With the development of lithium battery technology, lithium batteries are more and more used in the field of energy storage, and the application field of energy storage lithium batteries is becoming more and more extensive, but what you may not know is that which kind of energy storage lithium battery is better? Because the battery cells used in energy storage lithium batteries include lithium iron phosphate batteries, cylindrical steel-shell lithium-ion batteries and pouch polymer lithium batteries, which one is better?

First of all, in terms of packaging, there are three types of energy storage lithium battery cells, one is cylindrical with steel shell, one is square aluminum shell, and the other is soft aluminum film. These three types of packaging for the same type of lithium battery, in the product design of the fixed battery compartment space, soft pack lithium battery can achieve light weight and large battery capacity, but the price is relatively slightly more expensive, and the square aluminum shell and round steel shell in the capacity of the second, the weight of the steel shell is heavy, for the requirements of lightweight products is not an ideal choice. In terms of space utilization, the soft package is good, and the steel shell is poor. Of course, in terms of price, steel shells are cheap.

In terms of battery type:

1. Lead-acid battery energy storage battery

The use of lead-acid batteries as energy storage batteries has a long history, mainly because the lead-acid battery was invented early, the technology is relatively more mature, of course, its cheap manufacturing cost is also one of the main factors of popularity, but it also has great defects, such as low energy density per unit volume, but the weight is bulky, plus it is relatively small in providing rate discharge, the power provided often cannot meet the demand, and its manufacturing materials have great harm to the environment and the human body. Under the country's advocacy of environmental protection and sustainable development, it is constantly being replaced by lithium battery applications.

2. The energy storage battery uses soft-pack polymer lithium battery

In terms of the economic benefits of energy storage batteries, the use of pouch polymer lithium batteries is expensive, and the safety performance is also unstable. This is the reason why many batteries used in new energy vehicles are not polymer lithium batteries. Despite this, it is ideal to choose polymer lithium batteries in some energy storage batteries that are more lightweight. For example, some electronic equipment for field exploration or work requires that the energy storage battery that provides backup power is as light and small as possible in terms of weight. Therefore, polymer lithium batteries are not an ideal choice for energy storage batteries used in daily life.

3. Lithium iron phosphate batteries are used for energy storage batteries

In the field of energy storage battery applications, lithium iron phosphate batteries may be widely used in the future, why is this? Let's first understand the advantages of lithium iron phosphate batteries. First of all, in terms of temperature resistance, lithium iron phosphate batteries are the high-temperature resistant batteries among all energy storage batteries, which has laid a certain foundation for safety and stability. Then in terms of providing high-current discharge, although it is slightly worse than polymer lithium batteries, it is much better than lead-acid batteries, so the batteries used by many intelligent cargo handling vehicles or robots used in warehousing and logistics are basically lithium iron phosphate batteries. Again, in terms of environmental protection, lithium iron phosphate batteries are environmentally friendly and pollution-free, and the raw materials used and manufactured are from a wide range of sources, which is a good product for sustainable development. In terms of electrochemical performance, such as battery capacity, energy density, cycle life, etc., it is much better than lead-acid batteries.