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The origin and advantages and disadvantages of lithium batteries

by:Vglory      2021-05-14
The origin of the lithium battery The first lithium battery in the world was born in the United States in March 1976. Engineers from an oil company used lithium metal as the positive electrode and titanium sulfide as the negative electrode, relying on the movement of the positive and negative electrodes of lithium ions. Electric current is formed inside the battery, which completes the process of charging and discharging, and interacts with the outside world to form electrical energy. Through research, the lithium battery’s energy storage ability and charge-discharge time and other indicators are much better than other rechargeable batteries at the time, which aroused people's great interest. After the 1980s, people strengthened the transformation of the prototype of lithium batteries. It has greatly enhanced its stability, size and manufacturing process, and lithium batteries are widely used in mobile digital and even electric vehicles. However, with the expansion of the scale of use, the risks of lithium batteries have gradually surfaced. Advantages of lithium batteries 1. High voltage channels for lithium batteries: The average voltage of a single battery is 3.7V or 3.2V, which is approximately equal to the series voltage of three nickel-cadmium batteries or nickel-hydrogen batteries, which is convenient to form a battery power pack; 2. Relative batteries In terms of lithium battery energy density is high. With high storage energy density, it has reached 460-600Wh/kg at present, which is about 6-7 times that of lead-acid batteries; 3. Compared with lead-acid batteries, lithium batteries have lighter weight, and the weight of the same volume is about 1 of that of lead-acid products. /5-6; 4. The service life of lithium batteries is relatively long, and the service life can reach more than 6 years. The battery with lithium iron phosphate as the positive electrode can be charged and discharged with 1CDOD, and it can be used for 1000 times; 5. With high power tolerance The lithium iron phosphate lithium battery used in electric vehicles can reach 15-30C charge and discharge ability, which is convenient for high-intensity start-up; 6. Low self-discharge rate, no memory effect; 7. High and low temperature adaptability of lithium battery , Can be used in the environment of -20℃--60℃, and can be used in the environment of -45℃ through technical solutions; 8. Green and environmental protection, no matter production, use or scrap, it does not contain or appear any Lead, mercury, cadmium and other toxic and harmful heavy metal elements and substances. Disadvantages of lithium batteries 1. Lithium batteries have poor safety and risk of explosion. 2. Lithium batteries made of lithium cobalt oxide cannot be discharged at high currents, and their safety is poor. 3. Lithium batteries need to maintain the circuit, and guard against overcharge and overdischarge of the battery. 4. High production requirements and high cost. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the advantages of lithium battery energy storage?
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