The utility model discloses a nickel -hydrogen battery with prevented that hot junction from constructing, including the nickel -hydrogen battery body, wherein the nickel -hydrogen battery body is by battery case and install and constitute at the inboard electric core subassembly of battery case, and wherein electric core subassembly includes that negative plate, diaphragm and positive plate constitute, and position between negative plate and the positive plate is located to its septation, the bottom position of negative plate and the head end position of positive plate all are equipped with the white edge, and wherein the bottom white edge welded connection of negative plate has a negative current collection piece, the utility model discloses the terminal opening and the through -hole welding on the dissipating heat set outer wall of well heat dissipation post are docked to inside and the dissipating heat set's of heat dissipation post inside being linked together of intermediate layer, thus the coolant oil can flow into the heat dissipation, and the post is inboard, the coolant oil carried like this temperature alright through dissipating heat set and heat dissipation post to the external radiation, radiating effect holistic like this is very good, thus the effectual temperature that produces the battery spreads to the outside, the overheated circumstances appearance of battery of consequently having avoided appearing.