates other layers.

In addition, relative terms, such as "lower" or "bottom" and "higher" or "top," may be used in the examples to describe the relative relationship of one element to another of the illustrated elements. It will be appreciated that if the illustrated device were turned upside down, elements described on the "lower" side would become elements on the "upper" side.

As used herein, the terms "about" and "approximately" generally mean within 20%, preferably within 10%, and preferably within 5% of a given value or range. The quantity given here is an approximate quantity, which means that the meanings of "about" and "approximately" can still be implied without a specific description.

Please refer to FIG. 1 , which is an exploded view of a wireless device 100 according to an embodiment of the present disclosure. As shown in FIG. 1 , the wireless device 100 may include a coil assembly 102 , an adhesive layer 104 , and a magnetic conductive plate 106 . In this embodiment, the coil assembly 102 is disposed on the magnetic conductive plate 106 , and the coil assembly 102 can be connected to the magnetic conductive plate 106 by using the adhesive layer 104 . Wherein, the adhesive layer 104 can be adhesive tape or any other material that can be used for connection.

In addition, in this embodiment, the magnetic conductive plate 106 may be a ferrite, but not limited thereto. For example, in other embodiments, the magnetic conductive plate 106 may also include nanocrystalline materials. The magnetic conductive plate 106 may have a magnetic permeability corresponding to the coil assembly 102 , so that the electromagnetic waves of the coil assembly 102 are more concentrated.

As shown in FIG. 1 , the coil assembly 102 includes a substrate 108 and a coil structure 110 , and the coil structure 110 is formed on the substrate 108 . In this embodiment, the substrate 108 is a flexible circuit board, but not limited thereto, as long as any substrate that can be used to form the coil structure 110 is within the scope of the present disclosure. Furthermore, the coil assembly 102 can be used as a charging coil for wirelessly charging an external electronic device (eg, a tablet computer or a smart phone).

For example, the coil structure 110 of the coil assembly 102 can be used as a resonant charging coil based on the standard of the Alliance for Wireless Power (A4WP), but is not limited thereto. In addition, the coil structure 110 can be based on the Wireless Power Consortium (WPC) standard, such as the Qi standard, as an inductive charging coil. Therefore, in this embodiment, the wireless device 100 can simultaneously correspond to different charging methods, so as to increase the applicable range. For example, at short distances (eg, below 1 cm), inductive operation is used; while at long distances, resonant operation is used.

Next, please refer to FIGS. 2 to 5 . FIG. 2 is a schematic top view of the coil assembly 102 according to an embodiment of the present disclosure, and FIG. 3 is a schematic structural diagram of a first plane 1021 of the coil assembly 102 according to an embodiment of the present disclosure. 4 is a schematic structural diagram of a third plane 1023 of the coil assembly 102 according to this embodiment of the present disclosure, and FIG. 5 is a structural schematic diagram of a second plane 1022 of the coil assembly 102 according to this embodiment of the present disclosure.

In this embodiment, the substrate 108 of the coil assembly 102 includes a first layer structure, a second layer structure and a third layer structure, which are located on the first plane 1021 , the second plane 1022 and the third plane 1023 respectively, and the third plane 1023 is located between the first plane 1021 and the second plane 1022 . It should be noted that the coil structure 110 in FIG. 5 is located below the second plane 1022, but for the sake of clarity, the coil structure 110 in FIG. 5 is still represented by a solid line.

As shown in FIGS. 3 to 5 , the coil structure 110 (the first coil) of the coil assembly 102 may include a first metal wire 111 , a second metal wire 112 and a connecting member 114 , and the first metal wire 111 is disposed on the first metal wire 111 . On a plane 1021 , the second metal wire 112 is disposed on the second plane 1022 , and the connecting member 114 is disposed on the third plane 1023 . Furthermore, as shown in FIG. 2 , the coil assembly 102 may further have a first terminal contact 103 and a second terminal contact 105 configured to be electrically connected to an external circuit, such as a control chip.

Next, as shown in FIG. 3 , the first metal wire 111 is formed with a first spiral structure having a first end 1111 and a second end 1112 , and the second end 1112 is connected to the second terminal contact 105 . As shown in FIG. 4 , one end of the connecting member 114 is connected to the first terminal contact 103 . In addition, as shown in FIG. 5 , the second metal wire 112 is formed with a second spiral structure having a first end 1121 and a second end 1122 . It should be noted that, in this embodiment, the first metal wire 111 and the second metal wire 112 extend continuously.

Furthermore, the coil assembly 102 may further include a plurality of metal connectors (also referred to as vias, vias) configured to penetrate the substrate 108 to connect the first metal wires 111 and the second metal wires 112 . For example, as shown in FIGS. 2 to 5 , the coil assembly 102 includes a metal connector MC1 and a metal connector MC2 , and the metal connector MC1 is configured to connect the first end 1111 and the connector 114 of the first metal wire 111 . , and the first end 1121 of the second metal wire 112 . Furthermore, the second end 1122 of the second metal wire 112 is electrically connected to the first metal wire 111 through the metal connector MC2 .

As shown in FIG. 3 and FIG. 4 , the coil assembly 102 further includes a metal connector MC3 configured to connect the connector 114 and an extension wire 1031 . In addition, the coil assembly 102 further includes a plurality of metal connectors MC5 and MC6 , which are disposed around the connectors 114 . As shown in FIG. 2 to FIG. 5 , a plurality of metal connectors MC5 and MC6 are respectively disposed on both sides of the connector 114 . The metal connectors MC5 and MC6 are configured to electrically connect the first metal wires 111 and the second metal wires 112 , so that the first spiral structure of the first metal wires 111 and the second spiral structure of the second metal wires 112 can be formed. A part of the structure is connected in parallel, so the effect of reducing the overall impedance of the coil assembly 102 can be achieved, and the number of turns of the coil assembly 102 can also be increased.

Through the structural configuration of the coil assembly 102 in this embodiment, the integrity of the first metal wire 111 and the second metal wire 112 can be maintained, and the first metal wire 111 or the second metal wire 112 will not be cut off due to the provision of the connecting member 114 . Structure.

Next, please refer to FIG. 6 , which is a schematic top view of a coil assembly 102A according to another embodiment of the present disclosure. The coil assembly 102A is similar to the coil assembly 102 . The difference between the two is that, in this embodiment, in order to increase the overall strength of the coil assembly 102A, the coil assembly 102A may further include a plurality of pseudo metal wires disposed on the first plane 1021 . In this embodiment, the coil assembly 102 includes a plurality of pseudo metal wires 1024 and pseudo metal wires 1025 , and the pseudo metal wires 1025 are adjacent to the first terminal contact 103 and the second terminal contact 105 . The pseudo metal wire 1024 and the pseudo metal wire 1025 are electrically independent from the first metal wire 111 and the second metal wire 112 , and the plurality of pseudo metal wires 1024 and the plurality of pseudo metal wires 1025 are electrically connected to each other independent.

By arranging the pseudo metal wire 1024 and the pseudo metal wire 1025, the local hardness of the substrate 108 can be increased, and the pseudo metal wire 1024 and the pseudo metal wire 1025 can be used to position the overall structure, so as to improve the positioning accuracy and assembly. convenience. In this embodiment, the pseudo metal wire 1024 and the pseudo metal wire 1025 are implemented in a linear shape, but not limited thereto, for example, in other embodiments, a circular or rectangular shape can also be implemented.

Furthermore, in this embodiment, the coil assembly 102A may further include a metal block 1026 disposed on the first plane 1021 to further increase the overall strength of the coil assembly 102 . In addition, a plurality of pseudo metal wires 1025 surround the metal block 1026 and are electrically independent from the metal block 1026 .

Furthermore, in the embodiment of the present disclosure, the coil assembly 102A may further include at least one electronic element (not shown in the figure), which is disposed on the second plane 1022, and the position of the electronic element is corresponding to the first plane 1021. The location of the metal block 1025 and part of the pseudo metal wire 1025 . Therefore, the solder joints of the electronic component will not be easily damaged when being impacted, thereby improving the reliability of the wireless device.

Please refer to FIG. 6 and FIG. 7 at the same time. FIG. 7 is a schematic cross-sectional view of the line segment A-A' in FIG. 6 according to an embodiment of the present disclosure. In this embodiment, as shown in FIG. 6 , the coil assembly 102 may further include a plurality of metal connectors MC5 and MC6 , which are disposed on both sides of the first connector 114 . As shown in FIG. 7 , the metal connector MC5 and the metal connector MC6 can connect a part of the first helical structure of the first metal wire 111 to a part of the second helical structure of the second metal wire 112 in parallel, so that the coil assembly can be lowered 102A overall impedance and may also increase the number of turns of the coil assembly 102A.

Furthermore, as shown in FIG. 6 , the first metal wire 111 may include a plurality of straight sections SS and a plurality of curved sections CS. In this embodiment, the width of each curved section CS is greater than the width of the connected straight sections SS. For example, as shown in FIG. 6, the outermost straight section SS has a width W1, and the curved section CS connected thereto has a width W2, and the width W2 is greater than the width W1. Through such structural design, the area of the coil assembly 102A can be reduced, so as to achieve the purpose of miniaturization of the wireless device.

Next, please refer to FIG. 6 and FIG. 8 . FIG. 8 is an enlarged view of the area X in FIG. 6 according to an embodiment of the present disclosure. As shown in FIG. 8 , the first helical structure has an innermost circle 116 , a first intermediate circle 118 , a second intermediate circle 120 and an outermost circle 122 . The innermost ring 116 has a width WA, the outermost ring 122 has a width WX, and the width WA of the innermost ring 116 is narrower than that of the outermost ring 122 . In the embodiment of the present disclosure, the widths of different turns of the first metal wire 111 can be changed correspondingly according to the magnetic field strength. Reduce losses due to eddy currents.

In this embodiment, a plurality of slits may be formed on the first spiral structure of the first metal wire 111 , which are respectively formed on the curved sections CS. Specifically, as shown in FIG. 8 , the first intermediate ring 118 and the second intermediate ring 120 are disposed between the innermost ring 116 and the outermost ring 122 , and a first slit 120S is formed on the second intermediate ring 120 , and the first slit 120S divides the second intermediate ring 120 into a left half 1201 and a right half 1202 . The left half 1201 and the right half 1202 respectively have a width WC, and the width WC is smaller than the width WA of the innermost circle 116 of the first helical structure.

Furthermore, in this embodiment, the width of the first metal wire 111 corresponds to the width of the second metal wire 112 , and the width of each turn of the first spiral structure of the first metal wire 111 increases gradually from the inside to the outside. That is, the width WA is smaller than a width WB of the first middle ring 118 , the width WB is smaller than the width WX of the outermost ring 122 , and the width WC is smaller than the width WA. Based on the structural configuration of this embodiment, the loss of the eddy current can be reduced and the current density can also be made more uniform.

Please refer to FIGS. 9 to 11 . FIG. 9 is a schematic top view of a coil assembly 202 of a wireless device according to another embodiment of the present disclosure, and FIG. 10 is a first plane 2021 of a coil assembly 202 according to an embodiment of the present disclosure. A schematic diagram of the upper layer structure, and FIG. 11 is a schematic diagram of the lower layer structure of a second plane 2022 of the coil assembly 202 according to this embodiment of the present disclosure.

The coil assembly 202 of this embodiment is similar to the aforementioned coil assembly 102, except that in this embodiment, as shown in FIG. The inner side of the wire 112 ), and the first terminal contact 103 is connected to the first end 1111 of the first metal wire 111 . Furthermore, the second terminal contact 105 is disposed outside the first metal wire 111 and connected to the second end 1112 of the first metal wire 111 .

Based on the structural design of this embodiment, the coil assembly 202 can be electrically connected to an external circuit through the first terminal contact 103 to increase the convenience of testing the coil assembly 202 . In addition, since the coil assembly 202 does not need to be provided with the connecting member 114 for cutting off the first metal wire 111 or the second metal wire 112 , the integrity of the coil of the coil assembly 202 can be ensured.

Please refer to FIGS. 12 to 14 . FIG. 12 is a schematic top view of a coil assembly 202A of a wireless device according to another embodiment of the present disclosure, and FIG. 13 is a superstructure of the coil assembly 202A on the first plane 2021 according to an embodiment of the present disclosure. , and FIG. 14 is a schematic diagram of the underlying structure of the coil assembly 202A on the second plane 2022 according to this embodiment of the present disclosure.

The coil assembly 202A of this embodiment is similar to the aforementioned coil assembly 202, except that in this embodiment, as shown in FIG. 13 and FIG. 14 , the first metal wires 111 and the second metal wires 112 are in opposite directions, and pass through the metal The connectors MC are connected in series with each other. The first end 1111 of the first metal wire 111 is electrically connected to the first end 1121 of the second metal wire 112 through the metal connector MC.

In addition, as shown in FIG. 12 and FIG. 14 , the coil assembly 202A further has an extension wire 1031 , and the second end 1122 of the second metal wire 112 is electrically connected to the extension wire 1031 and the first terminal point through the metal connector MC 103. Furthermore, as shown in FIG. 12 and FIG. 13 , the second end 1112 of the first metal wire 111 is connected to the second terminal contact 105 .

Based on the structural design of this embodiment, the coil assembly 202 can improve the working efficiency of the coil, increase the number of turns of the coil, and reduce the overall resistance of the coil assembly 202A.

In addition, in other embodiments of the present disclosure, a plurality of coil assemblies 202A can be stacked, so that the plurality of coil assemblies 202A are connected in parallel with each other through the first terminal contact 103 and the second terminal contact 105, so as to increase the number of turns of the coil and The purpose of reducing the overall resistance.

Please refer to FIGS. 15 to 17 , FIG. 15 is a schematic top view of a coil assembly 302 of a wireless device according to another embodiment of the present disclosure, and FIG. 16 is an upper layer of a first plane 3021 of the coil assembly 302 according to an embodiment of the present disclosure A schematic diagram of the structure, and FIG. 17 is a schematic diagram of an underlying structure of a second plane 3022 of the coil assembly 302 according to this embodiment of the present disclosure.

In this embodiment, the coil assembly 302 of the wireless device includes a first coil, a second coil, a first contact CP1, a second contact CP2, and a third contact CP3. The first coil includes a first metal wire 304 and a second metal wire 306 , which are respectively disposed on the second plane 3022 and the first plane 3021 . In addition, the second coil includes a third metal wire 308, wherein the third metal wire 308 is disposed on the first plane 3021 and surrounds the second metal wire 306 (a part of the first coil).

In this embodiment, as shown in FIG. 17 , the first metal wire 304 of the first coil has a first end 3041 , and the first contact CP1 is configured to be connected to the first end 3041 of the first coil. Next, the first metal wire 304 forms a first helical structure with one end 3043 located inside the first helical structure. The end portion 3043 of the first metal wire 304 is electrically connected to the end portion 3061 of the second metal wire 306 in FIG. 16 through one or more metal connectors MC1 .

As shown in FIG. 16 , the second metal wire 306 forms a second spiral structure, and the second metal wire 306 of the first coil has a second end 3063 disposed outside the second spiral structure. Furthermore, the third metal wire 308 of the second coil has a first end 3081 and a second end 3083 . The first end 3081 is connected to the second end 3063 of the second metal wire 306, so that the second coil is connected to the first coil in series. In addition, the third contact CP3 is configured to be connected to the second end 3083 of the second coil.

In addition, as shown in FIGS. 15 to 17 , the second contact CP2 is configured to be electrically connected to the second end 3063 of the second metal wire 306 and the third metal wire 308 through a connecting wire 310 and two metal connectors MC2 The first end of 3081. That is, the second contact CP2 is configured to be connected between the first coil and the second coil.

Therefore, in this embodiment, the first contact CP1, the first coil and the second contact CP2 can form a first circuit loop, and the first contact CP1, the first coil, the second coil and the third contact CP3 can form a The second circuit loop. It should be noted that, in this embodiment, the first circuit loop is operable in a near field communication (NFC) frequency band, and the second circuit loop is operable as a transmitter or a receiver of power transmission terminal for wireless charging.

Based on the structural design of the coil assembly 302 , the wireless device can be made to perform the functions of wireless communication and wireless charging at the same time, and the purpose of miniaturization of the wireless device can also be realized. In addition, the connection mode of the first coil and the second coil can also be adjusted according to actual needs. For example, the first contact point CP1 , the second contact point CP2 and the third contact point CP3 can be electrically connected to an external control circuit (eg, a control chip). The external control circuit can control the first coil through the first contact CP1 and the second contact CP2, the second coil through the second contact CP2 and the third contact CP3, or control the first coil connected in series through the first contact CP1 and the third contact CP3. coil and second coil.

Please refer to FIGS. 18 to 20 . FIG. 18 is a schematic top view of a coil assembly 402 of a wireless device according to another embodiment of the present disclosure, and FIG. 19 is a first plane 4021 of a coil assembly 402 according to an embodiment of the present disclosure. A schematic diagram of the upper layer structure, and FIG. 20 is a schematic diagram of the lower layer structure of a second plane 4022 of the coil assembly 402 according to this embodiment of the present disclosure.

In this embodiment, the coil assembly 402 of the wireless device includes a first coil and a second coil, the first coil includes a first metal wire 404 disposed on the first plane 4021, and the second coil includes a second metal wire 406, which is arranged on the second plane 4022. As shown in FIG. 19 , the first coil further includes a plurality of first separation parts 408 disposed between two adjacent turns of the first metal wire 404 . As shown in FIG. 20 , the second coil further includes a plurality of second separation parts 410 disposed between two adjacent turns of the second metal wire 406 .

Wherein, as shown in FIG. 19 and FIG. 20 , the first metal wire 404 has a first inclined section 4041 , and the second metal wire 406 has a second inclined section 4061 . The first separation portion 408 can be electrically connected to the second metal wire 406 through a conductive element CA1 and the second inclined section 4061 . Wherein, the conduction component CA1 includes a plurality of metal connectors. Furthermore, the second separation portion 410 can be electrically connected to the first metal wire 404 through another conductive element CA2 and the first inclined section 4041 . In addition, as shown in FIG. 18 , when viewed along the Z-axis direction, the first inclined section 4041 and the second inclined section 4061 overlap each other.

Based on the structural configuration of this embodiment, the coil assembly 402 does not need to additionally provide a lead wire from the innermost side of the first coil or the second coil. In addition, the total length or total area of the first separation part 408 is larger than that of the second separation part 410 , so the number of turns of the coil assembly 402 can be increased and the overall resistance value can be reduced.

The present disclosure provides a wireless device including a coil unit. In some embodiments, the coil unit may include a first coil and a second coil, the first coil is connected in series with the second coil, the first coil is connected to a first contact and a second contact, and the second coil It is connected to the second contact and the third contact, which means that the second contact is connected between the first coil and the second coil.

Therefore, the first contact, the first coil and the second contact can form a first circuit loop, and the first contact, the first coil, the second coil and the third contact can form a second circuit loop. Wherein, the first circuit loop is operable in a near field communication (NFC) frequency band, and the second circuit loop is operable as a transmitter or a receiver for power transmission to perform the function of wireless charging. Therefore, the wireless device can perform the functions of wireless communication and wireless charging at the same time.

Although the embodiments of the present disclosure and their advantages have been disclosed above, it should be understood that any person skilled in the art can make changes, substitutions and modifications without departing from the spirit and scope of the present disclosure. In addition, the protection scope of the present disclosure is not limited to the process, machine, manufacture, material composition, device, method and steps in the specific embodiments described in the specification. It is understood that processes, machines, manufactures, compositions of matter, devices, methods and steps developed now or in the future that can perform substantially the same functions or achieve substantially the same results in the embodiments described herein can be used in accordance with the present disclosure. Therefore, the protection scope of the present disclosure includes the above-mentioned process, machine, manufacture, composition of matter, device, method and steps. Additionally, each claim constitutes a separate embodiment, and the scope of the disclosure also includes combinations of individual claims and embodiments.

Claims (18)

1. a kind of wireless device, which is characterized in that the wireless device includes:

One coil block, comprising:

One first coil；

One second coil is configured to be series at the first coil；

One first contact is configured to be connected to a first end of the first coil；

One second contact is configured to be connected between the first coil and the second coil；And

One third contact is configured to be connected to a second end of second coil；

Wherein first contact, the first coil and second contact, one first circuit loop of formation, and first contact, First, second coil and the third contact form a second circuit circuit.

2. wireless device as described in claim 1, which is characterized in that first circuit loop operation is in near-field communication frequency Band, and the second circuit circuit operation is a transmitting terminal or a receiving end for power transmission.

3. wireless device as claimed in claim 2, which is characterized in that second coil surrounds a part of the first coil.

4. a kind of wireless device, which is characterized in that the wireless device includes:

One first coil, comprising:

One first plain conductor is set to one first plane, has one first helical structure；And

One second plain conductor is set to one second plane, has one second helical structure, and second plain conductor is electrical Connect first plain conductor；

Wherein first plain conductor continuously extends with second plain conductor.

5. wireless device as claimed in claim 4, which is characterized in that the wireless device further includes a connection piece, is set to one Third plane, and the connector is electrically connected at a first end of the first coil.

6. wireless device as claimed in claim 5, which is characterized in that it is second flat with this that the third plane is located at first plane Between face.

7. wireless device as claimed in claim 5, which is characterized in that first plain conductor is parallel to second metal and leads Line.

8. wireless device as claimed in claim 5 further includes multiple metal connecting pieces, is set to around the connector, with electricity Property connects first plain conductor, the second plain conductor.

9. wireless device as claimed in claim 4, which is characterized in that the wireless device further include:

One first separation unit, is set between the two adjacent rings of first plain conductor；And

One second separation unit, is set between the two adjacent rings of second plain conductor；

Wherein first plain conductor has one first angled section, which has one second angled section, should First separation unit is electrically connected at second plain conductor, and this second point by a feed-through assembly and second angled section First plain conductor is electrically connected at by another feed-through assembly and first angled section from portion.

10. wireless device as claimed in claim 4, which is characterized in that the wireless device further includes a plurality of quasi- metallike conducting wire, Be set to first plane, and adjacent to a first terminal contact and a second terminal contact, wherein it is described it is a plurality of it is quasi- seemingly Plain conductor is electrically independent each other.

11. wireless device as claimed in claim 10, which is characterized in that the wireless device further includes a metal blocks, setting In first plane, and a plurality of quasi- metallike conductor loop is around the metal blocks and electrically independent with the metal blocks.

12. wireless device as claimed in claim 4, which is characterized in that the wireless device further include:

An at least electronic component is set to second plane；And

A plurality of quasi- metallike conducting wire, the position corresponding to the electronic component are set to first plane.

13. wireless device as claimed in claim 4, which is characterized in that the width of the innermost circle of first helical structure relatively should The width of the outmost turns of first helical structure is narrow.

14. wireless device as claimed in claim 13, which is characterized in that first helical structure has a mesosphere, setting Between the innermost circle and the outmost turns, one first slit is wherein formed on the mesosphere, which will be among this Circle is divided into a left side and a right side, and the width of the left side or the right side is less than first helical structure The width of the innermost circle.

15. wireless device as claimed in claim 14, which is characterized in that first helical structure by interior circle each outwardly width Degree is cumulative.

16. wireless device as claimed in claim 4, which is characterized in that first plain conductor include multiple linear sections with And multiple curved sections, and the width of each curved section is greater than the width for the linear section being connected.

17. wireless device as claimed in claim 16, which is characterized in that first plain conductor has multiple slits, respectively It is formed in the multiple curved section.

18. wireless device as claimed in claim 4, which is characterized in that first plain conductor and second plain conductor Around contrary.