Polymer lithium battery, is a kind of chemical battery. Compared with traditional batteries, lithium polymer battery has the characteristics of high energy, small size and light weight.
1. What is lithium polymer battery? And what does lithium polymer mean?
There is no need for series and parallel as a premise and a single cell also has electrodes. These electrodes are immersed in the solution which is called electrolyte. The oxidation-reduction reactions occur at these electrodes that produce electrical energy from chemical energy. Batteries are source which convert electrochemical energy into electrical energy. On the contrary, they can convert electrical energy into electrochemical energy.
Lithium is not a very heavy metal and can float in water. It is also a very reactive metal. So, it has very excellent electrochemical characteristics. These characteristics are very helpful to use lithium element in batteries. When we use this metal in electrochemical cells and batteries, We can say we are using polymer battery.
Lithium metal is used as the anode in lithium polymer battery. Lithium polymer means that in polymer battery, we use lithium metal as anode and the polymer electrolyte acts as an electrolyte and a separator between the positive electrode and the negative electrode, so the performance of the polymer electrolyte is crucial to the performance of the entire battery. Currently, gel polymer is used in lithium polymer batteries.
2. Is lithium polymer battery rechargeable?
Yes, the lithium polymer battery is rechargeable. The unit energy of polymer lithium-ion batteries is higher than that of current general lithium-ion batteries, and its capacity, charge-discharge characteristics, safety are greatly improved compared with lithium-ion batteries. Polymer lithium-ion batteries can be charged with IC(constant current).
3. Is lithium polymer battery good?
We use lithium metal, which is light and very reactive, in lithium polymer battery. We also use gel-like polymer in this type of batteries and such batteries are less likely to leak.
Higher capacity density than other batteries
The self-discharge rate is low, and the power will not drop quickly without charging
Long life, generally can be cycled more than 4000 times
No memory effect, no need to fully discharge before charging
4. How does lithium polymer battery connect?
Lithium battery packs need to be combined in series and in parallel to achieve the required voltage and capacity. The batteries are generally connected by nickel sheets. This requires special equipment to weld the nickel sheets and cells. This way It is relatively firm and safe. Then connect the corresponding protection and then output.
5. How does lithium polymer battery work?
Lithium polymer battery has three components. This battery consists of positive electrode called anode; negative electrode called cathode and the last one is electrolyte. In electrolyte, these electrodes are dipped. This electrolyte transfers positive lithium ions from positive electrode (anode) to the negative electrode (cathode). Due to movement of these ions, electricity is produced that can be used for different purposes. Hence, in this way lithium polymer battery works.
6. What are the advantages of lithium polymer battery?
There are following advantages of lithium polymer battery:
This type of batteries is light as we use lithium metal which is not heavy metal.
This battery produces more electrical energy from chemical energy as compared to other batteries and cells.
lithium polymer battery generates about 3.2-3.7V high voltage to get more electric current.
We use solid gel-like as a polymer to prevent leakage.
These batteries can be fast charged.
7. How do you charge lithium polymer battery?
Charging in the right way determines the life of lithium polymer battery. To charge the polymer battery, we first applied a constant current and then second, constant voltage. To get voltage upto the end of charging voltage, applied constant current charge. The current starts decreasing when we reach the high charging voltage level. At low current level charging is stopped. This is how we charge the polymer battery.
8. How many times can we recharge lithium polymer battery?
After 2000-4000 cycles, the DOD of the battery can still reach 80%. For this reason, manufactures prefer lithium polymer batteries over other batteries.
9. Is lithium polymer battery the same as lithium-ion battery? If not, what is the difference between them?
No, lithium polymer battery is not the same as lithium-ion battery.
The main difference is the electrochemical or electrolyte present in both types (lithium polymer battery and lithium-ion battery) as a third component in batteries. In polymer battery, we use solid like-gel electrolyte while in lithium-ion battery we can use liquid as electrolyte.
10. Which is better and safer, lithium-ion battery or lithium polymer battery?
Lithium polymer battery is lighter, safer. If there is a problem, it will only bulge instead of exploding. Besides, it has more flexible design without shape restrictions.
11. Can we overcharge lithium polymer battery?
No, we cannot overcharge polymer battery. Because it causes adverse effect on conditions and battery life.
12. How long does lithium polymer battery last?
Lithium polymer has a lifespan between 2000 to 4000 charge cycles. The battery lifespan will not be affected if the battery is overcharged.
13. Can we take lithium polymer battery on plane?
Lithium polymer batteries are one of the best batteries. Many of these batteries have advantages. However, these batteries have several disadvantages as well as advantages. Because lithium polymer batteries are small in size, it’s easy to take. These lithium polymer batteries can conduct heat to a dangerous level, causing fire in the plane. If we want to take the batteries on the plane, we must follow the recommendations and regulations given by the authority.
14. How do we keep lithium polymer battery healthy?
We can keep lithium polymer battery healthy by following the precautions. The precautions are given below:
1. Avoid overcharging
Overcharging is not good for battery safety and we also say the discharge and charge rate should be 20%-80%.
2. Avoid using fast charging unnecessarily
Fasting charging sometimes may also do harm to battery safety and health.
3. Avoid discharging devices faster than necessary
Discharhging devices are also an important component that should be noticed.
4. Keep it at proper temperature range, especially while charging
Temperature is also a vital factor and we should keep battery in a mild temperature.
5. Avoid charging to 100% when charging
Overcharging will affect the efficiency and lifespan of battery.
15. Do lithium-ion polymer batteries lose charge when not in use?
Any type of battery loses its charge when not in use. Similarly, lithium-ion polymer batteries lose their charge when not in use.
16. What are the applications scenarios of lithium-ion polymer batteries?
Lithium-ion polymer batteries have the following applications;
The lithium-ion batteries are used in drones, portable devices.
They are used in pacemakers and other implantable devices.
In telecommunications equipment, instruments, portable radios and TVs, pagers they are used.
They are used to operate laptops, computers and mobile phones and aerospace application.
17. How to choose lithium polymer battery?
For some applications we need to choose the lithium-ion polymer battery. So, keep considering the following points that made us to choose lithium-ion polymer battery.
First check capacity and estimate how long power you need and how long you need it in devices or equipment.
The main reason for choosing a lithium-ion polymer battery is its charging speed. Because these types of batteries charge safely.
lifetime of lithium-ion battery has much longer lifespan than other types of batteries. That’s why we choose lithium-ion polymer battery.