Battery

摘要

A battery includes an electrode assembly fabricated with a positive electrode, a separator, and a negative electrode, each perforated by corresponding through voids along both of their respective opposite edge margins, stacked one upon another with the corresponding holes aligned. An arrangement of guide portions integrally formed simultaneously together with a surrounding case, accommodates stacking of the electrode assembly during fabrication of the battery. Aspects of the guide portions extend along a direction of stacking of the positive electrodes, negative electrodes and separators. The case and the arrangement of guide portions improve the internal alignment and facilitates the stack ability of electrode assemblies formed by the stacking of positive electrodes, negative electrodes and separators, and enhances the operational stability of the battery and the output performance of the battery, without detracting from the overall compactness of the battery.

主权项

1. A battery comprising:
an electrode assembly comprised of a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode, each of the positive electrode, the negative electrode and the separator having through voids along edges, one of the positive electrode and the negative electrode including an electrode current collector and an active material layer formed on the electrode current collector, the electrode current collector of the one of the positive electrode and the negative electrode having an active material non-coated portion on which the active material layer is not formed, the through voids of the one of the positive electrode and the negative electrode being formed on the active material non-coated portion of the electrode current collector of the one of the positive electrode and the negative electrode, the through voids of the positive electrode overlapping with the through voids of the negative electrode; a case accommodating the electrode assembly; and a guide portion integrally formed with the case, the guide portion engaging the through voids of the positive electrode and the negative electrode together to align the separator with the positive and negative electrodes.