During the constant current charging and discharging process of the battery, the voltage is not constant.
During constant current charging, the voltage changes like: increasing, stable, increasing (when it reaches a certain level, it can no longer be charged, and if recharged, it is called overload and may explode). It can be seen that during constant current charging and discharging, the voltage has a stable process, and this stable value is the charging and discharging platform.
The stable value is not an absolute level, but the higher the level the better, and the longer it lasts the better. Because using a battery means using the period when the voltage is stable, not the period where the voltage is constantly changing.
Storage requirements:
In an environment with a temperature of 20 ± 5 ℃ and humidity not exceeding 50%, corrosion of aluminum foil by airand water vapor should be avoided during transportation.
This product is divided into two types, A and B. The main characteristics of each are: the appearance of type A is black, the conventional coating thickness is 4-8μm on both sides and the conductive performance is more remarkable; the appearance of type B is light gray, and the conventional coating thickness is 2-3μm on both sides. Fewer welding layers can be done in the cladding area and the cladding machine can identify skip gaps.
Type B (gray) carbon coated aluminum sheet can be ultrasonic welded directly in the coating area. It is only suitable for soldering laminated battery tabs (up to 2-3 layers of pole pieces), but the power and time of ultrasound require fine tuning.