Combined automobile storage battery

The utility model provides a combined automobile storage battery which is characterized in that positioning bosses are mounted at four corners of the top of a storage battery module, sliding devices are arranged on the positioning bosses in the direction close to the long edge of the storage battery module, and fastening devices are arranged at the bottom of the storage battery module in the direction corresponding to the sliding devices; a sliding block in a sliding groove in the upper end of a storage battery module drives a movable plate to move upwards in a vertical groove, meanwhile, a handle is lifted to be pulled outwards, a fixed rod is pulled outwards to drive a limiting block to be pulled outwards, so that one end of the fixed rod is separated from a square groove, and the upper end of the movable plate moves into the square groove; the top of the movable plate is in close contact with the top end of the square groove, so that the fixing hole in the upper end of the movable plate corresponds to the