JPH09147883A - Electrolite-filling battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent disruption of sealed glass vessels at transportation or the like by arranging shock absorbing materials between sealed glass vessel disrupting projections formed on inner walls of battery vessels and the sealed glass vessels. SOLUTION: Plate groups 5 composed of positive electrode plates connected to positive electrode terminals 7, separators and negative electrode plates connected to battery vessels 4 and sealed glass vessels 6 inside which electrolyte 8 is sealed, are housed in the battery vessels 4, and cells 3 and 3 are obtained. Semispherical sealed glass vessel disrupting projections 9 having high hardness are fixed to the center of bottom surfaces in the battery vessels 4 of these cells 3 and 3. Disk-shaped shock absorbing materials 10 where a hole is opened in the center are placed on bottom surfaces in the battery vessels 4. These cells 3 and 3 are vertically housed side by side in a cylindrical battery holder 2, and the positive electrode terminal 7 of the lower stage cell 3 and the battery vessel 4 of the upper stage cell 3 are connected in series to each other, and a specer 11 is inserted between the battery vessel 4 of the lower stage cell 3 and the battery vessel 4 of the upper stage cell 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid pouring type battery used as a power source for emergency equipment used when an emergency occurs.

[0002]

2. Description of the Related Art A normal battery in which an electrode plate group and an electrolytic solution coexist gradually consumes electricity due to self-discharge even when it is left unused. Therefore, if a normal battery is used in an emergency device that is used only in the event of an emergency, even if you try to use it after leaving it for a long time, the battery will be completely discharged and you will not be able to extract electricity. There is a fear that

Therefore, such an emergency device is shown in FIG.
As shown in (1), the liquid-filled battery 1 in which the sealed glass container 6 in which the electrolytic solution 8 is enclosed is housed in the battery container 4 having the electrode plate group 5 is used. Since the electrolyte solution 8 is normally separated from the electrode plate group 5 in this liquid-filled battery 1, there is no risk of self-discharge and it can be stored for a long period of time. Then, at the time of use, a strong impact is applied to break the closed glass container 6, so that the electrode plate group 5 is immersed in the electrolytic solution 8 so that electricity can be supplied.

In the case of the liquid-filled battery 1 described above, the hermetically sealed glass container 6 may be easily destroyed by vibration during transportation or impact such as carelessly dropped during handling. Without knowing it, self-discharge may occur and it may become unusable. However, if the explosive force of the detonator or the impact of a hammer hammered by a spring is received by the operation for starting the use, this closed glass container 6 cannot be useful in an emergency unless it is securely destroyed.

Therefore, conventionally, as shown in FIG.
A liquid injection type battery 1 has been proposed in which a projection 9 is provided on the bottom surface of the battery container 4 and a closed glass container 6 is placed and supported on the thin elastic metal plate 13 above the projection 9. 58-161248). Elastic metal plate 13
Is placed on the convex portion 14a protruding from the support body 14 toward the inner peripheral side, so that it is possible to prevent the closed glass container 6 from dropping downward in normal times. However, liquid injection type battery 1
When a strong impact that pushes up the battery container 4 from below is applied, the closed glass container 6 pushes the thin elastic metal plate 13 downward by inertia, so that the elastic metal plate 13 bends and comes off from the convex portion 14a. Then, the closed glass container 6 falls and the bottom surface collides with the projection 9 and is destroyed.

Further, a large number of radial slits are provided in the elastic metal plate 13, and when a strong impact is applied, the slits are opened to allow the closed glass container 6 to slide downward and the bottom face to the projection 9. A liquid injection type battery 1 which is made to collide has also been proposed in the past (Japanese Patent Laid-Open No. 58-4836).
No. 5).

[0007]

However, in the above-mentioned conventional liquid-filled battery 1, the linear force relationship such as the elastic coefficient of the elastic metal plate 13 is the only factor for the destruction of the closed glass container 6. Rather, whether or not the elastic metal plate 13 bends and is actually disengaged from the convex portion 14a, and whether or not the elastic glass plate 13 actually scrapes the closed glass container 6 through the opening of the slit. An uncertain factor that easily causes variations is added. Therefore, in order to ensure that the closed glass container 6 is destroyed by a relatively small impact force in order to simplify the operation mechanism when using the liquid-filled battery 1, uncertain factors are taken into consideration. Since the elastic metal plate 13 has to be made sufficiently thin, there is a risk that the sealed glass container 6 may be easily broken due to vibration during transportation or inadvertent drop during handling. There is a problem in that the handling of is complicated. On the contrary, in order to prevent the hermetically sealed glass container 6 from being destroyed by an impact that may occur during transportation or handling, the elastic metal plate 1 should be designed with an uncertain factor in mind.
Since it is necessary to make 3 thick enough, this injection type battery 1
In the operation during use, there arises a problem that an extremely large impact force must be applied in order to surely destroy the closed glass container 6. Moreover, in the case of the liquid-filled battery 1 in which a plurality of cells are connected in series in the vertical direction, even if an impact is applied from below, this impact is attenuated to some extent in order while being transmitted between the cells, so that the cells above In order to apply a sufficient shock to the battery, an even larger shock force is required, and there is a problem that it is practically difficult to generate such a shock force.

The present invention has been made in view of the above circumstances, and by providing a cushioning material between the closed glass container and the protrusion for breaking the closed glass container, the closed glass container can be easily formed during transportation or the like. It is an object of the present invention to provide a liquid injection type battery which can be reliably destroyed by applying a comparatively small impact during operation during use without being destroyed.

[0009]

In order to solve the above-mentioned problems, the present invention provides a hermetically sealed glass container in which an electrolytic solution is sealed in a battery container having an electrode plate group consisting of an anode plate and a cathode plate. In the liquid-filled battery in which is stored, the protrusion for breaking the sealed glass container is arranged on the inner wall of the battery container, and the cushioning material is arranged between the protrusion or the base of the protrusion and the sealed glass container. Characterize.

According to the means of (1), since the cushioning material is arranged between the closed glass container and the projection or the base of the projection, when the same impact is applied to the battery container, the sealed glass container uses this cushioning material. Always press the same distance to approach the protrusion. Therefore, whether the sealed glass container is destroyed
Since it depends almost exclusively on the magnitude of the impact force, there is a sufficient difference between the maximum impact force at which this closed glass container is not destroyed and the minimum impact force at which this closed glass container can be reliably destroyed. Can be made smaller. Therefore, the liquid-filled battery of the present invention can be used even when the cushioning material is provided with a sufficient cushioning action so that the sealed glass container is not easily destroyed by an impact that occurs during transportation or handling. In this operation, the hermetically sealed glass container can be reliably destroyed with a relatively small impact force.

The protrusion may be formed directly on the inner wall of the battery container or fixed to the inner wall, or the protrusion having the protrusion may be set on the inner wall of the battery container. Further, the cushioning material may be directly interposed between the protrusion and the closed glass container, or may be interposed between the base of the protrusion and the closed glass container so that the tip of the protrusion and the closed glass container are interposed. A gap may be created.

Further, the projection is arranged on the bottom surface in the battery container, and a cushioning material is arranged between the projection or the bottom surface of the battery container and the bottom surface of the closed glass container.

According to the means of (1), the closed glass container can be collided with the projection and destroyed by applying an upward impact to the bottom of the liquid-filled battery as in the conventional case.

Further, a plurality of unit cells formed for each of the battery containers are vertically connected in series and housed in a battery holder.

According to the means, when an upward impact is applied to the bottom of the lowermost unit cell, this impact is sequentially transmitted to the upper unit cells in the battery holder, and the sealed glass containers of all the unit cells are destroyed. be able to. Moreover, since the sealed glass container can be destroyed by a relatively small impact force in each unit cell, even if the unit cell is a liquid injection type battery in which many unit cells are vertically connected in series, All closed glass containers can be reliably destroyed.

[0016] The liquid-filled battery according to any one of claims 1 to 3, characterized in that the buffer materials (1) to (3) are made of an elastic material.

If the cushioning material is not elastic at all, plastic deformation occurs when the cushioning material is shocked. Therefore, even if the shocking shock is weak, the sealed glass container will be projected repeatedly. There is a risk of reaching the tip of and being destroyed. Therefore, it is preferable that the cushioning material has elasticity to some extent, and it is also possible to use an elastic body such as rubber having sufficient elasticity as the cushioning material as in the above means.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show one embodiment of the present invention. FIG. 1 is a vertical cross-sectional perspective view of a liquid injection type battery, and FIG.
3 is a partial vertical cross-sectional perspective view showing the relationship between the protrusion and the cushioning material, FIG.
Is a vertical cross-sectional perspective view showing another configuration of the cushioning material, and FIG. 4 is a vertical cross-sectional perspective view showing another configuration of the protrusions. In addition, the same numbers are added to the components having the same functions as those of the conventional example shown in FIG.

As shown in FIG. 1, the liquid injection type battery 1 of this embodiment will be described in which a battery holder 2 has two unit cells 3 and 3 connected in series. Each unit cell 3 has an electrode plate group 5 and a sealed glass container 6 housed in a battery container 4. The electrode plate group 5 includes an anode plate connected to the anode terminal 7, a cathode plate connected to the battery container 4 serving as a cathode terminal, and a separator sandwiched between the anode plate and the cathode plate. Further, the closed glass container 6 has an electrolytic solution 8 sealed therein.

As shown in FIG. 1 and FIG.
At the center of the bottom surface of the battery container 4 in, a projection 9 in the form of a semi-spherical steel ball having high hardness is fixed by welding. A disk-shaped cushioning material 10 having a hole in the center is placed on the bottom surface of the battery container 4. Cushioning material 10
Is a shock absorbing material made of foamed plastic, glass fiber non-woven fabric, or the like, has a thickness sufficiently larger than the height of the protrusion 9, and the protrusion 9 is adapted to enter the central hole. Further, as the buffer material 10, a material having a certain degree of acid resistance that does not generate a gas or the like upon contact with the electrolytic solution 8 is used. The closed glass container 6 is placed on the cushioning material 10. As shown in FIG.
When the hole is not provided at the center of the cushioning material 10, the cushioning material 10 is formed to have a thickness that can exert an appropriate cushioning action regardless of the height of the protrusion 9. Further, the projection 9 is not limited to such a hemispherical convex portion, but may be a cross-shaped projection having a triangular cross section as shown in FIG.

As shown in FIG. 1, the two unit cells 3 and 3 are vertically arranged in a cylindrical battery holder 2. Then, the upper surface of the anode terminal 7 of the lower unit cell 3 is welded to the bottom surface of the battery container 4 serving as the cathode terminal of the upper unit cell 3 to be connected in series. Further, a spacer 11 made of ceramic or the like having insulation and rigidity is inserted between the upper end of the battery container 4 of the lower unit cell 3 and the bottom surface of the battery container 4 of the upper unit cell 3 without any gap. ing. Further, the lower end of the lower unit cell 3 contacts the bottom surface of the battery holder 2 directly or via a steel plate (not shown),
An elastic member 12 is interposed between the upper end of the upper unit cell 3 and the inner surface of the upper end of the battery holder 2. Therefore, these unit cells 3 and 3 can move slightly upward in the battery holder 2 by pressing the elastic member 12.

When a shock such as pushing up the bottom surface of the battery container 4 of the lower unit cell 3 through the opening of the bottom surface of the battery holder 2 to the liquid injection battery 1 having the above-mentioned structure, the battery holder 2 itself is Even if it is fixed to the outside, the battery containers 4 and 4 of the upper and lower unit cells 3 and 3 housed inside integrally press the elastic member 12 and move upward. At this time, the battery containers 4, 4 of the upper and lower unit cells 3, 3
Since the spacer 11 having rigidity is inserted between the unit cells without any gap, the impact applied to the lower unit cell 3 is transmitted to the upper unit cell 3 with almost no attenuation.

When the battery containers 4 and 4 move upward as described above, the closed glass containers 6 and 6 press the cushioning material 10 downward due to inertia. However, if the impact is a weak impact of up to about 7 G during transportation or handling, the force of pressing the closed glass containers 6, 6 downward is also small, so the cushioning material 1
This shock is absorbed by the slight depression of 0, and the bottom surface of the closed glass container 6 does not collide strongly with the projection 9. However, when a strong impact of 500 G or more is applied by the explosive force or the spring force of the detonator, the force of pressing the closed glass containers 6 and 6 downward also becomes strong, so the cushioning material 10
Will not be able to withstand this shock. Therefore, the cushioning material 1 in which the bottom surfaces of the closed glass containers 6 and 6 are directly or pressed
Since it strongly collides with the projection 9 through 0, the hermetically sealed glass containers 6 and 6 are surely destroyed.

As described above, according to the liquid pouring type battery 1 of this embodiment, since the closed glass container 6 is placed on the cushioning material 10, the cushioning material 1 is not affected by only a weak impact.
0 absorbs this impact and the bottom surface of the closed glass container 6 has a projection 9
There is no such thing as a strong collision with. Therefore, it is possible to prevent the sealed glass container 6 from being broken by vibration during transportation or impact such that the liquid-filled battery 1 is removed during handling, so that the liquid-filled battery 1 is easily handled. Further, when a shock sufficiently stronger than this is applied, it cannot be absorbed by the cushioning material 10, and the closed glass container 6 strongly collides with the projection 9 and is destroyed. Moreover, whether or not the closed glass container 6 is broken is almost determined by the cushioning material 10.
Since it depends only on the characteristics of (1), there is almost no variation in the magnitude of the impact force required for destruction. Therefore, even if a shock absorbing material 10 having a large shock absorbing effect is used, the sealed glass container 6 can be secured so that the sealed glass container 6 is not easily broken even if a slight impact is applied for transportation or handling. It also eliminates the need for a particularly strong impact force to destroy.

Further, even if the impact force required for surely breaking the closed glass container 6 is made relatively weak, it does not become inconvenient to handle, so that the impact applied to the lower unit cell 3 is attenuated to some extent. Even if it is added to the upper unit cell 3 in the upper stage, the closed glass container 6 of the upper unit cell 3
Can be surely destroyed.

In this embodiment, the two single cells 3,
Although the injection type battery 1 in which 3 are combined is described, the present invention is similarly applied to the injection type battery 1 including only a single battery and the injection type battery 1 in which three or more single cells 3 are combined. It can be carried out.

[0028]

As is apparent from the above description, according to the liquid injection type battery of the present invention, by providing the cushioning material between the closed glass container and the protrusion, it is possible to add the buffer material during transportation and handling. The sealed glass container is prevented from being destroyed by impact, and the sealed glass container can be securely destroyed by applying a relatively small impact force during the operation during use.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a vertical cross-sectional perspective view of a liquid injection type battery.

FIG. 2 shows an embodiment of the present invention and is a partial vertical cross-sectional perspective view showing the relationship between the protrusions and the cushioning material.

FIG. 3 shows an embodiment of the present invention and is a vertical cross-sectional perspective view showing another configuration of the cushioning material.

FIG. 4 shows an embodiment of the present invention and is a vertical cross-sectional perspective view showing another configuration of the protrusion.

FIG. 5 shows a conventional example and is a vertical cross-sectional front view of a liquid-filled battery.

[Explanation of symbols]

 1 Injection Battery 2 Battery Holder 3 Single Cell 4 Battery Container 5 Electrode Plate Group 6 Sealed Glass Container 8 Electrolyte 9 Protrusion 10 Buffer Material

Claims (4)

[Claims] 1. A liquid injection battery in which a sealed glass container containing an electrolytic solution is housed in a battery container provided with an electrode plate group including an anode plate and a cathode plate, wherein a sealed glass is provided on an inner wall of the battery container. A liquid injection type battery characterized in that a container breaking projection is arranged and a cushioning material is arranged between the projection or the base of the projection and the closed glass container. 2. The projection is arranged on the bottom surface in the battery container, and a cushioning material is arranged between the projection or the bottom surface of the battery container and the bottom surface of the closed glass container. The injection type battery according to 1. 3. The injectable battery according to claim 2, wherein a plurality of cells formed in each of the battery containers are vertically connected in series and housed in a battery holder. 4. The liquid-filled battery according to claim 1, wherein the cushioning material is made of an elastic material.