| 摘要 |
A winding type dynamical type lithium-ion secondary battery includes a container, an electrolyte solution, a positive electrode plate and a negative electrode plate coiled as a core, and a separator interpose between the positive electrode plate and negative electrode plate, it is characterized in that, one edge of the positive electrode plate and one edge of the negative electrode plate which is opposite to the edge of the positive electrode plate are provided with projections and recesses as cuts respectively, said projections and recesses as cuts are spaced regularly, the projections of the edges are used as non-coated tabs, the positive or negative non-coated tab is bundled respectively by a electrode terminal with a bundle part so as to form a positive or negative electrode terminal. One side of the electrical conductive substrate plate is formed with the edge which has projections and recesses spaced regularly, the non-coated projections are used as tab, so that the positive or negative plate is formed with tab integrally. The present invention overcomes the shortcoming in the prior art that the positive or negative electrode plate is connected to tab by welding process. The improved structure not only can simplify process, reduce cost, but also can increase various performance of the lithium-ion secondary battery greatly. The battery structure of the present invention satisfies the need of the manufacture process of the high capacity power-type lithium-ion battery. |
