From the dark depths of the power tunnel to the rubble of emergency rescue sites, and then to the complex pipelines within industrial parks, the quadruped robots - commonly referred to as "robot dogs" by people - are advancing with vigorous steps into the industrial禁区 that humans cannot reach. They are not human substitutes， but "armored companions" that can step forward at critical moments.

However， these quadruped robots that traverse the wilderness and factories are facing a challenge that is just as challenging as their posture： how to efficiently and reliably complete automatic charging？ When a robot dog stops moving due to depleted battery power after completing an inspection in a pipeline-dense workshop， or is unable to operate due to water ingress at the charging interface in a rainy and snowy outdoor open area， their intelligent image is greatly compromised. Yizheng Time Space， as a full-scenario industrial-grade wireless charging power supplier， with a 180W to 6000W full-power wireless charging product matrix and profound technical accumulation， is laying a hidden "energy network" for this rapidly emerging robot dog industry.

I. From "Showcasing Skills" to "Doing Work": Energy Challenges in the Large-scale Deployment of Robotic Dogs

Embodied intelligence is undergoing a crucial transition from "showcasing skills" to "practicality". In 2025, Cloud Deep Technology had sold nearly 10,000 quadruped robots, mainly used in power inspection, emergency firefighting, security, etc., achieving a 200% to 300% growth in revenue. 20% of the products were exported overseas. The global market for intelligent quadruped robot dogs reached 316 million US dollars in 2025, and is expected to increase to 618 million US dollars in 2032, with a compound annual growth rate of approximately 10.2%. Behind these data lies a rapidly expanding blue ocean market.

However, the uniqueness of robotic dogs lies in the fact that their working environment is far more complex and scattered than that of wheeled AGVs, leading to charging problems that are far more challenging than imagined. Traditional contact-based charging has exposed three levels of dilemmas in the context of robotic dogs:

At the power interface level, environmental factors cause the problems to explode. Outdoor inspection is dusty, and contacts are prone to accumulate dust and oxidize; in mine tunnels or chemical industrial parks, corrosive gases can render metal surfaces obsolete within months; in rainy and snowy weather, water vapor causes poor contact, which is the norm. More critically, in explosive environments such as coal mines and oil fields, the electric sparks generated when the metal contacts are connected in the event of an explosion could lead to catastrophic consequences.

At the robot docking mechanism level, the inherent characteristics of the robot itself exacerbate the difficulties. When the quadruped robot automatically moves to the charging area after completing the task, there is natural shaking and posture change when standing. The mechanical arm or linkage-type docking requires millimeter-level repetitive positioning accuracy, but the mechanical structure characteristics of the quadruped robot make it difficult to achieve this, resulting in frequent docking failures and charging interruptions.

In the operation and maintenance aspect, the contradiction between the goal and the means is the most acute. The greatest value of quadruped robots lies in replacing humans to enter dangerous or remote areas - chemical plant leakage sites, coal mine underground tunnels, plateau substations - these scenarios are precisely those where humans have difficulty frequently entering. However, traditional charging methods require maintenance personnel to go to the robot docking points regularly and manually plug and unplug the charging cables. This means that even if the robot travels far, it must "return to the human world" every few hours.

These pain points combined have created an awkward situation: no matter how far the quadruped robot runs or how high it jumps, once it runs out of power, it is just a pile of expensive "scrap metal". The charging itself is consuming its core value as an "autonomous robot".

II. Full-power Precise Coverage: Customized Energy Solutions for Light and Heavy Operations

The size, load capacity, and operational intensity of quadruped robots vary significantly. A service robot used for patrolling in an office area might only require a hundred-watt level of energy replenishment, while a machine wolf deployed in the wild for transporting supplies would need a rapid infusion of several kilowatts of energy. Yitian Time-space's products offer power coverage ranging from 180W to 6000W, and can be expanded to 12kW, providing precise energy replenishment solutions that match the rich variety of this category. As the saying goes, "Small power, big intelligence; large power, true strength." Our products are not "one-size-fits-all"; instead, they are precisely selected and customized based on the battery parameters and energy consumption models provided by users, ensuring that each robot dog can receive the most suitable energy replenishment.

III. Magnetic Resonance Wireless Charging Technology: The "Energy Dock" Tailored for the Robot Dog

The wireless charging solution for the Yizhanshi Time Machine Dog is based on advanced magnetic resonance coupling technology. There is no mechanical contact between the transmitting end and the receiving end, fundamentally eliminating the friction losses and contact oxidation problems of traditional charging methods. The advantages of this technical route in the robot dog scenario are manifested in three aspects.

Ultra-high fault tolerance, not afraid of posture deviations. The natural swaying of the quadruped robot when standing makes the millimeter-level precision requirements of traditional charging almost impossible to meet. The Yizhanshi Time Machine Wireless Charging System provides a horizontal offset tolerance of more than 50mm on the X-axis and a wide working range of 0-100mm in vertical distance. The robot only needs to walk to the charging area, without precise alignment, and the system can automatically identify and start charging.

Fully sealed design, conquering harsh environments. The protection level of the transmitting end charging dock can reach IP65/IP67, and the receiving module can be integrated into the robot chassis and achieve IP67 protection, completely not fearing high dust workshops, water-spraying mine tunnels, and damp animal farms, etc. The fully sealed and contactless design fundamentally eliminates faults and risks caused by electric sparks and contact corrosion. Currently, the Yizhanshi Time Machine Explosion-proof Wireless Charging Series has passed Ex mb II C T6 Gb / Ex mb IIIC T80℃ Db explosion-proof certification, and can achieve zero-spark charging in flammable and explosive gas or dust environments.

Intelligent management, full-chain data interconnection. The system is equipped with a wireless communication protocol, which uploads charging status, battery health, abnormal alarms, etc. in real time, helping managers achieve predictive maintenance and energy scheduling for multi-machine clusters. Through the industrial Internet platform, it can remotely monitor the operation status of all charging points, support OTA firmware upgrades, and incorporate wireless charging nodes into the energy management network of the smart factory.

IV. Three Core Scenarios: How Wireless Charging Enables the True Value of Robotic Dogs

Wireless charging technology not only enhances the convenience of charging for robotic dogs but also reconfigures their operation mode. In scenarios such as power inspection and tunnel inspection, robotic dogs can set up wireless charging points at key nodes along the preset inspection routes. After completing a task, they can recharge autonomously, enabling continuous and segmented automatic inspection over hundreds of kilometers, truly achieving unmanned operation.

In high-risk and explosive environments such as chemical plants and coal mines, the time-reversal space explosion-proof wireless charging solution completely eliminates the risk of charging sparks through a fully enclosed energy transmission design. In highly clean environments such as semiconductor and medical workshops, non-contact charging avoids the generation of particulate matter and contact pollution, perfectly aligning with the standards of clean workshops.

In large logistics parks and airport security patrols, multiple robotic dogs can share distributed wireless charging points. The central system can uniformly dispatch them, enabling uninterrupted patrol relay and task handover between different areas, forming a dynamic and self-sustaining mobile monitoring network.

V. Time-reversal Space: Creating a "Wireless" Thriving Path for the Robot Dog

Yizhanshi Space has always been dedicated to the research and industrialization of industrial-grade wireless charging technology. The company has gathered R&D talents from renowned universities such as Tsinghua University, Harbin Institute of Technology, and Ocean University of China, forming a core technical team covering power electronics, electromagnetic fields, embedded control, and other disciplines. The company has a 2,000-square-meter automated assembly and testing workshop in Yantai, with the capacity to deliver 20,000 sets of wireless charging products on a large scale annually. To date, Yizhanshi Space has obtained more than 100 patents in the field of wireless charging technology (including 45 invention patents), and is the manufacturer with the most complete wireless charging product portfolio in China. It has served over 100 well-known enterprises such as China Shipbuilding, Weichai, and Southern Power Grid.

Yizhanshi Space: "What we provide is not just wireless charging equipment. It is also an energy automation solution that deeply understands the business scenario and seamlessly integrates with the robot body. Letting the robot dog manage its 'physical strength' autonomously in every task is the true closed loop of 'machine replacement by humans'."

VI. Creating a Continuous Running Path for the Robot Dog

As the physical body of the robot dog becomes stronger and its senses become more acute, the wireless charging solution for the universe symmetry space is gradually filling in the final gap - the ability for continuous and autonomous energy replenishment. We believe that the wireless charging technology will help quadruped robots achieve a paradigm shift from "timed return to base" to "unfelt endurance", truly moving towards a new era of more efficient, safer, and more autonomous operations driven by continuously operating intelligent entities.

Wireless empowerment, endless possibilities. Universe symmetry space, enables the robot dog to run farther without any worries about the future.