JP2008047495A - Liquid injection type battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid injection type battery in which an electrolytic solution is surely retained in a power generating part at flying, and which is stable in output and high in reliability. <P>SOLUTION: This is the liquid injection type battery equipped with an ample in which the electrolytic solution is enclosed, the power generating part including a plurality numbers of laminated unit cells, an ample housing part to house the ample, a power generating part housing part to house the power generating part, as well as a structural body having a liquid injection passage to communicate the ample housing part and the power generating part housing part, and an exhaust passage. The ample and the power generating part are arranged at the opposing position via the injection passage, and the unit cell includes an anode, a cathode, and a separator arranged between the anode and the cathode, the separator has a left side part corresponding to the left end brim part of the anode and the cathode, a right side part corresponding to the right end brim part of the anode and the cathode, the bottom part corresponding to the lower end brim part of the anode and the cathode, a left folding part extending to the right side part side from the upper end of the left side part, and a right folding part extending to the left side part side from the upper end of the right side part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a non-swivel type liquid injection type battery that is activated only by a launch impact. More specifically, the present invention relates to a small-sized liquid injection type battery.

  Conventionally, in a liquid injection type battery, a large acceleration is given to the launch of a flying object equipped with the liquid injection type battery, and the ampoule enclosing the electrolyte in the liquid injection type battery is destroyed by the acceleration of the impact. . At the same time as the impact force from the launch, the flying object swirls to apply centrifugal force to the injection type battery, and the electrolyte flows into the power generation unit located around the ampoule, generating voltage and activating the battery. To do. Thus, the injection type battery is used as a power supply unit for a fuze of a flying object that turns after launch (for example, Patent Document 1).

  By the way, in recent years, application of a liquid injection type battery is demanded as a power supply unit that is activated only by a launch impact without turning. However, in the above-described liquid injection type battery, there is a problem that the battery is not activated because the electrolytic solution does not flow into the power generation unit arranged around the ampoule only by the launch impact.

Therefore, in order to solve the above problem, a non-turning type liquid-injection battery that is activated only by a launch impact has been studied. Here, FIGS. 8 and 9 are schematic longitudinal sectional views of a side surface and a front surface of a conventional non-swirl type injection type battery.
The injection type battery includes an ampoule 31 in which an electrolytic solution is sealed; a power generation unit 32 including a plurality of stacked single cells; an ampoule storage unit 31a for storing the ampoule 31, and a power generation unit storage unit 32a for storing the power generation unit 32. And a structure 34 having a liquid injection path 38 and an exhaust path 39 communicating the ampoule storage section 31a and the power generation section storage section 32a. The ampoule storage part 31 a and the power generation part storage part 32 a are arranged at positions facing each other through the liquid injection path 38.

The structure 34 is made of stainless steel and is housed in a bottomed cylindrical stainless steel case 36. In addition to the ampoule storage part 31a and the power generation part storage part 32a, the structure 34 isolates the exhaust hole 39a that forms a part of the exhaust path 39, and the ampoule storage part 31a and the power generation part storage part 32a. It has a space 35a for installing the ampoule breaking mechanism 35.
In the space part 35a, an ampoule destruction mechanism 35 that isolates the ampoule storage part 31a and the power generation part storage part 32a is installed. The ampoule destruction mechanism 35 communicates the ampoule storage part 31a and the power generation part storage part 32a. It has a liquid injection path 38, an exhaust hole 39 b that forms a part of the exhaust path 39, and a protrusion 37 provided on the ampoule storage section 31 a side. The exhaust passage 39 is formed by exhaust holes 39 a and 39 b, and the protrusion 37 is for breaking the ampoule 31.

  In the ampoule housing 31a, an ampoule 31 in which an electrolytic solution made of a perchloric acid aqueous solution is enclosed is installed. The power generation unit 32 in which the separators 44 and the electrode plates 45 are alternately arranged is stored in the power generation unit storage unit 32a. As the electrode plate 45, for example, a substrate in which a positive electrode made of a lead dioxide layer is formed on one surface of a substrate made of a nickel-plated steel plate by a plating method and a negative electrode made of a lead layer is formed on the other surface by a plating method is used. It is done. The separator 44 includes a left side portion, a right side portion, and a bottom portion corresponding to the left end edge, right end edge, and lower end edge of the electrode plate 45, respectively. The separator 44 and the electrode plate 45 form a recess 47 into which the electrolyte solution flows. Has been. The power generation unit 32 is arranged so that the opening of the recess 47 faces the liquid injection path 38 side, and the ampoule 31 and the power generation unit 32 are linearly arranged in the direction of the arrow X shown in FIG. Has been placed.

  Temporary lids 40 are respectively disposed on the upper part of the ampoule storage part 31a and the lower part of the power generation part storage part 32a so that the electrolyte does not leak outside. A pair of lead wires 42 a and 42 b that connect the output terminals 41 a and 41 b and the power generation unit 32 are arranged between the structure 34 and the case 36. The opening of the case 36 is sealed by covering the upper part of the case 36 and the temporary cover 40 disposed above the ampoule storage part 31a with a resin battery cover 43 made of, for example, polyethylene.

The operation of the injection type battery will be described.
When a force due to a launch impact is applied to the injection type battery in the direction of arrow Y shown in FIG. 8, the ampoule 31 is broken, and the enclosed electrolyte is scattered outside. Since the ampoule 31, the power generation unit 32, and the liquid injection path 38 are arranged in a straight line, even when there is no turning, the electrolyte passes through the liquid injection path 38 in the recess 47 of the power generation unit 32 due to the launch impact. (In the direction of arrow X in FIG. 8), a voltage is generated. At this time, since the inside of the battery is sealed, the volume of air into which the electrolytic solution has flowed into the power generation unit storage part 32a passes through the exhaust path 39 and is exhausted to the ampoule storage part 31a.

However, there are cases where the flying object is swung after the flying object on which the injection type battery is mounted is fired and a force due to the launch impact is applied to the injection type battery and the electrolytic solution flows into the power generation unit. At this time, when the centrifugal force is applied to the liquid injection type battery, the electrolytic solution in the recess 47 moves in the direction of the arrow shown in FIG. 10, so that a part of the electrolytic solution is scattered outside the power generation unit and the battery output May cause instability or degradation.
Japanese Patent Laid-Open No. 10-302811

  Accordingly, the present invention solves the above-mentioned problem, and even when the power is turned after a force due to a shooting impact is applied, the electrolytic solution is securely held in the power generation unit, and a highly reliable liquid injection type battery having a stable output. The purpose is to provide.

  An injection type battery of the present invention includes: an ampule enclosing an electrolyte; a power generation unit including a plurality of stacked single cells; an ampoule storage unit for storing the ampoule; a power generation unit storage unit for storing the power generation unit; And a structure having a liquid injection path and an exhaust path communicating the ampoule storage part and the power generation part storage part, and the ampoule and the power generation part are arranged at positions facing each other through the liquid injection path. The single cell includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, and the separator includes a left side corresponding to a left end edge of the positive electrode and the negative electrode, A right side corresponding to a right edge of the positive electrode and the negative electrode, a bottom corresponding to a lower edge of the positive electrode and the negative electrode, a left bent portion extending from an upper end of the left side to the right side, and the right side From the top of It has a right bent portion extending in serial left side, a.

It is preferable that the left side, the right side, and the bottom form a recess.
The angle between the left bent portion and the left side portion and the angle between the right bent portion and the right side portion are preferably 45 to 135 °, respectively.
The angle between the left bent portion and the left side portion and the angle between the right bent portion and the right side portion are preferably 45 to 90 °, respectively.
It is preferable that the structure includes an ampoule breaking mechanism that separates the ampoule housing part and the power generation unit housing part, and the ampoule breaking mechanism includes the liquid injection path.
It is preferable that the ampoule breaking mechanism has a protrusion on the ampoule storage part side.

  Even when the power is turned after the force due to the launch impact is applied, the electrolytic solution is securely held in the power generation unit, and a highly reliable liquid-injection battery having a stable output can be provided.

As an embodiment of the present invention, a non-turning type liquid-injection battery will be described below. 1 and 2 are schematic longitudinal sectional views of the front and side surfaces of the injection type battery of the present invention, respectively.
The liquid injection type battery of the present embodiment includes an ampoule 1 in which an electrolytic solution is sealed; a power generation unit 2 including a plurality of stacked single cells; an ampoule storage unit 1a that stores the ampoule 1; and a power generation unit that stores the power generation unit 2 And a structure 4 having a liquid injection path 8 and an exhaust path 9 communicating with the ampoule storage section 1a and the power generation section storage section 2a. The ampoule storage part 1 a and the power generation part storage part 2 a are arranged at positions facing each other through the liquid injection path 8.

The structure 4 is made of stainless steel and is housed in a bottomed cylindrical stainless steel case 6. In addition to the ampoule storage part 1a and the power generation part storage part 2a, the structure 4 isolates the exhaust hole 9a that forms part of the exhaust path 9, and the ampoule storage part 1a and the power generation part storage part 2a. It has a space 5a for installing the ampoule breaking mechanism 5 to be installed.
The space 5a is provided with an ampoule destruction mechanism 5 that isolates the ampoule storage 1a and the power generation unit storage 2a. The ampoule destruction mechanism 5 is made of stainless steel, and the ampoule storage 1a and the power generation unit storage 2a, a liquid injection path 8 that communicates with 2a, an exhaust hole 9b that forms part of the exhaust path 9, and a projection 7 that is provided on the ampoule storage section 1a side. The exhaust passage 9 is formed by exhaust holes 9 a and 9 b, and the projection 7 is for breaking the ampoule 1.

  In the ampoule housing 1a, for example, an ampoule 1 in which an electrolytic solution made of a perchloric acid aqueous solution is enclosed is installed. The power generation unit storage unit 2a includes a plurality of single cell power generation units 2 configured by alternately arranging separators 24 and electrode plates 25 in a direction perpendicular to the direction of the arrow X shown in FIG. It is arranged.

3 is an enlarged view (sectional view) of the power generation unit 2 shown in FIG. 2, and FIG. 4 is a perspective view of the power generation unit 2 shown in FIG.
The single cell 26 constituting the power generation unit 2 includes a positive electrode 23 made of lead dioxide, a negative electrode 21 made of lead, and a separator 24 arranged with a gap formed between the positive electrode 23 and the negative electrode 21. When producing this power generation unit 2, for example, a positive electrode 23 made of a lead dioxide layer is formed by plating on one surface of a substrate 22 made of nickel-plated steel, and a plating method is formed on the other surface of the substrate 22. An electrode plate 25 obtained by forming a negative electrode 21 made of a lead layer is used.

  In the single cell 26, the separator 24 is disposed between the positive electrode 23 and the negative electrode 21 at the left and right edge portions and the lower edge portion of the positive electrode 23 and the negative electrode 21, and the positive electrode 23, the negative electrode 21, and the separator 24, A concave portion (a U-shaped portion) 27 into which the electrolytic solution flows is formed. And the electric power generation part 2 is arrange | positioned so that the opening part of the recessed part 27 of each single cell 26 may face upward (the liquid injection path 8 side), and the ampoule 1 and the electric power generation part 2 are FIG. Are arranged linearly in the direction of the arrow X shown in FIG.

  The separator 24 is bent inward at the opening end of the recess 27. That is, the separator 24 is disposed between the left end 29 a disposed between the left end edge of the positive electrode 23 and the left end edge of the negative electrode 21, and between the right end edge of the positive electrode 23 and the right end edge of the negative electrode 21. The right side 29b, the bottom 28 disposed between the lower end edge of the positive electrode 23 and the lower end edge of the negative electrode 21, the upper end of the left side 29a and the upper end edge of the right side 29b. It consists of a left bent portion 30a bent to the 29b side and a right bent portion 30b bent to the left side 29a side. By providing the left bent portion 30a and the right bent portion 30b, the electrolyte that has flowed into the concave portion 27 due to the centrifugal force does not scatter outside the power generating portion 2 even if the injection type battery turns.

  The angle θ1 formed between the left bent portion 30a and the left side portion 29a and the angle θ2 formed between the right bent portion 30b and the right side portion 29b are preferably 45 to 135 °, respectively. In particular, since the electrolytic solution that has passed through the liquid injection path 8 can surely flow into the recess 27 of the power generation unit 2, the angles θ1 and θ2 are more preferably 45 to 90 °.

As shown in FIGS. 5 and 6 showing the cases where the angles θ1 and θ2 are 45 ° and 85 °, when the angles θ1 and θ2 are 45 to 90 °, the left bent portion 30a and the right bent portion 30b It becomes the structure which inclines below from the upper end of the right side part 29b, and enters the recessed part 27 inside. Since the electrolyte flowing from the liquid injection path 8 onto the left bent part 30a and the right bent part 30b flows on the left bent part 30a and the right bent part 30b toward the opening of the recess 27, the electrolytic solution that has passed through the liquid injection path 8 is used. The liquid surely flows into the power generation unit 2.
Thereafter, even if the injection type battery is swung and centrifugal force is applied to the injection type battery, the electrolyte is directed in the directions of the arrows shown in FIGS. 5 and 6 due to the presence of the left bent part 30a and the right bent part 30b. And does not flow out of the power generation unit 2.

  Further, as shown in FIG. 7 showing the case where the angles θ1 and θ2 are 135 °, when the angles θ1 and θ2 are greater than 90 ° and less than or equal to 135 °, the left bent portion 30a and the right bent portion 30b It becomes the structure which inclines upward from the upper end of the part 29b. In the case of the configuration shown in FIG. 7, in order to ensure that the electrolytic solution flows into the recess, it is preferable to arrange the liquid injection path 8 having a diameter smaller than the width of the opening just above the opening of the recess 27. After that, even if the battery turns and centrifugal force is applied, the electrolyte moves in the direction of the arrow shown in FIG. 7 due to the presence of the left bent portion 30a and the right bent portion 30b. Does not flow out.

The size of the electrode plate 25 (that is, the positive electrode 23 and the negative electrode 21) is, for example, 7 to 11 mm in length, 5 to 15 mm in width, and 0.13 to 0.16 mm in thickness.
When the size of the electrode plate 25 is in the above range, the thickness of the separator 24 (that is, the distance between the positive electrode 23 and the negative electrode 21) may be, for example, 1 to 2 mm. Moreover, the left bent part 30a and the right bent part 30b have a length from the base to the tip of 1 to 8 mm, for example. The heights of the left and right side portions 29 a and 29 b correspond to the vertical dimension of the electrode plate 25, and the length of the bottom portion 28 corresponds to the horizontal dimension of the electrode plate 25.

The length from the base to the tip of the left bent portion 30a, the length from the base to the tip of the right bent portion 30b, and the angles θ1 and θ2 may be different, but the opening of the recess 27 is at the center. The lengths of the left bent part 30a and the right bent part 30b, and the angles θ1 and θ2 are the same from the viewpoint of being formed and allowing the electrolyte to easily and uniformly flow into the power generation part 2 and from the viewpoint of productivity. Is preferred.
Moreover, since the diameter of the liquid injection path 8 is 0.5 mm or more, when the bending angle and the length of both are the same, the distance between the tip of the left bent portion 30a and the tip of the right bent portion 30b (recessed portion 27). The width of the opening is preferably 1.5 mm or more.

  As a result, even when a force applied by impact is applied and the electrolytic solution flows into the power generation unit 2 and then the flying body including the injection type battery turns and centrifugal force is applied to the injection type battery, the separator 24 is provided. The left bent portion 30a and the right bent portion 30b can suppress the outflow of the electrolyte solution to the outside, so that the electrolyte solution is reliably held in the power generation unit 2 and a liquid-injected battery having a stable output is provided. be able to.

  In the ampule breaking mechanism 5, for example, four liquid injection paths 8 are provided around the protrusion 7 at equal intervals. In the present embodiment, as shown in FIGS. 1 and 2, the four liquid injection paths 8 are provided at equal intervals around the protrusion 7, but if the performance required for the liquid injection type battery is exhibited, There are no particular limitations on the shape and number of the liquid injection paths. In order to allow the electrolyte to flow into each unit cell 26 simultaneously and evenly, a plurality of liquid injection paths 8 may be provided above each unit cell 26 so as to face the opening of each recess 27. Further, as the shape of the liquid injection path, there may be a single inlet for the liquid injection path, branched inside to form a plurality of flow paths, and a plurality of outlets.

Temporary lids 10 are respectively arranged on the upper part of the ampoule storage part 1a and the lower part of the power generation part storage part 2a so that the electrolyte does not leak outside. A pair of lead wires 12 a and 12 b connecting the output terminals 11 a and 11 b and the power generation unit 2 are disposed between the structure 4 and the case 6.
And the opening part of case 6 is sealed by covering the upper part of case 6 and the ampoule accommodating part 1a with the resin battery lid | cover 13 which consists of polyethylene, for example.

The operation of the above injection type battery will be described.
When a force due to a shooting impact is applied in the direction of the arrow Y shown in FIG. Scatter. Since the ampoule 1, the power generation unit 2, and the liquid injection path 8 are arranged in a straight line, the electrolyte solution passes through the liquid injection path 8 and into the concave portion 27 of the power generation unit 2 due to a launching impact although it is non-turning. Inflow (direction of arrow X in FIG. 1).

  At this time, the electrolytic solution is held in the concave portion 27. However, since the left bent portion 30a and the right bent portion 30b are provided in the opening portion of the concave portion 27, the electrolytic solution is recessed by the centrifugal force even if the battery turns. There is no splashing outside. Since the inside of the battery is hermetically sealed, the volume of air into which the electrolytic solution has flowed into the power generation unit storage unit 2a passes through the exhaust path 9 and is exhausted to the ampoule storage unit 1a. Thereby, since electrolyte solution can flow into the electric power generation part 2 quickly and uniformly, a battery voltage generate | occur | produces reliably and a battery can be activated quickly. Moreover, a stable output can be obtained.

In the above description, the ampoule breaking mechanism 5 has the protrusion 7 for breaking the ampoule 1 on the ampoule housing part 1a side, but even if the ampoule breaking mechanism 5 is not provided with the protrusion 7, only the force received by the launch impact is provided. The ampule 1 can be destroyed by colliding with the ampule destruction mechanism 5.
Examples of the present invention will be described in detail below. However, the present invention is not limited to these examples.

Example 1
A liquid injection type battery having the same structure as that shown in FIGS. 1 and 2 was produced.
After the cellulose nonwoven paper is cut into a U-shape corresponding to the size of the recess, the left end of the U-shaped nonwoven paper so that the angles θ1 and θ2 shown in FIG. And the right end portion are bent inwardly (toward the bottom portion 28), so that a separator 24 having a left bent portion 30a and a right bent portion 30b (thickness: 1 mm, height (side portion length): 10 mm, lateral width (bottom portion) Length): 6.5 mm, width of opening: 1.5 mm).

  As the power generation unit 2, a power generation unit constituted by three single cells 26 in which the separators 24 and the electrode plates 25 obtained above were alternately arranged was used. As shown in FIG. 3, a positive electrode 23 made of a lead dioxide layer is formed on one surface of a substrate 22 made of a nickel-plated steel plate on the electrode plate 25 by plating, and a negative electrode 21 made of a lead layer by plating on the other surface. What formed was used. An ampoule 1 made of glass was filled with an electrolytic solution made of a perchloric acid aqueous solution.

<< Comparative Example 1 >>
The drawing paper is cut into a U-shape corresponding to the size of the recess, and the separator does not have a bent portion (thickness: 1 mm, height (side length): 10 mm, width (bottom length)): 6.5 mm, width of the opening: 4.5 mm).
A liquid injection type battery was produced in the same manner as in Example 1 except that this separator was used.

<< Comparative Example 2 >>
As shown in FIG. 11, a conventional liquid injection type battery in which a power generation unit was arranged around an ampoule was produced. A laminated body made up of the pressing plate 54, the spacer 55, and the power generation unit 56 sandwiched between the pressing plate 54 and the spacer 55 was accommodated in the exterior case. An ampoule 59 in which an electrolytic solution 58 is sealed is disposed in a cavity 57 formed in the center of the laminate. Iron plates 60a and 60b are arranged above and below the hollow portion 57 so that the electrolytic solution 58 does not leak to the outside.

  Lead wires 61 a and 61 b that connect the terminal pins 52 a and 52 b and the power generation unit 56 are arranged in the gaps between the outer case 51, the spacer 55, and the power generation unit 56. Then, a resin 62 was filled in a gap between the outer case 51 and the pressing plate 54, the spacer 55, and the power generation unit 56 and an upper portion of the spacer 55. The opening of the outer case 51 was sealed with a battery lid 53 provided with terminal pins 52a and 52b.

  In this battery, when an impact is applied to the battery in the direction of the arrow in FIG. 11, the ampoule 59 collides with the bottom of the cavity 57 and is destroyed. When a turning force is applied to the battery, the electrolytic solution scattered outside due to the destruction of the ampule 59 flows into the power generation unit 56 disposed around the ampule 59 by the centrifugal force, and the battery is activated.

  At normal temperature, the ampule was broken by applying an impact force corresponding to a launch impact (10000 G) without turning the batteries of Example 1 and Comparative Examples 1 and 2 obtained above. Thereafter, the battery was swung at a rotational speed of 15000 rpm. The voltage rising condition at this time and the voltage stability after the voltage rising were examined. The evaluation results are shown in Table 1.

Regarding the voltage rise characteristics in Table 1, the time until the voltage rises to 4 V after applying a firing impact (voltage rise time) is within 5 ms, and the voltage rise time is good, and the voltage rise time is Was over 5 ms.
In addition, regarding voltage stability, when the voltage does not fall below the specified 4V or when the voltage stability is good 10 seconds after the launch impact is applied, the voltage is less than the specified 4V. Was marked with x.

In the battery of Example 1 using the separator having the bent portion in the opening of the recess, the voltage was excellent, and the electrolyte was reliably held in the power generation unit, so that good voltage stability was obtained. On the other hand, in the battery of Comparative Example 1 using the separator having no bent portion in the opening of the recess, the voltage rising characteristics were good, but after the voltage rising, the voltage was lower than the specified 4V, and the voltage behavior Was unstable.
In the battery of Comparative Example 2 having a structure in which the power generation unit is arranged around the ampule, since the inflow of the electrolyte into the power generation unit is insufficient only by the launch impact, the voltage rise characteristic is poor, but the swivel is added. As a result, the electrolyte flowed into the power generation section, and a stable voltage behavior was obtained.

  The liquid injection type battery of the present invention has high reliability and is suitably used as a power source for flying objects.

It is a schematic longitudinal cross-sectional view in the side surface of the injection type battery of Embodiment 1 of this invention. It is a schematic longitudinal cross-sectional view in the front of the injection type battery of Embodiment 1 of this invention. It is an enlarged view of the electric power generation part of FIG. It is a perspective view of the electric power generation part of FIG. It is a schematic longitudinal cross-sectional view which shows an example of the electric power generation part in the injection type battery of this invention. It is a schematic longitudinal cross-sectional view of the other electric power generation part in the injection type battery of this invention. It is a schematic longitudinal cross-sectional view of the other electric power generation part in the injection type battery of this invention. It is a schematic longitudinal cross-sectional view in the side surface of the conventional injection type battery. It is a schematic longitudinal cross-sectional view in the front of the conventional injection type battery. It is a schematic longitudinal cross-sectional view of the electric power generation part in the conventional injection type battery. It is a schematic longitudinal cross-sectional view of the other conventional injection type battery.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ampoule 2 Power generation part 4 Structure 5 Ampoule destruction mechanism 6 Case 7 Protrusion part 8 Injection path 9 Exhaust path 9a, 9b Exhaust hole 10 Temporary cover 11a, 11b Output terminal 12a, 12b Lead wire 13 Resin 21 Negative electrode 22 Substrate 23 Positive electrode 24 Separator 25 Electrode 26 Single cell 27 Recess 28 Bottom 29a Left side 29b Right side 30a Left bent part 30b Right bent part

Claims (6)

An ampule enclosing an electrolyte; a power generation unit including a plurality of stacked single cells; an ampoule storage unit for storing the ampoule, a power generation unit storage unit for storing the power generation unit, and the ampoule storage unit and the power generation unit A structure having a liquid injection path and an exhaust path communicating with the storage section;
The ampoule and the power generation unit are arranged at positions facing each other through the liquid injection path,
The single cell includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode,
The separator includes a left side corresponding to a left edge of the positive electrode and the negative electrode, a right side corresponding to a right edge of the positive electrode and the negative electrode, and a bottom corresponding to a lower edge of the positive electrode and the negative electrode. A liquid injection type battery comprising: a left bent portion extending from the upper end of the left side portion toward the right side portion; and a right bent portion extending from the upper end of the right side portion toward the left side portion.   The injection type battery according to claim 1, wherein the left side, the right side, and the bottom form a recess.   The injection type battery according to claim 1 or 2, wherein an angle between the left bent portion and the left side portion and an angle between the right bent portion and the right side portion are 45 to 135 °, respectively.   The injection type battery according to claim 1 or 2, wherein an angle between the left bent portion and the left side portion and an angle between the right bent portion and the right side portion are 45 to 90 degrees, respectively.   2. The liquid injection type battery according to claim 1, wherein the structure includes an ampoule destruction mechanism that separates the ampoule storage part and the power generation part storage part, and the ampoule destruction mechanism includes the liquid injection path. The liquid injection type battery according to claim 5, wherein the ampoule breaking mechanism has a protrusion on the ampoule housing part side.

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