JP2002343324A - Battery holding structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery holding structure which facilitates work at time of holding batteries. SOLUTION: With the battery holding structure where end plates 26, 28 are arranged at both ends of laminating directions of a plurality of laminated batteries, which are combined by a pair of underside holding rods 34 and a pair of topside holding rods 36, a triangle rotation-halting plate part 40 is fixed to one end part of the underside holding rods 34 and a patch 32 is fixed at the end plate 28. This way, when a bolt 30 is buried for combining the underside holding rods 34 and the end plate 28, the rotation-halting plate part 40 is made contacted with the underside face of the patch 32, whereby, the underside holding rods 34 are prevented from turning together with the bolt 30, hence an improvement in workability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery restraining structure for stacking a plurality of batteries and integrally restraining them.

[0002]

2. Description of the Related Art A rectangular secondary battery, that is, an assembled battery in which a plurality of batteries are stacked is known. The battery pack is used as a drive source of a vehicle that drives a vehicle by a motor such as an electric vehicle and a hybrid vehicle.

As a restraining structure for integrally restraining a plurality of batteries in the battery pack, there is a restraining structure described in Japanese Patent Application Laid-Open No. 2001-68081, for example. In the battery pack described in this publication, end plates are arranged at both ends of a battery (in this publication, a unit battery) in the stacking direction, and the battery is integrally restrained by tightening between the end plates with a restraining band. .
The restraining band is formed of a band-shaped plate, and one end is bent in an L shape so as to be parallel to the end plate facing the battery, and is formed on the end plate facing the battery. It is fixed by bolts. The other end of the restraining band extends so as to be parallel to the peripheral side surface of the end plate, and is fixed to the peripheral side surface of the other end plate by bolts or rivets.

A battery restraining structure as described in Japanese Patent Application Laid-Open No. 9-120808 has also been proposed. In Japanese Patent Application Laid-Open No. 9-120808, as a conventional technique, a pair of reinforcing bodies (end plates) are arranged at both ends in the stacking direction of a battery, and a rod-shaped bolt is erected between the pair of end plates. A battery restraining structure that connects end plates by tightening both ends with nuts is described.

[0005]

However, Japanese Patent Laid-Open Publication No.
The battery restraining structure described in Japanese Patent Publication No. 1-68081 has the following problems. That is, the force by which the restraining band pulls the end plates in the direction to approach each other is
Since the portion of the end plate that is not in contact with the battery is supported only by the strength of the end plate, the end plate is configured to withstand relatively large strength. In addition, since one end of the restraining band is fixed to the peripheral side surface of the end plate by a bolt or a rivet, a thickness and strength that can securely fix the bolt or the rivet to the end plate are required.
Therefore, there is a problem that the end plate becomes relatively heavy. In particular, when the battery pack is mounted on a vehicle, it is not preferable that the end plate becomes heavy. On the other hand, the battery restraining structure described as a prior art in Japanese Patent Application Laid-Open No. 9-120808 has a problem that the rod-shaped bolt rotates together with the nut when the nut is tightened, resulting in poor workability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a battery restraining structure that facilitates work when restraining a battery.

[0007]

According to a first aspect of the present invention, there is provided a battery system comprising: a pair of restraining plates disposed at both ends in a stacking direction of a plurality of stacked batteries; A restraining plate connecting member for connecting, and a tightening member that is tightened in an axial direction of the restraining plate connecting member from an end of the restraining plate connecting member; A restraining plate for pressing the plurality of batteries in a direction approaching each other to integrally restrain the plurality of batteries, wherein the restraining plate connecting member is provided around the axis of the restraining plate connecting member. A rotation preventing portion for preventing rotation of the motor.

[0008] According to this structure, when the tightening member is tightened, the rotation preventing portion prevents the rotation of the restricting plate connecting member, so that the restricting plate connecting member is prevented from rotating together with the tightening member. . Therefore, the workability when integrally restraining the plurality of batteries is improved. Further, since the tightening direction of the tightening member and the pressing direction of the restraint plate against the battery match, a force acts in the tightening direction of the strong tightening member and in the thickness direction of the restraint plate.
Therefore, the weight of the restraint plate can be reduced.

[0009] Preferably, the rotation preventing portion is
A part or all of the restraint plate connecting member, the cross-sectional shape of the restraint plate connecting member perpendicular to the axial direction is configured such that the distance from the axis to the outer peripheral edge is not uniform in the circumferential direction. The rotation preventing portion is a part that is brought into contact with a predetermined fixing member whose position is fixed in the rotation direction of the restraint plate connecting member. With this configuration, when the rotation preventing portion is brought into contact with the fixing member when the tightening member is tightened, the restraining plate connecting member does not further rotate, and is prevented from rotating together with the tightening member. .

[0010] Preferably, the rotation preventing portion is provided on at least one end of the restraining plate connecting member at a cross section perpendicular to the axial direction of the restraining plate connecting member from an axis of the restraining plate connecting member. An anti-rotation plate fixed so that the distance to the peripheral edge is non-uniform in the circumferential direction, wherein the restraining plate has a contact portion that abuts the anti-rotation plate in the rotation direction of the restraining plate connecting member. Is formed. With this configuration, when the tightening member is tightened, if the rotation prevention plate and the contact portion of the restraint plate are brought into contact with each other, the restraint plate connecting member does not rotate any more but rotates with the tightening member. Is prevented.

By the way, when the tightening member is tightened with a strong force, the restraint plate connecting member and the restraint plate are tightened by tightening the tightening member only by preventing the restraining plate connecting member from rotating together with the tightening member. Is fixed, there is a risk that the restraint plate will rotate due to the tightening force. Therefore, preferably, the fixing member has a fixing surface whose position is fixed and which is brought into contact with the rotation preventing portion in the rotation direction of the rotation preventing portion, to hold the restraining plate so that it cannot rotate. A characteristic fixing member is used.
With this configuration, the restraining plate is held by the fixing member so as not to rotate, and the rotation preventing portion of the restraining plate connecting portion is brought into contact with the fixing surface of the fixing member. In addition, the above danger is prevented and workability is improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG.
FIG. 1 is an exploded perspective view of a vehicle-mounted battery pack (that is, an assembled battery) 12 in which a plurality of batteries 10 are integrally restrained by a battery restraining structure (battery restraining device) of the present invention.

As shown in FIG. 1, a battery array 14 is formed by stacking a plurality of batteries 10 closely in the thickness direction. The battery 10 is a flat resin box having one or a plurality of battery cells as secondary batteries such as a nickel-metal hydride battery, for example, and a positive electrode terminal and a negative electrode (not shown) for being connected in series. It has terminals. Further, small protrusions or ridges (not shown) are formed on the stacking surface of the battery 10, so that a gap (not shown) for allowing air to flow between the adjacent batteries 10 in the stacked state is formed. I have. Further, the battery 10 is provided with a pair of feet 16 protruding in the longitudinal direction at both ends in the longitudinal direction (direction perpendicular to the laminating direction) at the lower portion thereof.
A screw hole (not shown) into which a bolt (not shown) is fitted is provided on a bottom surface (not shown) of the foot portion 16.

The lower case 18 is a battery mounting member on which the battery 10 is mounted. Bolts (not shown) are inserted through a pair of mounting surfaces 20 on which the feet 16 of the battery 10 are mounted. Holes 22 are provided at predetermined intervals. A bolt (not shown) is attached to the lower case 18.
Of the battery 10 through the hole 22 from below
The battery 10 is fixed to the lower case 18 by being inserted through a screw hole (not shown). The bottom surface 24 of the lower case 18 is lower than the mounting surface 20, and when the battery 10 is fixed to the lower case 18, the lower surface of the battery 10 and the bottom surface 2 of the lower case 18 are fixed.
4, an air flow passage through which the cooling air flows is formed.

The battery 10 is not only fixed to the lower case 18 but also pressed in a direction approaching each other by a pair of end plates 26 and 28 functioning as restraint plates, and is integrally restrained. One end plate 26 is formed by plastic working from a metal plate material, and is a laminated plate portion 26 that is overlapped with the battery 10.
a, and upper, lower, left and right peripheral side plate portions 26b perpendicular to the laminated plate portion 26a. Further, a pair of insertion holes 26c through which the bolts 30 functioning as fastening members are inserted are formed in the lower edge of the laminated plate portion 26a, and the bolts 30 are inserted into the upper edge thereof. A pair of insertion holes (not shown) to be inserted are formed.

The other end plate 28 is also formed of a metal plate material, and includes a laminated plate portion 28a to be overlapped with the battery 10 and upper, lower, left and right peripheral side plate portions 28b perpendicular to the laminated plate portion 28a. Having. Laminated board 2
8a has a pair of upper convex portions 28c protruding upward from the upper edge.
And a pair of lower convex portions 28d protruding downward from the lower edge. The upper convex portion 28c and the lower convex portion 28d
Is formed with an insertion hole 28e through which the bolt 30 is inserted. Also, the battery 1 of the laminated plate portion 28a
A patch plate 32 that covers almost the entire surface of the zero side is fixed by spot welding at one or a plurality of locations.
The support plate 32 is a relatively thin metal plate material, the thickness of which is, for example, about 1.2 mm, a part of which is a laminated plate portion 2.
8a, it is fixed to the laminated plate portion 28a. The contact plate 32 is formed by a straight line formed between the battery 10 and the end plate 28 in order to equalize the cooling air flowing between the battery 10 and the end plate 28 disposed at the end of the battery row 14. Although not shown in FIG. 1, a similar contact plate 32 is also provided on the laminated plate portion 26 a of the other end plate 26.
Is fixed.

A pair of end plates 26 and 28 configured as described above are disposed at both ends of the battery row 14, respectively. A space between the end plates 26 and 28 is formed by a pair of lower restraining rods 34 and a pair of upper By being connected by the restraining rod 36, the battery row 14 is integrally restrained. The end plates 26 and 28 are fixed to the lower case 18 by nuts 38.

The lower restraining rod 34 connects the end plates 26 and 28 below the battery row 14 and functions as a restraining plate connecting member. The lower constraining rod 34 is a cylindrical or rod-shaped metal body, and has a screw hole on each end surface of which a bolt 30 is fitted and screwed. In addition, lower restraint lot 3
At one end of 4, a triangular metal plate is fixed by welding to form a detent plate portion 40. The detent plate portion 40 is relatively thin, and has a thickness of, for example, about 1.2 mm, similarly to the backing plate 32.

The upper restraining rod 36 connects the end plates 26 and 28 above the battery row 14.
The upper restraining rod 36 is also a rod-shaped metal body, and has screw holes at both ends for receiving the bolts 30. The two upper restraining rods 36 are integrated by connecting the end of one upper restraining rod 36 and the end of the other upper restraining rod 36 by a connecting plate 41.

The battery pack 12 configured as described above
Then, the cooling air for cooling the battery 10 is supplied from an air flow path formed between the battery row 14 and the lower case 18 to a gap (not shown) formed between the batteries 10 or the battery 10 and the backing plate 32. And flows above the battery 10.

To assemble the battery pack 12, the end plates 26 and 28 and the lower restraining rod 3
4 is required to be connected by bolts 30. To connect the lower restraining rod 34 to the end plates 26 and 28, first, the end on the side where the detent plate 40 is formed is connected to the end plate 28. Detent plate 40
If the end on the side where the detent plate portion 40 is not formed is connected to the end plate 26 before the end on the side where is formed is connected to the end plate 28, the lower restraining rod 34 and the bolt 30 Because it will rotate.

FIG. 2 shows a state in which one lower restraining rod 34 is connected to the end plate 28 and then the other lower restraining rod 34 is to be connected to the end plate 28 by bolts 30. The detent plate portion 40 has a section perpendicular to the axial direction of the lower restraining rod 34 (the contact plate 32).
(A cross section parallel to) is a triangle, and in that cross section, the distance from the axis of the lower restraining rod 34 to the outer peripheral edge is not uniform in the circumferential direction. Therefore, as shown by the lower restraining rod 34 fixed to the end plate 28 in FIG. 2, when the lower restraining rod 34 is in contact with the end plate 28, Since the lower surface 40a is brought into contact with the lower surface 32a of the backing plate 32, even when the bolt 30 is tightened with a rotating tool during the assembly operation, the lower restraining rod 34
Is prevented from rotating with the bolt 30.
Accordingly, the rotation preventing plate portion 40 functions as an anti-rotation plate (that is, an anti-rotation portion), the abutment plate 32 fixed to the end plate 28 functions as a contact portion, and the lower surface 32a of the abutment plate 32 serves as an anti-rotation portion. Function as a fixed surface that is brought into contact with the anti-rotation portion in the rotation direction.

When the bolt 30 is screwed into the screw hole (not shown) of the lower restraining rod 34 through the insertion hole 28e of the lower projection 28d of the end plate 28, the screw can be tightened without using a special jig. However, when using a tool that can be tightened with a strong force such as an impact wrench, it is preferable to use a jig for fixing the end plate 28 in order to secure work safety. FIG. 3 shows an example of the jig, which is a gravity-pressing type restraint plate fixing jig 42.

The fixing plate fixing jig 42 shown in FIG. 3 includes a flat mounting plate 44 on which the end plate 28 is mounted.
Four legs 46 are fixed to the lower surface of the mounting plate 44. The length of the leg 46 is set so that the mounting plate 44 is at a height at which an operator can easily work.

A pair of cutouts 48 are formed on one of the pair of long side surfaces of the mounting plate 44 so as to penetrate in the vertical direction and extend toward the other long side surface. This notch 48
Is a portion where the lower restraining rod 34 is inserted in a state parallel to the vertical direction, and the widthwise dimension of the notch 48 (the dimension parallel to the long side of the mounting plate 44) is On the edge side, the diameter is slightly larger than the diameter of the lower restraint rod 34, and on the distal end side, the diameter is substantially equal to the diameter of the lower restraint rod 34. A triangular fitting groove 50 that fits with the detent plate portion 40 is provided at the distal end side of the notch portion 48.
Are formed. Further, the fitting groove 50 is provided on the stopper plate portion 40 and the backing plate 32 fixed to the end plate 28.
When the end plate 28 is placed, it is provided at a position where it does not overlap with the backing plate 32 in the vertical direction when the end plate 28 is placed.

An edge along the long side of the mounting plate 44 on which the notch 48 is provided is provided on both sides of the pair of notches 48 with the lower protruding portion 28d of the end plate 28.
Fitting projections 52 protruding upward so as to fit with
a, 52b and 52c are formed. Further, the edge of the mounting plate 44 along the long side surface opposite to the side where the notch portion 48 is provided is provided with the upper convex portion 28 of the end plate 28.
A pair of columnar projections 54 are provided to be fitted into the insertion holes 28e provided in c.

When connecting the end plate 28 and the lower restraining rod 34 using the restraining plate fixing jig 42, the operation is performed in the following procedure. First, the lower restraining rod 34, which is parallel to the vertical direction, is fitted into the cutout 48, and the detent plate 40 is fitted into the fitting groove 50. Subsequently, the columnar projection 54 is inserted into the insertion hole 28e formed in the upper convex portion 28c of the end plate 28 with the backing plate 32 being on the lower side, and the end plate 28 is
Place on 4. In this state, the end plate 28
Is held on the mounting plate 44 by the columnar projections 54 and the fitting projections 52 so as not to rotate in the horizontal direction, that is, the rotation direction of the bolt 30. Further, as described above, since the backing plate 32 is only partially welded to the laminated plate portion 28a, a gap may be formed between the backing plate 32 and the laminated plate portion 28a. In this state, since the end plate 28 presses the contact plate 32 by gravity, formation of a gap between the contact plate 32 and the laminated plate portion 28a is prevented. If the lower restraining rod 34 and the end plate 28 are to be connected to each other with the gap formed, the detent plate 40 enters the gap, and the rotation of the lower restraining rod 34 is prevented by the detent plate 40. It may not be possible to prevent it.

Subsequently, the bolt 30 is connected to the end plate 2
8 is screwed into the screw hole of the lower restraint rod 34 through the insertion hole 28e provided in the lower convex portion 28d. When the bolt 30 is tightened, the lower restraint rod 3
Since the side surface 40a of the 4 detent plate portion 40 is brought into contact with the side surface 50a of the fitting groove 50, the lower restraining rod 34 does not rotate. Therefore, the restraint plate fixing jig 42 functions as a fixing member, and the side surface 50a of the fitting groove 50 functions as a fixing surface that is brought into contact with the rotation preventing portion in the rotation direction of the rotation preventing portion. When the bolt 30 is further tightened, the side surface 40 a of the detent plate portion 40 of the lower restraining rod 34 is finally brought into contact with the lower side surface 32 a of the backing plate 32, whereby the lower restraining rod 34 is prevented from rotating.

As described above, in this embodiment, the end plate 28 is non-rotatably held by the restraining plate fixing jig 42, and the rotation preventing plate portion 40 of the lower restraining rod 34 contacts the side surface 50 a of the fitting groove 50. Since the rotation of the lower restraint rod 34 is prevented by being brought into contact with the lower restraint rod 3, the lower restraint rod 3
The workability of the work of connecting the end plate 4 and the end plate 28 is improved.

Further, finally, the rotation preventing plate portion 40 is brought into contact with the backing plate 32 to prevent the lower restraining rod 34 from rotating together with the bolt 30.
Therefore, the workability when integrally restraining the plurality of batteries 10 is improved. The bolt 30 is connected to the lower restraining rod 3.
4 is screwed in the clockwise rotation direction so as to advance in the axial direction of the end plate 4.
The force by which the batteries 6 and 28 press the battery 10 is also supported by the lower restraint rod 34. Therefore, the end plates 26 and 28 do not require much strength, so that the end plates 26 and 28 can be reduced in weight.

Further, since the detent plate portion 40 is relatively thin, the battery 10 and the backing plate 3 arranged at the end in the stacking direction are arranged.
There is no adverse effect on the flow of the cooling air between them.

While the embodiment of the present invention has been described with reference to the drawings, the present invention can be applied to other embodiments.

For example, in the above-described embodiment, the lower restraining rod 34 is provided with the rotation preventing plate portion 40 as a rotation preventing portion. However, as shown in FIG.
A locking claw 60 may be provided at an end of the lower restraining rod 34 so as to be fixed to the lower restraining rod 34 so as not to rotate relative thereto. The latching claw 60 has a base 62 perpendicular to the axis of the lower restraining rod 34 and an axis of the lower restraining rod 34 from the base 62 at a position not on the axis of the lower restraining rod 34. And a claw portion 64 projecting in parallel. In FIG. 4, a hole 66 is formed in the lower protrusion 28 d of the end plate 28, and the claw portion 64 is fitted into the hole 66, thereby preventing the rotation of the lower restraint rod 34. In this case, the end plate 28 is not provided with the hole 66, and as shown in FIG.
It may be configured to be hooked by the outer edge of d.

In the above-described embodiment, the gravity-pressing type restraint plate fixing jig 42 for preventing a gap from being formed between the backing plate 32 and the laminated plate portion 28a by the weight of the end plate 28 is used. However, as shown in FIG.
A spring-pressing-type restraint plate fixing jig 72 for preventing a gap from being formed between the backing plate 32 and the laminated plate portion 28a due to the pressing force of the above may be used. This fixing plate fixing jig 72
Is used by being fixed to a predetermined work table (not shown). When the restraining plate fixing jig 72 is used, first, the detent plate portion 4
0 is located in the end plate accommodating space 74, and the pair of lower restraining rods 34 are fitted into the pair of restraining rod introduction grooves 76, respectively, and the lower restraining rods 34 are positioned at the lowermost portions of the restraining rod introduction grooves 76. Position. At this time, the other end of the lower restraining rod 34 is supported by a support (not shown) so that the lower restraining rod 34 is horizontal. Subsequently, the pressing member 78 is moved to the side where the spring 70 is contracted, and in this state, the lower protruding portion 28d of the end plate 28 is fitted into the pair of fitting concave portions 80 and the pressing plate 32
The end plate 28 is set on the restraining plate fixing jig 72 so that the end plate 28 is on the opposite side to the pressing member 78, and then the end plate 28 is pressed by the pressing member 78. This prevents a gap between the laminated plate portion 28a of the end plate 28 and the backing plate 32 due to the pressing force of the spring 70. The lowermost position of the restraining rod introduction groove 76 is such that when the rotation preventing plate portion 40 is rotated, the rotation preventing plate portion 40 and the lower surface 32a of the backing plate 32 are rotated.
Are set at positions where they abut. If the bolt 30 is tightened in this state, the lower restraining rod 34 and the end plate 28 can be connected without the lower restraining rod 34 rotating together with the bolt 30.

Further, instead of the above-described restraint plate fixing jig 42, a restraint plate fixing jig 90 shown in FIG. 7 may be used. The constraint plate fixing jig 90 of FIG. 7 is a gravity pressing type similarly to the above-described constraint plate fixing jig 42. In FIG. 7,
Portions having the same configuration as the above-described restraint plate fixing jig 42 are denoted by the same reference numerals. 7 is a restraining plate fixing jig 90 shown in FIG.
Prevents the lower restraining rod 34 from rotating around the axis by a pair of pins 92 instead of the fitting groove 50. The restraining plate fixing jig 90 includes a mounting plate 94 on which the end plate 28 is mounted, and the mounting plate 94 has a cutout 48 similar to the above-described restraining plate fixing jig 42. When the lower restraining rod 34 is fitted into the distal end of the notch 48, the detent plate portion 40 is provided at the distal end side of the notch 48.
A pin 92 having a length (e.g., 1.2 mm) equal to the thickness of the rotation preventing plate portion 40 is fixedly provided at a position where the pin 92 can be fitted to the through hole 40b formed. If the lower restraining rod 34 is fitted into the cutout portion 48 so that the pin 92 and the through hole 40b of the rotation preventing plate portion 40 fit together, the lower restraining rod 34 is tightened when the bolt 30 is tightened. Rotation with 30 is prevented.

When the above-described restraint plate fixing jig 42 is used, since the rotation of the lower restraint rod 34 is prevented by the fitting groove 50, the contact plate 32 is attached to the end plate 28.
May not be fixed. On the contrary, even if the fitting groove 50 is not formed in the restraining plate fixing jig 42, the rotation of the lower restraining rod 34 is prevented by the backing plate 32 of the end plate 28, so that the fitting groove 50 is formed. It may not be provided.

In the above-described embodiment, the detent plate portion 4
0 is a triangle, but may be another polygon such as a quadrangle or an ellipse. The detent plate portion 40 is provided at the end of the lower restraining rod 34 on the side fixed to the end plate 28. However, the other end portion and the center portion of the lower restraining rod 34 are provided at the end plate. The rotation preventing plate portion 40 may be provided at a position other than the end portion on the side fixed to the fixing member 28. Further, the entire lower restraint rod 34 may be formed in a triangular shape or the like and function as a rotation preventing portion. When the rotation preventing portion is provided in addition to the end fixed to the end plate 28 as described above, for example, the rotation preventing plate portion 4 is provided at the end opposite to the end fixed to the end plate 28.
When 0 is provided, for example, the restraining plate fixing jig 72 of FIG. 6 is used, and a fitting groove for fitting with the rotation preventing plate portion 40 is provided on a support table (not shown) that supports the end portion. The rotation of the lower restraint rod 34 around the axis is prevented by fitting the rotation stopper plate portion 40 with the rotation stopper plate portion 40.

In the above-described embodiment, the bolt 30 is used as a tightening member, and the lower restraining rod 34 is provided with a screw hole into which the bolt 30 is fitted. However, a nut is used as the tightening member. May be used. In this case, a thread groove into which the nut is screwed is formed on the outer peripheral surface of the end portion of the restraining rod.

Although the embodiment of the present invention has been described in detail with reference to the drawings, this is merely an embodiment,
The present invention can be carried out in various modified and improved modes based on the knowledge of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a vehicle-mounted battery pack in which a plurality of batteries are integrally restrained by a battery restraining structure of the present invention.

FIG. 2 is a view showing a state in which the lower restraint rod of FIG. 1 is connected to an end plate.

FIG. 3 is a perspective view showing a restraining plate fixing jig used for connecting an end plate and a lower restraining rod.

FIG. 4 is a view showing a portion connected to the lower restraint rod and the lower restraint rod of the end plate, and is a view showing another form different from FIG. 2;

FIG. 5 is a view showing a portion connected to the lower restraint rod and the lower restraint rod of the end plate, and is a view showing another form different from FIGS. 2 and 4;

FIG. 6 is a perspective view showing a restraining plate fixing jig used when connecting the end plate and the lower restraining rod, which is different from FIG.

FIG. 7 is a perspective view showing a restraining plate fixing jig used for connecting the end plate and the lower restraining rod, which is different from FIGS. 3 and 6;

[Explanation of symbols]

 10: Battery 26: End plate (restraint plate) 28: End plate (restraint plate) 30: Bolt (fastening member) 32: Patch plate (contact portion) 34: Lower restraining rod (restraint plate connecting member) 40: Detent plate (rotation prevention part, rotation prevention plate) 42: Fixing plate fixing jig (fixing member) 50: Fitting groove 50a: Side surface (fixing surface)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Nobuaki Kitani 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Corporation (72) Inventor Tsuyoshi Hayashi 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Corporation ( 72) Inventor Kenichi Usui 100, Kutoku-cho, Ogaki-shi, Gifu Pref. Within Taiheiyo Kogyo Co., Ltd. 555 Sakaijuku, Kosai-shi, Panasonic EV Energy Co., Ltd. (72) Inventor: Tsutomu Araki 555 Sakaijuku, Kosai-shi, Shizuoka Prefecture, Panasonic EV Energy Co., Ltd. F-term (reference) 5H040 AA03 AS07 AT02 AT06 AY08 CC20 CC24 CC36 CC44

Claims (4)

[Claims] 1. A pair of restraint plates disposed at both ends in a stacking direction of a plurality of stacked batteries, a restraint plate connecting member for connecting the restraint plates, and a restraint from an end of the restraint plate connecting member. A fastening member which is fastened in the axial direction of the plate connecting member, wherein the fastening member is fastened, whereby the pair of restraining plates press the plurality of batteries in a direction approaching each other, and A battery restraining structure for integrally restraining a battery, wherein a rotation preventing portion for preventing rotation of the restraining plate connecting member about an axis is formed on the restraining plate connecting member. Battery restraining structure. 2. The rotation-preventing portion is a part or the entirety of the restraining plate connecting member, and the cross-sectional shape of the restraining plate connecting member perpendicular to the axial direction has a circumferential distance from an axis to an outer peripheral edge. The rotation preventing portion is brought into contact with a predetermined fixing member whose position is fixed in the rotation direction of the restraint plate connecting member. The battery restraining structure according to claim 1. 3. The rotation preventing portion is provided at at least one end of the restraining plate connecting member in a section perpendicular to the axial direction of the restraining plate connecting member from an axis of the restraining plate connecting member to an outer peripheral edge. An anti-rotation plate fixed so that a distance becomes non-uniform in a circumferential direction, wherein the restraining plate is provided with a contact portion that is in contact with the anti-rotation plate in a rotation direction of the restraining plate connecting member. The battery restraining structure according to claim 2, wherein 4. The fixing member according to claim 2, further comprising a fixing surface fixed in position and abutted against the rotation preventing portion in a rotation direction of the rotation preventing portion, and rotating the restraining plate. A fixing member which is held so as to be impossible.