A power metal-air battery

Abstract

The invention discloses a power metal-air battery. The air battery includes: an air cathode, a metal cylinder, and a metal ball; the air cathode is cylindrical and is sheathed on the periphery of the metal cylinder; an electrolyte is filled between the air cathode and the metal cylinder; the metal ball is filled in the metal cylinder; The side wall of the cylinder is provided with a through hole whose diameter gradually increases from bottom to top; the maximum diameter of the through hole is smaller than the maximum diameter of the metal ball; the electrolyte passes through the through hole and contacts the metal ball; the diameter of the inner surface of the metal cylinder increases from the bottom to the top. increasing sequentially from top to bottom. The air battery of the invention does not need to replace the anode, can fully react the metal oxide, and saves the use cost of the battery.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a power metal-air battery. Background technique [0002] Pure electric vehicles and portable appliances are driven by the batteries they carry. In order to increase the mileage or time of the equipment, batteries with high energy density are required. Lithium-ion batteries have high charging efficiency and no memory, and are currently the most widely used mobile power sources for pure electric vehicles and portable appliances. Currently used non-polymer lithium-ion batteries have low energy density, while polymer lithium-ion batteries with high energy density have high cost and may spontaneously ignite under high temperature and sunlight. Metal-air batteries have high energy density and are safe to use, and are expected to become a promising solution for power batteries. Metal-air batteries use active metals as the anode and oxygen in the air as the cathode to provide electri...

AI Technical Summary

Problems solved by technology

[0009] Because the crystal phase of the metal anode plate is not completely uniform, and the electric field in the battery is not uniform, the loss of the metal anode is not uniform. During the service life, the area of ​​the anode will change, which will affect the power and internal resistance of the battery.

Especially when the metal anode is relatively thin, the uneven loss will cause part of the plate to fall off. For mobile devices, especially high-speed mobile devices such as electric vehicles, it will cause damage inside the battery

In order to avoid this situation, the anode can only be replaced in advance when the anode still has a certain thickness, which causes the chemical energy stored in the anode to not be fully released, affects the power density of the battery, and increases the use cost of the metal-air battery

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