Troubleshooting process of barrel nickel plating on battery case

Abstract

The invention belongs to the technical field of battery case nickel plating, and discloses a battery case nickel-plating fault treatment process. The treatment process comprises the following steps: washing a battery cell by using tap water for twice, scouring and activating; washing with de-ionized water after removing oil on the battery cell orderly, wherein a lower trough has burst fault before being electroplated; and after treating the fault, continuing the normal electroplating, orderly washing by using the de-ionized water for three times after outputting the battery case, and performing the subsequent treatment. The treatment process is characterized in that the lower trough has burst fault before being electroplated, after the fault is treated, the battery case is firstly output to be washed by the de-ionized water for three times, each time is 20-60 seconds, then the alkali is added for neutralizing, and then the de-ionized water is used for washing for 20-60 seconds; then the tap water washing is returned for twice, scouring and activating, and washing with the de-ionized water before electroplating are performed, wherein a low-foaming wetting agent is added in a scouring solution when the scouring and activating are performed, then the lower trough is electroplated according to the normal process, then the battery case is normally output, and the subsequent treatment and normal operation are performed. The finished product treated by the process provided by the invention is good in appearance and good in combination after being checked, various feature characteristics such as salt mist and blue point and the like are accordant with the normal index.

Description

technical field [0001] The invention belongs to the technical field of battery shell nickel barrel plating, in particular to a battery shell nickel barrel fault treatment process. Background technique [0002] At present, when the barrel nickel plating of the battery shell is in normal operation, the process flow is as follows: figure 1 Shown: After degreasing, the battery shell is first washed with tap water twice for 20-60s each, and then pickled and activated in 20-40ml / l reagent hydrochloric acid (HCL content, %36-38) solution for a certain period of time (2A, 3A and 4~6min for battery case below 3A, 8~10min for SC type, C type, D type, F type battery case), then wash with deionized water for 5~12s, and electroplate in the lower tank (electroplating solution: 200-220g / L nickel sulfate , 40-70g / L nickel chloride, 40-50g / L boric acid, pH value 4.4-4.6, temperature 50-55 degrees acidic solution, add 0.1ml / l barrel bright nickel 998-A brightener and 3~5ml / l Barrel Plating...

AI Technical Summary

Problems solved by technology

In this way, it will cause serious consequences of "coating shedding", and the product can only be scrapped.

Analyzing the reason, it is because the battery case was not plated in time after being activated by pickling, and its surface was seriously impregnated and polluted by the liquid. After a period of time, it was directly plated, and there was a layer of diaphragm between the nickel metal and the cathode substrate, which could not It is firmly bonded together, resulting in poor bonding and plating off.

Images