Permanent magnet adsorption system with magnetism gathering structure for wireless charging

Abstract

The utility model relates to the technical field of wireless charging accessories, in particular to a permanent magnet adsorption system with a magnetism gathering structure for wireless charging, which comprises a transmitting end and a receiving end, the transmitting end is provided with a magnetic pole, two end faces of the magnetic pole are respectively pasted with a sealing protection layer, the sealing protection layers and the magnetic pole are coaxially arranged, and the receiving end is provided with a magnetic pole. The magnetic pole comprises a plurality of magnet layers which are uniformly arranged at intervals, a magnetism gathering layer is arranged between every two adjacent magnet layers, and the magnetization direction of the magnet layers is in the direction from the magnetism gathering layers to the sealing protection layer; the receiving end covers the transmitting end, and the periphery of the receiving end is connected to the sealing protection layer. According to the utility model, the wireless charging system is convenient to absorb and position, and the output efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless charging accessories, in particular to a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure. Background Art

[0002] The rapid development of smart mobile devices, especially the widespread popularity of smartphones, has significantly changed people's lifestyles. While mobile phones have become increasingly popular and convenient, they have also become increasingly indispensable. To ensure that these devices remain accessible for daily life and work, convenient and fast charging is paramount. Existing wired charging methods require frequent plugging and unplugging, making them prone to damage and inconvenient to use.

[0003] In related technologies, wireless charging uses a permanent magnetic adsorption structure to facilitate docking. Its transmitting and receiving ends are both concentric circular planar two-pole permanent magnet structures. The soft magnetic core of the wireless charging transmitting end is located in the center of the circular permanent magnet. However, this magnetic circuit structure has a low degree of closure and is prone to magnetic leakage. When high-power wireless power transmission is required, the working point of the magnetic core will enter the protection zone, resulting in a decrease in the magnetic permeability of the material and severe heating of the charger. Utility Model Content

[0004] The main purpose of the utility model is to provide a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure, aiming to make the wireless charging system easy to adsorb and position, and have high output efficiency.

[0005] To achieve the above objectives, the present invention proposes a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure, comprising a transmitting end and a receiving end:

[0006] The transmitting end is provided with a magnetic pole, and both end surfaces of the magnetic pole are respectively applied with a sealing protective layer, the sealing protective layer and the magnetic pole are coaxially arranged, the magnetic pole includes a plurality of magnet layers evenly spaced, a magnetic focusing layer is provided between adjacent magnet layers, and the magnetization direction of the magnet layer is along the direction from the magnetic focusing layer to the sealing protective layer; and

[0007] The receiving end cover is arranged on the transmitting end, and the periphery of the receiving end is connected to the sealing protection layer.

[0008] In one embodiment of the present application, the height of the sealing protection layer is greater than the height of the magnetic pole, and the sealing protection layer covers the magnetic pole.

[0009] In one embodiment of the present application, a guide groove is formed on the end surface of the sealing protection layer facing the receiving end, and the guide groove surrounds the periphery of the magnetic pole.

[0010] In one embodiment of the present application, there are multiple groups of guide grooves, and the multiple groups of guide grooves are evenly spaced circumferentially on the sealing protective layer. The guide grooves of adjacent sealing protective layers have the same corresponding axial positions, and the adjacent guide grooves are clamped between the two sealing protective layers and the magnetic poles to form a magnetic focusing portion.

[0011] In one embodiment of the present application, the height of the magnetic focusing layer is the same as the height of the sealing protective layer, and the horizontal height of the bottom surface of the magnetic focusing layer is the same as the horizontal height of the bottom surface of the sealing protective layer. The magnetic focusing layer is provided with a matching groove relative to the guide groove, and the matching groove is connected to the periphery of the magnetic focusing part.

[0012] In one embodiment of the present application, the magnetic pole is made of permanent magnetic material, and the sealing protection layer, the magnetic focusing layer, and the receiving end are all made of soft magnetic material.

[0013] The technical solution of the utility model adopts a method of structurally dividing the permanent magnetic adsorption system into a receiving end and a transmitting end. The transmitting end is provided with a magnetic pole, which is made of permanent magnet material and is used to assist the connection between the electronic device and the wireless charger. It can also be used to send charging signals. The magnetic pole is wrapped into a cylindrical shape, and its inner and outer walls are connected with a sealing protective layer. The sealing protective layer completely covers the magnetic pole, which can avoid magnetic leakage and improve the efficiency of adsorption and positioning. The magnetic pole can be composed of multiple magnet layers, and a magnetic focusing layer is provided in the adjacent magnet layers. The magnetization direction of the magnet layer is also the magnetic direction, from the magnetic focusing layer to the corresponding sealing protective layer. That is to say, the magnetic directions of adjacent magnet layers are opposite, and the starting point is on the magnetic focusing layer. When the receiving end cover is set and positioned, the magnetic focusing layer is completely inside the receiving end, which can play a role in magnetic focusing, reduce magnetic leakage, and improve output. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0015] Figure 1 This is a structural diagram of an embodiment of a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure of the present invention;

[0016] Figure 2 This is a cross-sectional view of an embodiment of a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure according to the present invention.

[0017] Description of Figure Numbers:

[0018] 1. Transmitting end; 2. Magnetic pole; 21. Magnet layer; 3. Magnetic focusing layer; 4. Sealing protection layer; 41. Guide groove; 5. Magnetic focusing part; 6. Receiving end.

[0019] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0021] Reference Figures 1 to 2 In one embodiment of the utility model, a permanent magnetic adsorption system for wireless charging with a magnetic focusing structure is proposed, including a transmitting end 1 and a receiving end 6, the transmitting end 1 is provided with a magnetic pole 2, and the two end surfaces of the magnetic pole 2 are respectively adhered with a sealing protective layer 4, the sealing protective layer 4 and the magnetic pole 2 are coaxially arranged, the magnetic pole 2 includes a plurality of magnet layers 21 evenly spaced, and a magnetic focusing layer 3 is provided between adjacent magnet layers 21, and the magnetization direction of the magnet layer 21 is along the magnetic focusing layer 3 toward the sealing protective layer 4; the receiving end 6 is covered on the transmitting end 1, and the periphery of the receiving end 6 is connected to the sealing protective layer 4.

[0022] In a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure of the present application, the permanent magnetic adsorption system is structurally divided into a receiving end 6 and a transmitting end 1. The transmitting end 1 is provided with a magnetic pole 2, which is made of permanent magnet material and is used to assist the connection between the electronic device and the wireless charger, and can also be used to send charging signals. The magnetic pole 2 is wrapped into a cylindrical shape, and its inner and outer walls are connected with a sealing protective layer 4. The sealing protective layer 4 completely covers the magnetic pole 2, which can avoid magnetic leakage and improve the efficiency of adsorption and positioning. The magnetic pole 2 can be composed of multiple magnet layers 21, and a magnetic concentrating layer 3 is provided in the adjacent magnet layer 21. The magnetization direction of the magnet layer 21 is also the magnetic direction, from the magnetic concentrating layer 3 to the corresponding sealing protective layer 4. That is to say, the magnetic directions of adjacent magnet layers 21 are opposite, and the starting point is on the magnetic concentrating layer 3. When the receiving end 6 is covered and positioned, the magnetic concentrating layer 3 is completely inside the receiving end 6, which can play a role in magnetic concentrating, reduce magnetic leakage, and improve output.

[0023] See also Figures 1 to 2 In one embodiment of the present application, the height of the sealing protection layer 4 is greater than the height of the magnetic pole 2 , and the sealing protection layer 4 covers the magnetic pole 2 .

[0024] In a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure of the present application, the height of the sealing protective layer 4 is greater than the height of the magnetic pole 2, and the magnetic pole 2 can be more completely wrapped therein. The two sealing protective layers 4 can form a groove to guide the magnetic field, reduce magnetic leakage, and thus improve the wireless charging power.

[0025] See also Figure 1 In one embodiment of the present application, a guide groove 41 is provided on the end surface of the sealing protection layer 4 facing the receiving end 6 , and the guide groove 41 surrounds the periphery of the magnetic pole 2 .

[0026] In a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure of the present application, a guide groove 41 is provided on the end face of the sealing protection layer 4 facing the receiving end 6. The horizontal height of the bottom edge of the guide groove 41 is greater than or equal to the horizontal height of the top of the magnetic pole 2. While being used to guide the magnetic field, it also has the function of protecting the magnetic pole 2, which can make the entire device more convenient for positioning and adsorption.

[0027] See also Figures 1 to 2 In one embodiment of the present application, multiple groups of guide grooves 41 are provided, and the multiple groups of guide grooves 41 are evenly spaced circumferentially on the sealing protective layer 4. The guide grooves 41 of adjacent sealing protective layers 4 have the same corresponding axial positions, and the adjacent guide grooves 41 are sandwiched between the two sealing protective layers 4 and the magnetic poles 2 to form a magnetic focusing portion 5.

[0028] In a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure of the present application, multiple groups of guide grooves 41 are evenly spaced circumferentially on the sealing protective layer 4, so that the magnetic pole 2, the sealing protective layer 4 and the guide grooves 41 are sandwiched to form a magnetic concentrating portion 5. The guide grooves 41 can guide the magnetic field to converge on both sides, and two adjacent guide grooves 41 can make the magnetic field converge in the middle, which can strengthen the magnetic field, improve the adsorption effect, and make the entire structure easy to position.

[0029] See also Figure 2 In one embodiment of the present application, the height of the magnetic focusing layer 3 is the same as the height of the sealing protective layer 4, and the horizontal height of the bottom surface of the magnetic focusing layer 3 is the same as the horizontal height of the bottom surface of the sealing protective layer 4. The magnetic focusing layer 3 is provided with a matching groove relative to the guide groove 41, and the matching groove is connected to the periphery of the magnetic focusing part 5.

[0030] In a permanent magnetic adsorption system for wireless charging with a magnetic focusing structure of the present application, the height of the magnetic focusing layer 3 is the same as the height of the sealing protection layer 4. In an embodiment of the present application, two groups of magnet layers 21 are provided, and one group of magnetic focusing layers 3 is provided. The magnetic focusing layer 3 and the sealing protection layer 4 are coaxially arranged and at the same height as the sealing protection layer 4. The starting point of the magnetic field direction of the two adjacent magnet layers 21 is in the magnetic focusing layer 3, and the magnetic field directions are opposite. The height of the magnetic focusing layer 3 is completely consistent with the sealing protection part, which can be conducive to the magnetic field gathering at the soft magnetic material of the magnetic focusing layer 3, and can improve the adsorption strength, making the system more convenient to use.

[0031] See also Figures 1 to 2 In one embodiment of the present application, the magnetic pole 2 is made of permanent magnetic material, and the sealing protection layer 4, the magnetic focusing layer 3, and the receiving end 6 are all made of soft magnetic material.

[0032] In a permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure in the present application, the magnetic pole 2 and magnet layer 21 are made of permanent magnetic materials, while the sealing protective layer 4, magnetic concentrating layer 3, and receiving end 6 are all made of soft magnetic materials. The sealing protective layer 4 can effectively clamp the entire magnetic pole 2 to prevent magnetic flux leakage from the magnetic pole 2. The receiving end 6 is also made of soft magnetic material, which can effectively cooperate with the sealing protective layer 4 and magnetic concentrating layer 3 to concentrate the magnetic field, thereby improving the performance of the entire device. The materials used for the general permanent magnets can be: sintered ferrite, neodymium iron boron, samarium cobalt, etc.; or bonded permanent magnet ferrite; neodymium iron boron; samarium iron nitride or a mixture of these materials; the adhesive can be: rubber, nylon, PPS, epoxy resin, etc.; hot extrusion or injection molding is used for molding; and the soft magnetic materials in the structure can be: low carbon steel, ferritic or martensitic stainless steel, various iron-nickel / iron-cobalt alloys, iron-based amorphous materials, etc. These materials and structures can effectively reduce magnetic flux leakage and improve the transmission efficiency of wireless charging.

[0033] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure, characterized in that: include: A transmitting end, wherein the transmitting end is provided with a magnetic pole, and both end surfaces of the magnetic pole are respectively applied with a sealing protective layer, the sealing protective layer and the magnetic pole are coaxially arranged, the magnetic pole includes multiple evenly spaced magnet layers, a magnetic focusing layer is provided between adjacent magnet layers, and the magnetization direction of the magnet layer is along the direction from the magnetic focusing layer to the sealing protective layer; and A receiving end, the receiving end cover is arranged on the transmitting end, and the periphery of the receiving end is connected to the sealing protection layer.

2. The permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure according to claim 1, characterized in that: The height of the sealing protection layer is greater than the height of the magnetic pole, and the sealing protection layer covers the magnetic pole.

3. The permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure according to claim 2, characterized in that: A guide groove is formed on the end surface of the sealing protection layer facing the receiving end, and the guide groove surrounds the periphery of the magnetic pole.

4. The permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure according to claim 3, characterized in that: There are multiple groups of guide grooves, which are evenly spaced circumferentially on the sealing protective layer. The guide grooves of adjacent sealing protective layers have the same corresponding axial positions, and the adjacent guide grooves are sandwiched between the two sealing protective layers and the magnetic poles to form a magnetic concentrating portion.

5. The permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure according to claim 4, characterized in that: The height of the magnetic focusing layer is the same as the height of the sealing protection layer, and the horizontal height of the bottom surface of the magnetic focusing layer is the same as the horizontal height of the bottom surface of the sealing protection layer. The magnetic focusing layer is provided with a matching groove relative to the guide groove, and the matching groove is connected to the periphery of the magnetic focusing part.

6. The permanent magnetic adsorption system for wireless charging with a magnetic concentrating structure according to claim 1, characterized in that: The magnetic pole is made of permanent magnetic material, and the sealing protection layer, the magnetic focusing layer and the receiving end are all made of soft magnetic material.

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