Many people may not know that there are various packaging forms for electric vehicle lithium batteries, including cylindrical, square, and soft bags. Different packaging structures mean different characteristics, each with its own advantages and disadvantages. Next, let's explore the differences between these three types of lithium batteries with Topband Lithium Battery!

1. Prismatic iron lithium battery

Prismatic iron lithium batteries usually refer to aluminum or steel shell prismatic batteries. The popularity of prismatic batteries is very high in China. With the rise of automotive power batteries in recent years, the contradiction between car range and battery capacity is becoming increasingly prominent. Domestic power battery manufacturers mainly use aluminum shell prismatic batteries with higher energy density, because the structure of prismatic batteries is relatively simple, Unlike cylindrical batteries that use high-strength stainless steel as the casing and accessories with explosion-proof safety valves, the overall weight of the accessories is lighter and the relative energy density is higher.

2. Cylindrical iron lithium battery

Cylindrical iron lithium batteries are mainly composed of steel shell cylindrical iron phosphate lithium batteries. These batteries have high capacity, high output voltage, good charge discharge cycling performance, stable output voltage, high current discharge capacity, stable electrochemical performance, safe use, wide working temperature range, and environmental friendliness. Widely used in solar lighting fixtures, lawn lighting fixtures, backup energy, electric tools, and toy models.

A typical cylindrical battery structure includes: positive electrode cover, safety valve, PTC element, current cut-off mechanism, gasket, positive electrode, negative electrode, isolation membrane, and shell.

3. Soft pack iron lithium battery

Soft pack iron lithium batteries are liquid lithium batteries covered with a polymer shell. The biggest difference from other batteries lies in the soft packaging material (aluminum plastic composite film), which is also the most critical and technically challenging material in soft pack lithium batteries. The packaging materials and structure of soft pack lithium batteries give them many advantages.

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.