JP2006302715A - Battery module assembly, manufacturing method of battery module assembly, and manufacturing device of battery module assembly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery module assembly reducing man-hour, a manufacturing method of the battery module assembly, and a manufacturing device of the battery module assembly. <P>SOLUTION: One battery module 2 is formed by penetrating a through bolt 26 for holding a premolding 2a into one of premolding 2a and by applying winding tightening process. Another premolding 2a is mounted on the one battery module 2, and the through bolt 26 penetrated in the one battery module 2 is penetrated into the other premolding 2a, and the other premolding 2a penetrated with the through bolt 26 is applied with winding tightening process to make the other battery module 2. The other premolding 2a is further mounted in order on the battery module 2 that is applied with winding tightening process, and is applied with winding tightening process, thereby a battery module assembly 3 connected by a common through bolt 26 is manufactured. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a battery module assembly, a battery module assembly manufacturing method, and a battery module assembly manufacturing apparatus, and in particular, a battery module assembly using a winding process, a method of manufacturing a battery module assembly, and a battery. The present invention relates to a module assembly manufacturing apparatus.

  A high output and high capacity assembled battery is made by electrically connecting a plurality of single cells in series and / or in parallel. In order to facilitate manufacture of an assembled battery, generally, a battery module in which a plurality of single cells are housed in a case is used as a unit unit for assembly. In the battery module, a plurality of single cells are electrically connected within the case, and positive and negative output terminals are led out from the case. Then, an assembled battery is manufactured by electrically connecting a number of battery modules corresponding to the required output and capacity in series and / or in parallel.

  As a case of this battery module, there is a conventional method using a can, and after the contents such as single cells are stored in the can, the can lid is put on, and the can and the can lid are fastened by a winding mechanism (for example, Patent Documents) 1). When winding, it is necessary to hold the can, single cell, can lid, etc., so a hole is provided in the can and can lid, and the locating pin of the fixing jig having the locating pin is passed through this hole. The battery module is held and tightened.

The battery module is a type of assembled battery in that it includes a plurality of electrically connected single cells, but in this specification, a unit unit for assembling an “assembled battery” A unit in which a single cell is housed in a case is referred to as a “battery module”.
JP-A-5-123797

  However, in the method of holding the battery module with the locating pin of the fixing jig as described above, the locating pin and the battery module interfere with each other due to the deformation of the battery can and the can lid that occur during the tightening process, and the locating pin from the created battery module Is difficult to extract.

  The present invention was made in order to solve the problems associated with the above-described prior art, reduces the number of steps for pulling out the locating pin, and can reduce the number of man-hours, a method for manufacturing the battery module assembly, It is another object of the present invention to provide a battery module assembly manufacturing apparatus.

  A method for manufacturing a battery module assembly according to the present invention that achieves the above object is to produce a preform by covering a battery can containing a plurality of single cells therein with a can lid, and the battery can of the preform and A battery module assembly manufacturing method for manufacturing a battery module assembly by stacking a plurality of battery modules manufactured by fastening can lids by a winding process, and for holding the preform Inserting another through-molded body into one battery module produced by inserting a through-bolt through the one preformed body and performing a winding process; and inserting into the one battery module An insertion step of inserting the through bolt into the other preform, a winding step of producing another battery module by performing a winding process of the other preform through which the through bolt is inserted, and Have and tighten Perform tightening processed sequentially further placing another preform in Engineering by the battery module, characterized in that to produce a battery module assembly linked by a common through-bolt.

  An apparatus for manufacturing a battery module assembly according to the present invention that achieves the above object is to prepare a preform by covering a battery can containing a plurality of single cells therein with a can lid, and the battery can of the preform and A battery module assembly manufacturing apparatus for manufacturing a battery module assembly by stacking a plurality of battery modules manufactured by fastening can lids by a winding process for holding the preform A holding table on which the holding member is mounted, which can be moved up and down, a bolt supply mechanism capable of feeding an arbitrary amount of through bolts inserted through the preformed body, and the holding member of the mounting table described above are mounted. And a winding tightening mechanism provided to wind the battery can and can lid of the preformed body.

  The battery module assembly according to the present invention that achieves the above object includes a plurality of stacked battery modules, each of which has a can lid fastened by a winding process to a battery can in which a plurality of single cells are housed. A through bolt that penetrates all of the battery modules to be stacked, and one through which the through bolt of the stacked battery module protrudes, is slidable with the through bolt, and is fixedly connected to the through bolt. And a nut that is screwed with the through-bolt on the other side of the battery module to be stacked on which the through-bolt protrudes.

  According to the method for manufacturing a battery module assembly according to the present invention configured as described above, a through bolt inserted into one manufactured battery module is inserted into another preform and subjected to a winding process. Therefore, a plurality of battery modules can be produced using a common through bolt. Therefore, it is not necessary to provide a jig for holding the preform for each battery module to be manufactured, and the number of man-hours can be reduced.

  According to the battery module assembly manufacturing apparatus according to the present invention configured as described above, a through bolt inserted into one manufactured battery module is inserted into another preform by a bolt supply mechanism. Since the winding process can be performed, a plurality of battery modules can be manufactured using a common through bolt. Therefore, it is not necessary to provide a jig for holding the preformed body for each battery module to be manufactured, and the number of steps can be reduced.

  According to the battery module assembly according to the present invention configured as described above, since the battery module assembly is formed using a common through-bolt, the preformed body is held for each battery module during production. It is not necessary to provide a jig, and man-hours can be reduced.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an assembled battery according to this embodiment, FIG. 2 is an exploded perspective view showing a battery module of this embodiment, and FIG. 3 is an exploded sectional view showing the battery module of this embodiment.

  An assembled battery 1 shown in FIG. 1 is an in-vehicle battery mounted on a vehicle such as an automobile or a train, and is formed by arranging a plurality of battery module assemblies 3 in which a plurality of battery modules 2 are stacked.

  As shown in FIGS. 2 and 3, in the battery module 2, a plurality of cells 21 electrically connected in series are accommodated in a box-shaped battery can 22, and a can lid 23 is wound around the battery can 22. It is formed by fastening. A flat lithium ion secondary battery, a nickel-hydrogen battery, a nickel-cadmium battery, or the like is applied to the unit cell 21.

  The battery can 22 has a box shape in which an opening 22a is provided at the upper end, and an overhanging portion 22b that opens outward is formed in the opening 22a. The can lid 23 is formed with a lid portion 23 a that fits into the opening 22 a to a predetermined depth and a peripheral end portion 23 b that contacts the overhang portion 22 b of the battery can 22. Can-side holes 22c are provided at the four corners of the lower surface of the battery can 22, and the lid-side holes 23c are provided at the can lid 23 so as to face the can-side holes 22c of the battery can 22. A sleeve 24 is provided between the can side hole 22c of the battery can 22 and the lid side hole 23c of the can lid 23, and the can side hole 22c, the sleeve 24, and the lid side hole 23c communicate with each other. 25 is formed.

  The manufacturing apparatus 4 of the battery module assembly 3 according to the present embodiment will be described.

  4 is a cross-sectional view showing a battery module assembly manufacturing apparatus according to the present embodiment, FIG. 5 is a cross-sectional view showing a bolt supply mechanism of the battery module assembly manufacturing apparatus according to the present embodiment, and FIG. FIG. 7 is a plan view of a winding jig along the line VI-VI, FIG. 7 is a view showing a transport mechanism of the battery module assembly manufacturing apparatus according to this embodiment, (A) is a side view, and (B) is an upper surface. FIG.

  The battery module assembly manufacturing apparatus 4 stores a storage object such as a unit cell 21 and a sleeve 24 in a battery can 22, and covers the battery can 22 with a can lid 23 before preforming. This is an apparatus for producing a battery module assembly 3 by using a plurality of bodies 2a.

  As shown in FIG. 4, the battery module assembly manufacturing apparatus 4 includes a mounting table 5, a bolt supply mechanism 6, a winding mechanism 7, and a transport mechanism 8.

  The mounting table 5 includes a mounting surface 51 on which the preformed body 2 a is mounted, and the lower end is connected to the lifting mechanism 9. At the four corners of the mounting table 5, through-holes 52 penetrating vertically are provided corresponding to the through-holes 25 of the preformed body 2 a to be placed.

  The elevating mechanism 9 includes two guide rods 91 that are fixed to the manufacturing apparatus main body and extend in the vertical direction, and a cylindrical LM guide 92 that can be fitted and slid on the guide rods 91. The LM guide 92 is fixed to the mounting table 5. The elevating mechanism 9 includes a mounting table servo motor 93 fixed to the manufacturing apparatus main body and a mounting table ball screw 94 operated by the mounting table servo motor 93. The mounting table ball screw 94 passes through the mounting table rotating member 94a that is rotated by the mounting table servo motor 93 via the timing belt 95, and the mounting table rotating member 94a. The mounting table rotating member 94a rotates. Thus, the mounting table screw shaft 94 b is moved up and down, and the upper end of the mounting table screw shaft 94 b is fixed to the lower portion of the mounting table 5. Thus, by rotating the mounting table servo motor 93, the mounting table screw shaft 94b moves up and down, and the mounting table 5 can be moved up and down.

  As shown in FIGS. 4 and 5, the bolt supply mechanism 6 includes a bolt fixing portion 61 that fixes the through bolt 26 and a bolt lifting portion 62 that moves the bolt fixing portion 61 forward and backward. . The bolt fixing portion 61 includes a sliding member 64 that is slidably fitted to a guide rail 63 that is fixed to the manufacturing apparatus main body, and a chucking 65 that fixes the through bolt 26. The bolt fixing portion 61 is formed with a connecting frame 66 extending in the horizontal direction, and a bracket 66 a is formed at the end of the connecting frame 66.

  The bolt lifting unit 62 includes a bolt lifting servo motor 67 installed on a frame fixed to the manufacturing apparatus main body, and a bolt lifting ball screw 68 operated by the bolt lifting servo motor 67. The bolt lifting ball screw 68 passes through the bolt lifting rotary member 68a rotated by the bolt lifting servo motor 67 via the bolt lifting timing belt 69, and the bolt lifting rotary member 68a. And a bolt lifting screw shaft 68b that moves up and down by rotating 68a. The upper end of the bolt lifting screw shaft 68b is fitted and fixed to the bracket 66a of the bolt fixing portion 61. ing. The chucking 65 can sandwich and hold the outer peripheral portion of the end of the through bolt 26.

  By rotating the bolt lifting / lowering servomotor 67 with such a bolt supply mechanism 6, the bolt lifting / lowering screw shaft 68 b moves up and down, and the through bolt 26 can be moved up and down.

  Four bolt supply mechanisms 6 are provided corresponding to the through holes 51 of the mounting table 5, but a bolt lifting part 62 that lifts and lowers the bolt fixing part 61 is one bolt lifting part with respect to the two bolt fixing parts 61. One bolt lifting / lowering portion 62 may be provided for the portion 62 or the four bolt fixing portions 61.

  A winding jig 10 is provided on the upper part of the manufacturing apparatus main body so as to face the upper surface of the mounting table 5. As shown in FIG. 6, the winding jig 10 is formed with a holding portion 101 having a shape corresponding to the edge portion of the lid portion 23 a of the can lid 23 of the preform 2 a placed on the mounting table 5. .

  The winding mechanism 7 has a winding roller 71 that can be moved close to and away from the side surface of the holding unit 101, and rotates along the upper end of the preform 2 a by a cam mechanism or the like while the winding roller 71 rotates. It is possible to go around the preform 2a. As a result, the object sandwiched between the holding unit 101 and the winding roller 71 is wound.

  The transport mechanism 8 is a mechanism for carrying the preform 2a onto the mounting table 5, and has two fingers 81 as shown in FIG. The two fingers 81 can be moved back and forth on the mounting table 5 from the lateral direction, and an air cylinder 82 is provided at the base of the finger 81, and the two fingers 81 are moved closer to and away from each other by the air cylinder 82. And can be opened and closed. Further, the transport mechanism 8 has an elevating member 84 that can be moved up and down by an elevating device 83. The elevating member 84 is provided with four holding pins 85 corresponding to the through holes 25.

  Next, a manufacturing method will be described.

  FIG. 8 is a cross-sectional view of the manufacturing apparatus showing a state before the preformed body of the present embodiment is carried into the manufacturing apparatus, FIG. 9 is a view showing the holding member, (A) is a side view, and (B) is an upper surface. FIG.

  First, as shown in FIG. 8, the preform 2 a is installed in the vicinity of the manufacturing apparatus 4. A plate-shaped holding member 27 is installed on the mounting table 5. As shown in FIG. 9, the holding member 27 is provided with a jig through hole 27a corresponding to the through hole 52 of the mounting table 5, and the positions of the through hole 52 and the jig through hole 27a coincide. As described above, the holding member 27 is installed on the mounting table 5. Further, a screw hole 27b passes through the jig through hole 27a from the side surface of the holding member 27, and a fixing bolt 29 can be fastened to the screw hole 27b.

  Next, using the transport mechanism 8, a placement process for placing the preform 2 a on the holding member 27 is performed.

  10A and 10B are diagrams showing a state before the preformed body is held by the transport mechanism of the present embodiment. FIG. 10A is a top view, FIG. 10B is a side view, and FIG. 11 is a preliminary view by fingers of the transport mechanism of the present embodiment. It is a figure which shows the time of hold | maintaining a molded object, (A) is a side view, (B) is a top view, FIG. 12 shows the time of hold | maintaining a preform by the finger and holding pin of the conveyance mechanism of this embodiment. It is a figure, (A) is a side view, (B) is a top view, FIG. 13 is sectional drawing of the manufacturing apparatus which shows the state which carried in the manufacturing apparatus the preforming body of this embodiment.

  First, as shown in FIG. 10, the fingers 81 of the transport mechanism 8 in a state of being separated from the preform 2a are opened. Next, as shown in FIG. 11, the transport mechanism 8 is moved in the direction of the preform 2 a, and the finger 81 is inserted below the overhang portion 22 b of the battery can 22. Thereafter, the preform 81 is sandwiched by the fingers 81 by closing the fingers 81. Furthermore, as shown in FIG. 12, the holding pin 85 is lowered and the holding pin 85 is inserted through the through hole 25 of the preform 2a. Thereafter, the transport mechanism 8 is moved in the direction of the mounting table, and the preform 2a is placed on the holding member 27 on the mounting table 5, as shown in FIG. At this time, since the finger 81 is hooked under the projecting portion 22b of the battery can 22 and is held by the holding pin 85, the battery can 22 can be prevented from dropping during movement. Thereafter, the fingers 81 are opened, the holding pins 85 are raised, and only the transport mechanism 8 is separated from the mounting table 5 leaving the preform 2a on the holding member 27. In the preform 2a left on the holding member 27, the through hole 25 coincides with the through hole 51 and the jig through hole 27a.

  Next, an insertion process of inserting a bolt through the preform 2a is performed.

  FIG. 14 is a cross-sectional view of the manufacturing apparatus showing a state where the mounting table of the present embodiment is raised, and FIG. 15 is a cross-sectional view of the manufacturing apparatus showing a state where a through bolt is inserted into the preformed body of the present embodiment.

  First, as shown in FIG. 14, the mounting table 5 is raised by the lifting mechanism 9, and the lid portion 23 a of the can lid 23 of the preform 2 a is pressed against the holding portion 101 of the winding jig 10. Further, as shown in FIG. 15, the through bolt 26 is raised by the bolt supply mechanism 6, and the through bolt 26 passes through the through hole 51, the jig through hole 27 a and the through hole 25.

  Next, a winding process for winding the preform 2a is performed.

  FIG. 16 is a cross-sectional view of the manufacturing apparatus showing the state when performing the tightening process of the present embodiment, FIG. 17 is a cross-sectional view of the manufacturing apparatus showing the state after performing the tightening process of the present embodiment, and FIG. It is sectional drawing of the manufacturing apparatus which shows the state which dropped the mounting base after the winding process of this embodiment.

  First, as shown in FIG. 16, the winding mechanism 7 is brought close to the preform 2a, and the winding roller 71 is pressed against the overhanging portion 22b of the battery can 22 and the peripheral end portion 23b of the can lid 23. Next, while holding the protruding portion 22b by the holding portion 101, the winding roller 71 is rotated one or more times around the preform 2a, so that the protruding portion 22b of the battery can 22 and the peripheral end of the can lid 23 are rotated. The part 23b is fastened by winding and the first-stage battery module 2 is manufactured.

  When the winding process is completed, the winding mechanism 7 is moved away from the battery module 2 as shown in FIG. 17, and the mounting table 5 is lowered by the lifting mechanism 9 as shown in FIG. When the mounting table 5 is lowered, the through bolt 26 is also lowered by the bolt supply mechanism 6 so that the protruding amount of the tip of the through bolt 26 from the battery module 2 does not change.

  When the production of the first-stage battery module 2 is completed, an operation of stacking the second-stage battery module 2 on the first-stage battery module 2 is performed.

  FIG. 19 is a cross-sectional view of the manufacturing apparatus showing a state in which the second stage preform is carried into the manufacturing apparatus, and FIG. 20 is a state in which a through bolt is inserted into the second stage preform in the present embodiment. FIG. 21 is a cross-sectional view of the manufacturing apparatus showing the state when the second stage preformed body of the present embodiment is wound and FIG. 22 is a second stage of the present embodiment. It is sectional drawing of the manufacturing apparatus which shows the state which dropped the mounting base after the winding process of a preforming body.

  First, as shown in FIG. 19, a mounting step is performed in which the second-stage preform 2a is mounted on the battery module 2 in the previous stage by the transport mechanism 8 described above. The operation of the transport mechanism 8 at this time is the same as the operation of the first stage except that the preform 2a is placed on the battery module 2 in the previous stage, not on the holding member 27.

  Next, as shown in FIG. 20, the mounting table 5 is raised by the elevating mechanism 9, and the lid portion 23 a of the can lid 23 of the preform 2 a is pressed against the holding portion 101 of the winding jig 10. Furthermore, the through bolt 26 inserted into the battery module 2 in the previous stage is lifted by the bolt supply mechanism 6 and the through bolt 26 is passed through the through hole 25 of the preform 2a to perform the insertion process.

  Next, as shown in FIG. 21, the winding tightening mechanism 7 is brought close to the preformed body 2a, and the winding process of the preformed body 2a is performed as in the first stage.

  When the winding process is completed, as shown in FIG. 22, the winding mechanism 7 is separated from the battery module 2, and the mounting table 5 is lowered by the elevating mechanism 9. When the mounting table 5 is lowered, the through bolt 26 is also lowered by the bolt supply mechanism 6 so that the protruding amount of the tip of the through bolt 26 from the produced battery module 2 does not change.

  Further, the battery modules 2 in the third and subsequent stages are sequentially stacked in the same manner as in the manufacturing process of the second-stage battery module 2, and are stacked up to the final stage (the third stage in the present embodiment).

  FIG. 23 is a cross-sectional view of the battery module assembly according to the present embodiment.

  After the plurality of battery modules 2 are stacked up to the final stage, as shown in FIG. 23, the fixing bolt 29 is fastened to the screw hole 27 b of the holding member 27, and the through bolt 26 is fixed to the holding member 27. Further, a nut 26 a is fastened to the tip of the through bolt 26, and the through bolt 26 is removed from the chucking 65. Thereby, the battery module assembly 3 in which all the stacked battery modules 2 are held by the holding members 27 by the through bolts 26 is completed. Furthermore, the assembled battery 1 shown in FIG. 1 can be produced by arranging a plurality of battery module assemblies 3.

  According to the manufacturing method according to the present embodiment, the battery module assembly 3 can be produced by finally holding a plurality of battery modules 2 by using the through bolts 26 that hold the battery modules 2 at the time of winding. Thus, it is not necessary to pull out the locating pin inserted into the preformed body to hold the preformed body after the winding tightening process for each battery module, and interference between the locating pin and the battery module occurs when the locating pin is pulled out. Does not occur. In addition, since there is no process for pulling out the locate pin as in the prior art, man-hours can be reduced.

  Further, in the conventional method, since each battery module is separately manufactured, it is difficult to position the battery modules so that a plurality of battery modules are stacked and integrated with a through bolt. Since the battery module 2 is produced by sequentially inserting the through bolts 26 into the preform 2a, the battery module 2 can be easily positioned and the number of steps can be reduced.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims. For example, the number of stacked battery modules 2 may be any number as long as it is two or more. Further, the elevating mechanism 9 and the bolt supply mechanism 6 are not based on ball screws, but may be those using actuators, for example. In addition, by reducing the area of the mounting table 5, it is possible to prevent the through bolts 26 from moving forward and backward without providing the through holes 52.

It is a perspective view which shows the assembled battery which concerns on this embodiment. It is a disassembled perspective view which shows the battery module of this embodiment. It is an exploded sectional view showing the battery module of this embodiment. It is sectional drawing which shows the manufacturing apparatus of the battery module aggregate | assembly which concerns on this embodiment. It is sectional drawing which shows the volt | bolt supply mechanism of the manufacturing apparatus of the battery module assembly which concerns on this embodiment. It is a top view of the winding jig | tool along the VI-VI line of FIG. It is a figure which shows the conveyance mechanism of the manufacturing apparatus of the battery module assembly which concerns on this embodiment, (A) is a top view, (B) is a side view. It is sectional drawing of the manufacturing apparatus which shows the state before carrying in the preforming body of this embodiment to a manufacturing apparatus. It is a figure which shows a holding member, (A) is a side view, (B) is a top view. It is a figure which shows before hold | maintaining a preforming body with the conveyance mechanism of this embodiment, (A) is a side view, (B) is a top view. It is a figure which shows the time of hold | maintaining a preforming body with the finger of the conveyance mechanism of this embodiment, (A) is a side view, (B) is a top view. It is a figure which shows the time of holding a preform by the finger and holding pin of the conveyance mechanism of this embodiment, (A) is a side view, (B) is a top view. It is sectional drawing of the manufacturing apparatus which shows the state which carried in the preforming body of this embodiment in the manufacturing apparatus. It is sectional drawing of the manufacturing apparatus which shows the state which raised the mounting base of this embodiment. It is sectional drawing of the manufacturing apparatus which shows the state which inserted the through bolt in the preforming body of this embodiment. It is sectional drawing of the manufacturing apparatus which shows the state at the time of performing the winding process of this embodiment. It is sectional drawing of the manufacturing apparatus which shows the state after performing the winding process of this embodiment. It is sectional drawing of the manufacturing apparatus which shows the state which dropped the mounting base after the winding process of this embodiment. It is sectional drawing of the manufacturing apparatus which shows the state which carried in to the manufacturing apparatus the 2nd stage preforming body of this embodiment. It is sectional drawing of the manufacturing apparatus which shows the state which inserted the through volt | bolt in the 2nd stage preform body of this embodiment. It is sectional drawing of the manufacturing apparatus which shows the state at the time of performing the winding process of the 2nd stage preforming body of this embodiment. It is sectional drawing of the manufacturing apparatus which shows the state which lowered | hung the mounting base after the winding process of the 2nd step | paragraph preform body of this embodiment. It is sectional drawing of the battery module aggregate | assembly which concerns on this embodiment.

Explanation of symbols

1 battery pack,
2 battery modules,
2a preform,
3 battery module assembly,
4 Production equipment,
5 mounting table,
6 bolt supply mechanism,
7 Tightening mechanism,
8 transport mechanism,
9 Lifting mechanism,
10 Winding jig,
21 cell,
22 battery cans,
23 Can lid,
25 through holes,
26 through bolts,
26a nut,
27 Holding member.

Claims (5)

A plurality of battery modules are produced by covering a battery can containing a plurality of single cells inside with a can lid and preparing a preform, and fastening the battery can and the can lid of the preform by fastening. A battery module assembly manufacturing method for stacking to produce a battery module assembly,
A placing step of placing another preformed body on one battery module produced by inserting a through-bolt for holding the preformed body into one preformed body and performing a winding process; ,
An insertion step of inserting a through bolt inserted through the one battery module into the other preform,
A winding process for producing another battery module by performing a winding process on the other preformed body through which the through bolt is inserted, and
A battery module assembly characterized in that a battery module assembly connected by common through bolts is manufactured by further placing another preformed body on the battery module that has been subjected to the tightening process, and performing a tightening process. Manufacturing method.   The through bolt inserted into the battery module manufactured by the winding process slides inside the through hole through which the through bolt of the battery module is inserted, and is placed on the battery module. The battery module assembly manufacturing method according to claim 1, wherein the battery module assembly is inserted into another preform.   The through bolt penetrates the plate-shaped holding member, and is sequentially inserted into the plurality of preforms. After all the battery modules constituting the battery module assembly are stacked, the through bolt and the holding member are stacked. The battery module assembly manufacturing method according to claim 1, wherein the battery modules are fixed to each other. A plurality of battery modules are produced by covering a battery can containing a plurality of single cells inside with a can lid and preparing a preform, and fastening the battery can and the can lid of the preform by fastening. A battery module assembly manufacturing apparatus for producing a battery module assembly by stacking,
A holding table on which a holding member for holding the preform is placed and can be moved up and down;
A bolt supply mechanism capable of feeding an arbitrary amount of through bolts inserted through the preform;
A winding jig provided to face a surface on which the holding member of the mounting table is placed;
A battery module assembly manufacturing apparatus comprising: a battery can of the preform and a winding mechanism for winding the can lid. A plurality of stacked battery modules, in which a can lid is fastened by a winding process to a battery can in which a plurality of single cells are stored;
Through bolts that penetrate all of the battery modules to be stacked;
A holding member that is disposed on one side from which the through bolt of the battery module to be stacked protrudes, is slidable with the through bolt, and can be fixedly connected to the through bolt;
A battery module assembly comprising: a nut that is screwed with a through bolt on the other side of the battery module to be stacked on which the through bolt protrudes.

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