JP2019029091A - Peeling apparatus - Google Patents

Abstract

To provide a peeling apparatus capable of preventing flaws.SOLUTION: A peeling apparatus 70 comprises: a conveying part 61 which arranges a battery cell 2 at a peeling position P for peeling a peeling sheet 22; a nozzle 71 which is arranged on one end side of an outer surface 3a, of the battery cell 2, to which double-sided tape 20 is adhered, and which forms a gas flow F1 in a first region R1 by blowing air at the first region R1; and a flow straightening member 73 which is arranged, while being spaced away from the double-sided tape 20, at a first position P1 facing the outer surface 3a across the double-sided tape 20, thereby limiting the passage width of the gas flow F1 in a first direction intersecting the outer surface 3a.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a peeling apparatus.

  Patent Document 1 describes a release paper stripper. This release paper stripper includes a single-edged member and a knob that are configured on the main body. In this release paper stripper, the single-sided blade member configured on the main body is applied to the double-sided tape adhesive surface and the tip of the release paper that are affixed to the material. And separating the double-sided tape adhesive surface and the release paper to a position where they can be easily peeled off from the front cut surface, and peeling off the release paper.

JP-A-2015-203110

  In the above release paper peeling device, there is a possibility that the single-edged member may damage the surface of the workpiece when the release paper is peeled off. In particular, when the surface of the work is the outer surface of the battery cell, it is important to suppress the occurrence of scratches. Then, an object of this invention is to provide the peeling apparatus which can suppress generation | occurrence | production of a damage | wound.

  A peeling device according to the present invention is a peeling device for peeling a release sheet of a double-sided tape attached to a battery cell, and an arrangement unit for placing the battery cell at a peeling position for peeling the release sheet, and a battery In a state where the cell is disposed at the peeling position, the cell is disposed on one end side of the first outer surface to which the double-sided tape in the battery cell is attached, and gas is directed toward the first outer surface and the first region on the double-sided tape. The first nozzle for forming a gas flow in the first region by jetting, and the battery cell facing the first outer surface through the double-sided tape while being separated from the double-sided tape in a state where the battery cell is disposed at the peeling position. A first rectifying member that restricts the flow width of the gas flow in a first direction intersecting the first outer surface by being disposed at the first position.

  This peeling apparatus peels a peeling sheet using the negative pressure by a gas flow from the double-sided tape stuck on the 1st outer surface of the battery cell. More specifically, in this peeling apparatus, the nozzle ejects gas from one end of the first outer surface toward the first region on the double-sided tape, thereby forming a gas flow in the first region. To do. At this time, the first flow regulating member restricts the flow width of the gas flow in the first direction intersecting the first outer surface (that is, the release sheet). Thereby, the flow velocity of the gas in the first region is improved, and the negative pressure on the release sheet is increased. As a result, the release sheet can be peeled using the negative pressure of the gas flow. Thus, in this peeling apparatus, since a blade-like member or the like is not used when peeling the release sheet, it is possible to suppress the battery cell from being damaged.

  In the peeling apparatus which concerns on this invention, it is a surface on the opposite side to the 1st outer surface in a battery cell, and is arrange | positioned at the one end part side of the 2nd outer surface to which the double-sided tape was stuck, The 2nd outer surface and double-sided tape A second nozzle that forms a gas flow in the second region by ejecting gas toward the second region above, and a second position that faces the second outer surface via the double-sided tape while being separated from the double-sided tape. It may further comprise a second rectifying member that restricts the flow width of the gas flow in the first direction by being arranged. In this case, the release sheet can be peeled on both sides of the battery cell while suppressing the generation of scratches on the battery cell.

  In the peeling apparatus according to the present invention, a plurality of convex portions extending in the second direction along the gas flow may be formed on the surface of the first rectifying member and the second rectifying member on the battery cell side. In this case, even if the peeled release sheet moves so as to stick to the surface side of the flow regulating member, as a result of being supported by the convex portions, a gas flow path is secured in the region between the convex portions.

  In the peeling apparatus according to the present invention, the first rectifying member includes a first main body portion facing the first outer surface, and an end of the first main body portion in the third direction along the first outer surface and intersecting the gas flow. A first wall portion that protrudes from the portion toward the first outer surface side, and the second rectifying member includes a second main body portion that faces the second outer surface, and an end portion of the second main body portion in the third direction. And a second wall portion protruding toward the second outer surface side. In this case, the gas from the nozzle can be prevented from diffusing in the third direction.

  In the peeling apparatus according to the present invention, the driving unit that drives the first rectifying member and the second rectifying member along the first direction, the ejection of gas from the first nozzle and the second nozzle, and the driving unit are controlled. A control unit, and the control unit sandwiches the battery cell between the first rectification member and the second rectification member by controlling the drive unit so that the first rectification member and the second rectification member come closer to each other. After the first process and the first process, the first rectifying member is arranged at the first position by controlling the drive unit so that the first rectifying member and the second rectifying member are separated from each other, and the second rectifying member is You may perform the 2nd process arrange | positioned in a 2nd position, and the 3rd process which starts the ejection of the gas from a 1st nozzle and a 2nd nozzle after a 2nd process. In this case, first, the rectifying member and the battery cell are relatively positioned by the first process. Therefore, the flow path width can be kept constant during the release treatment of the release sheet for the plurality of battery cells.

  In the peeling apparatus according to the present invention, the control unit may further execute a fourth process for controlling the drive unit so that the first rectifying member and the second rectifying member are separated from each other after the third process. In this case, the interval between the peeled portion of the release sheet and the double-sided tape can be increased.

  ADVANTAGE OF THE INVENTION According to this invention, the peeling apparatus which can suppress generation | occurrence | production of a flaw can be provided.

It is a schematic side view of the battery module according to the present embodiment. FIG. 2 is a schematic plan view of the battery module shown in FIG. 1. It is a top view which shows the outline of a tape installation apparatus. It is typical sectional drawing of the sticking pad shown by FIG. It is the bottom view and schematic diagram of the sticking pad shown by FIG. It is a figure which shows the main processes of the sticking method of a double-sided tape. It is a figure which shows the main processes of the sticking method of a double-sided tape. It is a figure which shows the main processes of the sticking method of a double-sided tape. It is a top view of the peeling apparatus shown by FIG. FIG. 10 is a front view of the rectifying member shown in FIG. 9. It is a figure which shows the main processes of the peeling method of a peeling sheet. It is a figure which shows the main processes of the peeling method of a peeling sheet.

  Hereinafter, an embodiment of a battery module according to the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements or corresponding elements may be denoted by the same reference numerals, and redundant description may be omitted. In the following drawings, an orthogonal coordinate system S defined by the X axis, the Y axis, and the Z axis may be shown.

  FIG. 1 is a schematic side view of the battery module according to the present embodiment. FIG. 2 is a schematic plan view of the battery module shown in FIG. As shown in FIGS. 1 and 2, the battery module 1 includes a plurality of (for example, seven) battery cells 2 stacked in a predetermined direction.

  The battery cell 2 is a nonaqueous electrolyte secondary battery such as a lithium ion secondary battery. The battery cell 2 is electrically connected to an electrode assembly (not shown), a case 3 that houses the electrode assembly, and an electrode (a positive electrode and a negative electrode) of the electrode assembly, and a pair of protrusions protruding from the case 3 And a terminal 4. The electrode assembly includes a plurality of positive and negative electrodes, and a separator disposed between the positive and negative electrodes. The positive electrode and the negative electrode are alternately stacked via separators. The electrode stacking direction in the electrode assembly and the battery cell 2 stacking direction substantially coincide.

  Case 3 has a rectangular parallelepiped shape. The case 3 has an outer surface (first outer surface) 3a that intersects the stacking direction of the battery cells 2, and an outer surface (second outer surface) 3b opposite to the outer surface 3a. The outer side surface 3a and the outer side surface 3b are substantially parallel to each other. The case 3 extends along the stacking direction of the battery cells 2 and includes an upper surface 3c and a bottom surface 3d that connect the outer surface 3a and the outer surface 3b to each other. The terminal 4 protrudes from the upper surface 3c. Each of the battery cells 2 is individually held by the cell holder 5, but detailed illustration of the cell holder 5 is omitted.

  The battery module 1 includes a heat transfer plate 10 for radiating heat from the battery cell 2. The heat transfer plate 10 is disposed between the battery cells 2 adjacent to each other. The heat transfer plate 10 is made of metal, for example. A part of the heat transfer plate 10 is brought into contact with an external component of the heat dissipation destination.

  In the battery module 1, a plurality of double-sided tapes 20 are used. The double-sided tape 20 is disposed between the battery cells 2 adjacent to each other. The double-sided tape 20 includes a pair of adhesive surfaces and fixes the battery cells 2 together. More specifically, the double-sided tape 20 is interposed between a pair of adjacent battery cells 2 and the heat transfer plate 10. The double-sided tape 20 fixes the outer surface 3a of one battery cell 2 (case 3) and the heat transfer plate 10 to each other, and the outer surface 3b of the other battery cell 2 (case 3) and the heat transfer plate 10. Are fixed to each other. Therefore, the double-sided tape 20 is provided on both the pair of outer side surfaces 3 a and 3 b of the battery cell 2. Thus, the double-sided tape 20 fixes the battery cells 2 to each other with the heat transfer plate 10 interposed therebetween. The double-sided tape 20 has an insulating property, for example.

  In the battery module 1, as described above, the battery cells 2 held in the cell holder 5 and provided with the heat transfer plate 10 are stacked along a predetermined direction while being fixed to each other by the double-sided tape 20. Thus, a laminate is configured. In the battery module 1, a plurality of battery cells 2 are constrained and integrated by restraining members from both sides of the stacked body in the stacking direction of the battery cells 2. More specifically, the end plates 6 are disposed at both ends of the laminated body, and the end plates 6 are fastened to each other by a fastening member 7 such as a bolt, thereby restraining the battery cells 2 along the stacking direction of the battery cells 2. A load is applied and the battery cells 2 are integrated. Note that an elastic member 8 that is compressed when the battery cell 2 expands is interposed between the battery cell 2 that constitutes one end of the stacked body in the stacking direction of the battery cell 2 and the end plate 6.

  As described above, in the battery module 1, the double-sided tape 20 is used for each of the battery cells 2. Below, an example of the tape installation apparatus for providing a double-sided tape with respect to the battery cell 2 is demonstrated. FIG. 3 is a plan view showing an outline of the tape installation device. As shown in FIG. 3, the tape installation device 100 includes a sticking device 40 and a peeling device 70.

  The tape placement device 100 sticks the double-sided tape 20 to the battery cell 2 in the sticking device 40 while transporting the battery cell 2 from the sticking device 40 to the peeling device 70. Release the release sheet. Thereby, the tape installation apparatus 100 provides the double-sided tape 20 with the adhesive surface exposed to the outer side surfaces 3 a and 3 b of the battery cell 2. Therefore, the sticking device 40 is located on the upstream side of the peeling device 70 in the transport path T of the battery cell 2.

[Embodiment of sticking apparatus]
Then, one Embodiment of the sticking apparatus 40 is described. The sticking device 40 includes a pair of supply rollers 41 and a pair of sticking pads 50. In addition, the sticking device 40 and the peeling device 70 commonly have a transport unit (arrangement unit) 61 that transports the battery cell 2 along the transport path T (here, along the Y-axis direction), and control of each unit. And a control unit 62 for performing the above. The control unit 62 is mainly configured by a computer including a CPU, a ROM, a RAM, and the like, for example. Each process of the control unit 62 is realized by executing a predetermined program in the computer.

  The supply rollers 41 are arranged on both sides in a direction (here, the X-axis direction) intersecting the transport path T. Each supply roller 41 supplies the belt-like double-sided tape 20 from the direction intersecting the transport path T toward the transport path T. Here, the release sheet 22 remains on one of the pair of adhesive surfaces of the double-sided tape 20, and the other adhesive surface is exposed from the release sheet 22. The pair of supply rollers 41 supplies the double-sided tape 20 to the transport path T so that the adhesive surfaces exposed from the release sheet 22 of the pair of adhesive surfaces face each other. Note that the release sheet 22 is, for example, a release paper, a release film, or the like, and is a sheet-like member that does not have an adhesive surface.

  The sticking pad 50 is used for sticking the double-sided tape 20 to the battery cell 2. The pair of sticking pads 50 are arranged to face each other in the direction intersecting the transport path T (here, the X-axis direction). 4 is a schematic cross-sectional view of the sticking pad shown in FIG. 3, and FIG. 5A is a bottom view of the sticking pad. As shown in FIG. 4 and FIG. 5A, the sticking pad 50 includes a main body portion 51, a skirt portion 52, and a spacer portion 53.

  The main body 51 is formed in a long shape. The main body 51 has a long bottom surface 51s. The main body 51 is formed with a through-hole 51h that opens to the bottom surface 51s at substantially the center in the longitudinal direction (here, the Z-axis direction) and in the lateral direction (here, the Y-axis direction). That is, an opening (first opening) 51n is formed on the bottom surface 51s of the main body 51. A pipe 54 for introducing and discharging air (gas) is connected to the through hole 51h. As a result, the main body 51 can allow air to flow in and out from the opening 51n on the bottom surface 51s side. That is, the main body 51 can apply a positive pressure and a negative pressure to the double-sided tape 20 by the inflow and outflow of air from the opening 51n.

  The skirt portion 52 is annularly provided on the peripheral edge portion 51e of the main body portion 51 on the bottom surface 51s side. The skirt portion 52 is provided over the entire circumference of the peripheral edge portion 51e. Therefore, the main body 51 and the bottom surface 51s are surrounded by the skirt portion 52 when viewed from the direction intersecting the bottom surface 51s (here, the X-axis direction). The skirt portion 52 is formed so as to expand as the distance from the bottom surface 51s increases. Thereby, the trapezoidal space SP is formed by the skirt portion 52 and the bottom surface 51s. The space SP communicates with the opening 51n. Therefore, for example, air from the opening 51n flows into and out of the outside through the space SP.

  Here, the skirt part 52 is comprised from the elastic body. The material of the skirt portion 52 is, for example, nitrile rubber, silicone rubber, urethane rubber, fluorine rubber, or the like. Therefore, the skirt portion 52 can be elastically deformed. The shape of the space portion SP changes according to the elastic deformation of the skirt portion 52. Accordingly, when the outer shape of the battery cell 2 is deformed due to expansion, the shape of the skirt portion 52 can be deformed so as to follow the outer shape of the battery cell 2 (see FIG. 5B).

  The spacer part 53 is disposed in the space part SP. The spacer portion 53 has a long shape extending along the longitudinal direction of the main body portion 51 and the bottom surface 51s. The spacer portion 53 has a facing surface 53r that faces the bottom surface 51s of the main body portion 51, and a support surface 53s that faces the outside of the space portion SP. More specifically, the cross-sectional shape of the spacer portion 53 has a trapezoidal shape according to the cross-sectional shape of the space portion SP in a state where the skirt portion 52 is not elastically deformed, and the surface corresponding to the upper base is opposed. A surface 53r is formed, and a surface corresponding to the lower base is a support surface 53s.

  The spacer portion 53 is provided with a through hole 53h extending from the facing surface 53r and forming an opening (second opening) 53n in the support surface 53s. In addition, a convex portion 53p is formed on the facing surface 53r. The spacer portion 53 is held by the main body 51 such that the convex portion 53p is fitted into the concave portion 51p of the bottom surface 51s. In this state, the through hole 51h of the main body 51 and the through hole 53h of the spacer 53 are continuous with each other. In other words, the opening 53n of the support surface 53s communicates with the opening 51n of the main body 51 through the through hole 53h. Therefore, the air from the pipe 54 or the air to the pipe 54 flows in and out from the opening 53n through the opening 51n.

  A plurality of convex portions 53q extending along the longitudinal direction is formed on the support surface 53s. The convex portions 53q are arranged along the lateral direction of the support surface 53s in a state substantially parallel to each other. Here, the region between the convex portions 53q communicates with the opening 53n and forms an air flow path.

  With the above-described configuration, the adhesive pad 50 applies a positive pressure and a negative pressure corresponding to the inflow / outflow of air to the double-sided tape 20 to adsorb and hold the double-sided tape 20 or to attach the double-sided tape 20 to the battery cell. 2 can be pressed. The support surface 53s of the spacer portion 53 supports the double-sided tape 20 in order to prevent the double-sided tape 20 from being pulled into the space SP and deforming when the double-sided tape 20 is sucked and held.

  In addition, the drive part 55, such as an air cylinder, is connected to the sticking pad 50 (refer FIG. 3). The drive unit 55 is controlled by the control unit 62 so that the bonding pads 50 approach each other along a direction (here, the X-axis direction) intersecting the transport path T, or the bonding pad 50 is The sticking pad 50 is driven so as to move away from each other.

  Then, an example of the sticking method of the double-sided tape 20 in the sticking apparatus 40 is demonstrated. This method is a method of sticking the double-sided tape 20 to the battery cell 2 using the sticking pad 50. Moreover, this method is performed when the control part 62 performs the process which controls each part of the sticking apparatus 40. FIG.

  In this method, first, as shown in FIG. 6A, the control unit 62 applies a negative pressure to the double-sided tape 20 from the sticking pad 50 at the end of the double-sided tape 20. A process of attracting and holding the end portion of the tape 20 to the sticking pad 50 is executed (step S101). At this time, as shown in FIG. 6B, the double-sided tape 20 is supported on the support surface 53 s of the spacer portion 53 in contact with the convex portion 53 q.

  Subsequently, the control unit 62 performs a process of moving the battery cell 2 relative to the sticking pad 50 so that the tips of the outer surfaces 3a and 3b of the battery cell 2 are positioned to face the sticking pad 50. Execute (Step S102). Here, the control unit 62 moves the battery cell 2 side along the transport path T by driving the transport unit 61 in which the battery cells 2 are arranged. In this step S102, the tips of the outer surfaces 3a and 3b are positioned slightly upstream of the transport path T from the tips of the double-sided tape 20.

  Subsequently, the control unit 62 is held by the sticking pad 50 by driving the sticking pad 50 toward the outer side surfaces 3 a and 3 b so that the sticking pads 50 are close to each other under the control of the driving unit 55. The process which sticks the edge part of the double-sided tape 20 to the one end part of the outer surface 3a, 3b is performed (process S103). At this time, the controller 62 presses the double-sided tape 20 against the battery cell 2 by applying a positive pressure from the sticking pad 50 to the double-sided tape 20. Here, the tip of the double-sided tape 20 is in a state of protruding from the tips of the outer side surfaces 3a and 3b.

  Subsequently, as shown in FIG. 7A, the control unit 62 applies a positive pressure from the adhesive pad 50 to the double-sided tape 20, and the adhesive pad 50 starts from one end of the outer side surfaces 3 a and 3 b. A process of relatively moving the battery cell 2 so as to move toward the other end is executed (step S104). Here, the control unit 62 drives the transport unit 61 to move the battery cell 2 side along the transport path T. Thus, when a positive pressure is applied to the double-sided tape 20 from the sticking pad 50, as shown in FIG. 7B, the spacer portion 53 is retracted to the main body portion 51 side, and the support surface 53s and the convex part 53q are spaced apart from the double-sided tape 20.

  Subsequently, as illustrated in FIG. 8A, the control unit 62 performs a process of further promoting the relative movement of the battery cell 2 so that the sticking pad 50 exceeds the other end portions of the outer side surfaces 3a and 3b. Execute (Step S105). Again, the control unit 62 drives the transport unit 61 to move the battery cell 2 side along the transport path T. Thereby, the double-sided tape 20 is stuck to the whole outer side surface 3a, 3b. In addition, here, when the sticking pad 50 exceeds the other end of the outer side surfaces 3 a and 3 b (that is, when the sticking of the double-sided tape 20 is completed), the control unit 62 starts from the sticking pad 50. The pressure on the double-sided tape 20 is switched to a negative pressure, and the double-sided tape 20 is sucked and held on the sticking pad 50.

  Subsequently, when the control unit 62 reaches the position where the adhesive pad 50 faces the support member 56 positioned on the upstream side of the battery cell 2, the controller 62 drives the adhesive pad 50 so that the adhesive pads 50 approach each other. Then, a process of pressing the double-sided tape 20 against the support member 56 is executed (step S106). In addition, the surface which contacts the double-sided tape 20 in the support member 56 is roughened, for example, like a satin surface, so that the adhesion with the double-sided tape 20 is weakened.

  Subsequently, as shown in FIG. 8B, the control unit 62 moves the pair of cutters 57 between the battery cell 2 and the support member 56 in the vertical direction (here, using an air cylinder or the like). By driving in the Z-axis direction), a process of cutting the belt-like double-sided tape 20 is executed (step S107). Thereby, a pair of separated double-sided tapes 20 is provided for one battery cell 2 (the release sheet 22 remains).

  As shown in FIG. 8C, the cutter 57 used here includes, for example, a rectangular blade 58 having a pair of blades 58b and a blade 58 so that a part of the blade 58b is exposed. And a holder 59 for holding. According to such a cutter 57, when the exposed part of the blade 58b is deteriorated, the posture of holding the blade 58 in the holder 59 can be changed so that another part of the blade 58b that is not deteriorated is exposed. it can. Thus, although not shown in FIG. 3, the sticking device 40 further includes a support member 56 and a cutter 57.

[Embodiment of Peeling Device]
Subsequently, an embodiment of the peeling apparatus 70 will be described. As shown in FIG. 3, the peeling device 70 is disposed on the downstream side of the sticking device 40, and peels the release sheet 22 of the double-sided tape 20 stuck to the battery cell 2 by the sticking device 40. It is a device. The peeling device 70 includes a nozzle (first nozzle) 71 and a nozzle (second nozzle) 72, a rectifying member (first rectifying member) 73 and a rectifying member (second rectifying member) 74, recovery members 75 and 76, Drive units 77 and 78. Further, as described above, the peeling device 70 includes the conveyance unit (arrangement unit) 61 and the control unit 62 that are common to the sticking device 40.

  FIG. 9 is a plan view of the peeling apparatus shown in FIG. 10 is a front view of the rectifying member shown in FIG. As shown in FIGS. 3, 9, and 10, the transport unit 61 transports the battery cells 2 along the transport path T, thereby disposing the battery cells 2 at the peeling position P where the release sheet 22 is peeled off. The nozzles 71 and 72 are arranged so as to face each other in the direction intersecting the transport path T (here, the X-axis direction). The rectifying members 73 and 74 are also arranged so as to face each other in the same direction. The nozzle 71 and the rectifying member 73 are disposed on one side with respect to the transport path T, and the nozzle 72 and the rectifying member 74 are disposed on the other side with respect to the transport path T.

  Here, the rectifying member 73 and the rectifying member 74 are connected to a driving unit 77 and a driving unit 78 such as an air cylinder, respectively, so as to approach each other along the direction intersecting the transport path T, or It is possible to move away from each other. The nozzle 71 is connected to the rectifying member 73 so as to be movable integrally with the rectifying member 73, and the nozzle 72 is connected to the rectifying member 74 so as to be movable integrally with the rectifying member 74. Yes. Thereby, the nozzles 71 and 72 and the rectifying members 73 and 74 are in the first direction (here, the X-axis direction) intersecting the outer surfaces 3a and 3b of the battery cell 2 in a state where the battery cell 2 is disposed at the peeling position P. ) With respect to the outer surfaces 3a and 3b can be adjusted.

  The nozzles 71 and 72 are connected to an air (gas) supply source. In the state where the battery cell 2 is disposed at the peeling position P, the nozzle 71 is disposed on the one end portion side of the outer surface 3a to which the double-sided tape 20 in the battery cell 2 is attached. And the nozzle 71 forms the gas flow F1 in 1st area | region R1 by ejecting air toward 1st area | region R1 on the outer surface 3a and the double-sided tape 20. FIG. On the other hand, the nozzle 72 is a surface opposite to the outer surface 3a in the battery cell 2 and is disposed on one end side of the outer surface 3b to which the double-sided tape 20 is attached. And the nozzle 72 forms the gas flow F2 in 2nd area | region R2 by ejecting gas toward 2nd area | region R2 on the outer surface 3b and the double-sided tape 20. FIG.

  In a state where the battery cell 2 is disposed at the peeling position P, the rectifying member 73 is disposed at the first position P1 facing the outer surface 3a through the double-sided tape 20 while being separated from the double-sided tape 20. Thereby, the rectification | straightening member 73 restrict | limits the flow-path width | variety of the gas flow F1 to the 1st direction which cross | intersects the outer surface 3a. On the other hand, the rectifying member 74 is disposed at the second position P2 facing the outer surface 3b through the double-sided tape 20 while being separated from the double-sided tape 20 in a state where the battery cell 2 is disposed at the peeling position P. The flow path width of the gas flow F2 is limited in the first direction.

  The rectifying members 73 and 74 will be described in detail. The rectifying member 73 has a flat plate-like main body portion (first main body portion) 81. The main body 81 includes a surface 81s. The surface 81s is a surface on the battery cell 2 side, that is, a surface facing the outer surface 3a when the battery cell 2 is disposed at the peeling position P. The main body 81 has a first end 81a and a second end 81b in the second direction along the gas flow F1 and the outer surface 3a (here, the Y axis direction and the direction along the transport path T), and the outer surface 3a. One end portion 81c and the other end portion 81d in the third direction (here, the Z-axis direction) that extends along the gas flow F1 are included.

  A plurality of convex portions 81p extending from the one end portion 81a to the other end portion 81b are formed on the surface 81s along the second direction. The convex portions 81p are separated from each other at a predetermined interval and are substantially parallel to each other. Thereby, the recessed part 81v is prescribed | regulated by the mutually adjacent convex part 81p. The interval between the convex portions 81p adjacent to each other (the width of the concave portion 81v) is larger than the protruding amount (the depth of the concave portion 81v) from the surface 81s of the convex portion 81p.

  The rectifying member 73 includes a wall portion (first wall portion) 83 projecting from the one end portion 81c and a wall portion 85 projecting from the other end portion 81d. The walls 83 and 85 are long plate-like shapes extending along the second direction. Thereby, the rectification member 73 is formed in a substantially U-shaped plate shape. The wall portion 83 faces the upper surface 3 c of the battery cell 2, and the wall portion 85 faces the bottom surface 3 d of the battery cell 2. The wall portion 83 is formed with a pair of recesses 83c in which the pair of terminals 4 of the battery cell 2 are disposed.

  The rectifying member 74 has a flat plate-like main body portion (second main body portion) 82. The main body portion 82 includes a surface 82s. The surface 82s is a surface on the battery cell 2 side, that is, a surface facing the outer surface 3b when the battery cell 2 is disposed at the peeling position P. The surface 82s is also a surface facing the surface 81s of the main body 81 of the rectifying member 73. The main body 82 is formed on one end 82a and the other end 82b in the second direction along the gas flow F2 and the outer surface 3b (here, the Y-axis direction and the direction along the transport path T), and the outer surface 3b. One end portion 82c and the other end portion 82d in a third direction (here, the Z-axis direction) that extends along the gas flow F2 are included.

  A plurality of convex portions 82p extending from the one end portion 82a to the other end portion 82b are formed on the surface 82s along the second direction. The convex portions 82p are separated from each other at a predetermined interval and are substantially parallel to each other. Thereby, the recessed part 82v is prescribed | regulated by the mutually adjacent convex part 82p. The interval between the adjacent convex portions 82p (the width of the concave portion 82v) is larger than the protruding amount (the depth of the concave portion 82v) from the surface 82s of the convex portion 82p.

  Further, the rectifying member 74 includes a wall portion (second wall portion) 84 protruding from the one end portion 82c and a wall portion 86 protruding from the other end portion 82d. The wall parts 84 and 86 are elongate plate shape extended along a 2nd direction. Thus, the rectifying member 74 is formed in a substantially U-shaped plate shape. The wall portion 84 faces the upper surface 3 c of the battery cell 2, and the wall portion 86 faces the bottom surface 3 d of the battery cell 2. The wall portion 84 is formed with a pair of recesses 84c in which the pair of terminals 4 of the battery cell 2 are disposed.

  When the main body portions 81 and 82 of the rectifying members 73 and 74 are close to the outer side surfaces 3a and 3b of the battery cell 2, the flow path of the air ejected from the nozzles 71 and 72 is changed to the main body portion 81 and the outer side surface 3a. In the first region R1 between and the second region R2 between the main body 82 and the outer surface 3b. Thereby, the flow velocity of the air ejected from the nozzles 71 and 72 is improved. As a result, the negative pressure generated in the release sheet 22 of the double-sided tape 20 facing the first region R1 and the release sheet 22 of the double-sided tape 20 facing the second region R2 can be increased (Venturi effect). Thus, the rectifying members 73 and 74 are used to increase the negative pressure by improving the flow velocity of air from the nozzles 71 and 72.

  The description of the peeling device 70 will be continued. The collection members 75 and 76 are used for collecting and holding the release sheet 22 peeled from the battery cell 2. The recovery member 75 is connected to the other end 81 b of the main body 81 of the rectifying member 73. Thereby, the collection member 75 can be moved integrally with the flow regulating member 73. The recovery member 75 includes a rectangular plate-shaped bottom surface portion 91, a rectangular annular side wall portion 93 erected on the bottom surface portion 91 so as to surround the bottom surface portion 91, and a guide portion 95 provided on the side wall portion 93. Have. A notch 93b is formed in a corner portion 93c connected to the other end portion 81b of the side wall portion 93. The release sheet 22 is introduced into the collection member 75 through the notch 93b.

  In addition, another notch 93f is formed in a corner portion 93d of the side wall portion 93 that faces the corner portion 93c. A plurality of holes 91 h are formed in the bottom surface portion 91. These notches 93f and hole portions 91h suppress the retention of the air by allowing the air that has reached the recovery member 75 via the first region R1 to escape.

  The guide portion 95 is provided on the inner surface of the side wall portion 93 on the surface facing the surface 81 s side of the main body portion 81. The guide portion 95 includes an inclined surface 95s that is inclined so as to intersect the gas flow F1. The guide portion 95 uses the inclined surface 95s to direct the release sheet 22 peeled by the gas flow F1 and introduced into the recovery member 75 toward the surface opposite to the surface on which the guide portion 95 is provided. To guide.

  On the other hand, the recovery member 76 is connected to the other end 82 b of the main body 82 of the rectifying member 74. Thereby, the collection member 76 can be moved integrally with the rectifying member 74. The recovery member 76 includes a rectangular plate-shaped bottom surface portion 92, a rectangular annular side wall portion 94 standing on the bottom surface portion 92 so as to surround the bottom surface portion 92, and a guide portion 96 provided on the side wall portion 94. Have. A notch 94b is formed in a corner portion 94c connected to the other end portion 82b of the side wall portion 94. The release sheet 22 is introduced into the recovery member 76 through the notch 94b.

  In addition, another notch 94f is formed in a corner portion 94d of the side wall portion 94 that faces the corner portion 94c. A plurality of holes 92 h are formed in the bottom surface portion 92. The notches 94f and the holes 92h allow the air that has reached the recovery member 76 through the second region R2 to escape, thereby suppressing the retention of the air.

  The guide portion 96 is provided on a surface of the inner surface of the side wall portion 94 that faces the surface 82 s of the main body portion 82. The guide portion 96 includes an inclined surface 96s that is inclined so as to intersect the gas flow F2. The guide portion 96 uses the inclined surface 96s to guide the release sheet 22 that is peeled off by the gas flow F2 and introduced into the recovery member 76 toward the surface opposite to the surface on which the guide portion 96 is provided. To do.

  As described above, the drive unit 77 drives the nozzle 71, the rectifying member 73, and the recovery member 75 along the first direction (here, the X-axis direction). The drive unit 78 drives the nozzle 72, the rectifying member 74, and the recovery member 76 along the first direction. In the peeling apparatus 70, the control unit 62 controls at least the conveying unit 61, the ejection of air from the nozzles 71 and 72, and the driving units 77 and 78.

  Then, an example of the peeling method of the peeling sheet 22 in the peeling apparatus 70 is demonstrated. This method is performed by the control unit 62 executing a process for controlling each unit of the peeling apparatus 70.

  In this method, first, as shown in FIG. 11A, the control unit 62 executes a process of placing the battery cell 2 at the peeling position P where the peeling sheet 22 is peeled in the peeling device 70. (Step S201). Here, the control part 62 drives the conveyance part (arrangement part) 61 in which the battery cell 2 is arranged, thereby moving the battery cell 2 side along the conveyance path T, and bringing the battery cell 2 to the peeling position P. Deploy. The peeling position P is a position in the direction along the transport path T (here, the Y-axis direction), and is a position where the entire battery cell 2 is located between the rectifying member 73 and the rectifying member 74.

  Subsequently, as illustrated in FIG. 11B, the control unit 62 controls the drive units 77 and 78 so that the rectifying member 73 and the rectifying member 74 are close to each other, thereby the rectifying member 73 and the rectifying member. The process (1st process) which clamps the battery cell 2 with 74 is performed (process S202).

  Subsequently, as illustrated in FIG. 12A, the control unit 62 controls the drive units 77 and 78 so that the rectifying member 73 and the rectifying member 74 are moved away from each other, whereby the rectifying member 73 is The process (2nd process) which arrange | positions to the 2nd position P2 while arrange | positioning to the position P1 is performed (process S203).

  The first position P1 is a position in the facing direction (here, the X-axis direction) of the rectifying member 73 and the rectifying member 74, and is a position where the surface 81s of the main body 81 and the release sheet 22 are separated by a predetermined distance. . The second position P2 is a position in the facing direction (here, the X-axis direction) of the rectifying member 73 and the rectifying member 74, and the position where the surface 82s of the main body 82 and the release sheet 22 are separated by a predetermined distance. It is. Furthermore, the predetermined distance is a distance by which a sufficient negative pressure can be applied to the release sheet 22 by restricting the air flow path width to improve the air flow rate, and between the double-sided tape 20 and the release sheet 22. Although it can set suitably according to various conditions, such as adhesive force, it is the range of 0.5 mm or more and 5 mm or less, for example.

  Subsequently, as illustrated in FIG. 12B, the control unit 62 performs a process (third process) for starting the ejection of gas from the nozzle 71 and the nozzle 72 (process S <b> 204). As a result, in the first region R1 on the outer surface 3a and the double-sided tape 20 (and the release sheet 22), an air gas flow F1 whose flow path width is limited by the rectifying member 73 is formed. Further, in the second region R2 on the outer surface 3b and the double-sided tape 20 (and the release sheet 22), an air gas flow F2 in which the flow path width is limited by the rectifying member 74 is formed.

  As a result, as shown in FIG. 12 (c), the release sheet 22 is peeled off by the negative pressure caused by the gas flows F1 and F2, and sent to the downstream side according to the gas flows F1 and F2. The release sheet 22 is collected by the collection members 75 and 76. Note that, as described above, here, the tip of the double-sided tape 20 protrudes from the tips of the outer surfaces 3a and 3b toward the nozzles 71 and 72. For this reason, when the ejection of air from the nozzles 71 and 72 is started, the release sheet 22 is suitably peeled so that the tip of the double-sided tape 20 is rolled.

[Operation and effect of sticking device]
As described above, the sticking device 40 includes the sticking pad 50. And in the sticking pad 50, the skirt part 52 which forms space part SP connected to the opening 51n of the main-body part 51 consists of an elastic body. For this reason, even when the battery cell 2 is deformed, the skirt portion 52 can be elastically deformed to closely adhere to the deformation. Therefore, in that state, if air from the opening 51n (opening 53n) is allowed to flow out, a sufficient positive pressure is applied to the double-sided tape 20 via the space SP, and the double-sided tape 20 is adhered to the battery cell 2. It becomes possible.

  Moreover, in the sticking pad 50, the skirt part 52 is formed so that it may spread as it leaves | separates from the bottom face 51s of the main-body part 51. As shown in FIG. For this reason, the skirt portion 52 is easily elastically deformed so as to follow the deformation of the outer shape (outer side surfaces 3a, 3b) of the battery cell 2.

  In addition, the sticking pad 50 includes a spacer portion 53 including a support surface 53s that is disposed in the space portion SP and faces the outside of the space portion SP. For this reason, when negative pressure is applied to the double-sided tape 20 by the inflow of air from the opening 51n (opening 53n), the double-sided tape 20 is supported by the support surface 53s of the spacer portion 53. Thereby, it is suppressed that the double-sided tape 20 is drawn into the space SP and wrinkles are generated.

  Further, in the sticking pad 50, the spacer portion 53 is provided with a through hole 53h that forms an opening 53n in the support surface 53s. A plurality of convex portions 53q are formed on the support surface 53s. Furthermore, the opening 53n communicates with the opening 51n through the through hole 53h, and the region between the convex portions 53q communicates with the opening 53n. For this reason, even in the state where the double-sided tape 20 is supported on the support surface 53s as described above, an air flow path is secured in the region between the convex portions 53q (the concave portion 53c).

[Operation and effect of peeling device]
As described above, the peeling device 70 peels the release sheet 22 from the double-sided tape 20 attached to the outer side surface 3a of the battery cell 2 using the negative pressure generated by the gas flow F1. More specifically, in the peeling device 70, the nozzle 71 ejects air from the one end side of the outer surface 3a toward the first region R1 on the double-sided tape 20, thereby causing gas to enter the first region R1. A flow F1 is formed.

  At this time, the flow regulating member 73 restricts the flow path width of the gas flow F1 in the first direction intersecting the outer surface 3a (that is, the release sheet 22). Thereby, the flow velocity of air in the first region R1 is improved, and the negative pressure on the release sheet 22 is increased. As a result, the release sheet 22 can be peeled using the negative pressure of the gas flow F1. Thus, in the peeling apparatus 70, since a blade-shaped member etc. are not used at the time of peeling of the peeling sheet 22, it can suppress that a damage | wound generate | occur | produces in the battery cell 2. FIG.

  Moreover, in the peeling apparatus 70, it arrange | positions at the one end part side of the outer surface 3b of the battery cell 2, the nozzle 72 which forms the gas flow F2 in 2nd area | region R2 on the outer surface 3b and the double-sided tape 20, and a 1st direction And a rectifying member 74 for limiting the flow path width of the gas flow F2. For this reason, it is possible to peel the release sheet 22 on both surfaces of the battery cell 2 while suppressing the generation of scratches on the battery cell 2.

  In the peeling device 70, a plurality of convex portions 81p and 82p extending in the second direction along the gas flows F1 and F2 are formed on the surfaces 81s and 82s on the battery cell 2 side of the rectifying members 73 and 74. Yes. For this reason, even if the peeled release sheet 22 moves so as to stick to the surfaces 81s and 82s of the flow regulating members 73 and 74, as a result of being supported by the convex portions 81p and 82p, the region between the convex portions 81p and 82p ( Air flow paths are secured in the recesses 81v, 82v). For this reason, peeling of the release sheet 22 and feeding to the downstream are hardly hindered.

  Moreover, in the peeling apparatus 70, the rectifying members 73 and 74 are in the third direction along the main body portions 81 and 82 facing the outer surfaces 3a and 3b and the gas flows F1 and F2 along the outer surfaces 3a and 3b. Wall portions 83 and 84 projecting from the one end portions 81c and 82c of the main body portions 81 and 82 toward the outer side surfaces 3a and 3b. For this reason, it is possible to suppress the air from the nozzles 71 and 72 from diffusing in the third direction.

  Furthermore, in the peeling apparatus 70, the drive parts 77 and 78 which drive the rectifying members 73 and 74 along the first direction, the ejection of gas from the nozzles 71 and 72, and the control which controls the drive parts 77 and 78. And a unit 62. And the control part 62 controls the drive parts 77 and 78 by controlling the drive parts 77 and 78 so that the rectification member 73 and the rectification member 74 may mutually approach prior to peeling of the peeling sheet 22 using gas flow F1, F2. And the process which clamps the battery cell 2 with the rectification | straightening member 74 is performed. For this reason, relative positioning of the rectification members 73 and 74 and the battery cell 2 is made. Therefore, when performing the peeling process of the peeling sheet 22 with respect to the plurality of battery cells 2, the flow widths of the gas flows F1 and F2 can be kept constant without changing the driving amount of the driving units 77 and 78. It becomes.

[Modification]
The above-mentioned sticking pad 50 and peeling device 70 explain one embodiment of the sticking pad and peeling device concerning the present invention. Therefore, the sticking pad and the peeling device according to the present invention are not limited to the sticking pad 50 and the peeling device 70 described above, and various modifications are possible.

[Modification example of adhesive pad]
For example, in the sticking pad 50, the skirt portion 52 may be divided into a plurality of portions along the bottom surface 51 s of the main body portion 51. In this case, the deformation amount of the outer shape of the battery cell 2 is shared by a plurality of portions of the skirt portion 52. For this reason, the skirt portion 52 can be elastically deformed so as to reliably follow the deformation of the outer shape of the battery cell 2.

  In particular, the skirt portion 52 may be divided into a portion on one side and a portion on the other side from the longitudinal center of the main body portion 51 and the bottom surface 51s. In this case, the skirt portion 52 can be elastically deformed so as to reliably follow the deformation of the outer shape of the battery cell 2 with relatively few parts.

  In these cases, each of the plurality of portions of the skirt portion 52 may be formed in an annular shape to form the space portion SP therein. In that case, a plurality of openings 51n for inflow and outflow of air can be formed on the bottom surface 51s so as to communicate with the respective space portions SP. In that case, the same number of spacers 53 as the skirts 52 can be prepared and arranged in each space SP.

[Modification of peeling device]
On the other hand, the peeling device 70 can include a plurality of nozzles 71 and a plurality of nozzles 72. In this case, for example, the plurality of nozzles 71 are dispersed and arranged in the height direction of the battery cell 2, that is, in the direction from the one end 81c of the main body 81 to the other end 81d (here, the Z-axis direction). Can do. The same applies to the plurality of nozzles 72. In this case, the release sheet 22 can be reliably peeled from the double-sided tape 20 attached to the relatively wide outer surfaces 3a and 3b by the gas flow from the plurality of nozzles 71 and 72. .

  In this case, the amount of air ejection, the air flow velocity, the timing of air ejection, and the like may be different for each of the plurality of nozzles 71. The same applies to the plurality of nozzles 72 (the same applies hereinafter). As an example, the air ejection amount and flow velocity of the nozzle 71 on the center side in the height direction of the battery cell 2 may be made larger than those of the other nozzles 71. As another example, the timing of air ejection from the nozzle 71 on the center side in the height direction of the battery cell 2 may be made earlier than the timing of air ejection from the other nozzles.

  Further, regarding the processing of the control unit 62 in the peeling device 70, the control unit 62 moves the rectifying member 73 and the rectifying member 74 away from each other after the process of starting the ejection of air from the nozzles 71 and 72 (third process). As described above, a process (fourth process) for controlling the drive units 77 and 78 may be further executed. In this case, by separating the rectifying members 73 and 74 from each other in a state where the already peeled part of the release sheet 22 is stuck to the rectifying members 73 and 74 by negative pressure, the separation portion of the release sheet 22 and the double-sided tape 20 are separated from each other. The interval can be increased.

  2 ... Battery cell, 3a ... Outer surface (first outer surface), 3b ... Outer surface (second outer surface), 20 ... Double-sided tape, 22 ... Release sheet, 50 ... Adhesion pad, 51 ... Main body, 51e ... Peripheral portion, 51s ... bottom surface, 51n ... opening (first opening), 52 ... skirt portion, 53 ... spacer portion, 53s ... support surface, 53h ... through hole, 53n ... opening (second opening), 53q ... convex portion, SP ... Space part 61 ... Conveying part (arrangement part) 62 ... Control part 70 ... Peeling device 71 ... Nozzle (first nozzle) 72 ... Nozzle (second nozzle) 73 ... Rectification member (first rectification) Member), 74 ... rectifying member (second rectifying member), 77, 78 ... driving portion, 81 ... main body portion (first main body portion), 81a ... one end portion (end portion), 81p ... convex portion, 81s ... surface, 82 ... Main body (second main body), 82a ... One end (end), 82s ... Surface, 82p ... Convex , 83 ... Wall part (first wall part), 84 ... Wall part (second wall part), F1, F2 ... Gas flow, P ... Peeling position, R1 ... First region, R2 ... Second region, P1 ... First 1 position, P2 ... 2nd position.

Claims (6)

A peeling device for peeling a release sheet of a double-sided tape attached to a battery cell,
An arrangement part for arranging the battery cell at a peeling position for peeling the release sheet;
In the state where the battery cell is disposed at the peeling position, the battery cell is disposed on one end side of the first outer surface to which the double-sided tape is attached, and the first outer surface and the second tape on the double-sided tape. A first nozzle for forming a gas flow in the first region by ejecting gas toward the region;
In the state where the battery cell is disposed at the peeling position, the battery cell is disposed at a first position facing the first outer surface via the double-sided tape while being separated from the double-sided tape, thereby the first outer surface. A first rectifying member that restricts the flow width of the gas flow in a first direction intersecting
A peeling apparatus comprising: It is a surface opposite to the first outer surface of the battery cell, and is disposed on one end side of the second outer surface to which the double-sided tape is attached, and the second outer surface and the second on the double-sided tape. A second nozzle that forms a gas flow in the second region by ejecting gas toward the region;
A second rectifying member that restricts the flow width of the gas flow in the first direction by being disposed at a second position facing the second outer surface through the double-sided tape while being separated from the double-sided tape; Further comprising
The peeling apparatus according to claim 1. On the surface on the battery cell side in the first rectifying member and the second rectifying member, a plurality of convex portions extending in the second direction along the gas flow are formed,
The peeling apparatus according to claim 2. The first rectifying member includes a first main body portion opposed to the first outer surface and an end portion of the first main body portion in a third direction along the first outer surface and intersecting the gas flow. A first wall portion projecting to the outer surface side,
The second rectifying member includes a second main body portion facing the second outer surface, a second wall portion projecting from the end of the second main body portion in the third direction to the second outer surface side, including,
The peeling apparatus according to claim 2 or 3. A drive unit that drives the first rectifying member and the second rectifying member along the first direction;
A control unit that controls ejection of gas from the first nozzle and the second nozzle and the driving unit;
The controller is
A first process of sandwiching the battery cell between the first rectifying member and the second rectifying member by controlling the driving unit so that the first rectifying member and the second rectifying member are close to each other;
After the first treatment, the first rectifying member is disposed at the first position by controlling the driving unit so that the first rectifying member and the second rectifying member are moved away from each other, and the second rectifying member is disposed. A second process of placing a member in the second position;
After the second process, a third process for starting gas ejection from the first nozzle and the second nozzle is performed.
The peeling apparatus as described in any one of Claims 2-4. The controller further performs a fourth process of controlling the driving unit so that the first rectifying member and the second rectifying member are moved away from each other after the third process.
The peeling apparatus according to claim 5.

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