JPH097611A - Water activated battery - Google Patents

Abstract

PURPOSE: To install an ampoule destroying seat plate in order to obtain stable electric performance with a small quantity by uniformly destroying an ampoule in which an electrolyte is contained to uniformly inject the electrolyte between electrodes of a group of cells in a battery for testing electric performance of a water activated battery. CONSTITUTION: This battery is provided with an ampoule 7 in which an electrolyte 6 is contained in an internal cavity part of a cell group 3 in which an electrode plate 1 and a separator 2 are alternately laminated. In a battery for testing and evaluating electric performance by using an ampoule destroying pin 16, an ampoule destroying seat plate 15 is installed in the lower portion of the ampoule 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is characterized in that it is possible to easily evaluate the performance of a battery without actually evaluating the performance of the battery under the conditions of actual use, and to shorten development and test cost. And the liquid injection battery.

[0002]

2. Description of the Related Art This injection battery is always inactive, but it is activated by destroying an ampoule containing an electrolytic solution and injecting it into a plate group to supply electric power to the outside. It is a type of storage battery.

[0003] The shelf life is therefore very good,
It can be used after storage for 10 years without any change in battery performance immediately after manufacture.

This injection battery is equipped with a destruction mechanism for destroying the ampoule containing the electrolytic solution and a unit cell group in which electrode plates and separators are alternately laminated, and the ampoule is contained in the internal cavity of the unit cell group. It is a battery that is activated by impact and rotation immediately before use, destroys ampoules by impact, injects electrolyte solution into unit cells by centrifugal force due to rotation, supplies power, and is a flying object. It is used as a power source for telemeters.

A conventional liquid injection battery will be described below with reference to FIG. In FIG. 3, reference numeral 1 is a hollow disc-shaped electrode plate,
Electrodepositing lead dioxide on the positive electrode and lead on the negative electrode and stacking them alternately with the paper-punched separators 2 form a unit cell group 3.

Reference numeral 4 denotes a positive and negative electrode hollow disk-shaped collector plate, on the outer periphery of which a polyvinyl chloride resin is injection-molded to form a peripheral resin coating layer 5.

Reference numeral 6 denotes an electrolytic solution, which is an aqueous solution containing perchloric acid as a main component, and is enclosed in a glass ampoule 7 and housed inside the unit cell group 3.

Reference numeral 8 denotes a lower lid, which is a reinforced resin molding having a protrusion in the center of the inside, and a spring plate 9 is incorporated in the inside thereof.
The spring plate 9 is a reversing type spring made by punching out a spring material, and has a structure having a function of breaking the glass ampoule 7.

Reference numeral 10 is an upper lid formed of reinforced insulating resin, and holds an output terminal 11 for supplying electric power.

Reference numeral 12 is a conductive lead wire, which is connected to the output terminal 11 and the positive and negative electrode hollow disk-shaped collector plates 4 by soldering.

An outer can 13 is made of iron or stainless steel and has a structure for holding internal components.

To activate the battery, an impact is applied in the direction of arrow A, the spring plate 9 is inverted, the glass ampoule 7 is broken by the protrusion of the lower lid 8, and the electrolytic solution 6 is added to the unit cell group 3. It is adapted to be activated by being injected by centrifugal force into and to be supplied with electric power from the output terminal 11.

As a method for confirming the electric performance of this type of liquid-filled battery, a test device that gives rotation in synchronization with an impact is required, and a battery discharge test device under the same conditions as a flying object cannot be provided at low cost. After breaking the ampoule by applying a drop impact at, set it on the rotation tester and inject the electrolytic solution into the unit cell group by centrifugal force to grasp the electric performance, but use perchloric acid as the electrolytic solution Since the resistance of the electrolytic solution was low, the electrolytic solution that flowed out at the time of impact caused a partial short circuit in the unit cell group, and the electrical characteristics of the battery could not be completely grasped.

Therefore, as shown in FIG. 4, a battery using the lower lid with a hole 14 in which the raised portion of the lower lid is drilled is manufactured, and the electric performance is grasped.

The test method is as follows: After the battery is set in a rotation tester and given rotation, the ampoule breaking pin 16 is pushed into the hole of the lower lid 14 with a hole to break the glass ampoule 7, and the electrolytic solution 6 is centrifuged by a centrifugal force. Is injected into the unit cell group 3 to check the electric performance.

[0016]

However, in the method of destroying the glass ampoule 7 shown in FIG. 4, the glass ampoule 7 is unevenly cracked, and some of them have a hole only at the bottom of the glass ampoule 7, Since the electrolyte solution 6 is not uniformly poured into the unit cell group 3, stable electrical performance cannot be obtained, and a large amount of tests are required to confirm the electrical performance, which results in high cost and variation in performance. There is an inconvenience that it is necessary to disassemble the battery to determine the cause of the above from the injection amount of the electrolytic solution 6 from the unit cell group 3.

[0017]

In order to solve the above problems, a liquid injection battery of the present invention comprises an ampoule containing an electrolytic solution in an internal cavity of a unit cell group in which electrode plates and separators are alternately laminated. In a battery configuration, an electric performance test evaluation battery using an ampoule breaking pin is characterized in that an ampoule breaking seat plate is installed below the ampoule.

[0018]

By installing the ampoule breaking seat plate at the lower part of the ampoule, the way the ampoule breaks is improved, and the electrolyte is uniformly injected into the unit cell group so that stable electric performance can be obtained. Become.

Further, the performance evaluation can be easily performed with a small test quantity, and the conventional problems can be solved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a sectional view of a liquid injection battery according to the present invention. The basic structure and material of the battery are the same as those of the conventional battery shown in FIG. 4, and the same members as those of the conventional battery are denoted by the same reference numerals and detailed description thereof is omitted.

In the present invention, the ampoule breaking seat plate 15 is arranged at the bottom of the glass ampoule 7. The material of the ampoule breaking seat plate 15 is phenol resin or acrylic resin, and its thickness is preferably about 0.3 to 2.0 mm.
It should be noted that a groove having a large thickness may be grooved as shown in FIG. 2 in order to facilitate breakage and to improve dispersion of the electrolytic solution 6.

The ampoule breaking seat plate 15 is shown in FIG.
As shown in, a phenol resin is used as the material, the outer diameter is the same as that of the glass ampoule 7 and is 20 mm, the thickness is 1.0 mm, and a cross groove 17 having a width of 1 mm and a depth of 0.7 mm is formed in the groove 17. The processed product was used.

The method for testing the electrical performance of this battery is as follows.
Hit the ampoule breaking pin 16 through the hole to break the glass ampoule 7 with the ampoule breaking seat plate 15, and the electrolytic solution 6
Is injected into the unit cell group 3 by centrifugal force to obtain electric performance.

[0025]

As described above, in the liquid injection battery of the present invention, by disposing the ampoule breaking seat plate under the glass ampoule, the glass ampoule is evenly broken through the ampoule breaking seat plate in the electrical performance test. , The electrolyte is uniformly poured into the unit cell group, and stable electric performance can be obtained. From this, in the battery development and quality confirmation tests, a small amount of tests and highly reliable electric performance results can be obtained, and a highly reliable battery can be supplied.

[Brief description of drawings]

FIG. 1 is a sectional view of an injection battery showing an embodiment of the present invention.

FIG. 2 is a perspective view of an ampoule breaking seat plate used in an embodiment of the present invention.

FIG. 3 is a sectional view of a conventional liquid injection battery.

FIG. 4 is a cross-sectional view of a conventional liquid injection battery with a hole drilled in the lower lid.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrode plate 2 Separator 3 Unit battery group 4 Current collector plate 5 Exterior resin coating layer 6 Electrolyte solution 7 Glass ampoule (electrolyte solution container) 8 Lower lid 9 Spring plate 10 Upper lid 11 Output terminal 12 Conductive lead wire 13 Exterior can 14 Lower lid with hole 15 Ampoule breaking seat plate 16 Ampoule breaking pin 17 Groove

Claims (1)

[Claims] 1. A battery structure comprising an ampoule containing an electrolytic solution in an internal cavity of a unit cell group in which electrode plates and separators are alternately laminated, and a battery for electrical performance test evaluation using an ampoule breaking pin, wherein: A liquid injection battery characterized in that an ampoule breaking seat plate is installed under the ampoule.