With the progress of society and the popularity of digital products, lithium batteries are gradually being paid attention to as the important power for energy in digital products and high-end instruments. It is necessary to recognize the advantages and disadvantages of lithium batteries, and the author sums up a few points with people.
The main advantages of lithium batteries are:
The voltage platform of lithium battery is high: the average voltage of the single cell is 3.7V or 3.2V, which is equal to the series voltage of 3 Ni Cd batteries or Ni MH batteries, which is easy to make up the battery power supply group.
The lithium-ion battery has a high energy density relative to the battery. With high storage energy density, it has reached 460-600Wh/kg, which is about 6-7 times that of lead-acid batteries.
Compared with lead-acid batteries, lithium batteries are light in weight and the same volume is about 1/5-6 of lead-acid products.
Lithium battery life is relatively long, the service life can reach more than 6 years, the lithium phosphate as the positive pole of the battery 1CDOD filling, can be used 1000 records;
It has high power bearing capacity, in which the ferroelectric lithium ion lithium ion battery for electric vehicle can reach the capacity of 15-30C charge and discharge, and is convenient for high strength starting and accelerating.
Low self discharge rate and no memory effect.
Lithium battery is highly adaptable to high temperature and low temperature. It can be used in the environment of -20 C --60 C, and can be used in the environment of -45 C.
Environmental protection, regardless of production, use and scrap, does not contain or produce any toxic and harmful heavy metals and substances such as lead, mercury and cadmium.
Disadvantages of lithium batteries
Lithium batteries are safe and dangerous to explode.
Lithium batteries with lithium cobaltate can not discharge at high current, and the safety is poor.
All lithium batteries need to be protected from overcharging and overdischarging.
The production requirements are high and the cost is high.