Recently, Shenzhen Hertz Innovation Technology Co., Ltd. successfully applied wireless charging in the cold chain of Yantian Port, solving an important pain point of charging difficulties in the industry and taking a step forward to realize the unmanned cold chain.Figure 1 Wireless charging application in Yantian Port cold storageCold storage operating conditions are harsh, and the cold chain industry will gradually face labor shortages. At the same time, market competition is fierce. Automation and intelligent upgrades have become important ways to reduce costs and increase efficiency in cold storage operations. The difficulty of charging is a key point that has been very difficult to solve in the industry. Wireless charging technology has undoubtedly brought revolutionary changes to the cold chain.Figure 2 Wireless charging and environment in Yantian Port cold storageThe core of AGV wireless charging in the cold chain is to use wireless charging technology to realize wireless transmission of power from charging equipment to AGV, avoiding the pain point of being unable to charge due to water droplets generated in traditional contact methods. In practical applications, Hertz's innovative wireless charging not only simplifies the AGV charging process, but also reduces safety risks caused by moisture issues.In order to realize AGV wireless charging in the cold chain, Hertz innovatively uses magnetic resonance technology, which is not only waterproof and dustproof, but also achieves efficient and stable wireless charging. In addition, in order to ensure safety and efficiency during the charging process, we also designed a charging control strategy to intelligently manage and monitor the charging process, and the status can be viewed at any time in the background.

With multiple explosions in the chemical industry, it has caused a sensation in the industry. More and more enterprises have realized the importance of safety during inspections. The country has also introduced a series of safety requirements and measures to enhance inspection technology and invest in charging safety technology. From last year to this year, leading enterprises have developed rapidly. They have made significant investments in the application of explosion-proof inspection robots in harsh environments such as chemicals, petroleum, natural gas, and coal mines, achieving a breakthrough of thousands of units in both quantity.07c9d93cb9ceee6ae8cbc6c0bae91a74.jpegA chemical plant exploded, and inspection robots assisted in search and fire suppression.The explosion inspection industry is developing rapidly, especially as the industrialization process progresses and higher safety requirements are imposed. The inspection methods are being changed to be more efficient and precise. At the same time, the demand for explosion-proof equipment and technologies is increasing, which will drive the further development and innovation of the industry. The charging of explosion-proof inspection vehicles is an important core aspect. Especially for underground inspection in chemical, petroleum, and coal mines, wireless charging is necessary when charging, and Hertz Innovation has noticed that the main working scenarios of explosion-proof robots are in the chemical field and the coal mine field. The adaptability of the charging process to environmental changes in these fields requires absolute guarantee. Therefore, for the requirements of automatic charging and harsh environments, the main characteristics of these charging states, Hertz Innovation's full-stack self-developed explosion-proof wireless charging system is currently at the industry-leading level and has multiple mature application cases in different fields.WeChat screenshot_20240528225808.png WeChat screenshot_20240528225808.pngApplication cases and illustrationsHertz Innovation, as a national high-tech enterprise specializing in the research and development and production of wireless charging products, has been deeply engaged in the field of wireless charging for many years. It has accumulated a lot of experience in the chemical, coal mine, and power industries, meeting relevant explosion-proof standards such as Ex mb IIC T6 Gb Ex mb IIIC T80℃ Db, and enabling customers to achieve "wireless power supply, unlimited freedom" application scenarios, empowering unmanned operations. It also provides a complete wireless charging solution and can cooperate with customers on data upload, monitoring of the dispatch system, and other data management. Whether in terms of efficiency, temperature, distance, etc., the control is ahead of the industry. Adhering to the open and win-win cooperation concept, Hertz Innovation is willing to closely cooperate with partners in the ecosystem chain, collaborate efficiently, promote application innovation, and provide leading solutions and high-quality services to end customers.

In recent years, low-speed unmanned vehicles have been widely applied in various industries. For instance, in the field of unmanned sanitation cleaning, the first international sanitation robot competition was held in Shenzhen in March 2024, which caused a sensation in the industry. In the field of unmanned logistics/delivery/express delivery, leading enterprises have developed rapidly in the past year, achieving a breakthrough of 1,000 units in quantity. In the field of autonomous buses and unmanned landscape vehicles, relevant departments of local governments have been actively promoting the implementation and application of autonomous vehicles in their regions. At the same time, many leading technology enterprises are launching different types of new products for experimentation and expansion.Overall, the development of the low-speed unmanned vehicle industry can be seen as follows: On the one hand, local governments have continuously increased support for the application of autonomous driving technology, enriching more application scenarios and enabling more advanced technologies to be applied to corresponding products, making technology accessible to the public. On the other hand, autonomous driving has continuously broken through in terms of technology and cost, which also relies on the research and development support and concerted efforts of upstream and downstream enterprises in the industry, promoting the technological development of the overall system.Hertz Innovation has noticed that charging for low-speed unmanned vehicles is an important core aspect. Especially when vehicles have achieved unmanned charging, if a full-scenario unmanned operation is to be created, automatic charging must be realized. It is definitely not desirable to need to send special personnel to plug the charging gun for unmanned vehicles. At the same time, Hertz Innovation has noticed that the main working scenarios of low-speed unmanned vehicles are outdoors, so the adaptability of the charging process to different climate and weather changes in the outdoors needs to be absolutely guaranteed. Therefore, for the main characteristics of automatic charging and outdoor waterproofing, our Hertz Innovation has independently developed and designed a high-power wireless charging system, which is very suitable for low-speed unmanned vehicles. Currently, there are multiple mature application cases in different fields in the industry.Applicable to low-speed unmanned vehicle chassisInnovatively, we have increased the wireless charging sensing distance. Currently, the corresponding model belongs to the industry's longest charging distance of 120mm, which is particularly suitable for the high ground clearance of unmanned vehicle chassis, facilitating flexible deployment by customers and easy installation.Easily cope with outdoor environmentsThe sensing coil and vehicle-end components were designed at the initial planning according to the IP65 high-level waterproof and dustproof standards; for cold regions, a unique charging technology was pioneered to preheat the battery before charging, solving industry problems, and greatly ensuring battery safety and durability, easily coping with various harsh climates such as rain, snow, and cold across the country.Certified by German TÜV RheinlandThrough cooperation with the German TÜV Rheinland Group, we have helped our high-power wireless charging equipment services reach overseas customers and ensure the compliance and safety use of global customers in various regions. This has added a higher dimension of guarantee to our wireless charging products.

[Source: AutoCar]AutoCar has learned from relevant sources that Tesla may acquire the German wireless charging startup Wiferion recently to develop the wireless charging function for Tesla models.WiTricity is a startup company that attempts to promote the wireless charging concept to automakers. It obtained the license for inductive charging technology from the German startup Wiferion and, after failing to cooperate with its first partner Toyota, WiTricity attempted to sell the inductive charging for cars as an after-sales solution.WiTricity modified a Tesla Model 3 (parameters and inquiries available) and installed a power receiver on it. Simply parking the electric vehicle on the corresponding charging plate enables charging. WiTricity's solution can charge the car at a power of 11 kilowatts. For example, for the Tesla Model 3, a full charge would take 6 hours.For a long time, Tesla has been researching inductive charging solutions. During the investor day on March 1st, Tesla's global charging infrastructure director Rebecca Tinucci proposed a wireless charging solution, but no detailed introduction was given at that time. Combined with the latest acquisition information, Tesla is likely to be interested in WiTricity's solution and decide to directly acquire its technical source - the Wiferion company.Editor's opinion: Wireless charging can be seen everywhere in our daily lives, such as mobile phones, watches, electric toothbrushes, etc. It does bring a convenient charging experience. However, to apply this technology to cars, there seem to be many difficulties. We look forward to Tesla providing a better solution.

To promote energy conservation and emission reduction, and to reduce vehicle exhaust emissions and prevent air pollution, electric vehicles (Electric Vehicles, EVs) have become a new type of transportation vehicle that is vigorously promoted by countries around the world. However, due to the limitation of battery capacity, the range of electric vehicles is short, and the charging problem has always been one of the main bottlenecks restricting the development of electric vehicles.With the development of radio energy transmission technology, the static wireless charging technology for electric vehicles based on magnetic coupling has received increasing attention. Compared with the traditional wired charging system, the wireless charging system has no electrical connection and has the advantages of convenient operation, low maintenance cost, waterproof and dustproof, and the ability to achieve a fully automatic charging process.The typical structure of a static wireless charging system for electric vehicles is shown in Figure 1, including power electronic converter, primary compensation network, transmitting coil, receiving coil, secondary compensation network, high-frequency rectification and filtering circuit, and battery load, etc. In recent years, scholars and research institutions at home and abroad have conducted a large amount of research on the static wireless charging technology for electric vehicles based on magnetic coupling.However, as the research progresses, many key problems still need to be solved, such as the system's anti-offset ability, sensitivity to the environment, optimization design of the system structure, and stability control. Currently, the research on static wireless charging technology for electric vehicles is in a stage of overcoming difficulties, and further improvement and application of existing theories, as well as innovative and breakthroughs in principles, are still needed.Based on the current research status of static wireless charging technology for electric vehicles in China and abroad, it can be seen that this technology has been comprehensively studied in all aspects, but there are still many problems to be solved. The main manifestations are as follows:(1) The anti-offset ability of the systemHow to improve the anti-offset ability of the system has always been a research hotspot in the field of wireless charging for electric vehicles. In practical applications, due to the influence of the user's parking position, the relative position of the primary and secondary coils in the system will change within a certain range, causing a change in the coupling coefficient, which requires the system to have a strong anti-offset ability.Currently, methods such as the design of magnetic coupling mechanisms or system closed-loop control are mainly used to improve the anti-offset ability of the system, but these technical approaches have limited improvement effects. Therefore, it is necessary to seek breakthroughs from the mechanism. The radio energy transmission technology based on the parity-time symmetry (Parity-Time Symmetry, PTS) principle can achieve a constant output power and efficiency within a certain range, independent of the coupling coefficient. In addition, the radio energy transmission technology based on fractional-order circuits also shows excellent characteristics and can be applied to electric vehicle wireless charging, which is expected to further enhance the anti-offset ability of the system.