The rapid development of embodied intelligence has led humanoid robots to move out of the laboratory and be deployed in various real-world scenarios such as factory inspection, security duty, commercial services, and training demonstrations. However, battery life and autonomous charging have always been major bottlenecks for the large-scale implementation of humanoid robots. Due to the limited internal space and weight of the robot bodies, the battery capacity of humanoid robots typically ranges from 0.8 to 2.3 kWh. Maintaining the joint posture requires a power consumption of 200 to 300W, and the actual dynamic operation battery life is generally only 2 to 4 hours, requiring frequent charging. The traditional manual charging methods of plugging and unplugging or the metal contact connection mode heavily rely on human intervention, with high interface wear and difficulty in alignment, making it difficult to achieve 7×24-hour unmanned operation. WirelessPT, leveraging its decade-long accumulation of industrial magnetic resonance wireless charging technology, has launched a lightweight wireless charging module specifically for humanoid robots, covering power ranges of 240W to 1200W, addressing industry pain points such as difficult charging position alignment, prone interface damage, and the need for manual intervention. This helps complete the energy shortfall for humanoid robots to truly operate autonomously.

The current three major practical challenges in traditional charging for humanoid robots are:

1. Strict alignment tolerance requirements: Humanoid robots rely on visual SLAM navigation to return to the charging position, which is affected by ground slippage, inertia, and navigation errors, resulting in frequent position deviations. The metal contact charging requires extremely high position accuracy, and even a slight deviation causes charging failure, requiring manual adjustment of the robot's posture to break the closed-loop operation.

2. Severe physical interface wear: Frequent plugging and unplugging, as well as impact during connection, cause mechanical damage to the charging interface; dust, water, and oil from the workshop infiltrate the connectors, leading to poor contact, short circuits, and frequent interface failures. The interface is a high-frequency loss component, with high maintenance and replacement costs.

3. Unable to perform fragmented autonomous charging: Charging must be done manually by plugging the gun or precisely aligning the charging base, and the robot cannot perform self-charging during task breaks; when the battery is completely depleted, the robot stops and "falls over," interrupting inspection and duty tasks, severely affecting the continuity of on-site operations.

WirelessPT's humanoid robot wireless charging module offers standardized lightweight solutions of 300W, 600W, and 1200W, suitable for industrial inspection humanoid robots and commercial service humanoid robots. The receiving end is designed for thinness, suitable for the narrow internal space of humanoid robots; with a full-load vertical working distance of 0 to 50mm, the X-axis allows a maximum ±20mm and Y-axis ±10mm horizontal offset, ensuring stable charging even with reasonable navigation errors. The full-load transmission efficiency is ≥85%, supporting constant current and constant voltage intelligent charging management, and featuring comprehensive hardware protection against overcurrent, overvoltage, and overtemperature. The transmitter and receiver are IP67 fully sealed, operating in a temperature range of 40℃ to +60℃, and can work stably in factory oil contamination and outdoor dust environments. It supports proximity charging, CAN/485 command startup, allowing the robot to navigate autonomously to the charging base when low on power, stop without precise calibration, and automatically start wireless charging when fully charged, completing the autonomous charging return process. The system is equipped with 2.4G radio frequency bidirectional communication, with real-time upload of charging voltage, current, temperature, and fault codes to the robot's main control platform; automatic load reduction protection in case of over-temperature or abnormal offset, complete fault code output, facilitating overall status monitoring and abnormal handling. The hardware supports front-end integrated installation and also supports retrofitting of existing sample machines; the parameters of the metal shielding area are standardized to avoid interference from the robot's metal structure to the magnetic field. The equipment has an average fault-free operation of 50,000 hours and a one-year warranty for the entire machine.

At present, the humanoid robot industry is in a critical stage transitioning from prototype demonstrations to large-scale implementation. Autonomous charging is not an additional feature but a necessary infrastructure for realizing productivity on a large scale. Unlike consumer-grade wireless charging, WIRELESSPT adheres to industrial standards. It designs all aspects, including power, offset tolerance, protection level, communication protocol, and fault protection, based on real industrial scenarios. It is compatible with various types of embodied intelligent equipment such as inspection humanoid robots, service humanoid robots, and quadruped composite robots.

In the future, WIRELESSPT will continuously iterate on the dedicated wireless charging solution for thin and large-offset humanoid robots, expand to higher power versions, and help embodied intelligent equipment break free from the constraints of manual charging, truly achieving unmanned operation and continuous operation around the clock.