Cleaning device, production system and cleaning method

The invention provides a cleaning device (100), a production system (1000) and a cleaning method. The cleaning device (100) comprises a first fixing piece (10), a second fixing piece (20) and a laser assembly (30). The first fixing piece (10) is used for fixing the shell (210); the second fixing piece (20) is arranged opposite to the first fixing piece (10) and is used for fixing the end cover (220); the laser assembly (30) is arranged on one side of the first fixing piece (10) and one side of the second fixing piece (20) and used for cleaning the shell (210) and the end cover (220) when the end cover part is combined into the shell (210).