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(1) Baking Bake for 12 hours under the conditions of constant temperature and vacuum degree of -0.09MPa, the important purpose is to dry the moisture of the cell. (2) Liquid injection The battery cells after vacuum baking are injected with electrolyte in the glove box filled with Ar gas. The injection volume is different according to the design of the lithium-ion battery pack. The battery should be weighed before and after injection. The weight difference is the injection volume. This will determine whethe

1. Ordinary series charging At present, the charging of lithium-ion battery packs is generally performed by series charging, which is mainly because the series charging method is simple in structure, low in cost, and relatively easy to implement. However, due to the differences in capacity, internal resistance, attenuation characteristics, self-discharge and other performances between single lithium-ion batteries, when lithium-ion battery packs are charged in series, the single lithium-ion battery with the small

Frequent fast charging will have a certain degree of impact on the batteries currently carried by electric vehicles, which varies according to the type of battery. At present, electric vehicles are generally equipped with lithium-ion batteries and lead-acid batteries. Among them, lithium-ion batteries also include lithium iron phosphate batteries and ternary lithium-ion batteries. Different types of batteries need to be analyzed differently. Lead-acid batteries are currently mainly used in miniature electric veh

Cascade utilization and dismantling recycling are important ways to recycle decommissioned lithium-ion batteries. (1) Cascade utilization can realize the secondary application of decommissioned power lithium-ion batteries in the field of energy storage. Car companies and battery factories have inherent advantages, but they also face the dilemma of high recycling costs for retired batteries. At the same time, this approach has extremely high requirements on battery consistency, and some demonstration projects are

We all know that lithium-ion batteries, as the power engine of new energy vehicles, determine the endurance and mileage of new energy vehicles, and the quality of their craftsmanship directly affects the performance of the new energy vehicle market. To this end, the company is also trying to use more advanced processing technology, such as laser cutting technology, to improve the performance of lithium-ion batteries. Laser cutting technology has the characteristics of controllable processing, high efficiency and

The performance of lithium battery stocks is booming, which is a highlight of the 2016 interim report season. At present, many lithium battery companies such as Tianqi Lithium, Dofluoroduo, Shanshan Co., Ltd., and Xinzhou Bang have announced their interim reports, and the overall performance growth rate is good. Research institutions generally predict that the performance of lithium-ion listed companies in the second half of this year will continue to rise. Over 70% of lithium battery stocks report half-yearly n

Whether domestic or foreign, electrification is now a major trend in the development of the automotive industry. However, the development speed and penetration rate of electric vehicles are not satisfactory. When it comes to the bottleneck factor, the limitation of battery charging technology is inseparable. The editor will take you today to take a look at the new trends in this technology in the world. Can battery charging technology limit overcharging and wireless charging to solve electric vehicle mileage anx

In recent years, the exposure of many electric vehicle fire incidents has made people pay more and more attention to the safety of electric vehicles, especially lithium-ion batteries. Of course, this does not mean that the safety of electric vehicles is poor. Ordinary gasoline vehicles are also prone to fire incidents. Especially in summer, as long as you pay attention, you will find that spontaneous combustion incidents of gasoline vehicles are not rare. In terms of safety design, similar accidents are prevented.

There are three important aspects of "fraudulent subsidy" behavior, namely, the false report of the certificate without production, the inconsistency of the key parameters of the product and the "Notice", and the reuse of the battery after disassembly and assembly to apply for subsidies. At present, the promotion and application of new energy vehicles in my country has achieved remarkable results, and the industry is developing rapidly. At the same time, as an emerging industry, some phased p