Series and parallel connections are two combinations of lithium batteries.
The series connection method means that the negative electrode of the first lithium battery is connected to the positive electrode of the second lithium battery, and the negative electrode of the second lithium battery is connected to the positive electrode of the third battery, and so on, until the required voltage is reached. The voltage of this connection method is the sum of the voltages of the cells connected together, and the capacity is the capacity of a single cell, which is then connected to the output. for protection. For example, a 12V battery requires three strings (taking ternary materials as an example) and a 24V battery requires seven strings.
The parallel connection method means that the positive electrode of the first lithium battery is connected to the positive electrode of the second cell, theThe negative electrode is connected to the negative electrode, and so on, until the required capacity is reached. is reached. The voltage in this overall method remains unchanged is the voltage of a single cell, and the capacity is the sum of all battery capacities.
Lithium battery combining requires both of these combination methods to achieve the required voltage and capacity. Batteries are usually connected via nickel foils. This requires special equipment to solder the nickel sheets to the battery core. The method is relatively solid and safe. Then connect the corresponding protection before going out.