Underwater contactless electrical connection device

Abstract

The utility model discloses an underwater non-contact electric connection device. Electric connection device includes: active component and passive component, active component includes first pressure shell, first needle seat and electromagnetic transducer, and electromagnetic transducer sets up in first pressure shell, and first needle seat is inserted in first pressure shell, and with electromagnetic transducer electric connection, passive component includes second pressure shell, second needle seat and magnetoelectric transducer, and magnetoelectric transducer sets up in second pressure shell, and second needle seat is inserted in second pressure shell, and with magnetoelectric transducer electric connection, active component and passive component are opposite and set up, and the magnetic signal emission direction of electromagnetic transducer and the magnetic signal receiving direction of magnetoelectric transducer are directly opposite, so that electromagnetic transducer and magnetoelectric transducer non-contact power on. The technical scheme of the application can effectively solve the problem that the underwater cannot be plugged in and out with electricity, the operation difficulty is big, is easy to short circuit, is easy to corrosion, improves the security, reduces the maintenance cost, prolongs the life.

Description

Technical Field

[0001] This utility model relates to the field of underwater connection and communication technology, specifically to an underwater contactless electrical connection device. Background Technology

[0002] In fields such as marine resource exploration, underwater robotic operations, and the construction of seabed observation networks, a stable power supply for underwater equipment is crucial for ensuring operational continuity. Traditional underwater power supply relies heavily on watertight contact connectors, requiring direct cable connection for energy transmission. However, this method cannot achieve live plugging and unplugging underwater. Operations require interrupting the existing power and communication links, and the difficulty and time-consuming process due to underwater currents and low visibility significantly hinders construction efficiency. Secondly, the metal contacts of traditional contact connectors are prone to short circuits underwater due to seawater conductivity, which can easily cause short circuits during live operations. This can result in equipment burnout or even electric shock to personnel, especially in high-risk scenarios such as leaky compartments, where short circuits can trigger cascading failures. Furthermore, traditional connection methods have short lifespans and high maintenance costs. Metal contacts, constantly immersed in seawater, are susceptible to electrochemical corrosion due to salinity and microorganisms, requiring frequent contact replacements. Each maintenance operation not only necessitates equipment recovery to land, costing thousands of yuan, but also disrupts operations. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an underwater contactless electrical connection device that effectively solves the problems of not being able to plug and unplug underwater while energized, high operational difficulty, susceptibility to short circuits, and susceptibility to corrosion, thereby improving safety, reducing maintenance costs, and extending service life.

[0004] This application provides an underwater contactless electrical connection device, the electrical connection device comprising:

[0005] An active component, the active component including a first pressure-resistant housing, a first pin holder and an electromagnetic transducer, the electromagnetic transducer being disposed inside the first pressure-resistant housing, the first pin holder being inserted into the first pressure-resistant housing and electrically connected to the electromagnetic transducer inside the first pressure-resistant housing;

[0006] A passive component, comprising a second pressure-resistant housing, a second pin holder, and a magnetoelectric transducer, wherein the magnetoelectric transducer is disposed within the second pressure-resistant housing, and the second pin holder is inserted into the second pressure-resistant housing and electrically connected to the magnetoelectric transducer within the second pressure-resistant housing;

[0007] The active component and the passive component are arranged opposite to each other, and the magnetic signal transmission direction of the electromagnetic transducer and the magnetic signal receiving direction of the magnetoelectric transducer are aligned, so that the electromagnetic transducer and the magnetoelectric transducer can be energized without contact.

[0008] In one aspect, the active component further includes a first wireless communication module disposed within the first pressure-resistant housing, and the first wireless communication module is electrically connected to the first pin socket.

[0009] The passive component further includes a second wireless communication module, which is disposed inside the second pressure-resistant housing. The second wireless communication module is electrically connected to the second pin socket, and the first wireless communication module and the second wireless communication module are wirelessly connected.

[0010] In one aspect, the active component further includes an input soft-start protection module and a resonance module, the input soft-start protection module and the resonance module being disposed within the first pressure-resistant housing, the input soft-start protection module being electrically connected to the first pin socket, and the resonance module being connected to both the input soft-start protection module and the electromagnetic transducer, the input soft-start protection module being used to suppress power surges, the resonance module being used to convert the electrical energy provided by the input soft-start protection module into electromagnetic resonance energy, and the electromagnetic transducer being used to convert the electromagnetic resonance energy provided by the resonance module into electromagnetic energy.

[0011] In one aspect, the active component further includes a first step-down module and a drive module, the first step-down module and the drive module being disposed within the first pressure-resistant housing, the first step-down module being electrically connected to the first pin header and the drive module, the drive module being connected to the resonant module, and the first step-down module being used to supply power to the drive module to drive the resonant module to operate.

[0012] In one aspect, the active component further includes a first communication conversion module, which is electrically connected to the first pin socket and the first wireless communication module, respectively. The step-down module is electrically connected to the first communication conversion module and the first wireless communication module, respectively, and the step-down module is used to supply power to the first communication conversion module and the first wireless communication module.

[0013] In one aspect, the passive component further includes an output soft-start protection module disposed within the second pressure-resistant housing. The output soft-start protection module is electrically connected to the second pin socket and the magnetoelectric transducer, respectively, and is used to suppress power surges.

[0014] In one aspect, the passive component further includes a bridge rectifier isolation module, a second step-down module, and a second communication conversion module. The bridge rectifier isolation module, the second step-down module, and the second communication conversion module are disposed within the second pressure-resistant housing. The bridge rectifier isolation module is electrically connected to the magnetoelectric transducer and the second step-down module. The second step-down module is electrically connected to the second communication conversion module and the second wireless communication module. The bridge rectifier isolation module is used to convert AC power to DC power, and the second step-down module is used to supply power.

[0015] In one aspect, the electrical connection device further includes a clamping member and a snap fastener, the clamping member being disposed on the outer wall surface of one of the first pressure-resistant housing and the second pressure-resistant housing, the snap fastener being disposed on the outer wall surface of the remaining pressure-resistant housing, and the clamping member engaging with the snap fastener.

[0016] In one aspect, the clamping member includes a first clamping part and a second clamping part, the first clamping part and the second clamping part being rotatably disposed on both sides of the first pressure-resistant housing, and the buckle being disposed on the outer wall surface of the second pressure-resistant housing;

[0017] The clamping member further includes a first handle, a second handle, and an elastic part. The first handle is disposed at the end of the first clamping part away from the buckle, the second handle is disposed at the end of the second clamping part away from the buckle, and the elastic part is connected to the first handle and the second handle.

[0018] In one aspect, both the first pressure-resistant housing and the second pressure-resistant housing are made of thermally conductive metal.

[0019] The beneficial effects of this invention are reflected in the following aspects: By implementing a contactless design for both active and passive components, the practicality and reliability of underwater power supply and communication connections are improved. Firstly, relying on electromagnetic resonance coupling and wireless communication to achieve contactless energy transmission reduces the connector's dependence on metal contacts, enabling live underwater plugging and unplugging without interrupting the link. This avoids the risks of short circuits and electric shocks caused by exposed contacts. Secondly, the module components are encapsulated in a pressure-resistant housing, eliminating contact exposure and corrosion problems, extending service life, and reducing maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1This is a functional structural diagram of the underwater contactless electrical connection device of this application;

[0022] Figure 2 This is a functional structural diagram of the active component in the underwater contactless electrical connection device of this application;

[0023] Figure 3 This is a functional structural diagram of the passive component in the underwater contactless electrical connection device of this application;

[0024] Figure 4 This is a schematic diagram of the underwater contactless electrical connection device of this application;

[0025] Figure 5 This is a schematic diagram of the underwater contactless electrical connection device of this application, showing the separation of active and passive components;

[0026] Figure 6 This is a schematic diagram of the structure of the clamping component of the active component in the underwater contactless electrical connection device of this application. Detailed Implementation

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0028] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0029] like Figures 1-3 As shown, this application provides an electrical connection device with positive behavior, the electrical connection device including: an active component and a passive component.

[0030] The active component includes a first pressure-resistant housing, a first pin socket, and an electromagnetic transducer. The electromagnetic transducer is housed within the first pressure-resistant housing, and the first pin socket is inserted into the first pressure-resistant housing and electrically connected to the electromagnetic transducer within the first pressure-resistant housing. The first pressure-resistant housing serves as a protective carrier, generally meeting the pressure resistance requirements of underwater high-pressure environments, while also providing a waterproof and corrosion-resistant sealed space for internal components to prevent seawater intrusion from affecting circuit performance. As an energy conversion component, the electromagnetic transducer, housed within the first pressure-resistant housing, is protected from physical damage caused by the complex underwater environment, ensuring the stability of magnetic signal transmission. The first pin socket serves as the interface for external energy and signals, forming a watertight connection with the first pressure-resistant housing through insertion, and directly establishing an electrical connection with the electromagnetic transducer within the first pressure-resistant housing, ensuring that externally input electrical energy can be efficiently transferred to the electromagnetic transducer.

[0031] The passive component includes a second pressure-resistant housing, a second pin socket, and a magnetoelectric transducer. The magnetoelectric transducer is housed within the second pressure-resistant housing, and the second pin socket is inserted into the second pressure-resistant housing and electrically connected to the magnetoelectric transducer within the second pressure-resistant housing. The second pressure-resistant housing functions identically to the first pressure-resistant housing, providing a stable operating environment for the internal magnetoelectric transducer, ensuring that the housing does not deform or leak under the high pressure of the deep sea, and preventing internal components from failing due to seawater intrusion or pressure damage. The magnetoelectric transducer, as an energy receiving component, is built into the second pressure-resistant housing and converts it into electrical energy, while protecting the transducer from underwater environmental interference and ensuring energy conversion efficiency. The second pin socket, as a connection interface for the external load, is connected to the second pressure-resistant housing via a watertight insertion method and electrically connected to the magnetoelectric transducer inside the housing, enabling the stable transfer of the electrical energy converted by the magnetoelectric transducer to the external load.

[0032] The active and passive components are positioned opposite each other, with the electromagnetic transducer's magnetic signal transmission direction and the magnetoelectric transducer's magnetic signal reception direction aligned to ensure contactless energization. This alignment ensures the magnetic signal transmission and reception paths are linearly aligned, minimizing energy loss during transmission and guaranteeing energy transfer efficiency meets design requirements. It also enhances the device's resistance to misalignment; even with slight radial deviations in underwater components, stable energy transmission can be maintained through aligned magnetic signal directions, preventing power outages or efficiency drops due to poor magnetic coupling. This design is suitable for applications in complex underwater environments where component attitude is easily affected by water flow.

[0033] In this embodiment, the practicality and reliability of underwater power supply and communication connections are improved by employing a contactless design for both active and passive components. On one hand, contactless energy transmission is achieved through electromagnetic resonant coupling and wireless communication, reducing the connector's reliance on metal contacts and enabling hot-plugging underwater without interrupting the link. This avoids the risks of short circuits and electric shocks caused by exposed contacts. On the other hand, the module components are encapsulated in a pressure-resistant housing, eliminating contact exposure and corrosion issues, extending service life, and reducing maintenance costs.

[0034] This application

[0035] Furthermore, the active component also includes a first wireless communication module, which is disposed within the first pressure-resistant housing and electrically connected to the first pin socket. The passive component also includes a second wireless communication module, which is disposed within the second pressure-resistant housing and electrically connected to the second pin socket. The first and second wireless communication modules are wirelessly connected. By adding a first wireless communication module electrically connected to the first pin socket within the first pressure-resistant housing of the active component, and adding a second wireless communication module electrically connected to the second pin socket within the second pressure-resistant housing of the passive component, and enabling the two wireless communication modules to wirelessly communicate, contactless communication is achieved. This eliminates the need for additional communication cables, reducing the problems associated with separate power and communication interfaces for underwater equipment, complex wiring, and susceptibility to functional failure due to cable damage.

[0036] In addition, the first wireless communication module acquires external input communication signals through the first connector, and the second wireless communication module achieves communication interaction with the external load through the second connector. The wireless connection between the two can avoid the sealing failure and wear problems of contact communication interfaces in underwater high-pressure and corrosive environments, thus improving communication stability and service life. The wireless communication module is built into a pressure-resistant housing, which can avoid interference and damage to the communication module from underwater currents and impurities by the waterproof and corrosion-resistant protection of the housing. This ensures stable data transmission even in complex underwater environments, such as the transmission of control commands and status feedback signals under the RS485 protocol, further expanding the applicability of the device in underwater security networking, detector mounting and other scenarios.

[0037] Furthermore, the active component also includes an input soft-start protection module and a resonance module. The input soft-start protection module and the resonance module are disposed within the first pressure-resistant housing. The input soft-start protection module is electrically connected to the first pin socket. The resonance module is connected to both the input soft-start protection module and the electromagnetic transducer. The input soft-start protection module is used to suppress power surges. The resonance module is used to convert the electrical energy provided by the input soft-start protection module into electromagnetic resonance energy. The electromagnetic transducer is used to convert the electromagnetic resonance energy provided by the resonance module into electromagnetic energy.

[0038] In this embodiment, by adding an input soft-start protection module and a resonance module within the first pressure-resistant housing of the active component, and electrically connecting the input soft-start protection module to the first pin socket, surge currents (i.e., inrush currents) can be effectively suppressed during startup or external power fluctuations, preventing instantaneous excessive current impacts and ensuring the safety and stability of the power supply link. The resonance module improves energy conversion efficiency through the resonance principle, achieving a performance target of no less than 85% power supply efficiency when outputting 1000W. Furthermore, the electromagnetic transducer further converts electromagnetic resonance energy into wirelessly transmittable electromagnetic energy, forming a synergistic relationship with the resonance module for energy conversion and transmission adaptation. This ensures stable energy output in a form suitable for underwater contactless scenarios. Combined with the protective function of the input soft-start protection module, the entire active component achieves efficient energy conversion while possessing the dual capabilities of coping with power fluctuations and component protection, further enhancing the reliability of the device in underwater high-pressure and complex power environment scenarios.

[0039] In one embodiment of this application, the active component further includes a first step-down module and a drive module. The first step-down module and the drive module are disposed within a first pressure-resistant housing. The first step-down module is electrically connected to a first pin socket and the drive module. The drive module is connected to the resonant module. The first step-down module supplies power to the drive module to drive the resonant module to operate. By adding a first step-down module and a drive module within the first pressure-resistant housing of the active component, support is provided for the stable operation of the resonant module. The first step-down module is electrically connected to the first pin socket, which can convert externally input high-voltage electrical energy into low-voltage electrical energy suitable for the drive module, such as converting 300V to 12V, avoiding the problem of the drive module being damaged due to excessively high voltage or failing to start normally due to excessively low voltage.

[0040] In addition, the drive module receives the stepped-down power and connects to the resonant module, providing a stable drive signal to ensure that the resonant module can accurately maintain the preset resonant frequency, such as tens of kHz. This avoids the problem of the resonant module shifting its resonant point and reducing its energy conversion efficiency due to insufficient drive or unstable signal, and further ensures the energy transmission efficiency of the resonant module and the electromagnetic transducer link.

[0041] In the above embodiments, the active component further includes a first communication conversion module, which is electrically connected to the first pin socket and the first wireless communication module, respectively. The step-down module is electrically connected to the first communication conversion module and the first wireless communication module, respectively, and the step-down module is used to supply power to the first communication conversion module and the first wireless communication module.

[0042] By adding a first communication conversion module within the first pressure-resistant housing of the active component, and simultaneously relying on a step-down module to power both the first communication conversion module and the first wireless communication module, the system achieves precise signal format conversion. For example, it converts external wired signals connected to the first pin header into signals recognizable by the first wireless communication module, such as converting RS485 level signals into UART level signals, or conversely, converting signals received by the wireless communication module into wired signals for feedback to external devices. Secondly, the step-down module powers both the first communication conversion module and the first wireless communication module, converting externally input high-voltage power into low-voltage power compatible with both modules. This avoids damage to the communication modules from direct high-voltage power supply and ensures stable voltage support for the modules, preventing communication packet loss and data errors caused by unstable power supply.

[0043] In one embodiment of this application, the passive component further includes an output soft-start protection module. The output soft-start protection module is disposed within the second pressure-resistant housing and is electrically connected to the second pin socket and the magnetoelectric transducer. The output soft-start protection module is used to suppress power surges. In this embodiment of the application, by adding an output soft-start protection module within the second pressure-resistant housing of the passive component, protection is provided for the energy output end of the passive component. The output soft-start protection module is electrically connected to the magnetoelectric transducer and the second pin socket. After the magnetoelectric transducer converts the received electromagnetic energy into electrical energy, it effectively suppresses power surges during the power transmission process, preventing instantaneous excessive current or voltage from being directly transmitted to the external load through the second pin socket, preventing damage to the load due to power surges, and ensuring the electrical safety of downstream equipment.

[0044] The output soft-start protection module and the input soft-start protection module of the active component form a two-way protection closed loop from input to output. This not only avoids the impact of external power fluctuations on the active side components, but also prevents the impact of passive side energy output fluctuations on the load, further improving the safety and stability of the entire device's contactless power supply.

[0045] Furthermore, the passive component also includes a bridge rectifier isolation module, a second step-down module, and a second communication conversion module. The bridge rectifier isolation module, the second step-down module, and the second communication conversion module are disposed within the second pressure-resistant housing. The bridge rectifier isolation module is electrically connected to the magnetoelectric transducer and the second step-down module. The second step-down module is electrically connected to the second communication conversion module and the second wireless communication module. The bridge rectifier isolation module is used to convert AC power to DC power, and the second step-down module is used for power supply.

[0046] The bridge rectifier isolation module rectifies the AC power converted by the magnetoelectric transducer into DC power, adapting it to the DC power supply requirements of the second step-down module and some loads. Simultaneously, through electrical isolation, it prevents circuit faults on the active component side from propagating to passive components and external loads, avoiding the expansion of the fault range and improving power supply safety. The second step-down module converts the rectified DC power into low-voltage power, such as +3.3V, suitable for the second communication conversion module and the second wireless communication module. This avoids high-voltage damage to the communication modules and ensures a stable power supply.

[0047] The second communication conversion module acts as a relay hub for communication signals, enabling signal format conversion between the second wireless communication module and the second connector. For example, it can convert the UART level signal received by the wireless module into an RS485 level signal for transmission to an external load, or vice versa.

[0048] like Figure 4 Figure 6 As shown, the electrical connection device also includes a clamping member and a snap fastener 210. The clamping member is disposed on the outer wall surface of one of the first pressure-resistant housing and the second pressure-resistant housing, and the snap fastener 210 is disposed on the outer wall surface of the remaining pressure-resistant housing. The clamping member and the snap fastener 210 engage and connect.

[0049] The engagement of the clamping component and the buckle 210 ensures reliable underwater positioning and docking of the active component 10 and the passive component 20, reducing the risk of relative position shift due to water flow impact or underwater operation deviation.

[0050] Firstly, the engaging design of the clamping component and the latch 210 enables rapid and precise docking and secure fixation of the active component 10 and the passive component 20, preventing misalignment and shaking of the components during underwater operations and ensuring that the electromagnetic transducer and the magnetoelectric transducer always maintain a magnetic signal alignment. Secondly, the reduced complexity of the insertion and removal mechanism simplifies the underwater docking operation process and lowers the precision requirements for operators or equipment. This is particularly beneficial in complex underwater environments such as deep water and low visibility, improving docking efficiency and success rate. Both the clamping component and the latch 210 are located on the outer wall of the pressure-resistant shell, without affecting the protective performance of the internal components. Furthermore, the structure itself can be made of corrosion-resistant and high-pressure-resistant materials, such as titanium alloy or PEEK material consistent with the shell, adapting to the requirements of deep-water environments and preventing component separation due to mechanical failure, further enhancing the reliability of the entire device during long-term underwater operation.

[0051] In one embodiment of this application, the clamping member includes a first clamping part 110 and a second clamping part 120, which are respectively rotatably disposed on both sides of the first pressure-resistant housing, and a buckle 210 is disposed on the outer wall surface of the second pressure-resistant housing; the clamping member also includes a first handle 111, a second handle 121 and an elastic part 130, the first handle 111 is disposed at the end of the first clamping part 110 away from the buckle 210, the second handle 121 is disposed at the end of the second clamping part 120 away from the buckle 210, and the elastic part 130 is connected to the first handle 111 and the second handle 121. The first clamping part 110 and the second clamping part 120 are rotatably mounted on both sides of the first pressure-resistant housing. The clamping angle can be adjusted by rotation to adapt to the position and shape of the buckle 210, ensuring symmetrical clamping force on the buckle 210 from both sides. This avoids uneven force and docking misalignment caused by clamping on one side, further ensuring the alignment of the electromagnetic transducer and the magnetoelectric transducer after the active component 10 and the passive component 20 are docked. The first handle 111 and the second handle 121 are respectively located at the ends of the two clamping parts away from the buckle 210, providing a clear force application point for underwater operation. The operator can control the opening and closing of the two clamping parts by pulling the handles, completing the engagement or disengagement without precise alignment, significantly reducing the docking difficulty in underwater low visibility and limited operating space scenarios.

[0052] In addition, the elastic part 130 is connected to the first handle 111 and the second handle 121 respectively. Based on its own elastic potential energy, it provides a continuous clamping force to the two clamping parts, ensuring that the clamping parts are not easily loosened due to water flow impact or device vibration after they are engaged with the buckle 210. At the same time, when separation is required, pulling the handle can overcome the elastic force and open the clamping parts.

[0053] In one embodiment of this application, both the first and second pressure-resistant housings are made of thermally conductive metal. The resonant module and drive module of the active component 10, and the bridge rectifier isolation module of the passive component 20, all generate heat. The thermally conductive metal housing can quickly transfer internal heat to the housing surface through thermal conduction, and then achieve efficient heat dissipation through direct contact with seawater. This prevents internal components from overheating due to heat accumulation, ensuring stable operation of the circuit module within the operating temperature range of -20℃ to 55℃, and preventing performance degradation or component damage caused by high temperatures. The thermally conductive metal material also has good pressure resistance, generally meeting the pressure resistance requirements of deep water, such as 300 meters. Of course, the thickness or material of the pressure-resistant housing can be customized according to the water depth. Furthermore, the selected thermally conductive metal usually has excellent resistance to seawater corrosion, which can prevent shell corrosion caused by long-term underwater immersion and extend the overall service life of the device.

[0054] In the electrical connection device of this application, the active component 10 includes a first filter capacitor, and the passive component 20 includes a second filter capacitor. An external hydrostatic pressure of approximately 3 MPa is generated. If the capacitor is directly exposed to deep water, on the one hand, the capacitor casing may deform or crack due to the inability to withstand the external high voltage, leading to electrolyte leakage or internal electrode short circuits; on the other hand, the high voltage may change key parameters such as the capacitor's dielectric constant and leakage current, resulting in a decrease in filtering effect and a shift in resonant frequency, thereby affecting the power supply efficiency and stability of the entire device. Therefore, an independent withstand voltage compensation mounting cavity is provided within the pressure-resistant casing to seal the capacitor within the independent cavity, and transformer oil compensation balances the internal and external pressures.

[0055] Transformer oil is significantly affected by temperature, with a coefficient of thermal expansion and contraction of approximately 0.07%. Changes in the oil temperature within the sealed casing due to environmental variations or internal circuitry will cause thermal expansion and contraction of the oil. The ratio of oil volume to internal cavity space should not exceed 85%.

[0056] In addition, transducer caps are installed on the contact surfaces of the active and passive components, and these caps are sealed to the housing to reduce seawater corrosion of the transducers. Furthermore, the contact surfaces of the active and passive components can be positioned in contact or spaced apart. Contact placement results in higher transduction efficiency; spaced placement reduces the precision requirements for docking and facilitates easier connection.

[0057] It should be noted that the technical solution of this application does not require power interruption during connection. After alignment, the connection can be completed quickly by clamping the clamps, and separation can be achieved by pulling the handle, greatly shortening the operation time. It does not rely on complex equipment, and the existing power supply or communication process does not need to be interrupted during construction, making it suitable for underwater networking, detector mounting, and other scenarios.

[0058] Furthermore, there is no risk of short circuits or electric shock underwater. Energy is transmitted via magnetic signals and wirelessly, without any physical electrical or communication contacts, so seawater cannot form a conductive path; this also avoids accidental electric shock to operators.

[0059] In addition, key components are enclosed in a pressure-resistant housing, which isolates them from seawater, eliminating exposed metal contacts and preventing corrosion from seawater. This increases the stability of critical components or modules, reduces maintenance costs, and extends service life.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model 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 or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An underwater contactless electrical connection device, characterized in that, The electrical connection device includes: An active component, the active component including a first pressure-resistant housing, a first pin holder and an electromagnetic transducer, the electromagnetic transducer being disposed inside the first pressure-resistant housing, the first pin holder being inserted into the first pressure-resistant housing and electrically connected to the electromagnetic transducer inside the first pressure-resistant housing; A passive component, comprising a second pressure-resistant housing, a second pin holder, and a magnetoelectric transducer, wherein the magnetoelectric transducer is disposed within the second pressure-resistant housing, and the second pin holder is inserted into the second pressure-resistant housing and electrically connected to the magnetoelectric transducer within the second pressure-resistant housing; The active component and the passive component are arranged opposite to each other, and the magnetic signal transmission direction of the electromagnetic transducer and the magnetic signal reception direction of the magnetoelectric transducer are aligned, so that the electromagnetic transducer and the magnetoelectric transducer are energized without contact.

2. The electrical connection device according to claim 1, characterized in that, The active component further includes a first wireless communication module, which is disposed inside the first pressure-resistant housing and is electrically connected to the first pin socket. The passive component further includes a second wireless communication module, which is disposed inside the second pressure-resistant housing. The second wireless communication module is electrically connected to the second pin socket, and the first wireless communication module and the second wireless communication module are wirelessly connected.

3. The electrical connection device according to claim 2, characterized in that, The active component further includes an input soft-start protection module and a resonance module. The input soft-start protection module and the resonance module are disposed within the first pressure-resistant housing. The input soft-start protection module is electrically connected to the first pin socket. The resonance module is connected to both the input soft-start protection module and the electromagnetic transducer. The input soft-start protection module is used to suppress power surges. The resonance module is used to convert the electrical energy provided by the input soft-start protection module into electromagnetic resonance energy. The electromagnetic transducer is used to convert the electromagnetic resonance energy provided by the resonance module into electromagnetic energy.

4. The electrical connection device according to claim 3, characterized in that, The active component further includes a first step-down module and a drive module. The first step-down module and the drive module are disposed inside the first pressure-resistant housing. The first step-down module is electrically connected to the first pin socket and the drive module. The drive module is connected to the resonant module. The first step-down module is used to supply power to the drive module to drive the resonant module to operate.

5. The electrical connection device according to claim 4, characterized in that, The active component further includes a first communication conversion module, which is electrically connected to the first pin socket and the first wireless communication module respectively. The step-down module is electrically connected to the first communication conversion module and the first wireless communication module respectively, and the step-down module is used to supply power to the first communication conversion module and the first wireless communication module.

6. The electrical connection device according to claim 5, characterized in that, The passive component also includes an output soft-start protection module, which is disposed in the second pressure-resistant housing. The output soft-start protection module is electrically connected to the second pin socket and the magnetoelectric transducer, and is used to suppress power surges.

7. The electrical connection device according to claim 6, characterized in that, The passive component further includes a bridge rectifier isolation module, a second step-down module, and a second communication conversion module. The bridge rectifier isolation module, the second step-down module, and the second communication conversion module are disposed within the second pressure-resistant housing. The bridge rectifier isolation module is electrically connected to the magnetoelectric transducer and the second step-down module. The second step-down module is electrically connected to the second communication conversion module and the second wireless communication module. The bridge rectifier isolation module is used to convert AC power to DC power, and the second step-down module is used to supply power.

8. The electrical connection device according to any one of claims 1 to 7, characterized in that, The electrical connection device further includes a clamping member and a snap fastener. The clamping member is disposed on the outer wall surface of one of the first pressure-resistant housing and the second pressure-resistant housing, and the snap fastener is disposed on the outer wall surface of the remaining pressure-resistant housing. The clamping member and the snap fastener engage and connect.

9. The electrical connection device according to claim 8, characterized in that, The clamping member includes a first clamping part and a second clamping part, the first clamping part and the second clamping part are respectively rotatably disposed on both sides of the first pressure-resistant housing, and the buckle is disposed on the outer wall surface of the second pressure-resistant housing; The clamping member further includes a first handle, a second handle, and an elastic part. The first handle is disposed at the end of the first clamping part away from the buckle, the second handle is disposed at the end of the second clamping part away from the buckle, and the elastic part is connected to the first handle and the second handle.

10. The electrical connection device according to claim 8, characterized in that, Both the first pressure-resistant housing and the second pressure-resistant housing are made of thermally conductive metal.

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