subject: the basic performance of the battery [print this page] Li-ion battery development history Li-ion battery development history
Lithium and lithium-ion batteries developed in the 20th century a new type of high-energy batteries. This battery is a lithium metal anode, cathode with MnO2, SOCL2, (CFx) n so on. 70 years into practical use. Because of its high energy, battery voltage high, wide working temperature range, storage and long lifetime have been widely used in military and civilian Xiaoxingdianqi, such as mobile phones, portable computers, camcorders, cameras, etc., hp Laptop Batteryibm Laptop Battery instead of the traditional battery.
3, lithium-ion battery development prospects
Lithium-ion battery with its unique performance advantages in portable appliances such as portable computers, cameras, mobile communications are widely used. At present the development of large-capacity lithium-ion battery electric vehicles beginning in the trial, expected to become a 21st century electric car one of the main power supply, and in the satellite, aerospace and energy storage terms applied.
4, the basic performance of the battery
(1) open circuit voltage of the battery
(2) the battery internal resistance
(3) battery voltage
(4) The charging voltage
Secondary battery charging voltage is in charge, the external power supply increases the voltage across the battery. The basic method of time-honored charge current charging and constant voltage charging. Generally use constant current charging, characterized the process of charging when the charge current constant. As the charging progresses, the active substance is recovered, the electrode reaction area is shrinking, the electrical polarization gradually increased.
(5) battery capacity
Battery capacity is the amount of power from the battery was commonly used C, units used Ah or mAh that. Capacity is an important indicator of battery performance. Battery capacity is usually divided into theoretical capacity, practical capacity and rated capacity.
The capacity of the battery capacity of the decision by the electrodes, if the electrode capacity varies depending on the capacity of the battery capacity of the small electrode, but it is not the sum of positive and negative capacity.
