CN205595406U

CN205595406U - alkaline zinc-manganese battery

Info

Publication number: CN205595406U
Application number: CN201620413377.4U
Authority: CN
Inventors: 唐录; 徐燕玲; 施斌斌
Original assignee: Zhongyin Ningbo Battery Co Ltd
Current assignee: Zhongyin Ningbo Battery Co Ltd
Priority date: 2016-05-09
Filing date: 2016-05-09
Publication date: 2016-09-21
Anticipated expiration: 2026-05-09

Abstract

The utility model discloses an alkaline zinc-manganese dioxide battery, including the box hat, the positive polar ring that the manganese dioxide semiconductor was made, tubbiness diaphragm paper, calamine cream and electrolyte, positive polar ring is located the outside in the box hat, tubbiness diaphragm paper is placed in the centre bore of positive polar ring, tubbiness diaphragm paper includes all lateral walls and bottom, the calamine cream dress is in tubbiness diaphragm paper, the bottom downside of tubbiness diaphragm paper is provided with the barrier layer that delays electrolyte in the calamine cream to the box hat bottom corruption, the advantage is that the separation agent of box hat bottom can avoid alkaline electrolyte to accumulate in the notch of box hat bottom and positive terminal, delay the corruption of electrolyte to the box hat bottom in the calamine cream, prolong alkaline zinc-manganese dioxide battery's storage life.

Description

Alkaline zinc-manganese battery

Technical Field

The utility model relates to the field of batteries, especially, relate to an alkaline zinc-manganese dioxide battery.

Background

The traditional alkaline zinc-manganese battery adopts a reverse pole type structural design, namely, the negative pole is arranged inside the battery, and the positive pole is arranged outside the battery, so that the battery positive pole with relatively weaker conductivity is positioned outside the battery and is in contact with a steel shell which is used as a battery active material container and also used as a positive pole current collector in a larger area, the current density of the positive pole is effectively reduced, and the improvement of the power density of the battery is facilitated.

The structure of the existing alkaline zinc-manganese dioxide battery is shown in fig. 1, and comprises a steel shell, a positive electrode ring made of manganese dioxide semiconductor, a barrel-shaped diaphragm paper and zinc paste filled in the diaphragm paper, wherein one end of the steel shell is provided with a convex positive electrode terminal. The positive electrode ring 2 is in a hollow tubular shape, and the bottom of the barrel-shaped diaphragm paper 3 is in direct contact with the bottom of the steel shell 1.

The alkaline cell steel shell generally adopts a nickel-plated steel shell, and two common steel shell nickel-plating processes are currently used, namely a pre-nickel-plated steel shell (firstly plating nickel on the surface of a steel strip and then punching the steel shell), and a post-nickel-plated steel shell (punching the steel shell by using an electroless nickel-plated steel strip and then putting the steel shell into a plating bath for nickel plating). When the nickel plating process is adopted, because the steel shell has a small caliber and is deep, most of current can be robbed by the part of the opening end due to the electromagnetic effect during electroplating, and only small current enters the steel shell, so that the electroplating blind hole is easily formed in the bottom in the steel shell. The nickel plating on the bottom of the inner side of the steel shell is weakest compared with the nickel plating on other places. In the preparation process of the alkaline zinc-manganese dioxide battery, air exists at the contact part of the positive terminal and the diaphragm paper more or less, and in the long-time storage process, alkaline electrolyte (the alkaline electrolyte mainly exists in the zinc paste in a large amount) in the zinc paste easily permeates the diaphragm paper to accelerate corrosion to the weak part of the steel shell coating under the action of oxygen, so that the storage life of the alkaline zinc-manganese dioxide battery is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a basic zinc-manganese dioxide battery that can prolong storage life is provided, fills the separation agent bottom the box hat, plays the isolation between box hat bottom and calamine cream, delays the corruption of the alkaline electrolyte in the calamine cream to the box hat, plays the storage life of extension basic zinc-manganese dioxide battery.

Solve the technical problem of the utility model that need provide technical scheme: alkaline zinc-manganese dioxide battery, including anodal ring, tubbiness diaphragm paper, calamine cream and the electrolyte that steel-shelled, manganese dioxide semiconductor made, anodal ring be located the outside in the steel-shelled, tubbiness diaphragm paper is placed in the centre bore of anodal ring, tubbiness diaphragm paper includes all lateral walls and bottom, the calamine cream dress is in tubbiness diaphragm paper, tubbiness diaphragm paper's bottom downside be provided with the barrier layer that delays electrolyte in the calamine cream to the corrosion of steel-shelled bottom.

The barrier layer is positioned in the central hole and positioned between the bottom of the steel shell and the bottom of the tubby diaphragm paper.

The steel shell bottom is provided with bellied positive terminal, the barrier layer extend to the inner chamber of positive terminal.

The barrier layer is made of manganese dioxide semiconductor material.

The relation between the thickness H1 of the barrier layer and the wall thickness H2 of the positive electrode ring is as follows: 0.5H2-and-H1-and-2H2.

The barrier layer is in a powder shape, a flake shape or a fluid shape.

Compared with the prior art, the utility model has the advantages that the existence of bottom air can be avoided to the separation agent of box hat bottom, avoids alkaline electrolyte to accumulate in the notch of box hat bottom and positive terminal, delays the corruption of electrolyte to the box hat bottom in the calamine cream, prolongs the storage life of alkaline zinc-manganese dioxide battery. The barrier layer is made of manganese dioxide semiconductor materials, so that when the battery discharges, the barrier layer can also be used as a positive active substance to participate in a discharging reaction, and the electrical property of the battery is improved.

Drawings

FIG. 1 is a schematic diagram of the prior art;

FIG. 2 is a schematic view of the present invention;

fig. 3 is a cross-sectional view of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Alkaline zinc-manganese cell, including steel casing 1, anodal ring 2 that the manganese dioxide semiconductor made, tubbiness diaphragm paper 3, calamine cream 4 and electrolyte, anodal ring 2 is located the outside in steel casing 1, and tubbiness diaphragm paper 3 is placed in the centre bore of anodal ring 2, and tubbiness diaphragm paper 3 includes week lateral wall 31 and bottom 32, and calamine cream 4 dress is in tubbiness diaphragm paper 3, and the bottom downside of tubbiness diaphragm paper 3 is provided with the barrier layer 5 that delays the corruption of electrolyte in the calamine cream 4 to steel casing 1 bottom. The barrier layer 5 is in the form of powder or flakes or fluid.

The barrier layer 5 is positioned in the central hole and positioned between the bottom of the steel shell 1 and the bottom of the barrel-shaped diaphragm paper 3.

The bottom of the steel shell 1 is provided with a raised positive terminal 11, and the barrier layer 5 extends to the inner cavity of the positive terminal 11.

The barrier layer 5 is made of manganese dioxide semiconductor material. The barrier layer is made of manganese dioxide semiconductor materials, so that when the battery discharges, the barrier layer can also be used as a positive active substance to participate in a discharging reaction, and the electrical property of the battery is improved.

The relationship between the thickness H1 of the barrier layer 5 and the wall thickness H2 of the positive electrode ring 2 is: 0.5H2-and-H1-and-2H2. The storage life of the alkaline zinc-manganese battery can be prolonged, and the electrical property of the battery can be improved.

Example 1:

and (3) taking the steel shell embedded with the positive electrode ring according to the normal working procedure, filling 0.1g of the manganese dioxide semiconductor material into the bottom of the steel shell, and then assembling the LR6 battery. The new electrical property of the battery and the liquid leakage rate of the battery after the battery is stored for 30 days at the high temperature of 90 ℃ (note that the battery is obtained by testing the battery after the battery is placed in an environment with the new electrical property of 20 +/-2 ℃ for two days, and the testing environment temperature is 20 +/-2 ℃), and the electrical property testing indexes and the cut-off potential are as follows: the 50mA interval is 1h/8h,24h/d, and the cut-off potential is 1.0V; the voltage is increased for 1h/d within 250mA, and the cut-off potential is 0.9V;1500mW pulses (1500mW2s, 650mW28s) 10T/1h,24h/d, and cut-off potential of 1.05V. 9 cells were tested for each discharge mode and the average results are shown in table 1. 40 batteries were stored at 90 ℃ for 30 days, and the number of battery leaks was recorded, and the average results are shown in Table 2.

Example 2:

and (3) taking the steel shell embedded with the positive electrode ring according to the normal working procedure, filling 0.3g of the manganese dioxide semiconductor material into the bottom of the steel shell, and then assembling the LR6 battery. The new electrical property of the battery and the leakage number of the battery after the battery is stored for 30 days at a high temperature of 90 ℃ are tested, and the test results are respectively shown in the table 1 and the table 2.

Example 3:

taking 0.2g of manganese dioxide semiconductor material, pressing into a sheet solid with a proper size, taking a steel shell embedded with a positive electrode ring according to a normal procedure, embedding the prepared sheet solid at the bottom of the steel shell, and then assembling into an LR6 battery. The new electrical property of the battery and the leakage number of the battery after the battery is stored for 30 days at a high temperature of 90 ℃ are tested, and the test results are respectively shown in the table 1 and the table 2.

Example 4:

taking 0.4g of manganese dioxide semiconductor material, pressing into a sheet solid with a proper size, taking a steel shell embedded with a positive electrode ring according to a normal procedure, embedding the prepared sheet solid at the bottom of the steel shell, and then assembling into an LR6 battery. The new electrical property of the battery and the leakage number of the battery after the battery is stored for 30 days at a high temperature of 90 ℃ are tested, and the test results are respectively shown in the table 1 and the table 2.

Comparative example:

the LR6 cell was prepared by normal process without the mixture added to the bottom of the steel can. The new electrical property of the battery and the leakage number of the battery after the battery is stored for 30 days at a high temperature of 90 ℃ are tested, and the test results are respectively shown in the table 1 and the table 2.

Table 1: electrical property data

Table 2: number of battery leakage after 30 days of storage at 90 DEG C

Item	Number of leakage
		Comparative example	21
Example 1	13
		Example 2	8
Example 3	0
		Example 4	0

The alkaline zinc-manganese dioxide battery provided by the utility model is introduced in detail, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment is only used for helping understanding the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. Alkaline zinc-manganese dioxide battery, including steel casing, the anodal ring that manganese dioxide semiconductor made, tubbiness diaphragm paper, calamine cream and electrolyte, the anodal ring be located the outside in the steel casing, tubbiness diaphragm paper is placed in the centre bore of anodal ring, tubbiness diaphragm paper includes all lateral walls and bottom, the calamine cream dress is in tubbiness diaphragm paper, its characterized in that the bottom downside of tubbiness diaphragm paper be provided with the barrier layer that delays electrolyte in the calamine cream to the corrosion of steel casing bottom.

2. The alkaline zinc-manganese dioxide cell of claim 1, wherein said barrier layer is located within said central opening between the bottom of the can and the bottom of the paper separator.

3. The alkaline zinc-manganese dioxide cell as claimed in claim 1, wherein the bottom of the steel can is provided with a raised positive terminal, and the barrier layer extends into the inner cavity of the positive terminal.

4. The alkaline zn-mn cell of claim 1, wherein the barrier layer is formed from a manganese dioxide semiconductor material.

5. The alkaline zinc-manganese dioxide cell of claim 2, wherein the thickness H1 of the barrier layer is related to the wall thickness H2 of the positive electrode ring by: 0.5H2-and-H1-and-2H2.

6. The alkaline zinc-manganese dioxide cell of claim 1, wherein the barrier layer is in the form of powder, flakes or fluid.