How many years can a ternary lithium battery last?

In nature, lithium is light, small metal atomic mass * and its atomic weight of 6.94 g/mol, rho = 0.53 g/cm3.Lithium chemistry and lively, easy to lose electrons are oxidation of Li +, so the standard electrode potential negative, is 3.045 V, the electrochemical equivalent * small, 0.26 g/Ah, these characteristics of lithium determines it is a very high specific energy of materials. Ternary lithium battery refers to the three transition metal nickel cobalt manganese oxide as the anode material of lithium secondary battery. It fully integrated the nickel cobalt acid lithium good cycle performance, high capacity of acid lithium and lithium manganese acid of high security and low cost etc., using molecular hybrid, doping, coating and surface modification methods such as synthesis of nickel cobalt manganese compound lithium oxide embedded multielement synergy. Is now widely research and application of a lithium ion rechargeable battery.

Lithium battery life refers to the battery in use after a period of time, capacity attenuation for the nominal capacity (room temperature 25 ℃, standard atmospheric pressure, and in the battery capacity of 0.2 C discharge) of 70%, can think life is terminated. In the industry generally to lithium battery full cycle times to calculate the cycle of life. In the process of using, lithium battery irreversible electrochemical reactions can occur within the led to the decrease of the capacity, such as the electrolyte decomposition, the inactivation of active material, is the collapse of the cathode structure embedded in lithium ion and reduce the number of embedded off and so on. Experiments indicate that leads to a higher ratio of discharge capacity attenuation, faster if the discharge current is low, the battery voltage will close to balance, can release more energy

Ternary lithium battery in the field of street lamp is about 800 times the theory of the battery life cycle, the applied theory of base station battery life is greater than 1600 times. The cycle of ternary lithium battery service life in more than 2000 times, and more than 1000 times or so capacity will reduce to 90% of the original capacity. In the commercialization of rechargeable lithium batteries belong to medium to high. lithium iron phosphate is about 2000 times, and lithium titanate reportedly can reach 10000 cycles. The current mainstream of battery manufacturers in the production of three yuan batteries specifications promised more than 500 times in the book (under the condition of standard charge and discharge), but the batteries in group with battery pack after due to the consistency problem, mainly is the voltage and internal resistance can't be exactly the same, the cycle life of about 400 times. Manufacturers recommend using SOC window is 10% ~ 90%, it is not recommended for deep cycles, or you will to cause irreversible damage to the battery is the cathode structure, if can be calculated by shallow filling, cycle life of at least 1000 times. In addition, the lithium battery if often to devolve electricity at high rate and high temperature environment, the battery life can break down to less than 200 times.

According to the technical level of the ternary lithium batteries, if used properly, the electric cars can use more than 5 years at least. If use undeserved, 2-3 years of lithium battery life is attenuation was finished.

The so-called used properly or not, basically be to see whether can abide by the principle of shallow filling, do not overuse.

Brief introduction:

The ternary polymer lithium battery is correct material using lithium nickel manganese cobalt ternary cathode material of lithium-ion batteries, lithium ion batteries. There are many kinds of the anode materials, mainly include cobalt acid lithium, lithium manganese acid lithium, nickel, ternary material, lithium iron phosphate, etc. The batteries of the ternary materials instead of before the widespread use of cobalt acid lithium batteries, widely used in the field of laptop batteries.

Ternary polymer lithium battery parameters:

Nominal capacity: 1250 mAh

Sustained current standard discharge: 0.2 C

Sustained current biggest discharge: 1 c

Discharge: - 10 ~ 60 ℃

Product size: 52 mm MAX9.5 * 35 *

Finished product resistance: 150 m or less Ω

Lead models: the marking UL1007 / # 24, line length 55 mm

Protect parameters: the overcharge protection voltage/each string of 4.325 + / - 0.025 V

Discharge voltage protection 2.5 + / - 0.05 V

Flow value: 2 ~ 6 a or 3-8 a

The ternary polymer lithium battery performance:

In a relatively balanced capacity and safety of materials, good cycle performance in normal cobalt acid lithium, early due to technical reasons the nominal voltage is only 3.5 3.6 V, limited in scope, but so far, as incremental improvements were made in the formulation and perfect structure, nominal voltage of battery is 3.7 V, on the capacity has reached or exceeded cobalt acid lithium batteries level.

The ternary polymer lithium battery status:

The five largest batteries brand SANYO, PANASONIC, SONY, LG, SAMSUNG has launched three yuan material of batteries, a considerable part of the laptop battery line with ternary material of batteries to replace the previous cobalt acid lithium batteries, SANYO, SAMSUNG pillar has halted cobalt acid lithium batteries battery to three yuan batteries manufacturing, small high ratio of power battery at home and abroad most use ternary cathode material.

According to the technical level of the ternary lithium batteries, if used properly, the electric cars can use more than 5 years at least.

If use undeserved, 2-3 years of lithium battery life is attenuation was finished.

The so-called used properly or not, basically be to see whether can abide by the principle of shallow filling, do not overuse.

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