Metal coil and wireless charging module
By designing a metal coil structure with inner and outer inner recesses, the problem of a lot of metal coil cutting waste in wireless charging module production is solved, and raw material savings and manufacturing costs are achieved.
Patent Information
- Application Number
- CN202420670616.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-02
AI Technical Summary
When producing wireless charging modules, more waste is generated when cutting metal coils, resulting in waste of raw materials and high manufacturing costs.
Design a metal coil, its inner and outer ends have inner recesses, and all areas of the connecting plate are located in the corresponding inner recesses, thereby indenting the recessed position of the coil winding, so that the edge of the incoming material of the metal sheet is close to or equal to the edge of the coil winding , reduce waste production.
Through this structural design, waste generated during the cutting of metal coils is reduced, raw material consumption is saved, and manufacturing costs are reduced.
Smart Images
Figure CN222338049U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wireless charging, and in particular to a metal coil and a wireless charging module. Background Art
[0002] At present, wireless charging technology has been widely popularized. Simply put, the existing wireless charging module includes a substrate and a metal coil arranged on the substrate. There are generally two methods for producing wireless charging modules. The first method is to etch a metal coil on the copper clad board. The second method is to form a metal coil on a metal sheet by cutting, and then press the metal coil to the substrate.
[0003] For the second method, when cutting the metal coil, it is necessary to form a first connection plate and a second connection plate at both ends of the coil winding to facilitate connection and conduction with the circuit on the substrate, wherein the first connection plate is located on the inner side of the coil winding, and the second connection plate is located on the outer side of the coil winding. Since the width of the first connection plate / the second connection plate is often larger than the wire diameter of the coil winding, the first connection plate 2 will protrude inward relative to the inner edge of the coil winding 1 (such as Figure 1 As shown in the figure, the second connecting plate will protrude outward relative to the outer edge of the coil winding. Therefore, the inner edge of the metal sheet material will be smaller than the inner edge of the coil winding by a certain distance, and the outer edge will exceed the outer edge of the coil winding by a certain distance. In other words, a lot of waste will be generated after the metal sheet cuts the metal coil, which can easily lead to waste of raw materials. Utility Model Content
[0004] The technical problem solved by the utility model is to provide a metal coil with less waste when cut, and a wireless charging module with the metal coil.
[0005] In order to solve the above technical problems, the first technical solution adopted by the utility model is: a metal coil, including a coil winding, the inner end of the coil winding is connected to a first connecting disk, the outer end of the coil winding is connected to a second connecting disk, the coil winding has an inner recess and an outer recess, the entire area of the first connecting disk is located in the inner recess, and the entire area of the second connecting disk is located in the outer recess.
[0006] In one embodiment, the coil winding has a wire width reduction section, and the wire width reduction section corresponds to the inner recessed portion and / or the outer recessed portion.
[0007] In one embodiment, the inner concave portion and the outer concave portion are arranged opposite to each other.
[0008] In one embodiment, the coil winding includes a plurality of circular ring circuits nested in sequence from the inside to the outside, each of the circular ring circuits has an opening, the opening is arranged corresponding to the wire diameter width reduction section, two adjacent circular ring circuits are connected by a connecting section, the connecting section connects the ends of the openings of the two adjacent circular ring circuits, the connecting section is located between the inner recessed portion and the outer recessed portion, and the connecting section is a diameter-reducing circuit section.
[0009] In one embodiment, a first through hole is provided on the first connection plate.
[0010] In one embodiment, a second through hole is provided on the second connection plate.
[0011] In order to solve the above technical problems, the second technical solution adopted by the present invention is: a wireless charging module, including the above metal coil.
[0012] In one embodiment, the wireless charging module is a wireless charging receiving module or a wireless charging sending module.
[0013] The beneficial effects of the utility model are: the metal coil has a novel structure, and the first connecting plate and the second connecting plate are respectively indented into the recessed positions of the coil winding, so that the inner edge of the metal sheet material can be close to or even equal to the inner edge of the coil winding in the metal coil, and the outer edge of the metal sheet material can be close to or even equal to the outer edge of the coil winding in the metal coil, thereby reducing the waste generated in the process of cutting the metal sheet to obtain the metal coil, which is beneficial to saving the raw material consumption required for the manufacture of the metal coil, thereby reducing the manufacturing cost of the metal coil. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0015] Figure 1 A schematic diagram of the structure of a local area of a metal coil in the prior art;
[0016] Figure 2 It is a top view of the metal coil according to the first embodiment of the present invention.
[0017] Description of Figure Numbers:
[0018] 1. Coil winding; 11. Inner concave portion; 12. Outer concave portion; 13. Wire width reduction section; 14. Connecting section;
[0019] 2. The first connection plate;
[0020] 3. Second connection plate. DETAILED DESCRIPTION
[0021] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.
[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0025] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.
[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0027] Embodiment 1
[0028] Please refer to Figure 2 , Embodiment 1 of the present invention is: a metal coil for manufacturing a wireless charging module, wherein the metal coil is cut from a metal sheet, such as by laser cutting.
[0029] The metal coil includes a coil winding 1, the inner end of the coil winding 1 is connected to a first connecting disk 2, the outer end of the coil winding 1 is connected to a second connecting disk 3, the coil winding 1 has an inner recess 11 and an outer recess 12, the entire area of the first connecting disk 2 is located in the inner recess 11, and the entire area of the second connecting disk 3 is located in the outer recess 12.
[0030] It should be noted that the entire area of the first connecting disk 2 is located in the inner recess 11, which means that no area of the first connecting disk 2 protrudes inward relative to the inner edge of the coil winding 1; similarly, the entire area of the second connecting disk 3 is located in the outer recess 12, which means that no area of the second connecting disk 3 protrudes outward relative to the outer edge of the coil winding 1.
[0031] In detail, the coil winding 1 has a wire width reduction section 13, and the wire width reduction section 13 corresponds to the inner inner recess 11 and / or the outer inner recess 12. It is easy to understand that the width of the wiring in the wire width reduction section 13 is smaller than the width of the wiring in other areas of the coil winding 1.
[0032] In this embodiment, the inner inner recess 11 is arranged opposite to the outer inner recess 12. In other embodiments, the inner inner recess 11 and the outer inner recess 12 may be arranged in a staggered manner, and the staggered arrangement of the inner inner recess 11 and the outer inner recess 12 means that the inner inner recess 11 and the outer inner recess 12 are on different radial lines of the coil winding 1.
[0033] As a preferred embodiment, the coil winding 1 includes a plurality of circular loops nested in sequence from the inside to the outside, each of the circular loops has an opening, and the opening is arranged corresponding to the wire width reduction section 13. The two adjacent circular loops are connected by a connecting section 14, and the connecting section 14 connects the ends of the openings of the two adjacent circular loops. The connecting section 14 is located between the inner recess 11 and the outer recess 12. The connecting section 14 is a variable diameter line section. Specifically, the wire width at both ends of the connecting section 14 is greater than the wire width in the middle region. In addition, it should be noted that one end of the opening of the innermost circular loop is connected to the first connection disk 2, and one end of the opening of the outermost circular loop is connected to the second connection disk 3.
[0034] It is not difficult to understand that by adopting the above structure, the diameter of the inner edge of the metal sheet can be set to be equal to the diameter of the inner edge of the innermost circular ring circuit, and the diameter of the outer edge of the metal sheet can be set to be equal to the diameter of the outer edge of the outermost circular ring circuit. In this way, the generation of cutting waste can be minimized. At the same time, since the total tool path can be shortened, the above structure is also conducive to increasing the cutting speed of the metal coil.
[0035] Optionally, the first connection plate 2 is provided with a first through hole, and the second connection plate 3 is provided with a second through hole.
[0036] In this embodiment, the coil winding 1 is a double helix structure. In other embodiments, the coil winding 1 may be a single helix structure, a triple helix structure, etc.
[0037] This embodiment also provides a wireless charging module, which includes the above-mentioned metal coil.
[0038] It is easy to understand that the wireless charging module can be either a wireless charging receiving module or a wireless charging sending module.
[0039] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A metal coil, characterized in that: It includes a coil winding, wherein the inner end of the coil winding is connected to a first connecting disk, and the outer end of the coil winding is connected to a second connecting disk. The coil winding has an inner recess and an outer recess, the entire area of the first connecting disk is located in the inner recess, and the entire area of the second connecting disk is located in the outer recess.
2. The metal coil according to claim 1, characterized in that: The coil winding has a wire diameter width reduction section, and the wire diameter width reduction section corresponds to the inner recessed portion and / or the outer recessed portion.
3. The metal coil according to claim 2, characterized in that: The inner concave portion is arranged opposite to the outer concave portion.
4. The metal coil according to claim 3, characterized in that: The coil winding includes a plurality of circular loops nested in sequence from the inside to the outside, each of the circular loops having an opening, the opening being arranged corresponding to the wire width reduction section, two adjacent circular loops being connected via a connecting section, the connecting section connecting the ends of the openings of the two adjacent circular loops, the connecting section being located between the inner recessed portion and the outer recessed portion, and the connecting section being a diameter-reducing line section.
5. The metal coil according to claim 1, characterized in that: The first connecting plate is provided with a first through hole.
6. The metal coil according to claim 1, characterized in that: The second connecting plate is provided with a second through hole.
7. Wireless charging module, characterized by: The metal coil comprises the metal coil described in any one of claims 1 to 6.
8. The wireless charging module according to claim 7, characterized in that: The wireless charging module is a wireless charging receiving module or a wireless charging sending module.