Advantage
1. High energy. It has a high energy density of 460-600Wh/kg, which is about 6-7 times higher than that of lead-acid batteries.
2. Long service life, service life can reach more than 6 years, lithium ferrous phosphate as positive electrode battery 1C (100% DOD) charge and discharge, there are 10,000 usable records;
3. High rated voltage (3.7V or 3.2V) equals the series voltage of three nickel-cadmium or nickel-hydrogen rechargeable batteries, which makes it easy to form battery power supply. Lithium batteries can adjust the voltage to 3.0V through a new technology of lithium battery voltage regulator to suit the use of small appliances.
4. It has high power endurance, and lithium iron phosphate lithium ion batteries for electric vehicles can achieve 15-30C charging and discharging capacity, which facilitates high-strength start-up and acceleration.
5. The self-discharge rate is very low, which is one of the most outstanding advantages of the battery. Generally, it can be less than 1%/month, less than 1/20 of the Ni-MH battery.
6. Light weight, about 1/6-1/5 of lead-acid products in the same volume;
7. High and low temperature adaptability, can be used in - 20 C - 60 C environment, after processing, can be used in - 45 C environment;
8. Green environmental protection, regardless of production, use and scrap, does not contain or produce any toxic and harmful heavy metal elements and substances such as lead, mercury and cadmium.
9. Production basically does not consume water, which is very advantageous to our country which is short of water.
Specific energy refers to the energy per unit weight or volume. Specific energy is expressed in Wh/kg or Wh/L. W h is the unit of energy, W is the watt, h is the hour, kg is the kilogram (unit of weight), L is the liter (unit of volume).
shortcoming
1. Lithium-ion batteries have poor safety and are in danger of explosion.
2. Lithium-ion batteries with lithium cobalt oxide can not discharge at high current, which is expensive and unsafe.
3. Lithium-ion batteries should be protected from overcharging and discharging.
4. High production requirement and high cost.
5. Limited use conditions, high and low temperature use is dangerous.