High-capacity battery

The utility model relates to the technical field of lithium batteries, and discloses a high-capacity battery. The high-capacity battery comprises a shell and a pole group assembly, two ends of the shell are opened and are respectively connected with end covers, and the pole group assembly is arranged in the shell. The pole group assembly comprises a pole group, foam and a heat conduction plate, the foam wraps the periphery of the pole group, the heat conduction plate is connected to the periphery of the foam in a pressing mode, and the two ends of the heat conduction plate are connected with the two end covers in a limiting mode respectively. The high-capacity battery is easy to assemble, the position of the pole group in the shell is fixed, the pole group is not easy to move, the liquid saturation and the heat dissipation are better, and the use safety is higher. 本实用新型涉及锂电池技术领域，公开大容量电池。该大容量电池包括外壳和极组组件，外壳两端开口，并分别连有端盖，极组组件设置在外壳中。极组组件包括：极组、泡棉和导热板件，泡棉包裹在极组外周，导热板件压接在泡棉外周，且导热板件的两端分别与两个端盖限位连接。该大容量电池易于装配，极组在外壳内位置固定，