JP2002093402A - Sealed battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealed battery capable of providing high output and improving volume efficiency. SOLUTION: This seal battery 10 comprises a winding type power generating element 11, a negative electrode collecting plate 14 and a positive current collecting plate 15 connected to a negative electrode 12 and a positive electrode 13 of the power generating element 11, respectively, and a negative electrode terminal 16 and a positive electrode terminal 17 connected to the negative current collecting plate 14 and the positive current collecting plate 15. The negative electrode terminal 16 and the positive electrode terminal 17 extend in the crossing direction the axial line of the power generating element 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed battery,
In particular, the present invention relates to a sealed battery employing a wound power generation element.

[0002]

2. Description of the Related Art A sealed battery 80 shown in FIG. 8 has a wound power generating element 81 which is flattened into a substantially elliptical column shape, and a negative electrode portion 82 and a positive electrode portion provided at both axial ends of the power generating element 81, respectively. Department
83, a negative electrode current collector 84 and a positive electrode current collector 85 connected to the negative electrode part 82 and the positive electrode part 83, respectively, and a power generation element 81 connected to the negative electrode current collector 84 and the positive electrode current collector 85, respectively. A negative terminal 86 and a positive terminal 87 extending substantially parallel to the axis of the power generating element 41 from the negative electrode part 82 side;
And a substantially box-shaped sealed battery package 88 for housing the power generation element 81 such that the open end of the positive electrode terminal 87 and the open end of the positive electrode terminal 87 are exposed to the outside. A predetermined negative electrode terminal and a predetermined positive electrode terminal are previously fixed to the lid (not shown) of the sealed battery package 88, and the negative electrode leads provided on the negative current collector 84 and the positive current collector 85, respectively. The wire and the positive lead may be connected to the negative and positive terminals.

The power generating element 81 is formed by laminating a strip-shaped negative electrode, separator, and positive electrode in advance so as to be arranged in phase with each other in the width direction, and then winding only the widthwise edge of the negative electrode. The negative electrode part exposed in a shape is formed at one end in the axial direction, and the negative electrode part exposed only in the widthwise edge of the positive electrode in a spiral shape is formed at the other end in the axial direction.
Thereafter, the power generation element 41 is flattened by being compressed and deformed in the radial direction. The power generating element 81 may be formed by winding a negative electrode, a separator, and a positive electrode, which are stacked on each other, on a flat wound core material in advance, and then pulling out the wound core material.

Here, the negative electrode is a strip-shaped copper foil, and a carbon-based organic polymer is applied as an active material on both surfaces thereof so that copper is exposed at a predetermined width from both ends in the width direction. On the other hand, the positive electrode is a strip-shaped aluminum foil, and an oxide such as cobalt, nickel, or manganese is applied as an active material on both surfaces thereof so that aluminum is exposed at a predetermined width from both ends in the width direction.

The negative electrode current collector plate 84 is a flat U-shaped copper flat plate corresponding to substantially half of the planar shape of the negative electrode portion 82, and has a negative electrode terminal 86 erected along the thickness direction. On the other hand, the positive electrode current collector 85 is a substantially rectangular aluminum flat plate, and is connected to a lead fitting 90 via a lead plate 89 extending along the outer peripheral bus of the power generation element 81. The lead metal fitting 90 is connected to the negative electrode part 82
A flat U-shaped flat plate corresponding to substantially half of the planar shape of the above is arranged substantially in parallel so as not to contact the negative electrode current collector 84, and the positive electrode terminal 87 is erected along the thickness direction. I have. The negative electrode current collector plate 84 and the positive electrode current collector plate 85 are in contact with the negative electrode and the positive electrode substantially at right angles, and are respectively connected to the widthwise edge of the negative electrode and the widthwise edge of the positive electrode by laser welding.

[0006]

In general, in order to obtain a high output, it is desirable for a sealed battery to have a contact area of a current collecting plate with a power generation element as large as possible. However, the sealed battery 80 described above employs the negative electrode current collector plate 84 corresponding to substantially half of the planar shape of the negative electrode portion 82 so as not to interfere with the lead metal fitting 90, so that it is difficult to increase the output. There is a problem.

Further, in the sealed battery 80, since the positive electrode terminal 87 is connected to the positive electrode current collector 85 through the lead plate 89 and the lead fitting 90, the maximum current that the lead plate 89 and the lead fitting 90 can carry. There is a problem that it is difficult to increase the output due to the influence of the amount. Furthermore, such a sealed battery 80 has a problem that the weight ratio to the output is increased due to the lead plate 89 and the lead fitting 90 that do not contribute to the electrochemical reaction, resulting in poor volumetric efficiency.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to obtain a high output and
An object of the present invention is to provide a sealed battery capable of improving volumetric efficiency.

[0009]

In order to achieve the above-mentioned object, the present invention provides a wound power generating element in which a negative electrode and a positive electrode are stacked via a separator, as described in claim 1, A sealed battery including a pair of current collectors connected to both axial end surfaces of the power generating element and a pair of terminals connected to the current collectors, respectively, wherein the terminals are connected to the power generating element. It is characterized by extending along a direction intersecting the axis.

Here, the terminal may be connected along the surface direction of the current collecting plate, or the terminal or the current collecting plate may be bent in a substantially crank shape to form a terminal on the peripheral surface of the power generating element. It may extend at any position in the direction of height relative to the axis. Further, as the terminal, at least one of the pair of terminals may be in the above-described form, and when both of the pair of terminals are in the above-described form, each terminal does not need to have the same form.

In the sealed battery constructed as described above, the terminals extend along the direction intersecting the axis of the power generating element, so that the current collectors can have any shape and any size without interfering with each other. , Thereby obtaining a higher output than in the past. Also, in this sealed battery, since the terminals extend along the direction intersecting the axis of the power generating element, there is no need for a conventional lead plate or lead metal fitting, which also makes it possible to compare with the conventional case. As a result, a high output can be obtained and the volumetric efficiency can be improved.

Further, in the present invention, as described in claim 2, the current collecting plate has a supporting plate along a bus of the power generating element, and the terminal is supported by the supporting plate. For example, if each current collecting plate supports a terminal via a supporting plate, the relative position of each terminal can be set arbitrarily.

Further, in the present invention, since the terminals are parallel to each other and extend in the same direction, the same terminal in the sealed battery package accommodating the power generating element. Each terminal can be provided from the surface.

By the way, in the above-mentioned sealed battery, since the terminals extend in the direction intersecting the axis of the power generating element, when the terminals extend parallel to each other and extend in the same direction, When accommodating the power generating element in the sealed battery package, the power generating element is suspended via each terminal, and the weight of the power generating element acts on the connection portion between the both end faces of the power generation element and each current collector plate, and the connection portion May be damaged.

On the other hand, according to the present invention, as described in claim 4, a winding member is provided along a circumferential direction with respect to an outer peripheral surface of the power generating element, and the winding member connects the power generating element. It can be suspended. Here, the winding member is not particularly limited, but an insulating material that does not need to be insulated from the power generating element is more structurally advantageous. However, a conductive material of the same material as the terminal only needs to be able to ensure insulation against the power generating element, and in particular, a material used as a current collector having a polarity located at the outermost periphery of the power generating element, such as a copper plate for the negative electrode. Does not need to be insulated, and can be firmly connected to the support plate by laser welding or the like. Such a winding member may be wound one or more times around the entire periphery of the power generating element, or partially attached to the peripheral surface of the power generating element if the power generating element can be suspended. May be.

In the sealed battery constructed as described above, the winding member is provided along the outer peripheral surface of the power generating element. If the power generation element is suspended via the power supply element, the weight of the power generation element does not act on the connection portion between the both end faces of the power generation element and each current collector plate, thereby avoiding the possibility that the connection portion may be damaged.

Further, in the present invention, the winding member includes a supporting plate connected to the current collecting plate and extending along a bus of the power generating element and supporting the terminal. Are wound with the support plate as a starting point and an end point, so that when the terminals are parallel to each other and extend in the same direction, even if the power generating element is suspended through the terminals, The weight of the power generating element does not act on the connection between the end faces and each current collector plate.

Further, according to the present invention, the winding member is substantially band-shaped, and the open end of the terminal is exposed to the outside and covers the support plate. It is characterized by being wound. In such a sealed battery, since the winding member is substantially band-shaped, the contact area with the power generating element can be increased, whereby the outer circumference of the power generating element is reduced by its own weight as compared with the case where the winding member is wire-shaped. The possibility that the surface is damaged can be reduced.

Next, the present invention provides a sealed battery package for accommodating the power generating element, and a support member for supporting the sealed battery package. A member includes a bottom portion that supports the sealed battery package, and a plurality of arms connected to the bottom portion and extending along a tangential direction of the power generation element, wherein each of the arms radially moves the power generation element. It is characterized in that it is arranged so as to be sandwiched between.

Here, the supporting member may be formed in a rectangular tube shape with a bottom, or a bottom portion corresponding to the side shape of the power generating element, and a plurality of arms rising from the edge of the bottom portion in the thickness direction. May have a substantially frame shape. In the sealed battery configured as described above, since the sealed battery package is supported by the support member, when a large power generation element provided for the stationary sealed battery is adopted, each arm is moved when moving. , The self-weight of the power generating element does not act on the power generating element itself, so that damage or deformation of each part does not occur. Further, in the present invention, as described in claim 8, since the support member is a rectangular tube having a bottom, the side surface of the sealed battery package can be protected.

By the way, generally, when a wound type power generating element is housed in a rectangular parallelepiped sealed battery package, the sealed battery is located between the inner corner of the sealed battery package and the outer peripheral surface of the power generating element. There are a plurality of surplus spaces. These surplus spaces tend to expand with an increase in the size of the power generating element, and are a main cause of deterioration in volumetric efficiency.

On the other hand, according to the present invention, as described in claim 9, the power generating element has a plurality of power generating elements, and the axis of each of the power generating elements is arranged along the same plane. The plate is connected to the axial end faces of the power generating elements collectively. here,
As the terminal, when each power generating element is laminated along the flat direction, the power generating element may be provided along the flat direction of each power generating element, or in a direction intersecting with the flat direction of each power generating element. May be provided along.

In the sealed battery configured as described above, since a plurality of power generating elements are connected to the same current collector plate, when a single power generating element is housed in a rectangular parallelepiped sealed battery package. Compared to the volume of the surplus space that occurs, the total volume of the surplus space that occurs when a plurality of power generating elements are housed in a sealed battery package of the same shape and the same size can be reduced. Can be improved.

[0024]

Embodiments of the present invention will be described below in detail with reference to the drawings. In addition, in each embodiment described below, the members and the like already described in FIG. 8 are denoted by the corresponding reference numerals in the drawing to simplify or omit the description.

As shown in FIG. 1, a sealed battery 10 according to a first embodiment of the present invention includes a wound power generation element 11 which is flattened into a substantially elliptical column shape, a negative electrode portion 12 of the power generation element 11 and Positive electrode section
Negative current collector 14 and positive current collector connected to 13 respectively
15, a negative electrode terminal 16 and a positive electrode terminal 17 connected to the negative electrode current collector plate 14 and the positive electrode current collector plate 15, respectively, a pair of winding members 18 along a circumferential direction with respect to an outer peripheral surface of the power generation element 11, A substantially flat rectangular parallelepiped box-shaped package 19 for housing the power generating element 11 so that the open end of the terminal 16 and the open end of the positive electrode terminal 17 are exposed outside, and a package 19 for the sealed battery.
And a support member 20 for supporting the A predetermined negative electrode terminal and a predetermined positive electrode terminal are previously fixed to the lid (not shown) of the sealed battery package 19, and the negative electrode leads provided on the negative electrode current collector 84 and the positive electrode current collector 85, respectively. The wire and the positive electrode lead may be connected to the negative electrode terminal and the positive electrode terminal by welding or the like.

The negative electrode current collector 14 and the positive electrode current collector 15 have a substantially band shape extending along the long axis direction at the end face of the power generation element 11, and support plates 21 and 22 are provided at their respective longitudinal ends.
It is connected in the shape of a letter. The support plates 21 and 22 are the negative current collector plate 14.
In addition, it has the same width dimension as the positive electrode current collector plate 15, and is provided so that the end faces face each other in a non-contact manner along the generatrix of the power generation element 11. These negative electrode current collector 14 and positive electrode current collector 15
Are connected to both end faces of the power generating element by laser welding.

The negative electrode terminal 16 and the positive electrode terminal 17 are
It is supported so as to extend along the thickness direction from predetermined positions 1 and 22. Therefore, the negative electrode terminal 16 and the positive electrode terminal 17 extend in parallel with each other along the same direction that intersects the axis of the power generation element 11.

Each of the winding members 18, 18 is, for example, a cloth band having a predetermined width, and has an adhesive surface on one side. These winding members 18, 18 are provided on the outer peripheral surface of the power generating element 11 so that the open end of the negative electrode terminal 16 and the open end of the positive electrode terminal 17 are exposed to the outside and cover the support plates 21, 22. On the other hand, it is wound one or more times along the circumferential direction.

The support member 20 includes a sealed battery package 19.
23 having a substantially rectangular plate shape, and four side portions 24A to 24A which are arms rising from the periphery of the bottom portion 23 in the thickness direction.
D and has a bottomed square cylindrical shape. Each side 24A-24
The upper end of D has an engaging portion 25 to which a predetermined hook or the like can be engaged.
A to 25D are provided. The support member 20 is provided on each side.
24A to 24D extend along the tangential direction of the power generating element 11, and the side portions 24A and 24C are arranged so as to sandwich the power generating element 11 in the radial direction.

Next, the procedure for assembling the above sealed battery 10 will be described. First, a negative current collector 14 and a positive current collector 15 are connected to the negative electrode portion 12 and the positive electrode portion 13 of the power generating element 11 by laser welding so that the end faces of the support plates 21 and 22 face each other. 16 open end and positive terminal 17
The winding members 18, 18 are wound around the outer peripheral surface of the power generating element 11 one or more times in the circumferential direction so that the open ends of the power generating elements 11 are exposed to the outside and cover the support plates 21, 22. 16
The power generation element 11 is suspended via the positive electrode terminal 17 and housed in the sealed battery package 19. At this time, the power generating element 11 has its own weight of the winding members 18, 18 and the support plates 21, 22.
To act on the negative terminal 16 and the positive terminal 17 via
There is no risk of damage to the connection between the negative electrode part 12 and the positive electrode part 13 of the power generating element 11 and the negative electrode current collector 14 and the positive electrode current collector 15.

Next, the opening of the sealed battery package 19 is closed by a cover member (not shown), so that the power generating element 11 is closed.
The sealed battery 10 is housed in the support member 20 such that the negative terminal 16 and the positive terminal 17 face upward. If such a sealed battery 10 is hung via the engaging portions 25A to 25D when moving, the own weight of the power generating element 11 does not act on the power generating element 11 itself, thereby causing damage or deformation of each part. Absent.

According to the above sealed battery 10, the negative electrode terminal
Since the positive electrode terminal 16 and the positive electrode terminal 17 extend along the direction intersecting the axis of the power generating element 11, the negative electrode current collector plate 14 and the positive electrode current collector plate 15 can be set to any shape and any size without interfering with each other. , Thereby obtaining a higher output as compared with the conventional case. Further, according to the sealed battery 10, since the negative electrode terminal 16 and the positive electrode terminal 17 extend along the direction intersecting the axis of the power generation element 11, conventional lead plates and lead fittings are required. In addition, this also enables a higher output to be obtained as compared with the related art, and also improves the volumetric efficiency.

According to such a sealed battery 10,
Support plate 2 connected to negative current collector 14 and positive current collector 15
Since the negative terminal 16 and the positive terminal 17 are supported by the first and the second 22, the relative positions of the negative terminal 16 and the positive terminal 17 can be arbitrarily set. Further, according to the sealed battery 10, since the negative electrode terminal 16 and the positive electrode terminal 17 are parallel to each other and extend in the same direction, from the same surface in the sealed battery package 19 that accommodates the power generation element 11. The negative terminal 16 and the positive terminal 17 can be pulled out.

Then, according to the sealed battery 10 described above,
Since the power generating element 11 can be hung by the winding members 18, the power generating element 11 can be hung via the winding members 18 to accommodate the power generating element 11 in the sealed battery package 19. The connection between the negative electrode part 12 and the positive electrode part 13 of the power generating element 11 and the negative current collector 14 and the positive current collector 15
The weight of the connection part does not act, thereby avoiding the possibility that the connection portion may be damaged. Such a structure is particularly effective when the weight of the sealed battery 10 is 5 kg or more.

In particular, according to the sealed battery 10, since the winding members 18, 18 are wound with the support plates 21, 22 as starting and end points, the power generating element is connected via the negative terminal 16 and the positive terminal 17. Even if 11 is hung, the weight of the power generating element does not act on the connection between the negative electrode part 12 and the positive electrode part 13 of the power generating element 11 and the negative electrode terminal 16 and the positive electrode terminal 17. According to such a sealed battery 10, since the winding members 18, 18 are substantially strip-shaped, the contact area with the power generating element 11 can be widened, so that the winding members 18, 18 are wire-shaped. The possibility that the outer peripheral surface of the power generation element 11 is damaged by its own weight can be reduced as compared with the case of

Further, according to the sealed battery 10 as described above, since the sealed battery package 19 is supported by the support member 20, a large power generation element used for a stationary sealed battery is provided.
In the case of adopting 11, the power generation element 11 does not act on the power generation element 11 itself if it is suspended via the support member 20 when moving, and thus no damage or deformation of each part occurs. In particular, according to this support member 20, since it is a bottomed square tubular shape,
The side surface of the sealed battery package 19 can be protected.

FIG. 2A shows a sealed battery 30 according to a second embodiment of the present invention. In addition, in each embodiment described below, the members and the like already described in the first embodiment are denoted by the corresponding reference numerals in the drawings, and description thereof will be simplified or omitted. This sealed battery 30
Has three power generating elements 11, and the axis and flat direction of each power generating element 11 are arranged along the same plane. The negative electrode current collector 34 and the positive electrode current collector 35 are collectively connected to the negative electrode part 12 and the positive electrode part 13 of each power generating element 11, and each of the power generating elements 11 has a longitudinal end. Are connected to support plates 21A and 22A.

According to the above-described sealed battery 30, the plurality of power generation elements 11 have the same negative electrode current collector 35 and positive electrode current collector 35.
, The volumetric efficiency can be improved as compared with the related art. In other words, as shown in FIGS. 2B and 2C, the excess spaces S1 to S4 generated in the conventional sealed battery 80 in which a single power generation element 81 is housed in a rectangular parallelepiped sealed battery package 88. Compared to the total volume, the sealed battery 30 is
Since the plurality of power generation elements 11 are housed in the sealed battery package 81 used for the sealed battery 80, the total volume of the surplus spaces S5 to S12 can be reduced.

Next, as shown in FIG. 3, the sealed battery 40 according to the third embodiment of the present invention basically includes the axes of the three power generating elements 11 and the flat The directions are arranged along the same plane. In the sealed battery 40, the negative electrode current collector 44 and the positive electrode current collector 45 are collectively connected to the negative electrode part 12 and the positive electrode part 13 of each power generating element 11, and each of the power generating elements Support plates 21B and 22B are connected to the short-axis end of 11. According to such a sealed battery 40, since the plurality of power generation elements 11 are connected to the same negative electrode current collector 44 and the same positive electrode current collector 45, the volume efficiency can be improved as compared with the related art. The same effects as in the second embodiment can be obtained.

Next, FIG. 4 shows a sealed battery 50 according to a fourth embodiment of the present invention, and FIG.
An embodiment of a sealed battery 60 is shown. These sealed batteries 50 and 60 are basically configured in the same manner as in the first embodiment described above, and the forms of the winding members 58 and 68 are different from those in the first embodiment.

That is, the sealed battery 50 includes the winding members 58,
Numeral 58 designates the power generating element 11 with the support members 21 and 22 as starting and end points.
Is wound on the outer peripheral surface of. On the other hand, the sealed battery 60 employs a winding member 68 wider than the above-mentioned winding member 58, and the power generation element 11 covers the end faces of the support plates 21 and 22.
Is wound on the outer peripheral surface of. In the fourth embodiment and the fifth embodiment, the same effects as those of the first embodiment can be obtained.

The support member of the sixth embodiment shown in FIG.
20A is an arm 26A in the thickness direction from the center of each edge of the bottom 23.
26D extend, and engagement portions 25A to 25D are provided at the tips of the arms 26A to 26D. According to such a support member 20, the sealed battery package (not shown) can be held in the radial direction by the arms 26A and 26C, and the engaging portions 25A to 25D are attached to the tips of the arms 26A to 26D. Is provided, so that the sealed battery can be supported in the same manner as in the case where the battery is formed in a bottomed rectangular tube shape.

Note that the present invention is not limited to the above-described embodiments, and appropriate modifications and improvements can be made. For example, in each of the above-described embodiments, the form in which the negative electrode terminal and the positive electrode terminal are supported by the support plate is illustrated. However, the present invention also includes the sealed batteries 70A and 70B shown in FIG.

That is, the sealed battery 70 shown in FIG.
In A, a negative electrode terminal 76 and a positive electrode terminal 77 are connected along the surface direction of the negative electrode current collector plate 14 and the surface direction of the positive electrode current collector plate 15, respectively. The negative electrode terminal 76 and the positive electrode terminal 77 are connected to the negative electrode current collector plate 14 and the positive electrode current collector plate via connecting portions 76A and 77A radially flattened from the axial center to one end (the lower end in FIG. 7). 15 and each open end is
Extend in parallel to each other along the same direction that intersects the axis of.

The sealed battery 70B shown in FIG.
The negative electrode terminal 76 and the positive electrode terminal 77 used in the above-described sealed battery 70A are adopted, and the negative electrode terminal 76 and the positive electrode terminal 77 are oriented in a direction away from each other.
Desired effects can be obtained even in such sealed batteries 70A and 70B.

In addition, the materials of the power generating element, the current collector, the terminal, the support plate, the winding member, the package for the sealed battery, the support member, the bottom portion, the arm portion and the like exemplified in each of the above embodiments,
The shape, size, form, number, location, etc. are arbitrary and not limited as long as the present invention can be achieved.

[0047]

As described above, according to the present invention, as described in claim 1, since the terminals extend along the direction intersecting the axis of the power generating element, The plates can be set to any shape and any size without interfering with each other, and a conventional lead plate and lead metal fittings are not required, so that a higher output can be obtained and volumetric efficiency can be improved as compared with the related art. .

Further, according to the present invention, as described in claim 2, the terminals are supported by the support plate along the bus of the power generating element, so that the relative positions of the terminals can be set arbitrarily.
Further, according to the present invention, as described in claim 3,
Since the terminals are parallel to each other and extend in the same direction, the terminals can be pulled out from the same surface of the sealed battery package accommodating the power generating element.

According to the present invention, since the winding member is provided along the outer peripheral surface of the power generating element, the power generating element can be accommodated in the sealed battery package. If the power generating element is suspended via the winding member, the weight of the power generating element does not act on the connection between the both end faces of the power generation element and the respective current collector plates, which may cause damage to the connection. This is particularly effective when the weight is 5 kg or more.

According to the present invention, since the winding member is wound with the support plate as a starting point and an end point, the terminals are parallel to each other and face in the same direction. In this case, even if the power generation element is suspended via each terminal, the weight of the power generation element does not act on the connection between the both end faces of the power generation element and each current collector plate. Furthermore, according to the present invention, as described in claim 6, since the winding member is substantially band-shaped, the contact area with the power generating element can be increased,
Thereby, compared to the case where the winding member is in a wire shape,
The possibility that the outer peripheral surface of the power generating element is damaged by its own weight can be reduced.

Next, according to the present invention, as described in claim 7, the sealed battery package is supported by the support member, so that a large-sized power generating element used for a stationary sealed battery can be used. If adopted, if it is suspended via each arm when moving, the own weight of the power generating element does not act on the power generating element itself,
As a result, no damage or deformation of each part occurs. Further, according to the present invention, as described in claim 8, since the support member is a rectangular tube having a bottom, the side surface of the sealed battery package can be protected.

Further, according to the present invention, since a plurality of power generation elements are connected to the same current collector plate, a single power generation element is provided in a rectangular parallelepiped sealed battery package. Compared to the volume of the extra space that occurs when a plurality of power generating elements are accommodated in a sealed battery package of the same shape and dimensions, which can be reduced by the conventional method. Volume efficiency can be improved in comparison.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a first embodiment according to the present invention.

FIG. 2 is an overall perspective view showing a second embodiment according to the present invention and a schematic diagram comparing with a conventional example.

FIG. 3 is an overall perspective view showing a third embodiment according to the present invention.

FIG. 4 is an overall perspective view showing a fourth embodiment according to the present invention.

FIG. 5 is an overall perspective view showing a fifth embodiment according to the present invention.

FIG. 6 is an overall perspective view showing a support member according to a fifth embodiment of the present invention.

FIG. 7 is an overall perspective view showing a modification of the present invention.

FIG. 8 is an overall perspective view showing a conventional example.

[Explanation of Signs] 10, 30, 40, 50, 70A, 70B Sealed battery 11 Power generating element 14, 34, 44 Negative current collector (current collector) 15, 35, 45 Positive current collector (current collector) 16,76 Negative terminal (terminal) 17,77 Positive terminal (terminal) 21,21A, 22,22A Support plate 18,58,68 Wound member 19,88 Sealed battery package 20,20A Support member 23 Bottom 24A, 24B, 24C, 24D side (arm) 26A, 26B, 26C, 26D arm

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Yufu, 2-3-1, Furube-cho, Takatsuki-shi, Osaka F-term in Yuasa Corporation (reference) 5H022 AA09 AA18 CC02 CC08 CC12 CC16 5H028 AA01 AA05 CC05 CC08 CC12 5H029 AJ03 AK02 AL06 BJ02 CJ07 DJ05 DJ07

Claims (9)

[Claims] 1. A winding type power generating element in which a negative electrode and a positive electrode are stacked via a separator, a pair of current collectors connected to both axial end surfaces of the power generating element, and a pair of current collectors. A sealed battery comprising: a pair of terminals connected to each other; wherein the terminals extend along a direction intersecting an axis of the power generating element. 2. The sealed battery according to claim 1, wherein the current collecting plate has a supporting plate along a bus of the power generating element, and the terminal is supported by the supporting plate. 3. The sealed battery according to claim 1, wherein the terminals are parallel to each other and extend in the same direction. 4. The power generation element according to claim 1, further comprising a winding member that extends in a circumferential direction with respect to an outer peripheral surface of the power generation element, wherein the winding member is capable of suspending the power generation element. Sealed battery. 5. A support plate connected to the current collector plate and supporting the terminal along the bus of the power generating element, wherein the winding member is wound around the support plate as a starting point and an end point. The sealed battery according to claim 4, wherein: 6. The winding member is substantially band-shaped,
6. The sealed battery according to claim 5, wherein an open end of the terminal is exposed to the outside and wound so as to cover the support plate. 7. A sealed battery package for accommodating the power generating element, and a support member for supporting the sealed battery package, wherein the support member supports a bottom portion for supporting the sealed battery package. A plurality of arms connected to the bottom portion and extending along a tangential direction of the power generating element, wherein each of the arms is arranged so as to sandwich the power generating element in a radial direction. The sealed battery according to claim 1. 8. The sealed battery according to claim 7, wherein the support member has a bottomed rectangular cylindrical shape. 9. A power generation element having a plurality of power generation elements, wherein the axis of each of the power generation elements is arranged along the same plane, and the current collector plate is collectively arranged with respect to an axial end face of each of the power generation elements. The sealed battery according to claim 1, wherein the battery is connected.