JP7059837B2 - Power storage module manufacturing method and supply device - Google Patents

Description

The present invention relates to a method for manufacturing a power storage module and a supply device.

As a conventional power storage module, a bipolar battery having a bipolar electrode having a positive electrode formed on one surface of an electrode plate and a negative electrode formed on the other surface is known (see Patent Document 1). The bipolar battery includes a laminate formed by laminating a plurality of bipolar electrodes via a separator. The laminated body is provided with an insulating frame for sealing, and the edge portion of the electrode plate is held on the side surface formed by the laminated body of the bipolar electrodes.

Japanese Unexamined Patent Publication No. 2011-151016

The method for manufacturing a power storage module as described above may include a step of injecting an electrolytic solution into the internal space between the bipolar electrodes in the frame, and a step of inspecting the airtightness of the internal space. In these steps, in order to prevent leakage of the electrolytic solution or gas, for example, a liquid injection or an airtightness inspection is performed with a rubber packing pressed against the liquid injection port. In order to maintain the state in which the rubber packing is pressed, tightening work with bolts or the like may occur, and the manufacturing efficiency may decrease.

An object of the present invention is to provide a method for manufacturing a power storage module and a supply device capable of improving the manufacturing efficiency.

The method for manufacturing a power storage module according to one aspect of the present invention is an electrode laminate in which a plurality of bipolar electrodes are laminated, and two bipolar electrodes that are arranged so as to surround the electrode laminate and are adjacent to each other among the plurality of bipolar electrodes. A step of manufacturing a battery structure having a seal portion provided with a communication hole for communicating with an internal space formed between electrodes, a step of mounting the battery structure on a supply device, and electrolysis by the supply device. It comprises a step of supplying a liquid or a gas to an internal space. The supply device includes a supply pipe for supplying the electrolytic solution or gas, and a mounting portion for mounting the battery structure. The mounting portion includes a mounting table and a sealing member provided on the upper surface of the mounting table. The mounting portion is provided with a through hole that penetrates the mounting table and the sealing member and communicates with the supply pipe. In the mounting process, the battery structure is mounted on the mounting portion with the surface provided with the communication hole of the seal portion facing the seal member so that the internal space and the through hole communicate with each other through the communication hole. do.

In this method of manufacturing a power storage module, the internal space of the battery structure and the through hole penetrating the mounting portion of the supply device are communicated with each other through the communication hole provided in the seal portion of the battery structure. The battery structure is mounted on the mounting portion of the supply device so that the surface provided with the communication hole of the sealing portion faces the sealing member. Due to the weight of the battery structure, the surface of the seal portion provided with the communication hole is pressed against the seal member. This makes it possible to hold the supply device and the seal portion in close contact with each other without using a bolt, a robot, or the like. As a result, it becomes possible to improve the manufacturing efficiency of the power storage module.

The method for manufacturing the power storage module may further include a step of restraining the electrode laminate with a restraint member along the stacking direction of the plurality of bipolar electrodes. In the mounting step, the battery structure in which the electrode laminate is restrained by the restraining member may be mounted on the mounting portion. In this case, not only the weight of the battery structure but also the weight of the restraining member presses the surface provided with the communication hole of the sealing portion against the sealing member. Therefore, the space between the supply device and the seal portion can be further closely held.

The feeder may further include a pair of defining members that define the mounting position of the battery structure in the mounting section. In the mounting step, the battery structure may be mounted at the mounting position by inserting the battery structure between a pair of specified members. In this case, since the battery structure is mounted at the mounting position only by inserting the battery structure between the pair of specified members, the mounting work of the battery structure can be simplified.

The supply device according to another aspect of the present invention is an electrode laminate in which a plurality of bipolar electrodes are laminated, and two bipolar electrodes that are arranged so as to surround the electrode laminate and are adjacent to each other among the plurality of bipolar electrodes. It is a device for supplying an electrolytic solution or gas to a battery structure having a sealing portion provided with a communication hole communicating with the internal space formed between them. The supply device includes a supply pipe for supplying an electrolytic solution or gas, a mounting portion for mounting the battery structure, and a pair of defining members that define the mounting position of the battery structure in the mounting portion. To prepare for. The mounting portion includes a mounting table and a sealing member provided on the upper surface of the mounting table. The mounting portion is provided with a through hole that penetrates the mounting table and the sealing member and communicates with the supply pipe. In the pair of defining members, when the battery structure is placed on the mounting portion with the surface provided with the communication hole of the seal portion facing the seal member, the internal space and the through hole pass through the communication hole. Specify the placement position so that it communicates.

In this supply device, the battery structure is such that the internal space of the battery structure and the through hole penetrating the mounting portion of the supply device communicate with each other through the communication hole provided in the seal portion of the battery structure. The placement position of is specified. Therefore, when the battery structure is mounted on the mounting portion of the supply device with the surface provided with the communication hole of the seal portion facing the seal member, the communication hole of the seal portion depends on the weight of the battery structure. Is pressed against the sealing member. This makes it possible to hold the supply device and the seal portion in close contact with each other without using a bolt, a robot, or the like. As a result, it becomes possible to improve the manufacturing efficiency of the power storage module.

According to the present invention, the manufacturing efficiency of the power storage module can be improved.

FIG. 1 is a schematic cross-sectional view showing a power storage device including a bipolar battery manufactured by the method for manufacturing a power storage module according to an embodiment. FIG. 2 is a schematic cross-sectional view showing the internal configuration of the power storage module shown in FIG. FIG. 3 is a process diagram showing a main process of the method for manufacturing the power storage module shown in FIG. FIG. 4 is a cross-sectional view showing a state in which an electrolytic solution is injected into the internal space of the battery structure using the liquid injection device according to the embodiment. FIG. 5 is a cross-sectional view showing how the gas is supplied to the internal space of the battery structure by using the airtightness inspection device according to the embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same reference numerals are used for the same or equivalent elements, and duplicate description is omitted.

FIG. 1 is a schematic cross-sectional view showing a power storage device including a bipolar battery manufactured by the method for manufacturing a bipolar battery according to an embodiment of the present invention. In FIG. 1, the power storage device 1 is used as a battery for a vehicle such as a forklift, a hybrid vehicle, or an electric vehicle. The power storage device 1 includes a bipolar battery 2 as a plurality of (three in this embodiment) power storage modules. The bipolar battery 2 is, for example, a nickel hydrogen secondary battery.

The plurality of bipolar batteries 2 are laminated via a metal conductive plate 3. The conductive plate 3 is also arranged on the outside of the bipolar battery 2 located at both ends in the stacking direction (Z-axis direction). The bipolar battery 2 and the conductive plate 3 have, for example, a rectangular shape (rectangular shape in a plan view) when viewed from the stacking direction (Z-axis direction). The conductive plate 3 is electrically connected to the adjacent bipolar battery 2. As a result, a plurality of bipolar batteries 2 are connected in series in the stacking direction. The bipolar battery 2 will be described in detail later.

A positive electrode terminal 4 is connected to a conductive plate 3 located at one end (lower end in this embodiment) in the stacking direction. The negative electrode terminal 5 is connected to the conductive plate 3 located at the other end (upper end in this embodiment) in the stacking direction. The positive electrode terminal 4 and the negative electrode terminal 5 extend in a direction perpendicular to the stacking direction (X-axis direction). By providing such a positive electrode terminal 4 and a negative electrode terminal 5, it is possible to charge and discharge the power storage device 1.

The conductive plate 3 can also function as a heat sink for releasing the heat generated in the bipolar battery 2. The conductive plate 3 is provided with a plurality of voids 3a extending in a direction (Y-axis direction) perpendicular to the stacking direction of the bipolar battery 2 and the extending direction of the positive electrode terminal 4 and the negative electrode terminal 5. By allowing a refrigerant such as air to pass through these voids 3a, the heat from the bipolar battery 2 can be efficiently released to the outside.

Further, the power storage device 1 includes a restraint unit 6 that restrains the bipolar battery 2 and the conductive plate 3 in the stacking direction. The restraint unit 6 has a pair of restraint plates 7 that sandwich the bipolar battery 2 and the conductive plate 3 in the stacking direction, and a plurality of sets of bolts 8 and nuts 9 that fasten the restraint plates 7 to each other.

The restraint plate 7 is made of a metal such as iron. An insulating film 10 such as a resin film is arranged between each restraint plate 7 and the conductive plate 3. The restraint plate 7 and the insulating film 10 have, for example, a rectangular shape in a plan view. The restraint plate 7 is larger than the bipolar battery 2, the conductive plate 3, and the insulating film 10 when viewed from the stacking direction.

A plurality of insertion holes 7a through which the shaft portion 8a of the bolt 8 is inserted are provided at the edge portion of the restraint plate 7. With the shaft portion 8a of the bolt 8 inserted through the insertion hole 7a of each restraint plate 7, the nut 9 is screwed into the tip portion of the shaft portion 8a, so that the bipolar battery 2, the conductive plate 3, and the insulating film 10 are 1 It is sandwiched between a pair of restraint plates 7. As a result, a restraining load in the stacking direction is applied to the bipolar battery 2, the conductive plate 3, and the insulating film 10.

FIG. 2 is a schematic cross-sectional view showing the internal configuration of the power storage module shown in FIG. In FIG. 2, the bipolar battery 2 has a structure (plural cell structure) in which a plurality of cells (for example, 24 cells) are laminated. The bipolar battery 2 includes an electrode laminate 13 in which a plurality of bipolar electrodes 11 are laminated via a separator 12, and a frame 14 surrounding the electrode laminate 13.

The bipolar electrode 11 and the separator 12 have, for example, a rectangular shape in a plan view. The separator 12 is arranged between the bipolar electrodes 11 adjacent to each other in the stacking direction. The bipolar electrode 11 is an example of a current collector plate (conductive plate or metal plate), a nickel foil 15, a positive electrode 16 formed on the upper surface 15a of the nickel foil 15, and a negative electrode formed on the lower surface 15b of the nickel foil 15. It has 17.

The positive electrode 16 of the bipolar electrode 11 faces the negative electrode 17 of one of the bipolar electrodes 11 adjacent to each other in the stacking direction with the separator 12 interposed therebetween. The negative electrode 17 of the bipolar electrode 11 faces the positive electrode 16 of the other bipolar electrode 11 adjacent to each other in the stacking direction with the separator 12 interposed therebetween.

A positive electrode side terminal electrode 18 is arranged on the lowermost layer of the electrode laminate 13. The positive electrode side terminal electrode 18 has a nickel foil 15 and a positive electrode 16 formed on the upper surface 15a of the nickel foil 15. A negative electrode side terminal electrode 19 is arranged on the uppermost layer of the electrode laminate 13. The negative electrode side terminal electrode 19 has a nickel foil 15 and a negative electrode 17 formed on the lower surface 15b of the nickel foil 15. The positive electrode 16 of the positive electrode side terminal electrode 18 faces the negative electrode 17 of the lowermost bipolar electrode 11 with the separator 12 interposed therebetween. The negative electrode 17 of the negative electrode side terminal electrode 19 faces the positive electrode 16 of the uppermost bipolar electrode 11 with the separator 12 interposed therebetween. The nickel foil 15 of the positive electrode side terminal electrode 18 and the negative electrode side terminal electrode 19 is electrically connected to the conductive plates 3 (see FIG. 1) adjacent to each other in the stacking direction.

The positive electrode 16 is formed by applying a positive electrode active material to the upper surface 15a of the nickel foil 15. As the positive electrode active material, for example, nickel hydroxide coated with a cobalt (Co) oxide is used. The negative electrode 17 is formed by applying a negative electrode active material to the lower surface 15b of the nickel foil 15. As the negative electrode active material, for example, a hydrogen storage alloy is used. The peripheral portion 15c of the nickel foil 15 is an uncoated region in which the positive electrode active material and the negative electrode active material are not coated.

The separator 12 is arranged between the positive electrode 16 and the negative electrode 17, and separates the positive electrode 16 and the negative electrode 17. The separator 12 is smaller than the nickel foil 15 and larger than the positive electrode 16 and the negative electrode 17 when viewed from the stacking direction. The separator 12 is formed, for example, in the form of a sheet. The separator 12 is formed of a porous film made of a polyolefin resin such as polyethylene (PE) or polypropylene (PP). The separator 12 may be made of a non-woven fabric or woven fabric made of PE, PP, polyethylene terephthalate (PET), methyl cellulose or the like. The separator 12 may be reinforced with a vinylidene fluoride resin compound or the like. The shape of the separator 12 is not particularly limited to a sheet shape, but may be a bag shape.

The frame body 14 is arranged so as to surround the electrode laminate 13, a plurality of primary seal portions 20 that each hold the peripheral edge portions 15c of each nickel foil 15, and secondary seal portions 20 arranged around these primary seal portions 20. It has a seal portion 21.

Each primary seal portion 20 is arranged for each nickel foil 15 along the stacking direction. The primary seal portion 20 is formed in a frame shape. The primary sealing portion 20 is bonded to the peripheral edge portion 15c of the nickel foil 15 by heat welding. A communication hole 20a for injecting an electrolytic solution is provided on the side surface 20b of the primary seal portion 20 (see FIG. 4). After the electrolytic solution is injected, the communication hole 20a is closed by, for example, a pressure regulating valve or the like.

An internal space V defined by the nickel foil 15, the positive electrode 16, the negative electrode 17, and the primary sealing portion 20 is provided between the nickel foils 15 adjacent to each other in the stacking direction. That is, the internal space V is formed between the two bipolar electrodes 11 adjacent to each other in the stacking direction among the plurality of bipolar electrodes 11. The internal space V is formed liquid-tightly. An alkaline electrolytic solution is injected into the internal space V including the inside of the separator 12. As the alkaline electrolytic solution, for example, an alkaline solution containing an aqueous solution of potassium hydroxide or the like is used. The primary seal portion 20 seals the internal space V.

The secondary seal portion 21 has a square tubular shape. The secondary seal portion 21 surrounds each primary seal portion 20 and further seals the internal space V. The secondary seal portion 21 is welded to each primary seal portion 20.

The primary seal portion 20 and the secondary seal portion 21 are made of a resin such as polypropylene (PP), polyphenylene sulfide (PPS), or modified polyphenylene ether (modified PPE).

Subsequently, a method for manufacturing the bipolar battery 2 will be described. FIG. 3 is a process diagram showing a main process of the method for manufacturing the power storage module shown in FIG. FIG. 4 is a cross-sectional view showing a state in which an electrolytic solution is injected into the internal space of the battery structure using the liquid injection device according to the embodiment.

The bipolar battery 2 is manufactured, for example, by using the liquid injection device 50 (supply device) shown in FIG. Here, the configuration of the liquid injection device 50 will be described. The liquid injection device 50 is a device for injecting (supplying) the electrolytic solution F into the battery structure 23 described later. The liquid injection device 50 includes a supply unit 51, a mounting unit 52, and a pair of defining members 53.

The supply unit 51 supplies the electrolytic solution F to the internal space V through the communication hole 20a. The supply unit 51 includes a supply pipe 54 and a syringe 55. In the present embodiment, the supply unit 51 has a supply pipe 54 and a syringe 55 for each internal space V. The tip of each supply pipe 54 is connected to the mounting portion 52. The rear end of each supply pipe 54 is connected to a syringe 55 corresponding to the supply pipe 54.

The mounting portion 52 is a portion for mounting the battery structure 23. The mounting portion 52 includes a mounting table 56 and a sealing member 57. A seal member 57 is provided on the upper surface 56a of the mounting table 56. The seal member 57 is, for example, a rubber packing. The mounting portion 52 is provided with a through hole 52h that penetrates the mounting table 56 and the seal member 57 for each internal space V. In the present embodiment, the mounting table 56 is provided with a through hole 56h that penetrates the mounting table 56 in the vertical direction, and the seal member 57 is provided with a through hole 57h that penetrates the seal member 57 in the vertical direction. .. The seal member 57 is arranged on the upper surface 56a of the mounting table 56 so that the through hole 56h and the through hole 57h overlap each other and communicate with each other.

The pair of defining members 53 are members that define the mounting position of the battery structure 23 in the mounting portion 52. The pair of defining members 53 has an internal space V and a through hole 52h (through hole 57h) when the battery structure 23 is placed on the mounting portion 52 with the side surface 20b of the primary seal portion 20 facing the seal member 57. ) And communicate with each other through the communication hole 20a. Each of the pair of defined members 53 is a plate-shaped member. The pair of defining members 53 are arranged apart from each other so as to sandwich the mounting surface 52a of the mounting portion 52.

First, the battery structure 23 as shown in FIG. 4 is manufactured (manufacturing step S1). The battery structure 23 is arranged so as to surround the electrode laminate 13 in which a plurality of bipolar electrodes 11 are laminated via the separator 12, and has a plurality of communication holes 20a communicating with the internal space V. It is provided with a primary seal portion 20. The battery structure 23 does not have the secondary seal portion 21 in the bipolar battery 2 shown in FIG. 2, and has a plurality of cell structures. One cell is composed of two nickel foils 15, a positive electrode 16, a negative electrode 17, a separator 12, and a primary seal portion 20.

Subsequently, as shown in FIG. 4, a constraint step S2 is performed in which the electrode laminate 13 is constrained by the pair of restraint plates 24 along the stacking direction of the plurality of bipolar electrodes 11. In the restraint step S2, first, a pair of restraint plates 24 (restraint members), a plurality of spacers 25, and a plurality of fastening members 26 are prepared. The pair of restraint plates 24 are members that sandwich the electrode laminate 13 in the stacking direction. Each of the pair of restraint plates 24 has a thick plate shape and is made of a metal such as iron. The weight of each restraint plate 24 is about 20 kg.

The spacer 25 is a cylindrical member that sets the distance between the pair of restraint plates 24, and is arranged between the pair of restraint plates 24. The spacer 25 is made of a metal such as iron. The axial length (length dimension in the axial direction) of the spacer 25 coincides with the dimension in the stacking direction of the electrode laminate 13 in the bipolar battery 2.

The fastening member 26 fastens a pair of restraint plates 24 together with the spacer 25. Of the pair of restraint plates 24, the edge of one of the restraint plates 24 is provided with a plurality of insertion holes 24a through which the shaft portion 27b of the bolt 27 is inserted while the head portion 27a of the bolt 27 is buried. Of the pair of restraint plates 24, the edge of the other restraint plate 24 is provided with a plurality of screw holes 24b to be screwed with the shaft portion 27b.

Then, the electrode laminate 13 is constrained by the pair of restraint plates 24 so that the distance between the pair of restraint plates 24 has a predetermined predetermined length. Specifically, with the electrode laminate 13 sandwiched by the pair of restraint plates 24 together with the spacer 25, the shaft portion 27b of the bolt 27 is inserted into the insertion hole 24a and the spacer 25 of one of the restraint plates 24 in order. The tip of the shaft portion 27b is screwed into the screw hole 24b of the other restraint plate 24. As a result, the separator 12 is compressed from the initial state, and a restraining load in the stacking direction is applied to the electrode laminated body 13.

Subsequently, the mounting step S3 for mounting the battery structure 23 on the liquid injection device 50 is performed. In the mounting step S3, the side surface 20b provided with the communication hole 20a of the primary seal portion 20 faces the seal member 57 so that the internal space V and the through hole 52h communicate with each other through the communication hole 20a. The body 23 is placed on the mounting portion 52. At this time, the battery structure 23 is placed in the mounting position of the mounting portion 52 by being inserted between the pair of defined members 53. By mounting the battery structure 23 at the mounting position, the communication hole 20a provided in the primary seal portion 20 communicates with the supply pipe 54 via the through hole 52h (through hole 56h, 57h). Then, due to the weight of the battery structure 23 and the pair of restraint plates 24, the peripheral region of the communication hole 20a on the side surface 20b of the primary sealing portion 20 is pressed against the sealing member 57 of the mounting portion 52.

Subsequently, the liquid injection step S4 in which the electrolytic solution F is injected (supplied) into the internal space V by the liquid injection device 50 is performed. Specifically, the electrolytic solution F is injected into each internal space V (cell) of the battery structure 23 through the supply pipe 54, the through hole 52h, and the communication hole 20a by the plurality of syringes 55.

As described above, in the method for manufacturing the bipolar battery 2 and the liquid injection device 50, the internal space V of the battery structure 23 and the through hole 52h penetrating the mounting portion 52 of the liquid injection device 50 are the battery structure. The battery structure 23 injects liquid so that the side surface 20b provided with the communication hole 20a of the primary seal portion 20 faces the seal member 57 so as to communicate through the communication hole 20a provided in the primary seal portion 20 of the 23. It is mounted on the mounting portion 52 of the device 50. Therefore, due to the weight of the battery structure 23, the side surface 20b of the primary seal portion 20 is pressed against the seal member 57. As a result, the liquid injection device 50 and the primary seal portion 20 can be held in close contact with each other without using a bolt, a robot, or the like. As a result, it becomes possible to improve the manufacturing efficiency of the bipolar battery 2.

The battery structure 23 in a state of being restrained by a pair of restraint plates 24 along the stacking direction of the plurality of bipolar electrodes 11 is mounted on the mounting portion 52. Therefore, the side surface 20b of the primary seal portion 20 is pressed against the seal member 57 not only by the battery structure 23 but also by the weight of the pair of restraint plates 24. As a result, the liquid injection device 50 and the primary seal portion 20 can be held in close contact with each other.

By inserting the battery structure 23 between the pair of defined members 53, the battery structure 23 is mounted at the mounting position of the mounting portion 52. In this way, the battery structure 23 is mounted at the mounting position simply by inserting the battery structure 23 between the pair of defined members 53, which simplifies the mounting work of the battery structure 23. be able to.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments.

For example, in the above embodiment, the above steps S2 to S4 are carried out in the battery structure 23 without the secondary seal portion 21, but the present invention is not particularly limited to the above embodiment, and the secondary seal portion 21 is present. The above steps S2 to S4 may be carried out in the battery structure of the above.

Further, in the airtightness inspection of the battery structure 23, the sealing can be performed in the same manner. In this case, as shown in FIG. 5, a supply device 50A for supplying gas to the internal space V of the battery structure 23 is used instead of the liquid injection device 50. The supply device 50A is mainly different from the liquid injection device 50 in that the supply unit 51A is provided in place of the supply unit 51. The supply unit 51A supplies gas to the internal space V through the communication hole 20a. As the gas supplied by the supply unit 51A, a gas having a small proportion present in the atmosphere is used. Examples of such gases include helium and hydrogen. The supply unit 51A is mainly different from the supply unit 51 in that the supply pipe 54A and the gas cylinder 58 are provided in place of the supply pipe 54 and the syringe 55. In the present embodiment, the supply unit 51A includes one gas cylinder 58, and the gas cylinder 58 and each internal space V are connected by a supply pipe 54A.

In the airtightness inspection, the battery structure 23 in which the electrode laminate 13 is constrained by the pair of restraint plates 24 is used through the manufacturing step S1 and the restraint step S2. Then, a mounting step of mounting the battery structure 23 on the supply device 50A is performed. In the mounting step, as in the mounting step S3, the side surface 20b provided with the communication hole 20a of the primary seal portion 20 is provided with the communication hole 20a so that the internal space V and the through hole 52h communicate with each other through the communication hole 20a. The battery structure 23 is mounted on the mounting portion 52 so as to face each other. At this time, the battery structure 23 is placed in the mounting position of the mounting portion 52 by being inserted between the pair of defined members 53. By mounting the battery structure 23 at the mounting position, the communication hole 20a provided in the primary seal portion 20 communicates with the supply pipe 54 via the through hole 52h (through hole 56h, 57h). Then, due to the weight of the battery structure 23 and the pair of restraint plates 24, the peripheral region of the communication hole 20a on the side surface 20b of the primary sealing portion 20 is pressed against the sealing member 57 of the mounting portion 52. Subsequently, a supply step of supplying gas to the internal space V by the supply device 50A is performed. Specifically, the gas cylinder 58 supplies gas into each internal space V (cell) of the battery structure 23 through the supply pipe 54A, the through hole 52h, and the communication hole 20a. Then, by detecting the gas leak, the airtightness inspection of the battery structure 23 is performed.

Further, in the above embodiment, the bipolar battery 2 is a nickel hydrogen secondary battery, but the bipolar battery 2 is not particularly limited to the nickel hydrogen secondary battery, and may be a lithium ion secondary battery or the like.

2 ... Bipolar battery, 11 ... Bipolar electrode, 13 ... Electrode laminate, 14 ... Frame body, 20 ... Primary seal part, 20a ... Communication hole, 20b ... Side surface, 21 ... Secondary seal part, 23 ... Battery structure, 24 ... Restraint plate, 50 ... Liquid injection device, 50A ... Supply device, 51, 51A ... Supply section, 52 ... Mounting section, 52a ... Mounting surface, 52h ... Through hole, 53 ... Specified member, 54, 54A ... Supply pipe , 55 ... Syringe, 56 ... Mounting table, 56h ... Through hole, 57 ... Seal member, 57h ... Through hole, 58 ... Gas cylinder, F ... Electrolyte, V ... Internal space.

Claims (4)

It communicates with an electrode laminate in which a plurality of bipolar electrodes are laminated and an internal space formed between two bipolar electrodes adjacent to each other among the plurality of bipolar electrodes, which are arranged so as to surround the electrode laminate. A process of manufacturing a battery structure having a sealing portion provided with a communication hole, and
The process of mounting the battery structure on the supply device and
The step of supplying the electrolytic solution or gas to the internal space by the supply device,
Equipped with
The supply device is
The supply pipe that supplies the electrolytic solution or the gas, and
A mounting portion for mounting the battery structure and
Equipped with
The previously described mounting portion includes a mounting table and a seal member provided on the upper surface of the previously described table.
The above-mentioned place is provided with a through hole that penetrates the above-mentioned stand and the seal member and communicates with the supply pipe.
In the step described above, the battery structure is such that the surface of the seal portion provided with the communication hole faces the seal member so that the internal space and the through hole communicate with each other through the communication hole. A method of manufacturing a power storage module in which a body is placed in the above-mentioned mounting part. Further, a step of restraining the electrode laminated body with a restraining member along the stacking direction of the plurality of bipolar electrodes is provided.
The method for manufacturing a power storage module according to claim 1, wherein in the step of placing the battery structure in the state of restraining the electrode laminate with the restraining member, the battery structure is placed in the place of the preceding description. The supply device further comprises a pair of defining members that define the mounting position of the battery structure in the previously described mounting portion.
The step according to claim 1 or 2, wherein the battery structure is placed in the previously described placement position by inserting the battery structure between the pair of specified members. Manufacturing method of power storage module. It communicates with an electrode laminate in which a plurality of bipolar electrodes are laminated and an internal space formed between two bipolar electrodes adjacent to each other among the plurality of bipolar electrodes, which are arranged so as to surround the electrode laminate. A supply device for supplying an electrolytic solution or gas to a battery structure having a sealing portion provided with a communication hole.
The supply pipe that supplies the electrolytic solution or the gas, and
A mounting portion for mounting the battery structure and
A pair of defining members that define the mounting position of the battery structure in the above-mentioned mounting portion, and
Equipped with
The previously described mounting portion includes a mounting table and a seal member provided on the upper surface of the previously described table.
The above-mentioned place is provided with a through hole that penetrates the above-mentioned stand and the seal member and communicates with the supply pipe.
The pair of defining members has the internal space and the penetration when the battery structure is placed on the above-mentioned mounting portion with the surface of the sealing portion provided with the communication hole facing the sealing member. A supply device that defines the previously described placement position so that the holes communicate with each other through the communication holes.

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