18650 battery assembly method should be based on the battery structure, different lithium battery pack structure in the PACK assembly method is different, 18650 battery PACK multi-string and more attention should be paid before assembly, the battery is considered to be basically assembled when the battery Very simple, similar to the following 1 string 1 and 18650 lithium battery assembly, 18650 battery pack process skills summary analysis can start from the basic simple 18650 battery assembly, so it is easier to get started later.
1, the battery is neatly arranged, which is convenient for future maintenance and better use of the standard 18650 battery card holder.
2, good welding, the market more welding methods are using nickel welding machine spot welding, you can also use electric soldering iron, solder joints are in good contact.
3. After soldering, the wiring of each group of batteries must be clearly arranged.
4, do waterproof and insulation, better cut a piece of barley paper or asbestos material.
5. More importantly, the internal resistance of the battery before soldering, the current voltage error should not exceed 0.05V! It is necessary to add a special protection plate for the lithium battery to prevent overshoot and over discharge. After soldering, measure the voltage of each channel.
6. After using the newly assembled battery pack for a period of time, it is necessary to check the voltage of the battery in groups.
18650 lithium battery assembly refers to the 18650 lithium battery PACK assembly, which means the processing of finished products. The battery PACK mainly has three layers. The battery PACK system uses mechanical structure to connect many single domestic batteries through series and parallel connection, and consider the mechanical strength of the system. Hot management, BMS matching, etc. Its main technology is reflected in the overall structural design, welding and processing technology control, protection level, active thermal management system, etc. At present, most of the domestic PACK adopts simple air-cooling heat dissipation, and has an active liquid cooling system like Tesla. The entire PACK technical barrier is also relatively low.
1. Battery PACK mainly refers to the processing and assembly of lithium battery packs in the early stage. It is only the assembly of battery packs (that is, the order of a battery factory can not be completed and then it is given to another factory, which is also a kind of battery PACK). The battery, the battery protection board, the battery connection piece, the label paper, etc. are processed into a product required by the customer through the battery PACK process; but now this basic has not existed, because the battery cost rises, the labor is expensive and the processing profit is low.
2, battery PACK is now mainly concentrated in the lithium battery PACK factory, have their own PACK structure design, PACK electronic design and PACK production workshop, can independently develop and design according to customer needs, through battery solutions, battery specifications, After the battery sample meets the customer's PACK lithium battery customization requirements, the PACK production line of the PACK workshop is processed and processed, and the quality inspection is qualified and shipped.
3. The battery PCAK is the package of the lithium battery. The voltage capacity of the single cell sometimes cannot meet the needs of the user. At this time, the cylindrical lithium battery needs to be combined in series or in parallel. The process of forming a battery pack that meets the user's needs is called a PCAK of a lithium battery in series or in parallel with several batteries.
With the improvement of people's quality of life, the requirements for various battery-related product styling and performance are getting higher and higher. Many high-quality products that use batteries are ready to look for lithium battery packs, so now many lithium Battery PACK manufacturers are doing some custom services. In recent years, some custom PACK lithium battery pack services and PACK lithium battery pack customization have become more and more popular.