JPS5856468B2 - air-magnesium battery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid injection type air-magnesium battery.

Air-zinc batteries are the most common negative electrode replaceable batteries, and there are many literatures on them.

However, in most air-zinc batteries, a concentrated alkaline solution is added to the electrolyte, and mercury is added to the zinc negative electrode.

For this reason, it is dangerous to handle, and it is difficult to dispose of the electrolyte and electrodes after use.

In view of the above points, the present invention relates to an inexpensive air-magnesium battery that can obtain a desired voltage by stacking mass-produced single-cell batteries in a desired number.

Furthermore, air-magnesium batteries are safe to handle because they can use neutral electrolytes such as seawater or saline, and they do not contain harmful substances such as mercury when disposed of after use. So there is no problem.

The electromotive reaction of this battery is as follows.

The air-magnesium battery of the present invention shown above includes a plurality of single bottomed box-shaped air electrode frames that house magnesium negative electrode plates therein, and connects the positive electrode terminal fixed to the frame to the adjacent frame. A plurality of frames are connected by a connector with a negative lead wire protruding from the side of the frame body and hanging from the adjacent frame body, and a plurality of frame bodies are stacked and fitted by a pair of bolt penetration ears provided on the outside of the frame body. , and when the bolts are tightened, the ribs of the closed part of the frame abut the ribs of the open window of the adjacent frame via the air electrode, and the air electrode is fixed, and the upper part of the adjacent frame is It is characterized by having structures that engage with each other.

One embodiment will be described below with reference to the drawings.

FIG. 1 is a perspective view of a battery according to an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of a bottomed box-shaped air electrode frame, FIG. 3 is a perspective view of the frame as seen from the opposite side, and FIG. FIG. 4 is a perspective view of the presser plate, and FIG. 5 is a sectional view taken along the line A--x in FIG. 2.

Reference numeral 1 denotes a box-shaped air electrode frame with a bottom that houses a magnesium negative electrode plate 8, and a positive electrode terminal 2 fixed to the frame protrudes from the side of the adjacent frame and hangs down from the adjacent frame. It is connected to a connector 3 with a negative lead wire.

The air electrode frame 1 has a pair of bolt penetration ears 4 and 5 that are integrally provided on the outer side of the air electrode frame 1, and the electrode frame is fixed with bolts 6 and nuts 7.

As shown in FIG. 3, one side of the air electrode frame 1 is closed and provided with a recessed rib 13, and on the other side, as shown in FIG. An inner rib 14 is provided in the open window so as to abut against a rib 13 provided in the closed portion.

An air electrode 15 is bonded to the window frame so as to close the open window.

Therefore, when holding plates 9 and 10 are arranged on both sides and clamped with bolts as shown in Fig. 1, the air electrode 15 is fixed from both sides by the ribs 13 and 14, thereby preventing the air electrode from blistering after liquid injection. It is.

In addition, the inner rib 14 prevents damage to the air electrode 15 due to taking in and out when replacing the magnesium negative electrode plate 8 housed in the frame 1, and can also maintain a constant distance between the air electrode 15 and the magnesium negative electrode plate 8. .

For example, when there is no inner rib, the air electrode 15 is damaged and the voltage deteriorates after replacing the negative electrode two to three times, but when the inner rib 14 according to the present invention is provided, it can withstand more than 10 times of negative electrode replacement and discharge. There was no damage and the casing could be used at constant voltage.

FIG. 4 shows the end presser plates 9 and 10 when stacked, and the presser plate 9 that contacts the air electrode 15 has a rib 16 similar to the rib 13 provided at the closed portion of the frame 1. is established,
A groove 17 is formed in the presser plate 10 that abuts the closed portion so that a rib 13 provided on the closed portion is inserted.

A pair of bolt penetration ears 4 and 5 are integrally provided on the sides of the holding plates 9 and 10, respectively, in order to be clamped with bolts.

In addition, since the air electrode frame 1 is molded from synthetic resin, both sides are deformed due to the heat generated when the battery is discharged, creating a gap that may make it difficult to insert the magnesium negative electrode plate 8 when reusing it. be.

In order to prevent this, the upper part of the air electrode frame 1 is provided with a hook-shaped engagement structure on one side that engages with the adjacent frame, as shown in FIG. Piece 18
The other side is provided with a locking piece 19 for holding it.

The above structure suppresses deformation of the frame members due to heat generated by the battery.

Further, the interlocking structure may be any structure that does not come off even under the influence of heat, and is not limited to the above embodiments.

As described above, the present invention can provide a high-performance and inexpensive injection type air-magnesium battery in which a desired voltage can be obtained by combining a plurality of single frames as necessary, and this invention has great industrial value. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an air-magnesium battery showing an embodiment of the present invention, Fig. 2 is a partially cutaway perspective view of a box-shaped air electrode frame with a bottom, and Fig. 3 is a reverse view of the frame shown in Fig. 2. Perspective view from the side,
FIG. 4 is a perspective view of the holding plate, and FIG. 5 is a sectional view taken along the line A- in FIG. 2. 1... Air electrode frame body, 4, 5... Ear part,
8... Negative electrode plate, 9, 10... Holding plate,
13.16...Rib, 14...Inner rib, 15...Air electrode, 17...Groove, 1
8... Engagement piece, 19... Locking piece.

Claims (1)

[Claims] 1. A box-shaped air electrode frame with a bottom is used to accommodate a magnesium negative electrode plate, and one side of the frame has a closed portion having ribs on the outside;
On the opposite side, a plurality of air electrode frames are laminated and sandwiched, each of which has a concave step formed in a part of the closed part and an air electrode bonded to an open window with an inner rib at a location corresponding to the rib of the closed part. Air-magnesium battery. 2. Claim No. 2, in which a plurality of laminated air electrode frames are sandwiched by holding plates having ribs on the air electrode surface and holding plates having grooves for inserting the ribs in the closed portions, arranged on both sides. The air-magnesium battery according to item 1. 3. The air magnesium battery according to claim 1, wherein the air electrode frame has an engaging piece that engages with the frame adjacent to the upper side on one side, and a locking piece that receives and stops the other side.