摘要 |
PURPOSE: A lithium ion hybrid battery pack is provided to improve capacity and output performance by having two or more battery cells, thereby being used for effective operation of various systems. CONSTITUTION: A battery pack(100) comprises two or more battery modules(200a,200b,200c,200d) consisting of one or more unit batteries. A plurality of unit batteries are electrically connected to each other. The unit battery consists of two or more battery cells with different output and capacity with each other. The battery module is formed in a structure that two or more unit modules are surrounded by an exterior material. The unit battery comprises the combination of a high output/low capacity battery cell and a low output/high capacity battery cell. |