Since its launch on December 26, 2023, the Panoramic Smart flagship SUV Wenjie M9 has set a record of exceeding 70,000 units in just three months. As a 500,000-level luxury model, it is already far ahead. At the same time, Hongmeng Intelligent's April sales data shows that the sales volume of Wenjie M9 reached 13,391 units, surpassing all luxury brands, and topped the monthly sales rankings in the Chinese market regardless of energy type, vehicle model structure, and market segments above 500,000. The industry's first car-grade projection giant screen equipped on the Wenjie M9 has also made huge waves in the projection industry. This innovation not only sets a new milestone for in-car entertainment systems, but also marks the perfect integration of automotive technology and high-end movie viewing experience. . 问界M9车规级投影巨幕 This large, liftable screen created by Guangfeng Technology (688007.SH), one of the first companies listed on the Science and Technology Innovation Board, has overcome many technical problems that ordinary consumer-level projections can imagine. The cost of just one lift screen can be described as "inches of land." gold". In this article, we interviewed Engineer A, the R&D representative of the screen for this project. From his perspective, let’s take a look at how the R&D staff “bravely and bravely” made the breakthrough to create this industry’s first car-grade projection lifting screen. How difficult is it to get to "car level"? Automotive electronic products are generally relatively expensive. The most important reason is that automotive components need to meet higher standards before they can be "onboard", that is, car-grade. Common components are generally classified according to operating temperature, radiation, anti-interference, etc., from low to high: consumer grade, industrial grade, automotive grade, military grade, and aerospace grade. The operating temperature range of consumer-grade components is 0℃~70℃, which is the most common type on the market. Computers, mobile phones, household appliances and other commonly used components in daily life basically use consumer-grade components. The cheapest price;The working temperature requirements of automotive-grade passenger compartment components are -40℃~85℃, and they need to be used normally in extremely cold or ultra-high temperature working environments.。 In terms of service life, the standard requirements of consumer grade and automotive grade are also very different. The basic life requirement for consumer grade is 2 to 3 years, while the entry requirement for automotive grade is 10 to 15 years. In addition, there are many car-grade test contents that are unimaginable for ordinary consumer products, including: 1) Impact test:Cars will produce vibrations and shocks while driving, and these forces may cause damage to components. Vibration testing simulates a vehicle driving on a bumpy road surface, while impact testing simulates the impact of a sudden collision or sudden braking on components;2) Salt spray test:For vehicles in coastal areas or on roads with salt in winter, the salt spray test evaluates the component's resistance to salt to ensure it will not be damaged by corrosion;3) Flame retardant test:Components inside cars must have certain flame retardant properties to reduce the risk of fire. Flame retardant testing evaluates how components react when exposed to a fire source to ensure they do not burn quickly or contribute to a fire;4) Fog test:It can also be understood as humidity and mold testing. Cars will face different humidity conditions in different regions and seasons, which may lead to mold growth and corrosion. Humidity and mold testing ensures component materials and coatings are resistant to moisture and mold, maintaining long-term reliability;5) Smell test:An important part of the safety performance evaluation of automotive interior materials is to ensure that the air quality in the vehicle is harmless to the health of drivers and passengers;…… More than 50 reliability, electrical performance and EMC test items, you need to clear customs one by one to obtain the access pass of the car company. The biggest R&D problem: starting from scratch "The giant projection screen is 'on the road' because the standards are completely different, so the experience of consumer-level products cannot be reused, and it cannot be simply installed." said worker A. In order to solve this problem, the curtain R&D team acted quickly and conducted in-depth research on more than ten curtain materials on the market. Unfortunately, they were unable to find any material that could fully meet the strict standards of vehicle regulations. Faced with this dilemma, the curtain team did not shrink back, but chose an innovative path, determined toStarting from scratch, develop a brand new curtain. They quickly invested in intense research and development work. After hundreds of program designs, tests and optimizations, and hundreds of material screenings, they finally successfully applied an innovative special elastic material to the curtain. This special elastic material has excellent hydrolysis resistance and salt spray resistance, can remain stable under extreme temperature and humidity conditions, and is not easy to peel or stick back even under salt spray erosion. At the same time, it also has excellent anti-aging capabilities. After long-term UV irradiation and weathering tests, it can still maintain bright colors and structural integrity, almost impeccably meeting the high standards of vehicle regulations. Facing the just-made achievements in the development of curtain materials, the team had no time to immerse themselves in joy, because new challenges were imminent—the design problems of motors and anti-seismic structures needed to be solved urgently. These challenges are similar to the research and development of screen materials, that is, in the mature consumer-level projection screen market, such stringent requirements have never appeared. Specifically,The motor must be designed to be extremely compact to fit into the limited space on the roof, while also requiring an extremely long service life.The curtain needs to show strong earthquake resistance when the vehicle is driving., ensuring that passengers can enjoy a stable and comfortable visual experience when watching. These requirements not only test the team's innovation capabilities, but also drive them to move forward on the road of technological innovation. In the end, the answer sheet handed over by the R&D team was: an ultra-small motor that meets the requirements of vehicle regulations and passed the20,000 times lifting durability test;setCompletely self-developed, innovative X-shaped curtain connection structure，以及and Unique motor locking method，Let the projector's shock resistance reach the extreme。 Through the X-shaped curtain structure, even if the vehicle is traveling at a speed of 80 kilometers per hour and all windows in the vehicle are open, the projected image will remain stable and shake-free, significantly improving the viewing experience in the vehicle. This enables the overall car-grade lifting curtain solution to pass the TUV Rheinland eye comfort and Swiss SGS anti-sickness certifications, ensuring that long-term viewing will not hurt your eyes or cause motion sickness. The entire solution has passed the -40℃, 85℃ hot and cold cycle impact test required by vehicle regulations; nearly 100 hours of salt spray environment testing; 1m height bare metal drop test; impact test meeting 50G peak acceleration; working at 85℃ for more than 1,000 hours Hours of overall machine life test; 25-day gas lamp test, simulating solar radiation test in the full solar band; low-pressure test in an equivalent altitude environment of 4850m... R&D representative A shared: "We have invested more than a year of hard work in this curtain project. The requirements of the vehicle regulations are much higher than expected. We started almost from scratch and carefully crafted the plan step by step, each step Each step of progress was accompanied by hundreds of rigorous tests. In the end, our efforts were recognized by the customer and the project was successfully accepted together with the Wenjie M9, bringing a new in-car entertainment experience to drivers and passengers. , which makes us extremely proud.” A 32-inch car-grade projection screen can operate normally in working environments as cold as -40°C and ultra-high temperatures as high as 85°C. It has undergone a durability test of 20,000 lifts and passed more than 50 strict car regulations. Verification, R&D innovation from scratch, and the ultimate demand for driver and passenger experience. This is the secret of the giant screen's "every inch of land is precious." The material of this article comes from Guangfeng Technology Aibang has created a vehicle-mounted display exchange group, which currently includes FAW, SAIC, Geely, Great Wall, Changan, Harman, Magneti Marelli, Huayang, Desay SV, Hangsheng Electronics, Tianma, BOE, TPK, Changxin Technology, and Truly , Leybold, Lens, Bourne, Teyi, Victory Precision,星星科技、TDK, Wacker, 3M, Tongli Optoelectronics, Corning, SCHOTT, Asahi Glass, Tunghsu, Niebling, Sumitomo, Seibel and other upstream and downstream enterprises in the industry chain have joined. Friends are welcome to scan the QR code to join the group. 活动推荐一：The 6th Automotive Intelligent Interior Ambience Lighting Industry Forum (May 17, Chongqing)
Event Recommendation 2: The 5th Intelligent Car Lighting Innovation Technology and Supply Chain Forum (May 16, Chongqing)
Recently, vehicles equipped with integrated black, large-sized displays have gained recognition among many consumers, becoming a hot topic in the industry. Of course, curved displays, 3D glass, large multi-screen setups, OLED, and other hot topics have always been the focus of competition among major manufacturers. In such an industry landscape, Aibang has established a car display communication group. Currently, upstream and downstream enterprises in the display and bonding industry chain, such as FAW, SAIC, Geely, Great Wall, Changan, Harman, Marrelli, Huayang, Desay SV, Hangsheng Electronics, Tianma, BOE, TPK, Changxin Technology, Xinli, Lai Bao, Lanshi, Bern, Teyi, Victory Precision, Xingxing Technology, TDK, VAC, 3M, Tongli Optoelectronics, Corning, Schott, AGC, Nippon Electric Glass, Sumitomo, and Sabic, have joined. All friends are welcome to join the group for discussions and mutual progress.
English 
Chinese