High-energy-density battery module

The high-energy-density battery module comprises a battery cell, side plates, end plates, an integrated cover plate assembly, a pole column assembly and a cover plate, wherein the side plates and theend plates are made of aluminum and are welded and fixed in a side seam laser welding mode; the integrated cover plate assembly and the end plates on the two sides are clamped and fixed to the upper portion of a rectangular installation structure; the pole column assembly is fixed to the end plates; the cover plate and the integrated cover plate assembly are clamped and fixed; a reinforcing rib ismanufactured at the top of the cover plate; and convex ribs are formed on the cover plate and the pole column protective cover in an injection molding mode. According to the side plate, a traditionalconnecting mode that a flanging structure is arranged at the connecting position of the bottom of the module and the end plate is omitted, the aluminum plate is directly adopted for penetration and side seam welding is conduct