Introduction: China is currently the world's largest producer and consumer of new energy vehicles, but in core components such as battery measurement and battery management, the chip mainly relies on imports. However, with the emergence of domestic battery management chips, it will break the foreign monopoly and enhance the core competitiveness of China's new energy vehicles. The core of the electric car is the battery, while the core of the battery is in the battery management system (BMS). Many new energy auto companies at home and abroad regard the battery management system (BMS) as the core technology of the enterprise. The Tetris electric vehicle "three big parts" that everyone is familiar with, the battery comes from Panasonic, the motor comes from Taiwan The supplier, and only the battery management system (BMS) is the core technology of independent research and development. The core intellectual property rights applied by Tesla during the period of 2008-2015 are mostly related to the battery management system. This shows that the battery management system is new energy. The importance of the car. With the growth of new energy vehicle sales, the market size of battery management systems has grown rapidly. At present, vigorously developing new energy vehicles has become the consensus of all countries. Major countries such as the United States, China, Japan, Germany, South Korea, and the United Kingdom have all established their own plans for the new energy automobile industry. The battery management system (BMS) is mainly divided into two parts. The first part is the front-end analog measurement protection circuit (AFE), including battery voltage conversion and measurement circuit, battery balance drive circuit, switch drive circuit, current measurement, communication circuit; The second part is the back-end data processing module, which is based on front-end calculations such as voltage, current, temperature, etc., and transmits the necessary information back to the system through the communication interface for control. At present, the battery management system (BMS) product design scheme of electric vehicles is monopolized by foreign manufacturers, and the battery management ICs provided by foreign semiconductor manufacturers are selected, and the application scheme is used as a reference for design. Maxim, ADI/Linear Technology, Intersil, TI, NXP, ON/Fairchild, etc. are major solution providers. The emergence and development of battery management ICs are closely related to the problems encountered in the application of lithium batteries. At the earliest, in order to solve the overcharge and overdischarge of lithium batteries, a single-cell battery charge and discharge protection chip was designed. Later, in the multi-section series application of lithium battery, it was developed into a multi-string chip. At this time, it became a battery management. The chip mainly collects the voltage data of each battery in the battery pack. In order to cope with the problem of battery inconsistency, the power switch function is further integrated. This is the battery management IC with equalization function. Texas Instruments Battery Management System (BMS) Solution Looking forward to the rapid development of new energy vehicles, it must be clearly recognized that the development of technology is the basis for the development of the industry, and stable, efficient, safe and reliable products are the embodiment of technology. We must know that the current domestic new energy vehicles The industry is not friendly, and the frequent spontaneous combustion events and false cruising range of electric vehicles have exposed the imperfections in the design, testing and production standards of new energy battery packs and battery management systems in China. These are the problems that new energy vehicles are currently in urgent need of, and the reason for these use problems is that they do not use battery management systems or use inferior and immature battery management systems. In order to solve the safety problem of new energy vehicles, the battery management system must be one of the key tasks of the government and the automotive industry. Although there are many battery management system (BMS) companies in China, many companies have mastered the core algorithms of battery management systems, but they mainly rely on imports in core components such as microcontrollers (MCUs), battery measurement and communication ICs, etc. . Advanced technology, stable and reliable products are the core characteristics of battery management products of foreign companies. They explain their competitiveness from four dimensions: technology, function, quality and standard specifications. After years of independent research and development, in recent years, China's battery management chip has changed completely relying on the pattern of import procurement, with core technology core intellectual property from chip level to system, forming a complete electric vehicle from chip to system to complete The localization industry chain of the car. Weiwei Electronics has been concentrating on research and development, and is committed to promoting the localization of electric vehicle chips. It provides a complete set of integrated circuits from motor control to battery protection, designing professional chips and solutions. The product line includes battery fuel gauge chips, battery management chips and batteries. Protection chip, BMS front-end acquisition chip and USB charging control chip. At present, the technical level of domestic chips can already achieve the replacement of imported brands. But a bottleneck is that to apply to the field of electric vehicles, it also needs the cooperation of relevant manufacturers. The electric vehicle battery system is a complete system, and how to integrate the chip well is a difficult problem for domestic chip manufacturers. In order to promote the localization of electric vehicle chips, Saiwei Microelectronics cooperated with Dongguan Weiwei Power. The two parties will jointly develop the analog front-end acquisition ICs for electric vehicle battery management systems, and plan to jointly establish a localization industry alliance for electric vehicle core components. The alliance plans to localize the core components of electric vehicles within three years and gradually replace the products of foreign brands. Due to the high technical threshold, there are fewer competitors in domestic lithium battery management chips. Zhongying Electronics Co., Ltd. is a high-tech enterprise specializing in the design and sales of single-chip ICs. In 2007, it invested in the research and development of lithium battery management chips. In the year, the application and customers of lithium battery management chips are increasing. The sales increase mainly comes from electric bicycles, balance vehicles, power tools and PAD, high-end mobile phone repair market for lithium battery protection chips. The chip can also be used for mobile power supplies for road rescue, wireless vacuum cleaners, and the like. The company's lithium battery products are divided into metering chips and protection chips. The company is working on the research and development of lithium battery management chips for new energy vehicles, and expects them to make new breakthroughs here. Zhongying Electronics SH367003 lithium battery safety protection program Due to the direct correlation with safety, automotive electronics are demanding on chips. Automotive electronics require high accuracy and accuracy under high temperature, high pressure, vibration and water conditions, and the technical threshold is high. The strict car recall system in the industry also forces manufacturers to raise the threshold of car chip quality. Only parts and components enterprises that have passed the certification of international relevant quality management systems can enter the complete vehicle supporting system and have the basic qualifications of suppliers. The certification process is complex and the certification cycle is long. Generally, more than 10 certification processes are required from the intention to the batch supply, and the certification cycle is generally as short as 18 months. In addition, even if you get the qualifications, you can only wait for the opportunity of the new product chain. The product function design of consumer products, the general IC design industry has long been familiar with, and in recent years, as the automotive market gradually moves toward the field of car networking and electric vehicles, more driving information-assisted integration systems are needed, and domestic chip design operators are also finding entry. The knocking on the market. However, for consumer electronics, the life expectancy of the product is about 1-3 years as the replacement cycle, but the vehicle electronics will jump in 10 years and look at the 15-year life cycle. How to find an experienced laboratory, assist customers to understand the car rules, and formulate the corresponding AEC-Q100/101/200 verification steps and methods, and enter the car supply chain smoothly is extremely important. Therefore, for new energy vehicle battery management chips, there are fewer opportunities for new domestic players. Although there are many chip manufacturers in China, there are not many companies that produce car gauge products. Moreover, the development and verification period in the early stage is long, and Chinese companies are accustomed to the operation mode of TIME to Market, lack of patience, and the value concept is contrary to it. The safety of new energy vehicles has always been one of the key tasks of the automotive industry. While looking forward to the rapid development of new energy vehicles, we must realize that stable, efficient, safe and reliable battery management system (BMS) products are The key to ensuring the normal operation of electric vehicles, and the battery management chip is the core. Only the localization of chips can make China's new energy vehicles have a sustainable future.
The biggest difference between Home Theater Projector and ordinary business projectors is the resolution and ease of use. Most of the mainstream Home Theater Projectors have a resolution of 1080P Full HD, and are equipped with an intelligent system, which makes the projector more convenient to use. Home Theater Projector mainly pursues brightness, color, and contrast, which can bring users an immersive and realistic experience.
Features
home theater projector bluetooth,home theater projector setup,home theater projector hd,home theater projector 1080p,home theater projector led Shenzhen Happybate Trading Co.,LTD , https://www.szhappybateprojector.com
2. Diverse uses: Home Theater Projector will be equipped with intelligent systems, which contain a large number of film sources. In addition, the projector can also be connected to different devices through different interfaces, such as game consoles, computers, U disks, etc. Only one machine can realize online drama, listening to songs, games, office and other functions.
3. Diffuse reflection eye protection: Home Theater Projector uses the principle of diffuse reflection to form images, which is less harmful to the eyes than the LCD screen.
4. Diverse usage scenarios: Home Theater Projector can adapt to different sizes of bedrooms, living rooms and even dedicated audio-visual room scenes due to its different brightness.
According to the increase of people's needs, the forms of Home Theater Projector are also becoming more and more diverse. In the past, people's impression of Home Theater Projector was mostly a square box placed on a cabinet or suspended from the ceiling, but there are already portable projectors that take into account both the sense of use and the size. In addition to portable micro-projectors, larger home laser TVs are also developing rapidly. Many users have abandoned traditional LCD TVs and opted for home projectors when decorating. It can also be seen from this that Home Theater Projector has a trend of gradually replacing LCD TVs.