The World Economic Forum website recently reported that wireless charging technology is gradually changing the way energy is supplied and managed in society. Its application prospects are broad, covering many fields such as healthcare, smart cities, space exploration, industrial robots, automatic transportation systems, and electric vehicles. With the continuous advancement of technology, it is expected to seamlessly integrate with emerging fields such as the Internet of Things and renewable energy, laying a solid foundation for a truly wireless future. At present, the industry has established a wireless charging alliance and launched the internationally recognized Qi standard, which has effectively promoted the commercialization process of this technology. According to a research firm in India, the global wireless power market is expected to surge to 96 billion yuan by 2026, approximately three times the size of 2021. According to a report by LinkedIn on October 27th, the Chinese industrial wireless charging transmission market is expected to be worth 5.95 billion yuan by 2025, with a compound annual growth rate of 16.66% from 2026 to 2033, and is expected to exceed 15 billion yuan by 2033. A revolution in the field of energy distribution, wireless charging has freed itself from the constraints of wires and can be regarded as a revolution in the field of energy distribution. It no longer relies on various cables, plugs, and sockets, greatly simplifying the energy transmission process. Users only need to place the device close to the power source to achieve seamless charging. Its working principle is similar to that of a microwave oven, which amplifies the power of the radio waves and emits energy within a range of 1-10 meters, thereby achieving charging of the device without the need for a power cord. Wireless charging exhibits unique advantages in scenarios where wired connections pose risks, such as medical implant devices and industrial environments. It effectively avoids hidden dangers such as electric shock, wire wear and short circuit, and is not easily affected by environmental factors such as rain and snow. The long-term maintenance cost of the system is also lower than that of wired solutions. The wireless charging system can provide power to multiple devices simultaneously. In addition, both wireless charging pads and dynamic vehicle charging channels support devices to continuously replenish power while in motion. It can also provide continuous power supply for various sensors, smart devices, and IoT ecosystems, which is expected to give rise to wireless powered drones, robots, and vehicles, and even support extraterrestrial exploration missions through space energy transmission. Advanced wireless charging systems use technologies such as magnetic resonance and beamforming to effectively reduce energy transmission losses. In addition, this technology can be combined with renewable energy sources such as solar and wind power to further enhance the green level of energy utilization. Innovative applications abound. In 2024, Indiana, USA showcased a wireless charging highway where vehicles can automatically replenish power while driving. This type of innovation reduces reliance on fixed charging stations, improves user convenience, and is expected to promote the popularization of electric vehicles. The Cota adapter developed by American technology company Ossia is its core product, which can wirelessly charge all USB devices, including Bluetooth speakers, tablets, game controllers, and various low-power smart home devices. At present, this technology has been applied to products such as security cameras and hearing aids. Silicon Valley company Energous has released WattUp wireless charging technology, which can transmit 5.5 watts of power within a distance of 5 meters and supports "one to many" charging mode. WattUp has the advantages of simple design, compact size, and low cost, and is expected to be applied in consumer electronics, medical, industrial, and automotive fields. The LIGHTS remote wireless charging device developed by Israeli Wi Charge company uses infrared light that is invisible to the naked eye. Whenever the light is turned on, it can automatically charge electronic devices. The company received funding from the European Innovation Council in May this year to accelerate the implementation of this technology in areas such as hotels, smart homes, mobile devices, augmented reality, and wearable devices. Charles Goetz, CEO of PowerCast, a wireless charging startup in the United States, predicts that in the future, everything from cars and appliances to headphones, phones, and wearable devices will be connected to power wirelessly, allowing people to enjoy a seamless and convenient electricity experience. Radiation and technical issues still need attention. Although wireless power supply technology has broad prospects, it also faces multiple challenges. Among them, the potential impact on human health and the issue of radio interference are particularly concerning and urgently require in-depth research and proper resolution. Research shows that the electromagnetic radiation intensity generated by wireless charging devices is significantly higher than that of ordinary wireless communication. Therefore, in order for this technology to truly "fly into ordinary people's homes", it is necessary to strictly control electromagnetic radiation within a safe threshold while improving transmission efficiency. Technical bottlenecks and cost constraints also constrain the large-scale application of wireless charging systems. Building an efficient power transmission system requires both precise engineering design and comprehensive optimization strategies. Effective control of energy consumption and establishment of intelligent thermal management mechanisms are required during system operation. At the same time, achieving seamless integration with existing infrastructure also puts higher demands on engineers. Despite the numerous challenges ahead, with continuous technological breakthroughs, wireless charging is still expected to reshape the global energy landscape and promote the evolution of the energy system towards a more sustainable and intelligent direction. It is not only transmitting energy, but also injecting lasting momentum into the progress of human civilization and the construction of an interconnected world. (New Society)