Top sealing head and top sealing device for top sealing of soft package battery

The utility model discloses a top sealing head for top sealing of a soft package battery, a top sealing device, and the top sealing head for top sealing of the soft package battery, and the top sealing head comprises two sealing heads which are respectively located at an upper position and a lower position, the two sealing heads are provided with tab grooves for accommodating tabs, and the width of the tab grooves is not less than the width of the tabs along the width direction of the tabs. Wherein the width of the tab glue is larger than that of the tab groove, the part, except the tab groove, of the end socket is a non-tab part, the part, wider than the tab, of the tab glue is an extending part, and an auxiliary groove is formed in the position, coinciding with the extending part, of thenon-tab part of the end socket. The auxiliary grooves are formed in the two sides of the lug groove of the end socket, when lug glue and PP layers of the aluminum-plastic films on the upper side andthe lower side are heated,