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Lithium-ion battery packs usually consist of one or several battery packs in parallel, and each battery pack consists of 3 to 4 batteries in series. This combination can meet the voltage and power requirements. However, cell balancing technology, a common configuration for this application, is usually not very effective, because if the capacity of one series cell does not match the other cells, it will reduce the capacity of the entire battery pack. The mismatch of battery capacity in lithium-ion battery balanci

Development status of core technology of power lithium-ion battery pack Lithium-ion battery packs are about to reach the technical bottleneck, and solid-state batteries and fuel-powered batteries will be commercialized. Innovative layouts should be used to solve the technical shortcomings of electric vehicles and ease users' mileage anxiety. Until now, the service life of lithium-ion batteries is still unsatisfactory. Battery technology is still the biggest bottleneck in the evolution of all electronic devic

The three important links in the production of ternary materials for lithium-ion batteries are mixing abrasives, high-temperature sintering, and crushing and decomposition. The control of each link and the performance of equipment will have a direct or indirect impact on the final product. Among them, grading, screening and packaging are the last links of ternary materials. Let's understand these links. ●Grading The particle size distribution of ternary lithium-ion battery materials will affect the specif

The important process parameters of hot-pressing shaping of cells are pressurization pressure, pressurization time and template temperature. Under suitable process parameters, there is almost no air inside the thick cell, the diaphragm and the pole piece are tightly bonded together, and the loose cell can become a hard block. In the process determination test, the test items include the gas permeability and thickness change of the diaphragm; whether the thickness of the cell meets the requirements for entering the

The principle of lithium-ion battery protection circuit The reason why the lithium-ion battery (rechargeable) needs to be protected is determined by its own characteristics. Since the material of the lithium-ion battery itself determines that it cannot be overcharged, overdischarged, overcurrent, short-circuited and ultra-high temperature charge and discharge, the lithium-ion battery components will always appear with a delicate protection board and a current fuse. The protection function of lithium-ion batterie

The meaning of coating Slurry coating is the next process after the preparation of the slurry. The important purpose of this process is to uniformly coat the slurry with good stability, good viscosity and good fluidity on the positive and negative electrode current collectors. The pole piece coating is of great significance to the lithium-ion battery pack, which is mainly reflected in the following points:(Lithium - Ion Battery Equipment) 1. It is of great significance to the capacity of the finished battery

There are two typical follow-up paths for lithium-ion battery recycling, cascade utilization or direct material recycling. 1. Cascade utilization and raw material recovery For retired power lithium-ion batteries, those who take the road of tiered utilization are to recycle materials after the tiered utilization; for direct material recycling, the batches are too small, there is no history to check, and the safety monitoring is unqualified, etc. The pursuit of economic benefits is the driving force behind c

The fast charging problem of lithium-ion batteries needs to be analyzed from two levels. From the cell level, the rate performance of lithium-ion batteries is restricted by the intrinsic transmission characteristics of the material matching system such as positive electrode/negative electrode/electrolyte on the one hand, and on the other hand. In terms of pole piece technology and cell structure design, the rate performance is also greatly affected. However, in terms of the most intrinsic carrier conduction and

Power lithium-ion battery aluminum shell packaging process The aluminum shell of the automotive power lithium battery is made of aluminum 3003, because this material is easy to process and form, high temperature corrosion resistance, good heat transfer and electrical conductivity. The power lithium battery aluminum shell (except the shell cover) of 3003 aluminum alloy can be drawn and formed at one time, and the welding process of the bottom of the box can be omitted for the stainless steel shell. 3003 is mai