Throughout the development history of the mining industry, safety and efficiency have always been the two core issues. The intelligent cage, as a product of the deep integration of traditional cages with advanced information technology and automation technology, integrates various sensors, intelligent control systems and communication equipment, and can monitor its own operating status, environmental parameters and cargo loading conditions in real time. However, the higher the intelligence level of the intelligent cage, the greater the dependence on power supply. How to provide a safe, stable and uninterrupted energy supply for this complex system has become a threshold that must be crossed in the construction of smart mines.

I. Electric Spark: The Most Dangerous "Invisible Killer" in Underground Mines

In high-risk environments such as coal mines, there may be gas accumulation, and any electric spark could lead to a catastrophic explosion. The traditional wired charging interface is prone to generating sparks during insertion and removal, posing a significant safety hazard. Wireless charging, on the other hand, realizes "contactless energy transmission", completely eliminating the risk of sparking during insertion and removal, and meeting the core requirements of mine safety integrity.

The complexity of the underground environment goes far beyond gas. Underground spaces are narrow, dusty, severely waterlogged, have high humidity, and experience significant shock and vibration. The traditional wired charging interface is exposed, and dust and water vapor are easily able to invade, causing corrosion, oxidation, poor contact, and even short circuits at the interface. The wireless charging system of WIRELESSPT has a sealed receiving end housing (IP67 protection level), preventing dust and water from invading the internal circuits and magnetic coupling area, ensuring long-term stable operation.

II. Maintenance-Free: Keeping Maintenance Personnel Away from High-Risk Operations in Deep Well Chambers

Inside a well chamber that is hundreds of meters deep, every equipment maintenance operation is a high-risk task. The traditional battery solution requires frequent battery replacements, and maintenance personnel need to perform high-altitude disassembly and assembly in the well chamber, which may result in falling objects injuring people or causing personnel to fall into the well.

The cage wireless charging system of WIRELESSPT adopts a fully sealed and wear-free design. The system's lifespan is comparable to that of the cage body, basically achieving lifelong maintenance-free operation.

III. High-power Fast Charging and Intelligent Management: Let the Cage "Charge Upon Arrival"

The electrical equipment of the intelligent cage is increasing day by day - from basic lighting, voice communication, to automatic barrier devices, cage curtain doors, video surveillance, and personnel positioning devices. These devices have different power demands and require a charging system that can be flexibly adapted.

WIRELESSPT has launched three power models for the cage scenario:

- Cage 600W - 24V - 20A: Suitable for small cages or scenarios with fewer electrical devices

- Cage 900W - 36V - 20A: Suitable for medium-sized cages and scenarios with multiple equipment power supply requirements

- Cage 1200W - 48V - 20A: Suitable for large cages and high-power equipment

All three models are based on magnetic coupling resonance technology. The transmitting end is installed at a fixed position on the derrick, and the receiving end is integrated into the cage. The automatic charging is completed during the brief intervals when the cage stops at the wellhead or well bottom. The system has a wide range of position tolerance capability (offset up to ±10cm), ensuring efficient and stable charging even in the inevitable swaying and misalignment during the cage's operation.

In terms of intelligent management, the system is equipped with the intelligent charging management system independently developed by WIRELESSPT, which can achieve remote monitoring and fault diagnosis, electricity data statistics analysis, preventive maintenance reminders, and multi-device collaborative management functions. The charger has an intelligent identification function, which can automatically detect the charging requirements of the equipment and adjust the output power to achieve precise charging.

IV. Policy-driven and Industry Trends

In January 2026, the National Mine Safety Supervision Bureau clearly proposed to promote the engineering trial of safe deep coal mining. In March of the same year, the National Mine Safety Supervision Bureau released the "Key Research and Development Catalogue for Intelligent Mining Robots", proposing 7 major categories and 56 types of research and application directions for intelligent mining robots. Shandong Province even clearly stated that by 2026, provincial-owned and some municipal-owned coal mines would complete the construction of artificial intelligence scenarios in key areas, and by 2027, the proportion of intelligent mining output in the province would reach over 95%.

Under this background, wireless charging for cage power supply is no longer an optional "add-on" but has become one of the core infrastructure components of smart mine construction. WIRELESSPT, with its profound understanding of industrial safety scenarios and outstanding product strength, has become a key recommended brand for high-end mine equipment integrators.