JP2008310987A - Battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide batteries in which pressure can be added appropriately so as to increase contact inside the batteries and reduce internal resistance, in a battery, a unit cell, or a laminated battery, and a manufacturing method of them. <P>SOLUTION: The unit cell includes: a planar electrode in which a positive electrode 14 and a negative electrode 16 are laminated in a form of pinching a solid or gelatinous electrolyte 12; and a frame 18 of an electric insulator for retaining the peripheral edge of the electrode. The thickness of the frame is larger than that of the laminating direction of the electrode body. Thus, the electrode is hard to be collapsed even if a sufficient pressure is added to a face of the electrode in a form of pinching the positive electrode and the negative electrode. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a battery, and relates to a unit battery or a laminated battery.

Conventionally, for example, Japanese Patent Application Laid-Open No. 2003-168416 discloses a unit cell having a structure in which the periphery of a unit cell is sealed with an insulating substrate. The unit battery includes a positive electrode and a negative electrode with a solid electrolyte membrane interposed therebetween. An insulating substrate is provided so as to surround the unit cell and sandwich the positive electrode and the negative electrode. During battery operation, an electrochemical reaction takes place near the positive and negative electrodes. Current is collected by a take-out port provided in the insulating substrate. In the above conventional publication, unit cells are simply stacked by stacking insulating substrates.
JP 2003-168416 A

  By the way, it is known that when pressure is applied to the battery, the contact inside the battery increases and the internal resistance decreases. However, in the above conventional technique, the unit battery is enclosed and sealed by the insulating substrate, and it is difficult to apply pressure to the battery. For this reason, there is little contact inside the battery, and the internal resistance of the battery may be increased.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a battery capable of appropriately applying pressure.

  In order to achieve the above object, a first invention is a unit battery comprising a planar electrode body in which a positive electrode and a negative electrode are stacked with a solid or gel electrolyte interposed therebetween, and a frame of an electrical insulator. And the thickness of the said frame is larger than the thickness of the lamination direction of the said electrode body, It is characterized by the above-mentioned.

  A second invention is a unit battery according to the first invention, characterized in that it comprises a current collector that is in contact with a positive electrode or a negative electrode provided in the electrode body and fits in the frame.

3rd invention is a unit battery of 1st invention or 2nd invention, Comprising: The sealing material which seals the said battery around the said unit battery is provided, It is characterized by the above-mentioned.

  A fourth invention is a battery in which a plurality of unit batteries according to the second or third invention are stacked with a current collector sandwiched between two unit batteries adjacent to each other. Meanwhile, the positive electrode provided in one unit battery and the negative electrode provided in the other unit battery are in contact with each other, and are fitted in the frame provided in one unit battery and the frame provided in the other unit battery. And a current collector.

  5th invention is a battery, Comprising: The planar electrode body which laminated | stacked the positive electrode and the negative electrode in the form which pinched | interposed the solid or gel-like electrolyte was equipped, and the said electrode body was laminated | stacked by the form which pinched | interposed the collector It has an electrode laminated body, and the frame of the electrical insulator holding the periphery of the said electrode laminated body, It is characterized by the above-mentioned.

  6th invention is a battery of the 4th or 5th invention, Comprising: The sealing material which seals the said battery is provided around the said battery, It is characterized by the above-mentioned.

  7th invention is a battery of 6th invention, Comprising: The said sealing material pressurizes the said battery in the direction which pinches | interposes the positive electrode and negative electrode with which the said battery was equipped, It is characterized by the above-mentioned.

  An eighth invention is a method of manufacturing a unit battery, comprising: a step of installing an electric insulator frame in a cylinder of a molding die; and a step of filling one of positive electrode and negative electrode materials in the cylinder. Filling the solid or gel electrolyte material, and pressurizing the electrode material and the electrolyte material filled using a piston having a convex portion fitted into the frame, and creating an electrode body. It is characterized by providing.

  A ninth invention is a method for manufacturing a battery, the step of fitting a current collector in a frame of a unit battery manufactured in claim 8, and fitting the current collector in a frame of another unit battery. And a step of stacking unit cells together.

  According to the first invention, the electrode body is held in the frame of the electrical insulator. Therefore, the electrode body is not easily collapsed. Furthermore, even when a sufficient pressure is applied to the surface of the electrode body with the positive electrode and the negative electrode being sandwiched, the electrode body is not easily broken. Therefore, a sufficient pressure can be applied to the electrode body.

  According to the second invention, the current collector is fitted in the frame. Therefore, according to the structure of this invention, a collector is hard to shift | deviate from a frame.

  According to the third invention, the unit cell is sealed. Therefore, the unit battery does not collapse even when the unit battery is moved.

  According to the fourth invention, the current collector is fitted in each frame of the adjacent unit cells. Therefore, according to the structure of this invention, a unit cell can be simply laminated | stacked so that the frame of the other unit battery may be fitted to the electrical power collector fitted to the frame of one unit battery. Furthermore, according to the configuration of the present invention, adjacent unit cells are not easily displaced.

  According to the fifth invention, the battery having the laminated structure is provided in the frame of the electrical insulator. Therefore, the battery is not easily collapsed, and a sufficient pressure can be applied to the surface of the electrode body. Therefore, the internal resistance of the battery can be reduced. Furthermore, according to the structure of this invention, a battery can be made thin by using a thin electrical power collector.

  According to the sixth invention, the battery is sealed. Therefore, the battery does not collapse even when the battery is moved.

  According to the seventh invention, the battery is sealed in a pressurized state. Therefore, the internal resistance of the battery is reduced. Therefore, the battery can be used in a state where the internal resistance of the battery is reduced.

  According to the eighth invention, it is possible to manufacture a unit cell having an electrode body held by an insulator frame.

  According to the ninth aspect of the invention, it is possible to manufacture a battery in which a current collector is fitted in each frame of adjacent unit batteries.

Embodiment 1 FIG.
[Configuration of Embodiment 1]
FIG. 1 is a diagram showing a cross section of the unit battery of the first embodiment. The unit battery 10 includes a solid electrolyte 12. The solid electrolyte 12 is obtained by compacting a Li ₂ S—P ₂ S ₅ glass ceramic powder. A positive electrode 14 and a negative electrode 16 are provided so as to sandwich the solid electrolyte 12. The positive electrode 14 is LiCoO ₂ . The negative electrode is In foil. The solid electrolyte 12, the positive electrode 14, and the negative electrode 16 have a circular shape with a diameter of 10 mm. The thickness of the solid electrolyte 12, the positive electrode 14, and the negative electrode 16 (hereinafter, “thickness” indicates the length in the direction in which the positive electrode 14 and the negative electrode 16 are sandwiched) is 0.7 mm. A circular frame 18 is provided on the periphery of the solid electrolyte 12, the positive electrode 14, and the negative electrode 16. The frame 18 is an insulator. Specifically, it is polytetrafluoroethylene resin. The inner diameter of the frame 18 is Φ10 cm, and the outer diameter of the frame 18 is Φ16.2 mm. The thickness of the frame 18 is 1.1 mm.

  Flat circular current collectors 20 and 22 are provided so as to sandwich the positive electrode 14 and the negative electrode 16. The current collector 20 is in contact with the positive electrode 14, and the current collector 22 is in contact with the negative electrode 16. The thicknesses of the current collectors 20 and 22 are uniform with respect to the stacking direction of the unit batteries 10 and are each 0.3 mm. The thickness from the current collector 20 to the current collector 22 (thickness in which the current collector 20, the positive electrode 14, the solid electrolyte 12, the negative electrode 16, and the current collector 22 are stacked) is 1.3 mm, which is larger than the thickness of the frame 18. . Part of the current collectors 20 and 22 is fitted in the frame 18. The current collectors 20 and 22 and the frame 18 are sealed by caulking. Part of the current collectors 20 and 22 protrudes outside the frame 18 in the stacking direction of the electrode bodies.

[Operation of the first embodiment]
During the operation of the unit battery 10, a chemical reaction is performed in the vicinity of the positive electrode 14 and the negative electrode 16, and electrons are generated as lithium ions move. Electrons generated by the chemical reaction move to the current collectors 20 and 22. When pressure is applied to the current collectors 20 and 22 with the current collectors 20 and 22 sandwiched therebetween, pressure is applied to the unit cell 10 with the positive electrode 14 and the negative electrode 16 sandwiched therebetween.

  If the pressure on the unit cell 10 is large with the positive electrode and the negative electrode 16 being sandwiched, the contact between the positive electrode 14 and the solid electrolyte 12 and the contact between the negative electrode 16 and the solid electrolyte 12 are strong, and lithium ions at these contact interfaces The movement resistance is small. Therefore, lithium ions easily move between the positive electrode 14 and the solid electrolyte 12 and between the negative electrode 16 and the solid electrolyte 12. Moreover, when the pressure to the unit battery 10 is large with the positive electrode 14 and the negative electrode 16 being sandwiched, the contact between the particles in the solid electrolyte 12, the positive electrode 14, and the negative electrode 16 is strong. Therefore, lithium ions easily move in the solid electrolyte 12, the positive electrode 14, and the negative electrode 16.

  When the pressure on the unit cell 10 is large with the positive electrode 14 and the negative electrode 16 being sandwiched, the contact between the particles in the positive electrode 14 and the negative electrode 16 is strong. When the contact between the particles in the positive electrode 14 and the negative electrode 16 is strong, electrons easily move in the positive electrode 14 and the negative electrode 16. In addition, when pressure is applied to the current collectors 20 and 22 with the current collectors 20 and 22 being sandwiched, the contact between the positive electrode 12 or the negative electrode 16 and the current collectors 20 and 22 becomes strong. When the contact between the positive electrode 12 or the negative electrode 16 and the current collectors 20 and 22 is strong, electrons near the positive electrode 12 or the negative electrode 16 easily move to the current collectors 20 and 22.

[Effect of Embodiment 1]
As described above, the solid electrolyte 12, the positive electrode 14, and the negative electrode 16 are held by the frame 18. Therefore, the solid electrolyte 12, the positive electrode 14, and the negative electrode 16 are not easily collapsed and are not easily separated from each other. Therefore, when carrying the unit battery 10, the unit battery 10 is not easily collapsed. Therefore, the unit battery 10 can be easily carried.

  As described above, the solid electrolyte 12 is held by the frame 18 and hardly collapses. Therefore, a part of the solid electrolyte 12 is not easily lost. When the solid electrolyte 12 is missing, the positive electrode 14 and the negative electrode 16 may come into contact with each other to cause a short circuit. However, according to the present invention, the short circuit can be suppressed.

  As described above, when pressure is applied to the current collectors 20 and 22 with the current collectors 20 and 22 sandwiched therebetween, the lithium ions easily move the unit battery 10 and move the solid electrolyte 12 easily. Further, the electrons move through the positive electrode 14 and the negative electrode 16 and easily move to the current collectors 20 and 22. Therefore, the internal resistance of the battery 12 can be reduced by applying pressure to the battery 12 with the current collectors 20 and 22 sandwiched therebetween.

  When pressure is applied across the current collectors 20 and 22 across the current collectors 20 and 22, lithium ions and electrons easily move across the unit battery 10. Therefore, the internal resistance of the unit battery 10 can be made very small.

  In the present embodiment, the current collectors 20 and 22 are fitted in the frame 18, but the present invention is not limited to this. For example, the current collectors 20 and 22 may be arranged with a predetermined gap from the inner edge of the frame 18 so as to be within the frame 18.

In the present embodiment, the solid electrolyte 12 is Li ₂ S—P ₂ S ₅ glass ceramics, but is not limited to this, and any solid electrolyte or gel electrolyte used in a normal battery may be used. . For example, a silver ion conductive solid electrolyte, a copper ion conductive solid electrolyte, or a proton conductive solid electrolyte may be used. A lithium ion conductive solid electrolyte may be used.

In the present embodiment, the current collectors 20 and 22 and the frame 18 are sealed by caulking, but the present invention is not limited to this. For example, the current collectors 20 and 22 and the frame 18 may be sealed by welding or an O (O) ring structure.

  In the present embodiment, the frame 18 is circular, but is not limited thereto. It may be a polygon.

  The laminate of the positive electrode 14, the solid electrolyte 12, and the negative electrode 16 realizes the electrode body according to the first invention.

[Production Method of Embodiment 1]
A method for manufacturing the unit battery according to the first embodiment will be described. The manufacturing method described below is an example, and the present invention is not limited to this. FIG. 2 is a view for explaining a molding die for manufacturing the unit battery of the first embodiment. A piston 62 can be inserted from one end of the cylinder 60 and a piston 64 can be inserted from the other end of the cylinder 60 into the cylinder 60 of the molding die. The tips of the pistons 62 and 64 (the side inserted into the cylinder 60) have a convex portion. The convex portions of the pistons 62 and 64 are fitted in the frame 18. The height of the convex portions of the pistons 62 and 64 is lower than the thickness of the frame 18.

FIG. 3 is a flowchart for explaining the method of manufacturing the unit battery according to the first embodiment. First, the frame 18 is loaded into the cylinder 60 (step 100). A piston 62 is inserted into the cylinder 60 from one end of the cylinder 60. The frame 18 is loaded so that the frame 18 fits into the convex part of the piston 62. As described above, the frame 18 is loaded into the cylinder 60.

Subsequently, a unit cell is formed in the frame 18 (step 102). Filling the LiCoO ₂ powder as the material of the positive electrode 14 in the frame 18. The piston 64 is inserted into the cylinder 60 and pressurized, and the positive electrode 14 is compacted in the frame 18. Next, after the piston 64 is once removed from the cylinder 60, Li ₂ S—P ₂ S ₅ glass ceramic powder is filled as a material of the solid electrolyte 12 on the positive electrode 14 in the frame 18 in argon gas. Then, the piston 64 is inserted into the cylinder 60. Pressure is applied by the pistons 62 and 64 so as to sandwich the positive electrode 14 and the solid electrolyte 12 material (from the top and bottom of the cylinder 60), and the solid electrolyte 12 is compacted in the frame 18. Here, by performing compacting of the solid electrolyte 12 in argon gas, the sulfur component contained in the solid electrolyte 12 does not cause a chemical reaction. Then, after the piston 64 is once removed from the cylinder 60, In foil is placed on the solid electrolyte 12 as the material of the negative electrode 16. Then, the piston 64 is inserted into the cylinder 60. Pressure is applied by pistons 62 and 64 with the positive electrode 14, the solid electrolyte 12 and the negative electrode 16 sandwiched therebetween (from the upper and lower sides of the cylinder 60), and the In foil is pressure-bonded in the frame 18 to form the negative electrode 16. Thus, the unit battery is formed in the frame 18.

Subsequently, the unit battery is taken out from the cylinder (step 104). The unit battery integrated with the frame 18 is taken out from the cylinder 60.
Then, a current collector is attached to the unit battery (step 106). A current collector is attached so as to fit into the frame 18 with the positive electrode 14 and the negative electrode 16 sandwiched therebetween. The unit battery 10 is manufactured as described above.

  According to the unit battery manufacturing method described above, the unit battery 10 integrated with the frame 18 is taken out from the cylinder 60. Therefore, it is easy to take out the unit battery 10. Therefore, when the unit battery 10 is taken out, it is easy to suppress the collapse of the unit battery 10.

In this embodiment, in step 102, the solid electrolyte 12 is compacted in argon gas, but the present invention is not limited to this. What is necessary is just in the inert gas which is hard to make the solid electrolyte 13 react chemically. For example, a dry gas may be used. Further, when a solid electrolyte having low chemical reactivity is used, it may be in the atmosphere.

[Configuration of Embodiment 2]
FIG. 4 is a diagram showing the laminated battery of the second embodiment. The stacked battery 24 includes the unit battery 10. As described above, in the unit battery 10, a part of the current collector 20 is fitted in the frame 18 of the unit battery 10, and a part of the current collector 20 protrudes from the frame 18. Here, the current collector 20 has a circular shape and is fitted into the frame 18. The portion of the current collector 20 that protrudes from the frame 18 is in contact with the negative electrode of the unit battery 21. Further, the portion of the current collector 20 that protrudes from the frame 18 is fitted into the frame of the unit battery 21.

  A current collector 30 is provided in contact with the positive electrode of the unit battery 21. The current collector 30 is fitted into the frame of the unit battery 21. A part of the current collector 30 protrudes from the frame of the unit battery 21. The current collector 30 is fitted in the frame of the unit battery 28 and is in contact with the negative electrode of the unit battery 28. The unit battery 28 includes a current collector 32 so as to be in contact with the positive electrode of the unit battery 28 and fit into the frame of the unit battery 28.

[Operation of Embodiment 2]
When pressure is applied to the laminated battery 24 so as to sandwich the current collectors 22 and 32 (in the direction of the arrow in FIG. 4), the unit cells 18, 21 and 28 are pressurized, and the unit cells 18, 24 and 28 The pressure increases. When the pressure in the unit cells 18, 21, and 28 is high, the battery and lithium ions easily move in the unit cells 18, 21, and 28.

  When pressure is applied to the stacked battery 24 so as to sandwich the current collectors 22 and 32, the pressure between each unit battery and the current collector increases. When the pressure of the unit battery and the current collector is high, electrons easily move from the unit battery to the current collector. In addition, when pressure is applied to the stacked battery 24 so that the current collectors 22 and 32 are sandwiched, the current collectors 20 and 30 are fitted in the frame of the adjacent unit cells. Pressure is applied directly to the electrode body.

[Effect of Embodiment 2]
When the unit batteries 10 and 21 are stacked, the current collector 20 is fitted into the frame of the unit battery 21. That is, the unit cells are stacked by using the frame of the unit cells as a position reference. Therefore, positioning between unit batteries can be performed easily.

As described above, the current collector 20 is fitted in the frame 18 of the unit battery 10 and the frame of the unit battery 21. The current collector 30 is fitted in the frame of the unit battery 21 and the frame of the unit battery 28. Therefore, even when the laminated battery 24 is moved, the unit batteries 18, 21, and 28 are not displaced.

FIG. 5 is a diagram showing the relationship between the pressure of the laminated battery 24 and the internal resistance. In FIG. 5, the horizontal axis represents the pressure in the direction in which the current collectors 22 and 32 of the laminated battery 24 are sandwiched. In FIG. 5, the vertical axis represents the internal resistance of the laminated battery 24, and is a ratio with the internal resistance being 1 when a pressure of 60 kgf / cm ² is applied. From FIG. 5, when the pressure applied to the laminated battery is large so as to sandwich the current collectors 22 and 32, the internal resistance is small. Therefore, when pressure is applied to the laminated battery 24 so as to sandwich the current collectors 22 and 32, the internal resistance of the unit batteries 10, 21, and 28 is reduced. Therefore, the internal resistance of the laminated battery 24 can be reduced by applying pressure to the laminated battery 24.

[Modification of Embodiment 2]
FIG. 6 is a diagram showing a modification of the second embodiment. A laminated battery 34 shown in FIG. 6 includes a frame 36. The inside of the frame 36 is circular. A circular electrode body 38 is provided in the frame 36. The electrode body 38 is formed by laminating a positive electrode, a solid electrolyte, and a negative electrode. The electrode body 38 is laminated with the electrode body 42 via a circular current collector 40. The electrode body 42 is provided in the frame 36. The electrode body 42 includes a circular current collector 44 on the side opposite to the current collector 40. A part of the current collector 44 is fitted in the frame 36, and a part of the current collector 44 protrudes outside the frame 36. The electrode body 38 includes a circular electrode body 48 via a current collector 46. The electrode body 48 is provided in the frame 36. The electrode body 48 includes a circular current collector 50 on the side opposite to the current collector 46. A part of the current collector 50 is fitted in the frame 36, and a part of the current collector 50 protrudes outside the frame 36.

  According to the configuration of the present embodiment, the current collectors 40 and 46 fitted in the frame 34 do not need to be positioned when the unit cells are stacked, and may simply collect current. Therefore, it is possible to use the current collectors 40 and 46 having a thickness smaller than the thickness of the current collector used when stacking ordinary unit cells. Therefore, the thickness of the stacked battery 34 in the stacking direction can be reduced by using the thin current collectors 40 and 46.

  A laminate of the electrode body 42, the current collector 40, the electrode body 38, the current collector 46 and the electrode body 48 realizes the electrode laminate according to the fifth aspect.

[Manufacturing Method of Modified Example of Embodiment 2]
FIG. 7 is a flowchart for explaining a manufacturing method according to a modification of the second embodiment. In the flowchart shown in FIG. 7, the same parts as those in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted. In the flowchart shown in FIG. 6, following the loading of the frame 36 in step 100, the laminated battery is integrally formed in the frame 36 (step 108). In the frame 36, the positive electrode, the solid electrolyte, and the negative electrode are compacted to form an electrode body 48. A current collector 46 is placed on the electrode body 48. Subsequently, the electrode body 38 is formed on the current collector 46. The current collector 40 is installed on the electrode body 38, and the electrode body 42 is formed on the current collector 40.

  According to the manufacturing method of the modified example of the above-described second embodiment, the laminated battery 34 can be integrally formed in the frame. Therefore, the laminated battery 34 can be easily produced.

[Battery sealing method]
FIG. 8 is a diagram for explaining a sealed laminated battery. The stacked battery 24 includes an ultraviolet curable resin 56 so as to surround the periphery of the stacked battery 24 in the stacking direction. The ultraviolet curable resin 56 pressurizes the stacked battery 24 in the stacking direction of the stacked battery 24 and seals the stacked battery 24.

A method for sealing the laminated battery 24 will be described. First, a compression jig is provided in the laminated battery 24 (step 200). Compression jigs 52 and 54 are provided on the current collectors 22 and 32 of the laminated battery 24 so as to sandwich the current collectors 22 and 32.
Subsequently, pressure is applied to the laminated battery 24 (step 202). Pressure is applied to the laminated battery 24 in the direction in which the compression jigs 52 and 54 sandwich the current collectors 22 and 32 (in the direction of the arrows in the figure).
Subsequently, the laminated battery is sealed (step 204). The periphery of the laminated battery 24 is sealed in a state where pressure is applied to the laminated battery 24 with the compression jigs 52 and 54. Here, the periphery of the laminated battery 24 is surrounded by the ultraviolet curable resin 56, and the ultraviolet curable resin 56 is cured.
Subsequently, the compression jig is removed (step 206). After the ultraviolet curable resin 56 is cured, the compression jigs 52 and 54 are removed. At this time, the stacked battery 24 is collected through the holes of the compression jigs 52 and 54 generated in the ultraviolet curable resin 56 when the compression jigs 52 and 54 are removed.

  According to the battery sealing method described above, the laminated battery 24 is sealed in a state where the laminated battery 24 is pressurized. Therefore, the laminated battery 24 can be operated in a state where the laminated battery 24 is pressurized. Therefore, the laminated battery 24 can be operated with the internal resistance of the laminated battery 24 being low.

In this sealing method, the laminated battery 24 is sealed with the ultraviolet curable resin 56, but the present invention is not limited to this. The laminated battery 24 may be sealed using an insulating material that does not easily transmit moisture. Alternatively, the laminated battery 24 may be sealed by resin injection molding or the like.

  In this sealing method, the laminated battery 24 is sealed, but the present invention is not limited to this, and the unit battery 10 shown in FIG. 1 may be sealed.

[Variation of battery sealing method]
FIG. 9 is a view showing a modified example of the sealed laminated battery. As shown in FIG. 9, the laminated battery 24 is caulked and sealed with a metal case 58 to form a button battery. Or you may seal by a metal laminate film.

FIG. 1 is a diagram showing a cross section of the unit battery of the first embodiment. FIG. 2 is a view for explaining a molding die for manufacturing the unit battery of the first embodiment. FIG. 3 is a flowchart for explaining the manufacturing method of the first embodiment. FIG. 4 is a diagram showing the laminated battery of the second embodiment. FIG. 5 is a diagram showing the relationship between the pressure of the laminated battery 24 and the internal resistance. FIG. 6 is a diagram showing a modification of the second embodiment. FIG. 7 is a flowchart for explaining a manufacturing method according to a modification of the second embodiment. FIG. 8 is a diagram for explaining a sealed laminated battery. FIG. 9 is a view showing a modified example of the sealed laminated battery.

Explanation of symbols

10 unit cell 12 solid electrolyte 14 positive electrode 16 negative electrode 18, 36 frame 20, 22, 30, 32, 40, 44, 46, 50 current collector 24 laminated battery 38, 42, 48 electrode body 52, 54 compression jig 56 ultraviolet Cured resin

Claims (9)

A unit cell comprising a planar electrode body in which a positive electrode and a negative electrode are stacked in a form sandwiching a solid or gel electrolyte, and an electric insulator frame that holds the periphery of the electrode body,
The unit battery is characterized in that the thickness of the frame is larger than the thickness of the electrode body in the stacking direction.   The unit battery according to claim 1, further comprising a current collector that is in contact with a positive electrode or a negative electrode provided in the electrode body and is fitted in the frame. The unit battery according to claim 1, further comprising a sealing material that seals the battery around the unit battery. In stacking a plurality of unit cells according to claim 2 or 3 in a form sandwiching a current collector,
A frame provided in one unit cell in contact with a positive electrode provided in one unit cell and a negative electrode provided in the other unit cell between two adjacent unit cells among the plurality of stacked unit cells. A current collector that fits within a frame provided in the inner and other unit cells;
A battery comprising: A planar electrode body in which a positive electrode and a negative electrode are stacked with a solid or gel electrolyte sandwiched therebetween, and an electrode laminate in which a plurality of the electrode bodies are stacked with a current collector sandwiched therebetween,
A frame of an electrical insulator that holds the periphery of the electrode stack;
A battery comprising:   The battery according to claim 4, further comprising a sealing material that seals the battery around the battery.   The battery according to claim 6, wherein the sealing material pressurizes the battery in a direction sandwiching a positive electrode and a negative electrode provided in the battery. Installing an electrical insulator frame in the cylinder of the molding die;
Filling one of the positive electrode and negative electrode electrode materials into the cylinder;
Filling a solid or gel electrolyte material;
Pressurizing the electrode material and the electrolyte material filled with a piston having a convex portion fitted into the frame to create an electrode body; and
A method for producing a unit battery, comprising: Fitting the current collector within the frame of the unit battery manufactured in claim 8;
Fitting the current collector in a frame of another unit cell and stacking unit cells; and
A method for producing a battery, comprising:

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