| 摘要 |
In a battery case main body of the lithium secondary battery, many positive electrode plates and negative electrode plates are stacked. Furthermore, these many positive electrode plates and negative electrode plates are bundled for each predetermined number of plates. In each bundle, the positive electrode plates are bonded to one strap-shaped current collector lead 22A and the negative electrode plates are bonded to one strap-shaped current corrector lead 22B. These current collector leads 22A and 22B are connected to a positive electrode terminal and a negative electrode terminal, respectively. Then, according to a length L of the current corrector leads 22A and 22B for each bundle, a width W of the current corrector leads 22A and 22B is varied, thereby making current collector resistances of the stacked bodies uniform.
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