CN201060897Y

CN201060897Y - Composite anode battery

Info

Publication number: CN201060897Y
Application number: CN200720124708.3U
Authority: CN
Inventors: 王荣; 陈昌国; 胡力玫
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-13
Filing date: 2007-07-13
Publication date: 2008-05-14
Anticipated expiration: 2017-07-13

Abstract

A composite anode battery comprises a conductive outer cylinder, a manganese dioxide cathode, a magnesium alloy or zinc alloy anode, an isolation layer, a carbon rod, an end cover and an insulating pad; the method is characterized in that: the magnesium alloy or zinc alloy anode is a magnesium alloy or zinc alloy inner sleeve which is arranged in the conductive outer cylinder and forms a composite anode with the outer cylinder; an isolating layer is arranged between the composite anode and the manganese dioxide cathode powder. The isolation layer is a composite isolation layer. Compared with the magnesium-manganese battery in the prior art, the magnesium-manganese battery obtained by the utility model has longer service life and more reliable performance due to the phenomenon of liquid leakage caused by perforation. Compare with the zinc-manganese cell among the prior art, the utility model discloses the zinc-manganese cell that obtains with low costs more than 25%, including the effect of compound isolation layer, the internal resistance reduces, and discharge efficiency improves about 20%.

Description

Composite anode battery

Technical Field

The utility model relates to a magnesium manganese or zinc manganese battery technical field, concretely relates to take composite anode's battery structure.

Technical Field

In the prior art, magnesium manganese or zinc manganese batteries generally adopt a magnesium or zinc anode integral cylinder production process, and since magnesium or zinc is used as an anode and a container, the actual utilization rate of non-ferrous magnesium or zinc in the batteries is only about 30 percent. When magnesium is used as both container and anode, the volume of magnesium hydroxide is sharply increased to break the battery, and the magnesium alloy cylinder must be thickened by times to cause more waste.

The battery isolation paper in the prior art has the defect of large internal resistance, so that the discharge efficiency is low.

Disclosure of the invention

The utility model aims at providing a composite anode battery, it is applicable to magnesium manganese cell and also is applicable to zinc-manganese cell. Due to the adoption of the isolation layer with the composite structure, the internal resistance can be reduced, and the battery discharge efficiency is higher. And mercury and cadmium are not added, so that the environment-friendly requirement is met. The production cost of the battery is reduced by more than 25%, and the battery is beneficial to saving resources.

The technical scheme adopted for achieving the purpose is as follows: the composite anode battery comprises a conductive outer barrel, a manganese dioxide cathode, a magnesium alloy or zinc alloy anode, an isolating layer, a carbon rod, an end cover and an insulating pad; the method is characterized in that: the magnesium alloy or zinc alloy anode is a magnesium alloy or zinc alloy inner sleeve which is arranged in the conductive outer cylinder and forms a composite anode with the outer cylinder; an isolating layer is arranged between the composite anode and the manganese dioxide cathode powder.

The isolation layer is a composite isolation layer, and the composite isolation layer is provided with low-density wood pulp paper, a PVA layer and high-density wood pulp paper which are arranged from outside to inside in sequence. Wherein, the PVA layer is also used as a bonding layer of two layers of wood pulp paper and forms a moisturizing layer together with the low-density wood pulp paper.

The conductive outer cylinder can be an aluminum alloy outer cylinder or a conductive plastic outer cylinder.

Drawings

Fig. 1 is a schematic structural section of the present invention.

In the figure: 1-a conductive outer cylinder, 2-a magnesium alloy or zinc alloy inner sleeve, 3-a composite isolation layer, 4-an insulation pad, 5-a manganese dioxide cathode, 6-a carbon rod, 7-an end cover, 8-an insulation ring and 9-a grading ring.

Detailed Description

Referring to the attached figure 1, the composite anode battery in the figure comprises a conductive outer cylinder 1 and a manganese dioxide cathode 5, wherein a magnesium alloy or zinc alloy anode is a magnesium alloy or zinc alloy inner sleeve 2 which is arranged in the conductive outer cylinder and forms a composite anode with the outer cylinder; and an isolating layer is arranged between the composite anode and the manganese dioxide cathode 5 powder.

The isolating layer can adopt pulp layer paper and a paste layer in the prior art or adopt a composite isolating layer in the embodiment, and the composite isolating layer is provided with low-density wood pulp paper, a PVA layer and high-density wood pulp paper which are arranged outwards and inwards (from the outer barrel to the inside) in sequence. The PVA layer is used as a bonding layer of two layers of wood pulp paper and forms a moisturizing layer together with the low-density wood pulp paper.

The low-density wood pulp paper is 100-250 g/m wood pulp paper, and the high-density wood pulp paper is 45-75 g/m wood pulp paper.

Example 1: manufacture of magnesium-manganese battery

The magnesium alloy inner sleeve is made of magnesium alloy containing 1 percent of calcium and 1.5 percent of rare earth metal, the isolating layer adopts the composite isolating layer, the cathode is electrolytic manganese dioxide, zinc bromide, water and acetylene black, the cathode current collector is a carbon rod, an R20 type battery is assembled, and the test result of the product is as follows:

3.9 omega is discharged continuously, the final voltage is 0.9V, the discharge time of the magnesium-manganese battery is 1500 minutes, and the phenomenon of liquid leakage and perforation does not occur.

Example 2: production of Zn-Mn cell

The zinc alloy inner sleeve is made of zinc alloy containing 3% of aluminum, the isolating layer adopts the composite isolating layer, the cathode is natural manganese dioxide, zinc chloride, water and acetylene black, the cathode current collector is a carbon rod, an R20 type battery is assembled, and the test results of the product are as follows:

3.9 omega is discharged continuously, the final voltage is 0.9V, and the discharge time of the battery is 350 minutes (240 minutes is national standard). In the same discharge time, compared with the zinc-manganese battery with the traditional structure, the material cost of the battery of the utility model is 1500 yuan per ten thousand batteries.

According to the above tests it was demonstrated that: according to the utility model discloses the magnesium manganese battery who obtains compares with the magnesium manganese battery among the prior art, because the phenomenon that can not appear the perforation weeping and life is longer, the performance is more reliable. Compare with the zinc-manganese cell among the prior art, the utility model discloses the zinc-manganese cell that obtains with low costs more than 25%, including the effect of compound isolation layer, the internal resistance reduces, and discharge efficiency improves about 20%.

Claims

1. A composite anode battery comprises a conductive outer cylinder (1), a manganese dioxide cathode (5), a magnesium alloy or zinc alloy anode, an isolating layer, a carbon rod (6), an end cover (7) and an insulating pad (4); the method is characterized in that: the magnesium alloy or zinc alloy anode is a magnesium alloy or zinc alloy inner sleeve (2) and is arranged in the conductive outer cylinder to form a composite anode with the conductive outer cylinder; an isolating layer is arranged between the composite anode and the manganese dioxide cathode powder.

2. The composite anode battery according to claim 1, wherein: the isolation layer adopts composite isolation layer (2), composite isolation layer outside-in is low density wood pulp paper, PVA layer and high density wood pulp paper in proper order.

3. The composite anode cell according to claim 1, wherein: the conductive outer cylinder (1) is an aluminum alloy outer cylinder or a conductive plastic outer cylinder.

4. The composite anode cell of claim 2, wherein: the low-density wood pulp paper is 100-250 g/m wood pulp paper, and the high-density wood pulp paper is 45-75 g/m wood pulp paper.