How much do you know about the performance of batteries?

How much do you know about the performance of Lithium Battery?

A battery refers to a portion of the space in a cup, tank, or other container or composite container that contains an electrolyte solution and metal electrodes to generate current. With the advancement of technology, batteries generally refer to small devices that can generate electrical energy. Like solar cells. The performance parameters of batteries mainly include electromotive force, capacity, specific energy, and resistance.

(1) The open circuit voltage of the battery;
(2) Internal resistance of the battery;
(3) The working voltage of the battery;
(4) Charging voltage;
Charging voltage refers to the voltage applied by an external power source to both ends of a secondary battery during charging. The basic methods of charging include constant current charging and constant voltage charging. Generally, constant current charging is used, which is characterized by a constant charging current during the charging process. As charging progresses, the active substance is restored, the electrode reaction area continuously decreases, and the polarization of the motor gradually increases.
(5) Battery capacity;

Battery capacity refers to the amount of electricity obtained from a battery, commonly expressed in C and expressed in Ah or mAh units. Capacity is an important indicator of battery performance. The capacity of a battery is usually divided into theoretical capacity, actual capacity, and rated capacity.

The battery capacity is determined by the capacity of the electrodes. If the capacity of the electrodes is not equal, the capacity of the battery depends on the electrode with the smaller capacity, but it is never the sum of the positive and negative electrode capacities.
(6) The storage performance and lifespan of batteries;
One of the main characteristics of chemical power sources is the ability to release electrical energy when in use and store it when not in use. The so-called storage performance refers to the charging retention ability of secondary batteries. For secondary batteries, the service life is an important parameter for measuring the performance of the battery. A secondary battery undergoes one cycle of charging and discharging, which is called a cycle. Under a certain charging and discharging system, the number of charging and discharging cycles that a battery can withstand before its capacity reaches a certain specified value is called the service life of a secondary battery.