Magnetic isolation assembly, magnetic attraction assembly, wireless charging device and electronic device

Abstract

The application provides a magnetic isolation assembly, a magnetic attraction assembly, a wireless charging device and an electronic device. The magnetic isolation assembly comprises a first magnetic isolation member, a second magnetic isolation member arranged on one side of the first magnetic isolation member, the first magnetic isolation member and the second magnetic isolation member having a first gap, and a third magnetic isolation member arranged on the side of the first magnetic isolation member away from the second magnetic isolation member, the first magnetic isolation member and the third magnetic isolation member having a second gap, the first magnetic isolation member, the second magnetic isolation member and the third magnetic isolation member enclosing a receiving groove. When the magnetic isolation assembly is applied to the wireless charging device or the electronic device, the wireless charging efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of electronics, specifically to a magnetic shielding component, a magnetic attraction component, a wireless charging device, and an electronic device. Background Technology

[0002] Wireless charging devices are used to charge electronic devices (such as mobile phones, tablets, etc.). The transmitting end of the wireless charging device (the transmitter, or TX end) transmits energy through its coil to the receiving end of the electronic device (the receiver, or RX end) via its coil, thus achieving wireless charging. To ensure better alignment between the coils of the wireless charging device and the electronic device, magnets are typically placed on both devices. This allows for more precise alignment and attracts the electronic device to the wireless charging device, preventing misalignment that could affect charging efficiency and speed. However, the magnetic field lines generated by the magnet at the transmitting end will not be completely confined to the magnet at the receiving end. Some of them will still escape, causing the magnetic field lines generated by the magnet to partially enter the magnetic core (such as nanocrystals) of the wireless charging module at the receiving end of the electronic device and / or the magnetic core of the wireless charging module at the transmitting end. This induces a bias magnetic field in the magnetic core, making its magnetic flux density during actual operation closer to the saturation magnetic flux density Bs (Saturation magnetic flux density), which means that magnetic saturation is more likely to occur, reducing the charging efficiency of the electronic device. Summary of the Invention

[0003] This application provides a magnetic shielding component, which can improve wireless charging efficiency when applied to wireless charging devices or electronic devices.

[0004] In a first aspect, embodiments of this application provide a magnetic shielding component, which includes:

[0005] First magnetic shielding component;

[0006] A second magnetic shielding element is disposed on one side of the first magnetic shielding element, and the first magnetic shielding element and the second magnetic shielding element have a first gap; and

[0007] The third magnetic shielding component is disposed on the side of the first magnetic shielding component away from the second magnetic shielding component. The first magnetic shielding component and the third magnetic shielding component have a second gap. The first magnetic shielding component, the second magnetic shielding component and the third magnetic shielding component form a receiving groove.

[0008] Secondly, embodiments of this application also provide a magnetic attraction component, which includes:

[0009] The magnetic shielding component described in the first aspect of this application; and

[0010] A magnet, which is disposed within the receiving groove of the magnetic shielding assembly.

[0011] Thirdly, embodiments of this application also provide a wireless charging device, which includes:

[0012] Wireless charging module for transmitter; and

[0013] The magnetic attraction component described in the second aspect of this application is arranged around the outer periphery of the transmitter wireless charging module.

[0014] Fourthly, embodiments of this application also provide an electronic device, which includes:

[0015] Receiver wireless charging module; and

[0016] The magnetic attraction component described in the second aspect of this application is arranged around the outer periphery of the receiving wireless charging module.

[0017] The magnetic shielding assembly of this application embodiment includes a first magnetic shielding member, a second magnetic shielding member, and a third magnetic shielding member arranged sequentially at intervals. The first magnetic shielding member, the second magnetic shielding member, and the third magnetic shielding member form a receiving groove, which is used to receive a magnet. When the magnetic shielding assembly of this application embodiment is applied to a wireless charging device to receive the transmitting magnet of the wireless charging device, it can better prevent the overflow of magnetic field lines generated by the transmitting magnet, and prevent the magnetic field lines generated by the transmitting magnet from entering the transmitting magnetic core of the wireless charging device and the receiving magnetic core of the electronic device. This can reduce the bias magnetic field generated in the transmitting and receiving magnetic cores, improve the anti-saturation characteristics of the transmitting and receiving magnetic cores, enhance the inductance and coupling effect of the transmitting and receiving magnetic cores, and thus improve the charging efficiency of the wireless charging device. Similarly, when the magnetic shielding component of this application embodiment is applied to an electronic device to house the receiving magnet of the electronic device, it can better prevent the overflow of magnetic field lines generated by the receiving magnet, and prevent the magnetic field lines generated by the receiving magnet from entering the transmitting magnetic core of the wireless charging device and the receiving magnetic core of the electronic device. This can reduce the bias magnetic field generated in the transmitting and receiving magnetic cores, improve the anti-saturation characteristics of the transmitting and receiving magnetic cores, enhance the inductance and coupling effect of the transmitting and receiving magnetic cores, and thus improve the efficiency of wireless charging. Furthermore, the first magnetic shielding component and the second magnetic shielding component have a first gap, and the first magnetic shielding component and the third magnetic shielding component have a second gap. Compared with the scheme in which the first magnetic shielding component, the second magnetic shielding component, and the third magnetic shielding component abut against each other in sequence or are connected to each other, the magnetic shielding component of this application has a better magnetic shielding effect. When used to accommodate a magnet, it can better prevent the overflow of magnetic lines of force generated by the magnet in the accommodating slot, better reduce the bias magnetic field generated in the transmitting end magnetic core and the receiving end magnetic core, better improve the anti-saturation characteristics of the transmitting end magnetic core and the receiving end magnetic core, better improve the inductance and coupling effect of the transmitting end magnetic core and the receiving end magnetic core, and thus better improve the efficiency of wireless charging. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a magnetic shielding component according to an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the structure of a magnetic shielding component according to an embodiment of this application from another perspective.

[0021] Figure 3This is a schematic diagram of the planar structure of a magnetic shielding component according to an embodiment of this application.

[0022] Figure 4 yes Figure 3 Enlarged view of the area within the dashed box I.

[0023] Figure 5 This application describes a magnetic shielding component along... Figure 3 A schematic diagram of the cross-section along the AA direction.

[0024] Figure 6 yes Figure 5 Enlarged view of the area within the dashed box II.

[0025] Figure 7 This is a schematic diagram of the structure of a magnetic suction component according to an embodiment of this application.

[0026] Figure 8 This is an exploded structural diagram of a magnetic suction component according to an embodiment of this application.

[0027] Figure 9 This is a schematic diagram of the structure of a magnet according to an embodiment of this application.

[0028] Figure 10 This is a schematic diagram of the planar structure of a magnetic suction component according to an embodiment of this application.

[0029] Figure 11 A magnetic suction component according to an embodiment of this application is along Figure 10 A schematic diagram of the cross-section along the BB direction.

[0030] Figure 12 yes Figure 11 Enlarged view of area III within the dashed box.

[0031] Figure 13 This is a schematic diagram of the structure of a wireless charging device according to an embodiment of this application.

[0032] Figure 14 This is an exploded structural diagram of a wireless charging device according to an embodiment of this application.

[0033] Figure 15 This is a circuit block diagram of a wireless charging device according to an embodiment of this application.

[0034] Figure 16 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application.

[0035] Figure 17 This is a schematic diagram of the arrangement of the wireless charging module and magnetic component in an electronic device according to an embodiment of this application.

[0036] Figure 18 This is a circuit block diagram of an electronic device according to an embodiment of this application.

[0037] Figure 19 These are magnetic field distribution cloud maps of the receiving end magnetic cores of Embodiments 2, 4, 5 and 7, where (a) is the distribution cloud map of Embodiment 2, (b) is the distribution cloud map of Embodiment 4, (c) is the distribution cloud map of Embodiment 5 and (d) is the distribution cloud map of Embodiment 7.

[0038] Figure 20 These are magnetic field distribution cloud maps of the receiving end magnetic cores of Comparative Example 1 and Comparative Example 2, where (a) is the distribution cloud map of Comparative Example 1 and (b) is the distribution cloud map of Comparative Example 2.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100 - Magnetic shielding component, 10 - First magnetic shielding element, 11 - First sub-notch, 20 - Second magnetic shielding element, 21 - Second sub-notch, 30 - Third magnetic shielding element, 31 - Third sub-notch, 101 - First gap, 102 - Second gap, 103 - Receiving groove, 104 - Notch, 200 - Magnetic attraction component, 210 - Magnet, 211 - Sub-magnet component assembly, 2111 - Sub-magnet, 300 - Wireless charging device, 310 - Transmitter Wireless charging module, 311-transmitter coil, 312-transmitter magnetic core, 320-first processor, 330-first memory, 340-housing, 350-cover, 341-installation space, 400-electronic device, 410-receiver wireless charging module, 411-receiver coil, 412-receiver magnetic core, 420-second processor, 430-second memory, 440-display, 450-power supply module. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0042] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0043] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0044] It should be noted that, for ease of explanation, the same reference numerals denote the same components in the embodiments of this application, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0045] Wireless charging devices are used to charge electronic devices (such as mobile phones, tablets, etc.). The transmitting end of the wireless charging device (the transmitter, or TX end) transmits energy through its coil to the receiving end of the electronic device (the receiver, or RX end) via its coil, thus achieving wireless charging. To ensure better alignment between the coils of the wireless charging device and the electronic device, magnets are typically placed on both devices. This allows for more precise alignment and attracts the electronic device to the wireless charging device, preventing misalignment that could affect charging efficiency and speed. However, the magnetic field lines generated by the magnet at the transmitting end will not be completely confined to the magnet at the receiving end; some will still escape. This causes the magnetic field lines generated by the magnet to partially enter the magnetic core (such as a nanocrystal) of the wireless charging module at the receiving end of the electronic device and / or the magnetic core of the wireless charging module at the transmitting end. This induces a bias magnetic field within the magnetic core. In addition, the magnetic poles of the magnet at the receiving end facing the wireless charging module at the receiving end will also generate a bias magnetic field on the nanocrystal. As a result, the magnetic induction intensity of the nanocrystal during actual operation is closer to the saturation magnetic flux density Bs (Saturation magnetic flux density), meaning that magnetic saturation is more likely to occur. This reduces the inductance and coupling effect of the wireless charging module at the transmitting end and / or the wireless charging module at the receiving end, reduces the efficiency of wireless charging, increases the heat generated by the wireless charging device and electronic device during wireless charging, and further reduces the charging efficiency of the electronic device.

[0046] Please see Figures 1 to 4 This application provides a magnetic shielding assembly 100, which includes a first magnetic shielding component 10, a second magnetic shielding component 20, and a third magnetic shielding component 30. The second magnetic shielding component 20 is disposed on one side of the first magnetic shielding component 10, and the first magnetic shielding component 10 and the second magnetic shielding component 20 have a first gap 101; the third magnetic shielding component 30 is disposed on the side of the first magnetic shielding component 10 away from the second magnetic shielding component 20, and the first magnetic shielding component 10 and the third magnetic shielding component 30 have a second gap 102. The first magnetic shielding component 10, the second magnetic shielding component 20, and the third magnetic shielding component 30 form a receiving groove 103.

[0047] Optionally, the second magnetic shielding component 20, the first magnetic shielding component 10, and the third magnetic shielding component 30 are arranged at intervals in sequence.

[0048] Optionally, the number of the first magnetic shielding components 10 can be one or more. When the number of the first magnetic shielding components 10 is multiple, the multiple first magnetic shielding components 10 can be stacked or spaced apart in sequence along a direction perpendicular to the arrangement direction of the second magnetic shielding component 20, the first magnetic shielding component 10 and the third magnetic shielding component 30 (i.e., the thickness direction of the magnetic shielding assembly 100).

[0049] Optionally, the number of the second magnetic shielding element 20 can be one or more. When the number of the second magnetic shielding element 20 is multiple, the multiple second magnetic shielding elements 20 can be stacked or spaced apart sequentially along the direction of the arrangement of the second magnetic shielding element 20, the first magnetic shielding element 10 and the third magnetic shielding element 30.

[0050] Optionally, the number of the third magnetic shielding element 30 can be one or more. When the number of the third magnetic shielding element 30 is multiple, the multiple third magnetic shielding elements 30 can be stacked or spaced apart sequentially along the direction of the arrangement of the second magnetic shielding element 20, the first magnetic shielding element 10 and the third magnetic shielding element 30.

[0051] The magnetic shielding component 100 of this application embodiment can be applied to wireless charging devices (e.g., wireless charging pads) and electronic devices. The wireless charging device includes a transmitting wireless charging module and a magnet (hereinafter referred to as the transmitting magnet); the transmitting wireless charging module includes a transmitting coil and a transmitting magnetic core. The electronic device includes a receiving wireless charging module and a magnet (hereinafter referred to as the receiving magnet); the receiving wireless charging module includes a receiving coil and a receiving magnetic core (which can be a nanocrystal).

[0052] Optionally, the electronic device may be, but is not limited to, a mobile phone, tablet computer, smartwatch, smartwatch, laptop computer, smart bracelet, e-reader, game console, or other electronic device that can be wirelessly charged.

[0053] Understandably, the second magnetic shielding member 20 and the third magnetic shielding member 30 protrude towards the same side relative to the first magnetic shielding member 10, thereby forming a receiving groove 103 composed of the first magnetic shielding member 10, the second magnetic shielding member 20, and the third magnetic shielding member 30. In other words, the first magnetic shielding member 10, the second magnetic shielding member 20, and the third magnetic shielding member 30 form a U-shaped structure. Understandably, the cross-section of the magnetic shielding assembly 100 along the arrangement direction parallel to the second magnetic shielding member 20, the first magnetic shielding member 10, and the third magnetic shielding member 30 is a U-shaped structure.

[0054] It should be noted that the receiving groove 103 is used to accommodate a magnet (such as a permanent magnet) and to shield the magnet from magnetic interference. When the magnet is placed in the receiving groove 103, both the second magnetic shielding member 20 and the third magnetic shielding member 30 protrude from the magnet.

[0055] Understandably, the magnetic shielding assembly 100 is a split structure, consisting of a first magnetic shielding component 10, a second magnetic shielding component 20, and a third magnetic shielding component 30, which are independent of each other.

[0056] The magnetic shielding assembly 100 of this application embodiment includes a first magnetic shielding member 10, a second magnetic shielding member 20, and a third magnetic shielding member 30 arranged sequentially at intervals. The first magnetic shielding member 10, the second magnetic shielding member 20, and the third magnetic shielding member 30 form a receiving groove 103, which is used to receive a magnet. When the magnetic shielding assembly 100 of this application embodiment is applied to a wireless charging device to receive the transmitting magnet of the wireless charging device, it can better prevent the overflow of magnetic field lines generated by the transmitting magnet, and prevent the magnetic field lines generated by the transmitting magnet from entering the transmitting magnetic core of the wireless charging device and the receiving magnetic core of the electronic device. This can reduce the bias magnetic field generated in the transmitting and receiving magnetic cores, improve the anti-saturation characteristics of the transmitting and receiving magnetic cores, enhance the inductance and coupling effect of the transmitting and receiving magnetic cores, and thus improve the charging efficiency of the wireless charging device. Similarly, when the magnetic isolation component 100 of this application embodiment is applied to an electronic device to house the receiving magnet of the electronic device, it can better prevent the overflow of magnetic field lines generated by the receiving magnet, and prevent the magnetic field lines generated by the receiving magnet from entering the transmitting magnetic core of the wireless charging device and the receiving magnetic core of the electronic device. This can reduce the bias magnetic field generated in the transmitting magnetic core and the receiving magnetic core, improve the anti-saturation characteristics of the transmitting magnetic core and the receiving magnetic core, enhance the inductance and coupling effect of the transmitting magnetic core and the receiving magnetic core, and thus improve the efficiency of wireless charging. Furthermore, the first magnetic shielding component 10 and the second magnetic shielding component 20 have a first gap 101, and the first magnetic shielding component 10 and the third magnetic shielding component 30 have a second gap 102. Compared with the scheme in which the first magnetic shielding component 10, the second magnetic shielding component 20 and the third magnetic shielding component 30 abut against each other or are connected to each other in sequence, the magnetic shielding component 100 of this application has a better magnetic shielding effect. When used to accommodate a magnet, it can better prevent the overflow of magnetic lines of force generated by the magnet in the accommodating slot, better reduce the bias magnetic field generated in the transmitting end magnetic core and the receiving end magnetic core, better improve the anti-saturation characteristics of the transmitting end magnetic core and the receiving end magnetic core, better improve the inductance and coupling effect of the transmitting end magnetic core and the receiving end magnetic core, and thus better improve the efficiency of wireless charging.

[0057] Please see again Figure 4 In some embodiments, the width s1 of the first gap 101 is in the range of 20μm≤s1≤400μm.

[0058] Understandably, the distance between the first magnetic shielding element 10 and the second magnetic shielding element 20 ranges from 50 μm to 300 μm.

[0059] Specifically, the width s1 of the first gap 101 can be, but is not limited to, 20μm, 30μm, 40μm, 50μm, 60μm, 80μm, 100μm, 120μm, 140μm, 160μm, 180μm, 200μm, 220μm, 240μm, 260μm, 280μm, 300μm, 320μm, 340μm, 360μm, 380μm, 400μm, etc.

[0060] In this embodiment, if the width s1 of the first gap 101 is too small, the magnetic shielding effect of the magnetic shielding component 100 is reduced, which is detrimental to improving the efficiency of wireless charging when applied to wireless charging devices or electronic devices. Similarly, if the width s1 of the first gap 101 is too large, the magnetic shielding effect of the magnetic shielding component 100 will also be reduced, which is also detrimental to improving the efficiency of wireless charging when applied to wireless charging devices or electronic devices. When the width s1 of the first gap 101 is in the range of 20μm≤s1≤400μm, the magnetic shielding component 100 can have a better magnetic shielding effect. When applied to wireless charging devices or electronic devices, it can better isolate the magnetic lines of force generated by the magnet, thereby making it less likely to generate a bias magnetic field on the transmitting magnetic core of the wireless charging device or the receiving magnetic core of the electronic device, which can better improve the charging efficiency of wireless charging.

[0061] Furthermore, the width s1 of the first gap 101 is in the range of 50μm≤s1≤300μm. This allows the magnetic shielding component 100 to have better magnetic shielding effect. When applied to wireless charging devices or electronic devices, it can better isolate the magnetic lines of force generated by the magnet, thereby making it less likely to generate a bias magnetic field on the transmitting magnetic core of the wireless charging device or the receiving magnetic core of the electronic device, and thus better improving the charging efficiency of wireless charging.

[0062] In some embodiments, the width s2 of the second gap 102 is in the range of 20μm≤s2≤400μm.

[0063] It should be noted that the first gap 101 and the second gap 102 may be equal or unequal. In the schematic drawings and specific embodiments of this application, the example of the first gap 101 and the second gap 102 being equal is used for illustration and should not be construed as a limitation on the magnetic shielding component 100 of this application.

[0064] Understandably, the distance between the first magnetic shielding element 10 and the third magnetic shielding element 30 ranges from 50 μm to 300 μm.

[0065] Specifically, the width s2 of the second gap 102 can be, but is not limited to, 20μm, 30μm, 40μm, 50μm, 60μm, 80μm, 100μm, 120μm, 140μm, 160μm, 180μm, 200μm, 220μm, 240μm, 260μm, 280μm, 300μm, 320μm, 340μm, 360μm, 380μm, 400μm, etc.

[0066] In this embodiment, if the width s2 of the second gap 102 is too small, the magnetic shielding effect of the magnetic shielding component 100 is reduced, which is detrimental to improving the efficiency of wireless charging when applied to wireless charging devices or electronic devices. Similarly, if the width s2 of the second gap 102 is too large, the magnetic shielding effect of the magnetic shielding component 100 will also be reduced, which is also detrimental to improving the efficiency of wireless charging when applied to wireless charging devices or electronic devices. When the width s2 of the second gap 102 is in the range of 20μm≤s2≤400μm, the magnetic shielding component 100 can have a better magnetic shielding effect. When applied to wireless charging devices or electronic devices, it can better isolate the magnetic lines of force generated by the magnet, thereby making it less likely to generate a bias magnetic field on the transmitting magnetic core of the wireless charging device or the receiving magnetic core of the electronic device, which can better improve the charging efficiency of wireless charging.

[0067] Furthermore, the width s2 of the second gap 102 is in the range of 50μm≤s2≤300μm. This allows the magnetic shielding component 100 to have better magnetic shielding effect. When applied to wireless charging devices or electronic devices, it can better isolate the magnetic lines of force generated by the magnet, thereby making it less likely to generate a bias magnetic field on the transmitting magnetic core of the wireless charging device or the receiving magnetic core of the electronic device, and thus better improving the charging efficiency of wireless charging.

[0068] Please see Figure 5 and Figure 6 In some embodiments, along the arrangement direction of the second magnetic shielding member 20, the first magnetic shielding member 10 and the third magnetic shielding member 30, the width w1 of the first magnetic shielding member 10 is in the range of 2mm≤w1≤10mm.

[0069] Specifically, along the arrangement direction of the second magnetic shielding member 20, the first magnetic shielding member 10 and the third magnetic shielding member 30, the width w1 of the first magnetic shielding member 10 can be, but is not limited to, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.

[0070] In this embodiment, if the width w1 of the first magnetic shielding component 10 is too small, the size of the magnet that can be embedded in the magnetic shielding component 100 will be too small, the area of ​​the magnetic pole will be too small, reducing the magnetic attraction of the magnet. In addition, it will increase the processing difficulty of the magnet. If the width w1 of the first magnetic shielding component 10 is too large, the size of the magnetic shielding component 100 will be too large, making it difficult to be compatible with the size of electronic devices.

[0071] In some embodiments, along the thickness direction of the magnetic shielding assembly 100, the height h1 of the first magnetic shielding member 10 is in the range of 0.05mm≤h1≤2.5mm, wherein the thickness direction of the magnetic shielding assembly 100 intersects with the arrangement direction of the second magnetic shielding member 20, the first magnetic shielding member 10 and the third magnetic shielding member 30.

[0072] In one specific embodiment, the second magnetic shielding element 20, the first magnetic shielding element 10, and the third magnetic shielding element 30 are arranged along the radial direction of the magnetic shielding assembly 100, and the thickness direction of the magnetic shielding assembly 100 is perpendicular to the arrangement direction of the second magnetic shielding element 20, the first magnetic shielding element 10, and the third magnetic shielding element 30.

[0073] It should be noted that when the magnetic shielding component 100 is applied to a wireless charging device or electronic device, the thickness direction of the magnetic shielding component 100 is parallel to the thickness direction of the wireless charging device or electronic device.

[0074] Specifically, along the thickness direction of the magnetic shielding assembly 100, the height h1 of the first magnetic shielding member 10 ranges from 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.5mm, etc.

[0075] In this embodiment, if the height h1 of the first magnetic shielding member 10 is too small along the thickness direction of the magnetic shielding component 100, the magnetic induction intensity (also known as magnetic flux density, or simply magnetic flux density) of the first magnetic shielding member 10 is prone to saturation, reducing the magnetic shielding effect of the first magnetic shielding member 10. If the height h1 of the first magnetic shielding member 10 is too large along the thickness direction of the magnetic shielding component 100, the overall thickness of the magnetic shielding component 100 will be too thick. When applied to wireless charging devices or electronic devices, this will increase the thickness of the wireless charging devices or electronic devices, which is not conducive to the thinning and miniaturization of wireless charging devices or electronic devices.

[0076] In some embodiments, along the arrangement direction of the second magnetic shielding member 20, the first magnetic shielding member 10 and the third magnetic shielding member 30, the width w2 of the second magnetic shielding member 20 is in the range of 0.1mm≤w2≤5mm.

[0077] Optionally, the second magnetic shielding element 20, the first magnetic shielding element 10 and the third magnetic shielding element 30 are arranged along the radial direction of the magnetic shielding assembly 100, and the width w2 of the second magnetic shielding element 20 along the radial direction of the magnetic shielding assembly 100 is in the range of 0.1mm≤w2≤5mm.

[0078] Specifically, the width w2 of the second magnetic shielding member 20 can be, but is not limited to, 0.1mm, 0.3mm, 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5mm, etc.

[0079] In this embodiment, if the width w2 of the second magnetic shielding component 20 is too small, the magnetic induction intensity (also known as magnetic flux density, or simply magnetic flux density) of the second magnetic shielding component 20 is prone to saturation, which reduces the magnetic shielding effect of the second magnetic shielding component 20. In addition, it increases the processing difficulty of the second magnetic shielding component 20. If the width w2 of the second magnetic shielding component 20 is too large, the overall size of the magnetic shielding component 100 will be too large (i.e., the outer diameter will be too large), making it difficult to be compatible with the size of related wireless charging devices or electronic devices.

[0080] In some embodiments, along the thickness direction of the magnetic shielding assembly 100, the height h2 of the second magnetic shielding member 20 is in the range of 0.2mm≤h2≤5mm, wherein the thickness direction of the magnetic shielding assembly 100 intersects with the arrangement direction of the second magnetic shielding member 20, the first magnetic shielding member 10 and the third magnetic shielding member 30.

[0081] Optionally, along the thickness direction of the magnetic shielding assembly 100, the height h2 of the second magnetic shielding member 20 is greater than the height h1 of the first magnetic shielding member 10, i.e., h2 > h1.

[0082] Specifically, along the thickness direction of the magnetic shielding assembly 100, the height h2 of the second magnetic shielding member 20 can be, but is not limited to, 0.2mm, 0.3mm, 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5mm, etc.

[0083] In this embodiment, if the height h2 of the second magnetic shielding member 20 is too small along the thickness direction of the magnetic shielding component 100, then when the magnetic shielding component 100 is used to house a magnet, the second magnetic shielding member 20 cannot cover the upper surface of the magnet, thus reducing the magnetic shielding effect of the second magnetic shielding member 20 on the magnet; if the height h2 of the second magnetic shielding member 20 is too large along the thickness direction of the magnetic shielding component 100, the overall thickness of the magnetic shielding component 100 is too thick, which increases the thickness of the wireless charging device or electronic device when applied to it, which is not conducive to the thinning and miniaturization of the wireless charging device or electronic device.

[0084] In some embodiments, along the arrangement direction of the second magnetic shielding member 20, the first magnetic shielding member 10 and the third magnetic shielding member 30, the width w3 of the third magnetic shielding member 30 is in the range of 0.1mm≤w3≤5mm.

[0085] Optionally, the second magnetic shielding element 20, the first magnetic shielding element 10 and the third magnetic shielding element 30 are arranged along the radial direction of the magnetic shielding assembly 100, and the width w3 of the third magnetic shielding element 30 along the radial direction of the magnetic shielding assembly 100 is in the range of 0.1mm≤w3≤5mm.

[0086] Specifically, the width w3 of the third magnetic shielding element 30 can be, but is not limited to, 0.1mm, 0.3mm, 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5mm, etc.

[0087] In this embodiment, if the width w3 of the third magnetic shielding component 30 is too small, the magnetic induction intensity (also known as magnetic flux density, or simply magnetic flux density) of the third magnetic shielding component 30 is prone to saturation, which reduces the magnetic shielding effect of the third magnetic shielding component 30. In addition, it increases the processing difficulty of the third magnetic shielding component 30. If the width w3 of the third magnetic shielding component 30 is too large, the overall size of the magnetic shielding component 100 will be too large (i.e., the outer diameter will be too large), making it difficult to be compatible with the size of related wireless charging devices or electronic devices.

[0088] In some embodiments, along the thickness direction of the magnetic shielding assembly 100, the height h3 of the third magnetic shielding member 30 is in the range of 0.2mm≤h3≤5mm, wherein the thickness direction of the magnetic shielding assembly 100 intersects with the arrangement direction of the second magnetic shielding member 20, the first magnetic shielding member 10 and the third magnetic shielding member 30.

[0089] Optionally, along the thickness direction of the magnetic shielding assembly 100, the height h3 of the third magnetic shielding member 30 is greater than the height h1 of the first magnetic shielding member 10, i.e., h3 > h1.

[0090] Specifically, along the thickness direction of the magnetic shielding assembly 100, the height h3 of the third magnetic shielding member 30 can be, but is not limited to, 0.2mm, 0.3mm, 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5mm, etc.

[0091] In this embodiment, if the height h3 of the third magnetic shielding member 30 is too small along the thickness direction of the magnetic shielding component 100, then when the magnetic shielding component 100 is used to house a magnet, the third magnetic shielding member 30 cannot cover the upper surface of the magnet, thus reducing the magnetic shielding effect of the third magnetic shielding member 30 on the magnet; if the height h3 of the third magnetic shielding member 30 is too large along the thickness direction of the magnetic shielding component 100, the overall thickness of the magnetic shielding component 100 is too thick, which increases the thickness of the wireless charging device or electronic device when applied to it, which is not conducive to the thinning and miniaturization of the wireless charging device or electronic device.

[0092] Please see again Figures 1 to 3 In some embodiments, the first magnetic shielding member 10, the second magnetic shielding member 20, and the third magnetic shielding member 30 are all annular structures. The first magnetic shielding member 10 is arranged around the outer periphery of the second magnetic shielding member 20, and the third magnetic shielding member 30 is arranged around the outer periphery of the first magnetic shielding member 10. The magnetic shielding assembly 100 has a notch 104 that respectively disconnects the second magnetic shielding member 20, the first magnetic shielding member 10, and the third magnetic shielding member 30.

[0093] Understandably, the second magnetic shielding element 20, the first magnetic shielding element 10, and the third magnetic shielding element 30 are arranged sequentially from the inside to the outside along the radial direction of the magnetic shielding assembly 100.

[0094] Optionally, the ring structure can be, but is not limited to, at least one of a circular ring, an elliptical ring, a quasi-circular ring, a quasi-elliptical ring, a rectangular ring, and a quasi-rectangular ring.

[0095] Understandably, in this embodiment, the receiving groove 103 is an annular groove.

[0096] Optionally, the first magnetic shielding component 10 has a first sub-notch 11, the second magnetic shielding component 20 has a second sub-notch 21, and the third magnetic shielding component 30 has a third sub-notch 31. The first sub-notch 11, the second sub-notch 21, and the third sub-notch 31 constitute the notch 104. It can be understood that the second sub-notch 21, the first sub-notch 11, and the third sub-notch 31 are correspondingly arranged and sequentially connected.

[0097] In this embodiment, the first magnetic shielding component 10, the second magnetic shielding component 20, and the third magnetic shielding component 30 are disconnected by the notch 104 to avoid the formation of large eddy currents on the first magnetic shielding component 10, the second magnetic shielding component 20, and the third magnetic shielding component 30, which would increase the loss of the magnetic shielding component 100 and reduce the efficiency of wireless charging when the magnetic shielding component 100 is used in a wireless charging device or electronic device.

[0098] Please see Figure 3 In some embodiments, the width w of the notch 104 along the circumferential direction of the magnetic shielding assembly 100 ranges from 0.1 mm ≤ w ≤ 50 mm.

[0099] Understandably, the width w of the notch 104 in the radial direction perpendicular to the magnetic shielding assembly 100 ranges from 0.1 mm ≤ w ≤ 50 mm.

[0100] It should be noted that the width of the notch 104 along the circumference of the magnetic shielding assembly 100 can be uniform or equal. For example, when the first magnetic shielding element 10, the second magnetic shielding element 20, and the third magnetic shielding element 30 are all rectangular rings, the width of the notch 104 can be equal. As another example, when the first magnetic shielding element 10, the second magnetic shielding element 20, and the third magnetic shielding element 30 are all circular rings, the width of the notch 104 can be unequal. The width of the notch 104 gradually increases along the direction from the second magnetic shielding element 20 to the third magnetic shielding element 30, that is, it gradually increases from the inside to the outside along the radial direction of the magnetic shielding assembly 100.

[0101] Specifically, along the circumferential direction of the magnetic shielding component 100, the width w of the notch 104 can be, but is not limited to, 0.1mm, 0.5mm, 1mm, 3mm, 5mm, 8mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, etc.

[0102] In this embodiment, if the width w of the notch 104 is too small, it will increase the processing difficulty of the first magnetic shielding component 10, the second magnetic shielding component 20, and the third magnetic shielding component 30; if the width w of the notch 104 is too large, too much structure will be removed from the first magnetic shielding component 10, the second magnetic shielding component 20, and the third magnetic shielding component 30, and the size of the magnet that can be embedded in the receiving groove 103 of the magnetic shielding component 100 will be smaller, reducing the magnetic attraction of the magnet. When applied to wireless charging devices or electronic devices, this is not conducive to the alignment of the wireless charging device and the electronic device.

[0103] In some embodiments, the first magnetic shielding component 10, the second magnetic shielding component 20 and the third magnetic shielding component 30 are all annular structures, and the inner diameter Ri of the second magnetic shielding component 20 is in the range of 15mm≤Ri≤30mm.

[0104] Understandably, the inner diameter of the magnetic shielding assembly 100 ranges from 15 mm to 30 mm.

[0105] Understandably, in this embodiment, the receiving groove 103 is an annular receiving groove 103.

[0106] Specifically, the inner diameter Ri of the second magnetic shielding component 20 can be, but is not limited to, 15mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, etc.

[0107] In this embodiment, if the inner diameter Ri of the second magnetic shielding component 20 is too small, the magnetic shielding component 100 will compress the size of the transmitting magnetic core (transmitting ferrite) of the wireless charging device when applied to the wireless charging device, increasing the magnetic circuit reluctance of the transmitting magnetic core, reducing the inductance of the transmitting magnetic core, and reducing the charging efficiency of the wireless charging. If the inner diameter Ri of the second magnetic shielding component 20 is too large, the overall outer diameter of the magnetic shielding component 100 will be too large, making it difficult to be compatible with the size of the relevant wireless charging device or electronic device.

[0108] Optionally, the first magnetic shielding element 10 may be, but is not limited to, an iron-based alloy.

[0109] Optionally, the second magnetic shielding element 20 may be, but is not limited to, an iron-based alloy.

[0110] Optionally, the third magnetic shielding element 30 may be, but is not limited to, an iron-based alloy.

[0111] Optionally, the iron-based alloy may include, but is not limited to, at least one of FeSi alloy, FeSiAl alloy, FeCo alloy, FeNi alloy, FeNiMo alloy, and 400 series ferritic stainless steel.

[0112] Optionally, the material of the first magnetic shielding component 10 includes at least one selected from FeSi alloy, FeSiAl alloy, FeCo alloy, FeNi alloy, FeNiMo alloy, and 400 series ferritic stainless steel. The first magnetic shielding component 10 made of these materials has a better magnetic shielding effect. When applied to wireless charging devices or electronic devices, it provides better magnetic shielding for magnets, thereby improving the efficiency of wireless charging.

[0113] Optionally, the material of the second magnetic shielding component 20 includes at least one selected from FeSi alloy, FeSiAl alloy, FeCo alloy, FeNi alloy, FeNiMo alloy, and 400 series ferritic stainless steel. The second magnetic shielding component 20 made of these materials has a better magnetic shielding effect. When applied to wireless charging devices or electronic devices, it provides better magnetic shielding for magnets, thereby improving the efficiency of wireless charging.

[0114] Optionally, the material of the third magnetic shielding component 30 includes at least one selected from FeSi alloy, FeSiAl alloy, FeCo alloy, FeNi alloy, FeNiMo alloy, and 400 series ferritic stainless steel. The third magnetic shielding component 30 made from these materials has better magnetic shielding performance. When applied to wireless charging devices or electronic devices, it provides better magnetic shielding for magnets, thereby improving the efficiency of wireless charging.

[0115] Optionally, the materials of the first magnetic shielding component 10, the second magnetic shielding component 20, and the third magnetic shielding component 30 may be the same or different.

[0116] Please see Figure 7 and Figure 8 This application embodiment also provides a magnetic attraction component 200, which includes the magnetic isolation component 100 and the magnet 210 described in this application embodiment. The magnet 210 is disposed in the receiving groove 103 of the magnetic isolation component 100.

[0117] Optionally, the magnet 210 may be, but is not limited to, a permanent magnet.

[0118] Optionally, the permanent magnet can be, but is not limited to, a magnet.

[0119] The magnetic shielding component 100 of this application embodiment can be applied to wireless charging devices or electronic devices with wireless charging function.

[0120] Optionally, the magnet 210 can be an integral structure or a split structure.

[0121] Please see Figure 9 Optionally, the magnet 210 includes a plurality of sub-magnet assemblies 211, which are spaced apart along the extending direction of the receiving groove 103. Understandably, the plurality of sub-magnet assemblies 211 are supported on the first magnetic shielding member 10, and are spaced apart around the outer periphery of the second magnetic shielding member 20.

[0122] Optionally, each sub-magnet assembly 211 includes two sub-magnets 2111 arranged in the radial direction of the magnetic isolation assembly 100, with the two magnets 210 abutting each other.

[0123] The magnetic attraction component 200 of this application embodiment includes a magnetic isolation component 100 and a magnet 210, wherein the magnet 210 is disposed within the receiving groove 103 of the magnetic isolation component 100. The magnetic isolation component 100 includes a first magnetic isolation element 10, a second magnetic isolation element 20, and a third magnetic isolation element 30 arranged sequentially at intervals. The magnetic isolation component 100 can prevent the magnetic field lines generated by the magnet 210 from overflowing. When the magnetic attraction component 200 is applied to a wireless charging device or an electronic device, it can prevent the magnetic field lines generated by the magnet 210 from entering the transmitting magnetic core of the wireless charging device and the receiving magnetic core of the electronic device, thereby reducing the bias magnetic field generated in the transmitting and receiving magnetic cores, improving the anti-saturation characteristics of the transmitting and receiving magnetic cores, enhancing the inductance and coupling effect of the transmitting and receiving magnetic cores, and thus improving the charging efficiency of the wireless charging device.

[0124] Please see Figures 10 to 12In some embodiments, along the arrangement direction of the second magnetic shielding member 20, the first magnetic shielding member 10 and the third magnetic shielding member 30, the width w1 of the first magnetic shielding member 10 is greater than the width w4 of the magnet 210.

[0125] In this embodiment, the width w1 of the first magnetic shielding component 10 is greater than the width w4 of the magnet 210. This not only facilitates the installation of the magnet 210 but also better blocks the magnetic lines of force of the magnet 210, providing better magnetic shielding. When the magnetic attraction assembly 200 is applied to wireless charging devices or electronic devices, it better reduces the bias magnetic field generated by the magnet 210 in the transmitting and receiving magnetic cores, improves the anti-saturation characteristics of the transmitting and receiving magnetic cores, enhances the inductance and coupling effect of the transmitting and receiving magnetic cores, and thus improves the charging efficiency of the wireless charging device.

[0126] Optionally, the number of magnets 210 can be one or more. When the number of magnets 210 is multiple, the multiple magnets 210 are arranged at intervals along the extending direction of the receiving groove 103.

[0127] Optionally, along the arrangement direction of the second magnetic shielding member 20, the first magnetic shielding member 10 and the third magnetic shielding member 30, the difference w1-w4 between the width w1 of the first magnetic shielding member 10 and the width w4 of the magnet 210 is in the range of 0.1mm≤w1-w4≤2mm.

[0128] Specifically, the difference between the width w1 of the first magnetic shielding component 10 and the width w4 of the magnet 210 can be, but is not limited to, 0.1mm, 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, etc.

[0129] In this embodiment, the difference w1-w4 between the width w1 of the first magnetic shielding component 10 and the width w4 of the magnet 210 is too small, reducing the magnetic shielding effect of the first magnetic shielding component 10 on the magnet 210; if the difference w1-w4 between the width w1 of the first magnetic shielding component 10 and the width w4 of the magnet 210 is too large, the size of the magnet 210 will be too small, reducing the magnetic attraction force of the magnet 210. When applied to wireless charging devices or electronic devices, this is not conducive to the alignment of the wireless charging device and the electronic device.

[0130] In some embodiments, the surface of the first magnetic shielding member 10 facing away from the receiving groove 103 is flush with one end of the second magnetic shielding member 20 and one end of the third magnetic shielding member 30. Along the thickness direction of the magnetic shielding assembly 100, the height of the first magnetic shielding member 10 is h1, the height of the second magnetic shielding member 20 is h2, the height of the third magnetic shielding member 30 is h3, and the height of the magnet 210 is h4. Then the magnetic attraction assembly 200 satisfies: h2≥h1+h4, h3≥h1+h4.

[0131] In this embodiment, h2≥h1+h4 and h3≥h1+h4, which better blocks the magnetic field lines of magnet 210, providing a better magnetic shielding effect. This allows the magnetic attraction component 200, when applied to wireless charging devices or electronic devices, to better reduce the bias magnetic field generated by magnet 210 within the transmitting and receiving magnetic cores, improve the anti-saturation characteristics of the transmitting and receiving magnetic cores, enhance the inductance and coupling effect of the transmitting and receiving magnetic cores, and ultimately improve the charging efficiency of the wireless charging device.

[0132] Optionally, 0.1mm ≤ h2 - (h1 + h4) ≤ 1mm. Specifically, h2 - (h1 + h4) can be, but is not limited to, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, etc. If h2 - (h1 + h4) is too small, the magnetic shielding effect of the second magnetic shielding component 20 on the magnet 210 is reduced. When applied to wireless charging devices or electronic devices, the bias magnetic field generated by the magnetic lines of force generated by the magnet 210 on the transmitting and receiving magnetic cores is still relatively large, which is not conducive to improving the charging efficiency of wireless charging. If h2 - (h1 + h4) is too large, the overall thickness of the magnetic attraction component 200 is too thick. When applied to wireless charging devices or electronic devices, it increases the thickness of the wireless charging devices or electronic devices, which is not conducive to the thinning and miniaturization of wireless charging devices or electronic devices.

[0133] Optionally, 0.1mm ≤ h3 - (h1 + h4) ≤ 1mm. Specifically, h3 - (h1 + h4) can be, but is not limited to, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, etc. If h3 - (h1 + h4) is too small, the magnetic shielding effect of the third magnetic shielding component 30 on the magnet 210 is reduced. When applied to wireless charging devices or electronic devices, the bias magnetic field generated by the magnetic lines of force generated by the magnet 210 on the transmitting and receiving magnetic cores is still relatively large, which is not conducive to improving the charging efficiency of wireless charging. If h3 - (h1 + h4) is too large, the overall thickness of the magnetic attraction component 200 is too thick. When applied to wireless charging devices or electronic devices, it increases the thickness of the wireless charging devices or electronic devices, which is not conducive to the thinning and miniaturization of wireless charging devices or electronic devices.

[0134] Please see Figure 13 and Figure 14 This application also provides a wireless charging device 300, which includes a transmitter wireless charging module 310 and a magnetic component 200 as described in this application embodiment. The magnetic component 200 is arranged around the outer periphery of the transmitter wireless charging module 310.

[0135] Optionally, the transmitter wireless charging module 310 includes a transmitter coil 311 and a transmitter magnetic core 312, wherein the transmitter coil 311 is sleeved on a portion of the outer periphery of the transmitter magnetic core 312.

[0136] The wireless charging device 300 of this application embodiment can be used to wirelessly charge portable electronic devices such as mobile phones, tablets, smartwatches, laptops, smart bracelets, e-readers, and game consoles. When the wireless charging device 300 is used to charge an electronic device, the electronic device is placed on the surface of the wireless charging device 300 (i.e., the electronic device is attached to the wireless charging device 300), and the magnetic attraction component 200 is used to attract the electronic device onto the wireless charging device 300, so that the transmitting coil 311 is correspondingly arranged with the receiving coil of the electronic device. It should be noted that when the wireless charging device 300 charges the electronic device, the opening of the receiving groove 103 of the magnetic attraction component 200 faces the electronic device; in other words, the magnet 210 is located between the first magnetic shielding member 10 and the electronic device.

[0137] Optionally, the wireless charging device 300 may be, but is not limited to, a sheet-like structure. Optionally, the sheet-like structure may be, but is not limited to, circular, elliptical, rectangular, or rectangular shapes. Optionally, the extending plane of the wireless charging device 300 is perpendicular to the thickness direction of the wireless charging device 300.

[0138] It should be noted that during charging, the wireless charging device 300 is used to electrically connect to an external power source to load electrical signals and transmit energy, thereby charging the electronic device.

[0139] Optionally, the wireless charging device 300 further includes a housing 340 and a cover plate 350, the housing 340 and the cover plate 350 forming an installation space 341, the installation space 341 being used to accommodate the magnetic attraction component 200 and the transmitting wireless charging module 310.

[0140] Please see Figure 15 Optionally, the wireless charging device 300 further includes a first processor 320 and a first memory 330, wherein the first processor 320 is electrically connected to both the first memory 330 and the transmitting coil 311. The first processor 320 is used to control the receiving wireless charging module to perform charging. The first memory 330 is used to store program code and other information required for the first processor 320 to run.

[0141] Optionally, the first processor 320 includes one or more general-purpose processors, wherein the general-purpose processor can be any type of device capable of processing electronic instructions, including a central processing unit (CPU), microprocessor, microcontroller, main processor, controller, and ASIC, etc. The first processor 320 is used to execute various types of digital storage instructions, such as software or firmware programs stored in the first memory 330, which enables the computing device to provide a wide range of services.

[0142] Optionally, the first memory 330 may include volatile memory, such as random access memory (RAM); the first memory 330 may also include non-volatile memory (NVM), such as read-only memory (ROM), flash memory (FM), hard disk drive (HDD), or solid-state drive (SSD). The first memory 330 may also include combinations of the above types of memory.

[0143] It is understood that the wireless charging device 300 described in this embodiment is merely one form of the wireless charging device 300 used in the magnetic shielding component 100, and should not be construed as a limitation on the wireless charging device 300 provided in this application, nor should it be construed as a limitation on the magnetic shielding component 100 provided in various embodiments of this application.

[0144] Please see Figure 16 and Figure 17 This application also provides an electronic device 400, which includes: a receiving wireless charging module 410 and a magnetic component 200 as described in this application embodiment, wherein the magnetic component 200 is disposed around the outer periphery of the receiving wireless charging module 410.

[0145] Optionally, the receiving wireless charging module 410 includes a receiving coil 411 and a receiving magnetic core 412, which are stacked along the thickness direction of the electronic device 400. The receiving coil 411 is located between the magnetic attraction assembly 200 and the receiving magnetic core 412, and the opening of the receiving slot 103 of the magnetic attraction assembly 200 faces away from the receiving coil 411.

[0146] The electronic device 400 of this application can be, but is not limited to, portable electronic devices 400 such as mobile phones, tablets, smartwatches, smartwatches, laptops, smart bracelets, e-readers, and game consoles.

[0147] Please see Figure 18 Optionally, the electronic device 400 further includes a second processor 420, a second memory 430, a display screen 440, and a power supply module 450. The second processor 420 is electrically connected to the second memory 430, the display screen 440, the power supply module 450, and the receiving wireless charging module 410, respectively. The power supply module 450 is also electrically connected to the receiving wireless charging module 410. The second processor 420 is used to control the display screen 440 to display information and to control the receiving wireless charging module 410 to receive energy emitted by the transmitting wireless charging module 310 of the wireless charging device 300 to charge the power supply module 450.

[0148] Optionally, the second processor 420 includes one or more general-purpose processors, wherein the general-purpose processor can be any type of device capable of processing electronic instructions, including a central processing unit (CPU), microprocessor, microcontroller, main processor, controller, and ASIC, etc. The second processor 420 is used to execute various types of digital storage instructions, such as software or firmware programs stored in the second memory 430, which enables the computing device to provide a wide range of services.

[0149] Optionally, the second memory 430 may include volatile memory, such as random access memory (RAM); the second memory 430 may also include non-volatile memory (NVM), such as read-only memory (ROM), flash memory (FM), hard disk drive (HDD), or solid-state drive (SSD). The second memory 430 may also include combinations of the above types of memory.

[0150] Optionally, the display screen 440 may be, but is not limited to, one or more of the following: liquid crystal display screen, light-emitting diode display screen (LED display screen), micro light-emitting diode display screen (Micro LED display screen), mini light-emitting diode display screen (Mini LED display screen), organic light-emitting diode display screen (OLED display screen).

[0151] Optionally, the power supply module 450 may be, but is not limited to, a power supply battery, a battery module, etc.

[0152] It is understood that the electronic device 400 described in this embodiment is merely one form of the electronic device 400 used in the magnetic shielding component 100, and should not be construed as a limitation on the electronic device 400 provided in this application, nor should it be construed as a limitation on the magnetic shielding component 100 provided in various embodiments of this application.

[0153] The magnetic shielding component 100 of this application will be further described below through specific embodiments.

[0154] Examples 1 to 7

[0155] The wireless charging device 300 in each embodiment includes a transmitting wireless charging module 310 and a magnetic component 200. The transmitting wireless charging module 310 includes a transmitting coil 311 and a transmitting magnetic core 312; the transmitting magnetic core 312 includes a first cylinder and a second cylinder connected together, forming a T-shaped structure; the first cylinder has a diameter of 45mm and a height of 1.2mm; the second cylinder has a diameter of 22mm and a height of 1.0mm; the transmitting magnetic core 312 is made of ferrite; the transmitting coil 311 is sleeved on the outer periphery of the second cylinder, with an inner diameter of 24mm, an outer diameter of 45mm, and 10 turns; the magnetic component 200 of the wireless charging device 300 includes a magnetic shielding component 100 and a magnet 210. The magnetic shielding component 100 has a circular structure and includes a first magnetic shielding element 10, a second magnetic shielding element 20, and a third magnetic shielding element 30. The width w1 of the first magnetic shielding element 10 is 4 mm, and the height h1 is 2 mm. The inner diameter Ri of the second magnetic shielding element 20 is 45 mm, the width w2 of the second magnetic shielding element 20 is 1 mm, and the height h2 of the second magnetic shielding element 20 is 2.2 mm. The width w3 of the third magnetic shielding element 30 is 1 mm, and the height h3 is 2.2 mm. The width s1 of the first gap 101 and the width s2 of the second gap 102 of the magnetic shielding component 100 in the wireless charging device 300 of each embodiment are equal. The maximum size of the notch 104 in the magnetic shielding component 100 is 10mm. The magnet 210 includes 16 sub-magnet components 211. The 16 sub-magnet components 211 are evenly arranged along the extension direction of the receiving groove 103. Each sub-magnet component 211 includes two sub-magnets 2111 arranged radially. The sub-magnets 2111 have a cuboid structure with a length of 7.5mm, a width of 1.8mm, and a thickness of 1.5mm.

[0156] The electronic device 400 in each embodiment includes a wireless charging module 410 and a magnetic component 200; the wireless charging module 410 includes a receiver coil 411 and a receiver magnetic core 412 stacked together; the receiver magnetic core 412 has a 60mm×60mm square structure, a core thickness of 50μm, and is made of nanocrystal material; the receiver coil 411 has an inner diameter of 22mm, an outer diameter of 45mm, and 8 turns; the magnetic component 200 of the electronic device 400 includes a first magnetic shielding element 10 and a magnet 210; the first magnetic shielding element 10... The structure is circular. The width w1 of the first magnetic shielding component 10 is 4mm, the height h1 is 2mm, and the maximum size of the first sub-notch 11 of the first magnetic shielding component 10 is 10mm. The magnet 210 includes 16 sub-magnetic components 211, which are evenly arranged along the extension direction of the receiving groove 103. Each sub-magnetic component 211 includes two sub-magnets 2111 arranged radially. The sub-magnets 2111 have a cuboid structure with a length of 7.5mm, a width of 1.8mm, and a thickness of 1.5mm. The difference between the magnetic component 200 of the electronic device 400 and the magnetic component 200 of the wireless charging device 300 is that the electronic device 400 does not include the second magnetic shielding component 20 and the third magnetic shielding component 30. The widths s1 of the first gap 101 and s2 of the second gap 102 of the magnetic attraction component 200 and the magnetic isolation component 100 of the wireless charging device 300 in each embodiment are shown in Table 1 below.

[0157] Comparative Example 1

[0158] The difference between this comparative example and Example 1 is that the magnetic shielding assembly 100 in this comparative example only includes the first magnetic shielding component 10, and does not include the second magnetic shielding component 20 and the third magnetic shielding component 30.

[0159] Comparative Example 2

[0160] The difference between this comparative example and Example 1 is that the first gap 101 and the second gap 102 of the magnetic shielding component 100 in this comparative example are both 0, and the first magnetic shielding element 10, the second magnetic shielding element 20 and the third magnetic shielding element 30 are an integral structure.

[0161] According to SJ / T 10298-1991, the self-inductance Lp of the transmitting wireless charging module 310, the self-inductance Ls of the receiving wireless charging module 410, the mutual inductance M between the transmitting and receiving wireless charging modules 310 and 410, and the bias magnetic field generated by the receiving magnetic core 412 were measured. The test results of each embodiment and comparative example are shown in Table 1 below.

[0162]

[0163] The magnetic field distribution cloud diagrams of the receiving end magnetic core 412 in Examples 2, 4, 5 and 7 are as follows: Figure 19 As shown. The magnetic field distribution cloud diagrams of the receiving end magnetic core 412 in Comparative Example 1 and Comparative Example 2 are as follows. Figure 20 As shown.

[0164] Table 1 shows the test results of Examples 1 to 7, Comparative Examples 1 and 2. It can be seen that when the magnetic shielding assembly 100 includes only the first magnetic shielding element 10 (Comparative Example 1) or the magnetic shielding assembly 100 is an integral structure (Comparative Example 2), the bias magnetic field within the receiving magnetic core 412 is relatively large. Compared to Comparative Example 2, where the magnetic shielding assembly 100 is an integral structure, when the first magnetic shielding element 10 has gaps with the second magnetic shielding element 20 and the third magnetic shielding element 30 respectively (Examples 1 to 7), the bias magnetic field within the receiving magnetic core 412 decreases. As the first gap 101 and the second gap 102 gradually increase, the bias magnetic field within the receiving magnetic core 412 first gradually decreases, then gradually increases. When both the first gap 101 and the second gap 102 are 100 μm, the bias magnetic field within the receiving magnetic core 412 is the smallest. When the first gap 101 and the second gap 102 are 20μm to 400μm, the magnetic shielding component 100 has a better magnetic shielding effect, which can better reduce the bias magnetic field generated in the receiving end magnetic core 412 and improve the charging efficiency of wireless charging.

[0165] The test results of Examples 1 to 7, Comparative Examples 1 and 2 in Table 1 also show that when the magnetic shielding component 100 only includes the first magnetic shielding element 10 (Comparative Example 1), the self-inductance Lp of the transmitting wireless charging module 310, the self-inductance Ls of the receiving wireless charging module 410, the mutual inductance M between the transmitting wireless charging module 310 and the receiving wireless charging module 410, and M / Lp are all relatively small. When the magnetic shielding component 100 includes a first magnetic shielding element 10, a second magnetic shielding element 20, and a third magnetic shielding element 30, and the first magnetic shielding element 10, the second magnetic shielding element 20, and the third magnetic shielding element 30 are an integral structure (Comparative Example 2), the self-inductance Lp of the transmitting wireless charging module 310, the self-inductance Ls of the receiving wireless charging module 410, the mutual inductance M between the transmitting wireless charging module 310 and the receiving wireless charging module 410, and M / Lp all increase. The increase in M / Lp indicates that the voltage gain of Comparative Example 2 is improved compared to Comparative Example 1, which is beneficial to improving the efficiency of wireless charging.

[0166] When the first magnetic shielding component 10 is spaced apart from the second magnetic shielding component 20 and the third magnetic shielding component 30, as the first gap 101 and the second gap 102 increase, the self-inductance Lp of the transmitting wireless charging module 310, the self-inductance Ls of the receiving wireless charging module 410, and the mutual inductance M between the transmitting wireless charging module 310 and the receiving wireless charging module 410 all gradually increase, and M / Lp first gradually increases and then gradually decreases.

[0167] Magnetic field distribution cloud diagrams of the receiving end magnetic core 412 from Examples 2, 4, 5, 7, Comparative Example 1, and Comparative Example 2. Figure 19 and Figure 20 As can be seen, when only the first magnetic shielding component 10 is set (Comparative Example 1) or the magnetic shielding component 100 is an integral structure (Comparative Example 2), the area of ​​the blue region in the middle of the magnetic field distribution cloud map of the receiving end magnetic core 412 is relatively small. This indicates that the area of ​​small magnetic field in Comparative Example 1 and Comparative Example 2 is small, and the bias magnetic field generated by the receiving end magnetic core 412 is large.

[0168] As the width s1 of the first gap 101 and the width s2 of the second gap 102 increase (as in Embodiments 2, 4, 5, and 7), the bias magnetic field within the distribution ring of the magnet 210 gradually increases, while the bias magnetic field outside the distribution ring of the magnet 210 gradually decreases. This is because the arrangement of the first magnetic shielding element 10, the second magnetic shielding element 20, and the third magnetic shielding element 30 of the magnetic shielding assembly 100 forms a U-shaped structure, which confines the magnetic lines of force of the magnet 210 between the second magnetic shielding element 20 and the third magnetic shielding element 30. Therefore, the larger the first gap 101 and the second gap 102 are, the larger the bias magnetic field confined within the annular region of the magnetic shielding assembly 100; while the smaller the bias magnetic field outside the magnetic shielding assembly 100. Therefore, the magnetic isolation component 100 of this application can make the magnetic flux density in the receiver core 412, which originally had a higher degree of saturation, even higher, but can reduce the bias magnetic field in the effective area inside the receiver core 412, thereby improving the inductance and coupling of the receiver core 412, improving the anti-saturation characteristics of the receiver core 412, and improving the efficiency of wireless charging.

[0169] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form yet another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A magnetic shielding component, characterized in that, include: First magnetic shielding component; The second magnetic shielding component is disposed on one side of the first magnetic shielding component, and the first magnetic shielding component and the second magnetic shielding component have a first gap; as well as The third magnetic shielding component is disposed on the side of the first magnetic shielding component away from the second magnetic shielding component. The first magnetic shielding component and the third magnetic shielding component have a second gap. The first magnetic shielding component, the second magnetic shielding component and the third magnetic shielding component form a receiving groove.

2. The magnetic shielding assembly according to claim 1, characterized in that, The width s1 of the first gap is in the range of 20μm≤s1≤400μm.

3. The magnetic shielding assembly according to claim 1, characterized in that, The width s2 of the second gap is in the range of 20μm≤s2≤400μm.

4. The magnetic shielding assembly according to claim 1, characterized in that, Along the arrangement direction of the second magnetic shielding component, the first magnetic shielding component and the third magnetic shielding component, the width w1 of the first magnetic shielding component is in the range of 2mm≤w1≤10mm.

5. The magnetic shielding assembly according to claim 1, characterized in that, Along the thickness direction of the magnetic shielding component, the height h1 of the first magnetic shielding component is in the range of 0.05mm≤h1≤2.5mm, wherein the thickness direction of the magnetic shielding component intersects with the arrangement direction of the second magnetic shielding component, the first magnetic shielding component and the third magnetic shielding component.

6. The magnetic shielding assembly according to claim 1, characterized in that, Along the arrangement direction of the second magnetic shielding component, the first magnetic shielding component and the third magnetic shielding component, the width w2 of the second magnetic shielding component is in the range of 0.1mm≤w2≤5mm.

7. The magnetic shielding assembly according to claim 1, characterized in that, Along the thickness direction of the magnetic shielding component, the height h2 of the second magnetic shielding component is in the range of 0.2mm≤h2≤5mm, wherein the thickness direction of the magnetic shielding component intersects with the arrangement direction of the second magnetic shielding component, the first magnetic shielding component and the third magnetic shielding component.

8. The magnetic shielding assembly according to claim 1, characterized in that, Along the arrangement direction of the second magnetic shielding component, the first magnetic shielding component, and the third magnetic shielding component, the width w3 of the third magnetic shielding component is in the range of 0.1mm≤w3≤5mm.

9. The magnetic shielding assembly according to claim 1, characterized in that, Along the thickness direction of the magnetic shielding assembly, the height h3 of the third magnetic shielding component is in the range of 0.2mm≤h3≤5mm, wherein the thickness direction of the magnetic shielding assembly intersects with the arrangement direction of the second magnetic shielding component, the first magnetic shielding component and the third magnetic shielding component.

10. The magnetic shielding assembly according to claim 1, characterized in that, The first magnetic shielding component, the second magnetic shielding component, and the third magnetic shielding component are all annular structures. The first magnetic shielding component is arranged around the outer periphery of the second magnetic shielding component, and the third magnetic shielding component is arranged around the outer periphery of the first magnetic shielding component. The magnetic shielding assembly has notches that respectively disconnect the second magnetic shielding component, the first magnetic shielding component, and the third magnetic shielding component.

11. The magnetic shielding assembly according to claim 10, characterized in that, Along the circumferential direction of the magnetic shielding component, the width w of the notch ranges from 0.1mm ≤ w ≤ 50mm.

12. The magnetic shielding assembly according to claim 10, characterized in that, The first magnetic shielding component, the second magnetic shielding component, and the third magnetic shielding component are all circular ring structures. The inner diameter Ri of the second magnetic shielding component is in the range of 15mm≤Ri≤30mm.

13. The magnetic shielding assembly according to any one of claims 1-12, characterized in that, The material of the first magnetic shielding component includes at least one of FeSi alloy, FeSiAl alloy, FeCo alloy, FeNi alloy, FeNiMo alloy, and 400 series ferritic stainless steel. The material of the second magnetic shielding component includes at least one of FeSi alloy, FeSiAl alloy, FeCo alloy, FeNi alloy, FeNiMo alloy, and 400 series ferritic stainless steel. The material of the third magnetic shielding component includes at least one of FeSi alloy, FeSiAl alloy, FeCo alloy, FeNi alloy, FeNiMo alloy, and 400 series ferritic stainless steel.

14. A magnetic attraction component, characterized in that, include: The magnetic shielding assembly according to any one of claims 1-13; as well as A magnet, which is disposed within the receiving groove of the magnetic shielding assembly.

15. The magnetic suction assembly according to claim 14, characterized in that, Along the arrangement direction of the second magnetic shielding component, the first magnetic shielding component, and the third magnetic shielding component, the width w1 of the first magnetic shielding component is greater than the width w4 of the magnet.

16. The magnetic suction assembly according to claim 14, characterized in that, The surface of the first magnetic shielding member facing away from the receiving groove is flush with one end of the second magnetic shielding member and one end of the third magnetic shielding member. Along the thickness direction of the magnetic shielding assembly, the height of the first magnetic shielding member is h1, the height of the second magnetic shielding member is h2, the height of the third magnetic shielding member is h3, and the height of the magnet is h4. Then the magnetic attraction assembly satisfies: h2≥h1+h4, h3≥h1+h4.

17. A wireless charging device, characterized in that, include: Wireless charging module for transmitter; as well as The magnetic component according to any one of claims 14 to 16, wherein the magnetic component is disposed around the outer periphery of the transmitter wireless charging module.

18. An electronic device, characterized in that, include: Receiver wireless charging module; as well as The magnetic component according to any one of claims 14 to 16, wherein the magnetic component is disposed around the outer periphery of the receiving wireless charging module.

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