An electronic device

Abstract

The application provides an electronic device, comprising a wireless charging chip, a first coil, a second coil and a touch chip; wherein a first end of the first coil is connected to a first pin of the wireless charging chip, a second end of the first coil is connected to a second pin of the wireless charging chip; a third end of the first coil is arranged at a middle position of the first coil and is connected to a common ground; the second coil is coupled with the first coil to form a coupling capacitor, and one end of the second coil is connected to a signal receiving pin of the touch chip. The wireless charging coil and another coil are coupled to form a coupling capacitor, which is used as a capacitor of the touch chip to realize a touch function, so that the area where the wireless charging coil is located realizes two functions, and the internal space of the electronic device is saved.

Description

Technical Field

[0001] This invention relates to the field of electronic technology, and more particularly to an electronic device. Background Technology

[0002] Wireless charging is now widely used. However, adding other components to wireless charging would result in a larger electronic product size. Therefore, how to add other functions to wireless charging without affecting the product size has become an urgent problem to be solved. Summary of the Invention

[0003] The present invention aims to solve the above-mentioned problems.

[0004] The main objective of this invention is to provide an electronic device.

[0005] To achieve the above objectives, the technical solution of the present invention is specifically implemented as follows:

[0006] The present invention provides an electronic device, comprising: a wireless charging chip, a first coil, a second coil, and a touch chip; wherein, a first end of the first coil is connected to a first pin of the wireless charging chip, and a second end of the first coil is connected to a second pin of the wireless charging chip; a third end of the first coil is disposed at the middle position and connected to a common ground; the second coil is coupled to the first coil to form a coupling capacitor, and one end of the second coil is connected to a signal receiving pin of the touch chip.

[0007] The electronic device also includes: a matching circuit; one end of the second coil is connected to the signal receiving pin of the control chip through the matching circuit.

[0008] The matching circuit includes either a capacitor or a resistor.

[0009] The first coil is a ring coil wound in a preset direction, and the second coil is a ring coil wound in the opposite direction to the preset direction; the first coil and the second coil are intertwined in the same plane.

[0010] A touch device is provided above the plane where the first coil and the second coil are wound.

[0011] As can be seen from the technical solution provided by the present invention, the present invention provides an electronic device that makes reasonable use of the coupling of a wireless charging coil with another coil to form a coupling capacitor, which serves as the capacitor of the touch chip to realize the touch function. This enables the area where the wireless charging coil is located to realize two functions, saving internal space of the electronic device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of an electronic device provided in an embodiment of the present invention;

[0014] Figure 2 Another schematic diagram of the electronic device provided in the embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of coil winding provided in an embodiment of the present invention. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0017] The embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of an electronic device provided in an embodiment of the present invention is shown. See also: Figure 1 The electronic device provided in this embodiment of the invention includes: a wireless charging chip, a first coil, a second coil, and a touch chip; wherein,

[0019] The first end of the first coil is connected to the first pin of the wireless charging chip, and the second end of the first coil is connected to the second pin of the wireless charging chip; the third end of the first coil is located in the middle and connected to the common ground.

[0020] The second coil is coupled to the first coil to form a coupling capacitor, and one end of the second coil is connected to the signal receiving pin of the touch chip.

[0021] Specifically, the first coil, as a wireless charging coil, is electrically connected to the wireless charging chip to realize the wireless charging function of the electronic device. The second coil is coupled to the first coil to form a coupling capacitor, which is connected to the signal receiving pin of the touch chip to realize the touch function. This makes reasonable use of the space of the wireless charging coil and achieves the goal of realizing both wireless charging and touch functions in the same area.

[0022] The wireless charging chip can be CPS4018, and the touch chip can be BS83A02C. In practical applications, the model can be selected according to the needs. This invention does not specifically limit the chip signal.

[0023] As an optional implementation of this invention, see Figure 2 The electronic device provided in this embodiment of the invention further includes: a matching circuit; one end of the second coil is connected to the signal receiving pin of the touch chip through the matching circuit. Depending on the type of touch chip and the specific requirements, the matching circuit, in conjunction with a coupling capacitor, can enable the touch function of the touch chip. The matching circuit includes either a capacitor or a resistor. The selection of the matching circuit can be based on the actual needs of the touch chip.

[0024] As an optional implementation of this invention, see Figure 3 The first coil is a ring coil wound in a preset direction, and the second coil is a ring coil wound in the opposite direction. The first and second coils are intertwined on the same plane. To make efficient use of the space of the wireless charging coil, the first and second coils are wound in rings, increasing the coil length and expanding the touch area. A touch device is positioned above the plane where the first and second coils are wound. Expanding the touch area to the area of ​​the wireless charging coil improves the utilization rate of the internal structure of the electronic device, thereby reducing its size. Furthermore, the shape formed by the first and second coils can be determined according to actual conditions, such as being circular or square, and this is not specifically limited in this invention.

[0025] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electronic device, characterized in that, include: The system includes a wireless charging chip, a wireless charging coil, a second coil, and a touch chip; among which, The first end of the wireless charging coil is connected to the first pin of the wireless charging chip, and the second end of the wireless charging coil is connected to the second pin of the wireless charging chip; a third end is provided at the middle position of the wireless charging coil and connected to the common ground. The second coil is coupled to the wireless charging coil to form a coupling capacitor, which serves as the capacitor of the touch chip to realize the touch function, so that the wireless charging coil area can realize both wireless charging and touch functions. One end of the second coil is connected to the signal receiving pin of the touch chip. The wireless charging coil is a ring coil wound in a preset direction, and the second coil is a ring coil wound in the opposite direction to the preset direction; the wireless charging coil and the second coil are intertwined in the same plane. A touch device is provided above the plane where the wireless charging coil and the second coil are wound.

2. The electronic device according to claim 1, characterized in that, Also includes: Matching circuit; One end of the second coil is connected to the signal receiving pin of the touch chip through the matching circuit.

3. The electronic device according to claim 2, characterized in that, The matching circuit includes a capacitor or a resistor.

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