JPH06105621B2 - Secondary battery device - Google Patents

Description

The present invention relates to a secondary battery device, and more particularly to a redox flow type secondary battery device capable of charging a large capacity at sea.

[Conventional technology]

Conventionally, when supplying electric power at sea, a lead storage battery or an alkaline storage battery is placed on a floating stand such as a raft and floated above the sea. However, since the lead storage battery and the alkaline storage battery are heavy in weight, there is a drawback that the facility load of the pedestal for mounting them becomes large. Moreover, since it is difficult to mount a large-capacity storage battery on the floating table, it is difficult to supply a large amount of electric power at sea.

[Problems to be Solved by the Invention]

An object of the present invention is to solve the above-mentioned problems of the prior art, to reduce the facility load of the floating platform, and to enable large-capacity charging and stable power supply at sea, and a redox flow type secondary battery device. To provide.

[Means for Solving the Problems]

The present invention provides a redox flow type secondary battery in which at least one of a positive active material and a negative active material is stored in a storage container as a liquid, and a float is provided in the liquid storage container or the liquid storage container and the battery body. The present invention relates to a secondary battery device characterized in that it is held in water or on water.

In the present invention, to provide a float in the liquid storage container,
An independent float may be attached, or a part of the solution storage container may be partitioned and gas may be injected therein to serve as the float. It is preferable to install a floating structure such as a solar cell on the liquid storage container and / or the secondary battery, which is floated by floating, via an appropriate stand.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to Examples.

FIG. 1 is a schematic diagram of a secondary battery device showing an embodiment of the present invention.

This device includes a plurality of active material tanks 1 that also serve as buoys, a float 9, a cell stack (battery body) 3, a pump 4, and a control box 6 that is installed on the float 9 and that controls the charging and discharging of the battery. And a solar cell panel 5 and a pipe 2. The buoy active material tank 1 contains a liquid (solution,
The positive and negative active materials, which are suspensions, emulsions and slurries), are stored separately. The tank 1 is made of plastic or the like, adjusted to have a specific gravity of 1 or less and held in water 7, and communicates with the cell stack 3 via a pipe 2.

In such a configuration, the positive and negative active materials in the buoy active material tank 1 are respectively pumped by the pump 4 to the pipe 2
And is supplied to the cell stack 3 through which the charging / discharging is started in the cell stack 3. On the other hand, the energy generated by the solar cell panel 5 is used as a power source for the pump 4 and the control box 6 and is used for charging the cell stack 3.

In the device of the present embodiment, the active material tank of the redox flow type secondary battery is held in the water 7 as the buoy active material tank 1, so that the load applied to the pedestal 9 can be reduced and the facility load thereof can be reduced. it can. Further, the large cell stack 3 can be installed and a large capacity can be charged, so that stable power supply can be achieved.

The apparatus of the present invention can supply stable electric power to an undersea ranch provided on a lighthouse or a fish reef via an electric wire, as shown in FIGS. 2 and 3, for example.

Embodiment 2 FIG. 4 is a schematic view of a secondary battery device showing another embodiment of the present invention.

This device is provided with a raft 11 made of a material in which a metal aggregate is covered with a resin foam, a plurality of floats 12 made of a resin foam provided on the raft 11, and an underwater portion of the raft 11 which is provided with an active part. The secondary battery 10 in which the substance tank and the battery main body are integrated, and the raft
It is mainly composed of a solar battery panel 5 and a pump 4 using a double-axis motor, which is provided on the upper part of the water 11.

The solar cell panel 5 has a width of 1 m, a length of 2.5 m, and a weight.
A 200 Wp output solar cell of 50 kg was used. The material of the panel was plastic except for the metal plate required for heat dissipation. As the secondary battery 10, a plastic or the like is used for the outer frame so that the specific gravity is about 1 and the self-levitation ability is provided.
A secondary battery having a weight of 200 kg was used.

In such a structure, the secondary battery is operated by the pump 4 and charging / discharging is started. On the other hand, the energy generated by the solar cell panel 5 is used as power for the pump 4 and charging energy for the secondary battery. The battery capacity of the secondary battery was examined using this secondary battery device, and 100 W of electric power could be stably supplied for 10 consecutive days.

In addition, the above-mentioned 200 kg secondary battery was used for the raft 1
It is impossible to install on top of 1.

〔The invention's effect〕

According to the secondary battery device of the present invention, it is possible to reduce the facility burden on the floating table, and to charge a large capacity and stably supply power at sea.

[Brief description of drawings]

FIG. 1 is a schematic view of a secondary battery device showing an embodiment of the present invention, FIGS. 2 and 3 are diagrams showing an example of use of the secondary battery device of the present invention, and FIG. It is a schematic diagram of a secondary battery device showing another embodiment of the invention. 1 ... Buoy active material tank, 2 ... Piping, 3 ... Cell stack, 4 ... Pump, 5 ... Photovoltaic cell panel, 6 ... Control box, 7 ... Underwater, 8 ... Water, 9 ... Float, 10 ...
Secondary battery, 11 ... raft, 12 ... floating.

Claims (2)

[Claims] 1. A redox flow type secondary battery in which at least one of a positive active material and a negative active material is stored as a liquid in a storage container, and a float is provided in the liquid storage container or the liquid storage container and the battery body. , A secondary battery device characterized by holding these in or on water. 2. A secondary battery, wherein the liquid storage container according to claim 1 or the solution storage container and the battery main body are floated on the water surface, and a floating structure such as a solar cell is held thereon. apparatus.