Crystalline silicon battery piece chain type alkali polishing production line

The utility model relates to the technical field of solar cell preparation. The chain-type alkali polishing production line for the crystalline silicon battery pieces comprises a base, the chain-typealkali polishing production line comprises a chain-type alkali polishing device and a chain-type alkali polishing device, the closed box is internally and sequentially provided with a feeding system,a first acid pickling system, a first water washing system, a first polishing system, a second polishing system, a second water washing system, a second acid pickling system, a third water washing system, a drying system and a discharging system which are communicated with one another; the first pickling system and the second pickling system each comprise an acid storage tank, and hydrofluoric acid solutions are contained in the acid storage tanks. According to the production line, only the hydrofluoric acid solution is used as the cleaning solution in the acid pickling process, NOx is prevented from being generated fr