Advantages of lithium ion polymer batteries over other types of batteries

2019-03-26 11:22:55 0

Since the pouch cell has no strong metal casing, by themselves they are over 20% lighter than equivalent cylindrical cells. The advantages of Li-ion polymer over the lithium-ion design include potentially lower cost of manufacturing, adaptability to a wide variety of packaging shapes and reliability. Its main features and highlights are as follows:

1. High Energy Density:

the weight of a Lipo battery is approximately one half compared to a nickel-cadmium or nickel-metal hydride battery of similar capacity. Moreover, the volume of the Lipo battery is 40% to 50% smaller than that of a nickel-cadmium and 20% to 30% smaller than that of a nickel-metal hydride battery. 

2. Higher Cost-to-Energy Ratio: 

in comparison to all other kinds of rechargeable battery categories, the capacity and density of Lipo battery is generally higher than the same category liquid type lithium battery.

3. High Discharge Rate: 

GEB provides Lipo cells and packs from 0.2C to 45C highly discharge rate batteries for vast applications where need power.

4. Long Cycle Life:

under normal operating conditions, the Lipo battery still remains 60%-80% of the original capacity after 500 charge/discharge cycles.

5. No Memory Effect and Reconditioning Need: 

Lipo battery is free from the so-called memory effect, a phenomenon seen in nickel-cadmium in which the apparent battery capacity decreases when shallow charge and discharge cycles are repeated.

6. Highly Flexible Dimension and Low Profile: 

T x W x L (T: thickness W: width L: length) from 1mm to 12mm thick, 10-90mm wide, and 13-180mm long. Batteries resembling the profile of a quarter credit card are feasible. 

7. Flexible Form Factor: 

cells are not bound by standard cell formats. With high volume, any reasonable size can be produced economically.

8. High Voltage:

a single Lipo cell has a voltage of a mean value 3.7V, which is equal to either three nickel-cadmium or nickel-metal hydride cells connected in series.

9. Wide Capacity Range:

single cell from 35mAh to 10Ah in only a 0.12mm thick aluminum laminate film outer covering.

10. Light Weighted:

The use of aluminum laminate film for packaging provides light-weight advantage in comparison with other rechargeable categories. 

11. Small Impedance: 

equal to or more than 25mΩ 

12. Wide Range Operating Temperature Conditions:

from -20℃ to +80℃

13. Improved Safety Performance:

as the aluminum laminate film outer package is different from the meta shell of liquid lithium ion battery, and once safety problems arise, there is no explosion but only expansion. 

14. Pollution-free:

Lipo battery does not contain any polluting substances such as cadmium, lead, mercury, etc.

15. Non-metal Lithium:

Lipo battery does not employ any lithium metal. It is not governed by aircraft transportation rules relating to carrying lithium batteries in passenger airplanes.

16. Fast Charge Capacity: 

LiPo batteries must be charged carefully. The basic procedure is to begin at constant current until each cell reaches 4.2 V. The charger must then switch to a constant voltage mode, and the charging current will gradually be reduced as the charger holds the cell voltage at 4.2 V. This continues until the charge current has dropped to a small fraction of the initial charge rate, at which point the battery is considered fully charged.

17. Battery Protection Circuit Module (PCM) Available: 

Capable to modify with protection circuit to ensure excellent safety level. 

18. Battery Pack Assembly Available:

Whatsoever in an hard case envelope or PCM, fly leads, and/or with the genuine wire connector in either series or parallel strings connection.