Single chip series:
2.1 Preparations:
The battery pieces sent from the single-chip welding process are placed neatly. Plug in the power of the soldering iron and wait for about 1 minute to reach the soldering temperature and solder a layer on the surface of the soldering iron.
All work uniforms, work caps and gloves must be neatly dressed before work.
2.2 Overview of the work:
The welded cells are connected in series.
2.3 Welding:
Arrange the cell sheets according to the drawing requirements, and accurately position them according to the serial template pattern, and then solder the interconnect strips to the back electrode at a constant speed with an electric soldering iron. When soldering the cell of the dot electrode, there must be a significant pause at the solder joint, and each solder joint must be soldered firmly. The back of the battery is a spot electrode, all of which must be soldered; if it is a strip electrode, the length of the interconnect strip must cover more than 70% of the length of the electrode.
The cells in series are placed on a dedicated turnover board, and each of the turnover plates is only allowed to visit 6 series bars.
2.4 Quality requirements
1 The surface of the back electrode after soldering must be flat, and the solder is not allowed to accumulate at a certain point.
2 The back electrode must be welded firmly and without solder joints. If the back side is a spot electrode, there must be no soldering.
3 The gap between the cells should be uniform and meet the requirements of the template.
2.5 Notes:
1 Do not leave the soldering iron on the battery for a long time.
2 The work surface must be kept clean and no extras are allowed to mix into the series bar.
3 When handling the battery, be sure to take care of it.