JP2002134124A - Stacked type seawater battery for underwater running body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stacked type seawater battery for a underwater running body, capable of suppressing increase in the leakage current, even if the cross section of a water inlet port or a water exhaust port is made large, and enhancing the volume efficiency. SOLUTION: This battery 1 is used as a propulsion power source of the underwater running body running in the underwater, and is formed by connecting a plurality of cells in series and housing in a housing 2. A water inlet port 6, a water inlet passage 7, the water exhaust port 7, a water exhaust passage 4 are installed in the housing 2, and a partition member 5 for letting branch the flow of seawater or fresh water is installed in at least one of the water inlet passage and the water exhaust passage in the cells.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of using silver chloride, lead chloride or the like as a positive electrode and a magnesium alloy as a negative electrode, and activating them by immersing them in sea water or fresh water. The present invention relates to a stacked seawater battery for an underwater vehicle mounted on an underwater vehicle traveling in water.

[0002]

2. Description of the Related Art A laminated seawater battery for underwater vehicles is activated by being immersed in seawater or freshwater.
A water inlet for introducing seawater or freshwater into the housing containing the battery and a drain for discharging the water are provided.

[0003] Such a laminated seawater battery for underwater vehicles uses a silver alloy, lead chloride, or the like as a positive electrode and a magnesium alloy as a negative electrode, and thus has a series-connected body in which a plurality of cells are connected in series. Thus, a desired voltage is obtained, and a desired power is obtained by forming a series-parallel connection in which a plurality of the series-connected bodies are connected in parallel.

[0004] In addition, the above-mentioned stacked seawater battery for underwater vehicles has a need to uniformly activate all cells.
Seawater or freshwater is supplied collectively to the series-connected body or series-parallel-connected body, and at the same time, seawater or freshwater is discharged from a drain port, and at the same time, insoluble substances generated by the activation are discharged without delay, and the inside of the housing due to reaction heat The structure is such that the rise in temperature of the cells can be suppressed and the leakage current flowing between the cells can be suppressed.
It has a structure as described in Japanese Patent Application Laid-Open No. 4 (1999) -86.

That is, what is described in the above publication is
Water injection passages 17a and 17b corresponding to the two stacked unit cell groups 1 and 2 separated by the center partition plate 12a, respectively.
Drainage channels 20a and 20b are provided to activate each of the stacked unit cell groups 1 and 2.

[0006]

Since the battery described in the above publication is separated into two stacked unit cell groups 1 and 2 by a center partition plate 12a, it is separated from the necessity of obtaining a high voltage. In order to increase the number of stacked unit cell groups, it is necessary to increase the number of center partition plates, and there is a problem that the voltage per unit volume of the battery is reduced.

[0007] Further, those described in the above publications are positive,
Negative plate with large reaction area, or with wider water inlet or drain in consideration of promoting discharge of insoluble substances generated by activation and suppressing temperature rise in the housing due to reaction heat Then, there was a problem that the structure became complicated.

[0008]

According to a first aspect of the present invention, there is provided an underwater vehicle which is mounted on an underwater vehicle which travels underwater and which is used as a propulsion power source. In the stacked-type seawater battery, the battery is configured by arranging a plurality of units each having a positive electrode and a negative electrode bonded to both surfaces of a conductive plate, and forming a positive electrode constituting the unit, a negative electrode constituting an adjacent unit, and the positive electrode and the negative electrode. Forming a single cell in the space between the cells, forming a negative electrode constituting the unit, a positive electrode forming another adjacent unit, and forming another cell in the space between the negative electrode and the positive electrode to form a plurality of cells. And a series-parallel connection in which a plurality of the series-connections are connected in parallel, and a housing for accommodating the battery. The housing activates the battery. For seawater or freshwater enclosure A water introduction port, a water introduction path from the water introduction port to the battery, a drainage port for discharging the introduced seawater or fresh water out of the housing, and a drainage path from the battery to the drainage port, wherein the cell In at least one of the headrace or drainage channel, a partition member for diverting the flow of seawater or freshwater is provided, whereby a member that does not contribute to the battery reaction, such as a central partition plate, is provided. Without providing, according to the number of cells constituting the series connection body,
Since a plurality of water conduits, drainage channels, or both can be provided, the leak current can be suppressed without lowering the voltage per unit volume of the battery.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on its embodiments.

FIG. 1 is a perspective view of a battery shown to explain a laminated seawater battery for an underwater vehicle according to an embodiment of the present invention.

That is, as shown in FIG. 1, the series connection body 10 has two opposing sides 11 in an arc shape and two opposing sides 12 in a straight line. A plurality of units formed by bonding a magnesium alloy to both surfaces of a conductive plate are arranged, and two opposite sides 11 of an arc shape are arranged.
The part 12a of the two opposed straight sides 12 is sealed with resin or the like so that the end faces of the positive electrode, the negative electrode and the conductive plate are not exposed, and the remaining one of the two opposed straight sides 12 is removed.
2b is not sealed, and the positive electrode, the negative electrode, and the end face of the conductive plate are exposed.

FIG. 2A is a longitudinal sectional view showing a state in which the battery is housed in a housing, and FIG. 2B is a transverse sectional view of the same.

That is, as shown in FIGS. 2A and 2B, one cell is formed by a positive electrode constituting the unit, a negative electrode constituting an adjacent unit, and a space between the positive electrode and the negative electrode. A negative electrode constituting the unit, a positive electrode constituting another adjacent unit, and another cell are formed in a space between the negative electrode and the positive electrode to form a structure in which a plurality of cells are connected in series. In order to use the connecting body 10 (shown in FIG. 1) as a battery 1 as a propulsion power source of the underwater vehicle, the connecting body 10 is housed in a housing 2 and the battery 1
Water inlet 6 for introducing seawater or freshwater into the casing 2 for activating the water, a drainage port 7 for discharging the introduced seawater or freshwater to the outside of the housing 2, and from the water introduction port 6 to the battery 1. A water channel 3 and a drain channel 4 extending from the battery 1 to the drain port 7 are provided, and the water channel 3 and the drain channel 4 are sealed with two straight sides 12 (shown in FIG. 1) opposed to each other. So that it is located in the part 12b (shown in FIG. 1) which is not
A partition member 5 for diverting the flow of seawater or freshwater is provided in the water channel 3 and the drain channel 4 of the cell.

The partition member 5 is preferably made of synthetic resin, passivated aluminum, titanium nickel or an alloy thereof, passivated stainless steel, Hastelloy-C alloy, or Inconel (625).

[0015]

As described above, according to the present invention, even if the cross-sectional area of the water inlet or drain is increased without increasing the voltage per unit volume, an increase in leak current can be suppressed. It can contribute to obtaining a high performance laminated seawater battery for underwater vehicles with excellent volume efficiency.

[Brief description of the drawings]

FIG. 1 is a perspective view of a series connection body for explaining a laminated seawater battery for underwater vehicles according to an embodiment of the present invention.

FIGS. 2A and 2B are diagrams showing a stacked seawater battery for underwater vehicles according to an embodiment of the present invention, wherein FIG. 2A is a longitudinal sectional view showing a state where the battery is housed in a housing, and FIG. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery 2 Housing 3 Headrace 4 Drainage 5 Partition member 6 Headrace 7 Drainage

Claims (1)

[Claims] 1. An underwater vehicle that sails underwater and is mounted on an underwater vehicle.
In the laminated seawater battery for an underwater vehicle used as a propulsion power source, the battery is configured by arranging a plurality of units each having a positive electrode and a negative electrode bonded to both surfaces of a conductive plate, and forming a positive electrode constituting the unit. Forming one cell in the space between the negative electrode constituting the adjacent unit and the positive electrode and the negative electrode, forming the negative electrode constituting the unit, the positive electrode constituting the other adjacent unit, and the space between the negative electrode and the positive electrode A series-connected body in which a plurality of cells are connected in series by forming another cell, or a series-parallel connected body in which a plurality of the series-connected bodies are connected in parallel, and has a housing for accommodating the battery. In this case, a water inlet for introducing seawater or fresh water for activating the battery into the housing, a water passage from the water inlet to the battery, and discharging the introduced seawater or freshwater out of the housing. Drains A water drain from the battery to the water outlet; and a partition member for diverting the flow of seawater or fresh water provided in at least one of the headrace and the drain of the cell. For stacked seawater battery.