Combined lithium battery

The utility model discloses a combined lithium battery which comprises a lithium battery and U-shaped mounting plates, the U-shaped mounting plates are symmetrically arranged on the upper side and the lower side of the lithium battery, splicing seats are arranged between the inner walls of the U-shaped mounting plates at equal intervals, the splicing seats are movably connected with the upper end and the lower end of the lithium battery respectively, and connecting grooves are formed in the front sides and the rear sides of the splicing seats in a penetrating mode respectively. The connecting grooves penetrate through the right sides of the U-shaped mounting plates and can be screwed out through the limiting screws in an outward rotating mode, the splicing bases arranged between the U-shaped mounting plates at equal intervals can be taken down one by one from outside to inside, each row of lithium batteries arranged between the U-shaped mounting plates can be disassembled, the outer sides of the upper ends an