In today's highly developed science and technology, a variety of high technology appears in our lives, so do you understand the lithium-ion battery pack that these high technologies may contain? With the rapid development of lithium-ion battery packs driven by the new energy vehicle industry, lithium-ion battery packs have gradually become mainstream, and people are paying more and more attention to lithium-ion battery packs.
I. Introduction to the classification of lithium-ion battery packs
According to the internal material, lithium-ion battery pack is divided into two categories: lithium metal battery pack and lithium ion battery pack; lithium ion battery pack and lithium ion battery pack.
According to the appearance of lithium-ion battery pack: square lithium-ion battery, cylindrical lithium-ion battery ;
According to the material of the lithium-ion battery pack: aluminium-cased lithium-ion battery, steel-cased lithium-ion battery, flexible packaging battery;
Lithium-ion batteries are also divided into two categories: non-rechargeable and rechargeable.
Depending on the material of the positive and negative electrodes of the lithium ion battery pack, these are lithium-acid (LiCoO2) batteries or lithium manganate (LiMn2O4), lithium iron phosphate ion batteries and disposable manganese dioxide lithium ion batteries;
Lithium ion battery packs are divided into different performance and use aspects: disposable lithium ion batteries - lithium manganese batteries - button 3 volt batteries, high capacity lithium ion batteries for digital products for mobile phones, high rate lithium ion battery cells - high temperature lithium ion batteries for use in electric vehicles, power tools and model aircraft - mining lamps, indoor lighting, built-in back-up power for machines, warm lithium ion batteries; - outdoor environments.
2, lithium-ion battery pack application areas analysis
Currently, lithium-ion battery packs are importantly used in consumer electronics, new energy vehicles power supply and energy storage. New energy vehicles and energy storage systems demand far more battery capacity than lithium-ion batteries, and as the industry develops, the proportion of lithium-ion batteries will continue to be added.
According to the field of electric energy storage power supply, it includes: large solar/wind energy storage system, power grid peaking power supply, special power dedicated uninterruptible power supply system, integrated power supply system, PV off-grid and grid-connected energy storage power plant system.
Depending on the material of the positive and negatiAccording to the field of mobile communication power supply, it includes: outdoor integrated base station lithium-ion battery power supply, edge network base station lithium-ion battery pack power supply, non-physical site lithium-ion battery backup power supply, communication building 336VHVDC data centre backup power supply, renewable energy base station power supply waiting.ve electrodes of the lithium ion battery pack, these are lithium-acid (LiCoO2) batteries or lithium manganate (LiMn2O4), lithium iron phosphate ion batteries and disposable manganese dioxide lithium ion batteries;
According to the new energy storage power supply, important ones include: solar street lights, starter power, electric tools, electric toys, electric models, model aircraft and electric robots.
According to the special aerospace special power supply applications, there are important power supplies: power supplies for large ships, power supplies for special spacecraft, power supply systems for special spacecraft, special armor and power supplies for large civilian excavation equipment.
3, lithium-ion battery pack production process details.
As we all know, the production process of lithium-ion battery packs is very complex. After all, the safety performance of lithium-ion battery products is directly related to the life and health of consumers. The details are as follows: material preparation - homogenisation - coating - rolling - slitting - baking - rolling - shell - laser welding - baking - injection - pre-treatment filling - sealing - cleaning - ageing - full inspection - storage - shipment. The production process for lithium-ion battery packs is not quite consistent with each manufacturer, but most are inextricably linked to these segments.
Objectively speaking, the production process of lithium-ion battery packs is divided into three parts, one is the production of the cells, another is the production of the battery cells and the third is the battery components. In the production process of lithium-ion battery packs, the production of electrodes is the basis, the production of battery cells is the core, and the battery assembly is related to the quality of the finished lithium-ion battery. The specific steps in the lithium-ion battery pack production process include positive electrode slurry stretching, negative electrode stretching slurry, positive electrode cells, negative electrode cells, steel case assembly, liquid injection and testing as well as packaging.
As can be seen, each production step in the lithium-ion battery pack production process is closely related to product quality and safety. Each step of the lithium-ion battery pack production process must be strictly and carefully managed to improve the safety performance of the lithium-ion battery pack products.
