Underwater wireless charging method

Abstract

The application discloses an underwater wireless charging method, comprising the step of using an underwater wireless charging energy pickup, which realizes wireless charging through a transmitting coil and a receiving coil connected by magnetic coupling; characterized in that: the method further comprises a coil processing step: the transmitting coil is processed into at least one pair of transmitting coils adjacent to each other and independent of each other, and the directions of the magnetic fields excited by the two transmitting coils in each pair of transmitting coils adjacent to each other and independent of each other are intersected. The application has the advantages that: the complexity and difficulty of the analysis of the underwater wireless charging model are simplified, the design calculation amount is reduced, the efficiency and accuracy of the performance analysis of the system are improved, and the feasibility of the wireless charging system (design) is improved.

Description

Technical Field

[0001] This invention belongs to the field of underwater wireless charging, and specifically relates to an underwater wireless charging method. Background Technology

[0002] Electric underwater equipment (such as underwater robots or underwater vehicles) requires a power supply to operate continuously underwater. Underwater wireless charging technology is one way to supply power to underwater equipment.

[0003] For example, as shown in the "Underwater Wireless Charging Device for Autonomous Underwater Vehicles" disclosed in announcement number CN105703458A, the current energy pickup method for underwater wireless charging is usually a flat-panel type (using a flat coil module). That is, the coupling mechanism between the transmitter and receiver is installed inside the flat panel, and energy is transferred from the transmitter to the receiver through magnetic coupling. Because, in order to transmit greater power over the same transmission distance, the area of ​​the coupling mechanism between the transmitter and receiver needs to be continuously increased, this results in the space occupied by this area and the supporting structure.

[0004] Furthermore, existing technologies also utilize a modular design for the coupling mechanism, which facilitates its installation and maintenance. However, in conventional modular designs, there is still mutual coupling between adjacent transmitting coils and adjacent receiving coils (see...). Figure 1 (As shown) — Lp1 is coupled with Lp2, Ls1, and Ls2, which increases the workload and difficulty in product model analysis and parameter design (see...). Figure 2 As shown in the figure, this is not conducive to designing a better underwater wireless charging system.

[0005] Based on this, the applicant is considering designing an underwater wireless charging method that offers better overall application results and can help improve system performance. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide an underwater wireless charging method with better overall application effect and to help improve system performance.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] An underwater wireless charging method includes the step of using an underwater wireless charging energy pickup device, which achieves wireless charging through a transmitting coil and a receiving coil magnetically coupled together; characterized in that:

[0009] It also includes a coil processing step: processing the transmitting coil into at least one pair of adjacent and independent transmitting coils, wherein the magnetic field directions generated by the two transmitting coils in each pair of adjacent and independent transmitting coils intersect.

[0010] Compared with existing technologies, the underwater wireless charging method of the present invention has the following advantages:

[0011] In each pair of adjacent and independent transmitting coils: the magnetic fields generated by the two adjacent transmitting coils are generally intersecting, thus decoupling from each other; when the receiving coil is directly opposite the transmitting coil within the magnetic coupling distance, the receiving coil senses the magnetic field generated by the transmitting coil, generates alternating current and generates a magnetic field.

[0012] Similarly, in each pair of adjacent and independent receiving coils: the magnetic fields generated by adjacent receiving coils are also intersecting, thus decoupled from each other (i.e., Figure 2 In this context, M1-2- and M1+2+ can be ignored, as can M12 and M21. The coupling of the four sets of coils is only between M11, M22, M33, and M44.

[0013] Therefore, the underwater wireless charging method of this technical solution can achieve the following:

[0014] Decoupling adjacent transmitting coils (receiving coils) simplifies the complexity and difficulty of underwater wireless charging model analysis and reduces the amount of design calculations, thereby helping to improve the efficiency and accuracy of system performance analysis and the feasibility of wireless charging system (design). Attached Figure Description

[0015] Figure 1 Schematic diagram of the existing segmented coupling mechanism

[0016] Figure 2 A schematic diagram of an existing modular coupling mechanism circuit.

[0017] Figure 3 A circuit diagram of the modular coupling mechanism of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the first embodiment of the underwater wireless charging energy pickup device of the present invention.

[0019] Figure 5 for Figure 4 A schematic diagram of an underwater wireless charging energy pickup device in wireless charging mode.

[0020] Figure 6 This is a schematic diagram of the structure of a second embodiment of the underwater wireless charging energy pickup device of the present invention.

[0021] Figure 7 for Figure 6 A schematic diagram of an underwater wireless charging energy pickup device in wireless charging mode.

[0022] Figure 8 This is a schematic diagram of the third embodiment of the underwater wireless charging energy pickup device of the present invention.

[0023] Figure 9 This is a schematic diagram of the fourth embodiment of the underwater wireless charging energy pickup device of the present invention.

[0024] Figure 10 This is a schematic diagram of the fifth embodiment of the underwater wireless charging energy pickup device of the present invention.

[0025] Figure 11 This is a schematic diagram of the sixth embodiment of the underwater wireless charging energy pickup device of the present invention.

[0026] Figure 12 This is a schematic diagram of the seventh embodiment of the underwater wireless charging energy pickup device of the present invention.

[0027] The diagram is marked as follows:

[0028] LP transmitter (equipped with a transmitting coil)

[0029] LS receiver (equipped with a receiving coil)

[0030] 1 transmitting coil

[0031] 2. Receiving coil: 21. Mounting substrate

[0032] 3. Rectangular structure

[0033] 4-claw structure

[0034] 5 hinges

[0035] 6 return springs

[0036] 7 Intermediate Connectors

[0037] 8 waterproof servo motors: 81 mounting block, 82 U-shaped mounting plate Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings.

[0039] An underwater wireless charging method includes the step of using an underwater wireless charging energy pickup device, which realizes wireless charging through a transmitting coil and a receiving coil connected by magnetic coupling; it also includes a coil processing step: processing the transmitting coil into at least one pair of adjacent and independent transmitting coils, wherein the magnetic field directions generated by the two transmitting coils in each pair of adjacent and independent transmitting coils intersect.

[0040] Compared with existing technologies, the underwater wireless charging method of the present invention has the following advantages:

[0041] In each pair of adjacent and independent transmitting coils: the magnetic fields generated by the two adjacent transmitting coils are generally intersecting, thus decoupling from each other; when the receiving coil is directly opposite the transmitting coil within the magnetic coupling distance, the receiving coil senses the magnetic field generated by the transmitting coil, generates alternating current and generates a magnetic field.

[0042] Similarly, in each pair of adjacent and independent receiving coils: the magnetic fields generated by adjacent receiving coils are also intersecting, thus decoupled from each other (i.e., Figure 2 In this context, M1-2- and M1+2+ can be ignored, as can M12 and M21. The coupling of the four sets of coils is only between M11, M22, M33, and M44.

[0043] Therefore, the underwater wireless charging method of this technical solution can achieve the following:

[0044] Decoupling adjacent transmitting coils (receiving coils) simplifies the complexity and difficulty of underwater wireless charging model analysis and reduces the amount of design calculations, thereby helping to improve the efficiency and accuracy of system performance analysis and the feasibility of wireless charging system (design).

[0045] like Figure 12 As shown, the transmitting coil consists of multiple stepped, continuously distributed blocks.

[0046] This increases the coupling area between the transmitting and receiving coils within the same length, width, and height, thereby helping to improve the power transmission capacity.

[0047] The transmitting coil is disposed on at least two consecutive surfaces in the same circumferential direction of the rectangular structure; the receiving coil is disposed in a one-to-one correspondence with the receiving coil.

[0048] The receiving coils together clamp and wrap around the transmitting coil in the same circumferential direction of the rectangular structure to achieve coupling connection.

[0049] The rectangular structure ensures that each face is perpendicular to the adjacent face, thus ensuring that the magnetic field directions generated by adjacent transmitting coils are intersecting overall, thereby decoupling them.

[0050] The transmitting coils are connected in series or in parallel; the receiving coils are connected in parallel.

[0051] During the process of clamping and wrapping the transmitting coil with all the receiving coils, it is difficult to ensure that the transmitting and receiving coils are aligned one-to-one, and misalignment of the transmitting and receiving coils is likely to occur. In this technical solution, the receiving coils are connected in parallel, which can increase the power threshold of each receiving coil (thereby helping to improve the receiving power), and can also meet the normal functioning of the system when the transmitting and receiving coils are misaligned (e.g., Figure 3 As shown, Lp1 can work normally with Ls2, Lp2 with Ls3, Lp3 with Ls4, and Lp4 with Ls1, thus providing greater flexibility.

[0052] Each of the aforementioned transmitting and receiving coils is a flat coil module.

[0053] Flat coil modules have a larger coupling area and heat dissipation area, making them more reliable in use.

[0054] The transmitting coils are arranged on four to six surfaces of the rectangular structure.

[0055] In this way, compared to a single transmitting and receiving coil, this solution can make full use of four to six surfaces of the rectangular structure to set up the transmitting coil, and can transmit four or even six times the power.

[0056] like Figure 4 and 5 The first embodiment is shown (the transmitting coil is disposed on the four continuous surfaces of the rectangular structure):

[0057] Each receiving coil is fixedly mounted on a mounting base made of a non-ferromagnetic and rigid material; adjacent mounting bases are fixedly connected by a fixing connector, and all mounting bases together form a ring-shaped structure.

[0058] The hollowed-out portion in the middle of the ring-shaped structure is used for the lateral insertion of the rectangular structure containing the transmitting coil.

[0059] The structure of "multiple receiving coils being fixedly connected by a fixed connector to form a ring-shaped structure" has the advantages of simple structure and easier processing and production; and when the underwater equipment needs to be charged, after the underwater equipment sails into the charging dock and completes its positioning, it extends out of the above-mentioned ring-shaped structure; then the rectangular structure where the transmitting coil is located can be inserted laterally into the above-mentioned ring-shaped structure for wireless charging; and it is also relatively easy to operate.

[0060] In this embodiment: preferably, the transmitting coil and the receiving coil are mounted on an aluminum alloy mounting base; and adjacent mounting bases with receiving coils are fixedly connected by connectors made of stainless steel or aluminum alloy.

[0061] like Figure 6 and 7 The second embodiment is shown below:

[0062] The difference between this embodiment and the first embodiment is that the rectangular structure is a hollow structure.

[0063] like Figure 8 The third embodiment is shown below:

[0064] The difference between this embodiment and the first embodiment is that:

[0065] The transmitting coil is disposed on five consecutive surfaces of the rectangular structure.

[0066] like Figure 9 The fourth embodiment is shown below:

[0067] The difference between this embodiment and the first embodiment is that:

[0068] Each receiving coil is fixedly mounted on a mounting base made of a non-ferromagnetic and rigid material; adjacent mounting bases are connected by flexible connectors, so that all mounting bases can be unfolded into a flat plate or folded into a claw-shaped structure, the claw-shaped structure being used to clamp onto the rectangular structure.

[0069] The aforementioned mounting base plates can be unfolded into a flat plate or folded into a claw-like structure, which can be done manually by an operator. When folded into a claw-like structure, a limiting and retaining structure can be used for retention.

[0070] like Figure 10 The fifth embodiment is shown below:

[0071] The difference between this embodiment and the first embodiment is that:

[0072] Each receiving coil is fixedly mounted on a mounting base made of a non-ferromagnetic and rigid material; adjacent mounting bases are connected by a controllable connector, and the multiple mounting bases can be unfolded into a flat plate or folded into a claw-shaped structure, the claw-shaped structure being used to clamp onto the rectangular structure.

[0073] In this way, multiple receiving coils can be manipulated to retract into a claw-like sleeve and clamp onto a rectangular structure to achieve wireless charging. The multiple receiving coils can be manipulated to unfold and detach from the rectangular structure, facilitating timely separation between the underwater equipment and the transmitting coil, and ensuring the safety and timeliness of charging and detachment.

[0074] The controllable connector includes a hinge, a return spring, and an intermediate connector made of a unidirectional shape memory alloy;

[0075] The adjacent sides of two adjacent mounting substrates are rotatably connected by hinges, and the intermediate connector is also fixedly connected to the adjacent sides of two adjacent mounting substrates. The reset spring is fitted on the intermediate connector. When the intermediate connector is heated to the phase change temperature, it changes into a bent shape and causes the multiple mounting substrates to close into a claw-shaped structure. When the intermediate connector cools down below the phase change temperature, the multiple mounting substrates unfold into a flat plate shape under the action of the reset spring.

[0076] Shape memory alloy (SMA) is a material that changes its shape to a memory shape when it reaches its phase transition temperature.

[0077] In this technical solution, each intermediate connector can be heated by electricity or by heating the water in which each intermediate connector is located, so that the intermediate connector reaches the phase change temperature and completes its deformation, allowing the receiving coil to be clamped onto the transmitting coil, thus enabling wireless charging.

[0078] Because the intermediate connector made of unidirectional shape memory alloy is easier to control and more reliable in operation, it can ensure reliable release during clamping and charging.

[0079] like Figure 11 The sixth embodiment is shown below:

[0080] The difference between this embodiment and the sixth embodiment is that:

[0081] The controllable connector includes waterproof servo motors, the number of which is equal to the number of transmitting coils;

[0082] Each waterproof servo motor has a mounting block fixedly installed on its outer side, perpendicular to the axis of the rotating shaft. The mounting block is used to connect to another waterproof servo motor.

[0083] Each waterproof servo motor has a U-shaped mounting plate fixedly connected to its shaft. The open end of the U-shaped mounting plate is fixedly connected to the shaft, and the closed end of the U-shaped mounting plate is used for fixed connection with the mounting block of another waterproof servo motor.

[0084] One side of the U-shaped mounting plate in the thickness direction is fixedly connected to a mounting bracket for fixing a single mounting base plate.

[0085] In summary, by adopting the above mechanism, the waterproof servo motor can be controlled to control all mounting base plates to achieve the action of unfolding or retracting, thereby smoothly realizing the charging or unfolding and releasing of the clamp.

[0086] The above are merely preferred embodiments of the present invention. It should be noted that any modifications and improvements made by those skilled in the art without departing from the present technical solution should also be considered to fall within the scope of protection claimed in this claim.

Claims

1. An underwater wireless charging method, comprising the step of using an underwater wireless charging energy pickup device, wherein the underwater wireless charging energy pickup device achieves wireless charging through a transmitting coil and a receiving coil magnetically coupled together; characterized in that: It also includes a coil processing step: processing the transmitting coil into at least one pair of adjacent and independent transmitting coils, wherein the magnetic field directions generated by the two transmitting coils in each pair of adjacent and independent transmitting coils intersect; processing the receiving coil into at least one pair of adjacent and independent receiving coils, wherein the magnetic field directions generated by the two receiving coils in each pair of adjacent and independent receiving coils intersect, such that adjacent transmitting coils and adjacent receiving coils are mutually decoupled; The transmitting coil is disposed on at least two consecutive surfaces in the same circumferential direction of the rectangular structure, and the transmitting coil is disposed on four to six surfaces of the rectangular structure; the receiving coil is disposed in a one-to-one correspondence with the transmitting coil, and the receiving coils are connected in parallel. Each receiving coil is fixedly mounted on a mounting base made of a non-ferromagnetic and rigid material, the mounting base being made of aluminum alloy; adjacent mounting bases are fixedly connected by a fixing connector made of stainless steel or aluminum alloy, and all mounting bases together form a ring-shaped structure, the hollowed-out part in the middle of the ring-shaped structure being used for the lateral insertion of the rectangular structure containing the transmitting coil. The receiving coils together clamp and wrap around the transmitting coil in the same circumferential direction of the rectangular structure to achieve coupling connection; during wireless charging, after the underwater equipment sails into the charging dock and completes positioning, it extends out of the collar-shaped structure, and then the rectangular structure where the transmitting coil is located is laterally inserted into the hollow part in the middle of the collar-shaped structure for wireless charging; When the transmitting coil and the receiving coil are misaligned, each receiving coil is magnetically coupled to the transmitting coil that is now facing the misaligned coil, thus maintaining normal charging of the system.

2. The underwater wireless charging method according to claim 1, characterized in that: The transmitting coils are connected in series or in parallel.

3. The underwater wireless charging method according to claim 1 or 2, characterized in that: Each of the aforementioned transmitting and receiving coils is a flat coil module.

4. The underwater wireless charging method according to claim 1, characterized in that: The rectangular structure is a hollow structure.

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