What are the advantages and disadvantages of Rechargeable Square Pouch Battery and round and soft-pack batteries?

What are the advantages and disadvantages of Rechargeable Square Pouch Battery and round and soft-pack batteries?

12 Dec 2020

With the rapid development of the new energy vehicle market today, I believe that everyone has some understanding of the new energy vehicles on the market. However, when it comes to the internal structure of new energy vehicles, few people may understand. In this article, we will give you a simple knowledge of the battery shape, and see what advantages and disadvantages each of the mainstream cylindrical, square and soft pack batteries on the market have.

First of all, we want to talk about the more popular cylindrical batteries. Up to now, cylindrical batteries can generally be divided into 14650, 18650 and 21700 models. This is the name of the battery named by the battery size. I believe that everyone has heard about the 18650 and 21700 batteries. The 18650 is currently the most common battery model on the market, and it is also one of the most mature technologies. The 21700 is a new type of battery that Tesla has promoted in recent years. . The size of a single cylindrical battery will be larger, and the power will become more. As a result, the number of batteries has also been greatly reduced, which makes the vehicle's battery system control more handy.Rechargeable Square Pouch Battery

After years of development, the standardization of cylindrical batteries is generally relatively high, so that it is easy to achieve uniform standards in the industry. In addition, cylindrical batteries generally have innate advantages in terms of heat dissipation. A good heat dissipation space is formed between the cylinder and the cylinder during packaging. Therefore, some vehicles equipped with cylindrical batteries basically adopt lower-cost air-cooling technology.

Let's talk about Rechargeable Square Pouch Battery. Generally speaking, Rechargeable Square Pouch Battery will be more plastic, because it can be customized according to the specific needs of the product. This has also led to differences in size. At present, no matter the manufacturing process or application standards, there is no clear standard division as for cylindrical batteries. But because of this, this kind of battery is highly flexible and can be used in early new energy vehicles for a long time. Car companies can customize the size of the Rechargeable Square Pouch Battery according to the needs of the model. Rechargeable Square Pouch Battery was once considered to be the most suitable battery design for new energy vehicle applications. In fact, there are many Rechargeable Square Pouch Battery packs on the market. Although the name is Rechargeable Square Pouch Battery, the internal nature is still a soft pack battery.

Finally, the soft pack battery is generally thinner because of the superimposed manufacturing method, so it has the highest energy density of the three batteries, which is more in line with the development trend of my country's new energy vehicle market. In addition, the soft pack battery can also be customized according to different needs. Because the controllability of its volume is also valued by car brands, especially for hybrid models, when the layout and weight of the vehicle need to be considered at the same time, the advantages of the soft pack battery are obvious. The soft pack battery pack is also important. The aluminum-plastic film packaging is lighter than the aluminum shell, which can further increase the energy density of the entire battery pack.

In terms of the shape of the battery pack, the soft-pack battery has many advantages. The soft-pack battery that can also be customized has more imagination and more changes in shape, not limited to rectangles. It can be formed into a small battery pack and placed under the trunk, or it can be made into a T-shaped layout.

In the current new energy vehicle market, cylindrical batteries, Rechargeable Square Pouch Battery, and soft pack batteries are all used by manufacturers, each occupying a place. At this stage, the three are not absolutely good or bad, they can only be said to be Each has its advantages and disadvantages. Cylindrical batteries have considerable advantages in terms of consistency due to a longer development time. At the same time, because the manufacturing process is more mature, the cost is lower. However, in terms of battery layout and energy density, cylindrical batteries still have room for further improvement. For Rechargeable Square Pouch Battery and soft pack battery, although it is difficult to be comparable to cylindrical batteries at the level of standardization, it can be customized to enable it to better coordinate with vehicles and satisfy different manufacturers. The special needs of different models.