A high-voltage connector for energy storage, comprising a socket, wherein the socket comprises a socket body, a mounting flange, an electrical isolation groove, a fastening ring, a pin and an anti-electric shock cap, and the fastening ring of the socket comprises an annular bevel and an annular slot and the fastening ring of the socket is located on an outer cylinder of the socket body, and the fastening ring and the anti-electric shock cap are disposed on an end of the socket body; a plug, wherein the plug comprises a plug body, a pressing buckle, hand-held pluggable portions, a hammering boss, a hole, a crown spring, a wiring cup opening, a waterproof lock washer and a protective back cover, the pressing buckle of the plug comprises a pressing boss, a buckle, and an elastic resetting member, the protective back cover of the plug comprises a ridge portion and a hexagonal portion, wherein the pressing buckle of the plug is located on the plug body; characterised in that the plug further comprises a locking slider configured to be slidable in the plug body after being installed, wherein the pressing buckle of the plug, the locking slider, and the fastening ring of the socket together form a fastening-locking structure; wherein the socket body, the mounting flange, the electrical isolation groove, the fastening ring and the pin of the socket are integrally formed, and after being integrally formed, are assembled with the anti-electric shock cap; wherein the plug body, the pressing buckle, the hand-held pluggable portion, the hammering boss, the hole, the crown spring and the wiring cup opening of the plug are integrally formed, and after being integrally formed, are assembled with the locking slider, the waterproof lock washer, and the protective rear cover; a socket, wherein the socket comprises a socket body, a mounting flange, an electrical isolation groove, a fastening ring, a pin and an anti-electric shock cap, and the fastening ring of the socket comprises an annular bevel and an annular slot and the fastening ring of the socket is located on an outer cylinder of the socket body, and the fastening ring and the anti-electric shock cap are disposed on an end of the socket body; a plug, wherein the plug comprises a plug body, a pressing buckle, hand-held pluggable portions, a hammering boss, a hole, a crown spring, a wiring cup opening, a waterproof lock washer and a protective back cover, the pressing buckle of the plug comprises a pressing boss, a buckle, and an elastic resetting member, the protective back cover of the plug comprises a ridge portion and a hexagonal portion, wherein the pressing buckle of the plug is located on the plug body; characterised in that the plug further comprises a locking slider configured to be slidable in the plug body after being installed, wherein the pressing buckle of the plug, the locking slider, and the fastening ring of the socket together form a fastening-locking structure; wherein the socket body, the mounting flange, the electrical isolation groove, the fastening ring and the pin of the socket are integrally formed, and after being integrally formed, are assembled with the anti-electric shock cap; wherein the plug body, the pressing buckle, the hand-held pluggable portion, the hammering boss, the hole, the crown spring and the wiring cup opening of the plug are integrally formed, and after being integrally formed, are assembled with the locking slider, the waterproof lock washer, and the protective rear cover;