The invention discloses an online inspection and cleaning device of batteries. The online inspection and cleaning device comprises a frame, a first conveying belt, a second conveying belt and an isolation hood, wherein the first conveying belt is arranged on an 
operating table of the frame and is used for bearing to-be-inspected batteries, the second conveying belt is used for bearing qualified batteries, the isolation hood is arranged on the 
tail end of the second conveying belt, an inlet and an outlet are correspondingly formed in the front and back parts of the isolation hood, at least one group of cleaning 
brush which is driven to rotate is correspondingly arranged in the ends, which are opposite to anodes and cathodes of the batteries, in the isolation hood, and the isolation hood is communicated with a vacuum device by virtue of a communicating 
pipe. According to the online inspection and cleaning device, a conveying belt type 
workbench is redesigned, and an online cleaning and dust removing device of the batteries is additionally arranged, so that the 
assembly line work can be realized, and the operations are completed by different operators according to different functions. The actual 
operation time and efficiency of different posts are measured, so that the number of operators of each post is reasonably arranged, the online cleaning and dust removing device is used for replacing manual operation, the purpose of increasing the efficiency by downsizing payrolls is realized, additionally, the previous and subsequent operation beats are balanced, the 
maximum efficiency is achieved, the scale production is facilitated, and the application range is wide.