Nowadays, many charging appliances use lithium batteries internally, including soft pack, cylindrical, rectangular, and so on.
Among them, cylindrical lithium batteries are divided into various models according to their size, such as the most common ones 186502265032650, etc. The number 18 in the 18650 model represents the diameter of the battery, 65 represents the length of the battery, and 0 indicates that the battery is cylindrical.
The voltage of a single lithium battery is generally 3.2V to 3.7V. Many electronic devices use a voltage of 12V, so we need to use multiple lithium batteries to form a group to reach 12V. The assembly of lithium batteries also requires a protective plate.
The main purpose of the protection board is to provide overload protection, short circuit protection, overheating protection, low voltage protection, overvoltage protection, battery balancing, overcharge protection, etc., mainly to protect the battery from damage.
Due to the relatively small capacity of a single battery, the editor has prepared 12 32650 lithium batteries, four of which are connected in series to form a group of 12V, and then three groups of 12V are connected in parallel to increase both capacity and voltage.
Assembling batteries requires the use of nickel tape, high-temperature adhesive tape, and battery brackets.
Generally, when connecting lithium batteries, the nickel strip is soldered onto it. If there is no soldering machine, you can use sandpaper to polish both ends of the battery and then solder it with an electric soldering iron. The following diagram shows the connection method between the battery and the protection board. Although the diagram is simple, it is easy to understand
Take the battery circuit, measure the voltage, and check if the capacities are the same. If the capacities are different, do not weld them together. Take the battery circuit, measure the voltage, and check if the capacities are the same. If the capacities are different, do not weld them together
Install the battery and battery holder, and arrange them in a positive and negative pattern
Then wrap the heat-resistant material around it, connect the battery with nickel tape, and use a soldering iron instead of a spot welding machine. Also, stick the protective board onto the tape. The effect of nickel strip spot welding needs to be distinguished between which and which connection, otherwise it will cause a short circuit
Finally, weld the protective plate and plug. Generally, the protective plate will be clearly marked with the connection method, which can be connected with wires. If you feel that one plug is too few, you can add another one, and the 12V lithium battery is completed.
The above is the assembly method of 12V lithium battery compiled by the editor. Thank you for watching the article on assembly method of 12V lithium battery.
