Nugget pushes a new generation of power batteries to charge 70% of the battery in 1.7 minutes and normal use of minus 40 degrees Celsius

High rate fast charge

    According to the data provided by the alliance, this 6Ah power battery adopts 100C large rate charging, only needs 6S to charge about 16% of the capacity, 1.7 minutes can fill more than 70% of the capacity, its charging speed can be The speed of refueling traditional fuel vehicles is quite high. Compared to supercapacitors, the large rate characteristics of lithium-ion batteries have been at a disadvantage. If the charging efficiency is achieved in practical applications, it means that lithium-ion battery will break in many applications where fast charging is required. Only supercapacitors can be used. Limitations.

In addition, in northern China, due to the very low winter temperatures, new energy vehicles are extremely limited in their promotion due to their unbearable low-temperature batteries, and the low temperature test of the power battery of the Nugget has shown that The charge and discharge capacity of the battery at -40°C can reach more than 60% of the rated capacity, and after 400 charge and discharge at -20°C, the capacity attenuation does not exceed 3%. This means that lithium-ion batteries can also be used on a large scale in extreme temperatures such as in Northeast China and even in space.

According to the R&D personnel of the League, the battery product was mainly renovated from the structural design. First, the laminated cell structure and electrode design were adopted, and the diffusion distance of lithium ions was shortened through high-precision process control. Improve the lithium ion diffusion rate, is conducive to the rapid charge and discharge of the battery; Second, the use of flat flexible packaging battery structure, making the battery temperature difference is minimized, the battery has a larger surface area, more conducive to cooling after warming, reduce the battery heat The risk of losing control is that the battery is safer in operation. In addition, the use of a structure with ears on both sides increases the width of the electrode that draws current from the positive and negative electrodes, and the current distribution is more uniform, making it easier to achieve high power output of the battery.