Lithium-ion battery features:
High energy density; high working voltage (3V); no memory effect; long cycle life, no pollution; light weight; small self-discharge; high price.
Specific advantages of lithium-ion batteries:
Relatively high energy. Its energy storage volume density is high, about 460-600Wh\/kg, about 6-7 times that of lead-acid batteries;
The service life is long, and the service life can reach more than 6 years. The lithium iron phosphate positive electrode battery can be used for 10,000 times after charging and discharging 1 CDOD;
The working voltage is relatively high (single normal operating voltage is 3.7V or 3.2V), and it can hold about 3 Ni-Cd batteries or Ni-MH rechargeable batteries in series, which can be used to form a battery power pack;
All have high power carrying capacity, among which lithium-ion ferrous phosphate batteries for electric vehicles can reach 15-30C charge and discharge efficiency, and can be accelerated through high-intensity startup;
Fast charging, charging efficiency up to 100 percent, large output power, long service life, non-toxic, harmless, known as green batteries.
Lithium battery voltage platform: The balanced voltage of a single battery is 3.7V or 3.2V, which is equal to the series voltage of 3 nickel-cadmium batteries or nickel-hydrogen batteries composed of batteries; the energy density of lithium-ion batteries is high. These batteries have very high energy storage density High, currently up to 460-600Wh\/kg, about 6-7 times that of lead batteries. Compared with lead batteries, lithium-ion batteries are light in weight and small in size, and the weight is about 1\/5-6 of lithium-ion batteries of lead products The battery life is long, the service life is more than 6 years, and the positive electrode battery is lithium iron phosphate.
Large power capacity, can charge and discharge 15-30C, fast start-up speed; low self-discharge rate, no memory effect; can charge and discharge lithium-ion batteries at -20-60 degrees Celsius, have high low temperature adaptability, can be used at -45 degrees Celsius It can be used in the environment of temperature, and can also be used in the environment of -60 degrees Celsius; green and environmental protection, no matter what production, use or scrap, it does not contain lead, mercury, cadmium and other toxic and very harmful heavy metal elements and substances.
Disadvantages of lithium-ion batteries
The safety of lithium-ion batteries is poor, and there is a danger of explosion. Lithium-ion batteries cannot be discharged with high DC voltage, which is not good for the safety of lithium cobalt oxide materials. All lithium-ion batteries need to protect the circuit to prevent the battery from being overcharged and over-discharged. The requirements are high and the cost is high.