The sparks, wear and tear, and efficiency bottlenecks of traditional charging methods are becoming a thing of the past in the innovation of wireless charging technology.

Today, with the rapid development of smart logistics and intelligent manufacturing, a high-power wireless fast charging technology of over 200 amperes has been commercialized, bringing unprecedented "wireless freedom" to the industrial field.

Magnetic resonance wireless charging technology, with its characteristics of no need for precise alignment, high-efficiency transmission and adaptability to harsh environments, is becoming a key solution to the battery life pain point of industrial mobile robots.

01 Industry Pain Point: The limitations of traditional charging

Driven by Industry 4.0 and intelligent manufacturing, the market for industrial mobile robots has witnessed explosive growth. According to statistics, the sales scale of industrial mobile robot enterprises in China reached nearly 20 billion yuan in 2022, an increase of four times compared with 2017.

However, the traditional plug-in mechanical contact charging method has many hidden dangers.

Especially in the field of mobile handling robots, traditional methods have drawbacks such as the risk of metal short circuits, limited mechanical life, errors in precise alignment, and the need for manual operation.

In complex industrial scenarios such as petroleum, chemical engineering, and power, sparks from charging contacts can lead to serious safety accidents, while damp and dusty environments can accelerate contact aging and poor contact.

In addition, the traditional charging method requires robots to interrupt their work for charging, resulting in a decline in work efficiency and an increase in operating costs. For modern intelligent warehouses and production lines that pursue 24-hour uninterrupted operation, this kind of downtime caused by charging has become a major bottleneck.

02 Technological Breakthrough: The Principle of Magnetic Resonance Wireless Charging

Magnetic coupling resonant wireless charging technology achieves energy transmission through magnetic resonance between the transmitting end and the receiving end, solving many pain points of traditional charging methods.

This technology enables non-contact power supply, avoiding the wear and safety hazards of traditional plug-in interfaces.

The magnetic resonance wireless charging technology of WIRELESSPT features high transmission freedom. The transmitting end and the receiving end do not need to be precisely aligned. It has a wide transmission air gap distance and allows for significant offset in both horizontal and vertical directions.

After three years of unremitting efforts, over 1,000 experimental debugging and algorithm iterations, WIRELESSPT has successfully overcome technical challenges such as the design of high-precision wireless charging system control algorithms and high-power converters.

They have developed an industry-leading magnetic coupling resonant control system, achieving a wireless charging transmission efficiency of up to 93% for kilowatt-level industrial equipment, providing an innovative solution for safe and reliable power supply in industrial scenarios.

03 Application Scenarios: Multi-industry solutions

Magnetic resonance wireless charging technology has demonstrated its value and potential in multiple industries.

In the field of AGV/AMR applications, when the remaining battery power of the robot itself drops below the warning threshold, it can automatically plan a path to the nearest wireless charging station, achieve energy transmission through magnetic field resonance, eliminate manual intervention, and realize true 7× 24-hour automated operation.

In explosion-proof robot scenarios, the zero-spark feature of magnetic resonance wireless charging technology fundamentally eliminates safety hazards and is particularly suitable for dangerous environments such as petroleum, chemical, and mining industries.

For inspection robots, this technology offers all-weather operation and maintenance capabilities, allowing them to withstand low temperatures, humidity, and dusty environments, ensuring their continuous operation under various harsh conditions.

In addition, magnetic resonance wireless charging technology has demonstrated wide adaptability in various scenarios such as smart cages, unmanned aerial vehicles, unmanned ships, low-speed unmanned vehicles, quadruped robots, livestock robots, and photovoltaic cleaning robots.

WIRELESSPT has launched three series of wireless charging products: waterproof wireless charging, explosion-proof wireless charging, and AGV wireless charging, and has obtained over 100 patents in the field of wireless charging technology.

04 Core Advantage: Why Choose Magnetic Resonance Wireless Charging

Magnetic resonance wireless charging technology has multiple core advantages, making it irreplaceable in industrial environments.

One of its main features is efficient energy conversion, with a charging efficiency as high as 85% to 93%. It supports robots to operate continuously for 24 hours, significantly enhancing the production efficiency in intelligent logistics and warehousing as well as intelligent manufacturing scenarios.

It has extremely strong environmental adaptability, reaching an IP65 protection level, and can operate stably in low-temperature, humid or dusty environments, meeting the demands of complex scenarios such as infrastructure projects in Southeast Asia and intelligent manufacturing factories in Europe.

The safety and reliability have been significantly enhanced. Due to the absence of electrodes, it has particularly good weather resistance and can withstand various climate tests. Meanwhile, the equipment has no electric sparks, which can fundamentally eliminate potential safety hazards.

The flexible installation feature is also one of its major advantages. There is no need for a dedicated charging area, providing customers with a "install and use" solution.

It is worth mentioning that the space-saving feature enables enterprises not to set up charging areas on prime footprint, and every inch of the site can be used for core business.

05 Future Outlook: Trends in Wireless Charging

With the increasing popularity of industrial mobile robots, wireless charging technology is developing towards standardization, high power and intelligence.

In March 2025, the draft of the national standard "Technical Specification for Wireless Charging System of Industrial Mobile Robots" for public comment was issued. It is under the jurisdiction of the National Technical Committee for Robot Standardization and jointly drafted by Beijing Institute of Machinery Industry Automation Co., LTD., Midea Group Co., LTD., KUKA Robotics (Guangdong) Co., Ltd. and other units.

This standard will fill the industry gap and provide a unified technical specification and evaluation method for the wireless charging system of industrial mobile robots.

Industry leaders are actively developing the next-generation 10kW high-power fast charging products to meet the demands of robots with higher energy consumption.

Meanwhile, innovative models such as the deep integration of photovoltaic energy storage and wireless charging, as well as cloud-based collaborative operation and maintenance, are under exploration.

In addition, the application fields of wireless charging technology are constantly expanding, gradually moving from industrial robots to broader markets such as new energy vehicles and eVTOL (Electric Vertical Take-off and Landing Aircraft).

In the future, charging technology while in motion will further mature, providing "sustainable power" for various mobile devices.

Nowadays, WIRELESSPT's wireless charging products have been widely applied in industries such as petroleum, chemical engineering, power, logistics, and warehousing, and have reached cooperation with over two hundred domestic robot enterprises.

From AGV carts to inspection robots, from explosion-proof scenarios to smart cages, magnetic resonance wireless charging technology is quietly playing a key role in every corner, helping robots get rid of "charging anxiety" and truly achieve 24-hour uninterrupted operation.

With the in-depth advancement of Industry 4.0, this technology is bound to become an invisible pillar of intelligent manufacturing, supporting the efficient operation of future factories.