Fifteen advantages of lithium-ion batteries
Electric vehicle batteries are divided into lead-acid batteries and lithium-ion batteries. Compared with the lead-acid batteries of electric vehicles, we know less about the lithium-ion batteries of lithium electric vehicles. Let’s briefly introduce the ten advantages of lithium-ion batteries.
1. Long cycle life: Li-ion battery is charged and discharged at a rate of 1C, and its cycle life is greater than or equal to 500 times. The electric capacity at the 500th time is greater than 70% of the nominal copper beam. And even if the lead-acid battery is discharged at 0.5 and charged at 0.15C, its cycle life is less than or equal to 350 times, and the capacity is less than or equal to 60%.
2. Good low-temperature discharge performance: Li-ion batteries can work normally at -25 degrees, and their capacity can reach 70% of the nominal capacity, while lead-acid batteries have 50% of the capacity at -10 degrees, which is at -25 degrees. Time is not: It can work normally.
3. Strong charge retention capacity: After placing a fully charged lithium-ion battery pack for two months, its capacity is greater than or equal to 80%, while lead-acid batteries are placed for two months, only 40%-50% of the nominal capacity %.
4. Strong continuation ability. Since the weight of the lithium-ion battery pack is only 30% of the lead-acid battery, under the same voltage and capacity, the continuation ability of the lithium-ion battery is strong.
5. High specific energy: Since the volume of lithium-ion batteries is only 30% of that of lead-acid batteries, the energy reserve of lithium-ion batteries is larger than that of lead-acid batteries when the same space is used.
6. Wide operating temperature range: Lithium-ion batteries can work in the range of -25 degrees to 55 degrees, while lead-acid batteries can only work in the range of 10 degrees to 40 degrees.
7. Short charging time: As lithium-ion batteries can be charged with large currents, the charging time is only 4-5 hours, while lead-acid batteries need 8 to 10 hours.
8. High environmental protection performance: Compared with lead-acid batteries, which have a large amount of heavy metal lead that is harmful to the human body and the environment, lithium-ion batteries are highly environmentally friendly products.
9. High current discharge: Li-ion battery discharges at high current at 1C rate, and its capacity is only 60% of rated capacity.
10. High current discharge does not affect cycle life: Li-ion batteries are discharged at a high current rate of 1.5C and have no effect on their cycle life. The lead-acid battery discharges at a large current at a rate of 1.5C. Its cycle life is only 30%-40% of the nominal cycle life.
11. Lithium battery is light in weight and small in size: Lithium battery electric vehicles are currently diversified in brands, and are similar to lead-acid batteries (simple electric bicycles) in terms of power performance. They can be charged for 6 to 8 hours and can run 30 to 45 kilometers depending on the battery capacity. , The weight is only about 1/5 of the lead-acid battery, and the current general lithium battery is guaranteed for 2 years, and the lead-acid battery is guaranteed for 1 year.
12. Lithium batteries have activation-free characteristics: Lithium batteries are easy to activate, and the battery can be activated and restored to normal capacity after 3-5 normal charge and discharge cycles. Due to the characteristics of the lithium battery itself, it is determined that it has almost no memory effect. Therefore, the user does not need special methods and equipment during the activation process of the new lithium battery.
13. Lithium battery does not have memory effect: When charging lead-acid batteries and nickel batteries, I have always worried about the memory effect of the battery, while the lithium battery of electric bicycles does not have memory effect, so you can safely charge without worrying about the previous charging of the battery. Condition.
14. Long cycle life of lithium battery: Li-ion battery is charged and discharged at a rate of 1C, and its cycle life is greater than or equal to 500 times. The electric capacity at the 500th time is greater than 70% of the nominal copper beam. And even if the lead-acid battery is discharged at 0.5 and charged at 0.15C, its cycle life is less than or equal to 350 times, and the capacity is less than or equal to 60%.
15. Wide operating temperature range: Li-ion batteries for electric bicycles can work in the range of -25 degrees to 55 degrees, and their electric capacity can reach 70% of the nominal capacity, while lead-acid batteries can only work in the range of 10 degrees to 40 degrees. , It does not work normally at -25 degrees.
