A single battery and a battery pack

Abstract

This invention belongs to the field of power battery technology, and particularly relates to a single battery cell and battery pack. The single battery cell includes a cell, a positive electrode connection assembly, a negative electrode connection assembly, a thermal pad assembly, a housing, and a top cover assembly. The top cover assembly seals the housing. The cell is disposed within the housing and includes a positive electrode plate, a negative electrode plate, and a separator disposed between the positive and negative electrode plates. One end of the positive electrode plate is connected to the top cover assembly via the positive electrode connection assembly, and one end of the negative electrode plate is connected to the top cover assembly via the negative electrode connection assembly. The thermal pad assembly is disposed within the housing, contacting the inner wall of the housing, and directly contacting either the positive or negative electrode connection assembly. In this embodiment of the single battery, heat at the positive or negative electrode connection assembly can be directly transferred to the housing through the thermal pad assembly, shortening the cooling heat conduction path, thereby improving heat dissipation efficiency and preventing heat accumulation that could lead to thermal runaway.

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