Characteristic performance development analysis of lithium battery manufacturers

Lithium battery manufacturers provide core knowledge. This article describes in detail. Battery capacity test methods. For lithium-ion battery charging requirements (GB/T182872000), first charge with constant current, that is, the current is constant, and the voltage of the lithium battery gradually increases with the charging process. When the lithium battery terminal voltage reaches 4.2V (4.1V), change the constant current charging to constant voltage charging. If the voltage of the lithium battery is constant, its charging current will gradually decrease as the charging process continues, and when the lithium battery charging current decreases When it is as small as 0.01C, it is considered that the charge is terminated. After shelving, discharge at a constant current of 0.2C5A to the termination voltage of 2.75V. The standard requires that the discharge time of lithium batteries should be ≥5h. The characteristics and advantages of lithium battery manufacturers should be determined according to the capacity of the battery , There is no unified specification. The larger the battery capacity, the larger the volume. The weight, many devices now require large capacity and lighter lithium batteries, such as electric vehicles, which used to use lead-acid batteries, and now many electric vehicles have become lithium batteries Because the lithium battery has large capacity, light weight, and small size. The charge and discharge current, the charge and discharge current of the lithium battery, are determined according to the power of the device, the electric power formula, Pu003dUI. On the basis of constant voltage, the device’s The greater the power, the greater the current that needs to be output.