Storage battery having unit cell protection function and connecting method thereof

Abstract

The invention discloses a storage battery having a unit cell protection function and a connecting method of the storage battery. The invention mainly aims at providing a manufacturing process of a storage battery with each unit cell having a positive electrode and a negative electrode; and a circuit board with an electronic circuit protection function is added. In order to ensure that the storage battery is unlikely to excessively charge or inadequately charge, a self protection function is added on the basis of the traditional storage battery, so that the voltage and the current of one unit cell in each storage battery are relatively dependent from that of another unit cell, each unit cell is automatically bypassed and shunted after being fully charged, the interaction effect among the unit cells such as the excessive charging and heating of the unit cells and inadequate charging of other unit cells when a traditional storage battery charged in a serial connection way can be abandoned; and the voltage of each unit cell of the storage battery is more balanced and more adequate. The storage battery with the protection function is connected with a protected circuit board through a screw. The intelligent storage battery with long service life which always has a self protection function in the entire working process is provided.

Description

technical field [0001] The invention relates to a manufacturing process and method of a storage battery, in particular to a manufacturing method of a power and traction type lead-acid storage battery. Background technique [0002] At present, all kinds of batteries commonly used at home and abroad, especially lead-acid batteries, due to their structural reasons and unreasonable charging methods, have defects such as easy loss of water, easy vulcanization, easy overcharging, and undercharging to varying degrees. The service life is generally not up to the design requirements. [0003] The reason is that people still stay in the traditional way of thinking about the design, manufacture and related charging methods of storage batteries, and they are still using the charging and discharging of traditional storage batteries without self-protection methods for more than 100 years. Example: The storage battery of a 12v electric vehicle adopts 6 single cells of 2v in series inside,...

AI Technical Summary

Problems solved by technology

Similarly, the 18 cells inside the battery pack cannot be effectively balanced and protected

[0004] Batteries with this structure: It is doomed that the cells of the battery have a greater mutual influence during charging. Due to the high manufacturing requirements of the battery and the complicated process, it is difficult to ensure that the capacity and internal resistance of each cell of the battery are exactly the same. , that is, the balance between the cells. During the charging process of the battery, the capacity and internal resistance of one or several cells will be inconsistent, and the voltage will be high or low, resulting in overcharging or undercharging, accelerating water loss and Vulcanization, the capacity is reduced, and after a period of use, it will soon affect the adjacent cells, and the same heat and water loss will occur, and the capacity will decrease, and the cycle will repeat, causing the entire battery or battery pack to be scrapped in advance, causing great waste

Although there have been voltage or current protection and equalization technologies of battery packs (48v, 36v) or single batteries (6v, 12v) in the past, but the effect is not great.

The reason: it is impossible to protect each smallest unit 2v of the battery, especially the lead-acid battery

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