Lithium battery with strong high temperature resistance

The utility model relates to the technical field of lithium battery production and processing, and discloses a lithium battery with strong high temperature resistance, which comprises an upper end cover, the bottom of the upper end cover is fixedly connected with a box body, the upper end cover comprises an upper cover body, the upper surface of the upper cover body is movably connected with a positive pole, the upper surface of the upper cover body is movably connected with a negative pole, and the upper surface of the upper cover body is fixedly connected with the box body. A groove is formed in the upper surface of the upper cover body, a lock catch is fixedly installed in the groove, the box body comprises a shell, supporting legs are fixedly installed at the top of the shell, a groove is formed in the top end of the front face of the shell, and a steel needle is movably connected into the groove. According to the lithium battery with the high temperature resistance, the steel needle penetrates through th