JP2003346754A - Battery pack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery pack in which the upper part of the whole module can be covered in a lump by engaging one by one and sliding the lid cover with the lid cover locking part installed at the upper top end part of each resin frame. <P>SOLUTION: For the battery pack, modules, formed by surrounding non- aqueous electrolyte secondary batteries 1 which are held by a resin frame 2, 2 are arranged one or more pieces in the longitudinal directions, and each resin frame 2 is clipped and fixed from both front and rear sides of these modules by a side plate 3, 3 and a bolt 4. Lid cover locking parts 2g, 2g are provided at right and left top end parts of each resin frame 2 and a lid cover 5 capable of sliding in the longitudinal direction is arranged at the upper top end part of these resin frames 2 by engaging the side edge of the right and left directions with these lid cover locking parts 2g, 2g. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembled battery in which modules surrounded by a frame are arranged and fixed.

[0002]

[0003] 2. Description of the Related Art [0004] A general assembled battery often has a plurality of batteries collectively stored in a single assembled battery frame. However, in such an assembled battery, an assembled battery frame must be produced by resin molding or the like for each number of batteries to be combined, and an assembled battery in which an arbitrary number of batteries are combined according to the demands of the consumer is supplied. It is not easy.

Therefore, each battery is surrounded by a frame made of resin or the like to form a module, and a plurality of modules are arranged and fixed so that an assembled battery in which an arbitrary number of batteries are combined can be manufactured. The proposal to do is made conventionally.

[0004]

However, the assembled battery is
Since the terminals of each battery constituting the assembled battery are connected by a connecting rod or the like, there is a demand for protecting the connecting portion by covering the upper part. However, if the assembled battery frame accommodates a plurality of batteries together, the upper end opening can be covered with a cover after completing the connection work, but in the case of an assembled battery in which any number of modules are arranged Since the connection work between the batteries is not yet performed with the module alone, this connection part cannot be covered, and if the upper part of each module is covered individually after forming the assembled battery, the work becomes troublesome. was there.

The present invention has been made in order to cope with such a situation, and by sliding the cover cover by sequentially engaging the cover cover with the cover cover locking portion provided at the upper end portion of each frame, It aims at providing the assembled battery which can cover the upper part of altogether.

[0006]

According to the first aspect of the present invention, one or more modules in which the periphery of the battery is surrounded by a frame are arranged in the front-rear direction, and each frame is attached from both the front and rear sides of these modules by the clamping and fixing means. In the assembled battery clamped and fixed, lid cover locking portions are provided on the left and right of the upper end of each frame,
A lid cover that is slidable in the front-rear direction by engaging side edge portions in the left-right direction with these lid cover locking portions is arranged at the upper end of these frames.

According to the first aspect of the present invention, the lid cover is inserted between the module disposed at the end of the assembled battery and the lid cover engaging portions provided at the front and rear of the upper end portion of the frame body, so that the side edge portion is inserted. The upper part of this assembled battery can be covered with a lid cover by being engaged with these lid cover engaging portions and sliding.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view showing the overall configuration of a battery pack, and FIG. 2 is a perspective view showing the configuration of a nonaqueous electrolyte secondary battery. 3 is a perspective view showing the configuration of the resin frame, and FIG. 4 is a front view and a side view showing the configuration of the side plate.

In the present embodiment, as shown in FIG. 1, an assembled battery in which seven nonaqueous electrolyte secondary batteries 1 are combined will be described. As shown in FIG. 2, each non-aqueous electrolyte secondary battery 1 is not shown inside a casing-like battery container 1a made of a stainless steel plate having a narrow front and rear width compared to the vertical depth and the horizontal length. Two long cylindrical winding type power generation elements are stored side by side, and the upper end opening of the battery container 1a is closed with a rectangular lid plate 1b made of stainless steel plate. From both left and right ends, the positive terminal 1c is directed upward.
And a negative terminal 1d. In addition, the battery container 1a of the nonaqueous electrolyte secondary battery 1 is provided with a safety valve 1e on the right side surface. The safety valve 1e is formed by attaching a metal film having a thickness of about 50 μm to a hole opened on the side surface of the battery container 1a made of stainless steel plate, and this metal film when the inside of the battery becomes an abnormally high pressure. Is intended to prevent the nonaqueous electrolyte secondary battery 1 from being ruptured by breaking and degassing. However, if such a thin metal foil is exposed at the safety valve 1e, the non-aqueous electrolyte secondary battery 1 can be easily damaged simply by hitting a pointed object from the outside.
May become unusable. The non-aqueous electrolyte secondary battery 1 is actually covered with a thick tube-shaped heat shrink resin (not shown) from above and thermally shrunk to cover the periphery. Since the heat shrink resin is made of a very thin resin film, if the internal pressure of the battery becomes high and the safety valve 1e is opened, the resin film is also broken by this pressure, so that the operation of the safety valve 1e may be hindered. Absent.

As shown in FIG. 1, each of the nonaqueous electrolyte secondary batteries 1 is a module having both front and rear sides sandwiched between a pair of resin frames 2 and 2. The module is a structural unit of an assembled battery including one non-aqueous electrolyte secondary battery 1 and a pair of resin frames 2 and 2 surrounding the non-aqueous electrolyte secondary battery 1, and the assembled battery shown in FIG. Seven pieces are arranged side by side and sandwiched by side plates 3 and 3 from both sides. Therefore, since the number of the modules that are sandwiched side by side can be freely changed, an assembled battery including any number of nonaqueous electrolyte secondary batteries 1 can be manufactured.

Each of the resin frames 2 is a frame formed by molding a polybutylene terephthalate (PBT) resin. As shown in FIG. 3, the pair of resin frames 2 are formed with a concave battery housing portion 2a into which the front half of the nonaqueous electrolyte secondary battery 1 of FIG. The frame having the same shape as this and having the same shape rotated halfway so that the front-rear direction is reversed and arranged on the rear side in FIG. Then, the rear half of the nonaqueous electrolyte secondary battery 1 of FIG. 2 is fitted into the battery housing portion 2a of the other resin frame 2, and the end surfaces of the pair of resin frames 2 and 2 are overlapped. It becomes a module. When assembling such a module, actually, a buffer material (not shown) is pasted particularly near the bottom surface of the battery housing portion 2a of each resin frame 2, and the battery container 1 of the nonaqueous electrolyte secondary battery 1 is attached.
The gap between a is filled. Therefore, when the resin frames 2 and 2 forming a pair of modules are sandwiched from both sides in the front-rear direction, the battery housing portions 2a and 2
Since the buffer material is pressed and interposed between the battery container 1a of the non-aqueous electrolyte secondary battery 1 and the non-aqueous electrolyte secondary battery 1, the non-aqueous electrolyte secondary battery 1 can be stored without rattling and externally. Even when subjected to impact or vibration from the battery, the impact or the like directly applied to the nonaqueous electrolyte secondary battery 1 can be mitigated.

As shown in FIG. 3, each resin frame 2 has a battery accommodating portion 2a when it becomes a front end face, that is, a module.
On the outer end surface facing the outside opposite to the inner nonaqueous electrolyte secondary battery 1 sandwiched between the windows, a window portion 2b is formed that is open to most of the portion excluding the peripheral portion. Further, since the window portion 2b is opened as it is to the front side of the left and right side surfaces, the upper and lower portions of the resin frame 2 are a pair of shielding plates that are elongated vertically on the rear side of the left and right side surfaces. They are connected only through the parts 2c and 2c. As a result, when the resin frames 2 and 2 are paired to form a module with the nonaqueous electrolyte secondary battery 1 sandwiched therebetween, the shielding plate portions 2c and 2c of both the resin frames 2 and 2 are adjacent to each other without a gap in the center. This non-aqueous electrolyte secondary battery 1
The center of the left and right side surfaces will be blocked. Further, since these shielding plate portions 2c and 2c are arranged slightly outside on the left and right sides of the inner side surface of the battery housing portion 2a, they are not immediately before the left and right side surfaces of the nonaqueous electrolyte secondary battery 1, but are slightly spaced. Will be placed open. Therefore, in the further right direction of the safety valve 1e formed on the right side surface of the nonaqueous electrolyte secondary battery 1, the shielding plate portion 2 adjacent on the right side of the pair of resin frames 2, 2 is provided.
Since c and 2c are arranged with a gap, even if the safety valve 1e is opened and the electrolyte is ejected together with the high-pressure gas when the battery is abnormal, the shielding plates 2c and 2c are blocked by the shielding plate portions 2c and 2c. It becomes possible to prevent scattering to the range.

Each of the resin frames 2 has uneven portions 2d formed at the four corners of the outer end surface. Each uneven portion 2d
In the case of FIG. 3 a little from the inner surface of the battery housing portion 2a, two oval convex portions are projected on a vertical flat surface located in front of the battery accommodating portion 2a. Are formed with a recess. Further, the left and right uneven portions 2d are formed so that the positions of the convex portions and the concave portions are reversed. Therefore, when the modules are arranged in the front-rear direction, the outer end surface of the front resin frame 2 of the rear module and the outer end surface of the rear resin frame 2 of the module adjacent to the front side are overlapped back to back. The convex part of each concavo-convex part 2d of one resin frame 2 fits into the concave part of each concavo-convex part 2d of the other resin frame 2, and these adjacent modules are sandwiched from the front-rear direction, so that the vertical direction and the horizontal direction It is possible to prevent the positions of each other from shifting. Moreover, at the time of an assembly, these uneven | corrugated | grooved parts 2d fit together, and it becomes possible to position the arranged module now. Further, between the adjacent modules, each one of the resin frames 2 is brought into close contact with each other by these concave and convex portions 2d, so that a gap is generated between the nonaqueous electrolyte secondary batteries 1 and 1 of these modules. Therefore, between adjacent modules, the window portion 2 of the back-to-back resin frames 2 and 2 is used.
Since the cooling air in the horizontal direction can flow between the side surfaces of the non-aqueous electrolyte secondary batteries 1 and 1 through b and 2b, the non-aqueous electrolyte secondary battery 1 of the assembled battery can be reliably cooled. become. In addition, if a gap is provided between the widest side surfaces of the nonaqueous electrolyte secondary batteries 1 and 1 as described above, an abnormality detection sensor that detects the swelling of the side surface of the battery container 1a due to the pressure increase inside the battery. Can be attached, and the safety of the assembled battery can be improved.

The pair of resin frames 2 and 2 are formed in a substantially symmetrical shape in order to use the same parts by half rotation as described above. However, since only the concave and convex portion 2d is formed so that the positions of the convex portion and the concave portion are different on the left and right, it is not an accurate left-right symmetrical shape.

Each of the resin frames 2 is formed with two through holes 2e below the concave and convex portions 2d, 2d on the left and right sides of the lower part and near the central part on the left and right above the window part 2b. . These through holes 2e are formed through the through bolts 4 shown in FIG.
The resin bolt 2 is surrounded by the width of the resin frame 2 in the front-rear direction so that the through-bolts 4 are not exposed except at both ends of the assembled battery when modules are arranged. Covered with. That is, as shown in FIG. 3, the lower two through holes 2e and 2e are formed as holes penetrating the frame-like portion below the battery housing portion 2a, and the upper two through holes 2e and 2e are A cylindrical shape is formed on the cross-shaped portion above the battery housing portion 2a. Therefore, as shown in FIG. 1, seven modules are arranged in the front and rear direction, and the four through bolts 4 are passed through the through holes 2e of the resin frames 2 to be bolt holes 3d of the side plates 3 and 3 disposed at both ends. These nuts 7 are screwed onto both ends of each through-bolt 4 via
Each pair of resin frames 2 and 2 of the module can be clamped and fixed, and thereby, the seven nonaqueous electrolyte secondary batteries 1 are reliably supported. In each module, since the through bolts 4 made of stainless steel are not exposed by being covered with the resin frames 2 and 2 as a pair, reliable insulation can be maintained, and the through bolts 4 can be maintained. When the nuts are screwed to both ends, each resin frame 2
Can be securely clamped.

Each of the resin frames 2 has two through holes 2e and 2e formed on a cross-shaped portion above the battery housing portion 2a.
In between, the wiring latching | locking part 2f and 2f are protrudingly provided facing inward. Non-aqueous electrolyte secondary battery 1 for each module
The terminals 1c and 1d are connected in series between the terminals 1c and 1d of the non-aqueous electrolyte secondary battery 1 of the adjacent module by a connecting rod (not shown) disposed on the top of the resin frame 2.
Further, these terminals 1c and 1d are connected to a wiring to a management device for monitoring charge / discharge voltage and the like. The wiring locking portions 2f and 2f of each resin frame 2 are for locking the wiring when the wiring is pulled out to the front of the assembled battery through the upper part of each resin frame 2, whereby the wiring is assembled. It is possible to prevent the battery from spreading out above and to the side of the battery and obstructing handling.

Each of the resin frames 2 has lid cover engaging portions 2g and 2g projecting upward from both end portions of the cross-shaped portion above the battery housing portion 2a. The lid cover engaging portions 2g and 2g are horizontally flat lid cover support portions arranged sufficiently above the cross-shaped portion, and bend in a hook shape and project further above the lid cover support portions. It consists of a slide guide part. When such lid cover engaging portions 2g, 2g are formed on the resin frames 2 of the seven modules of the assembled battery, the side edges in the left-right direction of the flat lid cover 5 as shown in FIG. Can be engaged and slid in the front-rear direction. That is, for example, the left and right side edge portions of the front end of the lid cover 5 are first placed on the lid cover locking portions 2g and 2g on the lid cover support portions on the uppermost side of the resin frame 2 at the rearmost side of the assembled battery. The left and right side edge portions are sequentially moved to the front side resin frame 2 while the lid cover 5 is slid forwardly while being inserted between the slide guide portions.
By engaging with the lid cover engaging portions 2g, 2g, the upper part of the assembled battery can be covered. However, before attaching the lid cover 5, the operation of connecting the connecting rod or connecting the wiring between the terminals 1c and 1d of each non-aqueous electrolyte secondary battery 1 is completed. These terminals 1c,
The wiring 1d is connected to the wiring locking portion 2 of each resin frame 2 as described above.
If they are locked together at f and 2f, they will not interfere with the operation of attaching the lid cover 5. The lid cover 5 has a square plate shape made of resin, but is provided with cutouts at two corners located at opposite ends on the diagonal line,
From here, the non-aqueous electrolyte secondary batteries 1, 1 of the modules at both ends
The terminals 1c and 1d are exposed. The terminals 1c and 1d of the seven nonaqueous electrolyte secondary batteries 1 are
Since the adjacent ones other than those exposed at the cutout portion of the lid cover 5 are connected in series by a connecting rod, the exposed pair of terminals 1c and 1d serve as positive and negative terminals of the assembled battery. In the present embodiment, since an assembled battery in which an odd number of nonaqueous electrolyte secondary batteries 1 are combined is described, the positive and negative terminals of the assembled battery are arranged at both ends on a diagonal line. In the case of the assembled battery in which the non-aqueous electrolyte secondary battery 1 is combined, it is disposed at both ends of either the left or right side.

As shown in FIG. 1, the side plates 3 and 3 are made of a stainless steel plate having the same size as the outer end surface of the resin frame 2, and are arranged at both ends in the front-rear direction in which seven modules are arranged. As shown in FIG. 4, each side plate 3 is made of a convex-shaped stainless steel plate with a flat surface arranged vertically, but the lower end side is bent to project horizontally to the opposite side of the module, thereby reinforcing the reinforcing portion 3a. Forming. Further, at both ends between the main body of the side plate 3 and the reinforcing portion 3a, ribs 3b and 3b, in which a stainless steel plate is formed into a substantially right-angled isosceles triangle shape and two orthogonal sides are welded, are joined. Further, the side plate 3 forms a grip portion 3c by bending the upper end side of the convex-shaped main body and projecting it horizontally on the side opposite to the module. Thus, each side plate 3 is not a simple flat stainless steel plate, but bends the upper and lower ends to form the reinforcing portion 3a and the grip portion 3c, and ribs 3b and 3b are provided between the main body and the reinforcing portion 3a. Because it is joined
It is possible to sandwich seven heavy nonaqueous electrolyte secondary battery 1 modules arranged with sufficient strength from both sides. Further, the reinforcing portion 3a of each side plate 3 enhances stability when the assembled battery is installed, and as shown in FIG. 1, it is easy to install and fix with bolts and nuts by providing a U-shaped notch. Will be able to.

As shown in FIG. 4, the side plates 3 and 3 disposed at the front and rear ends of the seven modules are arranged at the four positions on both sides near the lower end both ends and the center of the upper end as shown in FIG. Bolt holes 3d are formed, and through these bolt holes 3d, the four through bolts 4 are passed through the through holes 2e of the resin frames 2 of the seven modules. As shown in FIG. By screwing nuts to both ends of the bolt 4, seven non-aqueous electrolyte secondary batteries 1 are connected to each pair of resin frames 2, 2.
And pinch and fix. At this time, the main body of each side plate 3 faces the outer end surface of the resin frame 2 at the outermost end, but in reality, the tip of the convex portion of the concave and convex portion 2d comes into contact with the opening edge portion of the through hole 2e. There is a slight gap between them. For this reason,
The through bolts 4 have bolt holes 3 in both side plates 3 and 3 in advance.
A washer (not shown) serving as a spacer is fitted on the module side through which d passes, so that a gap between the opening edge of the through hole 2e of the resin frame 2 at the end is eliminated. Accordingly, in the absence of this washer, if a nut is screwed onto both ends of the through bolt 4, the vicinity of the bolt hole 3d of the side plates 3 and 3 is bent toward the opening edge of the through hole 2e of the resin frame 2 at the end. In this way, it is possible to prevent the resin frame 2 from being pinched and stabilized. Each through-bolt 4 has a bolt head at one end, or has a nut screwed into this end in advance and fixed by welding or the like. Screwing can be performed only at the other end.

Each side plate 3 is provided with a pair of claw portions 3e and 3e projecting toward the holding module at the upper ends of both ends of the main body. These claw portions 3e, 3e are obtained by bending a plate piece protruding left and right from the main body of the side plate 3 toward the rear or the front, and the left and right sides of the upper end portion of the resin frame 2 at the extreme end are sandwiched between the left and right sides. It is designed to be sandwiched from both sides.
The resin frames 2 and 2 that form a pair of each module have a battery housing portion 2.
By fitting the non-aqueous electrolyte secondary battery 1 into a, it is securely engaged without shifting in the vertical and horizontal directions, and the convex portions of the resin frames 2 and 2 between the modules are also fitted into the concave portions by the concave and convex portions 2d. Thus, the engagement is ensured without shifting in the vertical and horizontal directions. However, when there are no claw portions 3e, 3e,
Since the side plate 3 and the resin frame 2 simply overlap,
Engagement becomes unstable. However, since each side plate 3 is provided with claw portions 3e, 3e, the claw portions 3e, 3e are provided.
By sandwiching at least the endmost resin frame 2 from the left and right sides, e can be reliably engaged, and the assembled battery can be held and fixed stably. In addition, in the present embodiment, since groove-like depressions are formed on both side surfaces of the resin frame 2 sandwiched by the claw portions 3e, 3e, it can be reliably engaged in the vertical direction. .

Further, as shown in FIG. 4, at least one of the side plates 3 is provided with an oblong wiring hole 3f in the lower center of the main body, which is opposite to the module of the main body. A management device (not shown) is attached to the end face, and a side plate cover 6 shown in FIG. 1 is attached.
The wiring holes 3f are provided on the terminals 1 of the seven nonaqueous electrolyte secondary batteries 1.
c and 1d connected to the wire locking portion 2f of each resin frame 2 through the outside of the upper frame portion of the resin frame 2 and the module from the module side of the body of the side plate 3 Is a hole that is drawn out to the opposite side, whereby the management device and the terminals 1c, 1d of each non-aqueous electrolyte secondary battery 1
Will be able to connect between. Therefore, the battery pack management device is used as the terminal 1c, 1 of the non-aqueous electrolyte secondary battery 1.
It is not necessary to arrange at the upper end where the connection with d is made, and space efficiency can be improved by attaching to the side plate 3 at either end in the front-rear direction. The side plate cover 6 is for protecting the management device and is screwed to the side plate 3. The management device may be attached to both side plates 3, 3, but if attached to one side, the wiring hole 3 f may be formed only in this one side plate 3. However, these side plates 3 and 3
Since it can be made a common part by making it left-right symmetrical, the wiring hole 3f may be formed in both side plates 3 even when the management device is attached only to one side plate 3.

The side plates 3 and 3 are provided with an insulating coating on the surface of a stainless steel plate. Accordingly, by surrounding the nonaqueous electrolyte secondary battery 1 together with the insulating resin frame 2, the insulation property of the entire assembled battery can be enhanced. In addition, since the material itself is made of a stainless steel plate, it has sufficient rigidity, and also has high corrosion resistance against the electrolytic solution, moisture salt, etc., and the safety of the assembled battery can be improved.

With the above configuration, according to the present embodiment, the lid cover engaging portions 2g and 2g are formed at the upper end portions of the resin frames 2 and 2 which form a pair of each module. The upper part of the assembled battery can be easily covered by engaging and sliding the edge. Therefore,
Even for an assembled battery in which any number of non-aqueous electrolyte secondary batteries 1 are combined, the lid cover 5 that covers the connecting portions of the terminals 1c and 1d can be easily obtained simply by preparing the lid cover 5 having different lengths in the front-rear direction. Can be attached to.

In the above embodiment, the case where the through bolt 4 is used for clamping is shown. However, if a plurality of modules arranged in the front-rear direction are clamped and fixed from both the front and rear sides, such a bolt is used. The holding and fixing means of any configuration can be used without being limited to the shape. In the above embodiment, a case is shown in which a plurality of modules are clamped and fixed by the side plates 3 and 3 arranged at both front and rear ends. However, depending on the configuration of the clamping and fixing means, such side plates 3 and 3 are not used. Nipping and fixing can also be performed.

Further, in the above embodiment, the case where the module is formed by sandwiching the nonaqueous electrolyte secondary battery 1 between the pair of resin frames 2 and 2 is shown. For example, the nonaqueous electrolyte is formed in a single container-shaped resin frame. A module can be formed by fitting the secondary battery 1 from above and storing it, and any structure may be used as long as it surrounds the non-aqueous electrolyte secondary battery 1. Furthermore, in the said embodiment, although the case where the resin-made resin frames were used was shown, the material of this frame is not limited.

In the above embodiment, the case where the assembled battery is configured by arranging a plurality of modules each enclosing the non-aqueous electrolyte secondary battery 1 with a frame is shown. However, if the number of modules is at least one, The present invention can be implemented. Furthermore, in the said embodiment, although shown about the assembled battery which combined the nonaqueous electrolyte secondary battery 1, it can implement similarly to the assembled battery using another kind of battery.

[0028]

As is apparent from the above description, according to the assembled battery of the present invention, the upper part of the assembled battery can be moved by sliding one lid cover by the lid cover engaging portion provided on each frame. Since the battery can be covered, even if the assembled battery is a combination of modules of different numbers, it is possible to easily protect the terminal connection portion of each battery simply by preparing lid covers having different lengths.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of an assembled battery according to an embodiment of the present invention.

FIG. 2, showing an embodiment of the present invention, is a perspective view showing a configuration of a non-aqueous electrolyte secondary battery.

FIG. 3 is a perspective view showing a configuration of a resin frame according to an embodiment of the present invention.

FIGS. 4A and 4B are a front view and a side view showing a configuration of a side plate according to an embodiment of the present invention. FIGS.

[Explanation of symbols]

1 Nonaqueous electrolyte secondary battery 2 Resin frame 2g Lid cover locking part 3 Side plate 4 Through bolt 5 Lid cover

Continued front page    (72) Inventor Tetsuzo Kojima             Kyoto, Kyoto             No. 1 Japan Battery Co., Ltd. (72) Inventor Kazuyoshi Chinaga             Kyoto, Kyoto             No. 1 Japan Battery Co., Ltd. (72) Inventor Hideki Masuda             Kyoto, Kyoto             No. 1 Japan Battery Co., Ltd. F-term (reference) 5H040 AA20 AY08 CC02 CC20 DD07

Claims (1)

[Claims] 1. An assembled battery in which one or more modules having a battery frame surrounded by a frame body are arranged in the front-rear direction, and each frame body is sandwiched and fixed from both front and rear sides of the modules by sandwiching and fixing means. A lid cover locking portion is provided on the left and right of the upper end of the frame, and a side edge portion in the left and right direction can be engaged with the lid cover locking portion on the upper end of these frames and can be slid in the front-rear direction. An assembled battery, wherein the lid cover is arranged.