Introduce the safety requirements of static lithium battery energy storage system

Analyzed the safety requirements of the static lithium battery energy storage system. On July 7, at the 2014 International Photovoltaic Industry Technology and Specification Development Forum, Mr. He Jianhua, the project manager of the VDE Shanghai office, published a presentation entitled 'Stop-type (non-mobile) lithium battery storage The keynote speech of 'Energy System Safety Requirements'. The following is the content of the conversation: He Jianhua: Good afternoon. What I want to talk about today is about the safety requirements of lithium battery energy storage systems. With the rapid development of renewable energy, energy storage systems have become more and more important. Relatively speaking, Germany is still a world leader in this field. Therefore, VDE has specially formulated certification specifications for lithium battery energy storage systems to meet the rising market demand in the future. What is the composition and framework of lithium-ion energy storage? Let's briefly analyze it. A typical lithium ion energy storage device is a 18650 cylindrical lithium battery. It may be dozens or even hundreds of lithium battery packs combined to form a battery module. The battery module and battery processing unit serve as the basic energy storage unit. Regarding the skills and methods of energy storage equipment, I just simply classified it, not a very standardized classification. There are generally three types of usage plans. The first is the application of small plans. Small planning applications and system equipment do not exceed 10 kilowatts. Of course, the capacity of the battery is determined according to the capacity. The top is a battery processing system, and the bottom is a system composed of multiple battery modules. The second type is medium-sized equipment. The structure of the battery module may be different from that of the small-sized battery module, but the overall composition is similar. The third type is large-scale planning equipment, which brings together various modules. At present, the lithium-ion energy storage system is also encouraged by the German national policy. The installed photovoltaic capacity in Germany has reached a certain level, and the space for further development is also restricted. Photovoltaic power generation, after all, is still an important motive for auxiliary power supply. This is related to the dynamic characteristics of talents, power generation, no light, no, the sun is good for hair, and more importantly, the sun is less and the hair is a bit less, so this time there will be a similar Reservoir, this is the energy storage system. Now, due to price and other factors, energy storage systems are not developing fast enough. From the perspective of the capability of energy storage system applications, for example, from the perspective of the entire large power grid, it is important that the grid shake can be controlled, and because of the load change, the changing power generation and grid frequency are also shaken and can also be adjusted. , Can increase the peak power demand of the grid, because the peak power load is very large, and the power system capacity is the same, but most of it is impossible to meet the requirements of power generation, and the traditional power generation system, how many kilowatt hours it has is related to the load, and Solar photovoltaic is no way to be passive, it is completely determined by the sun and climate. Therefore, in this case, the energy storage device can adjust and compensate for the function of the grid. Now in Germany, the application of small energy storage equipment is gaining momentum, which must be related to the current status of photovoltaic use in Germany. The government also strongly encourages energy storage in photovoltaic power generation systems. In fact, this is an inspiration for personal use. Another function is as an emergency power source. Regarding lithium battery energy storage application systems, relevant specifications are still being formulated. From this block diagram, it seems that the specification is still an energy storage device for personal use and small programs. One is about ionizing electrons, and the other is about manipulating electrons, which has a lot to do with the safety of laboratory equipment. The most important is the battery processing system and energy storage equipment, this specification is still being drafted. The other is related information and communication, which of course also meets the requirements of related products. IEC has a 60950 specification, and the other external connector VDE has a complex specification. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.