How to assemble a 12V lithium battery
The core problem that the assembly of lithium battery packs mainly solves is the consistency of lithium batteries, that is, the voltage difference, capacity difference, and internal resistance difference of each battery cell are as small as possible. The 12V assembled in this way packs can exert their best effects in terms of efficiency and service life. The following is some knowledge sharing about how to assemble 12V lithium battery.
I. Assembly method of large-capacity 12V lithium battery
The design principle of large-capacity 12V lithium battery is to assemble and process multiple 3.7V lithium batteries. , When making a large-capacity 12V lithium battery assembly, it is required to assemble in parallel. Only the large-capacity 3.7V lithium-ion battery pack is assembled in parallel to produce the largest battery capacity, and then the more batteries are assembled in series and parallel. The larger the battery capacity.
2. Cylindrical 12V lithium battery
The corresponding 12V lithium battery pack pack will be formed after multiple cylindrical batteries are designed in series and parallel, but one thing must be a battery that satisfies the customer The size, voltage capacity, and overcurrent requirements can be considered as cylindrical 12V lithium battery assembly qualified.
Cylindrical 12V lithium battery assembly. For example, the 12V solar insecticidal lamp has a lithium-ion battery capacity of 2.6Ah and a nominal voltage of 11.1V. Most of the industry refers to this 3-string lithium battery pack as 12V pack, battery capacity can be customized, such as 12V10Ah solar insecticidal lamp lithium ion battery, 12V8Ah solar insecticidal lamp lithium ion battery, 12V15Ah lithium ion battery custom technology method, the solar insecticidal lamp battery in this article is 3 Each 3.7VLC18650 lithium battery cell is assembled in PACK, and the single battery capacity reaches 2600mAh. This insecticidal lamp battery is sometimes called 11.1V lithium ion battery pack, and the finished small solar insecticidal lamp battery pack.
Three, 12V lithium iron phosphate battery assembly
The nominal voltage of this customized lithium-ion battery pack made of lithium iron phosphate material is generally called 12.8V, and some battery technicians call it 12.8V. 12.8V lithium ion battery pack, of course, the technical requirements for customization of lithium iron phosphate 12V lithium ion battery are more stringent. It adopts a 4-string battery structure, which can customize 26650 lithium ion batteries or 18650 lithium ion battery packs through 4-series technology for PACK processing Assemble and then make a customized product of lithium iron phosphate 12V lithium ion battery.
Four. 12V polymer lithium battery assembly
12V polymer lithium battery assembly is even simpler. The principle of 12V polymer lithium battery assembly is to make 3 strings of polymer lithium batteries. Connection, but the battery protection board must be added when the polymer 12V lithium-ion battery is customized to be connected, and then the laser welding process, battery soldering technology, and PACK lithium battery pack processing technology are mixed into one crystallization, but it is related to the cylinder. , Polymer 12V customization using this method is relatively rare.
The 12V lithium battery assembly process is customized according to actual product requirements. The battery customization process is important to evaluate and analyze the actual situation, and then perform cost analysis and profit analysis for comprehensive quotation according to the company process. Under normal circumstances The battery customization process is divided into two parts, which are as follows:
1. Understand the real requirements of the product, and only need to supply the lithium-ion battery size, electrical performance requirements, output requirements, and functional requirements to customize the battery.
2. If you don’t understand the real requirements of the product, just tell us the functional requirements, working time, product power, appearance and shape.
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