With the improvement of people's living standards, secondary batteries, especially high-current batteries (lead-acid batteries, nickel-cadmium and nickel-metal hydride batteries) have gained more and more applications in the power sector, railways, and military. However, batteries can Whether reliable power supply and the life expectancy of the production plant are closely related to the correct maintenance of daily maintenance such as charging and discharging of the battery. Since the widely used battery does not have an intelligent detecting device, that is, it is not a digital battery, the charging and discharging current of the battery, the terminal voltage, the charging and discharging time, the number of charging and discharging, the charging and discharging capacity, the remaining capacity, the internal temperature of the battery, and Basic parameters such as service life can only be measured manually or roughly. Once an error occurs, it will have unpredictable consequences for our normal production and life, and will cause irreparable damage to the electrical performance and life of the battery. With the development of microprocessor technology, mobile electronic devices have developed rapidly in terms of their own functions. At present, most digital, intelligent, and internal control circuits are more or less completed by CPU chips. However, its power supply part is very primitive. Generally, only the DC power provided by one battery is given to the electronic device, and the parameters such as the characteristics and status of the battery itself cannot be provided to the electronic device, that is, the data cannot be performed with the related electronic device. Communication. This brings new challenges to the intelligent improvement of electronic devices. If the battery can store, record, analyze, control, print and display various status parameters through the microprocessor, intuitively provide it to relevant personnel, and realize data communication with related electronic devices, that is, digitalization, which can not only Reduce human error and extend battery life, and enable intelligent control and unattended operation of related electronic devices. Therefore, the research and development of battery digitization is an important topic. Digital battery concept The exact definition of digital batteries is currently not uniform. This concept comes from the rapid development of the information industry, which mainly comes from the world famous laptop design, production and supplier. In practical applications, once the battery is dead at critical times, it will inevitably cause unpredictable losses. The idea of ​​digital battery is proposed in this case. With it, we can grasp the working condition of battery power in time. Prepare in advance and replace in time. The working conditions mentioned here should include the following aspects: (1) Current battery terminal voltage, charge and discharge current, charge and discharge time; (2) current battery internal resistance, remaining capacity, remaining charge and discharge time, battery temperature; (3) current battery charge and discharge times, use life. In actual development, the researchers found that only understanding the working state of the battery can not meet our requirements for the battery, but also requires the battery to be able to communicate with the relevant electronic equipment to achieve automatic control of battery switching, battery charging and so on. It can be seen from the above that the so-called digital battery includes a common rechargeable battery, a digital battery control module, and a communication interface to complete various measurement and control management and data communication functions of the digital battery. In addition to being able to visually and accurately display (or provide) the above working conditions in digital form, it should also provide battery background information and identity data (such as battery manufacturing date, manufacturer data, etc.); Protection alarm measures (such as overvoltage protection, over temperature alarm, etc.); at the same time it should comply with a certain communication protocol (such as system management bus SMBus), with an interface to communicate with the host, intelligent charging controller, etc., capable of information transmission and control. Digital battery status and development and application value Digital batteries were first developed from abroad. As early as 1995, the US military already had digital battery equipment, but these batteries were not digital and the versatility was not strong. According to the collection of limited information on the Internet, the digital battery developed by foreign countries is mainly composed of rechargeable batteries and control modules. The software part of the control module should conform to the specific communication protocol. The digital battery system hardware composed of digital batteries includes: a system host, a digital battery (which may be one or several), an intelligent charging controller, an AC/DC converter, and a bus network for transmitting data. The software includes communication protocols for transmitting data, data processing platforms and embedded operating systems, and corresponding programs. There are many companies and companies in foreign countries involved in the research and development of digital batteries. Intel and Duracell jointly produce digital batteries. This product is named PowerSmart and meets the SBS (Intelligent Battery System) standard. Motorola is also developing digital batteries that can be accepted by a wide range of users. Germany's battery giant Varta and Duracell are working together to develop a new generation of digital batteries that will soon be available. According to the tenth five-year plan of the battery industry, the United States, Japan and Europe account for 70% of the global battery market. In the consumption of batteries, the average annual per capita in the United States is 25/person; in Japan, the average per capita is 20/person. In China, the average annual consumption of batteries is less than seven. Therefore, batteries have a large market in China. China's battery industry has focused on the development and production of mercury-free alkaline manganese batteries, hydrogen-nickel power batteries, lithium-ion batteries, fully sealed maintenance-free lead-acid batteries, automotive power batteries, fuel cells, and solar cells. In the army, secondary batteries such as cadmium-nickel and hydrogen-nickel batteries are used in large quantities, and military lithium-ion batteries are also under development. They will soon be equipped with troops. In the future, there will be three kinds of storage batteries coexisting. Up to now, only a very small number of units or research institutes are conducting research and development of digital batteries. There are only a few digital battery development products, and a complete digital battery system has not yet been developed. Therefore, in China, the digitalization of secondary batteries has great room for development. At the same time, after the digitalization of the secondary battery, when people use the digital battery to supply power, they will not suddenly lose power during normal work, which will affect the work and cause certain losses; the battery can be used reasonably or scientifically, and the battery will not be used. Discharge and over-charge can effectively extend the service life of the battery; accurately display the battery data and provide data to the host, which can effectively control and process each state of the battery; there will be an alarm prompt for the final aging of the battery; Therefore, the battery has its own self-resolving ability; the digital battery system can be used to remotely monitor the battery and use reliable data for efficient energy management. Therefore, the digital battery also has a high promotion and application value. Digital battery related technology Because the digital battery has built-in smart chip, through the data exchange with the intelligent charger, the battery model identification, remaining capacity and cycle number display function can be realized, which greatly improves the performance and service life of the battery. Intelligent cadmium nickel battery series, intelligent hydrogen nickel battery series and intelligent lithium ion battery series will be an important development direction. However, the intelligent and non-intelligent cadmium nickel battery series and the hydrogen nickel battery series will coexist for a period of time until the intelligent battery completely replaces the non-intelligent battery. Therefore, the development of digital batteries should be started as soon as possible, in order to improve the level of China's battery industry as much as possible, and to synchronize with foreign countries. Through extensive research on foreign digital battery research related materials, and discussions with relevant experts and manufacturers, the author believes that the research and development of digital batteries should focus on the following aspects: (1) Relevant standards for digital batteries. Foreign digital batteries have initially formed certain industry standards, such as the communication protocol between digital batteries and other control devices. To be compatible with our digital batteries, we must fully understand the relevant standard protocols. If we can formulate our own perfect system standards, it will be more conducive to the development and formation of digital batteries in China. If there is a unified digital protocol, battery manufacturers can develop or entrust other companies to develop digital batteries with less investment and quicker results, and also increase the added value of battery products. A unified battery digitization protocol will help them reduce product variety, increase production and lower product prices. A unified battery digitization agreement will benefit all relevant vendors and achieve a win-win situation in the market. (2) Characteristics of batteries such as cadmium nickel, nickel hydride batteries and lithium ion batteries. Only by knowing the characteristics of these batteries in detail, can we detect and control various performance indicators, provide first-hand information for the digitization of batteries, and can also be related electronic devices such as intelligent charging controllers. The design and development provide reference. (3) Dynamic data acquisition and processing technology for digital batteries. Mainly collect data such as battery voltage, current, temperature, etc., and perform digital quantization processing to obtain accurate voltage, capacity, internal resistance, and temperature data for display on the LCD or for communication transmission. (4) Data communication technology. Data communication is an important part of the realization of battery digitization. The standard of communication of existing foreign digital batteries is: SMBusV2.0. After the dynamic data of the battery is processed, the data is transmitted continuously through the interface to the CPU of other electronic devices (or the host) through the transmission driver in a standard format. If the digital battery system is used, the host can take corresponding according to the current condition of the battery. Measures. (5) Intelligent charging control technology for digital batteries. Smart charging technology with digital batteries must be able to communicate with digital batteries and enable automatic fast charge control. At present, the advanced charger has been realized digitally and intelligently. The various operations of the charger are completed by the microprocessor, which can realize the battery type judgment, select the charging current according to the user's requirements, various filling determination methods, various protection measures, The charging capacity display of the battery, the simultaneous or sequential charging of multiple batteries, the sound and light prompts filled with the battery, etc., the charging mode can be constant current, constant current and constant voltage and the following pull negative pulse mode, which can increase the maintenance function of the battery. The battery life is improved by maintenance of the battery, and the mobile adapter can be directly powered by the AC adapter. Digital battery is a new topic in the development and application of secondary power. The advantages of digital battery are unmatched by other non-digital batteries. Its research and development and application will not only inject new vitality into the battery industry, but also people. The production and life provide a lot of convenience and have important practical significance. Rotary Chair,360 Rotating Chair,Folding Rotary Chair,Rotating Sofa Chair Wuyi Superior Leisure Products CO.LTD , https://www.easytcsuperior.com