How long is the life of a polymer lithium battery?

Experts believe that lithium batteries are the first choice for electric bicycle battery upgrades. After the lithium battery is widely applied to portable communication tools such as mobile phones, its green quality has been recognized. The battery that does not use water or any heavy metal in the production process uses carbon and lithium salts as the main raw materials, and the exhaust gas generated is completely recycled and recycled; no solid pollution is caused, and the environmental impact is minimized. Lithium battery is less than 3 kg, which is much lighter than 15 kg lead-acid battery; in performance, lithium battery performance is also more excellent, -20 ° C to 55 ° C can be normally charged and discharged, life is electric vehicle lead-acid battery life 3 to 4 times. According to Academician He Wei, lithium battery electric bicycles will be popularized in the next three to five years. However, the high price of electric bicycle lithium batteries is still daunting for consumers.

With the increasing global pollution, energy conservation and environmental protection have become the projects advocated by all walks of life, then how to save energy, how to be environmentally friendly? Starting from the products that people use every day, there are many products that pollute the environment on the market, and the management of these products is fundamental. In the battery market, the lithium battery is a supernova, which is quickly recognized by consumers because of its long service life, complete charge and discharge, no memory effect, and no pollution.

Since the electrolyte materials constituting the lithium ion battery are different, the lithium ion battery is also classified into a polymer lithium ion battery and a liquid lithium ion battery. The polymer lithium ion battery is the same as the positive and negative materials of the liquid lithium ion battery, and the battery works similarly, and the electrolytes are different from each other. The polymer lithium battery is light in weight, has high energy storage capability, good discharge performance, and can be formed into various shapes and has a long life. The electrolyte of the polymer lithium battery is a solid electrolyte, and the polymer lithium battery can cause various shapes to improve the specific capacity of the battery with respect to the liquid electrolyte of the liquid lithium ion battery.

So how long does the polymer lithium battery last? Under the international unified standard, the battery life is not expressed by time, but by the number of cycles, that is, the complete discharge of the electricity once, the general lithium battery is between 500 and 800 times, the A polymer battery can Up to 800 times. Therefore, the quality of the battery of the selected battery supplier will be guaranteed and the service life will be longer.

If a lithium-ion battery is used in a high-temperature environment, such as a temperature above 350C, the amount of battery stored will continue to decrease, resulting in a battery that does not last as long as it is in a normal temperature environment. When the battery is charged in such a high temperature environment, the battery will be damaged to a large extent, thereby affecting the service life of the battery. Even charging in a hot environment can cause different degrees of damage to the battery, so you should try to avoid charging the battery in a high temperature environment. If the battery is charged in a low temperature environment, such as in an environment below 40C, the battery will also be damaged.

If the polymer lithium-ion battery is not charged for a long time, it will reduce its life. Polymer lithium-ion batteries need to reach their ideal lifetime when the electrons remain flow for a long time. The commercial production technology of polymer lithium-ion batteries in the world is not very mature, and now the market share is not high.

At present, the market price of polymer lithium ion batteries is higher than that of liquid lithium ion batteries. Compared with liquid lithium ion batteries, it has a long life and good safety performance. It is believed that there will be a large room for improvement in the near future.

With electric vehicles every day, do you know how long the life of electric vehicle lithium batteries is? Lithium-ion battery can only charge and discharge 500 times, right? I believe that most consumers have heard that the life of lithium batteries is "500 times" and 500 times of charge and discharge. More than this number of times, the battery will be "dying down". Many friends are trying to extend the life of the battery every time. Charging when the battery is completely exhausted, does this really extend the life of the battery the answer is negative. The life of a lithium battery is "500 times", which means not the number of times of charging, but a period of charging and discharging.

A charge cycle means that all of the battery's charge is from full to empty, and then from empty to full, which is not the same as charging. For example, a lithium battery used only half of the power on the first day, and then charged it slowly. If it is still the next day, it will be charged in half, and it will be charged twice in total. This can only be counted as one charging cycle, not two. Therefore, it is usually possible to complete a cycle after several charges. The battery capacity is reduced a little every time a charge cycle is completed. However, this amount of power is very small, and high-quality batteries will retain 80% of the original capacity after many cycles. Many lithium-powered products will still be used after two or three years. Of course, the life of the lithium battery still needs to be replaced after the end. The so-called 500 times means that the manufacturer has achieved 625 times of chargeable times at a constant depth of discharge, reaching 500 charge cycles. Due to the various effects of real life, especially the depth of discharge during charging is not constant the "500 charging cycles" can only be used as a reference battery life.

1. Lithium battery light weight Small lithium battery Electric car is currently diversified in brand. In terms of power performance, it is similar to lead-acid battery. It can be charged for 6~8 hours. It can run 30~45km according to battery capacity. The weight is only lead-acid battery. About 1/5, and currently the general lithium battery is guaranteed for 2 years, and the lead-acid battery is guaranteed for 1 year.

2, lithium battery with activation-free characteristics Lithium battery is easy to activate, as long as 3-5 times the normal charge and discharge cycle can activate the battery, restore normal capacity. Due to the characteristics of the lithium battery itself, it is determined that it has almost no memory effect. Therefore, the user's new lithium battery does not require special methods and equipment during the activation process.

3, lithium battery with memory effect when charging lead-acid batteries, nickel batteries, have been worried about the battery memory effect, and electric bicycle lithium battery without memory effect, you can safely charge without worrying about the battery before charging.

4, lithium battery cycle life Lithium-ion battery charge and discharge at 1C rate, its cycle life is greater than or equal to 500 times, the capacity of the 500th time, greater than 70% of the nominal copper beam. The lead-acid battery, even if it is discharged at 0.5, is charged at 0.15 C, and its cycle life is 350 or less, and the capacity is 60% or less.

5, wide operating temperature range Electric bicycle lithium-ion battery can work in the range of -25 degrees to 55 degrees, its capacity can reach 70% of the nominal capacity, and lead-acid batteries can only work in the range of 10 to 40 degrees it does not work properly at -25 degrees.

6, lithium battery charging time is short, green and environmentally friendly because the electric bicycle lithium-ion battery has the characteristics of high current charging, so the charging time is only 4-5 hours, while the lead-acid battery takes 8 to 10 hours. There is no heavy metal lead harmful to the environment, which is a highly environmentally friendly product.

How long does it take: How many years can an electric vehicle lithium battery last? I believe that most consumers have heard that the life of lithium batteries is "500 times" and 500 times of charge and discharge. More than this number of times, the battery will be "dying down". Many friends are trying to extend the life of the battery every time. Charging when the battery is completely exhausted, does this really extend the life of the battery the answer is negative. The life of a lithium battery is "500 times", which means not the number of times of charging, but a period of charging and discharging.

A charge cycle means that all of the battery's charge is from full to empty, and then from empty to full, which is not the same as charging. For example, a lithium battery used only half of the power on the first day, and then charged it slowly. If it is still the next day, it will be charged in half, and it will be charged twice in total. This can only be counted as one charging cycle, not two. Therefore, it is usually possible to complete a cycle after several charges. The battery capacity is reduced a little every time a charge cycle is completed.

However, this amount of power is very small, and high-quality batteries will retain 80% of the original capacity after many cycles. Many lithium-powered products will still be used after two or three years. Of course, the life of the lithium battery still needs to be replaced after the end. The so-called 500 times means that the manufacturer has achieved 625 times of chargeable times at a constant depth of discharge, reaching 500 charge cycles. Due to the various effects of real life, especially the depth of discharge during charging is not constant the "500 charging cycles" can only be used as a reference battery life.

Misunderstanding: We often have "the lithium battery is exhausted and then recharged" or "the lithium battery is full and then continue to flush, must be charged for 12 hours" misunderstanding. As everyone knows, if you overcharge or over-discharge the lithium battery, you will not be able to extend the life of the lithium battery of the electric vehicle, but will shorten it. So how do you use lithium batteries correctly?

In the use of lithium batteries, it should be noted that after the battery is placed for a period of time, it enters a sleep state. At this time, the capacity is lower than the normal value, and the use time is also shortened. However, the lithium battery is easy to activate, as long as it is 3-5 times normal charging and discharging.

The battery cycle activates the battery and restores normal capacity. Due to the characteristics of the lithium battery itself, it is determined that it has almost no memory effect. Therefore, the new lithium battery in the user's mobile phone does not require special methods and equipment during the activation process. Not only in theory, but from my own practice, it is best to use a standard method of charging this "natural activation" method from the beginning.

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