Lithium-ion batteries have always dominated the power industry and are slowly but surely expanding their use. Lithium-ion battery power systems have become an increasingly popular choice due to their much greater specific energy density than other types such as lead-acid batteries. Li-ion applications are currently designing pouch cells for use in Li-ion battery packs. This is an effective way to reduce cost and battery weight while optimizing packaging efficiency at the battery level.
What is a pouch battery
In 1994, people proposed the soft-pack lithium-ion battery, that is, the soft-pack battery, which can use space very effectively and have an efficiency as high as 95%. This compact battery is one of the best performing batteries due to its flexibility, portability and safety.
The use of pouch cells eliminates the use of metal casings, reducing weight and making them a good choice for the automotive, military, and consumer industries. The flexible lithium-ion battery pack is designed with an aluminum-plastic film that will fail due to bumps, but won't explode like more traditional steel cases.It is designed using a stacking process, where the positive and negative electrodes are cut into small pieces and then stacked in parallel with the help of separators to form a large battery. This process improves the battery's lifetime, internal resistance, energy density, and space utilization by 10%.
Advantages of choosing a pouch battery
As mentioned above, there are several benefits to choosing a pouch Li-ion battery, but the following are some detailed points
Reliability
Pouch cells are more reliable than prismatic cells and other similar cells, mainly because of their production technology. Unlike most batteries, which use a more basic winding technique, pouch batteries use a stacking technique that allows them to have greater depth. This means that when one battery fails, it doesn't cause all of them to fail and the next battery takes over.
Because of the way it's designed, you can perform maintenance on its individual parts without compromising battery life. Simply replace the failed unit and the rest of the system will perform its function without any problems, so you can depend on its performance.
Security function
Other batteries are designed with metal casings (usually steel or aluminum), so flexibility is limited. When something goes wrong inside a cylindrical battery, it tends to swell or bulge, which is a sign of a bad battery.However, a conventional cylindrical battery is encased in an iron sheath that doesn't have much elasticity, meaning it could explode and pose a safety hazard when pressure builds up underneath. The pouch battery is designed with a plastic casing that expands with increasing pressure, so you don't have to worry about a sudden fire.
Flexibility
This lithium battery pack is assembled with a standard built-in battery management system. Modules can be stacked in series to increase Li-ion battery charging voltage, or in parallel to increase capacity.The battery management system is multifunctional and can communicate using output cables. These batteries are very flexible, you can choose to charge the battery modules as a whole battery pack or individually according to your requirement.
Unified
These batteries are designed by Auto Devices, which means they are all the same. Once manufactured, it goes through some machine testing for quality control, checking that all batteries are up to standard.This process greatly improves efficiency and accuracy, since human error in handcrafted cells does not become a factor. The process allows these cells to have true consistency in design and expected performance.
Overall lighter weight
Due to the lightweight design of lithium battery packs, pouch batteries are much lighter than other types of batteries. Its flat engineering gives it greater density, a major benefit of the design, increasing its effectiveness. Batteries designed in this way help reduce the overall weight of the device and improve portability.
