A wireless induction coil for mobile phone charging

Abstract

This utility model relates to the field of wireless induction coil technology, specifically a wireless induction coil for mobile phone charging. The wireless induction coil includes a base plate, a connecting ring, an inner coil, and an outer coil. The connecting ring is fixed to the center of the upper surface of the base plate. The inner and outer coils are disposed on the top of the base plate, and the outer coil, inner coil, and connecting ring are distributed from the outside inwards. The base plate includes a substrate, a first connecting groove, and a second connecting groove. The first and second connecting grooves are formed inside one end of the substrate. The first connecting groove is located on one side of the substrate, and the second connecting groove is located on the other side. The inner coil passes through the interior of the first connecting groove, and both ends of the outer coil pass through the interiors of the first and second connecting grooves. The first connecting groove is L-shaped, and the second connecting groove is square. This utility model has the advantages of simple structure, reasonable design, and improved coil charging efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wireless induction coil technology, specifically a wireless induction coil for charging mobile phones. Background Technology

[0002] The wireless induction coil for mobile phone charging is a core component that realizes wireless power transmission based on the principle of electromagnetic induction. It is composed of precision-wound wires and shielding materials. Its essence is to convert electrical energy into magnetic field and then transfer energy between devices through magnetic field coupling, making it a "contactless energy converter".

[0003] Existing wireless induction coils have complex structures and unreasonable designs. In actual use, due to the magnetic leakage phenomenon of a single coil structure and the eddy current loss caused by metal foreign objects, the power conversion efficiency is greatly reduced. To address this problem, the inventors designed a wireless induction coil for mobile phone charging. Utility Model Content

[0004] The purpose of this invention is to provide a wireless induction coil for mobile phone charging, which has the advantages of simple structure, reasonable design, and improved coil charging efficiency, thus solving the problems mentioned in the above-mentioned technical background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wireless induction coil for charging mobile phones, the wireless induction coil including a base plate, a connecting ring, an inner coil and an outer coil; the connecting ring is fixed in the middle of the upper surface of the base plate, the inner coil and the outer coil are arranged on the top of the base plate, and the outer coil, the inner coil and the connecting ring are distributed from the outside to the inside.

[0006] Preferably, the base plate includes a base plate, a first connecting groove and a second connecting groove; the first connecting groove and the second connecting groove are formed inside one end of the base plate, the first connecting groove is disposed on one side of the base plate, the second connecting groove is disposed on the other side of the base plate, the inner coil passes through the interior of the first connecting groove, and the two ends of the outer coil pass through the interior of the first connecting groove and the interior of the second connecting groove.

[0007] Preferably, the first connecting groove is L-shaped and the second connecting groove is square-shaped.

[0008] Preferably, the connecting ring is composed of manganese-zinc ferrite and bismuth telluride thermoelectric particles, with the bismuth telluride thermoelectric particles incorporated inside the manganese-zinc ferrite.

[0009] Preferably, the outer coil is wrapped with a connecting strip, and a base is provided at the bottom of the base plate.

[0010] Preferably, the base includes a semi-ring and a film, the semi-ring being fixed to the lower surface of the base plate, the film being pasted to the lower surface of the base plate, and the film being located inside the two semi-rings.

[0011] Preferably, there are eight semi-rings in total, with two semi-rings forming a group and the two semi-rings facing each other. There are four groups of semi-rings in total, and the four groups of semi-rings are arranged in a circular array with the center of the base plate as the reference.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a wireless induction coil for charging mobile phones. The wireless induction coil includes a base plate, a connecting ring, an inner coil, and an outer coil. The connecting ring is fixed in the middle of the upper surface of the base plate. The inner coil and the outer coil are set on the top of the base plate. The outer coil, the inner coil, and the connecting ring are distributed from the outside to the inside. The overall structure is simple and the design is reasonable. By setting the inner coil and the outer coil, the effective charging area is increased. Furthermore, by driving the two sets of coils simultaneously, the magnetic field is combined to improve efficiency.

[0013] 2. This utility model converts the coil heating into recyclable current through bismuth telluride particles, resulting in a reduced measured temperature rise and extended lifespan of electronic components. Furthermore, the first and second connecting slots define the coil trajectory, and the connecting strip forces the coil to adhere to the substrate, making it less prone to deformation and loosening during long-term use and increasing structural stability. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a structural diagram of the substrate of this utility model; Figure 3 This is a structural diagram of the connecting ring of this utility model.

[0015] The reference numerals and names in the figure are as follows: 1. Base plate; 101. Substrate; 102. First connecting groove; 103. Second connecting groove; 2. Connecting ring; 201. Manganese zinc ferrite; 202. Bismuth telluride thermoelectric particles; 3. Inner coil; 4. Outer coil; 5. Connecting strip; 6. Base; 601. Half ring; 602. Film. Detailed Implementation

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

[0017] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0018] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0019] Please see Figures 1 to 3 The present invention provides an embodiment of a wireless induction coil for charging a mobile phone. The wireless induction coil includes a base plate 1, a connecting ring 2, an inner coil 3, and an outer coil 4. The connecting ring 2 is fixed in the middle of the upper surface of the base plate 1, and the inner coil 3 and the outer coil 4 are disposed on the top of the base plate 1. The outer coil 4, the inner coil 3, and the connecting ring 2 are distributed from the outside to the inside. The base plate 1 provides mechanical support and circuit routing channels. The connecting ring 2 is the magnetic core. The inner coil 3 is placed in the central area and is responsible for the excitation of a strong magnetic field at close range. It is suitable for the tight coupling scenario of the mobile phone receiver. The outer coil 4 is arranged around the inner coil 3 to expand the effective charging area and is compatible with the placement tolerance requirements of devices of different sizes. The base plate 1 includes a base plate 101, a first connecting groove 102 and a second connecting groove 103; the first connecting groove 102 and the second connecting groove 103 are formed inside one end of the base plate 101, the first connecting groove 102 is disposed on one side of the base plate 101, and the second connecting groove 103 is disposed on the other side of the base plate 101. The inner coil 3 passes through the interior of the first connecting groove 102, and both ends of the outer coil 4 pass through the interior of the first connecting groove 102 and the second connecting groove 103. The first connecting groove 102 is L-shaped, and the second connecting groove 103 is square-shaped; The substrate 101 serves as the basic support platform for the entire wireless induction coil, providing a mounting reference surface for other components. The first connecting groove 102 is used to pass through the inner coil 3 and provide limiting guidance. Its L-shaped structure can precisely control the winding path and inter-turn spacing of the inner coil 3, avoiding uneven magnetic field distribution caused by coil offset. The second connecting groove 103 works in conjunction with the first connecting groove 102 to constrain the wiring paths at both ends of the outer coil 4, ensuring the relative position of the outer coil 4 and the inner coil 3 is stable. The connecting ring 2 is composed of manganese zinc ferrite 201 and bismuth telluride thermoelectric particles 202, with the bismuth telluride thermoelectric particles 202 incorporated inside the manganese zinc ferrite 201. Manganese zinc ferrite 201 is a high permeability material that can concentrate and strengthen the alternating magnetic field generated by the coil, thereby improving the efficiency of electromagnetic energy transmission. Bismuth telluride thermoelectric particles 202 are embedded in the ferrite to form a composite structure. The Seebeck effect is used to directly convert the waste heat generated when the coil is working into a weak current feedback system, thereby realizing energy recovery and reducing temperature rise. The outer coil 4 is wrapped with a connecting strip 5, and the bottom of the base plate 1 is provided with a base 6; The connecting strip 5 keeps the coil flat and closely packed by physical restraint, reducing the fluctuation of inductance parameters caused by deformation. The base 6 is used to install the wireless induction coil. The base 6 includes a semi-ring 601 and a film 602. The semi-ring 601 is fixed to the lower surface of the base plate 1, and the film 602 is pasted on the lower surface of the base plate 1. The film 602 is located inside the two semi-rings 601. There are eight semi-rings 601 in total. Two semi-rings 601 are arranged as a group, and the two semi-rings 601 are arranged opposite each other. There are four groups of semi-rings 601. The four groups of semi-rings 601 are arranged in a circular array with the center of the base plate 1 as a reference. The semi-ring 601 provides mechanical positioning anchor points to ensure the horizontal stability of the coil module at the charging position. The film 602 adheres to the lower surface of the base plate 1, thereby fixing the base plate 1 in the required position. Working principle: When the wireless induction coil is needed, the inner coil 3 and the outer coil 4 are first wound up sequentially using the first connecting slot 102 and the second connecting slot 103. With the setting of the connecting strip 5, the outer coil 4 is more flatly fixed on the top of the substrate 101. Then, with the positioning of the semi-ring 601, the film 602 is glued to the bottom of the base plate 1. After the wireless induction coil is fixed in the required position, during charging, the high magnetism of the manganese zinc ferrite 201 enables the outer coil 4 and the inner coil 3 to start working efficiently. With the cooperation of the bismuth telluride thermoelectric particles 202, the heat of the coil is directly converted into current for recovery, thereby improving the charging efficiency.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wireless induction coil for charging a cell phone, characterized by, include: The base plate (1), connecting ring (2), inner coil (3) and outer coil (4) are fixed in the middle of the upper surface of the base plate (1), the inner coil (3) and the outer coil (4) are set on the top of the base plate (1), and the outer coil (4), the inner coil (3) and the connecting ring (2) are distributed from the outside to the inside.

2. A wireless induction coil for charging a mobile phone according to claim 1, wherein, The base plate (1) includes a base plate (101), a first connecting groove (102) and a second connecting groove (103); the first connecting groove (102) and the second connecting groove (103) are opened inside one end of the base plate (101), the first connecting groove (102) is located on one side of the base plate (101), and the second connecting groove (103) is located on the other side of the base plate (101). The inner coil (3) passes through the interior of the first connecting groove (102), and the two ends of the outer coil (4) pass through the interior of the first connecting groove (102) and the second connecting groove (103).

3. A wireless induction coil for charging a mobile phone according to claim 2, wherein, The first connecting groove (102) is L-shaped, and the second connecting groove (103) is square-shaped.

4. A wireless induction coil for charging a mobile phone according to claim 1, wherein, The outer coil (4) is wrapped with a connecting strip (5), and a base (6) is provided at the bottom of the base plate (1).

5. A wireless induction coil for charging a mobile phone according to claim 4, wherein, The base (6) includes a semi-ring (601) and a film (602). The semi-ring (601) is fixed to the lower surface of the base plate (1), and the film (602) is pasted on the lower surface of the base plate (1). The film (602) is located inside the two semi-rings (601).

6. A wireless induction coil for charging a mobile phone according to claim 5, wherein, There are a total of eight semi-rings (601), with two semi-rings (601) forming a group, and the two semi-rings (601) are arranged opposite each other. There are a total of four groups of semi-rings (601), and the four groups of semi-rings (601) are arranged in a circular array with the center of the base plate (1) as the reference.

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