Electrode base material cutting device
By setting a movable cutting part in the electrode base material cutting device to process the normal electrode and defective electrodes separately, the problem of mixing defective electrodes and normal electrodes in the prior art is solved, and the defective electrodes are separately recovered and removed, thereby improving the battery Quality and efficiency of assembly.
Patent Information
- Application Number
- CN202380023570.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-08-31
- Filing Date
- 2023-08-28
- Publication Date
- 2024-12-27
AI Technical Summary
It is difficult for existing electrode substrate cutting devices to remove and recover defective parts in the electrode substrate separately during the cutting process, resulting in the defective electrode mixing with the normal electrode, affecting the quality of the unit cell.
An electrode substrate cutting device is designed. By setting a movable cutting part on the travel path, the cutting positions of the normal electrode and the defective electrode are respectively set to ensure that the normal electrode is discharged to the outside after cutting, and the defective electrode is stored in recycling. department.
The individual removal and recovery of defective electrodes during the cutting process is achieved, preventing them from entering the unit cell stacking, and improving the quality and efficiency of battery assembly.
Smart Images
Figure CN119212936A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an electrode substrate cutting device, and in particular, to an electrode substrate cutting device capable of removing and recovering defective electrodes including defective parts while cutting an electrode substrate into a plurality of unit electrodes.
[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0109800 filed on August 31, 2022, the disclosure of which is incorporated herein by reference in its entirety. Background Art
[0003] Figure 1 is a structural diagram of a conventional electrode substrate cutting device for cutting an electrode substrate 1 into unit electrodes 10, Figure 2 It is a schematic diagram showing the process of inspecting the unit cell 90 .
[0004] The battery cell includes an electrode assembly and a case protecting the electrode assembly.
[0005] Reference Figure 1 and Figure 2 The electrode assembly includes a plurality of unit cells 90, wherein each unit cell 90 includes a negative electrode 10a, a separator 15, and a positive electrode 10b, and has a laminated structure such that the separator 15 is located between the negative electrode 10a and the positive electrode 10b. In addition, the unit cell 90 may include a mono-cell or a half-cell.
[0006] The positive electrode 10 b and the negative electrode 10 a used in the unit cell 90 are manufactured separately by cutting the electrode substrate 1 coated with the positive electrode active material or the negative electrode active material into a plurality of unit electrodes 10 .
[0007] In addition, hereinafter, for convenience of explanation, the positive electrode 10 b and the negative electrode 10 a constituting the unit cell are collectively referred to as a unit electrode 10 .
[0008] Reference Figure 1 The conventional electrode substrate cutting device includes a conveying roller 20 , a defect detection sensor 30 , a cutting part 40 , an electrode discharge part 50 , and an electrode storage part 60 .
[0009] The electrode base material 1 is advanced toward the cutting part 40 along the plurality of conveying rollers 20. The defect detection sensor 30 is provided on the path MD along which the electrode base material 1 advances toward the cutting part 40. The defect detection sensor 30 detects a defective portion of the advancing electrode base material 1.
[0010] In the cutting part 40, the electrode substrate 1 is cut into a plurality of unit electrodes 10 satisfying the specifications of the battery cell. The cutting part 40 includes a pair of cutting members 41, 42, wherein the pair of cutting members 41, 42 cut the electrode substrate 1 while moving in directions approaching each other, and move in directions away from each other after the cutting of the electrode substrate 1 is completed.
[0011] The cutting unit 40 is installed at the front end of the electrode discharge unit 50. The electrode discharge unit 50 is provided to discharge the unit electrodes 10 cut at the cutting unit 40 to the electrode storage unit 60.
[0012] In this way, the cutting portion 40 has a structure in contact with the electrode discharge portion 50 , whereby even if the defect detection sensor 30 detects a defect existing in the electrode substrate 1 , it is difficult to remove only the defective portion 9 of the electrode substrate 1 alone in the cutting process of the electrode substrate 1 .
[0013] In this structure, the electrode discharge part 50 discharges the defective electrode having the defective portion and the normal electrode having no defective portion in the unit electrode 10 into the electrode storage part 60 together.
[0014] As a result, the defective electrodes are mixed with the normal electrodes to be supplied to the assembly process of the unit battery 90. When the assembly of the unit battery 90 is completed, the unit battery 90 is inspected in the visual inspection part 70 whether it is normal or defective.
[0015] Furthermore, if the unit cell 90 is determined to be normal in the visual inspection section 70 , the normal unit cell 90 a is conveyed to the normal section 81 . Otherwise, if the unit cell 90 is determined to be defective in the visual inspection section 70 , the defective unit cell 90 b is conveyed to the defective section 82 .
[0016] In this case, if the defective portion 9 exists in the negative electrode 10 a and / or the positive electrode 10 b constituting the unit cell 90 b , the visual inspection section 70 determines that the relevant unit cell is defective.
[0017] For example, even if the defective portion 9 exists only in the negative electrode 10a, since the associated unit cell 90b is determined to be defective, the good positive electrode 10b and the separator 15 are unnecessarily lost.
[0018] Therefore, there is a need for a technology of previously checking whether a unit electrode (positive electrode or negative electrode) supplied to a unit cell stacking process is defective and removing and recovering the defective electrode. Summary of the invention
[0019] Technical issues
[0020] In order to solve such a problem, the present invention is intended to provide an electrode base material cutting device which can remove defective electrodes including defective portions among the unit electrodes while cutting the electrode base material into unit electrodes.
[0021] Furthermore, the present invention aims to provide an electrode base material cutting apparatus capable of collecting only normal electrodes among unit electrodes to supply them to the next process.
[0022] Furthermore, the present invention is directed to providing an electrode substrate cutting device capable of collecting and recovering only defective electrodes.
[0023] Technical Solution
[0024] In order to solve the above-mentioned problems, an electrode substrate cutting device according to an example of the present invention includes: a traveling portion, which guides the movement of the electrode substrate along a traveling path; a defect detection portion, which is arranged on the traveling path and is arranged to detect a defective portion of the electrode substrate; a cutting portion, which is arranged to cut the electrode substrate into a plurality of unit electrodes, which is arranged to be movable along the traveling path, and which is arranged so that a good cutting position for cutting a normal electrode among the plurality of unit electrodes is different from a defective cutting position for cutting a defective electrode including the defective portion; an electrode discharge portion, which is arranged to discharge the normal electrode cut at the good cutting position to the outside; and a defect recovery portion, which stores the defective electrode cut at the defective cutting position therein.
[0025] Beneficial Effects
[0026] As discussed above, an example of the present invention relates to an electrode substrate cutting device having the following effects.
[0027] In the process of cutting the electrode substrate into a plurality of unit electrodes, defective electrodes including defective portions among the unit electrodes may be removed based on defect detection information from the defect detection unit.
[0028] Furthermore, by providing a cutting portion movable along the travel path of the electrode substrate, a good cutting position for cutting a normal electrode among a plurality of unit electrodes and a defective cutting position for cutting a defective electrode including a defective portion can be set differently.
[0029] In this structure, the normal electrode after being cut at the good cutting position can be discharged to the electrode discharge part, and the defective electrode after being cut at the defective cutting position can be discharged to the defect recovery part.
[0030] Therefore, only normal electrodes among the plurality of unit electrodes may be collected and supplied to the next process, and only defective electrodes may be individually collected and recycled.
[0031] Furthermore, by removing the defective electrode in advance before being supplied to the unit cell manufacturing process, it is possible to prevent the defective electrode from being determined as defective after being stacked in the form of a unit cell. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 FIG. 1 is a diagram showing the structure of a conventional electrode substrate cutting device for cutting an electrode substrate into unit electrodes.
[0033] Figure 2 It is a schematic diagram showing the process of inspecting a unit cell.
[0034] Figure 3 : is a schematic configuration diagram of an electrode substrate cutting device according to one example of the present invention.
[0035] Figure 4 It is a schematic diagram for explaining normal electrodes and defective electrodes among a plurality of unit electrodes.
[0036] Figure 5 It is a schematic stereoscopic diagram showing a defect recovery portion at a defective cutting position.
[0037] Figures 6 to 8 It is a schematic diagram for explaining an operation state of the electrode base material cutting device at a defective cutting position. DETAILED DESCRIPTION
[0038] Hereinafter, an electrode base material cutting apparatus according to one example of the present invention will be described with reference to the accompanying drawings.
[0039] Furthermore, regardless of reference numerals, the same or corresponding components are given the same or similar reference numerals, repeated descriptions thereof will be omitted, and the size and shape of each component shown may be exaggerated or reduced for convenience of explanation.
[0040] Figure 3 is a schematic structural diagram of an electrode substrate cutting device according to an example of the present invention, Figure 4 is a schematic diagram for explaining normal electrodes and defective electrodes among a plurality of unit electrodes. Figure 5 It is a schematic stereoscopic diagram showing a defect recovery portion at a defective cutting position.
[0041] also, Figure 3 The diagram illustrates a state where the cutting section 130 is located at the good-product cutting position P1.
[0042] The electrode base material cutting device 100 according to one example of the present invention is a device for cutting an electrode base material 1 that is traveling in a traveling direction MD1 into a plurality of unit electrodes A1 and A2.
[0043] Each unit electrode A1, A2 may be cut to have a predetermined length L1, L2 along the traveling direction MD1. For example, all the unit electrodes A1, A2 may be cut to have the same length L1, L2. In addition, the normal electrode among the unit electrodes A1 and the defective electrode including the defective portion 9 among the unit electrodes A2 may be cut to have the same length.
[0044] In addition, the electrode substrate cutting device 100 is configured to separate and collect normal electrodes 10 that are good products and defective electrodes 13 that include defective portions 9 from among the plurality of unit electrodes A1, A2 by detecting defective portions 9 of the traveling electrode substrate 1. In addition, the normal electrodes 10 may be electrodes that do not include defective portions 9.
[0045] Herein, the electrode substrate 1 may be a positive electrode substrate or a negative electrode substrate. In addition, each of the unit electrodes A1 and A2 may include a coating portion 11 and an uncoated portion 12, and the unit electrodes A1 and A2 may be determined as a negative electrode or a positive electrode according to the material of the coating portion 11.
[0046] An electrode substrate cutting device 100 according to an example of the present invention includes: a traveling portion 100 that guides the traveling of an electrode substrate along a traveling path; and a defect detection portion 120 that is disposed on the traveling path and configured to detect a defective portion 9 of the traveling electrode substrate 1 .
[0047] The traveling portion 110 includes a plurality of roller members 111. The plurality of roller members may be spaced apart along a traveling path of the electrode substrate 1, and the traveling portion 110 may be provided in a roll-to-roll manner.
[0048] In addition, the defect detection unit 120 may be configured to detect the defective portion 9 in the electrode substrate 1 in a scanning manner or a visual inspection manner. For example, the defect detection unit 120 may include one or more visual cameras.
[0049] Figures 6 to 8 It is a schematic diagram for explaining an operation state of the electrode base material cutting device at a defective cutting position.
[0050] The electrode base material cutting device 100 includes a cutting portion 130 configured to cut the electrode base material 1 into a plurality of unit electrodes A1 , A2 and configured to be movable along a travel path.
[0051] The cutting part 130 is arranged so that a good cutting position P1 for cutting a normal electrode 10 among a plurality of unit electrodes A1 and A2 and a defective cutting position P2 for cutting a defective electrode including a defective portion are different in the travel path. The cutting part 130 is arranged to be able to reciprocate between the good cutting position P1 and the defective cutting position P2.
[0052] In this case, when the cutting part 130 is located at the good cutting position P1 , the cutting part 130 cuts the electrode substrate 1 into normal electrodes 10 , and when the cutting part 130 is located at the defective cutting position P2 , the cutting part 130 cuts the electrode substrate 1 into defective electrodes 13 .
[0053] Furthermore, the electrode substrate cutting device 100 includes an electrode discharge unit 180 configured to discharge the normal electrode 10 cut at the good cutting position P1 to the outside, and a defect recovery unit 170 in which the defective electrode 13 cut at the defective cutting position P2 is stored.
[0054] In addition, the cutting part 130 includes a pair of cutting members 131, 132 provided to cut the electrode base material 1. The pair of cutting members 131, 132 may be provided to be movable to a good cutting position P1 and a defective cutting position P2.
[0055] The cutting portion 130 has an entry end 130 a into which the electrode substrate 1 is entered, and a discharge end 130 b from which the unit electrodes cut by the pair of cutting members 131 and 132 are discharged.
[0056] Furthermore, the electrode discharge portion 180 is located at the discharge end 130 b of the cutting portion 130 , and is provided to discharge the normal electrode 10 cut at the good product cutting position P1 to the outside.
[0057] In addition, the electrode discharge portion 180 has an entry end 180a for the normal electrode 10 to enter, and a discharge end 180b for the entered normal electrode 10 to be discharged to the outside. In this case, the electrode discharge portion 180 is arranged so that the entry end 180a faces the discharge end 130b of the cutting portion 130. In addition, since the cutting portion 130 is arranged to be movable, the gap between the entry end 180a of the electrode discharge portion 180 and the discharge end 130b of the cutting portion 130 can be adjusted.
[0058] When the cutting part 130 moves from the good product cutting position P1 to the defective cutting position P2 , the cutting part 130 may be disposed to move in a direction away from the electrode discharge part 180 .
[0059] Reference Figure 3 , the gap between the entrance end 180a of the electrode discharge portion 180 and the discharge end 130b of the cutting portion 130 can be minimized at the good product cutting position P1, and referring to Figure 6 , a gap between the entrance end 180a of the electrode discharge portion 180 and the discharge end 130b of the cutting portion 130 may be maximized at the defective cutting position P2.
[0060] In this structure, the reference Figure 3The cutting part 130 and the electrode discharge part 180 are arranged to be connected at the good product cutting position P1 , so that the normal electrode 10 cut at the good product cutting position P1 is transported to the electrode discharge part 180 .
[0061] In addition, the electrode discharge part 180 may include a pair of discharge rollers 181 , 182 for guiding the travel of the normal electrode 10 ; and an electrode storage part 185 storing the normal electrode 10 passing through the pair of discharge rollers 181 , 182 .
[0062] In addition, refer to Figures 6 to 8 The cutting part 130 and the electrode discharge part 180 are set to be disconnected at the defective cutting position P2, so that the defective electrode 13 cut at the defective cutting position P2 is not transported to the electrode discharge part 180.
[0063] Furthermore, the electrode base material cutting apparatus 100 includes a defect recovery part 170 in which the defective electrode 13 cut at the defective cutting position P2 is stored.
[0064] In this structure, the normal electrode 10 cut at the cutting section 130 is transported to the electrode discharge section 180 and then stored in the electrode storage section 185, and the defective electrode 13 cut at the cutting section 130 is stored in the defect recovery section 170, so that the normal electrode 10 and the defective electrode 13 can be recovered separately.
[0065] Reference Figure 5 When the cutting part 130 moves to the defective cutting position P2, the defective recovery part 170 may be disposed to be exposed to the space between the cutting part 130 and the electrode discharge part 180 at the defective cutting position P2. At this time, the defective electrode 13 stored in the defective recovery part 170 can be collected outside the device 100.
[0066] In addition, the cutting part 130 may include a pair of cutting members 131 , 132 , and a rear end roller part 160 disposed between the pair of cutting members 131 , 132 and the electrode discharge part 180 .
[0067] In this case, when the cutting part 130 is located at the good cutting position P1, the rear end roller part 160 is configured to push the normal electrode 10 to the electrode discharge part 180 at the good cutting position P1. That is, at the good cutting position P1, the normal electrode is conveyed from the cutting part 130 to the electrode discharge part 180, and the cutting part 130 and the electrode discharge part 180 are kept connected.
[0068] In addition, when the cutting part 130 is located at the defective cutting position P2, the rear end roller part 160 may be configured to push the defective electrode to the defect recovery part 170 at the defective cutting position P2. That is, at the defective cutting position P2, the defective electrode 13 is not conveyed from the cutting part 130 to the electrode discharge part 180, and the cutting part 130 and the electrode discharge part 180 remain disconnected.
[0069] The defect recovery part 170 may be provided at a position where the defective electrode 13 falls through the rear end roller part 160 and is thus stored. The defect recovery part 170 may be provided in the form of a box with a top opened.
[0070] Furthermore, the cutting portion 130 may include a position adjusting portion 140 that adjusts the positions of the pair of cutting members 131 , 132 along the travel path.
[0071] The position adjustment unit 140 may adjust the positions of the pair of cutting members 131 and 132 so that the pair of cutting members 131 and 132 are located at the good cutting position P1 or the defective cutting position P2 .
[0072] The position adjusting portion 140 may include a rail 141 and a body portion 143 movably disposed on the rail 141 and on which a pair of cutting members 131 , 132 are mounted.
[0073] In addition, the main body 143 may be provided with a rear end roller portion 160, and may be configured so that the pair of cutting members 131, 132 and the rear end roller portion 160 move integrally along the rail 141. That is, when the cutting portion 130 moves by the position adjustment portion 140, the pair of cutting members 131, 132 and the rear end roller portion 160 respectively mounted on the main body 143 may move integrally with the main body 143.
[0074] In addition, the rail 141 may be connected to the electrode discharge part 180, and the rail 141 may be provided at the bottom of the travel path.
[0075] In addition, the main body 143 may be movably mounted on the rail 141, and the main body 143 may be connected to the main body driving part 145. The main body driving part 145 provides a driving force to the main body 143 so that the main body 143 moves along the rail 141. For example, the main body driving part 145 may include a motor capable of forward and reverse rotation.
[0076] In addition, the electrode substrate cutting apparatus 100 may include a control part 190 that adjusts the position of the cutting part 130 on the travel path based on the detection information from the defect detection part 120 .
[0077] Reference Figures 6 to 8, the control section 190 may be configured so that when a defective portion 9 is detected in the electrode substrate 1 , the cutting section 130 is moved to the defective cutting position P2 and then the defective electrode 13 is cut from the electrode substrate 1 .
[0078] Reference Figure 3 The control unit 190 may be configured such that when the defective electrode 13 is removed from the electrode substrate 1 , the cutting unit 130 is moved to the good-quality cutting position P1 and then the normal electrode 10 is cut from the electrode substrate 1 .
[0079] The defect detection part 120 may be provided separately from the entrance end 130a of the cutting part 130. When the defect detection part 120 detects the defective portion 9, the defect detection part 120 transmits a detection signal to the control part 190.
[0080] The control part 190 may calculate a time point at which a region including the defective portion 9 in the electrode base material 1 enters the cutting part 130 based on the detection position Ps of the defect detection part 120 and the traveling speed of the electrode base material 1 .
[0081] The control part 190 may obtain information related to the unit electrode A2 including the defective portion 9 based on the detection information of the defect detection part 120 .
[0082] Reference Figure 4 , the defective electrode 13 is a unit electrode including a defective portion 9 in the unit electrode A2, and the unit electrode A2 may be an area between a virtual first cutting line C1 to be cut into the unit electrode A2 and a virtual second cutting line C2 separated from the virtual first cutting line C1 to include the defective portion 9.
[0083] The information about the unit electrode A2 including the defect portion 9 may include position information of the virtual first cutting line C1 and position information of the virtual second cutting line C2. At this time, the gap between the first cutting line C1 and the second cutting line C2 may correspond to the length L2 of the unit electrode A2.
[0084] When a defective portion 9 is detected while the electrode substrate 1 is moving, the electrode substrate cutting device 100 can remove the defective electrode 13 including the defective portion 9 of the unit electrode A2 in the cutting process of cutting the electrode substrate 1 into multiple unit electrodes A1, A2, and then cut the normal electrode 10 of the unit electrode A1 again.
[0085] Reference Figures 3 to 6 The cutting portion 130 is configured to be reciprocally movable to connect or separate (disconnect) from the electrode discharge portion 180 .
[0086] The cutting unit 130 is connected to the electrode discharge unit 180 when it moves to the good-quality cutting position P1 , and at the good-quality cutting position P1 , the pair of cutting members 131 , 132 cuts the electrode base material 1 into normal electrodes 10 .
[0087] Furthermore, when the defective portion 9 is detected, the cutting section 130 moves to the defective cutting position P2 , and at the defective cutting position P2 , the pair of cutting members 131 , 132 cuts the electrode base material 1 into the defective electrode 13 .
[0088] In addition, the control part 190 may control the operation of the main body driving part 145 based on the detection information from the defect detection part 120 .
[0089] Reference Figure 3 and Figure 6 For example, by setting the position of the entrance end 180 a of the electrode discharge unit 180 as the reference position P0 , the control unit 190 may adjust the moving direction and moving distance of the cutting unit 130 through the position adjustment unit 140 .
[0090] Reference Figure 6 When cutting the defective electrode 13, the position adjustment unit 140 may move the main body 143 backward (in the opposite direction of the electrode substrate's travel direction) to be separated from the reference position P0 by a first distance D1. The first distance D1 is the interval between the good cutting position P1 and the defective cutting position P2.
[0091] In addition, after the defective electrode 13 is cut, the position adjusting part 140 may move the main body part 143 forward (in the traveling direction of the electrode substrate) toward the electrode discharge part 180 at a position separated from the electrode discharge part 180 by the first distance D1.
[0092] In addition, the pair of cutting members 131 , 132 may be installed on the body portion 143 to move in a direction perpendicular to the electrode substrate 1 .
[0093] In addition, the front roller portion 150 and the rear roller portion 160 may be each installed in the main body portion 143. In this case, the front roller portion 150 and the rear roller portion 160 are provided on both sides of the pair of cutting members 131, 132. The front roller portion 150 performs a function of guiding the travel of the electrode substrate 1 so that the electrode substrate 1 enters between the pair of cutting members 131, 132.
[0094] The front roller portion 150 may include a pair of roller members disposed above and below the electrode substrate 1 and configured to push the electrode substrate 1 in the traveling direction MD1 or the reverse traveling direction MD2. Herein, the roller members constituting the front roller portion 150 are referred to as front rollers 151, 152.
[0095] The rear end roller portion 160 may include a pair of roller members disposed above and below the electrode substrate 1 and configured to push the normal electrode 10 or the defective electrode 13 in the traveling direction MD1 or the reverse traveling direction MD2 of the electrode substrate 1. Herein, the roller members constituting the rear end roller portion 150 are referred to as rear end rollers 161, 162.
[0096] As described above, the rear end roller portion 160 is located between the pair of cutting members 131 and 132 and the electrode discharge portion 180. In addition, the rear end roller portion 160 may be provided between the pair of cutting members 131 and 132 and the defect recovery portion 170.
[0097] Reference Figure 3 The defect recovery unit 170 may be provided at the rear end (discharging end) of the rear end roller unit 160. The defect recovery unit 170 may be located at the bottom of the pair of rear end rollers 161 and 162 on the discharging end side.
[0098] The pair of discharge rollers 181, 182 of the electrode discharge part 180 may be disposed above and below the passing normal electrode 10, and are configured to push the normal electrode 10 in the traveling direction MD1 or the reverse traveling direction MD2 of the electrode substrate 1. In addition, the normal electrode 10 pushed out in the traveling direction MD1 by the pair of discharge rollers 181, 182 is stored in the electrode storage part 185.
[0099] The control unit 190 controls the travel unit 110 that guides the travel of the electrode substrate 1 , and the rotational directions and rotational speeds of the pair of front rollers 151 , 152 , the pair of rear rollers 161 , 162 , and the pair of discharge rollers 181 , 182 .
[0100] The control unit 190 may control the operation of the traveling unit 110 so that the front end 1a of the electrode substrate 1 is separated from the pair of cutting members 131 and 132 by the expected cutting lengths L1 and L2 based on the positions of the pair of cutting members 131 and 132. At this time, the expected cutting length may be the first length L1 of the normal electrode 10 or the second length L2 of the defective electrode 13, wherein the first length L1 and the second length L2 may also be set to be the same.
[0101] Figure 6 The operation of the cutting section moving from a good product cutting position to a defective cutting position is shown. Figure 7 The operation of the cutting section in which the cutting section cuts the electrode substrate at the defective cutting position is shown, and Figure 8 The operation of the rear end roller section discharging the defective electrode to the recovery section is shown.
[0102] When cutting the defective electrode 13 , the control part 190 may control operations of the traveling part 110 , the cutting part 130 , and the electrode discharge part 180 , respectively, as follows.
[0103] The control part 190 may reduce the rotation speed of the traveling part 110 based on the detection information of the defect detection part 120. The control part 190 may obtain information related to the defective electrode 13 including the defective portion 9 based on the detection information of the defect detection part 120.
[0104] At this time, when the cutting part 130 is located at the good cutting position P1, the control part 190 may allow cutting of the virtual first cutting line C1 for cutting the defective electrode 13. Thereafter, the control part 190 may move the main body 143 of the position adjustment part 140 so that the pair of cutting members 131 and 132 are positioned at the defective cutting position P2.
[0105] Reference Figure 6 The position adjustment portion 140 can move the main body portion 143 in a direction away from the electrode discharge portion 180 .
[0106] When the body 143 moves in the reverse traveling direction MD2 , the control unit 190 may move the electrode substrate 1 in the reverse traveling direction MD2 , and may control the operation of the traveling unit 110 so that the virtual second cutting line C2 of the electrode substrate 1 is located at the defective cutting position P2 .
[0107] Furthermore, the control unit 190 stops the pair of front rollers 151 and 152 and the pair of rear rollers 161 and 162 for a preset cutting time. At this time, the control unit 190 causes the pair of cutting members 131 and 132 to cut the electrode substrate 1 for a preset cutting time.
[0108] Reference Figure 7 , the pair of cutting members 131 , 132 move toward each other in the substrate vertical direction at the defect cutting position P2 , and cut the defective electrode 13 from the electrode substrate 1 .
[0109] Reference Figure 8 When the defective electrode 13 is cut from the electrode substrate 1, the pair of cutting members 131, 132 returns to the initial position. At the same time, the pair of rear end rollers 161, 162 rotates to push the defective electrode 13 in the traveling direction MD1. In this case, due to the pushing force of the pair of rear end rollers 161, 162, the defective electrode 13 is discharged from the pair of rear end rollers 161, 162 to the defect recovery unit 170 individually.
[0110] Thereafter, the electrode base material cutting device 100 is configured to perform a process of cutting the normal electrode 10 again after removing the defective electrode 13 from the electrode base material 1 .
[0111] When cutting the normal electrode 10 , the control unit 190 moves the pair of cutting members 131 , 132 to the good-quality cutting position P1 , and controls the operation of the traveling unit 110 and the cutting unit 130 to be able to cut the normal electrode 10 of the first length L1 from the electrode base material 1 .
[0112] The position of the pair of cutting members 131 and 132 may be moved from the defective cutting position P2 to the good product cutting position P1 by the position adjusting portion 140 .
[0113] The advancing section 110 may advance the electrode substrate 1 so that the front end 1a of the electrode substrate 1 enters the electrode discharge section 180 at the good product cutting position P1. In addition, the control section 190 stops the advancing section 110 when cutting the normal electrode 10, and stops the operation of the pair of discharge rollers 181, 182, the pair of front end rollers 151, 152, and the pair of rear end rollers 161, 162.
[0114] Furthermore, at the good-product cutting position P1 , the pair of cutting members 131 , 132 moves in a direction approaching each other. The pair of cutting members 131 , 132 cuts the normal region of the electrode base material 1 into the normal electrode 10 .
[0115] After the electrode substrate 1 is cut into the normal electrode 10, the pair of rear end rollers 161, 162 and the pair of discharge rollers 181, 182 rotate to push the normal electrode 10 in the traveling direction MD1. In this case, due to the urging force of the pair of discharge rollers 181, 182, the normal electrode 10 is discharged from the pair of discharge rollers 181, 182 to the electrode storage portion 185.
[0116] The normal electrode 10 discharged into the electrode storage part 185 may be manufactured into unit cells later.
[0117] For illustrative purposes, preferred examples of the present invention as described above have been disclosed, and those skilled in the art having ordinary knowledge of the present invention will be able to make various modifications, changes and additions within the spirit and scope of the present invention, and such modifications, changes and additions should be deemed to fall within the scope of the appended claims.
[0118] Industrial Applicability
[0119] According to an electrode substrate cutting device according to an example of the present invention, in the process of cutting the electrode substrate into a plurality of unit electrodes, defective electrodes including defective portions among the unit electrodes can be removed based on defect detection information of a defect detection unit.
Claims
1. An electrode substrate cutting device, comprising: A traveling portion, guiding the traveling of the electrode substrate along a traveling path; a defect detection unit disposed on the travel path and configured to detect a defective portion of the electrode substrate; a cutting section configured to cut the electrode substrate into a plurality of unit electrodes, configured to be movable along the travel path, and configured so that a good cutting position for cutting a normal electrode among the plurality of unit electrodes is different from a defective cutting position for cutting a defective electrode including the defective portion; An electrode discharge unit configured to discharge the normal electrode cut at the good product cutting position to the outside; as well as The defect recovery section stores the defective electrodes cut at the defective cutting position.
2. The electrode substrate cutting device according to claim 1, wherein The cutting part and the electrode discharge part are provided to be connected to each other so that the normal electrode cut at the good product cutting position is conveyed to the electrode discharge part.
3. The electrode substrate cutting device according to claim 2, wherein The cutting portion and the electrode discharge portion are provided to be disconnected from each other so that the defective electrode cut at the defective cutting position is not conveyed to the electrode discharge portion.
4. The electrode substrate cutting device according to claim 1, wherein The cutting portion is configured to move in a direction away from the electrode discharge portion when moving from the good product cutting position to the defective cutting position.
5. The electrode substrate cutting device according to claim 4, wherein At the defective cut position, the defect recovery portion is provided to be exposed to a space between the cut portion and the electrode discharge portion.
6. The electrode substrate cutting device according to claim 4, wherein The cutting portion includes a pair of cutting members, and a rear end roller portion provided between the pair of cutting members and the electrode discharge portion, and The rear end roller portion is provided to push the normal electrode into the electrode discharge portion at a good product cutting position.
7. The electrode substrate cutting device according to claim 6, wherein The rear end roller portion is configured to push the defective electrode into the defect recovery portion at the defective cutting position.
8. The electrode substrate cutting device according to claim 7, wherein The defect recovery portion is provided at a position where a defective electrode falls through the rear end roller portion and is thus stored.
9. The electrode substrate cutting device according to claim 6, wherein The cutting portion further includes a position adjusting portion that adjusts positions of the pair of cutting members along the travel path.
10. The electrode substrate cutting device according to claim 9, wherein The position adjustment portion includes a track; and A main body portion is movably coupled to the rail and has the pair of cutting members mounted thereon.
11. The electrode substrate cutting device according to claim 10, wherein The main body is provided with the rear end roller portion, and The pair of cutting members and the rear end roller portion move integrally along the rail.
12. The electrode substrate cutting device according to claim 1, wherein The electrode discharge portion includes a pair of discharge rollers for guiding the travel of the normal electrode; and an electrode storage portion storing the normal electrode passing through the pair of discharge rollers.
13. The electrode substrate cutting device according to claim 1, comprising: The control unit is configured to adjust the position of the cutting unit on the travel path based on the detection information from the defect detection unit.
14. The electrode substrate cutting device according to claim 13, wherein The control section is configured so that, when the defective portion is detected in the electrode base material, the cutting section is moved to the defective cutting position and then a defective electrode is cut from the electrode base material.
15. The electrode substrate cutting device according to claim 14, wherein The control section is configured so that, when a defective electrode is removed from the electrode base material, the cutting section is moved to the good-quality cutting position and then a normal electrode is cut from the electrode base material.