18650 lithium battery pack PACK
The 18650 lithium battery pack refers to the processing, assembly and packaging of the 18650 battery pack. The process of assembling 18650 cells into a group is called PACK, which can be a single 18650 cell or a series-parallel 18650 battery pack. The 18650 battery pack is usually composed of plastic casing, protective plate, battery core, output electrode, contact piece for connection, and other insulating tapes, double-sided tapes, etc.
18650 Cell: The core part of the finished 18650 battery pack.
Protection board: Plays the functions of overcharge, overdischarge, overcurrent, short circuit, and NTC temperature control intelligent protection.
Plastic shell: the supporting skeleton of the entire battery; the positioning and fixing of the protection plate; carrying and limiting all other non-shell parts.
Terminal lead: Various terminal wire charging and discharging interfaces can be provided for various electronic products, energy storage products, and backup power supplies.
Nickel sheet/bracket: connecting and fixing components of the cell.
18650 battery pack application fields
The application of lithium secondary batteries in the energy battery industry benefits from its superior performance. With the continuous development of lithium secondary battery technology, it has been widely used in our daily life; rechargeable batteries that are used many times are more and more favored by consumers. Pay attention to the energy battery industry, fully understand the battery and let us "use it for me". At present, 18650 lithium battery has certain applications in the following fields.
1. Energy storage: Mainly used in base station power supply, clean energy storage, grid power storage, home solar storage system, etc.
2. Power category: mainly refers to electric vehicles, electric bicycles, new energy vehicles, etc.
3. Digital categories: mobile phones, tablets, laptops, electric toys, MP3/MP4, headphones, power banks, mobile power supplies, etc.
Factors affecting the price of 18650 cells
1. Capacity
We know that capacity is a hot spot of 18650 cells that most novice users are most concerned about. Usually, the higher the capacity, the more expensive the price. We know that the most stable battery capacity range in the entire 18650 battery market is roughly 2200-3600mah, and the highest can be measured around 3600mah. Therefore, when you buy 18650 batteries on a daily basis, you must choose a solution that suits your power supply needs, not blindly chasing high-capacity 18650 batteries.
2. Internal resistance
We know that there are not many household devices that test the capacity and internal resistance of 18650 cells, and most ordinary families do not have so much time to pay attention to the real parameters of 18650 cells. However, for purchasers engaged in the procurement of 18650 cells, understanding the range of internal resistance helps to obtain the final price of 18650 cells more accurately. Usually, the larger the internal resistance, the smaller the capacity is. For those application environments with high power requirements, the resistance value is relatively small, and the price is naturally relatively high. Therefore, another factor that affects the price of 18650 cells is its resistance.
3. Brand
When purchasing polymer lithium batteries, you should look for well-known brands, and the quality of the batteries can be guaranteed. Although many small brand batteries on the market are cheap, they have short lifespan and unstable quality.
