Advantages and disadvantages of lithium battery

Under the condition of the same voltage and the same capacity, if lead-acid battery is 30 kg, then the weight of the lithium battery is 10 kg, which is probably about one third of the lead-acid battery, so the lithium battery is very convenient for transportation.

Again under the same volume, the capacity of lithium-ion batteries density is much larger than lead-acid battery, lithium battery capacity is 20 ah, for example, only 10 ah lead-acid battery capacity.

Lithium battery fully charge and discharge times to 800 times or so, no memory effect, lead-acid battery is only 300 times or so, memory effects. May light has this cycle count you don't understand, so to speak, if once every three to four days for the charge and discharge cycle, the life of the lithium battery can to eight years, and the life of the lead-acid battery can only to 3 years or so.

Error using pose a safety hazard: due to lithium ion battery material is very active, if use error will appear electrolyte decomposition, combustion, and even major accidents of explosion.

Different discharge rate is affected by the available capacity of the battery.

To over charge and discharge will cause irreversible damage to the battery: in view of the above shortcomings, are generally large capacity lithium battery protection device is adopted to monitor the use of the battery.

Low temperature significantly worse battery performance, and the platform of discharge is decreased, the output power reduced, availability attenuation, etc.

The ternary polymer lithium battery is correct material using nickel cobalt manganese acid lithium (Li (NiCoMn) O2) ternary positive electrode material of lithium battery, the ternary composite cathode material precursor products, is the cobalt nickel salt, salt, manganese salt as raw materials, in the proportion of nickel cobalt manganese can according to the actual need to adjust, the ternary material cell relative to the anode cobalt acid lithium batteries high safety, but the voltage is too low, use mobile phones (cell phones as general at around 3.4 V voltage) will feel the lack of obvious capacity.

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 been reached or exceed cobalt acid lithium battery level.

Since early 2014, the ternary lithium battery materials continuously modified, cycle number increases, the increase cost appropriately, can reach more than 1500 times, and the ternary material of lithium battery safety performance are also continue to improve, more and more to be near the lithium iron phosphate. Nearly two years the emergence of new ternary material, aluminum nickel and cobalt in the battery manufacturing process on the environment the demand is higher, but its stability and security to further improve, for many factory accepted, trial-produce.

1, high voltage platform. Voltage platform is an important index of the battery energy density, determines the basic performance and the cost of battery, so the material selection of the battery, have important meaning. Voltage platform is higher, the greater the specific capacity, must be the same size, weight, and even the same ampere hour battery, high ternary material lithium battery voltage platform range further. Ternary material voltage platform is significantly higher than that of lithium iron phosphate, line can reach 4.2 v, discharge platform can achieve 3.6 or 3.7 volts.

2, high energy density

3, high tap density

The ternary lithium battery disadvantages:

1, poor security

2, high temperature resistance is poor

3, poor life

4, high-power discharge is poor

5, toxic elements (ternary lithium battery power after the charging and discharging temperature rise sharply, release oxygen after high temperature is extremely easy to burn)

Lithium battery high voltage platform: monomer battery an average voltage of 3.7 V or 3.2 V, is approximately equal to three nickel cadmium battery or nickel metal hydride batteries in series voltage, easy to battery power team;

Lithium battery light weight than the level of lead-acid battery, the same volume under the weight of about 1/5 of the lead acid products, 6;

Lithium battery service life is relatively long, service life can reach more than 6 years, lithium iron phosphate for positive cells in 1 cdod charged to put, can use the record of 1000;

With high power tolerance, including electric cars with lithium iron phosphate lithium ion battery can reach 15 to 30 c the ability to charge and discharge, is advantageous for the high strength of starting and accelerating;

Lithium battery high and low temperature adaptability is strong, can be in - 20 ℃, 60 ℃ under the environment of use, through technology on the processing, can be used in - 45 ℃ environment;

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