Underwater wireless charging sealing device and sealing method thereof

Abstract

The present invention provides an underwater wireless charging sealing device and a sealing method thereof, wherein the device comprises: a charging end shell, epoxy resin, an O-ring installation groove and a metal sealing shell; the charging end shell is a hollow cylindrical bottomless integrated structure, and the metal sealing shell is a hollow cylindrical coverless integrated structure; the upper end of the inner wall of the metal sealing shell is evenly provided with multi-level O-ring installation grooves, the O-ring installation grooves are provided with O-rings for sealing, and the bottom of the inner side of the metal sealing shell is provided with two watertight connector joints; the bottom of the charging end shell is placed inside the metal sealing shell, the first flange surface is in contact with the second flange surface, the first bolt hole is overlapped with the second bolt hole, and the bolts pass through the first bolt hole and the second bolt hole respectively to fix the charging end shell and the metal sealing shell; the present invention can be waterproof and pressure-bearing, and can also avoid electromagnetic induction of the packaging shell and the charging coil to affect the work.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless charging, and in particular to an underwater wireless charging sealing device and a sealing method thereof. Background Art

[0002] Underwater engineering equipment has very important tasks to perform. Most existing equipment is wired for contact charging. The sealing structure at the joint has a short service life, is prone to aging and has safety hazards. With the exploration and exploitation of deep-sea resources by major companies, the number of marine engineering equipment is increasing. For marine engineering equipment such as seabed observation and energy collection, charging underwater equipment is a very important link. The sealing method of underwater wireless charging coils is also one of the key technologies. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to propose a non-contact underwater wireless charging sealing device and a sealing method thereof, which can be suitable for areas with high underwater pressure, can be waterproof and pressure-bearing, and can also avoid electromagnetic induction between the packaging shell and the charging coil to affect the work.

[0004] To achieve the above object, the present invention adopts the following specific technical solutions:

[0005] The present invention provides an underwater wireless charging sealing device, comprising: a charging terminal housing, epoxy resin, an O-ring installation groove and a metal sealing housing;

[0006] The charging terminal housing is a hollow cylindrical bottomless integrated structure, and a first flange surface is provided at the bottom end of the outer side of the charging terminal housing, and uniform first bolt holes are provided on the first flange surface;

[0007] A charging terminal assembly is provided at the top of the charging terminal housing, and is sealed and fixed by filling epoxy resin;

[0008] The metal sealed housing is a hollow cylindrical, coverless, integrated structure;

[0009] A second flange surface is arranged at the upper end of the outer side of the metal sealing shell; uniform second bolt holes are arranged on the second flange surface; a multi-stage O-ring installation groove is uniformly arranged at the upper end of the inner wall of the metal sealing shell; an O-ring for sealing is arranged in the O-ring installation groove; and two watertight connector joints are arranged at the bottom of the inner side of the metal sealing shell;

[0010] The bottom of the charging terminal housing is placed inside the metal sealing housing, the first flange surface contacts the second flange surface, the first bolt hole coincides with the second bolt hole, and the bolts pass through the first bolt hole and the second bolt hole respectively to fix the charging terminal housing and the metal sealing housing;

[0011] After assembly, the O-ring is compressed at the junction of the charging terminal housing and the metal sealing housing; the O-ring is compressed to block the gap and form a sealing structure.

[0012] Preferably, the metal sealing shell is made of stainless steel and is quenched after processing.

[0013] Preferably, the charging terminal housing is made of ceramic material, and has rounded corners on the outside to prevent scratches.

[0014] Preferably, an O-ring is provided at the fitting surface of the first flange surface and the second flange surface to prevent the ceramic housing at the charging end from being hard-contacted with the metal sealing housing and causing the ceramic to break.

[0015] The present invention also provides an underwater wireless charging sealing method, comprising:

[0016] First, place the charging terminal assembly inside the charging terminal housing;

[0017] Then fill epoxy resin for sealing, and after the epoxy resin is cured, place the O-ring in the O-ring installation groove of the metal sealing shell for installation, fix the charging end shell and the metal sealing shell after the epoxy resin is cured with bolts, and place them in the underwater working position.

[0018] Compared with the existing technology, the present invention can be applied to areas with relatively high underwater pressure. It is waterproof and pressure-resistant and can also avoid electromagnetic induction between the packaging shell and the charging coil that affects the work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of an underwater wireless charging sealing device provided according to an embodiment of the present invention.

[0020] Figure 2 is a front view of an underwater wireless charging sealing device provided according to an embodiment of the present invention.

[0021] Figure 3 is a schematic structural diagram of an underwater wireless charging sealing device provided according to an embodiment of the present invention.

[0022] The reference numerals therein include: charging terminal assembly 1, first bolt hole 21, second bolt hole 22, epoxy resin 3, watertight connector joint 4, charging terminal housing 5, O-ring mounting groove 6 and metal sealing housing 7. DETAILED DESCRIPTION

[0023] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0025] Figure 1 A perspective view of an underwater wireless charging sealing device according to an embodiment of the present invention is shown.

[0026] Figure 2 A front view of an underwater wireless charging sealing device provided according to an embodiment of the present invention is shown.

[0027] Figure 3 A schematic structural diagram of an underwater wireless charging sealing device provided according to an embodiment of the present invention is shown.

[0028] like Figure 1-3 As shown, the underwater wireless charging sealing device provided by the embodiment of the present invention includes: a charging end housing 5, epoxy resin 3, an O-ring installation groove 6 and a metal sealing housing 7.

[0029] The charging end housing 5 is a hollow cylindrical bottomless integrated structure made of ceramic material, with rounded corners on the outside to prevent scratches, keep the structure evenly stressed and balanced, and evenly stressed underwater. A first flange surface is provided at the bottom end of the outer side of the charging end housing 5. Uniform first bolt holes 21 are provided on the first flange surface.

[0030] A charging terminal assembly 1 is arranged at the top of the charging terminal housing 5 and is sealed and fixed by filling epoxy resin 3 .

[0031] The metal sealing shell 7 is a hollow cylindrical, coverless, integrated structure made of stainless steel, which is quenched after processing. The material has a high cost performance and is corrosion-resistant and pressure-resistant.

[0032] A second flange surface is provided at the upper end of the outer side of the metal sealing shell 7. The second flange surface is provided with uniform second bolt holes 22, the upper end of the inner wall of the metal sealing shell 7 is uniformly provided with multi-stage O-ring installation grooves 6, and the bottom of the inner side of the metal sealing shell 7 is provided with two watertight connector joints 4.

[0033] The bottom of the charging terminal housing 5 is placed inside the metal sealing housing 7, the first flange surface of the charging terminal housing 5 contacts the second flange surface of the metal sealing housing 7, the first bolt hole 21 coincides with the second bolt hole 22, and the bolts pass through the first bolt hole 21 and the second bolt hole 22 respectively to fix the charging terminal housing 5 and the metal sealing housing 7.

[0034] An O-ring is designed on the fitting surface of the metal sealing shell 7 and the flange of the charging end shell 5 to prevent the charging end ceramic shell and the metal sealing shell from hard contact, which may cause the ceramic to break and affect the work. The vertical distance between the second flange surface of the metal sealing shell 7 and the coil in the charging end shell 5 can avoid electromagnetic induction.

[0035] The O-ring is used as a sealing ring and is placed in the O-ring installation groove 6 by a tool. After assembly, it is compressed at the junction of the charging terminal housing 5 and the metal sealing housing 7. It can protect the charging terminal assembly 1 and prevent external seawater from penetrating.

[0036] When the charging terminal housing 5 and the metal sealing housing 7 are fixedly connected by bolts, the multi-stage O-ring is compressed to block the gap, forming a sealing structure.

[0037] The underwater wireless charging sealing method provided by the embodiment of the present invention includes:

[0038] When working, first place the charging terminal assembly 1 inside the charging terminal housing 5, then fill it with epoxy resin 3 for sealing, and wait for the resin to solidify. Then place the O-ring in the O-ring installation groove 6 of the metal sealing housing 7 for installation, and fix the charging terminal housing 5 and the metal sealing housing 7 after the epoxy resin 3 is solidified by bolts and place them in the underwater working position.

[0039] The present invention is based on the basic principle of the law of electromagnetic induction. It uses magnetic induction technology to generate electromotive force by cutting the magnetic field through a conductor. It consists of two coils. When alternating current is connected to the primary coil, a magnetic field is generated. The secondary coil induces an alternating current due to the existence of an alternating magnetic field.

[0040] The transmitter is powered by a 24V DC power supply, and a large capacitor is used to store electricity and energy. The transmitter circuit generates alternating current, and the coil generates a magnetic field. The receiving coil cuts the magnetic field to generate electromotive force, and the secondary coil (receiving coil) generates alternating current, which is then rectified and converted into direct current to supply the load.

[0041] The test method uses a 30 ohm 20W ceramic resistor as the receiving end load for testing, and uses a multimeter to measure the current and voltage in series and parallel. Since this project needs to be carried out underwater, water is added between the transmitting end and the receiving end as an intermediate medium for testing.

[0042] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0043] The above specific implementations of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An underwater wireless charging sealing device, characterized in that: include: Charging terminal housing, epoxy resin, O-ring mounting groove and metal sealing housing; The charging terminal housing is a hollow cylindrical bottomless integrated structure, and a first flange surface is provided at the bottom end of the outer side of the charging terminal housing, and uniform first bolt holes are provided on the first flange surface; A charging terminal assembly is disposed at the top of the charging terminal housing, and is sealed and fixed by filling the epoxy resin; The metal sealed housing is a hollow cylindrical, coverless, integrated structure; A second flange surface is arranged at the upper end of the outer side of the metal sealing shell; uniform second bolt holes are arranged on the second flange surface; a multi-stage O-ring installation groove is uniformly arranged at the upper end of the inner wall of the metal sealing shell; the O-ring installation groove is provided with an O-ring for sealing; and two watertight connector joints are arranged at the bottom of the inner side of the metal sealing shell; The bottom of the charging terminal housing is placed inside the metal sealing housing, the first flange surface is in contact with the second flange surface, the first bolt hole is coincident with the second bolt hole, and bolts pass through the first bolt hole and the second bolt hole respectively to fix the charging terminal housing and the metal sealing housing; After being assembled, the O-ring is compressed at the joint of the charging terminal housing and the metal sealing housing; the O-ring is compressed to block the gap to form a sealing structure.

2. The underwater wireless charging sealing device according to claim 1, characterized in that: The metal sealing shell is made of stainless steel and is quenched after processing.

3. The underwater wireless charging sealing device according to claim 2, characterized in that: The charging terminal housing is made of ceramic material, and has rounded corners on the outside to prevent scratches.

4. The underwater wireless charging sealing device according to claim 3, characterized in that: An O-ring is provided at the fitting surface of the first flange surface and the second flange surface to prevent the ceramic shell of the charging end from being hard-contacted with the metal sealing shell and causing the ceramic to break.

5. An underwater wireless charging sealing method for the underwater wireless charging sealing device according to any one of claims 1 to 4, characterized in that: include: Firstly, the charging terminal assembly is placed inside the charging terminal housing; Then fill the epoxy resin for sealing, and after the epoxy resin is cured, place the O-ring in the O-ring installation groove of the metal sealing shell for installation, and fix the charging end shell and the metal sealing shell after the epoxy resin is cured by bolts and place them in an underwater working position.

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