3.7V Li-ion battery or 3.2V LFP, different type cells? how to choose? скачать в хорошем качестве

3.7V Li-ion battery or 3.2V LFP, different type cells? how to choose?

hey, guys this video will show you how to choose a right lithium battery type to make a lithium battery pack for your equipment. I'll mainly analyze it from the specifications, performance and end application scenarios of these three types of batteries. We can't go on without your support. We truly appreciate your subscriptions and likes. First, cylindrical lithium-ion batteries. The standardized design of cylindrical lithium batteries makes them quite popular in the market. The common models are 18650 and 21700. The numbers represent the size of the battery. Like, 18650 means it's 18mm in diameter and 65mm in height, and 0 indicates a cylindrical shape. The manufacturing process of cylindrical batteries is mature. They have good heat dissipation and are highly safe. These battery cells are very flexible to assemble and are particularly good for non-standard-sized battery compartments. In practical situations, they're better for devices with limited space but requiring high power output and long working hours. Such as, when electric scooters are used a lot, these batteries can provide stable discharge performance. And for some portable power tools like drills, cylindrical batteries can also supply a high current quickly to meet the tool's instantaneous power needs. But these battery cells have a small volume and capacity, so the assembly is rather complicated. For example, this cell has a capacity of 2000mAh, that is 2Ah. If you want to make a regular electric vehicle battery like 48V20ah, you need to assemble more than 100 of them. That will be very complicated to assemble. However, having a lot of cells isn't necessarily bad ，cause the risk for each cell decreases. If there are really some defective cells among them, the overall impact would be manageable. So electric vehicles like Tesla's MODEL 3 and MODEL Y series are equipped with nearly 3,000 such 21700 cylindrical cells. Standard 3.7V Li-ion and 3.2V LFP battery cells are also generally interchangeable in most application scenarios. Let's talk about this type of battery cell next. We call it: square aluminum-shell large single one. As you can see, this design provides a larger internal space, enabling it to contain more active materials. So it's typically used in cases requiring high energy and high power. The sturdy shell protects the internal components better, and its heat dissipation is also good too. It can operate stably under high power conditions. One more thing, it's easy to assemble and the battery pack has a relatively long service life. If there's enough space in your battery compartment, this is the best choice. Such as electric tricycles, golf carts, sightseeing vehicles, and so on. When it comes to LFP battery in particular, it's mainly used in energy storage situations, like home energy storage, RVs, outdoor power supplies. It’s fit on heat dissipation and can support stable operation under high power conditions. Next up is this type - the soft-pack battery. The main feature of soft-pack cells is their light weight. The design is to fit flexibly into all kinds of complex space requirements. Inside the soft-pack cells, there's gel electrolyte. Its discharge is more stable. And it can be made into a high-energy-density type, able to provide a lot of power in a small size. Also, because the shell is thinner, it's more prone to damage from physical impact and affect safety. If there's gas expansion and bulging, it will be more obvious. Finally let’s sum it up: Cylindrical lithium batteries are suitable for electric scooters and portable power tools used a lot. Square aluminum-shell large cells are the best choice for long-range electric motorcycles and electric cars. And soft-pack batteries do very well in drones and portable energy storage systems. Basically, all three work, but which one to pick depends on things like the size of your battery compartment, what your device needs, and which kind of cell material is easier to get and has a steadier supply. There is one more thing can help you decide: The 3.7V Li-ion battery works better in low-temperature conditions. But in the high-temperature conditions ,it’s no doubt that 3.2V LFP battery is better. So, no matter what shape of the battery cell you choose, if the place has a relatively long average period of low temperatures each year, I suggested that you go for the Li-ion battery cell type. And now ,you may ask, which one is safer? To be honest, if the battery quality is good, and it is paired with a good BMS and charger, there is no need to worry about safety issues as long as the usage method is correct. Or, if you're still interested, let's talk about how to choose a BMS and a charger next time.