JP2019040770A - Manufacturing installation of power storage module - Google Patents

Abstract

To provide a manufacturing installation of power storage module capable of reducing the running cost.SOLUTION: A manufacturing installation of a power storage module 12 including an electrode plate 34 provided with an active material at least on one side, and a first resin part 52 deposited to a marginal part 34a of the electrode plate 34, is further provided with an ultrasonic wave generation part 72 for generating supersonic vibration, a horn 75 for transmitting the supersonic vibration, generated by the ultrasonic wave generation part, to the first resin part by pushing against the first resin part, a mold platen 71 on which the first resin part and the electrode plate are placed, and a drive part 74 for moving a press member disjunctively for the first resin part and the electrode plate placed on the mold platen, where heat conductivity of the mold platen is 1.30 (W/m k) or less.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an apparatus for manufacturing a power storage module.

  There is known a secondary battery having a laminate in which an electrode coated with an active material is laminated on at least one surface of a sheet-like current collector. For example, Patent Document 1 describes a bipolar battery assembly in which bipolar battery plates are stacked while being held in a plastic casing frame. In this bipolar battery assembly, a casing frame made of a resin member and a bipolar battery plate made of a metal foil are welded to each other by ultrasonic welding.

Special table 2017-508241 gazette

  In the case where the resin member and the metal foil are welded to each other by an ultrasonic welding apparatus, in order to suppress the release of heat through the placement portion on which the resin member and the metal foil are placed, the resin member and the metal foil The welding process is performed in a state in which the heat insulating sheet is disposed between the mounting portion. However, since the heat insulating sheet is a consumable item and needs to be replaced in a relatively short period of time, it requires a running cost.

  Therefore, an object of the present invention is to provide a storage module manufacturing apparatus that can reduce running costs.

  An electrical storage module manufacturing apparatus of the present invention is an electrical storage module manufacturing apparatus comprising a metal foil provided with an active material on at least one surface, and a resin member welded to an edge of the metal foil. An ultrasonic generator that generates ultrasonic vibrations, a pressing member that transmits ultrasonic vibration generated by the ultrasonic generators to the resin member by pressing the resin member, and a mounting unit on which the resin member and the metal foil are mounted And a drive unit that moves the pressing member so as to be detachable from the resin member and the metal foil placed on the placement unit, and the thermal conductivity of the placement unit is 1.30 (W / m K) or less.

  In this power storage module manufacturing apparatus, the mounting portion itself on which the resin member and the metal foil are mounted has a predetermined heat insulating property, so that a welding operation can be performed without disposing a heat insulating sheet or the like. Thereby, since it is not necessary to use a heat insulation sheet, a running cost can be reduced.

  In the power storage module manufacturing apparatus of the present invention, the mounting portion includes at least a first region including a region where the pressing member overlaps a portion pressing the resin member when viewed from the moving direction of the pressing member, and the first mounting portion. A second region disposed around the first region, the thermal conductivity of the first region is 1.30 (W / m · k) or less, and the thermal conductivity of the second region is the first region It may be higher than the thermal conductivity. Thereby, since the material with a high heat insulation effect can be arrange | positioned only in the required location, the manufacturing cost of a mounting part can be suppressed.

  In the power storage module manufacturing apparatus of the present invention, the first region may extend in one direction. Thereby, the whole one side of the portion where the resin member is welded to the metal foil can be placed, and the whole one side can be welded in one operation. As a result, production efficiency can be increased.

  In the power storage module manufacturing apparatus of the present invention, the first region is formed in a frame shape when viewed from the moving direction. Thereby, the whole part by which the resin member is welded to metal foil can be mounted, and one electrode plate can be welded by one operation | work. As a result, production efficiency can be increased.

  The power storage module manufacturing apparatus of the present invention further includes a control unit that controls the ultrasonic wave generation unit and the drive unit, and the control unit is configured to operate the ultrasonic wave generated by the ultrasonic wave generation unit while pressing the pressing member against the resin member by the drive unit. After the sound wave vibration is stopped and the resin member melted by the ultrasonic vibration is solidified, the pressing member is separated from the resin member by the driving unit. Thereby, even when the molten resin member is solidified and contracts, the pressing member continues to press the resin member, so that the resin can be poured into the gap between the resin member and the electrode plate caused by the contraction. Thereby, the bonding force between the resin member and the electrode plate can be further improved.

  According to the present invention, running cost can be reduced.

It is a schematic sectional drawing which shows an electrical storage apparatus provided with the electrical storage module which concerns on one Embodiment. It is a schematic sectional drawing which shows the electrical storage module which comprises the electrical storage apparatus of FIG. FIG. 3A is a diagram illustrating a schematic configuration of a power storage module manufacturing apparatus according to an embodiment. FIG. 3B is a plan view showing a positional relationship between the horn and the first region of the surface plate in the power storage module manufacturing apparatus according to the modification. 4 (A) and 4 (B) are explanatory views for explaining the welding process. Drawing 5 (A)-Drawing 5 (C) are figures for explaining the operation effect of the manufacturing method of the storage module concerning one embodiment. 6A and 6B are plan views showing a surface plate of a power storage module manufacturing apparatus according to a modification.

  Hereinafter, an apparatus for manufacturing a power storage module according to an embodiment will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a schematic cross-sectional view illustrating an embodiment of a power storage device including a power storage module. The power storage device 10 shown in the figure is used as a battery for various vehicles such as forklifts, hybrid vehicles, and electric vehicles. The power storage device 10 includes a plurality of (three in the present embodiment) power storage modules 12, but may include a single power storage module 12. The power storage module 12 is, for example, a bipolar battery. The power storage module 12 is, for example, a secondary battery such as a nickel metal hydride battery or a lithium ion secondary battery, but may be an electric double layer capacitor. In the following description, a nickel metal hydride battery is illustrated.

  The plurality of power storage modules 12 can be stacked via a conductive plate 14 such as a metal plate. As viewed from the stacking direction D1, the power storage module 12 and the conductive plate 14 have, for example, a rectangular shape. Details of each power storage module 12 will be described later. The conductive plates 14 are also arranged outside the power storage modules 12 positioned at both ends in the stacking direction D1 (Z direction) of the power storage modules 12, respectively. The conductive plate 14 is electrically connected to the adjacent power storage module 12. Thereby, the some electrical storage module 12 is connected in series in the lamination direction D1. In the stacking direction D1, an extraction portion 24 is connected to the conductive plate 14 located at one end, and an extraction portion 26 is connected to the conductive plate 14 located at the other end. The extraction part 24 may be integrated with the conductive plate 14 to be connected. The extraction part 26 may be integrated with the conductive plate 14 to be connected. The extraction part 24 and the extraction part 26 extend in a direction (X direction) intersecting the stacking direction D1. The power storage device 10 can be charged and discharged by the extraction unit 24 and the extraction unit 26.

  The conductive plate 14 can also function as a heat radiating plate for releasing heat generated in the power storage module 12. When a refrigerant such as air passes through the plurality of gaps 14a provided inside the conductive plate 14, heat from the power storage module 12 can be efficiently released to the outside. Each gap 14a extends, for example, in a direction (Y direction) intersecting the stacking direction D1. As viewed from the stacking direction D1, the conductive plate 14 is smaller than the power storage module 12, but may be the same as or larger than the power storage module 12.

  The power storage device 10 may include a restraining member 16 that restrains the alternately stacked power storage modules 12 and conductive plates 14 in the stacking direction D1. The restraining member 16 includes a pair of restraining plates 16A and 16B and a connecting member (bolt 18 and nut 20) for joining the restraining plates 16A and 16B to each other. An insulating film 22 such as a resin film is disposed between the restraining plates 16A and 16B and the conductive plate. Each restraint plate 16A, 16B is comprised, for example with metals, such as iron. When viewed from the stacking direction D1, each of the restraining plates 16A and 16B and the insulating film 22 has, for example, a rectangular shape. The insulating film 22 is larger than the conductive plate 14, and the restraining plates 16 </ b> A and 16 </ b> B are larger than the power storage module 12. As viewed from the stacking direction D1, an insertion hole H1 through which the shaft portion of the bolt 18 is inserted is provided at a position on the outer side of the power storage module 12 at the edge portion of the restraint plate 16A. Similarly, an insertion hole H2 through which the shaft portion of the bolt 18 is inserted is provided at a position on the outer side of the power storage module 12 at the edge portion of the restraining plate 16B when viewed from the stacking direction D1. When the restraining plates 16A and 16B have a rectangular shape when viewed from the stacking direction D1, the insertion holes H1 and the insertion holes H2 are located at the corners of the restraining plates 16A and 16B.

  One restraint plate 16A is abutted against the conductive plate 14 connected to the take-out portion 26 via an insulating film 22, and the other restraint plate 16B is made to attach the insulating film 22 to the conductive plate 14 connected to the take-out portion 24. Has been hit through. For example, the bolt 18 is passed through the insertion hole H1 from one restraint plate 16A side to the other restraint plate 16B side, and a nut 20 is screwed to the tip of the bolt 18 protruding from the other restraint plate 16B. Yes. Thereby, the insulating film 22, the conductive plate 14, and the power storage module 12 are sandwiched and unitized, and a restraining load is applied in the stacking direction D1.

  2 is a schematic cross-sectional view showing a power storage module constituting the power storage device of FIG. The power storage module 12 shown in the figure includes a stacked body 30 in which a plurality of bipolar electrodes (electrodes) 32 are stacked. The laminated body 30 has, for example, a rectangular shape when viewed from the lamination direction D1 of the bipolar electrode 32. A separator 40 may be disposed between the adjacent bipolar electrodes 32.

  The bipolar electrode 32 includes an electrode plate (metal foil) 34, a positive electrode 36 provided on one surface 34 b of the electrode plate 34, and a negative electrode 38 provided on the other surface 34 c of the electrode plate 34. In the stacked body 30, the positive electrode 36 of one bipolar electrode 32 faces the negative electrode 38 of one bipolar electrode 32 adjacent in the stacking direction D 1 across the separator 40, and the negative electrode 38 of one bipolar electrode 32 is connected to the separator 40. Is opposed to the positive electrode 36 of the other bipolar electrode 32 adjacent in the stacking direction D1. In the stacking direction D1, an electrode plate 34 (negative electrode termination electrode) having a negative electrode 38 disposed on the inner surface is disposed at one end of the stacked body 30, and a positive electrode 36 is disposed on the inner surface at the other end of the stacked body 30. The disposed electrode plate 34 (positive terminal electrode) is disposed. The negative electrode 38 of the negative electrode-side termination electrode faces the positive electrode 36 of the uppermost bipolar electrode 32 with the separator 40 interposed therebetween. The positive electrode 36 of the positive terminal electrode is opposed to the negative electrode 38 of the lowermost bipolar electrode 32 with the separator 40 interposed therebetween. The electrode plates 34 of these termination electrodes are connected to the adjacent conductive plates 14 (see FIG. 1).

  The power storage module 12 includes a frame 50 that holds the edge 34a of the electrode plate 34 on the side surface 30a of the stacked body 30 extending in the stacking direction D1. The frame body 50 is configured to surround the side surface 30 a of the stacked body 30. The frame 50 includes a first resin portion (resin member) 52 that holds the edge portion 34a of the electrode plate 34, and a second resin portion 54 that is provided around the first resin portion 52 when viewed from the stacking direction D1. obtain.

  The first resin portion 52 constituting the inner wall of the frame 50 is provided from one surface 34b (surface on which the positive electrode 36 is formed) of the electrode plate 34 of each bipolar electrode 32 to the end surface of the electrode plate 34 at the edge portion 34a. ing. As viewed from the stacking direction D1, each first resin portion 52 is provided over the entire circumference of the edge portion 34a of the electrode plate 34 of each bipolar electrode 32. Adjacent first resin portions 52 are in contact with each other on the surface extending outside the other surface 34c (surface on which the negative electrode 38 is formed) of the electrode plate 34 of each bipolar electrode 32. As a result, in the first resin portion 52, as in the case of the electrode plate 34 of each bipolar electrode 32, the edge portions 34 a of the electrode plates 34 arranged on both sides of the laminate 30 are also embedded in the first resin portion 52. Is retained. Thereby, between the electrode plates 34 and 34 adjacent to each other in the stacking direction D <b> 1, a plurality of internal spaces V that are airtightly partitioned by the electrode plates 34 and 34 and the first resin portion 52 are formed. In the internal space V, for example, an electrolytic solution (not shown) made of an alkaline solution such as an aqueous potassium hydroxide solution is accommodated.

  The 2nd resin part 54 which comprises the outer wall of the frame 50 is a cylindrical part extended about the lamination direction D1 as an axial direction. The second resin portion 54 extends over the entire length of the stacked body 30 in the stacking direction D1. The second resin portion 54 covers the outer surface of the first resin portion 52 extending in the stacking direction D1. The second resin portion 54 is welded to the first resin portion 52 on the inner side when viewed from the stacking direction D1. The second resin portion 54 is welded to the outer surface of the first resin portion 52 by, for example, heat during injection molding.

  The 1st resin part 52 and the 2nd resin part 54 are formed in the rectangular cylinder shape with the insulating resin which has alkali tolerance, for example. Examples of the resin material constituting the first resin portion 52 and the second resin portion 54 include polypropylene (PP), polyphenylene sulfide (PPS), or modified polyphenylene ether (modified PPE).

  The electrode plate 34 is made of metal, and is made of, for example, nickel or a nickel-plated steel plate. The electrode plate 34 is a rectangular metal foil made of nickel, for example. The edge portion 34 a of the electrode plate 34 is an uncoated region where the positive electrode active material and the negative electrode active material are not coated, and the uncoated region is buried in the first resin portion 52 constituting the inner wall of the frame body 50. It is an area to be held. An example of the positive electrode active material constituting the positive electrode 36 is nickel hydroxide. Examples of the negative electrode active material constituting the negative electrode 38 include a hydrogen storage alloy. The formation region of the negative electrode 38 on the other surface 34 c of the electrode plate 34 is slightly larger than the formation region of the positive electrode 36 on the one surface 34 b of the electrode plate 34. Concavities and convexities are formed on at least one surface 34 b of the electrode plate 34. In the present embodiment, the surface on which the positive electrode 36 is disposed has unevenness formed by electroplating. The range to be electroplated may be all of the surface on which the positive electrode 36 is disposed, or may be a part of the edge 34a.

  The separator 40 is formed in a sheet shape, for example. Examples of the material forming the separator 40 include a porous film made of a polyolefin resin such as polyethylene (PE) and polypropylene (PP), and a woven fabric or a nonwoven fabric made of polypropylene. The separator 40 may be reinforced with a vinylidene fluoride resin compound or the like.

  Next, a manufacturing apparatus 70 for the power storage module 12 (hereinafter also simply referred to as “manufacturing apparatus”) used in the method for manufacturing the power storage module 12 described above will be described. The manufacturing apparatus 70 is a manufacturing apparatus for manufacturing the power storage module 12 and is an ultrasonic welding apparatus for welding the first resin portion 52 and the edge portion 34a of the electrode plate 34 by ultrasonic waves (energy).

  As shown in FIG. 4, the manufacturing apparatus 70 includes a surface plate (mounting unit) 71, an ultrasonic generator 72, a horn (pressing member) 75, a drive unit 74, and a controller 80. Yes. The surface plate 71 is disposed to face the tip of the horn 75. Below, let the opposing direction of the surface plate 71 and the horn 75 be an up-down direction.

  The surface plate 71 has a mounting surface 71a on which the electrode plate 34 and the first resin portion 52 to be ultrasonically welded (welding target) are placed. The thermal conductivity of the mounting surface 71a of the surface plate 71 is 1.30 (W / m · k) or less. The placement surface 71a is made of, for example, silicic acid, iso-type unsaturated polyester, epoxy resin, borate or the like having a high heat insulating effect.

  The ultrasonic generator 72 generates ultrasonic vibrations using an ultrasonic vibrator made of, for example, a piezo element. The ultrasonic generator 72 generates, for example, vertical vibrations. The ultrasonic generator 72 adjusts the amplitude with a booster, and then inputs ultrasonic vibration to the horn 75.

  The horn 75 is connected to the ultrasonic wave generation unit 72 and transmits the ultrasonic vibration generated in the ultrasonic wave generation unit 72 to the first resin portion 52 that is a welding target. The horn 75 is made of a metal material such as aluminum or titanium, for example.

  The drive unit 74 is, for example, an air cylinder, and the horn 75 is attached to a piston of the air cylinder so as to be movable up and down. The drive unit 74 drives the horn 75 downward toward the welding target, thereby pressing the horn 75 against the first resin portion 52 with a predetermined load.

  The controller (control unit) 80 controls the ultrasonic wave generation unit 72 and the drive unit 74. The controller 80 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), an input / output interface, and the like. Various programs or data are stored in the ROM. For example, the controller 80 of the present embodiment stops the ultrasonic vibration generated by the ultrasonic wave generation unit 72 in a state where the horn 75 is pressed against the first resin unit 52, and the first resin unit 52 melted by the ultrasonic vibration is generated. After the solidification, the ultrasonic generator 72 and the drive unit 74 are controlled so that the horn 75 is separated from the first resin part 52.

  Next, a method for manufacturing the power storage module 12 using the manufacturing apparatus 70 for the power storage module 12 will be described. In the present embodiment, the first resin portion 52 made of resin is welded to the edge portion 34a of the electrode plate 34 in which irregularities are formed on at least one surface 34b. The electrode plate 34 with the irregularities formed on at least one surface 34b may be formed, for example, by processing a metal foil in an upstream process. Specifically, the unevenness may be formed by electroplating one surface 34b of the electrode plate 34. The size of the unevenness formed on the one surface 34b of the electrode plate 34 is not particularly limited. However, if the thickness of the electrode plate 34 is 0.1 μm to 1000 μm, the size of the unevenness is set to 0.1 μm to 30 μm. can do. Thereafter, a positive electrode active material layer is formed on one surface 34b of the electrode plate 34, and a negative electrode active material layer is formed on the other surface 34c. That is, the bipolar electrode 32 is formed.

  Next, the first resin portion 52 (see FIG. 4A) arranged in a frame shape on the edge portion 34a of the electrode plate 34 is pressed with a predetermined load by the horn 75, and the horn 75 is interposed therebetween. Then, ultrasonic vibration is applied to the first resin portion 52 (see FIG. 4B). Specifically, the ultrasonic generator 72 generates ultrasonic vibrations to vibrate the horn 75. Subsequently, the drive unit 74 moves the horn 75 downward toward the first resin portion 52 and presses the horn 75 against the first resin portion 52 with a predetermined load. The horn 75 transmits vibration energy of ultrasonic vibration generated in the ultrasonic generator 72 to the first resin portion 52. Thereby, heat (friction heat) due to friction is generated at the boundary surface between the first resin portion 52 and the electrode plate 34, and the temperature of the first resin portion 52 rises. As a result, the first resin portion 52 is melted.

  Next, after the ultrasonic vibration by the ultrasonic generator 72 is stopped in a state where the horn 75 is pressed against the first resin part 52 by the drive part 74, the first resin part 52 melted by the ultrasonic vibration is solidified. The drive unit 74 separates the horn 75 from the first resin unit 52. Note that the timing of driving by the driving unit 74 and the timing of generating ultrasonic vibration by the ultrasonic generating unit 72 are not limited to the above-described contents.

  Next, the unit in which the first resin portion 52 is disposed on the edge portion 34a of the electrode plate 34 formed as described above is laminated. Next, the second resin portion 54 that covers the outer side surface 52s of the laminated first resin portion 52 is formed. The second resin portion 54 is formed by, for example, injection molding. Through such steps, the power storage module 12 as shown in FIG. 2 is manufactured.

  As described above, according to the manufacturing apparatus 70 for the power storage module 12 of the above embodiment, the surface plate 71 on which the first resin portion 52 and the electrode plate 34 are placed has a predetermined heat insulating property. It is possible to perform welding without arranging a heat insulating sheet or the like. Thereby, since it is not necessary to use a heat insulation sheet, a running cost can be reduced.

  In the method for manufacturing the power storage module 12 of the above embodiment, the unevenness is formed on at least one surface 34 b of the electrode plate 34. For this reason, since an unevenness | corrugation can be formed in the electrode plate 34 without an unevenness | corrugation, or the electrode plate 34 with a comparatively small unevenness amount, joining to the electrode plate 34 and the 1st resin part 52 can be strengthened more. Specifically, one surface 34b of the electrode plate 34 is roughened by electroplating. When the electrode plate 34 is roughened as described above, the melted first resin portion 52 enters the concave portion formed by the roughening, and the anchor effect is exhibited. In this case, although air tends to remain in the recesses, according to the manufacturing apparatus 70 of the power storage module 12, the mounting surface 71a of the surface plate 71 is formed of a member having heat insulation properties. It is difficult for the temperature to fall, and the molten resin easily enters the unevenness.

  The case where the electrode plate 34 is roughened will be described in detail with reference to FIGS. 5 (A) to 5 (C). As shown in FIGS. 5A to 5C, the one surface 34b of the electrode plate 34 is roughened to form a plurality of protrusions 34d. The protrusion 34d may have, for example, a shape that tapers from the proximal end side toward the distal end side. 5A to 5C are schematic diagrams, and the shape and density of the protrusions 34d are not particularly limited.

  FIG. 5A shows the first resin portion 52 and the electrode plate 34 before ultrasonic welding. FIG. 5B shows the first resin portion 52 and the electrode plate 34 in a power storage module manufactured by a conventional method, that is, by a manufacturing apparatus having a surface plate with poor heat insulation. In this case, cavities remain in the recesses formed between the plurality of protrusions 34d, and a plurality of cavities 34g are formed. On the other hand, in the power storage module 12 manufactured by the manufacturing apparatus 70 of the present embodiment, the molten resin can be secured for a long time, so that the resin in a molten state sufficiently enters the unevenness. Can be made. For this reason, even if the electrode plate 34 is roughened, formation of the cavity 34g can be suppressed.

  Although one embodiment has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention.

  In the said embodiment, although the example which forms the whole mounting surface 71a of the surface plate 71 with a heat insulating material (thermal conductivity is 1.30 (W / m * k) or less) was demonstrated, to this, It is not limited. For example, as shown in FIG. 3B, the surface plate 71 includes at least a region that overlaps a portion where the horn 75 presses the first resin portion 52 when viewed from the vertical direction (movement direction of the horn 75). It has 1st area | region A1 and 2nd area | region A2 arrange | positioned around 1st area | region A1, and it is good also considering the heat conductivity of 1st area | region as 1.30 (W / m * k) or less. In addition, in the surface plate 71 of the embodiment shown in FIG. 3 (B), when viewed from above and below, the region where the horn 75 overlaps the portion pressing the first resin portion 52 and the first region A1 are completely one. I'm doing it. The thermal conductivity of the second region A2 may be the same as or higher than the thermal conductivity of the first region A1.

  At this time, as shown in FIG. 6A, the first region A1 may extend in one direction. For example, if the length L1 of the first region A1 and the length of one side of the electrode plate 34 are formed to be substantially the same or longer than that, the entire one side of the electrode plate 34 can be welded in one operation. As a result, production efficiency can be increased.

  Further, as shown in FIG. 6B, the first region A1 may be formed in a frame shape when viewed from the vertical direction (moving direction). For example, by forming the size of the first region A1 formed in the frame shape according to the size of the electrode plate 34, the entire portion where the first resin portion 52 is welded to the electrode plate 34 can be placed. it can. As a result, since one electrode plate 34 can be welded by one operation, production efficiency can be improved.

  In the above-described embodiment or modification, the example in which the unevenness is formed on one surface 34b of the electrode plate 34 has been described, but the electrode plate 34 having the unevenness formed on the other surface 34c or both surfaces 34b, 34c is described. You may prepare. In this case, the first resin portion 52 may be welded on the other surface 34c, or the first resin portion 52 may be welded on both surfaces 34b and 34c.

  DESCRIPTION OF SYMBOLS 10 ... Power storage device, 12 ... Power storage module, 14 ... Conductive plate, 32 ... Bipolar electrode, 34 ... Electrode plate (metal foil), 34a ... Edge part, 50 ... Frame, 52 ... First resin part (resin member), 52s ... outer side surface, 54 ... second resin part, 70 ... manufacturing apparatus, 71 ... stool, 71a ... mounting surface, 72 ... ultrasonic wave generation part, 74 ... drive part, 75 ... horn (pressing member), 80 ... Controller, A1 ... first region, A2 ... second region.

Claims (5)

A power storage module manufacturing apparatus comprising: a metal foil provided with an active material on at least one surface; and a resin member welded to an edge of the metal foil,
An ultrasonic generator that generates ultrasonic vibrations;
A pressing member that transmits the ultrasonic vibration generated by the ultrasonic generator to the resin member by pressing the ultrasonic vibration against the resin member;
A mounting portion on which the resin member and the metal foil are mounted;
A drive unit that moves the pressing member so as to be separable from the resin member and the metal foil placed on the placement unit;
With
The electrical storage module manufacturing apparatus whose thermal conductivity of the said mounting part is 1.30 (W / m * k) or less. The mounting portion is disposed around the first mounting portion and a first region including at least a region where the pressing member overlaps a portion pressing the resin member when viewed from the moving direction of the pressing member. A second region,
The thermal conductivity of the first region is 1.30 (W / m · k) or less,
The electrical storage module manufacturing apparatus according to claim 1, wherein the thermal conductivity of the second region is higher than the thermal conductivity of the first region.   The power storage module manufacturing apparatus according to claim 2, wherein the first region extends in one direction.   The said 1st area | region is a manufacturing apparatus of the electrical storage module of Claim 2 or 3 currently formed in frame shape seeing from the said moving direction. A control unit for controlling the ultrasonic wave generation unit and the driving unit;
The control unit stops ultrasonic vibration by the ultrasonic wave generation unit in a state in which the pressing member is pressed against the resin unit by the driving unit, and after the resin unit melted by ultrasonic vibration is solidified, The power storage module manufacturing apparatus according to claim 1, wherein the pressing member is separated from the resin portion by the driving portion.

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