JP6008744B2 - Rotating flying object - Google Patents

Description

  The present invention relates to a rotating flying object including a thermal battery.

  Conventionally, a thermal battery is suitably used as a power supply source for a rotating projectile such as a cannonball or a missile because it is compact and lightweight and can generate power instantaneously. A thermal battery includes a power generation unit configured by alternately stacking cells and heating elements. The cell includes a positive electrode, an electrolyte, and a negative electrode that are sequentially stacked. As the electrolyte is melted by the heat of combustion of the heating element ignited by the igniter, the thermal battery instantly starts power generation.

  Here, a technique has been proposed in which an electrolyte holder having a plurality of chambers filled with electrolyte is sandwiched between a positive electrode and a negative electrode (see Patent Document 1). According to this method, even when the thermal battery rotates, the molten electrolyte leaks out due to centrifugal force, so that the performance of the thermal battery is less likely to be reduced, and thus short-circuiting in the cell is suppressed. ing.

JP-A-8-106912

  However, it is not easy to form a fine chamber in the electrolyte holder and to fill the fine chamber with a solid electrolyte.

  The present invention has been made in view of the above-described situation, and an object thereof is to provide a rotating flying body including a thermal battery that can easily suppress leakage of an electrolyte.

  The rotating flying object according to the first aspect of the present invention is a rotating flying object capable of flying while rotating about a rotation axis. The rotating flying body includes a main body and a thermal battery fixed inside the main body. The thermal battery includes a cell having a positive electrode, an electrolyte, and a negative electrode sequentially stacked in a first direction, a first heating element disposed on the positive electrode, a second heating element disposed on the negative electrode, and a side surface of the cell. And a plate member arranged along. The first heating element includes a first extension portion extending from the outer peripheral portion toward the second heating element side. The second heating element includes a second extension portion extending from the outer peripheral portion toward the first heating element side and facing the first extension portion. The outer peripheral surface of the plate member is opposed to the first inner peripheral surface of the first extending portion and the second inner peripheral surface of the second extending portion.

  According to the rotary flying body according to the first aspect of the present invention, when the thermal battery rotates, the outer peripheral surface of the plate member is the first inner peripheral surface of the first extending portion and the second inner portion of the second extending portion. Adhere to each of the peripheral surfaces. Therefore, it is possible to easily suppress the molten electrolyte from leaking to the outside.

  The rotary flying body according to the second aspect of the present invention relates to the first aspect, wherein the first direction is parallel to the rotation axis, and the rotation axis passes through the inside of the cell. The plate member surrounds the entire circumference of the side surface of the cell.

  According to the rotary flying body according to the second aspect of the present invention, since the plate member surrounds the entire circumference of the cell, the electrolyte can be prevented from leaking from the entire circumference of the cell.

  The rotary flying body according to the third aspect of the present invention relates to the first aspect, wherein the first direction is parallel to the rotation axis, and the rotation axis passes through the outside of the cell. When viewed from the first direction, the plate member is disposed along a region of the side surface of the cell that is farther from the rotation axis than a contact point with a straight line passing through the rotation axis.

  According to the rotary flying body according to the third aspect of the present invention, since the plate member surrounds the region where the electrolyte leaks out of the side surface of the cell, the leakage of the electrolyte can be efficiently suppressed. Further, since the plate member has an arc shape, the plate member can be easily produced as compared with the case where the plate member is formed in an annular shape.

  The rotary flying body according to the fourth aspect of the present invention relates to the first aspect, and the first direction is perpendicular to the rotation axis. The plate member includes a first member disposed along the first end of the cell in a third direction perpendicular to the first direction and a second direction parallel to the rotation axis, and a first member opposite to the first end. 2nd member arrange | positioned along 2 edge part.

  According to the rotary flying body according to the fourth aspect of the present invention, since the first and second members of the first plate member surround the first and second ends of the cell, electrolyte leakage can be efficiently performed. Can be suppressed. In addition, since the plate member has a two-part structure, the plate member can be easily manufactured as compared with the case where the plate member is formed in an annular shape.

  A rotary flying body according to a fifth aspect of the present invention relates to any one of the first to fourth aspects, and the plate member has a convex portion inserted into a gap between the first extension portion and the second extension portion. Have.

  According to the rotary flying body according to the fifth aspect of the present invention, it is possible to more reliably suppress a short circuit between the first heating element and the second heating element.

  ADVANTAGE OF THE INVENTION According to this invention, a rotary flying object provided with the thermal battery which can suppress the leakage of electrolyte easily can be provided.

The perspective view which shows the external appearance of the shell which concerns on 1st Embodiment. Top view of the thermal battery viewed from the direction of the rotation axis of the shell AA sectional view of FIG. Enlarged view of FIG. Sectional drawing which shows the state which the thermal battery is rotating centering on a rotating shaft The perspective view which shows the external appearance of the shell which concerns on 2nd Embodiment. Plan view of thermal battery viewed from the direction of the rotation axis The perspective view which shows the external appearance of the shell which concerns on 3rd Embodiment Plan view of the thermal battery viewed from the direction of the central axis Perspective view of thermal battery and plate member

  Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and the ratio of each dimension may be different from the actual one. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

  In the following embodiments, a configuration of a shell will be described as an example of a rotating flying object. In the following description, “front” and “rear” are terms based on the traveling direction of the bullet 1 in flight.

[First Embodiment]
(Overall configuration of cannonball 1)
The overall configuration of the cannonball 1 will be described with reference to the drawings. FIG. 1 is a perspective view showing an appearance of a shell 1 in flight. The cannonball 1 flies while rotating in the rotation direction Q around the rotation axis P.

  The cannonball 1 includes a main body 10 and a thermal battery 20.

  The main body 10 forms the outer shape of the shell 1. The main body 10 includes a rear bullet 11 and a front bullet 12. The rear bullet 11 is formed in a columnar shape around the rotation axis P. The rear bullet 11 is connected to the rear end of the front bullet 12. The rear bullet 11 contains a glaze not shown. The front bullet 12 is connected to the front end of the rear bullet 11. The front bullet 12 houses a thermal battery 20 and electrical components (not shown) (for example, a fuze, a control CPU, a GPS receiver, etc.).

  When the thermal battery 20 is ignited, it immediately starts power generation and supplies power to the electrical components. The thermal battery 20 is fixed inside the front bullet 12 of the main body 10. The thermal battery 20 has a cylindrical outer shape. The rotation axis P of the cannonball 1 passes through the inside of the thermal battery 20.

(Configuration of thermal battery 20)
Next, the configuration of the thermal battery 20 will be described with reference to the drawings. FIG. 2 is a plan view of the thermal battery 20 viewed from the direction of the rotation axis P. FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG.

  As shown in FIG. 2, the thermal battery 20 is disposed near the center of the front bullet 12, and the central axis R of the thermal battery 20 substantially coincides with the rotation axis P of the cannonball 1.

  As shown in FIG. 3, the thermal battery 20 includes a housing 21, a heat insulating member 22, a pair of output terminals 23, an igniter 24, a igniting material 25, and a power generation unit 26.

  The housing 21 is a container that houses the heat insulating member 22 and the power generation unit 26. The heat insulating member 22 surrounds the power generation unit 26 and keeps the power generation unit 26 warm. The heat insulating member 22 is made of, for example, an inorganic sintered body or inorganic paper. The pair of output terminals 23 is connected to the power generation unit 26 and extracts current from the power generation unit 26.

  When the current is supplied, the igniter 24 ignites sparks and ignites the conductive material 25. The fire guide material 25 is disposed along the central axis R. The igniting material 25 is ignited by the igniter 24 and ignites and spreads, so that six heating elements 100 described later are ignited substantially simultaneously.

  The power generation unit 26 includes six heating elements 100 (specifically, first to sixth heating elements 101 to 106), five cells 200 (specifically, first to fifth cells 201 to 205), and And five plate members 300 (specifically, first to fifth plate members 301 to 305). Six heating elements 100 and five cells 200 are alternately stacked in the first direction. The power generation unit 26 is connected to the pair of output terminals 23 via the pair of connection members 26a.

  The heating element 100 is ignited and spreads by the igniting material 25 to heat the cell 200. The heating element 100 is composed of, for example, a mixture of metal powder and an oxidizing agent. Although the heating element 100 is formed in a disk shape as a whole, the cross section of the heating element 100 is H-shaped as shown in FIG.

  The cell 200 is formed in a disk shape. The cell 200 includes a positive electrode 200a, an electrolyte 200b, and a negative electrode 200c that are sequentially stacked in the first direction. The electrolyte 200b is melted by being heated by the heating element 100. When the electrolyte 200b melts, a current flows between the positive electrode 200a and the negative electrode 200c. The first direction, which is the stacking direction of the positive electrode 200a, the electrolyte 200b, and the negative electrode 200c, is substantially parallel to the rotation axis P of the cannonball 1.

  Here, as shown in FIG. 2, the rotation axis P of the cannonball 1 is located inside the outer edge of the cell 200. Therefore, the molten electrolyte 200b tends to leak from the entire circumference of the cell 200 by centrifugal force.

  The plate member 300 is sandwiched between the two heating elements 100 in the first direction. The plate member 300 is sandwiched between the two heating elements 100 and the cell 200 in the second direction orthogonal to the first direction. In the present embodiment, the plate member 300 is formed in a ring shape. The plate member 300 is disposed so as to surround the cell 200.

  The plate member 300 is made of an insulating material such as a ceramic material or a ceramic fiber material. Such a plate member 300 is deformed so as to spread around the central axis R by centrifugal force when the bullet 1 flies while rotating. Therefore, the diameter of the plate member 300 centering on the central axis R is increased, and the plate member 300 is pressed against the two heating elements 100.

(Detailed configuration of the power generation unit 26)
Next, the detailed configuration of the power generation unit 26 will be described with reference to the drawings. FIG. 4 is an enlarged view of FIG. However, in FIG. 4, the thermal battery 20 which is not rotating is shown. Moreover, in FIG. 4, the igniting material 25 is omitted.

  The first cell 201 is sandwiched between the first heating element 101 and the second heating element 102. The first cell 201 includes a positive electrode 200a, an electrolyte 200b, and a negative electrode 200c. The first cell 201 is surrounded by the first plate member 301. Therefore, the side surface 201 </ b> S of the first cell 201 faces the inner peripheral surface 301 </ b> T of the first plate member 301. In the present embodiment, the rotation axis P of the cannonball 1 passes through the inside of the first cell 201.

  The first heating element 101 is disposed on the positive electrode 200 a of the first cell 201. The first heating element 101 includes a first outer peripheral portion 101a and a first extending portion 101b. The first outer peripheral portion 101 a is an annular region including the outer edge of the first heating element 101. The first extending portion 101b is formed so as to extend from the first outer peripheral portion 101a toward the second heating element 102 side. The first extending portion 101b is formed in an annular shape. Therefore, the first extending portion 101 b surrounds the first plate member 301, and the first inner peripheral surface 101 T of the first extending portion 101 b faces the outer peripheral surface 301 S of the first plate member 301.

  The second heating element 102 is disposed on the negative electrode 200 c of the first cell 201. The second heating element 102 has a second outer peripheral portion 102a and a second extending portion 102b. The second outer peripheral portion 102 a is an annular region including the outer edge of the second heating element 102. The second extending part 102b is formed so as to extend from the second outer peripheral part 102a toward the first heating element 101 side. The second extending portion 102b is formed in an annular shape. Accordingly, the second extending portion 102 b surrounds the first plate member 301, and the second inner peripheral surface 102 T of the second extending portion 102 b faces the outer peripheral surface 301 S of the first plate member 301.

  Further, the first extending portion 101 b of the first heating element 101 is separated from the second extending portion 102 b of the second heating element 102. Specifically, a gap Vs is provided between the first extension portion 101b and the second extension portion 102b. Thereby, electrical insulation between the first heating element 101 and the second heating element 102 is ensured.

  The first plate member 301 is disposed in a space Es surrounded by the first cell 201, the first heating element 101, and the second heating element 102. Specifically, the first plate member 301 is disposed outside the first cell 201 and inside the first extension portion 101b and the second extension portion 102b. The first plate member 301 surrounds the entire circumference of the side surface 201 </ b> S of the first cell 201. The first plate member 301 is surrounded by the first extending portion 101b and the second extending portion 102b.

  The first plate member 301 has an inner peripheral surface 301T and an outer peripheral surface 301S. The inner peripheral surface 301T of the first plate member 301 faces the side surface 201S of the first cell 201. The outer peripheral surface 301S of the first plate member 301 faces the first inner peripheral surface 101T of the first extending portion 101b and the second inner peripheral surface 102T of the second extending portion 102b.

  Moreover, the 1st board member 301 has the convex part 301a formed cyclically | annularly on the outer peripheral surface 301S. The convex portion 301a is inserted into the gap Vs.

  Here, FIG. 5 is a cross-sectional view showing a state in which the thermal battery 20 rotates around the rotation axis P. As shown in FIG. 5, when the thermal battery 20 rotates, the first plate member 301 deforms so as to spread around the rotation axis P, and comes into contact with the first extension portion 101 b and the second extension portion 102 b. That is, the outer peripheral surface 301S of the first plate member 301 is in close contact with each of the first inner peripheral surface 101T of the first extending portion 101b and the second inner peripheral surface 102T of the second extending portion 102b. Accordingly, the electrolyte 200b heated and melted by the first heating element 101 and the second heating element 102 is confined in the space Es and is prevented from leaking outside the power generation unit 26.

(Feature)
(1) The thermal battery 20 according to the first embodiment includes a first heating element 101, a second heating element 102, a first cell 201, and a first plate member 301. The first heating element 101 includes a first extending part 101b extending from the first outer peripheral part 101a toward the second heating element 102 side. The second heating element 102 includes a second extending part 102b extending from the second outer peripheral part 102a toward the first heating element 101 side. The outer peripheral surface 301S of the first plate member 301 faces the first inner peripheral surface 101T of the first extending portion 101b and the second inner peripheral surface 102T of the second extending portion 102b.

  Therefore, when the thermal battery 20 is rotated, the outer peripheral surface 301S of the first plate member 301 is placed on each of the first inner peripheral surface 101T of the first extending portion 101b and the second inner peripheral surface 102T of the second extending portion 102b. In close contact. Therefore, it is possible to easily suppress the molten electrolyte 200b from leaking out of the power generation unit 26.

  (2) The first cell 201 includes a positive electrode 200a, an electrolyte 200b, and a negative electrode 200c that are sequentially stacked in the first direction. The first direction is substantially parallel to the rotation axis P of the shell 1. The rotation axis P of the cannonball 1 passes through the inside of the first cell 201. The first plate member 301 surrounds the entire circumference of the side surface 201 </ b> S of the first cell 201.

  When the first direction which is the stacking direction of the first cells 201 is parallel to the rotation axis P and the rotation axis P passes through the inside of the first cell 201, the molten electrolyte 200b is centered on the rotation axis P. The centrifugal force is applied, and attempts to leak out from the entire circumference of the first cell 201. In the present embodiment, since the first plate member 301 surrounds the entire circumference of the first cell 201, leakage of the electrolyte 200 can be suppressed.

  (3) The 1st board member 301 has the convex part 301a inserted in the gap | interval Vs of the 1st extension part 101b and the 2nd extension part 102b.

  Therefore, a short circuit between the first heating element 101 and the second heating element 102 can be more reliably suppressed.

[Second Embodiment]
Below, the structure of the cannonball 1a which concerns on 2nd Embodiment is demonstrated. The difference from the shell 1 according to the first embodiment is that in the thermal battery 20, the first plate member 301 surrounds only a part of the side surface 201 </ b> S of the first cell 201. In the following, the difference will be mainly described.

  FIG. 6 is a perspective view showing an external appearance of a shell 1a according to the second embodiment. FIG. 7 is a plan view of the thermal battery 20 as viewed from the direction of the rotation axis P.

  As shown in FIG. 6, the thermal battery 20 has a cylindrical outer shape. The rotation axis P of the cannonball 1 a is substantially parallel to the central axis R of the thermal battery 20. However, the rotation axis P of the cannonball 1 a is located outside the thermal battery 20.

  As shown in FIG. 7, the rotation axis P of the cannonball 1 a passes through the outside of the first cell 201. Therefore, the molten electrolyte 200b tends to leak from a part of the side surface 201S of the first cell 201 by centrifugal force. Specifically, the molten electrolyte 200b tends to leak from the outer region 201Sout that is farther from the rotation axis P than the two contact points CP1 and CP2 with the straight line passing through the rotation axis P of the side surface 201S.

  Therefore, in the present embodiment, the first plate member 301 is disposed along the outer region 201Sout of the side surface 201S of the first cell 201. Therefore, the first plate member 301 is formed in an arc shape.

  Further, each of the first extending portion 101 b of the first heating element 101 and the second extending portion 102 b of the second heating element 102 is formed so as to surround the outside of the first plate member 301. Therefore, each of the first extending portion 101b of the first heating element 101 and the second extending portion 102b of the second heating element 102 is formed in an arc shape.

(Feature)
A first direction that is the stacking direction of the first cells 201 is substantially parallel to the rotation axis P of the cannonball 1a. The rotation axis P of the cannonball 1 a passes outside the first cell 201. The first plate member 301 is disposed along the outer region 201Sout of the side surface 201S of the first cell 201.

  When the first direction, which is the stacking direction of the first cells 201, is parallel to the rotation axis P and passes through the outside of the first cell 201, the molten electrolyte 200b has a centrifugal force around the rotation axis P. And is about to leak from a part of the first cell 201 to the outside. In the present embodiment, since the first plate member 301 surrounds the outer region 201Sout of the side surface 201S of the first cell 201, leakage of the electrolyte 200 can be efficiently suppressed.

  Moreover, since the 1st board member 301 is circular arc shape, the 1st board member 301 can be produced simply compared with the case where it forms in cyclic | annular form.

[Third Embodiment]
Below, the structure of the cannonball 1b which concerns on 3rd Embodiment is demonstrated. The difference from the shell 1 according to the first embodiment is that each plate member 300 is divided into two in the thermal battery 20. In the following, the difference will be mainly described.

  FIG. 8 is a perspective view showing the external appearance of a shell 1b according to the third embodiment. FIG. 9 is a plan view of the thermal battery 20 as seen from the direction of the central axis R. FIG. FIG. 10 is a perspective view of the first cell 201 and the first plate member 301. In FIG. 10, the first to sixth heating elements 101 to 106 and the second to fifth cells 202 to 205 are omitted to show the positional relationship between the first cell 201 and the first plate member 301.

  As shown in FIG. 8, the thermal battery 20 has a prismatic outer shape. The rotation axis P of the cannonball 1 b is substantially perpendicular to the central axis R of the thermal battery 20. As shown in FIG. 9, the thermal battery 20 includes a heating element 100 (including first to sixth heating elements 101 to 106; see FIG. 3) and a cell 200 (first to fifth cells 201 to 205). 3) and a plate member 300 (including first to fifth plate members 301 to 305, see FIG. 3).

  Here, as shown in FIG. 10, the molten electrolyte 200b tends to leak from the first and second end portions 201g and 201h of the first cell 201 by centrifugal force. The first and second end portions 201g and 201h are both end portions of the first cell 201 in a second direction parallel to the rotation axis P and a third direction perpendicular to the first direction.

  Therefore, in the present embodiment, as shown in FIG. 10, the first plate member 301 includes a first member 301g disposed along the first end 201g and a first member disposed along the second end 201h. Two members 301h. Thus, the 1st board member 301 is comprised by two U-shaped members.

  Further, as shown in FIG. 9, the first extending part 101 b of the first heating element 101 and the second extending part 102 b of the second heating element 102 are respectively the first and second members of the first plate member 301. It is formed so as to surround the outside of each of 301g and 301h. Therefore, each of the first extending portion 101b of the first heating element 101 and the second extending portion 102b of the second heating element 102 is also formed in a U-shape.

(Feature)
The first direction, which is the stacking direction of the first cells 201, is perpendicular to the rotation axis P of the cannonball 1a. The first plate member 301 includes first and second members 301g and 301h arranged along the first and second end portions 201g and 201h of the first cell 201.

  When the first direction, which is the stacking direction of the first cells 201, is perpendicular to the rotation axis P, the molten electrolyte 200b tends to leak from the first and second end portions 201g, 201h of the first cell 201 by centrifugal force. To do. In the present embodiment, since the first and second members 301g and 301h of the first plate member 301 surround the first and second end portions 201g and 201h of the first cell 201, leakage of the electrolyte 200b is efficiently performed. Can be suppressed.

  Moreover, since the 1st board member 301 is a 2 division structure, compared with the case where it forms in cyclic | annular form, the 1st board member 301 can be produced simply.

[Other Embodiments]
Although the present invention has been described according to the above-described embodiments, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  (A) In the first to third embodiments, the bullets 1, 1 a, 1 b have been described as an example of the rotating projectile, but the present invention is not limited to this. Examples of the rotating flying object include guided bullets, rocket bullets, and missiles. Of course, the above effect can be obtained even in a missile having a lower number of revolutions per hour than a shell.

  (B) In the said 1st and 2nd embodiment, although the thermal battery 20 was formed in the column shape, it is not restricted to this. Also in the first and second embodiments, as in the third embodiment, the thermal battery 20 may be formed in a prismatic shape.

  On the other hand, in the third embodiment, the thermal battery 20 is formed in a prismatic shape, but may be formed in a cylindrical shape.

  (C) In the said 1st Embodiment, although the 1st board member 301 decided to have the cyclic | annular convex part 301a, it is not restricted to this. The first plate member 301 may have an arc shape or a plurality of protruding convex portions 301a, or may not have the convex portions 301a.

  On the other hand, although not particularly mentioned in the second and third embodiments, the first plate member 301 may have an annular, arcuate, or a plurality of protrusions 301a.

  As described above, the present invention naturally includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 ... Artillery shell 10 ... Main body 20 ... Thermal battery 100 ... Heat generating body 101 ... 1st heat generating body 101b ... 1st extension part 102 ... 2nd heat generating body 102b ... 2nd extension part 200 ... Cell 200a ... Positive electrode 200b ... Electrolyte 200c ... Negative electrode 300 ... Plate member

Claims (5)

A rotating projectile capable of flying while rotating about a rotation axis,
The body,
A thermal battery fixed inside the body;
With
The thermal battery is
A cell having a positive electrode, an electrolyte, and a negative electrode sequentially stacked in a first direction;
A first heating element disposed on the positive electrode;
A second heating element disposed on the negative electrode;
A plate member disposed along a side surface of the cell;
Have
The first heating element includes a first extending part extending from an outer peripheral part toward the second heating element side,
The second heating element includes a second extending portion extending from an outer peripheral portion toward the first heating element side and facing the first extending portion,
The outer peripheral surface of the plate member is opposed to the first inner peripheral surface of the first extending portion and the second inner peripheral surface of the second extending portion.
Rotating flying object. The first direction is parallel to the rotation axis;
The rotating shaft passes through the interior of the cell;
The plate member surrounds the entire circumference of the side surface of the cell;
The rotating projectile according to claim 1. The first direction is parallel to the rotation axis;
The rotation axis passes through the outside of the cell;
When viewed from the first direction, the plate member is disposed along a region of the side surface of the cell that is farther from the rotation axis than a contact point with a straight line passing through the rotation axis.
The rotating projectile according to claim 1. The first direction is perpendicular to the axis of rotation;
The plate member includes a first member disposed along a first end of the cell in a third direction perpendicular to the first direction and a second direction parallel to the rotation axis; and the first end A second member disposed along a second end opposite to the second end,
The rotating projectile according to claim 1. The plate member has a convex portion that is inserted into a gap between the first extending portion and the second extending portion.
The rotary flying object according to any one of claims 1 to 4.

Images