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When the lithium-ion battery voltage is higher than 3.0V, it enters the second stage, the high current constant current charging stage (CCFastcharge). Since the lithium-ion battery has been pre-charged in the first stage, its state has been relatively stable (the purpose of the pre-charge stage can be understood in this way~ but it is not rigorous). Therefore, in the second stage, the charging current can be appropriately increased. According to different batteries, the current can vary from 0.1C to several C, wher

Balanced charging technologies commonly used in the balance principle of lithium-ion battery protection boards include constant shunt resistance balance charging, on-off shunt resistance balance charging, average battery voltage balance charging, switched capacitor balance charging, step-down converter balance charging, inductance balance charging, etc. When charging a group of lithium-ion batteries in series, ensure that each battery is charged equally, otherwise the performance and life of the entire group of bat

Dry Process of Fe-Li-ion Battery Separator The dry process can be subdivided into a uniaxial stretching process and a biaxial stretching process. The dry uniaxial stretching process is to prepare a high-oriented polypropylene or polyethylene film with low crystallinity by producing hard elastic fibers, and obtain a film with high crystallinity during high temperature annealing. The film is first stretched at low temperature to form micro-defects, and then at high temperature, the defects are pulled apart to form

Facing the development needs of the commercialization of power lithium batteries in the new energy era, major companies and manufacturers are eager to find a solution that can fundamentally "improve quality and reduce costs" to break through the application limitations of existing manufacturing and processing technologies .(High Speed Slitting Machine)       Among them, in the processing of the tabs of power lithium batteries, the bottlenecks of traditional hardware die-cutting t

There are arcs, wavy edges, warped edges, etc. after the lithium battery pole pieces are cut. These conditions may be caused by a variety of reasons. Please compare and exclude:       1. The roller surface of the slitting machine is not handled well and the process design is not reasonable. Causes: horizontal slippage (commonly known as left and right swimming), wrinkling (unbalanced pulling of the material), roll off (the material is too light and thin) on the roller during the slitting p

The protection function of the lithium-ion battery is usually completed by the protection circuit board and the PTC. The protection board is composed of electronic components. It can accurately monitor the voltage of the battery cell and the current of the charging and discharging circuit at all times in the environment of -40 ° C ~ + 85 ° C, and timely Control the on-off of the current loop; the important use of PTC is to protect in high temperature environment to prevent the battery from burning, explosio

The three important links in the production of ternary cathode materials for lithium-ion batteries are abrasive mixing, high temperature sintering, and crushing and decomposition. The control of each link and the performance of the equipment will directly or indirectly affect the final product. Among them, grading, screening and packaging are the last links of ternary materials. Let's understand these links.(Lithium - Ion Battery Equipment) ●Grading The particle size distribution of ternary lithium-ion ba

Performance comparison of lithium and hydrogen fuel powered lithium batteries. In this field, lithium-ion battery electric vehicles are well-deserved protagonists, but frequent accidents often make people sweat. Meanwhile, the future of the increasingly aggressive hydrogen fuel is uncertain. It remains to be seen whether lithium-ion batteries or hydrogen fuel can carry the flag and help new energy become a port for wind energy. Performance Comparison of Lithium and Hydrogen Fuel Powered Lithium Batteries From

The power lithium battery is the core of electric vehicles and the only source of driving energy for pure electric vehicles. It is directly related to the power performance and endurance of electric vehicles, and is also directly related to the safety of electric vehicles. From the perspective of the cost structure of new energy vehicles, battery drive systems account for 30-50% of the cost of new energy vehicles. Since the birth of electric vehicles, power lithium battery technology has been restricting the practi