JP2021158042A - Terminal-equipped battery and manufacturing method thereof - Google Patents

Abstract

To provide a terminal-equipped battery that is easy to conduct positioning of external terminals to be attached to a flat-type battery and thus can improve the location accuracy of the external terminals, and a manufacturing method thereof.SOLUTION: A terminal-equipped battery includes an insulation case 3 to accommodate a flat-type battery 2 having an outer can 21, a seal can 22, and an electrode body 23, and an external terminal 4 and an external terminal 5 to be connected to the flat-type battery 2. The flat-type battery 2 is accommodated in the insulation case 3 through an opening 31. The insulation case 3 has an opening 32 causing the outer can 21 to be exposed and an opening 33 causing the seal can 22 to be exposed. The external terminals 4, 5 respectively have flat parts 41, 51 and tip parts 42, 52 extending from the flat parts 41, 51. The flat parts 41, 51 are respectively fitted into the openings 32, 33 so as to be restricted from the movement in the front-and-rear and right-left directions to position the tip parts 42, 52 of the external terminals 4, 5, and are fixed to the outer can 21 and the seal can 22 via the openings 32, 33.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a battery with a terminal and a method for manufacturing the same.

Generally, a flat battery such as a button type battery includes an outer can having a flat surface portion and a peripheral wall portion, and a sealing can having a flat surface portion and a peripheral wall portion and covering the opening of the outer can, and the outer can and the sealing port. The power generation element is housed in the internal space formed between the can and the can. The flat battery is electrically connected to an electronic device, a circuit board, or the like by connecting an external terminal to each of the outer can and the sealing can. The following are disclosed as batteries with such terminals.

Japanese Unexamined Patent Publication No. 2006-179840 discloses a coin-type electrochemical element in which an external lead terminal portion having a substantially triangular shape is welded to each of the outer surfaces of the lower lid and the upper lid of the coin-type battery. In the coin-type electrochemical element, since the welding area to the upper lid and the lower lid is widened by the substantially triangular external lead portion, the external lead terminal can be attached accurately and reliably.

Japanese Unexamined Patent Publication No. 2006-179840

However, in the coin-type electrochemical element, when the lower lid of the coin-type battery is welded to one of the external lead terminals, the coin-type battery is simply arranged on the upper surface of the external lead terminal, so that the coin-type battery is positioned. Is not easy, and misalignment may occur. Further, when welding the upper lid of the coin cell battery to the other external lead terminal portion, the external lead terminal is aligned so that the pilot pin holes formed in each of the one external lead terminal portion and the other external lead terminal portion are aligned. It is necessary to arrange the parts, which is troublesome.

Therefore, it is an object of the present disclosure to provide a battery with a terminal which can easily position an external terminal to be attached to a flat battery and can improve the position accuracy of the external terminal, and a method for manufacturing the same.

In order to solve the above problems, the present disclosure is structured as follows. That is, the terminal-equipped battery according to the present disclosure includes a flat battery having an outer can, a sealing can, and an electrode body, an insulating case for accommodating the flat battery, and a first external terminal connected to the flat battery. You can. The insulating case may have a first opening that exposes a portion of the first battery can of either the outer can or the sealing can. The first external terminal may have a flat portion and a tip portion extending from the flat portion. The flat portion of the first external terminal is fitted to the first opening so as to be restricted from moving in the front-back and left-right directions, positions the tip of the first external terminal, and is passed through the first opening. 1 It may be fixed to a battery can.

Preferably, the boundary line where the outer peripheral end of the flat portion of the first external terminal and the inner peripheral end of the first opening are in contact with each other may have a straight line in a plan view.

Preferably, when the flat portion of the first external terminal is fitted into the first opening, there may be play in the first opening.

Preferably, it may further include a second external terminal connected to the other electrode of the flat battery. The insulating case may have a second opening that exposes a portion of the second battery can of either the outer can or the sealing can. The second external terminal may have a flat portion and a tip portion extending from the flat portion. The flat portion of the second external terminal is fitted to the second opening so as to be restricted from moving in the front-back and left-right directions, positions the tip of the second external terminal, and is passed through the second opening. 2 It may be fixed to the battery can. The tip of the first external terminal and the tip of the second external terminal may be arranged at predetermined distance intervals by positioning.

Preferably, the tip of the second external terminal may be bent toward the first battery can.

The method for manufacturing a battery with a terminal according to the present disclosure may include a step of preparing an insulating case, a flat battery, and a first external terminal. The step of accommodating the flat battery in the insulating case may be included. The step of fitting the flat portion of the first external terminal into the first opening of the insulating case and positioning the tip portion of the first external terminal may be included. The step of fixing the flat portion of the first external terminal to the first battery can of the flat battery via the first opening may be included.

Preferably, the step of fitting the flat portion of the second external terminal into the second opening of the insulating case and positioning the tip portion of the second external terminal may be included. The step of fixing the flat portion of the second external terminal to the second battery can of the flat battery via the second opening may be included.

According to the present disclosure, it is possible to obtain a battery with a terminal which can easily position an external terminal to be attached to a flat battery and can improve the positioning accuracy of the external terminal.

FIG. 1 is an external perspective view showing the structure of the battery with terminals according to the present embodiment. FIG. 2 is a bottom view of the battery with a terminal shown in FIG. FIG. 3 is an exploded perspective view of the battery with a terminal shown in FIG. FIG. 4 is a cross-sectional view taken along the line AA'of the battery with a terminal shown in FIG. FIG. 5 is an exploded perspective view showing a modified battery with terminals.

Hereinafter, the battery 1 with terminals according to the embodiment of the present disclosure will be specifically described with reference to FIGS. 1 to 4. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated. The dimensional ratio between the constituent members shown in each figure does not necessarily indicate the actual dimensional ratio.

As shown in FIGS. 1 to 3, the terminal-equipped battery 1 has an external terminal 4 connected to a flat battery 2, an insulating case 3 accommodating the flat battery 2, and an outer can (battery can) 21 of the flat battery 2. And an external terminal 5 connected to the sealing can (battery can) 22 of the flat battery 2.

As shown in FIGS. 3 and 4, the flat battery 2 includes an outer can 21, a sealing can 22 covering the opening of the outer can 21, and an electrode body 23 arranged between the outer can 21 and the sealing can 22. A gasket 24 for sealing between the outer can 21 and the sealing can 22 is provided.

The outer can 21 is made of a metal material such as stainless steel, and is formed into a bottomed cylinder by press molding. The outer can 21 includes a circular flat surface portion 211 and a cylindrical peripheral wall portion 212 formed continuously from the outer periphery of the flat surface portion 211. The peripheral wall portion 212 is provided so as to extend substantially perpendicular to the flat surface portion 211 in a vertical cross-sectional view.

The sealing can 22 is made of a metal material such as stainless steel, and is formed into a bottomed cylindrical shape by press molding. The sealing can 22 includes a circular flat surface portion 221 and a cylindrical peripheral wall portion 222 formed continuously from the outer periphery of the flat surface portion 221. The peripheral wall portion 222 is provided so as to extend substantially perpendicular to the flat surface portion 221 in a vertical cross-sectional view.

The electrode body 23 includes a positive electrode material 231, a negative electrode material 232, and an electrolyte 233 arranged between the positive electrode material 231 and the negative electrode material 232 as power generation elements. The positive electrode material 231 is a positive electrode pellet obtained by molding a positive electrode active material or the like into a columnar shape. The positive electrode material 231 is arranged adjacent to the inner surface of the flat surface portion 211 of the outer can 21. Therefore, the outer can 21 functions as a positive electrode can. The negative electrode material 232 is a negative electrode pellet obtained by molding a negative electrode active material into a columnar shape. The negative electrode material 232 is arranged adjacent to the inner surface of the flat surface portion 221 of the sealing can 22. Therefore, the sealing can 22 functions as a negative electrode can. The electrolyte 233 may be an electrolytic solution held in the pores of a separator (not shown), or may be a solid electrolyte or a polymer electrolyte. The electrolyte 233 is in a state of being held in the separator, or is disposed between the positive electrode material 231 and the negative electrode material 232 by itself. That is, the flat battery 2 may be a non-aqueous electrolyte battery, an all-solid-state battery, or the like, or may be a primary battery or a secondary battery, and its configuration is not limited.

The outer can 21 and the sealing can 22 are caulked via a gasket 24 between the peripheral wall portion 212 of the outer can 21 and the peripheral wall portion 222 of the sealing can 22 after the electrode body 23 is housed in the internal space. Specifically, the outer can 21 and the sealing can 22 have the openings of the outer can 21 and the sealing can 22 facing each other, and the peripheral wall portion 222 of the sealing can 22 is inserted inside the peripheral wall portion 212 of the outer can 21. Later, it is crimped between the peripheral wall portion 212 and the peripheral wall portion 222 via the gasket 24. As a result, the internal space formed by the outer can 21 and the sealing can 22 is sealed.

The shape of the flat battery 2 is not limited to a substantially cylindrical shape, and may be a substantially polygonal pillar shape, a substantially elliptical pillar shape, or the like.

As shown in FIGS. 1 to 3, the insulating case 3 is formed in a substantially cylindrical shape, and the flat battery 2 is housed therein. The shape of the internal space of the insulating case 3 is substantially the same as or slightly larger than the outer shape of the flat battery 2. The insulating case 3 is made of resin, for example. As shown in FIG. 3, the insulating case 3 has an opening 31 for accommodating the flat battery 2. The insulating case 3 has an opening 32 that exposes at least a part of the outer can 21 and an opening 33 that exposes at least a part of the sealing can 22 in a state where the flat battery 2 is housed. The shape of the internal space of the insulating case 3 is not limited to this as long as the flat battery 2 can be accommodated according to various shapes of the flat battery 2.

The opening 31 is formed on the peripheral side surface of the insulating case 3. The opening 31 has a distance width between both ends of the opening in the circumferential direction. This distance width is substantially the same as the diameter of the flat battery 2, or is slightly smaller than the diameter of the flat battery 2 so as to hold the flat battery 2 accommodated by elastic deformation at both ends of the opening 31. It can also be made smaller. Further, the opening 31 has a height orthogonal to the above-mentioned distance width. The height of the opening 31 is substantially the same as or slightly larger than the height of the flat battery 2. The flat battery 2 is housed in the internal space of the insulating case 3 through the opening 31. The opening 31 may accommodate the flat battery 2 inside the insulating case 3, and the opening position, opening shape, and the like of the opening 31 are not limited to this.

The opening 32 is formed on the upper surface of the insulating case 3. The area of the opening 32 in a plan view is smaller than the area of the flat portion 211 of the outer can 21. That is, the opening 32 exposes a part of the flat surface portion 211 of the outer can 21. The opening 32 is fitted with a flat portion 41 of an external terminal 4, which will be described later. As shown in FIG. 3, the opening 32 has a substantially quadrangular large opening 321 in a plan view and a peripheral end of the upper surface of the resin case 3 from one side of the large opening 321 (one side in the front direction (F) described later). It has a small opening 322 extending to the above, and notches 323 formed at both ends of one side (one side in the rear direction (B) described later) facing the small opening 322. The outer end of the notch 323 is formed so as to be continuous with one side of the large opening 321.

The opening 33 is formed on the lower surface of the insulating case 3. The opening 33 exposes a part of the flat surface portion 221 of the sealing can 22. The shape of the opening 33 and the like are basically the same as those of the opening 32. Therefore, a detailed description of the opening 33 will be omitted. However, as shown in FIG. 3, the small opening of the opening 33 is displaced in the circumferential direction with respect to the small opening 322 of the opening 32.

The external terminal 4 has a flat portion 41 and a tip portion 42. As shown in FIG. 1, in the front-back and left-right directions of the external terminal 4, the front direction is the direction F in which the tip portion 42 is positioned, the opposite side is the rear direction (B), and the left side in the drawing is the right direction. It is R, and the right side in the figure is L in the left direction. The flat portion 41 is fitted into the opening 32 of the insulating case 3 so that the movement in the front-rear and left-right directions is restricted. That is, the flat portion 41 is smaller than the area of the flat portion 211 of the outer can 21, and is formed in a shape that can be fitted to the opening 32 in a plan view. Specifically, the flat portion 41 has a substantially quadrangular shape along the rear direction (B) side of the large opening 321 in a plan view, and the width in the left-right direction gradually narrows toward the tip portion 42 side. At the same time, it is formed so as to project in the forward direction (F) along the small opening 322 of the opening 32. Of the movements of the flat portion 41 in the front-back and left-right directions, the movement in the left-right direction includes a movement of horizontally rotating in the left-right direction about a line orthogonal to the main surface of the flat portion 41.

The flat portion 41 abuts on the rear side (B) of the large opening 321 and the corner portion on the upper surface of the insulating case 3 formed by the boundary between the large opening 321 and the small opening 322 in the front-rear direction. Positioning is done. Further, the flat portion 41 is positioned in the left-right direction by abutting on the left side (L) side and the right direction (R) side of the large opening 321. As a result, the tip portion 42 of the external terminal 4 is positioned. The tip portion 42 is connected to an electronic device, a circuit board, or the like (not shown). As shown in FIG. 1, the tip portion 42 is outside the insulating case 3 from the flat portion 41 in order to attach the battery 1 with a terminal to an electronic device, a circuit board, or the like arranged so as to face the upper surface of the insulating case 3. Extends towards. That is, the tip portion 42 is bent upward in the drawing from the flat portion 41.

The flat portion 41 is welded to the flat portion 211 of the outer can 21 exposed through the opening 32. As a result, the external terminal 4 is fixed to the flat battery 2 in a state where the tip portion 42 is positioned. By fitting the flat portion 41 of the external terminal 4 into the opening 32 in this way, the external terminal 4 can be easily positioned and fixed to the outer can 21, and the position of the tip portion 41 of the external terminal 4 can be easily positioned. The accuracy can be improved. If the flat portion 41 can be fixed to the flat portion 211 and can conduct conductivity from the outer can 21 to the external terminal 4, the fixing method is not limited to welding.

Further, as shown in FIG. 1, the boundary line in which the outer peripheral end of the flat portion 41 of the external terminal 4 and the inner peripheral end of the opening 32 are in contact with each other has a straight line in a plan view at least in a part of the boundary line. There is. As a result, for example, the left and right sides of the flat portion 41 are slid linearly from the front direction (F) along the left side (L) side and the right direction (R) side of the large opening 321. , The flat portion 41 can be easily fitted into the opening 32, and the positioning of the tip portion 42 of the external terminal 4 becomes easier.

Further, as shown in FIG. 1, when the flat portion 41 of the external terminal 4 is fitted into the opening 32, the notch portion 323 of the opening 32 becomes play in the opening 32. Further, a play in the opening 32 is also formed between a portion of the flat portion 41 whose width gradually narrows in the left-right direction and the outer peripheral end of the opening 32. By having play in the opening 32 in this way, the flat portion 41 can be easily fitted into the opening 32, and the external terminal 4 can be easily removed from the flat portion 211 of the outer can 21. Further, as described above, each of the outer end portions of the notch portion 323 is formed so as to be continuous with the left and right sides of the large opening portion 321. As a result, it is not necessary to accurately align the corner portion of the flat portion 41 with the corner portion of the opening 32 and fit the flat portion 41, and the flat portion 41 can be easily fitted to the opening 32.

The external terminal 5 has a flat portion 51 and a tip portion 52. As shown in FIG. 2, in the front-back and left-right directions of the external terminal 5, the front direction is the direction F in which the tip portion 52 is positioned, the opposite side is the rear direction (B), and the upper side in the drawing is the right direction. It is R, and the lower side in the figure is L in the left direction. The flat portion 51 is fitted into the opening 33 of the insulating case 3 so that the movement in the front-rear, left-right direction is restricted. That is, the flat portion 51 is smaller than the area of the flat portion 221 of the sealing can 22, and is formed in a shape that can be fitted to the opening 33 in a plan view. Since the shape of the flat portion 51 is the same as the shape of the flat portion 41, detailed description thereof will be omitted. As a result, the tip portion 52 is positioned. The tip portion 52 extends from the flat portion 51 toward the outside of the insulating case 3 in order to attach the battery 1 with a terminal to an electronic device, a circuit board, or the like arranged so as to face the upper surface of the insulating case 3. That is, as shown in FIG. 1, the tip portion 52 is bent from the flat portion 51 toward the outer can 21 side (upper side in the drawing), and the tip portion extends outward of the insulating case 3. The tip portion 52 is arranged on the outside of the peripheral side surface of the insulating case 3. As a result, the tip portion 52 is insulated from the outer can 2. As described above, the flat portion 41 of the external terminal 4 is smaller than the flat portion 211 of the outer can 21, and the flat portion 51 of the external terminal 5 is also smaller than the flat portion 221 of the sealing can 22. As a result, the battery 1 with terminals can be miniaturized.

The flat portion 51 is welded to the flat portion 221 of the sealing can 22 exposed through the opening 33. As a result, the external terminal 5 is fixed to the flat battery 2 in a state where the tip portion 52 is positioned. By fitting the flat portion 51 of the external terminal 5 into the opening 33 in this way, the external terminal 5 can be easily positioned and fixed to the sealing can 22, and the position of the tip portion 52 of the external terminal 5 can be easily positioned. The accuracy can be improved. If the flat portion 51 is fixed to the flat portion 221 and can conduct conductivity from the sealing can 22 to the external terminal 5, the fixing method is not limited to welding.

The tip portion 42 of the external terminal 4 and the tip portion 52 of the external terminal 5 are arranged at predetermined distance intervals in the circumferential direction of the insulating case 3 by the respective positioning described above. As a result, it is possible to improve the positional accuracy between the pitches of the tip 42 of the external terminal 4 connected to the outer can 21 and the tip 52 of the external terminal 5 connected to the sealing can 22 in the circumferential direction. Further, the tip portion 52 of the external terminal 5 is bent toward the outer can 21 side. Therefore, the tip portion 42 and the tip portion 52 can be conductively connected to an electronic device, a circuit board, or the like on the same side of the outer can 21.
(Modification example)

The plan view shape of the flat portion 41 and the plan view shape of the opening 32 are variously changed if the movement of the flat portion 41 within the opening 32 can be regulated in a state where the flat portion 41 is fitted to the opening 32. be able to. That is, the plan view shape of the flat portion 41 does not always follow the plan view shape of the opening 32. For example, even when the flat portion 41 is formed in a substantially triangular shape and the opening 32 is formed in a substantially circular shape or the like, the apex or any side of the substantially triangular shape abuts on the inner peripheral end of the opening 32. As a result, the movement of the flat portion 41 may be restricted while the tip portion 42 is positioned. The same applies to the plan view shape of the flat portion 51 of the external terminal 5 and the plan view shape of the opening 33.

In the above embodiment, the tip 52 of the external terminal 5 fixed to the sealing can 22 is bent toward the outer can 21, but the tip 42 of the external terminal 4 fixed to the outer can 21 is bent toward the sealing can 22. You may. Further, in the above embodiment, the tip portion 42 and the tip portion 52 are each bent in a direction in which they are connected to an electronic device, a circuit board, or the like, but for example, they face the peripheral side surface of the battery 1 with terminals. When an electronic device, a circuit board, or the like is arranged, it may be extended in a direction along the flat portion 41 and the flat portion 51 without bending. In this way, the tip portion 42 and the tip portion 52 may extend from the flat portion 41 and the flat portion 51 toward the electronic device and the circuit board to be connected, respectively.

Further, as shown in FIG. 4, since the peripheral wall portion 212 of the outer can 21 covers the peripheral wall portion 222 of the sealing can 22, the opening 32 is formed so as to expose a part of the peripheral wall portion 212. You may. Alternatively, when both the peripheral wall portion 212 of the outer can 21 and the peripheral wall portion 222 of the sealing can 22 are exposed depending on the caulking position of the outer can 21 and the sealing can 22, the opening 32 exposes the peripheral wall portion 212 of the outer can 21. The opening 33 may be formed so as to expose the peripheral wall portion 222 of the sealing can 22.

Further, as shown in FIG. 1, the tip portion 42 of the external terminal 4 is positioned at a predetermined distance interval (between pitches) in the circumferential direction by shifting the position in the circumferential direction with respect to the tip portion 52 of the external terminal 5. However, as described above, when the tip portion 42 and the tip portion 52 extend along the flat portions 41 and 51 without bending, it is not always necessary to shift the position in the circumferential direction, and the insulating case 3 It suffices if it can be positioned at a distance in the thickness direction.

Further, as shown in FIG. 5, the opening 32 may include a flange-shaped opening bottom 324 extending inward in the radial direction from the lower end of the opening of the opening 32. A part of the lower surface of the flat portion 41 of the external terminal 4 may be placed on the opening bottom portion 324. The opening 33 can also include a flange-shaped opening bottom extending inward in the radial direction from the upper end of the opening. In this case, the flat portion 41 may be partially curved toward the opening surrounded by the opening bottom portion 324 so that the flat portion 41 can be welded to the flat portion 211 of the outer can 21. That is, the flat portion 41 does not necessarily have to be flat, and may include various uneven shapes. For example, as shown in the drawing, the center of the flat portion 41 may have a convex portion 411 having a rectangular shape in a plan view protruding downward. The convex portion 411 of the flat portion 41 facilitates welding (connection) of the outer can 21 to the flat portion 211. Similarly, the flat portion 51 may have a convex portion protruding upward. The plan view shape of the convex portion 411 is not particularly limited.

Further, the negative electrode material 232 may be arranged on the outer can 21 side, and the positive electrode material 231 may be arranged on the sealing can 22 side. In this case, the outer can 21 functions as a negative electrode can, and the sealing can 22 functions as a positive electrode can.

Although the embodiments have been described above, the present disclosure is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the embodiments.

Next, a method of manufacturing the battery 1 with terminals will be specifically described with reference to FIG.

First, the flat battery 2 is inserted through the opening 31 and housed in the insulating case 3. In this state, the opening 32 exposes the outer can 21 of the flat battery 2. Further, the opening 33 exposes the sealing can 22.

Next, the flat portion 41 of the external terminal 4 is fitted into the opening 32 for positioning, and the external terminal 4 is fixed (welded) to the outer can 21.

Next, the flat portion 51 of the external terminal 5 is fitted into the opening 33 for positioning, and the external terminal 5 is fixed (welded) to the sealing can 22. It should be noted that which of the external terminal 4 and the external terminal 5 should be fixed to the flat battery 2 first may be appropriately determined. In this state, the tip portion 41 of the external terminal 4 and the tip portion 51 of the external terminal 5 are positioned with high positional accuracy.

As described above, according to the manufacturing method of the battery 1 with terminals, the external terminals 4 and the external terminals 5 can be easily positioned, and the batteries with terminals having good positional accuracy of the external terminals 4 and the external terminals 5 can be efficiently obtained. can. When only one of the external terminal 4 and the external terminal 5 is attached to the flat battery 1, the step of either one can be omitted.

1 Battery with terminal 2 Flat battery, 21 Exterior can, 22 Sealed can, 23 Electrode body 3 Insulation case, 31 Opening, 32 Opening, 33 Opening 4 External terminal, 41 Flat part, 42 Tip 5 External terminal, 51 Flat part, 52 Tip part

Claims (7)

A flat battery with an outer can, a sealing can, and an electrode body,
An insulating case for accommodating the flat battery and
It is provided with a first external terminal connected to the flat battery.
The insulating case has a first opening that exposes a part of the first battery can of either the outer can or the sealing can.
The first external terminal has a flat portion and a tip portion extending from the flat portion.
The flat portion of the first external terminal is fitted into the first opening so that movement in the front-back and left-right directions is restricted, and the tip of the first external terminal is positioned to position the first opening. A battery with a terminal fixed to the first battery can via the above. The battery with a terminal according to claim 1.
A battery with terminals whose boundary line where the outer peripheral end of the flat portion of the first external terminal and the inner peripheral end of the first opening are in contact with each other has a straight line in a plan view. The battery with a terminal according to claim 1 or 2.
A terminal-equipped battery having play in the first opening when the flat portion of the first external terminal is fitted into the first opening. The battery with a terminal according to any one of claims 1 to 3, further
A second external terminal connected to the flat battery is provided.
The insulating case has a second opening that exposes a part of the second electrode can of either the outer can or the sealing can.
The second external terminal has a flat portion and a tip portion extending from the flat portion.
The flat portion of the second external terminal is fitted to the second opening so as to restrict movement in the front-back and left-right directions, positions the tip of the second external terminal, and the second opening. It is fixed to the second electrode can via the portion, and is fixed to the second electrode can.
A terminal-equipped battery in which the tip of the first external terminal and the tip of the second external terminal are arranged at predetermined distance intervals by the positioning. The battery with a terminal according to claim 4.
The tip of the second external terminal is a battery with a terminal that is bent toward the first battery can. The method for manufacturing a battery with a terminal according to any one of claims 1 to 5.
The step of preparing the insulating case, the flat battery, and the first external terminal, and
The step of accommodating the flat battery in the insulating case and
A step of fitting the flat portion of the first external terminal into the first opening of the insulating case and positioning the tip of the first external terminal.
A method for manufacturing a battery with terminals, which comprises a step of fixing a flat portion of the first external terminal to a first battery can of the flat battery via the first opening. The method for manufacturing a battery with a terminal according to claim 6, further
A step of fitting the flat portion of the second external terminal into the second opening of the insulating case and positioning the tip of the second external terminal.
A method for manufacturing a battery with terminals, which comprises a step of fixing a flat portion of the second external terminal to a second battery can of the flat battery via the second opening.

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