Non-rectangular batteries for portable electronic devices

摘要

The disclosed embodiments provide a battery cell. The battery cell includes a set of layers forming a non-rectangular shape, wherein the set of layers comprises a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a first conductive tab coupled to the cathode and a second conductive tab coupled to the anode. The layers are enclosed in a flexible pouch, and the first and second conductive tabs are extended through seals in the pouch to provide terminals for the battery cell. Furthermore, the non-rectangular shape is created by removing material from one or more of the layers.

主权项

1. A battery cell, comprising: a stack of non-rectangular layers that vary in size, comprising electrode layers with intervening separator layers, wherein the electrode layers include alternating anode and cathode layers, and wherein the layers that vary in size are aligned to be flush with each other on at least one flush-side of the stack; wherein each of the electrode layers in the stack has the same non-rectangular shape; and wherein one or more consecutive electrode layers in the stack vary in size; and wherein the electrode layers in the stack form a non-rectangular terraced shape.