Battery cell assembly and battery with same

The utility model provides a battery cell assembly and a battery with the same, and the battery cell assembly comprises a battery cell structure which is provided with a first connecting part for inputting or outputting electric energy; the battery protection plate is provided with a second connecting part, and the first connecting part and the second connecting part are connected in a tin soldering mode; wherein an auxiliary connecting structure is arranged on the connecting face of the first connecting part, so that the contact area between the first connecting part and a tin layer of tin soldering is increased through the auxiliary connecting structure, and the connecting face is the face, facing the second connecting part, of the first connecting part. According to the battery core assembly, the technical problem that the manufacturing cost of the battery core assembly in the related technology is high is solved. 本实用新型提供了一种电芯组件及具有其的电池，电芯组件包括：电芯结构，电芯结构具有用于输入或输出电能的第一连接部；电池保护板，电池保护板具有第二连接部，第一连接部与第二连接部通过锡焊方式连