Factors affecting the quality of battery products in the market

　　With the rapid development of electric vehicles and automobiles, the power supply on vehicles has also developed rapidly. However, there are many problems in the production of batteries, resulting in uneven quality of battery products in the market and the later cycle life of battery capacity. Failure to reach the designed service life has a lot to do with the unique production process of the battery in production. The structure of the battery is composed of a shell, an upper cover, a pole plate, a separator, a bus bar, a pole, a bridge protection plate, and a terminal.

　　1. First of all, weigh the plates inside each battery and match the plates. The capacity of each cluster must be equal, otherwise the group with the smaller capacity will be fully charged in advance due to the small capacity, then the battery with the larger capacity has not been fully charged, the terminal voltage of the battery is low, and the total voltage is not fully charged and the final voltage continues. When charging, the group with a small capacity will be overcharged. If the battery is discharged, the group with the small capacity will have no power in advance. The voltage of other batteries is higher, and the total voltage of the battery does not have the termination protection of electric assist. Voltage, the discharge continues but it causes the battery to be over-discharged.

　　Battery overcharging, overdischarging and not charging in time will affect the service life of the battery. However, the capacity of the battery with the smaller battery is further reduced, and the decrease of the battery capacity further causes the battery to be overcharged and overdischarged. This cycle causes the battery capacity to be very high. Decrease quickly and scrap.

　　2. Handling of plates before weighing

　　Before the electrode plates are weighed, it is necessary to clear the excess front edges, burrs, and excess active materials during paste application. If they are not clean, they will cause short circuit of the battery plates, that is, battery self-discharge. It is necessary to brush the earphone with a pole plate to clean the excess impurities on the pole plate to facilitate welding, so as to prevent false welding and false welding. Pick out the uneven plates, those with severe powder removal, and the plates with holes.

　　3. How to weigh the plates

　　When weighing and matching the plates, first weigh a part of the plates and place them on the workbench in sequence according to the weight, compare and mark the weight, and then weigh the plates that are not weighed on the weighing instrument. The weight of the plate is placed together with the plate placed on the workbench according to the weight of the weighed plate, which saves some trouble. (The weight difference of each group of positive plate or negative plate is as small as possible. The error of 10～14AH should not exceed 1g per group, and the error of 17～20AH should not exceed 2g per group.