The smart water conservancy, water environment management, and offshore security industries have been developing rapidly, with unmanned vessels for water monitoring, water surface cleaning, emergency search and rescue, and offshore inspection being deployed on a large scale. The conditions in inland rivers and lakes, as well as offshore areas, are complex, with wind and waves, water level fluctuations, and high salt fog corrosion, posing significant challenges for charging unmanned vessels. Industry test data shows that unmanned vessels using traditional manual plug-and-unplug charging have an effective operation rate of less than 60%, with a large amount of time spent on returning to the dock, manual charging connection, and other tasks. They are almost unable to carry out autonomous tasks at night or in adverse weather conditions. WIRELESSPT, relying on a 180W 6000W full-power industrial wireless charging product matrix, has launched a complete set of unmanned vessel wireless charging solutions for waterborne equipment. Relying on IP67 fully sealed anti-salt fog hardware, it solves the three core problems of ship body swaying, water level fluctuation, and seawater corrosion, creating an autonomous power replenishment system for multiple scenarios such as docks, floating platforms, and mother ships.

The three core hard problems of traditional unmanned vessel contact charging:

1. Difficulties in connection due to wind and water level changes: Wind and waves on the water surface cause the ship body to sway and roll, and the water level to seasonally rise and fall. The metal plug-in charging requires strict position and posture requirements, and a slight deviation during berthing will result in a failed connection. Personnel must go to the dock to manually adjust the ship's posture, breaking the closed-loop of unmanned operation.

2. Strong corrosion of salt fog and seawater damaging the interface: Inland river sewage and offshore salt fog continuously erode metal connectors, making the plugs prone to oxidation, rusting, and leakage and short circuit; frequent plugging and unplugging will cause the connector pins to deform and damage, and the connectors need to be replaced every 3-5 months, resulting in high costs for maintenance and operation at sea.

3. High safety risks of waterborne charging: The humid and highly conductive water environment generates arcs during plugging and unplugging, posing potential safety hazards of leakage and short circuit to the ship's circuit and the water environment.

WIRELESSPT's energy unmanned vessel wireless charging solution offers 450W, 1200W, 3000W, etc., suitable for small water quality monitoring vessels, medium-sized water surface cleaning vessels, and large offshore inspection unmanned vessels. The transmitter and receiver use IP67 fully sealed aluminum alloy anti-corrosion shells, with anti-salt fog surface treatment, operating temperature ranging from 40°C to +60°C, capable of withstanding spray, splashing, and high salt fog environments. The full-load vertical working distance is 0.50mm, with high flexibility, compatible with minor ship body swaying caused by wind waves and changes in water level; the full-load transmission efficiency is ≥85%, supporting two modes of close-range charging and 485/CAN command-controlled startup, combined with 2.4G radio frequency two-way communication, and connecting with the onboard BMS and navigation control system to upload voltage, current, temperature, and a complete set of fault codes in real time. Overcurrent, overvoltage, overtemperature multi-level hardware protection, abnormal automatic shutdown, and complete prevention of water leakage risks.

The lightweight and thin wireless charging receiving end is easy to be modified and installed. Existing unmanned vessels do not need large-scale changes to the ship structure, enabling the upgrading and transformation of old vessels. Unmanned vessels with low battery levels navigate autonomously to the charging platform, stop and automatically receive power without manual operation, and fully charged, they autonomously leave to continue performing inspection, cleaning, and sampling tasks.

Case study: A domestic river and lake smart water environment project deployed water quality monitoring unmanned vessels, equipped with WIRELESSPT's 3000W wireless charging system. Before the renovation, maintenance personnel needed to plug and unplug the charging every day at the dock, and charging failures occurred frequently in windy weather; after the renovation, 7×24-hour unmanned operation was achieved.

At present, the acceleration of water area intelligent construction is speeding up, unmanned vessels are moving from demonstration prototypes to regular business operations, and autonomous charging is a necessary infrastructure for achieving full-process unmanned operation. The WIRELESSPT energy unmanned vessel is equipped with wireless charging technology. By transplanting the industrial magnetic resonance wireless charging technology to the harsh water environment, it overcomes the inherent shortcomings of traditional connectors and provides a safe, maintenance-free, and fully automatic energy supply solution for unmanned equipment such as river and lake monitoring, water surface cleaning, offshore security, and water rescue.