Electromagnetic enclosure for improving the charging effect of an underwater wireless charging coupler

Abstract

The application relates to the technical field of underwater wireless charging and provides an electromagnetic sealing device for improving the charging effect of an underwater wireless charging coupler, wherein the electromagnetic sealing device comprises a male end and a ferrite, the male end comprises a disc body and a disc bottom, the disc body is arranged in a hollow cone shape with one end being open, the disc bottom is sealed at the opening of the disc body, an outer conical surface of the disc body is used for plug-in cooperation with a female end, and a wireless charging coil is arranged on the outer conical surface; the ferrite is arranged in a multi-layer stacking structure, the ferrite is embedded on an inner conical surface of the disc body at a position corresponding to the wireless charging coil, and the wireless charging coil and each layer of the ferrite are arranged in a staggered and alternating manner along the axial projection of the disc body. The application effectively resists the interference of complex ocean currents and enhances the energy transmission efficiency in the wireless charging process of underwater operation equipment, ensures the stability and high efficiency of energy supply, and thus guarantees the long-term reliable operation of the underwater operation equipment in the marine environment.

Description

Technical Field

[0001] This invention relates to the field of underwater wireless charging technology, and in particular to an electromagnetic enclosure device for improving the charging effect of underwater wireless charging couplers. Background Technology

[0002] As marine construction gradually extends into the deep sea, autonomous underwater vehicles (AUVs) are playing an increasingly important role in fields such as marine surveying, and their endurance issues urgently need to be addressed. With the increasing prevalence of wireless charging, improving the energy transfer efficiency of wireless charging devices has become one of the key methods to enhance the endurance of underwater equipment.

[0003] Current methods for improving the charging efficiency of wireless charging devices mainly involve structural optimization and electrical compensation. This means designing the geometry of the coupler, adding different ferrite or other materials to improve its energy performance, or designing an LCC-S network in the charging circuit to dynamically adjust the compensation capacitor value to offset the inductance changes that may occur during dynamic operation, thereby improving energy transmission efficiency.

[0004] In existing technologies, most wireless charging couplers operate for extended periods in marine environments with high biodiversity and density. If the ferrite is exposed, it is susceptible to corrosion or marine organisms due to its structure.

[0005] Methods to improve the energy transmission performance of couplers through structural design often result in complex structures. This makes it difficult for wireless couplers to accurately complete the docking process during underwater operation, easily leading to docking misalignment and failure to achieve complete coupling. Furthermore, couplers are susceptible to dynamic influences such as ocean currents, significantly reducing their efficiency and stability. At the same time, complex structures also lead to a significant increase in the casting cost of couplers. In addition, problems such as high pressure, corrosion, and biofouling are unavoidable in the underwater seawater working environment, and complex structures can significantly exacerbate the impact of these problems, making cleaning and maintenance work more difficult.

[0006] Meanwhile, for methods that use electrical devices, the circuit design may pose risks of short circuits and leakage when operating in the deep sea; more importantly, although the charging effect is improved, it cannot actually eliminate physical losses and eddy current losses. Summary of the Invention

[0007] This invention provides an electromagnetic enclosure device for improving the charging effect of underwater wireless charging couplers, which solves the defects of low energy transmission efficiency and poor stability of existing underwater wireless charging equipment in complex deep-sea environments. It effectively resists interference from complex ocean currents and enhances the energy transmission efficiency during the wireless charging process of underwater equipment, ensuring the stability and efficiency of energy supply, thereby guaranteeing the long-term reliable operation of underwater equipment in the marine environment.

[0008] This invention provides an electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler, comprising: The male end includes a disc body and a disc bottom. The disc body is a hollow cone shape with one end open. The disc bottom is sealed at the opening of the disc body. The outer cone surface of the disc body is used for insertion and mating with the female end. A wireless charging coil is wound on the outer cone surface. The ferrite is arranged in a multi-layer stacked structure. The ferrite is embedded on the inner conical surface of the disk body at the position corresponding to the wireless charging coil. The layers of ferrite and the wireless charging coil are arranged alternately and staggered along the axial projection of the disk body.

[0009] According to the present invention, an electromagnetic sealing device for improving the charging effect of an underwater wireless charging coupler is provided, wherein the ferrite is arranged in a spiral shape, and a spiral groove is provided on the inner conical surface that is offset from the axial projection of the wireless charging coil, and the spiral ferrite is embedded in the spiral groove.

[0010] According to the present invention, an electromagnetic sealing device for improving the charging effect of an underwater wireless charging coupler is provided, wherein multiple coil grooves are formed on the outer conical surface, the multiple coil grooves and the spiral grooves are staggered and arranged, and the cross sections of the two are not intersected when projected along the thickness direction of the disk.

[0011] According to the present invention, an electromagnetic sealing device for improving the charging effect of an underwater wireless charging coupler is provided. The ferrite is arranged in a ring shape, and the diameter of the multiple layers of ferrite is arranged to increase or decrease along the tapered direction of the disk. An annular groove is formed on the inner conical surface. The annular groove is misaligned with the axial projection of the wireless charging coil. The annular ferrite is embedded in the annular groove, and the annular groove is sealed and filled with adhesive.

[0012] According to the present invention, an electromagnetic sealing device for improving the charging effect of an underwater wireless charging coupler is provided, wherein multiple coil grooves are formed on the outer conical surface, the multiple coil grooves and the annular groove are staggered and arranged, and the cross sections of the two are not intersected when projected along the thickness direction of the disk.

[0013] According to the present invention, an electromagnetic sealing device for improving the charging effect of an underwater wireless charging coupler is provided, wherein the angle between the inner conical surface of the disk and the horizontal plane is the male end tilt angle, and the conical tilt angle of the ferrite is set to be equal to the male end tilt angle, wherein the value of the male end tilt angle is in the range of 30°~60°.

[0014] According to the present invention, an electromagnetic sealing device for improving the charging effect of an underwater wireless charging coupler is provided, wherein the cross-sectional width of the ferrite is w, and the range of the cross-sectional width w is 2mm to 3mm.

[0015] According to the present invention, an electromagnetic sealing device for improving the charging effect of an underwater wireless charging coupler is provided, wherein the cross-sectional height of the ferrite is h, and the tilt angle of the male end is 30°, 45° or 60°. When the male end tilt angle is 30°, the cross-sectional width w of the ferrite is 2.0, 2.5, or 3.0, and the formula for calculating the maximum value of the cross-sectional height h is as follows: ; When the male end tilt angle is 45°, the cross-sectional width w of the ferrite is 2.0, 2.5, or 3.0, and the formula for calculating the maximum value of the cross-sectional height h is as follows: ; When the male end tilt angle is 60°, the cross-sectional width w of the ferrite is 2.0, 2.5, or 3.0, and the formula for calculating the maximum value of the cross-sectional height h is as follows: .

[0016] According to the present invention, an electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler is provided, wherein the cross-sectional height of the ferrite is h, the cross-sectional height of the wireless charging coil is d, and the minimum wall thickness of the disk is D, wherein... .

[0017] An electromagnetic sealing device for improving the charging effect of an underwater wireless charging coupler according to the present invention further includes a female end, wherein a concave ...

[0018] The electromagnetic enclosure device provided by this invention for improving the charging effect of underwater wireless charging couplers employs a hollow conical disk that plugs into a female end, utilizing its self-centering properties to effectively resist interference from ocean currents, providing a stable physical connection foundation for the wireless charging process. Furthermore, multiple layers of stacked ferrite cores are embedded within the conical surface of the disk and alternately arranged with the wireless charging coil along the axial projection to form a multi-layered sandwich magnetic circuit. This provides a low-resistivity conduction path for the magnetic field, physically suppressing leakage flux, eddy current losses, and hysteresis losses, significantly enhancing energy transmission efficiency.

[0019] Furthermore, by embedding the ferrite corresponding to the wireless charging coil within the cone-shaped surface of the disk, seawater, corrosive media, and marine organisms are isolated, ensuring the integrity of the magnetic circuit, extending the service life of the ferrite, and ensuring a continuous, stable, and efficient energy supply. Thus, through the synergistic design of the above structures, anti-interference, high efficiency, and component protection are all taken into account, ensuring the long-term reliable operation of underwater equipment in the marine environment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the upper part of an embodiment of the electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler provided by the present invention.

[0022] Figure 2 yes Figure 1 A schematic diagram of the bottom structure of the electromagnetic enclosure used to improve the charging effect of underwater wireless charging couplers.

[0023] Figure 3 yes Figure 1 A partial cross-sectional view of the middle plate before the wireless charging coil is installed.

[0024] Figure 4 yes Figure 1 A partial cross-sectional view of the middle plate equipped with a wireless charging coil.

[0025] Figure 5 This is a schematic diagram of the structure of the spiral ferrite provided by the present invention.

[0026] Figure 6 This is a schematic diagram of the structure of the cyclic ferrite provided by the present invention.

[0027] Figure 7 'a' is Figure 1 The diagram shows the structure of the central terminal and the arrangement of the ferrite and wireless charging coil.

[0028] Figure 8 This is a schematic diagram illustrating the staggered arrangement principle between the ferrite and the wireless charging coil provided by the present invention.

[0029] Figure 9 (a) is a magnetic field distribution diagram of the wireless charging coupler provided by the present invention without the multilayer ferrite layer; (b) is a magnetic field distribution diagram of the wireless charging coupler provided by the present invention with the multilayer ferrite layer.

[0030] Figure 10 (a) is a graph showing the magnetic field coupling coefficient k of the wireless charging coupler provided by the present invention at 30° operating conditions, corresponding to different ferrite widths, as a function of the ferrite cross-sectional height h; (b) is a graph showing the magnetic field coupling coefficient k of the wireless charging coupler provided by the present invention at 45° operating conditions, corresponding to different ferrite widths, as a function of the ferrite cross-sectional height h; (c) is a graph showing the magnetic field coupling coefficient k of the wireless charging coupler provided by the present invention at 60° operating conditions, corresponding to different ferrite widths, as a function of the ferrite cross-sectional height h.

[0031] Figure 11 (a) is the magnetic field distribution diagram of the wireless charging coupler provided by the present invention under normal operating conditions (coupling coefficient k=0.8532); (b) is the magnetic field distribution diagram of the wireless charging coupler provided by the present invention in a state of impending misalignment (coupling coefficient k=0.7978); (c) is the magnetic field distribution diagram of the wireless charging coupler provided by the present invention in a state of misalignment (coupling coefficient k=0.7721).

[0032] Figure label: 10. An electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler; 100. Male end; 110. Disc body; 111. Outer conical surface; 1111. Coil groove; 1112. Guide wire hole; 112. Inner conical surface; 1121. Helical groove; 1122. Annular groove; 120. Disc bottom; 121. Helical through hole; 122. Extended sheath; 200. Ferrite; 300. Wireless charging coil. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] The following is combined with Figures 1 to 11 The present invention describes an electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler.

[0035] In embodiments of the present invention, such as Figures 1 to 4As shown, the electromagnetic sealing device 10 for improving the charging effect of the underwater wireless charging coupler includes a male end 100 and ferrite 200. The male end 100 includes a disk body 110 and a disk bottom 120. The disk body 110 is a hollow cone shape with one end open. The disk bottom 120 seals the opening of the disk body 110. The outer cone surface 111 of the disk body 110 is used for insertion and mating with the female end. A wireless charging coil 300 is wound on the outer cone surface 111. The ferrite 200 is arranged in a multi-layer stacked structure. The ferrite 200 is embedded on the inner cone surface 112 of the disk body 110 at the position corresponding to the position of the wireless charging coil 300. The layers of ferrite 200 and the wireless charging coil 300 are arranged alternately and staggered along the axial projection of the disk body 110.

[0036] The male end 100 is divided into two parts: a disc body 110 and a disc base 120. The disc body 110 is a hollow cone with a spiral groove structure cut into its outer conical surface 111. The continuous grooves can fix the wireless charging coil 300 to the outer conical surface 111 of the disc body 110. Guide holes 1112 are opened at both ends of the grooves on the outer conical surface 111 for leading the wireless charging coil 300 out of the disc body 110. The disc base 120 has an extended sheath 122 perpendicular to the groove portion for connecting the cable bundle of the underwater equipment. At the same time, the bottom surface of the disc base 120 has multiple spiral through holes 121 for connecting the disc base 120 to the disc body 110 and the underwater equipment.

[0037] The disk 110 is designed as a hollow cone with one open end. First, it is suitable for underwater docking scenarios. The cone-shaped outer contour has self-centering characteristics, which can automatically correct the docking position when plugged into the female end, reducing the risk of docking misalignment caused by ocean current interference and ensuring the stability of the charging process. Second, it provides inner and outer mounting surfaces. The outer cone surface 111 is used to lay the wireless charging coil 300, and the inner cone surface 112 is used to embed the ferrite 200, realizing a layered layout of "wireless charging coil 300-ferrite 200", laying a structural foundation for subsequent magnetic circuit optimization. Third, it optimizes hydrodynamic performance. The cone-shaped structure can disperse the impact force of ocean currents and reduce the attitude deviation of the device when working underwater.

[0038] The bottom of the plate 120 is sealed at the opening to form an internal enclosed space, preventing seawater from entering the plate body 110 and corroding the ferrite 200 or interfering with the magnetic circuit; at the same time, it enhances the overall structural strength of the male end 100, prevents the plate body 110 from deforming under high-pressure seawater environment, and ensures the installation stability of internal components.

[0039] The outer conical surface 111 of the disc body 110 serves as the docking interface between the male end 100 and the female end. The conical outer conical surface 111 matches the conical inner hole of the female end. By utilizing the self-centering function of the conical surface fitting, the male and female ends can be quickly and accurately docked, solving the problems of docking difficulties and easy misalignment caused by the complex structure in the existing technology.

[0040] A wireless charging coil 300 is wound on the outer conical surface 111. The wireless charging coil 300 is the core functional component for energy transmission. Its layout on the outer conical surface 111 allows it to form a highly efficient coupling magnetic field with the transmitting component at the female end after docking, directly undertaking the task of energy reception and powering the underwater equipment.

[0041] Multi-layer stacked ferrite 200 can form a multi-level magnetic permeability structure. Compared with single-layer ferrite 200, it can more fully constrain and strengthen the magnetic field range and improve the magnetic field coupling coefficient. At the same time, the multi-layer structure can disperse magnetic field stress, avoid local magnetic saturation, and ensure long-term stable operation of the magnetic circuit.

[0042] The ferrite 200, corresponding to the position of the wireless charging coil 300, is embedded on the inner conical surface 112 of the disk body 110. This serves two purposes: first, it optimizes the magnetic circuit. By embedding the ferrite 200 at the position corresponding to the inner conical surface 112 of the receiving component, it can concentrate the magnetic field through its high magnetic permeability, compress the magnetic field diffusion range, reduce leakage magnetic loss, and improve energy transmission efficiency; second, it provides protection. The embedded design prevents the ferrite 200 from being directly exposed to the marine environment, isolating it from seawater corrosion and marine organism attachment, ensuring the integrity of the magnetic circuit, and extending the service life of the ferrite 200.

[0043] The ferrite 200 layers and the wireless charging coil 300 are arranged in a staggered and alternating manner along the axial projection of the disk 110. This staggered and alternating layout forms a multi-layer sandwich magnetic circuit structure of "wireless charging coil 300-ferrite 200-wireless charging coil 300", which can further optimize the magnetic field distribution and suppress eddy current loss and hysteresis loss. At the same time, the staggered design avoids magnetic field interference caused by the overlap of the ferrite 200 and the receiving component in the axial projection, ensuring that the coupling magnetic field between the receiving component and the mother end transmitting component is not affected, thus taking into account both energy transmission efficiency and stability.

[0044] The multilayer ferrite 200 is used with the male end 100 of a conical coupler. The conical coupler has good self-centering capabilities and is less affected by ocean currents, creating a stable and effective working environment for the multilayer ferrite 200. To verify the application effect of using the multilayer ferrite 200, the coupling coefficient k in the magnetic field is selected as the test standard, such as... Figures 9 to 11 As shown, compared with the case without ferrite 200, placing ferrite 200 inside the male terminal of the coupler can increase the coupling coefficient k by 11.69% and the maximum magnetic induction intensity by 246.09%, which significantly improves the magnetic field coupling effect.

[0045] This application utilizes a hollow conical disk 110 that plugs into a female end, leveraging its self-centering properties to effectively resist interference from ocean currents, providing a stable physical connection foundation for the wireless charging process. Furthermore, multi-layered stacked ferrite 200 is embedded within the conical surface 112 of the disk 110, and alternately arranged with the wireless charging coil 300 along the axial projection to form a multi-layered sandwich magnetic circuit. This provides a low-resistivity conduction path for the magnetic field, physically suppressing leakage flux, eddy current losses, and hysteresis losses, significantly enhancing energy transmission efficiency.

[0046] Furthermore, by embedding the ferrite 200 at the position corresponding to the wireless charging coil 300 within the inner conical surface 112 of the disk 110, seawater, corrosive media, and marine organisms are isolated, ensuring the integrity of the magnetic circuit, extending the service life of the ferrite 200, and ensuring a continuous, stable, and efficient energy supply. Thus, through the synergistic design of the above structures, anti-interference, high efficiency, and component protection are all taken into account, ensuring the long-term reliable operation of underwater equipment in the marine environment.

[0047] Reference Figure 5 According to the present invention, an electromagnetic sealing device 10 for improving the charging effect of an underwater wireless charging coupler is provided. The ferrite 200 is arranged in a spiral shape, and a spiral groove 1121 is provided on the inner conical surface 112, which is offset from the axial projection of the wireless charging coil 300. The spiral ferrite 200 is embedded in the spiral groove 1121.

[0048] Understandably, the ferrite 200 is arranged in a spiral shape, which can be adapted to the conical structure of the disk 110 and the spiral groove 1121. It can be continuously extended along the conical surface without segmented splicing, simplifying the assembly process. The spiral structure can form a continuous spiral magnetic circuit. Compared with discrete toroidal ferrite 200, the magnetic field constraint and conduction effect is more uniform, reducing leakage magnetic loss caused by magnetic circuit breakpoints. The integrated spiral structure can maintain its shape stability. After installation, no additional complex fixing structure is required, reducing the space occupied by the internal space of the male end 100.

[0049] The spiral groove 1121 provides a precise installation positioning reference for the spiral ferrite 200, ensuring that the arrangement trajectory of the ferrite 200 along the inner conical surface 112 is consistent with the design, and guaranteeing the accuracy of the magnetic circuit position. The groove structure can physically limit the ferrite 200, preventing it from shifting when impacted by ocean currents or equipment vibration. The design of the axial projection misalignment between the spiral groove 1121 and the wireless charging coil 300 avoids the overlap of the ferrite 200 and the wireless charging coil 300 on the outer conical surface 111 in the projection, preventing magnetic field interference between the two, while ensuring the precise forming of the multi-layer sandwich magnetic circuit structure of "wireless charging coil 300-ferrite 200" and optimizing the magnetic field coupling effect.

[0050] Reference Figure 3 and Figure 4According to the present invention, an electromagnetic sealing device 10 for improving the charging effect of an underwater wireless charging coupler is provided, wherein a multi-turn coil groove 1111 is formed on the outer conical surface 111, the multi-turn coil groove 1111 and the spiral groove 1121 are staggered and arranged with their cross sections not intersecting when projected along the thickness direction of the disk body 110.

[0051] Understandably, the multi-turn coil groove 1111 on the outer conical surface 111 provides an installation and positioning structure for the wireless charging coil 300, ensuring that the coil is precisely and regularly arranged along the outer conical surface 111, and preventing the coil from shifting or deforming during ocean current impact or docking. At the same time, the groove can provide physical protection for the coil, reducing damage to the coil caused by deep-sea high pressure, friction and other factors, and ensuring the stability of energy reception.

[0052] The multi-turn coil slots 1111 and the spiral slots 1121 are staggered with each other, ensuring that the coil slots 1111 on the outer conical surface 111 and the spiral slots 1121 on the inner conical surface 112 do not overlap in terms of spatial layout. This makes the coil and ferrite 200 form a multi-layer sandwich structure of "wireless charging coil 300-ferrite 200" with axial projection misalignment, which optimizes the magnetic field distribution path and suppresses leakage magnetic field and eddy current loss. At the same time, the staggered arrangement can avoid excessive concentration of magnetic field in the same axial position, prevent local magnetic saturation, and improve magnetic field coupling efficiency.

[0053] The cross-sections of the two components are designed so that their projections along the thickness direction of the disk 110 do not intersect, thus preventing the coil groove 1111 and the spiral groove 1121 from connecting in the thickness direction of the disk 110 and forming a weak point in stress, preventing the disk 110 from cracking or deforming under the high pressure environment of the deep sea. Secondly, it eliminates spatial interference between the coil and the ferrite 200, ensuring that their respective installation spaces are independent and do not affect each other's assembly accuracy and working stability. It also maintains the integrity of the wall of the disk 110, further enhancing the sealing and protection effect on the internal ferrite 200 and preventing seawater intrusion.

[0054] Reference Figure 6 According to the present invention, an electromagnetic sealing device 10 for improving the charging effect of an underwater wireless charging coupler is provided. The ferrite 200 is arranged in a ring shape. The diameter of the multilayer ferrite 200 increases or decreases along the tapered direction of the disk 110. An annular groove 1122 is provided on the inner conical surface 112. The annular groove 1122 is misaligned with the axial projection of the wireless charging coil 300. The annular ferrite 200 is embedded in the annular groove 1122 and the annular groove 1122 is sealed and filled with glue.

[0055] It is understandable that the ferrite 200 is arranged in a ring shape. The ring structure fits the conical inner surface of the disk 110 and can form a closed magnetic circuit along the circumference of the conical surface. Compared with the non-closed structure, it can more efficiently constrain the magnetic field and reduce leakage magnetic loss. At the same time, the ring ferrite 200 is easier to process than the one-piece spiral ferrite 200, which can reduce manufacturing costs and meet the needs of large-scale production.

[0056] The diameter of the multi-layer ferrite 200 increases or decreases along the tapered direction of the disk 110. The design of the diameter gradually changing with the tapered direction ensures that each layer of annular ferrite 200 can be completely fitted with the inner conical surface 112 of the disk 110, ensuring the precise installation position of each layer of ferrite 200. At the same time, it forms a spatial correspondence with the wireless charging coil 300 whose outer conical surface 111 has a gradually changing diameter, providing adaptability support for the multi-layer sandwich magnetic circuit structure of "wireless charging coil 300-ferrite 200", ensuring that the magnetic field enhancement effect uniformly covers the entire coupling area.

[0057] An annular groove 1122 is provided on the inner conical surface 112 to provide a dedicated installation and positioning reference for the annular ferrite 200, ensuring that each layer of ferrite 200 is arranged in an orderly manner along the height direction of the conical surface, and preventing the ferrite 200 from undergoing circumferential or axial displacement when impacted by ocean currents or vibrating equipment; the groove structure can also restrict the radial degree of freedom of the ferrite 200, ensuring the stability of the magnetic circuit position.

[0058] The annular groove 1122 and the axial projection of the wireless charging coil 300 are staggered to avoid the overlap of the axial projection of the coil and the ferrite 200 in terms of spatial layout, thus preventing magnetic field interference between the two. At the same time, the alternating sandwich structure of "wireless charging coil 300-ferrite 200-wireless charging coil 300" is precisely constructed to optimize the magnetic field distribution path, further suppress eddy current loss and hysteresis loss, and improve energy transmission efficiency.

[0059] The annular groove 1122 is sealed with sealant. By curing the sealant, the originally independent annular ferrite 200 is firmly fixed in the groove, which makes up for the defect that the annular ferrite 200 cannot be stabilized and prevents it from loosening and shifting when working underwater. At the same time, the sealant can fill the gap between the groove and the ferrite 200, forming a sealing barrier to further prevent seawater intrusion and ensure the integrity of the internal magnetic circuit. In addition, the sealant can enhance the structural strength of the disk 110 and resist the extrusion and deformation of the disk 110 under the high pressure of the deep sea.

[0060] Reference Figure 3 and Figure 4According to the present invention, an electromagnetic sealing device 10 for improving the charging effect of an underwater wireless charging coupler is provided, wherein a multi-turn coil groove 1111 is formed on the outer conical surface 111, the multi-turn coil groove 1111 and the annular groove 1122 are staggered and arranged with their cross sections not intersecting when projected along the thickness direction of the disk body 110.

[0061] Understandably, the outer conical surface 111 has multiple coil slots 1111 to provide a dedicated positioning and installation structure for the wireless charging coil 300. This ensures that the coil is arranged in precise and orderly layers along the outer conical surface 111, preventing the coil from shifting or deforming due to ocean current impact or docking vibration. At the same time, the slots can provide physical protection for the coil, reducing damage to the coil caused by deep-sea high pressure, friction, and other factors, and ensuring the stability and reliability of energy reception.

[0062] The multi-turn coil slots 1111 and the annular slots 1122 are staggered with each other. From a spatial layout perspective, the coil slots 1111 on the outer conical surface 111 and the annular slots 1122 on the inner conical surface 112 form an axial projection misalignment relationship. This precisely constructs a multi-layer sandwich magnetic circuit structure of "wireless charging coil 300-ferrite 200-wireless charging coil 300", optimizes the magnetic field distribution path, and suppresses leakage magnetic field and eddy current loss. At the same time, it avoids excessive concentration of the magnetic field in the same axial position, prevents local magnetic saturation, and improves the magnetic field coupling efficiency.

[0063] The cross-sections of the two components are designed so that their projections along the thickness direction of the disk 110 do not intersect, thus preventing the coil groove 1111 and the spiral groove 1121 from connecting in the thickness direction of the disk 110 and forming a weak point in stress, preventing the disk 110 from cracking or deforming under the high pressure environment of the deep sea. Secondly, it eliminates spatial interference between the coil and the ferrite 200, ensuring that their respective installation spaces are independent and do not affect each other's assembly accuracy and working stability. It also maintains the integrity of the wall of the disk 110, further enhancing the sealing and protection effect on the internal ferrite 200 and preventing seawater intrusion.

[0064] Reference Figure 7 and Figure 8 According to the present invention, an electromagnetic sealing device 10 for improving the charging effect of an underwater wireless charging coupler is provided. The angle between the inner conical surface 112 of the disk 110 and the horizontal plane is the male end tilt angle. The conical tilt angle of the ferrite 200 is set to be equal to the male end tilt angle. The value of the male end tilt angle is in the range of 30° to 60°.

[0065] Understandably, the inner conical surface 112 of the disk 110 has a common inclination angle with the horizontal plane, and the conical inclination angle of the ferrite 200 is equal to this angle, achieving structural compatibility and ensuring that the ferrite 200 can be completely fitted and installed along the inner conical surface 112. Whether the ferrite 200 is spiral or annular, it can coincide with the trajectory of the inner conical surface 112, simplifying the assembly process. The consistent inclination angle matches the magnetic permeation direction of the ferrite 200 with the distribution direction of the magnetic field on the conical surface, reducing directional losses during magnetic field conduction and improving magnetic field coupling efficiency. Under ocean current impact or deep-sea high-pressure environments, the inclination angle matching ensures a uniform distribution of contact stress between the ferrite 200 and the tank, avoiding component damage caused by localized stress concentration.

[0066] The range of the male end tilt angle is 30°~60°. When the tilt angle is less than 30°, the cone surface is too flat, which will result in an excessively long winding length of the wireless charging coil 300 and limited space for the ferrite 200 arrangement. At the same time, it will reduce the self-centering effect of the cone structure and make it susceptible to docking misalignment due to ocean current interference. When the tilt angle is greater than 60°, the cone surface is too steep, which will greatly increase the difficulty of coil installation and reduce the magnetic field coupling area between the ferrite 200 and the coil, thus weakening the magnetic field strengthening effect. The range of 30°~60° can simultaneously meet the multiple technical requirements of self-centering and precise docking, convenient installation of the coil and ferrite 200, and efficient magnetic field coupling.

[0067] Reference Figure 7 and Figure 8 According to the present invention, an electromagnetic sealing device 10 for improving the charging effect of an underwater wireless charging coupler is provided, wherein the cross-sectional width of the ferrite 200 is w, and the range of the cross-sectional width w is 2mm to 3mm.

[0068] Understandably, underwater wireless charging devices typically require installation and use within limited space, thus placing strict requirements on the dimensions of each component. The 2mm-3mm ferrite 200, with its relatively narrow cross-sectional width, can meet the needs of magnetic field guidance and focusing without occupying excessive space. This allows the ferrite 200 to better fit the internal structure of the disk 110, enabling a miniaturized and compact design of the device, facilitating installation and integration into underwater equipment.

[0069] If w is less than 2mm, the cross-sectional area of ​​ferrite 200 is too small, resulting in insufficient magnetic flux carrying capacity. This makes it impossible to fully utilize the functions of confining the magnetic field and suppressing leakage magnetic flux, thus limiting the improvement in magnetic field coupling efficiency. If w is greater than 3mm, the cross-sectional area of ​​ferrite 200 is too large, which will reduce its compatibility with the annular groove 1122 / spiral groove 1121 of the inner conical surface 112 of the disk 110. This will not only increase the assembly difficulty but also occupy too much internal space and may even compress the design margin of the coil groove 1111, affecting the arrangement of the wireless charging receiver component. The range of 2mm to 3mm can achieve the optimal match between the wall thickness and groove size of the disk 110 while ensuring the magnetic permeability of ferrite 200, thus balancing magnetic circuit enhancement and structural compactness.

[0070] Reference Figure 7 , Figure 8 and Figure 10 According to the present invention, an electromagnetic sealing device 10 for improving the charging effect of an underwater wireless charging coupler is provided, wherein the cross-sectional height of the ferrite 200 is h, and the male end tilt angle is 30°, 45° or 60°. When the male end inclination angle is 30°, the cross-sectional width w of ferrite 200 can be 2.0, 2.5, or 3.0. The formula for calculating the maximum value of the corresponding cross-sectional height h is as follows: ; When the male end inclination angle is 45°, the cross-sectional width w of ferrite 200 can be 2.0, 2.5, or 3.0. The formula for calculating the maximum value of the corresponding cross-sectional height h is as follows: ; When the male end inclination angle is 60°, the cross-sectional width w of ferrite 200 can be 2.0, 2.5, or 3.0. The formula for calculating the maximum value of the corresponding cross-sectional height h is as follows: .

[0071] Reference Figure 8 This diagram illustrates the misalignment failure principle of ferrite at different male end tilt angles. It visually demonstrates the matching relationship between the ferrite cross-sectional height and the male end tilt angle, as well as the misalignment failure process when the critical value is exceeded. Here, θ is the conical tilt angle of the ferrite; h0 is the maximum critical height at which the ferrite will not misalign when the male end tilt angle is 30°, corresponding to the calculation formula for the maximum value of h under the 30° condition. h1 and h2 represent the maximum critical heights at which the ferrite will not misalign when the male end tilt angles are 45° and 60°, respectively.

[0072] Understandable This represents the maximum value of the cross-sectional height h. The design of the width and height of the ferrite 200 cross-section is related to the tilt angle of the male terminal of the wireless charging coupler. The value is determined according to the selected male terminal tilt angle. Considering the equipment's working environment, material processing difficulty, structural strength, and manufacturing tolerances, the width value is selected. The effective range of values ​​for the cross-sectional height of ferrite 200 is determined based on the male end tilt angle and the cross-sectional width of ferrite 200, as detailed in Table 1.

[0073] Table 1. Effective working range of ferrite width and height for different male end tilt angles.

[0074] Reference Figure 10 Under normal docking conditions and without axial or radial misalignment, comparisons under different operating conditions reveal that adding multilayer ferrite 200 significantly improves the magnetic field coupling effect. For a 30° operating condition, adding multilayer ferrite 200 increases the coupling coefficient k by approximately 13.78%; for a 45° operating condition, it increases k by approximately 17.38%; and for a 60° operating condition, it increases k by approximately 19.02%.

[0075] Reference Figure 11 When the wireless charging coupler is misaligned, gaps appear between the layers of ferrite 200, weakening the electromagnetic optimization and sealing effects, thus affecting the coupler's performance and causing a decrease in the magnetic field coupling coefficient k. Therefore, in practical applications, the effective operating parameter range should be strictly adhered to to avoid misalignment.

[0076] Reference Figure 7 According to the present invention, an electromagnetic enclosure device 10 for improving the charging effect of an underwater wireless charging coupler is provided, wherein the cross-sectional height of the ferrite 200 is h, the cross-sectional height of the wireless charging coil is d, and the minimum wall thickness of the disk body 110 is D, wherein... .

[0077] Understandably, by limiting the minimum wall thickness D, it is possible to ensure that the disk 110 can simultaneously accommodate the ferrite groove of the inner conical surface 112 and the coil groove 1111 of the outer conical surface 111, while maintaining sufficient solid wall thickness between the grooves to avoid stress weak points due to excessively thin walls. In the high-pressure environment of the deep sea, this wall thickness can effectively resist seawater pressure, prevent the disk 110 from deforming or cracking, and ensure the structural stability of the device under extreme operating conditions.

[0078] In some embodiments, an electromagnetic sealing device 10 for improving the charging effect of an underwater wireless charging coupler according to the present invention further includes a female end, the female end having a concave concave conical mating surface for interlocking with an outer conical surface 111, and a wireless charging coil 300 wound around the conical mating surface.

[0079] It is understandable that the female end and the male end 100 constitute a complete energy transmission pairing structure for the underwater wireless charging coupler, and the two work together to achieve wireless charging of underwater devices.

[0080] The female end has a concave inner surface that forms a conical mating surface that engages with the outer conical surface 111 of the male end 100. The conical mating surface and the outer conical surface 111 of the male end 100 are complementary conical structures. During the engagement, the conical surfaces can automatically correct the docking deviation, significantly reducing the risk of docking misalignment caused by ocean current interference and ensuring the stability of the charging process. At the same time, it can increase the magnetic field coupling area. Compared with planar docking, the conical surface contact method allows for a larger overlap area between the wireless charging coil 300 of the male end 100 and the wireless charging coil 300 of the female end, optimizing the magnetic field coupling path and improving energy transmission efficiency.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler, characterized in that, include: The male end includes a disc body and a disc bottom. The disc body is a hollow cone shape with one end open. The disc bottom is sealed at the opening of the disc body. The outer cone surface of the disc body is used for insertion and mating with the female end. A wireless charging coil is wound on the outer cone surface. The ferrite is arranged in a multi-layer stacked structure. The ferrite is embedded on the inner conical surface of the disk body at the position corresponding to the wireless charging coil. The layers of ferrite and the wireless charging coil are arranged alternately and staggered along the axial projection of the disk body.

2. The electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler according to claim 1, characterized in that, The ferrite is arranged in a spiral shape, and a spiral groove is formed on the inner cone surface that is offset from the axial projection of the wireless charging coil. The spiral ferrite is embedded in the spiral groove.

3. The electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler according to claim 2, characterized in that, Multiple coil grooves are formed on the outer conical surface. The multiple coil grooves and the spiral grooves are staggered and arranged with their cross-sections not intersecting when projected along the thickness direction of the disk.

4. The electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler according to claim 1, characterized in that, The ferrite is arranged in a ring shape, and the diameter of the multiple layers of ferrite increases or decreases along the tapered direction of the disk. An annular groove is formed on the inner conical surface. The annular groove is misaligned with the axial projection of the wireless charging coil. The annular ferrite is embedded in the annular groove, and the annular groove is sealed and filled with adhesive.

5. The electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler according to claim 4, characterized in that, Multiple coil grooves are formed on the outer conical surface. The multiple coil grooves and the annular groove are staggered and arranged, and their cross-sections do not intersect when projected along the thickness direction of the disk.

6. The electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler according to claim 1, characterized in that, The angle between the inner conical surface of the disk and the horizontal plane is the male end tilt angle. The conical tilt angle of the ferrite is set to be equal to the male end tilt angle, wherein the value of the male end tilt angle is in the range of 30°~60°.

7. The electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler according to claim 6, characterized in that, The cross-sectional width of the ferrite is w, wherein the cross-sectional width w ranges from 2 mm to 3 mm.

8. The electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler according to claim 7, characterized in that, The cross-sectional height of the ferrite is h, and the male end tilt angle is 30°, 45° or 60°. When the male end tilt angle is 30°, the cross-sectional width w of the ferrite is 2.0, 2.5, or 3.0, and the formula for calculating the maximum value of the cross-sectional height h is as follows: ； When the male end tilt angle is 45°, the cross-sectional width w of the ferrite is 2.0, 2.5, or 3.0, and the formula for calculating the maximum value of the cross-sectional height h is as follows: ； When the male end tilt angle is 60°, the cross-sectional width w of the ferrite is 2.0, 2.5, or 3.0, and the formula for calculating the maximum value of the cross-sectional height h is as follows: 。 9. The electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler according to claim 1, characterized in that, The cross-sectional height of the ferrite is h, the cross-sectional height of the wireless charging coil is d, and the minimum wall thickness of the disk is D. .

10. The electromagnetic enclosure device for improving the charging effect of an underwater wireless charging coupler according to any one of claims 1-9, characterized in that, It also includes a female end, which has a concave concave tapered mating surface for interlocking with the outer tapered surface, and a wireless charging coil is wound around the tapered mating surface.

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