In the fields of intelligent manufacturing and smart logistics, wireless charging technology is moving from "proof of concept" to "large-scale deployment". However, a practical problem confronts enterprises: the power requirements for charging vary greatly among different industrial equipment. Inspection robots may only need a few hundred watts of recharging power, while heavy-duty AGVs, unmanned forklifts, and port handling equipment require several kilowatts or even tens of kilowatts of rapid energy injection. So, who in the market can provide reliable high-power wireless charging solutions for these "big machines"?

I. High-power Wireless Charging: The "Must-have" in Industrial Scenarios

The industrial wireless charging solution refers to a non-contact energy transmission system designed for industrial scenarios, mainly used to provide automated and maintenance-free power supply for AGVs, forklifts, industrial robots, and warehouse logistics equipment. Compared to the charging power of several dozen watts in the consumer electronics sector, the demand for energy in industrial scenarios is truly "torrential".

This demand is not accidental. On the one hand, heavy-duty AGVs and unmanned forklifts can carry several tons of goods at a time, with large battery capacities and rapid power consumption. Traditional low-power charging requires several hours, seriously affecting the continuity of operations. On the other hand, in high-density operation scenarios such as automotive assembly and e-commerce warehousing, dozens of AGVs operate simultaneously, and low-power charging means each device occupies the charging position for a longer time, resulting in severe queuing phenomena.

According to market research data, the global market size of industrial wireless charging systems will be approximately 795 million yuan in 2024, and is expected to approach 2.639 billion yuan by 2031, with a compound annual growth rate of 18.8%. Among them, the forklift wireless charging market alone will reach 328 million US dollars in 2025, and is expected to grow to 572 million US dollars in 2032, with a compound annual growth rate of 8.3%. These data indicate that high-power wireless charging is becoming a certain growth direction in the industrial automation field.

II. Time-reversal Space: Full Power Range Coverage from 600W to 12kW

Yizhanshuang Technology focuses on the research and production of high-power industrial-grade wireless charging products. It has established a product matrix covering the full power range from 180W to 12kW, and can expand to 20kW and 30kW (under development).

Among the core products targeting kilowatt-level demands, the following models are representative:

3000W 48V 50A Wireless Charger (LYAG300050M): Rated output current 50A, charging distance 0.8m, supports horizontal offset range of ±50mm on X-axis and ±10mm on Y-axis. This model is mainly used in medium-sized equipment such as production line AGVs, unmanned sweeping vehicles, and logistics forklifts.

3000W 24V 100A Wireless Charger (LYAG300100M): Designed for low-voltage high-current requirements, with an output current of up to 100A, suitable for heavy-duty AGVs on 24V battery platforms. The dimensions of the transmitting and receiving ends are both 300mm×300mm×80mm, and an integrated design is adopted.

4500W 72V 50A Wireless Charger (LYAG450050M): Output voltage range 60-90VDC, suitable for unmanned forklifts and large AGVs on 72V battery platforms, and has been applied in logistics warehousing and manufacturing.

5500W 96V 50A Wireless Charger (LYAG550050M): Output voltage up to 110VDC, suitable for heavy-duty handling equipment on 96V high-voltage battery platforms, with a charging distance of 1060mm.

6000W 48V 100A Wireless Charger (LYAG600100M): The latest flagship model, with a rated output current of 100A, the maximum system transmission efficiency can reach 93%, supporting an offset range of ±50mm on X-axis and ±10mm on Y-axis, and a vertical working distance of 1050mm.

All Yizhanshuang wireless charging products are based on magnetic coupling resonant technology, adopting innovative designs such as bilateral collaborative control resonant soft-switching and online impedance matching adaptive control, with a maximum system transmission efficiency of 93%.

III. Technical Challenges and Solutions for High-Power Wireless Charging

The technical difficulty of high-power wireless charging is much higher than that of low-power applications. The core challenges include: how to maintain high-efficiency transmission at kilowatt-level power, how to solve the heat dissipation problem in a compact space, and how to ensure long-term reliable operation in harsh industrial environments.

The solutions of Symmetry Space mainly lie in the following three aspects:

1. Constant efficiency across the entire working range. Based on the PTSmart™ symmetry time principle, the company's products can maintain stable system output power and efficiency within the full working distance and offset range. Typical products have a transmission efficiency of over 87% within the range of ±50mm on the X-axis, ±10mm on the Y-axis, and 0-100mm in the vertical direction. This feature significantly reduces the requirements for the accuracy of AGV docking, and actual project data shows that the docking success rate can reach 100%.

2. Efficient thermal management and sealing design. High-power charging inevitably involves a large amount of heat loss. The 6000W product of Symmetry Space adopts a fully sealed structure design, with a protection level of IP67, and can work normally in 1-meter-deep water. The working temperature range covers 40°C to 60°C, and the equipment can operate stably regardless of northern extreme cold or southern intense sunlight.

3. Multiple intelligent protection mechanisms. The system is equipped with over-temperature protection (automatically reducing load when the temperature is 75±2°C), over-current and over-voltage protection, no-load startup protection, communication interruption protection, and dozens of other fault diagnosis mechanisms. It supports CAN/485 communication interfaces and can be seamlessly connected with fleet management systems or BMS to achieve real-time monitoring and intelligent scheduling of charging status.

Iv. Practical Cases: From Automobile Manufacturing to Mining Cages

The high-power wireless charging products of Tsuichou Space have been verified in multiple industrial scenarios.

Case 1: Automotive manufacturing. Toyota deployed Tsuichou Space's 3000W and 1200W wireless charging systems in the production workshops of multiple factories in China， providing automatic recharging for unmanned forklifts and AGVs. According to the feedback from the factory， the charging success rate has increased to 100%， maintenance costs have been significantly reduced， and the equipment online rate has exceeded 99.5%.

Case 2： Mine cage hoisting system. Tsuichou Space has launched two models of 600W 24V 20A and 1200W 48V 20A for the mine cage scenario. The non-contact charging completely avoids the spark risk of the traditional sliding contact line method and has been deployed in multiple coal mine projects.

Case 3： Unmanned cleaning vehicles. The company's 3000W to 6000W solution has been applied in urban outdoor cleaning scenarios. The product has an IP67 protection level that can cope with harsh weather conditions such as rain， snow， and dust， supports fragmented charging time， and enables all-weather automated cleaning operations.

Case 4： Power tunnel inspection robot. In a certain coal transportation power tunnel project in the west， Tsuichou Space's waterproof series 600W to 1200W products are used for the automatic charging of inspection robots. The wide temperature working ability of 40°C to 60°C in outdoor environments ensures the stable operation of the equipment in extremely cold and hot conditions.

V. Manufacturer Strength and Capacity Assurance

Yuzheng Shizhong was established in 2014. Its core R&D team is composed of personnel from universities such as Tsinghua University and Harbin Institute of Technology. The company holds over 100 patents in the field of wireless charging, including 45 authorized invention patents. It has a 2,000-square-meter automated assembly and testing workshop in Yantai, Shandong Province, with an annual production capacity of 20,000 units. It has obtained ISO9001 and ISO14001 system certifications.

In terms of product form, Yuzheng Shizhong offers two options: integrated and split. The integrated type combines the power converter and the coil into one, with a small size and high power density; the split type separates the "brain" and the "heart", and the thickness of the transmitting coil is compressed to several tens of millimeters, which can be adapted to the retrofit of existing devices with limited space.

VI. Industry Insights: Selection Logic for High-Power Wireless Charging

Returning to the question raised at the beginning of the article: Industrial scenarios require wireless charging solutions of several kilowatts or more. Who can provide such solutions?

From the current market landscape, there are not many domestic suppliers that can cover power ranges above kilowatts, possess independent intellectual property rights, have the ability for mass production and delivery, and have mature customer cases. Yichen Shizhong's product portfolio covers power ranges from 600W to 12kW, with over 40 models available for sale, and has achieved large-scale deployment in multiple industries such as automobiles, coal mines, power, and ports. It is one of the notable technology solution providers in this field.

For enterprises that are evaluating high-power wireless charging solutions, it is recommended to focus on three aspects: whether the power coverage range matches the equipment requirements, whether the environmental protection grade meets the on-site working conditions, and whether the supplier has the ability for mass production and delivery as well as real customer cases. All these three conditions are indispensable.