Novel secondary battery

The novel secondary battery comprises a shell 10, a battery cell pole group 9, a battery cell pole group 11, a cover plate 1 and a cover plate 12, the battery core pole group is formed by connecting two battery cores in parallel, so that the capacity of the battery is increased; the cover plate 1 and the cover plate 12 are welded on the shell 10, the shell 10 is connected with the positive electrode of the battery cell pole group 9 and the negative electrode of the battery cell pole group 11 to realize series connection, so that the novel secondary battery is formed, the length size of the secondary battery is increased on the basis of the size of the battery cell pole group, and the space utilization rate of a PACK group is improved. 一种新型二次电池，包括壳体10、电芯极组9、电芯极组11、盖板1、盖板12；电芯极组由两个电芯并联，实现电池容量的增加；盖板1和盖板12焊接到壳体10上，通过壳体10连接电芯极组9的正极和电芯极组11的负极实现串联，形成该新型的二次电池，在电芯极组尺寸的基础上增加二次电池的长度尺寸，提高PACK成组的空间利用率。