Why do some new energy vehicles have a cruising range of only two to three hundred kilometers, while others have a range of five to six hundred kilometers? Why some batteries can be used in cars, while others can only be used in small electronic products?
A cell refers to a single electrochemical cell containing positive and negative electrodes, which is generally not used directly. The composition of lithium battery is composed of battery cell + protection circuit board. The battery cell is a semi-finished product and cannot be used directly as a battery. It is only used to provide power. It needs to be equipped with a protection circuit and packaged to form a finished battery.
The batteries are divided into three types: aluminum shell batteries, soft pack batteries, and cylindrical batteries. Usually mobile phone batteries use aluminum shell cells, digital products such as Bluetooth mostly use soft pack cells, and laptop batteries use a series-parallel combination of cylindrical cells. The cylindrical batteries (18650 and 21700 models) and pouch batteries produced by Far East Battery are high-quality batteries that can be used in new energy vehicles and small household appliances.
The basic performance indicators of the battery include: voltage, capacity, energy, power, internal resistance, life, discharge rate, self-discharge, etc. If the internal resistance of the battery is too large, the service life of the battery will be reduced. Storage performance is an important parameter to measure the stability of the overall performance of the battery. Other performance parameters are important indicators to ensure the safe use of the battery. The protection board (or management system) is assembled into a battery pack together, which is the power source of the electric vehicle.
Of course, the birth of a good product is inseparable from continuous R&D investment and product upgrades. The finished products must also undergo strict testing and quality control. For example, Far East Battery has the top testing equipment in the industry. State-of-the-art testing equipment and material research and development laboratories escort the battery quality.