WINDING-TYPE LITHIUM ION BATTERY AND ELECTRONIC DEVICE

A winding-type lithium ion battery and an electronic device. The winding-type lithium ion battery comprises an electrode assembly (20); the electrode assembly (20) comprises a first electrode plate (21), a separator (22), and a second electrode plate (23) that are successively stacked and wound; the first electrode plate (21) comprises a first current collector (200a) and multiple first tabs (212) electrically connected to the first current collector (200a); the second electrode plate (23) comprises a second current collector (200b) and multiple second tabs (232) electrically connected to the second current collector (200b); the electrode assembly (20) is flat, and a notch S is provided at at least one corner of the electrode assembly (20). By providing a multi-tab structure, the charge and discharge performance of the battery is improved, and a battery failure can be avoided when a single tab is damaged, thus improving the safety performance of the battery. The provision of the notch can increase the width o