Portable mechanical rechargeable zinc-air secondary battery

Abstract

The invention discloses a portable mechanical rechargeable zinc-air secondary battery, which comprises a battery shell and a battery reaction component arranged in the battery shell, wherein the battery shell comprises a bottom shell, a zinc paste box and a head cover; the zinc paste box is movably arranged between the bottom shell and the head cover; the battery reaction component comprises an air electrode, a membrane and zinc paste; a catalyst layer of the air electrode is close to the membrane; a hydrophobic breathable side of the air electrode is toward a breathable mesh of the head cover; the zinc paste is arranged in the zinc paste box; and an open surface of the zinc paste box is clung to the membrane, so that the zinc paste box is mechanically recharged into the battery as a negative electrode. According to the portable mechanical rechargeable zinc-air secondary battery, secondary use of the battery can be achieved through mechanical replacement of a negative electrode material, so that the service efficiency of the battery is improved, the security of the battery is improved and the energy is saved.

Description

technical field [0001] The invention relates to the technical field of electrochemical power sources, in particular to a portable mechanically rechargeable zinc-air secondary battery. Background technique [0002] At present, outdoor charging mainly adopts the method of mobile power charging. The commonly used mobile power battery inner core is mainly a polymer lithium-ion battery. However, polymer ion batteries have low energy density, high cost, and are likely to explode after being squeezed, punctured or collided, and their safety cannot be guaranteed. However, the current mass-produced solar cells or hand-operated power generation devices are used for charging, which has low efficiency and is difficult to meet the electricity demand. Zinc-air battery has an ultra-high theoretical energy density, and the electrode active material is cheap and easy to obtain. It is regarded as a "next-generation green high-energy battery". Power bank for charging outdoors. [0003] Met...

AI Technical Summary

Problems solved by technology

[0007] In the related art, a method of adding zinc paste using a squeeze-type feed box has been proposed, but using this method will make the replacement system complicated and difficult to achieve portability, and if the zinc-air battery is not used for a long time, the zinc paste will agglomerate inside , making it very difficult to add zinc paste by extrusion, and the extrusion method will cause more residues of zinc paste on the feed box, resulting in a lot of waste and difficult to clean up, causing inconvenience to subsequent use

Moreover, due to the viscousness of the zinc paste, its conductivity is reduced and the internal resistance is increased, which leads to a decrease in the power density of the zinc-air battery, which makes it difficult to meet the charging requirements of electronic devices such as outdoor mobile phones.

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