JPH0845514A - Seawater battery - Google Patents

Abstract

PURPOSE:To increase the functioning area of positive electrodes, and to improve the charging performance, by providing a corrugated plate form or a saw-tooth form unevenness on the positive electrodes held in a ring form. CONSTITUTION:The positive electrodes 1 are held in a ring form between a synthetic resin positive electrode insulator 81 provided circularly at the lower side of the peripheral edge of a metallic upper frame 71, and a synthetic resin positive electrode insulator 82 provided circularly at the upper side of the peripheral edge of a metallic upper frame 72. On the positive electrodes 1 held in a ring form, a corrugated plate form or a saw-tooth form unevenss is provided, and through holes 12 are provided at the parts of the recesses of the uneven surfaces opposing to a negative electrode 2 to facilitate the flow of the seawater. The discharge performance can be improved consequently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seawater battery, and more particularly to a seawater battery using magnesium or magnesium alloy as a cathode and oxygen dissolved in seawater as an anodizing agent. .

[0002]

2. Description of the Related Art Seawater batteries that use magnesium or magnesium alloy as the cathode and oxygen dissolved in seawater as the anodic oxidizer can discharge for a long period of time, so they can be used for marine marker lights, buoy lights and fish catching fish. It is used as a power source for lights.

The conventional structure of such a seawater battery is shown in FIG.
As shown in the vertical sectional view of FIG. 6 and the horizontal sectional view of FIG. Insulator 82
And a cathode insulator 91 provided in the central portion of the upper frame 71 and a cathode insulator 92 provided in the central portion of the lower frame 72. The anode 1 is a plate made of a metal such as nickel, copper, silver or the like having a relatively small ionization tendency or an alloy mainly composed of these metals, and the cathode 2 has an ionization tendency. It is a relatively large metal such as magnesium, aluminum, zinc, or lead, or an alloy mainly composed of these metals, and is one that obtains an electromotive force by reducing oxygen dissolved in seawater on the surface of the anode 1. is there. In addition,
10 is an anode lead wire electrically connected to the anode 1.
Reference numeral 11 is a cathode lead wire electrically connected to the cathode terminal 3 fitted in the cathode 2.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Since the amount of oxygen dissolved in seawater is extremely low, by using a plate made of a metal such as nickel or an alloy mainly containing these metals for the anode 1, the working area of the anode 1 with respect to the working area of the cathode 2 can be reduced. However, if the distance between the anode 1 and the cathode 2 is made too large, the discharge performance will deteriorate.

[0005]

In order to solve the above problems, the present invention provides an anode insulator annularly provided on the upper peripheral surface of a lower frame and an anode insulator annularly provided on the lower peripheral surface of an upper frame. A plurality of anodes sandwiched in a ring between, and a columnar cathode held between a cathode insulator provided in the central portion of the lower frame and a cathode insulator provided in the central portion of the upper frame. A seawater battery in which oxygen dissolved in seawater is reduced on the surface of each of the annularly held anodes to obtain an electromotive force, wherein each of the annularly held anodes has a corrugated plate shape or a sawtooth shape. The present invention is characterized in that a concavo-convex shape is provided, and a through hole is provided in a portion of the concavo-convex that becomes a concave portion with respect to the cathode.

[0006]

Therefore, according to the present invention, a plurality of anodes are annularly held between the anode insulator annularly provided on the upper peripheral surface of the lower frame and the anode insulator annularly provided on the lower peripheral surface of the upper frame. ,
Moreover, since each of the anodes held in the annular shape is provided with corrugated plate-shaped and sawtooth-shaped irregularities, the working area of the anode 1 can be made larger than the working area of the cathode 2, whereby the discharge performance is improved. Can be improved.

[0007]

EXAMPLES The present invention will be described below based on examples.

FIG. 1 is a longitudinal sectional view of a seawater battery of the present invention, FIG.
Is a transverse cross-sectional view of the seawater battery of the present invention, and parts having the same functions as those in FIGS. 5 and 6 are given the same reference numerals.

In FIGS. 1 and 2, reference numeral 1 denotes a plurality of corrugated plate-like anodes made of a metal such as nickel, copper, silver or the like having a relatively small ionization tendency or an alloy mainly composed of these metals.
Is a columnar cathode made of a metal having a relatively large ionization tendency such as magnesium, aluminum, zinc, lead or the like or an alloy mainly composed of these metals. An anode insulator 81 made of synthetic resin provided and an anode insulator 82 made of synthetic resin annularly provided on the upper surface of the peripheral edge of the metal lower frame 72 are annularly sandwiched, and the cathode 2 is made of the metal. It is held between a synthetic resin cathode insulator 91 provided in the central portion of a metallic upper frame 71 and a synthetic resin cathode insulator 92 provided in the central portion of a metallic lower frame 72. . In FIGS. 1 and 2, reference numeral 7 is a seawater circulation port provided in the upper frame 71 and the lower frame 72.

The upper end of each anode 1 is connected to an anode current collector ring embedded in an anode insulator 81, and the lower end is an anode insulator 82.
An anode terminal 4 for connecting an anode lead wire 10 is attached to a part of the anode 1 which is connected to an anode current collecting ring embedded therein.

A cathode terminal 3 is provided on at least one end face of the cathode 2 so that a cathode lead wire 11 can be connected to the cathode 2.
Is inserted.

The synthetic resin 51 is provided between the upper end of the anode 1 and the anode insulator 81 holding the upper end thereof, and the synthetic resin 51 is provided between the lower end of the anode 1 and the anode insulator 82 holding the lower end thereof. 52 is injected to prevent seawater from entering between the anode 1 and the anode lead wire 10 to form a local battery.

The upper end surface of the cathode 2 and the cathode insulator 91
And synthetic resin 62 between the lower end surface of the cathode 2 and the cathode insulator 92 so that seawater enters between the cathode terminal 3 and the cathode 2 and the cathode lead wire 11. This prevents the formation of local batteries.

FIG. 3 is a perspective view of an essential part of the seawater battery of the present invention. A through hole 12 is provided in a portion of the anode 1 which becomes a recess with respect to the cathode 2 so that the seawater can flow well. There is.

The above-mentioned seawater battery of the present invention and FIGS.
When the conventional seawater battery shown in FIG. 4 was immersed in seawater having a concentration of 3% and the discharge characteristics were compared, the results shown in FIG. 4 were obtained.

It can be seen from FIG. 4 that the seawater battery of the present invention has a higher discharge voltage than the conventional seawater battery.

[0017]

As described above, according to the present invention, the discharge voltage of a seawater battery using oxygen dissolved in seawater as an anodizing agent can be increased.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a seawater battery of the present invention.

2 is a cross-sectional view of the seawater battery of FIG.

FIG. 3 is a perspective view of a main part of the seawater battery of the present invention.

FIG. 4 is a diagram comparing the discharge characteristics of the seawater battery of the present invention and a conventional seawater battery.

FIG. 5 is a vertical cross-sectional view of a conventional seawater battery.

6 is a cross-sectional view of the seawater battery of FIG.

[Explanation of symbols]

 1 Anode 2 Cathode 3 Cathode Terminal 4 Anode Terminal 51,52 Synthetic Resin 61,62 Synthetic Resin 7 Seawater Circulation Port 71 Upper Frame 72 Lower Frame 81,82 Anode Insulator 91,92 Cathode Insulator 10 Anode Lead Wire 11 Cathode Lead wire 12 Through hole

Claims (3)

[Claims] 1. A plurality of anodes sandwiched annularly between an anode insulator annularly provided on the upper peripheral surface of a lower frame and an anode insulator annularly provided on the lower peripheral surface of an upper frame, and the lower frame. Consisting of a columnar cathode held between the cathode insulator provided in the central part of the and the cathode insulator provided in the central part of the upper frame, dissolved in seawater at the surface of each of the anodes sandwiched in the ring shape. A seawater battery for reducing electromotive force to obtain an electromotive force, wherein each of the anodes sandwiched in the ring is provided with corrugated and sawtooth-shaped irregularities. On the other hand, the seawater battery is characterized in that a through hole is provided in a portion which becomes a recess. 2. The seawater battery according to claim 1, wherein a synthetic resin is injected between a cathode insulator and a cathode provided in the central portion of the upper frame and the central portion of the lower frame. . 3. The seawater battery according to claim 1, wherein a synthetic resin is injected between the anode insulators provided on the upper frame and the lower frame and each of the anodes sandwiched in a ring shape.