Button battery

Abstract

The present application discloses a button battery. The button battery includes a case, a positive electrode powder piece, and a current collector. The case includes a positive electrode case and a negative electrode case interconnected. The positive electrode case and the negative electrode case are connected to define a cavity. The positive electrode powder piece is disposed in the cavity. The current collector is disposed in the cavity, the current collector and the positive electrode powder piece are stacked, and at least a part of the current collector is embedded into the positive electrode powder piece. A side of current collector away from the positive electrode powder piece is contacted with a bottom of the positive electrode case.

Dependencies are inferred from the claim text.