Nowadays, the square hard case battery is the most widely used battery pack form in the world, and it is also the mainstream form in China at present and in the future. Many series of new energy vehicle companies use square hard case batteries. Audi, BMW and other international traditional manufacturers also Adopt square hard case battery solution. One of the most important reasons for the wide application of prismatic hard case batteries is that there are many suppliers and the technical difficulty is relatively low. Most domestic battery suppliers choose to develop square hard case batteries. For example, the well-known battery manufacturer CATL is an important supplier of prismatic hard-shell batteries.

In addition to the abundant suppliers just mentioned, the advantages of square batteries are that square batteries are more customizable, and the space utilization rate of square batteries is higher than that of cylindrical batteries, but the problem is that the outer hard protective shell will be obvious. The overall weight of the battery pack has been added, so the domestic similar ideal manufacturer ONE began to use aluminum as the outer protective shell, which not only effectively guaranteed the light weight but also improved the battery energy density.

The plasticity of the square battery will be stronger, and the customized design can be carried out according to the specific needs of the mounted products. This also results in different sizes. At present, no matter the manufacturing process or application standard, there is no clear standard division like cylindrical batteries. But it is precisely because of its high flexibility that it has been used in early new energy vehicles for a long time, and car companies can customize the size of the square battery according to the needs of the model. The prismatic battery was once considered to be the most suitable battery design for new energy vehicle applications. In fact, many square battery packs on the market, although the name is square battery, but the inner essence is the soft pack battery to be discussed next.

In terms of technology, the domestic prismatic battery technology is very mature, and the requirements for material technology (such as inflation rate, expansion rate and other indicators) are not high, and there are no technical barriers in the industry. In terms of manufacturing cost, the materials of prismatic batteries have been completely localized, and their technical requirements for battery materials are lower than those of pouch batteries. The overall material cost is about 10% lower than that of pouch batteries under the same capacity. The finished square battery is relatively simple to process, and the Pack lithium battery pack is reliable and has obvious cost advantages. In addition, the square battery package adopts laser sealing process, which has strong sealing and can effectively avoid problems such as aging and air leakage at the sealing.

At present, there is no clear standard division for prismatic batteries regardless of the manufacturing process or application standards. Due to its high flexibility, it has been widely used in early new energy vehicle products, and car companies can customize the size of the square battery according to the needs of the model. The prismatic battery adopts the winding or lamination process, which has high energy density and long battery cycle life. The square battery case is a steel case or an aluminum case. With the improvement of the production process, the shell is mainly made of aluminum shell at this stage, the main reason is that the aluminum shell is lighter and safer than the steel shell.

Shenzhen Topband Battery Co., Ltd.，established in 2006, is a wholly-owned subsidiary of Shenzhen Topband Co., Ltd. (002139.SZ). We focus on lithium iron phosphate batteries,with independent research and development in cells and BMS. With the ability to integrate the entire industry chain, we are committed to providing customers with one-stop lithium battery solutions and services. Our quality products are widely used in energy storage and light power.