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About the advantages and disadvantages of lithium battery is introduced

by:Vglory      2020-12-05
Source: 2020 - 03 - 25 11:32 hits: once the advantages of the advantages and disadvantages of lithium-ion battery lithium battery 1. The lithium battery has a high platform, a single battery voltage to an average of 3. 7 v or 3. 2 v, is approximately equal to three pieces of nickel cadmium battery or nickel metal hydride batteries in series voltage, is advantageous to the formation of battery power. 2. Compared with batteries, lithium batteries with higher energy density. Has the high energy storage density, 460 - 600 wh/kg, which is about 6 - of lead-acid batteries Seven times. 3. Compared with lead-acid batteries, lithium battery weight is lighter, 1/5 of the lead acid products, at about the same volume 6. 4, lithium battery life is longer, service life can reach more than 6 years, lithium iron phosphate as the positive battery with one cdod charge and discharge, has a record with 1000. 5. The electric car with iron phosphate lithium-ion battery with high power capacity, can reach 15 - 30 c of charge and discharge capacity, facilitate high strength starting and accelerating. 6, low self-discharge rate, no memory effect, often used in daily electronic products of power supply. 7, lithium battery of high and low temperature adaptability is strong, can be in - 20℃- 60 ℃ environment, can be in - after processing 45 ℃ environment. 8, green environmental protection, regardless of the production, use, scrap, and do not contain, does not produce any poisonous and harmful heavy metals such as lead, mercury, cadmium and material. The disadvantage of lithium battery 1. The lithium battery security is poor, there is a risk of explosion. 2. Made of lithium cobalt acid lithium batteries in the big electricity flow can't discharge, poor safety. 3, lithium battery needs protection circuit, prevent the battery overcharge discharge. 4. High production requirements, there are many reasons for the high cost of lithium battery explosion, which can be roughly divided into external short circuit, internal short circuit and overcharge. Usually, the poles of lithium-ion batteries is not contact, so the battery maker is placed between the poles of a diaphragm. High-quality diaphragm paper, when the battery internal temperature is high, can jam tiny hole, will terminate the electrochemical reaction, make the current plummeted, temperature and slow drop, so as to avoid explosion. If, however, under the influence of various factors, the diaphragm rupture, all the energy in the battery will be rushed to the electrolyte, and electrolyte itself is a kind of volatile chemicals. After absorbing too much energy, it will be hot and burn. Lithium battery can generally filled with 300 - 500 times charging cycle, more than this period will not be able to use the battery, of course this only as a reference. Lithium battery life has nothing to do with the number of charging, and related to the charge and discharge cycle, that is, from zero to full charge the number of times. Refers to the capacity of the battery charging cycle from full to empty, and then from empty to full, this is different from charge. Lithium-ion batteries used in the first day, for example, half of the battery, then charge. If so, the second half day charge, charge twice, so calculate a cycle, rather than two cycles. In daily life, to complete a cycle may take a few time charge. Fall a bit battery capacity per cycle. Even so, the reduction is small, high quality batteries in many times after charging still can maintain 80% of the original capacity, many lithium-ion products in two to three years later still can continue to use. The service life of lithium battery, of course, has yet to be eventually replaced.
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