Technical Knowledge

Graphene batteries are unlikely to replace lithium-ion batteries in the foreseeable future. On the one hand, the technology is not yet mature. On the other hand, the cost will not come down. In addition, there is still a lot of work to be done in terms of security, stability and many other aspects. Moreover, even if graphene batteries are actually made and applied on a large scale, it may not be able to be applied to electric vehicles to replace the currently popular lithium-ion batteries. Special has many advantag

What restricts the convenience of charging is that the charging speed is too slow. It has two constraining effects: Slow charging means losing valuable time for EV owners, which is a direct cost. The slow charging speed means that the service efficiency of renting a site to open a charging station is low, and the input and output are not cost-effective, which indirectly restricts the popularity of charging stations. Two perspectives of fast charging technology for vehicle lithium-ion batteries We often

The production process of Fe-Li-ion battery separator is mainly divided into dry stretching and wet stretching. The many characteristics of lithium-ion battery separators have put forward special requirements for their production process, and the production process includes raw material formula and rapid formula adjustment, micropore preparation technology, independent design of complete sets of equipment and other processes. Wet production process, also known as phase separation method or thermally induced phas

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

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

(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