A coil and an electronic device

Abstract

The invention discloses a coil, which includes a multi-layer coil layer and an insulating layer; the coil layer at least includes a first coil layer and a second coil layer; the insulating layer is arranged between adjacent coil layers; the first coil layer includes an outer The first main coil wound to the inner circle, the second coil layer includes the second main coil wound from the inner circle to the outer circle; the coil routing of the first main coil is alternately wound with the coil routing of the second main coil; The outer ring end of the first main coil and the outer ring end of the second main coil are connected to the external electrical signal receiving unit; the first coil layer also includes a first coil corresponding to the wiring of the second main coil; The second coil layer also includes a second secondary coil corresponding to the wiring of the first primary coil. The coil and the electronic equipment provided by the invention can obtain a higher quality factor in a limited space.

Description

technical field

[0001] The invention belongs to the field of coil structure design, and in particular relates to a coil and electronic equipment. Background technique

[0002] Inductance coils are more and more commonly used in electronic equipment, especially in some new applications, such as NFC (Near Field Communication) and wireless charging. The Q value of the coil, also called the quality factor, is the main parameter for evaluating the coil. The higher the Q value of the coil, the smaller the loss and the higher the efficiency.

[0003] The operating frequency of the existing wireless charging coil is relatively high, and there is a relatively high requirement for the Q value of the coil. However, due to cost or space, the thickness of the coil is limited, and the Q value of the coil can only be increased as much as possible in a limited space. Contents of the invention

[0004] The technical problem to be solved by the present invention is to provide a coil and a...

Examples

Embodiment 1

[0048] see figure 1 , figure 2 , image 3 as well as Figure 4, a coil, including a multilayer coil layer and an insulating layer, the current direction in the wiring of the multilayer coil layer is the same; the multilayer coil layer at least includes a first coil layer 1 and a second coil layer 6; the insulating layer is arranged on a phase Between adjacent coil layers; the first coil layer 1 includes a first main coil 2 wound from an outer ring to an inner ring, and the second coil layer 6 includes a second main coil 7 wound from an inner ring to an outer ring; wherein, the first The inner ring routing 3 of a main coil 2 is connected in parallel with the inner ring routing 8 of the second main coil 7; the first main coil 2 except the inner ring routing 3 is connected with the second main coil 7 except the other Coil wiring other than the inner loop wiring 8 is alternately wound; the outer loop end 4 of the first main coil 2 and the outer loop end 9 of the second main co...

Embodiment 2

[0053] On the basis of Embodiment 1, this embodiment has been further improved, the coil also includes a third coil layer, the third coil layer is arranged on the first coil layer 1 side, the third coil layer and the first coil layer 1 An insulating layer is provided between them; or, the third coil layer is arranged on one side of the second coil layer 6, and an insulating layer is provided between the third coil layer and the second coil layer 6; The third main coil of the inner circle, the inner circle wiring of the third main coil is connected in parallel with the inner circle wiring 3 of the first main coil 2 and the inner circle wiring 8 of the second main coil 7; The coil routing other than the coil routing corresponds to the coil routing position of the first main coil 2 except its inner ring routing 3; the outer ring end of the third main coil and the outer ring of the first main coil 2 The end portion 4 is electrically connected.

[0054] Further, the third coil lay...

Embodiment 3

[0061] An electronic device includes the coil in any one of the above embodiments.

technical field

[0001] The invention belongs to the field of coil structure design, and in particular relates to a coil and electronic equipment. Background technique

[0002] Inductance coils are more and more commonly used in electronic equipment, especially in some new applications, such as NFC (Near Field Communication) and wireless charging. The Q value of the coil, also called the quality factor, is the main parameter for evaluating the coil. The higher the Q value of the coil, the smaller the loss and the higher the efficiency.

[0003] The operating frequency of the existing wireless charging coil is relatively high, and there is a relatively high requirement for the Q value of the coil. However, due to cost or space, the thickness of the coil is limited, and the Q value of the coil can only be increased as much as possible in a limited space. Contents of the invention

[0004] The technical problem to be solved by the present invention is to provide a coil and a...

Examples

Embodiment 1

[0048] see figure 1 , figure 2 , image 3 as well as Figure 4, a coil, including a multilayer coil layer and an insulating layer, the current direction in the wiring of the multilayer coil layer is the same; the multilayer coil layer at least includes a first coil layer 1 and a second coil layer 6; the insulating layer is arranged on a phase Between adjacent coil layers; the first coil layer 1 includes a first main coil 2 wound from an outer ring to an inner ring, and the second coil layer 6 includes a second main coil 7 wound from an inner ring to an outer ring; wherein, the first The inner ring routing 3 of a main coil 2 is connected in parallel with the inner ring routing 8 of the second main coil 7; the first main coil 2 except the inner ring routing 3 is connected with the second main coil 7 except the other Coil wiring other than the inner loop wiring 8 is alternately wound; the outer loop end 4 of the first main coil 2 and the outer loop end 9 of the second main co...

Embodiment 2

[0053] On the basis of Embodiment 1, this embodiment has been further improved, the coil also includes a third coil layer, the third coil layer is arranged on the first coil layer 1 side, the third coil layer and the first coil layer 1 An insulating layer is provided between them; or, the third coil layer is arranged on one side of the second coil layer 6, and an insulating layer is provided between the third coil layer and the second coil layer 6; The third main coil of the inner circle, the inner circle wiring of the third main coil is connected in parallel with the inner circle wiring 3 of the first main coil 2 and the inner circle wiring 8 of the second main coil 7; The coil routing other than the coil routing corresponds to the coil routing position of the first main coil 2 except its inner ring routing 3; the outer ring end of the third main coil and the outer ring of the first main coil 2 The end portion 4 is electrically connected.

[0054] Further, the third coil lay...

Embodiment 3

[0061] An electronic device includes the coil in any one of the above embodiments.

Images