The utility model provides a high-temperature-resistant low-impedance battery and relates to the technical field of batteries. The negative
electrode material is used for solving the technical problems that the conventional negative
electrode material and formula used by the existing battery are easy to pulverize in the later stage of high-temperature circulation, the
discharge performance of the battery is poor, and the service life is short. The high-temperature-resistant low-impedance battery comprises a steel shell, a
positive current collector is arranged in the steel shell, a positive connecting piece is mounted on the
positive current collector, a convex ring is fixedly connected in the steel shell, a connecting plate is mounted on the convex ring, the positive connecting piece is connected with the connecting plate, a positive column is mounted on the connecting plate, a negative
current collector is arranged in the steel shell, and a negative column is mounted on the negative
current collector. A clamping groove is formed in the steel shell, a negative
electrode end is arranged in the clamping groove, and the negative electrode connecting piece is connected with the negative electrode end. The rare
metal element
yttrium in the negative plate can improve pulverization of negative electrode
powder in the later period of charging and discharging in a high-temperature environment, reduce increase of
internal resistance of the battery, improve discharging performance and achieve the effect of prolonging the service life of the battery.