CN-224217659-U - Alkaline zinc-manganese battery

Abstract

The utility model provides an alkaline zinc-manganese battery which comprises a battery steel shell, wherein the upper end of the battery steel shell is provided with a negative electrode current collector component, a positive electrode ring is coaxially embedded in the battery steel shell, a central cavity of the positive electrode ring is sleeved with a separation tube, negative electrode zinc paste is filled in the separation tube, an annular closed cavity is formed by enclosing the top surface of the positive electrode ring, the bottom surface of the negative electrode current collector component, the outer peripheral surface of the separation tube and the inner peripheral surface of the battery steel shell, and a hydrogen storage piece is embedded in the closed cavity and is formed by pressing a hydrogen storage material. The alkaline zinc-manganese dioxide battery can timely transfer and store hydrogen generated in the battery into the hydrogen storage material, so as to prevent the change of the internal air pressure of the battery and the side effect caused by the change of the internal air pressure of the battery.

Inventors

• CHANG HAITAO
• ZHEN YICHAO
• CHEN JUAN

Assignees

• 福建南平南孚电池有限公司

Dates

Publication Date

20260508

Application Date

20250409

Claims (2)

1. 1. The alkaline zinc-manganese battery comprises a battery steel shell, wherein a negative electrode current collector component is assembled at the upper end of the battery steel shell, a positive electrode ring is coaxially embedded in the battery steel shell, an isolating pipe is sleeved in a central cavity of the positive electrode ring, negative electrode zinc paste is filled in the isolating pipe, an annular closed cavity is formed by enclosing the top surface of the positive electrode ring, the bottom surface of the negative electrode current collector component, the outer peripheral surface of the isolating pipe and the inner peripheral surface of the battery steel shell, and the alkaline zinc-manganese battery is characterized in that a hydrogen storage piece is embedded in the closed cavity and is formed by pressing a hydrogen storage material.
2. 2. The alkaline zinc-manganese dioxide cell of claim 1, wherein the hydrogen storage member is a hydrogen storage ring and the separator tube is positioned on the side of the center of the hydrogen storage ring.

Description

Alkaline zinc-manganese battery Technical Field The utility model relates to the field of batteries, in particular to an alkaline zinc-manganese battery. Background The cathode reaction of the alkaline zinc-manganese battery is oxidation of zinc, namely Zn+2OH −→ZnO+H2 O+2e, and the anode reaction is reduction of manganese dioxide, namely 2MnO 2+2H2O+2e−→2MnOOH+2OH−. The overall reaction does not involve the production of hydrogen, and the electrolyte (KOH) only participates in the reaction as an ionic conductor. However, when the anode contains impurities, the battery is overdischarged, high temperature or damaged, side reactions occur inside the battery, thereby generating hydrogen. The accumulation of hydrogen in the sealed battery can lead to the rise of the pressure, destroy the chemical balance in the battery and reduce the discharge efficiency. In addition, excessive hydrogen build-up can also lead to swelling of the cell casing and, in extreme cases, even rupture (especially in high temperature or closed environments), thereby creating a safety hazard. Disclosure of utility model The utility model aims to provide an alkaline zinc-manganese dioxide battery which can transfer and store hydrogen generated in the battery and avoid the change of the internal air pressure of the battery caused by the hydrogen and the side effect generated by the change. The technical scheme includes that the alkaline zinc-manganese dioxide battery comprises a battery steel shell, wherein a negative electrode current collector component is assembled at the upper end of the battery steel shell, a positive electrode ring is coaxially embedded in the battery steel shell, a separation tube is sleeved in a central cavity of the positive electrode ring, negative electrode zinc paste is filled in the separation tube, an annular closed cavity is formed by enclosing the top surface of the positive electrode ring, the bottom surface of the negative electrode current collector component, the outer peripheral surface of the separation tube and the inner peripheral surface of the battery steel shell, and a hydrogen storage piece is embedded in the closed cavity and is formed by pressing a hydrogen storage material. The utility model utilizes the internal idle space of the alkaline zinc-manganese battery, namely an annular closed cavity formed by the top surface of the positive electrode ring, the bottom surface of the negative electrode current collector component, the outer peripheral surface of the isolation tube and the inner peripheral surface of the battery steel shell, and utilizes the physical adsorption or chemical reaction of the hydrogen storage material on the hydrogen to timely transfer and store the hydrogen generated in the battery in the hydrogen storage material by embedding the hydrogen storage piece formed by pressing the hydrogen storage material in the annular closed cavity, so as to prevent the change of the internal air pressure of the battery and a series of side effects generated by the change, such as reduction of discharge efficiency, bulge and rupture of the battery shell, and the like, caused by the hydrogen evolution in the battery. Further, the hydrogen storage part is a hydrogen storage ring, and the isolation pipe is positioned on the ring center side of the hydrogen storage ring. At this time, the hydrogen storage piece surrounds the circumference setting of isolation tube, can play even hydrogen storage's effect. Drawings FIG. 1 is a schematic axial sectional view of an alkaline zinc-manganese dioxide cell according to an embodiment of the utility model; fig. 2 is a schematic top view of a hydrogen storage member according to an embodiment of the present utility model. Detailed Description Preferred embodiments of the alkaline zinc-manganese cell of the present utility model are described in detail below with reference to the accompanying drawings. Referring to fig. 1 and 2, an alkaline zinc-manganese dioxide cell comprises a cell steel shell 10, wherein a negative electrode current collector assembly 20 is assembled at the upper end of the cell steel shell 10, a positive electrode ring 30 is coaxially embedded in the cell steel shell 10, a separation tube 40 is sleeved in a central cavity of the positive electrode ring 30, negative electrode zinc paste 50 is filled in the separation tube 40, an annular closed cavity 60 is formed by enclosing the top surface of the positive electrode ring 30, the bottom surface of the negative electrode current collector assembly 20, the outer peripheral surface of the separation tube 40 and the inner peripheral surface of the cell steel shell 10, a hydrogen storage piece 70 is embedded in the closed cavity 60, and the hydrogen storage piece 70 is formed by pressing a hydrogen storage material; the hydrogen storage member 70 is a hydrogen storage ring, and the isolation tube 40 is located at the center of the hydrogen storage ring. The utility model utilizes the intern