First of all, let's understand what is lithium iron phosphate battery and ternary lithium battery.
Both lithium iron phosphate battery and ternary lithium battery are a kind of lithium battery. Due to the different physical structure of the battery, the electrical parameters are also different, so there will be lithium iron phosphate battery in the selection Which is better, ternary lithium battery?
- lithium iron phosphate battery
The number refers to a cylindrical battery with a diameter of 32mm and a height of 70mm
During the charging process, part of the lithium ions in the lithium iron phosphate come out, are transferred to the negative electrode through the electrolyte, and are embedded in the carbon material of the negative electrode; at the same time, electrons are released from the positive electrode and reach the negative electrode from the external circuit to maintain the balance of the chemical reaction.
During the discharge process, lithium ions come out of the negative electrode and reach the positive electrode through the electrolyte. At the same time, the negative electrode releases electrons and reaches the positive electrode from the external circuit to provide energy for the outside world.
Under the condition of chemical reaction in the battery, the gas generated inside will first gather in the vent tube, which is conducive to the dispersion of gas inside the battery, and the battery cell will never explode.
The iron-lithium battery cylindrical iron-lithium battery introduces a vent tube device, which effectively solves the safety problems caused by the high temperature of the battery cell under extreme conditions such as overcharge, short circuit, and collision.
Fe-lithium battery cell safety valve When the internal pressure reaches 1.8Mpa, the safety valve will open and the gas will be discharged to avoid the risk of explosion.
The 1C cycle life of lithium iron phosphate batteries generally reaches 2,000 times, or even more than 3,500 times, while the energy storage market requires more than 4,000-5,000 times, guaranteeing a service life of 8-10 years, which is higher than the 1,000-plus cycles of ternary batteries Life, while the cycle life of long-life lead-acid batteries is about 300 times.
2. ternary lithium battery
means 18mm in diameter and 65mm in length. The model of the No. 5 battery is , with a diameter of 14 mm and a length of 50 mm. Generally, batteries are used more in industry, and rarely used in civilian use. The common ones are more used in notebook batteries and high-end flashlights.
The ternary composite cathode material is made of nickel salt, cobalt salt, and manganese salt. The ratio of nickel, cobalt, and manganese in it is adjusted according to actual needs. Compared with lithium cobalt oxide, the battery with the positive stage is a ternary material, and the battery is safer. High performance, its shortcoming is that the voltage is too low.
Node nominal voltage is generally: 3.6V or 3.7V
The minimum end-of-discharge voltage is generally: 2.75V, lower than this voltage will easily lead to a serious drop in battery capacity or even scrapping
Maximum charge termination voltage: 4.20V
Diameter: 18±0.2mm
Height: 65±2.0mm
Capacity: above mAh, conventional capacity is mAh-mAh
Advantages of lithium iron phosphate battery:
If you want to learn more, please visit our website Lithium-ion battery cells.
Related articles:Pressure measurement, Part 1: An overview
Electric MCC Power Distribution Equipment Cabinet Panel
1. The lithium iron phosphate battery has a long life, and the single cycle life is more than times. Under the same conditions, lithium iron phosphate batteries can be used for 7 to 8 years.
2. Safe to use. The lithium iron phosphate battery has undergone strict safety tests and will not explode even in a traffic accident.
3. Fast charging. Using a dedicated charger, 1.5C charging for 40 minutes can fully charge the battery.
4.The lithium iron phosphate battery is resistant to high temperature, and the hot air value of the lithium iron phosphate battery can reach 350 to 500 degrees Celsius.
5. The lithium iron phosphate battery has a large capacity.
6. Lithium iron phosphate batteries have no memory effect.
7. Lithium iron phosphate battery is environmentally friendly, non-toxic, non-polluting, with a wide range of raw materials and cheap prices.
The disadvantages of lithium iron phosphate batteries are:
1. The tap density of the positive electrode of lithium iron phosphate battery is small, and the density is generally around 0.8 to 1.3. Big size.
2. Poor electrical conductivity, slow diffusion of lithium ions, and low actual specific capacity during high charge and discharge.
3. The low temperature performance of lithium iron phosphate battery is poor.
Advantages of ternary lithium battery
1. High voltage platform: The voltage platform of ternary materials is obviously higher than that of lithium iron phosphate, the high line can reach 4.2 volts, and the discharge platform can reach 3.6 or 3.7 volts.
2. High energy density: The higher the voltage platform, the larger the specific capacity, so the battery with the same volume, weight, or even the same ampere-hour, the ternary material lithium battery with a higher voltage platform has a longer battery life.
3. The tap density is high, which is higher than that of lithium iron phosphate batteries.
Disadvantages of ternary lithium battery
1. The safety performance is poor, and it is difficult for a ternary battery with a large capacity to pass safety tests such as acupuncture and overcharge.
2. Poor high temperature resistance, unstable structure at high temperature, resulting in poor high temperature safety, and high pH value can easily cause monomer flatulence.
3. Short cycle life and poor high-power discharge.
4. The elements are poisonous. The temperature of the ternary lithium battery rises sharply after high-power charging and discharging, and the release of oxygen after high temperature is extremely easy to burn.
Summary: lithium iron phosphate battery and ternary lithium battery have their own advantages and disadvantages. lithium iron phosphate battery has a long service life and high temperature resistance. ternary battery is relatively low temperature resistant and small in size. Therefore, our company recommends using iron phosphate in hot areas For lithium batteries, ternary lithium batteries can be used in cold areas. If the large battery pack exceeds 200AH, lithium iron phosphate batteries should be used. Safety first!
Contact us to discuss your requirements of INR Cells. Our experienced sales team can help you identify the options that best suit your needs.
Comments
0