Main-grid-free battery string series connection equipment

The utility model provides a main-grid-free battery string series connection device, which comprises a welding strip roller group, a main grid-free battery string series connection device and a main grid-free battery string series connection device, the lower adhesive tape roller is used for supplying an adhesive tape adhered to the bottom surface of the battery piece; the upper adhesive tape sticking device is used for supplying an adhesive tape stuck to the top surface of the battery piece; the fixing table is used for placing each battery piece which needs to be subjected to top surface welding strip pasting; a movable bearing table of the glue feeding bearing device is provided with a first position, a second position and a third position from bottom to top along the height, and the movable bearing table is switched among the first position, the second position and the third position under the common driving of a linear lifting assembly and a linear transverse moving assembly; the device further comprises