WO2023163469A1 - 전극리드 정렬 마스킹 장치 - Google Patents
전극리드 정렬 마스킹 장치 Download PDFInfo
- Publication number
- WO2023163469A1 WO2023163469A1 PCT/KR2023/002396 KR2023002396W WO2023163469A1 WO 2023163469 A1 WO2023163469 A1 WO 2023163469A1 KR 2023002396 W KR2023002396 W KR 2023002396W WO 2023163469 A1 WO2023163469 A1 WO 2023163469A1
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- WO
- WIPO (PCT)
- Prior art keywords
- alignment
- electrode lead
- masking
- jig
- bus bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
- H01M50/557—Plate-shaped terminals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/38—Conductors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to an electrode lead alignment masking device, and more particularly, to an electrode lead alignment masking device capable of aligning an electrode lead bent to a bus bar in an accurate position, significantly reducing a welding defect rate, and preventing damage to an electrode rib. It is about.
- a secondary battery in general, includes an anode, a cathode, and an electrolyte, and generates electrical energy using a chemical reaction.
- the use of secondary batteries is gradually increasing due to the advantage of being capable of charging and discharging.
- lithium secondary batteries have high energy density per unit weight, and thus are widely used as power sources for electronic communication devices or as driving sources for high-output hybrid vehicles and electric vehicles.
- lithium secondary batteries such as lithium ion batteries and lithium ion polymer batteries having high energy density, discharge voltage, and output stability is increasing.
- a plurality of battery cells are stacked inside a battery case of a secondary battery. Electrode tabs are formed to protrude from each of the plurality of battery cells, and electrode leads are welded to each electrode tab. In a bending process, the cathode lead and the cathode lead are bent so as to overlap the bus bar by a bending tool. In a welding process, which is a process subsequent to the bending process, the bent anode lead and cathode lead are welded to the bus bar in an overlapped state by a welding tool.
- the bent electrode leads are welded to the bus bar in a non-aligned state. Accordingly, even if the lengths of the plurality of electrode leads are uniformly unified, the welding length of the electrode leads may be changed, thereby increasing the welding defect rate.
- the overlapping length of the pair of electrode leads is shortened.
- the bonding strength of the welded portion is remarkably reduced as the actual welding section becomes shorter than the design welding section.
- the overlapping length of the pair of electrode leads becomes excessively long.
- the overlapped portion of the pair of electrode leads may be partially lifted or a gap may be opened. Accordingly, the bonding force of the welded portion may be weakened.
- welding sparks or spatters may increase the welding defect rate.
- the welding length of a pair of electrode leads in each bus bar may be different from each other, the actual welding length may deviate from the design required dimension, and the welding defect rate may increase.
- the present invention has been made to solve the above problems, and an object of the present invention is to provide an electrode lead alignment masking device capable of aligning electrode leads bent on a bus bar in an accurate position and significantly reducing a welding defect rate.
- An object of the present invention is to provide an electrode lead alignment masking device in which an actual welding length of an electrode lead can match a design welding length.
- An object of the present invention is to provide an electrode lead alignment masking device capable of preventing a reduction in the bonding area and bonding force of a welding part by preventing electrode leads from spreading outward in the width direction of a bus bar.
- An object of the present invention is to provide an electrode lead alignment masking device capable of preventing the overlapping portion of a pair of electrode leads from being lifted locally or from opening a gap.
- An object of the present invention is to provide an electrode lead alignment masking device capable of preventing damage to an electrode lead and an alignment jig.
- the electrode lead alignment masking device is: In the electrode lead alignment masking device for aligning the electrode leads bent to the bus bar in the electrode lead welding process, it is inserted into the slot between the bus bars a pair of alignment jigs for aligning the positions of the electrode leads; and a masking jig disposed between the pair of aligning jigs and surrounding a welding portion of the electrode lead.
- the pair of alignment jigs may be coupled to both sides of the masking jig in the width direction.
- the alignment jig may gather the electrode leads toward the bus bar while being inserted outside the electrode leads in the slots.
- the alignment jig may include an alignment body portion opposite to both sides of the masking jig; and an alignment rib extending from the alignment body, thinner than the alignment body, and aligning the electrode lead while being inserted into the slot.
- An alignment tapered portion may be formed inside the alignment rib in the thickness direction to gather the electrode leads toward the bus bar.
- a stepped portion may be formed below the alignment body portion to be spaced apart from the bending portion of the electrode lead, and a pressing surface of the masking jig may be disposed at a position lower than the stepped portion.
- the alignment jig may be formed in a rectangular panel shape.
- a welding space portion penetrating in the vertical direction may be formed inside the masking jig.
- the masking jig may be formed in a rectangular cylinder shape parallel to the longitudinal direction of the bus bar, and the welding space portion may be formed parallel to the longitudinal direction of the bus bar.
- the masking jig may compress the electrode lead to the bus bar.
- Electrode lead alignment masking device In the electrode lead alignment masking device for aligning the electrode leads bent to the bus bar in the electrode lead welding process, the electrode lead alignment masking device is inserted into the slot between the bus bars to align the position of the electrode lead a pair of alignment jigs; a masking jig disposed between the pair of alignment jigs, installed to surround a welded portion of the electrode lead, and movably coupled to the alignment jig; and at least two or more elastic members respectively installed on both sides of the masking jig to elastically support the pair of alignment jigs.
- the masking jig includes a masking body portion formed with a welding space portion penetrating in the vertical direction; and sliding guides disposed on both sides of the masking body and having sliding grooves formed with sliding grooves to which the alignment jigs are slidably coupled.
- the alignment jig may include an alignment body portion opposite to both sides of the masking jig; an alignment rib extending downward from the alignment body, thinner than the alignment body, and aligning the electrode lead as it is inserted into the slot; and a slider extending upward from the alignment body and slidably coupled to the sliding groove.
- the alignment rib may gather the electrode leads toward the bus bar while being inserted outside the electrode leads in the slots.
- An alignment tapered portion may be formed inside the alignment rib in the thickness direction to gather the electrode leads toward the bus bar.
- a thickness of the slider may be smaller than a thickness of the alignment body part.
- a movement limiting portion may be formed on an upper side of the alignment body portion to limit a movement distance of the alignment jig by being caught on a lower end portion of the sliding guide portion.
- the elastic member may be supported on an upper end of the alignment body and an upper end of the sliding groove.
- the elastic members may be respectively disposed on both sides of the alignment body in a longitudinal direction.
- a stepped portion may be formed below the alignment body portion to be spaced apart from the bending portion of the electrode lead, and a pressing surface of the masking jig may be disposed at a position lower than the stepped portion.
- the bent electrode leads are It can be welded to the exact location.
- the actual welding length of the electrode lead can match the design welding length.
- the welding length of the electrode lead in each bus bar can be uniform.
- the electrode leads are welded in a state where they are gathered on the bus bar, it is possible to prevent a reduction in the bonding area and bonding force of the welded part.
- the end of the bent electrode lead does not overlap with the bent portion of the opposite electrode lead, it is possible to prevent the overlapping portion of the pair of electrode leads from being lifted locally or from opening a gap. Accordingly, bonding strength of the welded portion may be increased.
- the alignment jig is movably coupled to the masking jig and is elastically supported by the elastic member, shocks between the alignment jig and the electrode lead can be buffered. Accordingly, it is possible to prevent damage to the alignment jig and the electrode lead.
- FIG. 1 is a plan view schematically showing a secondary battery module according to the present invention.
- FIG. 2 is a cross-sectional view schematically showing a state in which an electrode lead alignment masking device is disposed above a bus bar in a secondary battery module according to the present invention.
- FIG. 3 is a perspective view schematically illustrating an electrode lead alignment masking device according to a first embodiment of the present invention.
- FIG. 4 is an exploded perspective view schematically showing an electrode lead alignment masking device according to a first embodiment of the present invention.
- FIG. 5 is a front view schematically showing an electrode lead alignment masking device according to a first embodiment of the present invention.
- FIG. 6 is a diagram schematically showing a state in which the electrode lead alignment masking device according to the first embodiment of the present invention is positioned above the electrode lead.
- FIG. 7 is a view schematically showing a state in which the alignment rig of the electrode lead alignment masking device according to the first embodiment of the present invention is inserted into the slot to align the electrode leads.
- FIG. 8 is an exploded perspective view schematically illustrating an electrode lead alignment masking device according to a second embodiment of the present invention.
- FIG. 9 is a perspective view schematically illustrating an electrode lead alignment masking device according to a second embodiment of the present invention.
- FIG. 10 is a front view schematically showing an electrode lead alignment masking device according to a second embodiment of the present invention.
- FIG. 11 is a cross-sectional view schematically illustrating a state in which lines 11-11 are cut in the electrode lead alignment masking device of FIG. 10 .
- FIG. 12 is a cross-sectional view schematically illustrating a state in which the electrode lead alignment masking device of FIG. 11 cut lines 12-12 from the electrode lead.
- FIG. 13 is a cross-sectional view schematically illustrating a state in which the electrode lead alignment masking device of FIG. 11 cuts lines 13-13 from the electrode lead.
- FIG. 14 is a cross-sectional view schematically showing a state in which an electrode lead of a battery cell is inserted into a slot of a bus bar in a secondary battery module according to the present invention.
- 15 is a cross-sectional view schematically showing a state in which an electrode lead of a battery cell is bent to a bus bar in a secondary battery module according to the present invention.
- 16 is a cross-sectional view schematically showing a state in which the alignment masking device according to the present invention is located on the upper side of the bus bar.
- 17 is a cross-sectional view schematically illustrating a state in which an alignment jig of an alignment masking device according to the present invention is inserted into a slot between bus bars.
- FIG. 18 is a cross-sectional view schematically showing a state in which a stepped portion of an alignment jig of an alignment masking device according to the present invention presses a bent portion of an electrode lead.
- 19 is a cross-sectional view schematically showing a state in which the pressing surface portion of the masking jig of the alignment masking device according to the present invention presses the electrode lead.
- 20 is a view schematically showing a state in which electrode leads are welded to a bus bar through a welding space of a masking jig according to the present invention.
- the present invention is not limited to the embodiments disclosed below, and various changes may be applied and may be implemented in a variety of different forms. Only this embodiment is provided to complete the disclosure of the present invention and to fully inform those skilled in the art of the scope of the invention. Therefore, the present invention is not limited to the embodiments disclosed below, but all changes and equivalents included in the technical spirit and scope of the present invention as well as substitution or addition of the configuration of one embodiment and the configuration of another embodiment each other to substitutes.
- FIG. 1 is a plan view schematically showing a secondary battery module according to the present invention
- FIG. 2 is a cross-sectional view schematically showing a state in which an electrode lead alignment masking device is disposed above a bus bar in a secondary battery module according to the present invention.
- a plurality of battery cells 30 are stacked inside a case 10 .
- An electrode tab 31 protrudes from each battery cell 30 , and the electrode tab 31 is welded to the electrode lead 33 .
- the bus bar frame 20 is assembled to the battery cell stack (not shown).
- a plurality of bus bars 21 are arranged side by side. Slots 23 are respectively formed between the plurality of bus bars 21 in the bus bar frame 20 .
- the width of the slot 23 may be formed to be about 5 to 7 times the thickness of the electrode lead 33 .
- the electrode leads 33 are bent so as to come into close contact with the bus bars 21 using a bending tool (not shown).
- a pair of electrode leads 33 are bent in the width direction of the bus bar 21 and overlap each other.
- a welding process is performed.
- the electrode lead alignment masking device 100 welds the bent electrode lead 33 to the bus bar 21 while aligning it with the bus bar 21 . This will be explained in detail below.
- the electrode lead alignment masking device 100 aligns and masks the electrode lead 33 bent to the bus bar 21 of the secondary battery module 1 in the welding process of the electrode lead 33 ( It is a masking device. At this time, electrode leads 33 of the same polarity or electrode leads 33 of opposite polarities may be bent to the bus bar 21 . In addition, electrode leads 33 having the same polarity may be bent in some bus bars 21 , and electrode leads 33 having opposite polarities may be bent in the remaining bus bars 21 .
- FIG. 3 is a perspective view schematically showing an electrode lead alignment masking device according to a first embodiment of the present invention
- FIG. 4 is an exploded perspective view schematically showing an electrode lead alignment masking device according to a first embodiment of the present invention.
- 5 is a front view schematically showing an electrode lead alignment masking device according to the first embodiment of the present invention
- FIG. 6 is a front view showing the electrode lead alignment masking device according to the first embodiment of the present invention located above the electrode lead
- FIG. 7 is a view schematically showing a state in which the alignment rig of the electrode lead alignment masking device according to the first embodiment of the present invention is inserted into the slot to align the electrode leads.
- the electrode lead alignment masking device 100 includes a pair of alignment jigs 110 and masking jigs 120.
- the pair of alignment jigs 110 are inserted into the slots 23 on both sides of the bus bar 21 to align the positions of the pair of electrode leads 33.
- a pair of alignment jigs 110 gather the electrode leads 33 bent while being inserted into the slots 23 on both sides of the bus bar 21 in the width direction.
- the pair of electrode leads 33 may be aligned in close contact with both sides of the bus bar 21 in the width direction or slightly spaced apart from each other.
- the end of one electrode lead 33 has a length that is spaced apart from the bent portion 34 of the other electrode lead 33 by a predetermined distance.
- the masking jig 120 is coupled to the alignment jig 110 and is formed to surround the welding portion of the electrode lead 33 .
- the masking jig 120 shields the circumference of the welding area to prevent sparks or spatter from escaping from the welding area when the electrode lead 33 is welded to the bus bar 21 . Accordingly, it is possible to significantly reduce a welding defect rate by preventing spatter or sparks generated during welding from splashing on surrounding structures.
- a welding tool (welding tool: Since the electrode lead 33 is welded (not shown), the bent electrode lead 33 can be welded to the correct position of the bus bar 21 .
- the actual welding length of the electrode lead 33 may match the design welding length.
- the welding length means a length welded parallel to the length of the bus bar 21 in the width direction.
- the end of the bent electrode lead 33 does not overlap with the bent portion 34 bent in a round shape in the opposite electrode lead 33, the overlapped portion of the pair of electrode leads 33 is not locally lifted or gap can prevent it from happening. Accordingly, bonding strength of the welded portion may be increased.
- the welding length of the pair of electrode leads 33 in each bus bar 21 becomes uniform, the actual welding length matches the design required dimension, and the welding defect rate can be reduced.
- a pair of alignment jigs 110 are coupled to both sides of the masking jig 120 in the width direction.
- the pair of alignment jigs 110 may be welded or bonded to both sides of the masking jig 120 in the width direction, or coupled by fastening members such as screws or rivets. Accordingly, the electrode leads 33 may be aligned and welded while the alignment jig 110 and the masking jig 120 are raised and moved by a single moving device (not shown).
- the alignment jig 110 is inserted outside the electrode lead 33 in the slot 23 and gathers the electrode lead 33 toward the bus bar 21. At this time, outer sides of the pair of alignment jigs 110 in the thickness direction may contact or be spaced apart from the outer surfaces of the slots 23 . In addition, inner sides of the pair of alignment jigs 110 in the thickness direction may contact outer surfaces of the electrode leads 33 . Accordingly, when the alignment jig 110 descends, the pair of electrode leads 33 can be aligned while being gathered toward the bus bar 21 .
- the alignment jig 110 includes an alignment body 111 and an alignment rib 113 .
- the alignment body 111 is opposed to both sides of the masking jig 120 .
- the alignment body 111 may be fixed to both sides of the masking jig 120 in the width direction by welding or adhesive, or to both sides of the masking jig 120 in the width direction by fastening members such as screws or rivets.
- the alignment rib 113 extends downward from the alignment body portion 111 and is formed thinner than the thickness of the alignment body portion 111 .
- the alignment rib 113 aligns the electrode lead 33 while being inserted into the slot 23 .
- the aligning rib 113 may press the outer surface of the electrode lead 33 toward the bus bar 21 to bring the electrode lead 33 into close contact with the bus bar 21 or may align the electrode lead 33 at a fine distance from each other. Contact between the electrode lead 33 and the bus bar 21 may be determined according to the thickness of the alignment jig.
- An alignment tapered portion 114 is formed inside the alignment rib 113 in the thickness direction to gather the electrode leads 33 toward the bus bar 21.
- the alignment rib 113 gradually becomes thinner toward the lower side by the alignment taper portion 114 . Accordingly, the lower end of the alignment rib 113 is easily inserted between the outer surface of the electrode lead 33 and the outer surface of the slot 23, and as the alignment rib 113 descends, the electrode lead 33 is moved to the bus bar. (21) It can be aligned while pressing to the side.
- the aligning rib 113 is inserted into the slot 23, the end of the aligning rib 113 is caught in the bent portion 34 of the electrode lead 33, causing damage to the aligning rib 113 or the electrode lead 33. Or it can prevent damage.
- a stepped portion 115 may be formed below the alignment body portion 111 to be spaced apart from the bent portion 34 of the electrode lead 33 .
- the pressing surface portion 123 of the masking jig 120 is disposed at a lower position than the stepped portion 115 .
- the stepped portion 115 may be formed horizontally or slightly inclined to the pressing surface portion 123 . Accordingly, when the pressing surface 123 of the masking jig 120 presses the electrode lead 33, the bending portion 34 of the electrode lead 33 is spaced apart from the stepped portion 115 by a predetermined distance, so that the alignment body portion (111) can be prevented from pressing the bent portion 34 of the electrode lead 33. Furthermore, it is possible to prevent the electrode lead 33 or the electrode tab 31 from being bent or damaged by the pressing force of the alignment body 111 .
- the alignment jig 110 is formed in a rectangular panel shape.
- the length of the alignment jig 110 may be slightly shorter than the length of the slot 23 .
- the length of the alignment jig 110 may be equal to or slightly longer than the length of the electrode lead 33 .
- the alignment jig 110 may be formed in various shapes such as a sawtooth shape for aligning the electrode leads 33 by being inserted into the slot 23 and a plurality of bar shapes arranged in a row.
- a welding space 121 penetrating in the vertical direction is formed inside the masking jig 120.
- the welding tool may pass through the welding space 121 and weld the bent electrode lead 33 to the bus bar 21 .
- the welding tool may be a laser welding tool for welding the electrode lead 33 by irradiating a laser beam or a spot welding tool for welding the electrode lead 33 by applying a current.
- Various types of welding may be applied according to the types of materials of the electrode lead 33 and the bus bar 21 . As described above, since the welding tool enters the inside of the welding space 121 and welds the electrode lead 33 , it is possible to prevent spatter or welding sparks from splashing around the electrode lead 33 .
- the masking jig 120 may be formed in a rectangular cylinder shape parallel to the longitudinal direction of the bus bar 21 .
- the welding space 121 is formed parallel to the longitudinal direction of the bus bar 21 .
- the masking jig 120 may have a narrower width than the bus bar 21 .
- the width of the welding space 121 may be narrower than that of the bus bar 21 .
- the length of the welding space 121 may be slightly shorter than the length of the electrode lead 33 .
- the cross section of the welding space 121 may be formed in a rectangular shape parallel to the longitudinal direction of the bus bar 21 . Since the masking jig 120 is formed in the shape of a square cylinder, overlapping portions of the electrode leads 33 may be welded in the longitudinal direction.
- the masking jig 120 compresses the bent electrode lead 33 to the bus bar 21 . Accordingly, when the welding tool welds the electrode lead 33, the overlapped portion of the electrode lead 33 can be prevented from being lifted or separated. Furthermore, it is possible to prevent the welding bonding strength of the overlapping portion of the electrode lead 33 from being lowered. In addition, it is possible to prevent welding defects from occurring by suppressing local temperature deviations of the electrode leads 33 due to lifting or separation of the electrode leads 33 .
- the electrode lead alignment masking device 100 includes a pair of alignment jigs 110 and a pair of alignment jigs 110 to align a pair of electrode leads 33 to one bus bar 21.
- a masking jig 120 may be included.
- the electrode lead aligning and masking device 100 aligns and masks the electrode lead 33 on one bus bar 21 each time it descends.
- the electrode lead alignment masking device 100 includes four or more alignment jigs 110 to align a pair of electrode leads 33 to at least two or more bus bars 21.
- Two or more masking jigs 120 may be manufactured in an arrayed form.
- the electrode lead aligning masking device 100 can simultaneously align the electrode leads 33 to two or more bus bars 21 each time it descends.
- FIG. 8 is an exploded perspective view schematically showing an electrode lead alignment masking device according to a second embodiment of the present invention
- FIG. 9 is a perspective view schematically showing an electrode lead alignment masking device according to a second embodiment of the present invention.
- 10 is a front view schematically showing an electrode lead alignment masking device according to a second embodiment of the present invention
- FIG. 11 schematically shows a state in which lines 11-11 are cut in the electrode lead alignment masking device of FIG. 10
- 12 is a cross-sectional view schematically showing a state in which the electrode lead alignment masking device of FIG. 11 cut lines 12-12 from the electrode lead
- FIG. It is a cross-sectional view schematically showing a state in which lines 13-13 are cut in .
- the electrode lead alignment masking device 100 includes a pair of aligning jigs 110, a masking jig 120, and It includes at least two or more elastic members 130.
- the pair of alignment jigs 110 are inserted into the slots 23 on both sides of the bus bar 21 to align the positions of the pair of electrode leads 33.
- a pair of alignment jigs 110 gather the electrode leads 33 bent while being inserted into the slots 23 on both sides of the bus bar 21 in the width direction.
- the pair of electrode leads 33 may be aligned in close contact with both sides of the bus bar 21 in the width direction or slightly spaced apart from each other.
- the end of one electrode lead 33 may have a length spaced apart from the bent portion 34 of the other electrode lead 33 by a predetermined distance. there is.
- the masking jig 120 is disposed between the pair of alignment jigs 110 and is formed to surround the welding portion of the electrode lead 33 .
- the alignment jig 110 is movably coupled to the masking jig 120 .
- the masking jig 120 shields (masks) the circumference of the welding area to prevent sparks or spatter from escaping from the welding area when the electrode lead 33 is welded to the bus bar 21. Accordingly, it is possible to significantly reduce a welding defect rate by preventing spatter or sparks generated during welding from splashing on surrounding structures.
- At least two or more elastic members 130 are installed on both sides of the masking jig 120 to elastically support the pair of alignment jigs 110 .
- the elastic member 130 may be a coil spring connecting the masking jig 120 and the alignment jig 110 .
- the elastic member 130 may be applied in various shapes and positions as long as it elastically supports the alignment jig 110 .
- the alignment jig 110 is movably coupled to the masking jig 120 and elastically supported by the elastic member 130 . Accordingly, since the alignment jig 110 aligns the electrode lead 33 while moving up and down, deformation of the electrode lead 33 can be minimized. In addition, since the impact of the alignment jig 110 and the electrode lead 33 is buffered at the moment when the alignment jig 110 presses the electrode lead 33, damage to the alignment jig 110 and the electrode lead 33 is prevented. can do. In addition, scratches on the surface of the electrode lead 33 can be prevented, and the possibility of overheating and ignition of the electrode lead 33 can be significantly reduced.
- a pair of alignment jigs 110 align the positions of the bent electrode leads 33, and a welding tool (not shown) in a state in which the masking jig 120 presses the bent electrode leads 33 ) welds the electrode lead 33, the bent electrode lead 33 can be welded to the correct position of the bus bar 21.
- the actual welding length of the electrode lead 33 may match the design welding length.
- the welding length means a length welded parallel to the length of the bus bar 21 in the width direction.
- the end of the bent electrode lead 33 does not overlap with the bent portion 34 bent in a round shape in the opposite electrode lead 33, the overlapped portion of the pair of electrode leads 33 is not locally lifted or gap can prevent it from happening. Accordingly, bonding strength of the welded portion may be increased.
- the welding length of the pair of electrode leads 33 in each bus bar 21 becomes uniform, the actual welding length matches the design required dimension, and the welding defect rate can be reduced.
- the masking jig 120 includes a masking body 122 and a sliding guide 125 .
- a welding space 121 penetrating in the vertical direction is formed in the masking body 122 .
- the welding space 121 may be formed in the form of a long hole parallel to the longitudinal direction of the masking body 122 . Accordingly, the welding tool can access and weld the electrode lead 33 through the welding space 121 .
- the welding tool may be a laser welding tool for welding the electrode lead 33 by irradiating a laser beam or a spot welding tool for welding the electrode lead 33 by applying a current.
- Various types of welding may be applied according to the types of materials of the electrode lead 33 and the bus bar 21 . As described above, since the welding tool enters the inside of the welding space 121 and welds the electrode lead 33 , it is possible to prevent spatter or welding sparks from splashing around the electrode lead 33 .
- the sliding guide part 125 is disposed on both sides of the masking body part 122 .
- Sliding grooves 121 are formed in the sliding guide 125 so that the alignment jigs 110 are slidably coupled to each other.
- the sliding groove portion 121 is a space surrounded by the side surface of the masking body portion 122 and the inner surface of the sliding guide portion 125 .
- the sliding groove portion 121 is formed in the form of a long hole along the longitudinal direction of the masking body portion 122 .
- the lower side of the sliding groove portion 121 is open.
- the sliding guide part 125 supports the alignment jig 110 so that the alignment jig 110 does not shake.
- the alignment jig 110 is inserted outside the electrode lead 33 in the slot 23 and gathers the electrode lead 33 toward the bus bar 21. At this time, outer sides of the pair of alignment jigs 110 in the thickness direction may contact or be spaced apart from the outer surfaces of the slots 23 . In addition, inner sides of the pair of alignment jigs 110 in the thickness direction may contact outer surfaces of the electrode leads 33 . Accordingly, when the alignment jig 110 descends, the pair of electrode leads 33 can be aligned while being gathered toward the bus bar 21 .
- the alignment jig 110 includes an alignment body 111 , an alignment rib 113 and a slider 116 .
- the alignment jig 110 may be formed in a rectangular panel shape as a whole.
- the alignment body 111 is opposed to both sides of the masking jig 120 .
- the inner surface of the alignment body 111 is formed in a flat plate shape so as to come into surface contact with the side surface of the masking jig 120 .
- the alignment rib 113 extends downward from the alignment body portion 111 and is formed thinner than the thickness of the alignment body portion 111 .
- the alignment ribs 110 align the electrode leads 33 as they are inserted into the slots 23 between the bus bars 21 .
- the alignment rib 110 may have the same length as the alignment body 122 or may have a slightly different length.
- the slider 116 extends upward from the alignment body 111 and is slidably coupled to the sliding groove 126 .
- the slider 116 may be formed in a plate shape to fit into the sliding groove 126 .
- the length of the slider 116 may be slightly shorter than the length of the sliding groove 126 .
- the slider 116 may have a thickness smaller than that of the alignment body 111 . Accordingly, the lower end of the slider 116 and the upper end of the alignment body 111 may be formed stepwise. In addition, since the thickness of the slider 116 is formed thin, the width of the sliding guide portion 125 and the width of the sliding groove portion 126 may be prevented from being unnecessarily increased.
- An alignment tapered portion 114 is formed inside the alignment rib 113 in the thickness direction to gather the electrode leads 33 toward the bus bar 21.
- the alignment rib 113 gradually becomes thinner toward the lower side by the alignment taper portion 114 . Accordingly, the lower end of the alignment rib 113 is easily inserted between the outer surface of the electrode lead 33 and the outer surface of the slot 23, and as the alignment rib 113 descends, the electrode lead 33 is moved to the bus bar. (21) It can be aligned while pressing to the side.
- the aligning rib 113 is inserted into the slot 23, the end of the aligning rib 113 is caught in the bent portion 34 of the electrode lead 33, causing damage to the aligning rib 113 or the electrode lead 33. Or it can be prevented from being damaged.
- a movement limiting unit 112 is formed on the upper side of the alignment body 111 to limit the movement distance of the alignment jig 110 by being caught on the lower end of the sliding guide unit 125 .
- the movement limiting unit 112 may be a step formed at a boundary between an upper end of the alignment body 111 and a lower end of the slider 116 .
- the movement limiting unit 112 may be formed in various structures on the alignment body 111 or the slider 116 .
- a stepped portion 115 may be formed below the alignment body portion 111 to be spaced apart from the bent portion 34 of the electrode lead 33 .
- the pressing surface portion 123 of the masking jig 120 is disposed at a lower position than the stepped portion 115 .
- the stepped portion 115 may be formed horizontally or slightly inclined to the pressing surface portion 123 . Accordingly, when the pressing surface 123 of the masking jig 120 presses the electrode lead 33, the bending portion 34 of the electrode lead 33 is spaced apart from the stepped portion 115 by a predetermined distance, so that the alignment body portion (111) can be prevented from pressing the bent portion 34 of the electrode lead 33. Furthermore, it is possible to prevent the electrode lead 33 or the electrode tab 31 from being bent or damaged by the pressing force of the alignment body 111 .
- the length of the alignment jig 110 may be slightly shorter than the length of the slot 23 .
- the length of the alignment jig 110 may be equal to or slightly longer than the length of the electrode lead 33 .
- the alignment jig 110 may be formed in various shapes such as a sawtooth shape for aligning the electrode leads 33 by being inserted into the slot 23 and a plurality of bar shapes arranged in a row.
- the masking jig 120 may be formed in a rectangular cylinder shape parallel to the longitudinal direction of the bus bar 21 .
- the masking jig 120 may have a narrower width than the bus bar 21 .
- the width of the welding space 121 may be narrower than that of the bus bar 21 .
- the length of the welding space 121 may be slightly shorter than the length of the electrode lead 33 .
- the cross section of the welding space 121 may be formed in a rectangular shape parallel to the longitudinal direction of the bus bar 21 . Since the masking jig 120 is formed in the shape of a square cylinder, overlapping portions of the electrode leads 33 may be welded in the longitudinal direction.
- the masking jig 120 compresses the bent electrode lead 33 to the bus bar 21 . Accordingly, when the welding tool welds the electrode lead 33, the overlapped portion of the electrode lead 33 can be prevented from being lifted or separated. Furthermore, it is possible to prevent the welding bonding strength of the overlapping portion of the electrode lead 33 from being lowered. In addition, it is possible to prevent welding defects from occurring by suppressing local temperature deviations of the electrode leads 33 due to lifting or separation of the electrode leads 33 .
- the elastic member 130 may be supported on the upper end of the alignment body 111 and the upper end of the sliding groove 126 .
- the elastic members 130 may be respectively disposed on both sides of the alignment body 111 in the longitudinal direction. Since the elastic members 130 are disposed on both sides of the alignment body 111 in the longitudinal direction, the alignment jig 110 may be slightly tilted to one side in the longitudinal direction. Accordingly, even if the electrode lead 33 or the bus bar 21 is slightly tilted, the alignment jig 110 may be slightly tilted to one side in the longitudinal direction to align the electrode lead 33 .
- the electrode lead alignment masking device 100 includes a pair of alignment jigs 110 and a pair of alignment jigs 110 to align a pair of electrode leads 33 to one bus bar 21.
- a masking jig 120 may be included.
- the electrode lead aligning and masking device 100 aligns and masks the electrode lead 33 on one bus bar 21 each time it descends.
- the electrode lead alignment masking device 100 includes four or more alignment jigs 110 to align a pair of electrode leads 33 to at least two or more bus bars 21.
- Two or more masking jigs 120 may be manufactured in an arrayed form.
- the electrode lead aligning masking device 100 can simultaneously align the electrode leads 33 to two or more bus bars 21 each time it descends.
- FIG. 14 is a cross-sectional view schematically showing a state in which electrode leads of battery cells in the secondary battery module according to the present invention are inserted into slots of bus bars
- FIG. 15 is a cross-sectional view showing electrode leads of battery cells in the secondary battery module according to the present invention
- FIG. 16 is a cross-sectional view schematically showing a state in which the alignment masking device according to the present invention is positioned on the upper side of the bus bar
- FIG. 17 is a cross-sectional view of the alignment masking device according to the present invention.
- 18 is a cross-sectional view schematically showing a state in which the alignment jig is inserted into the slot between the bus bars
- FIG. 18 schematically shows a state in which the step portion of the alignment jig of the alignment masking device according to the present invention presses the bent portion of the electrode lead.
- 19 is a cross-sectional view schematically showing a state in which the pressing surface portion of the masking jig of the alignment masking device according to the present invention presses the electrode lead
- FIG. 20 is a cross-sectional view of the masking jig according to the present invention through the welding space It is a drawing schematically showing a state in which the lead is welded to the bus bar.
- the electrode leads 33 of the battery cell 30 are inserted into the slots 23 on both sides of the bus bar 21. At this time, the electrode leads 33 may be vertically inserted into both sides of the bus bar 21 .
- a bending device presses the electrode lead 33 toward the bus bar 21 and bends it.
- the pair of electrode leads 33 may be spread on both sides of the bus bar 21 or may be spaced apart from both sides of the bus bar 21 (see FIG. 15).
- the alignment masking device 100 is moved to the upper side of the bus bar 21 .
- the alignment jig 110 maintains the most descended state in the sliding guide part 25 by the elastic force of the elastic member 130 .
- the alignment jig 110 When the alignment masking device 100 is lowered, the alignment jig 110 is inserted into the slots 23 on both sides of the bus bar 21 . At this time, when the alignment tapered portion 114 of the alignment jig 110 applies an impact to the bending portion 34 of the electrode lead 33, the elastic member 130 slightly contracts, thereby reducing the pressure applied to the electrode lead 33. The shock is dampened.
- the alignment tapered portion 114 of the alignment jig 110 slides along the bent portion 34 of the electrode lead 33 and descends smoothly.
- the alignment taper part 114 presses the outside of the electrode lead 33 and gathers the electrode lead 33 toward the bus bar 21.
- the electrode leads 33 come into close contact with both sides of the bus bar 21 (see FIG. 17). At this time, the electrode lead 33 may be lifted or separated from the upper surface of the bus bar 21 .
- the stepped portion 115 of the alignment jig 110 comes into close contact with the bent portion 34 of the electrode lead 33 (FIG. 18). At this time, the pressing force of the alignment masking device 100 is applied to the bending portion 34 of the electrode lead 33 .
- the masking jig 120 descends in a state where the stepped portion 115 of the alignment jig 110 is caught on the bent portion 34 of the electrode lead 33 .
- the elastic member 130 contracts in the longitudinal direction.
- the electrode lead 33 is closely adhered to the upper surface of the bus bar 21.
- the welding tool welds the electrode lead 33 to the upper surface of the bus bar 21 through the welding space 121 of the masking jig 120 (see FIG. 20). Accordingly, the electrode lead 33 can be welded to the bus bar 21 in a state of being in close contact with both side surfaces and the upper surface of the bus bar 21 .
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
Claims (20)
- 전극리드의 용접 공정에서 버스바에 벤딩된 전극리드를 정렬하는 전극리드 정렬 마스킹 장치에 있어서,상기 버스바 사이의 슬롯에 삽입되어 상기 전극리드의 위치를 정렬하는 한 쌍의 정렬 지그; 및상기 한 쌍의 정렬 지그 사이에 배치되고, 상기 전극리드의 용접 부위를 둘러싸는 마스킹 지그;를 포함하는, 전극리드 정렬 마스킹 장치.
- 제1항에 있어서,상기 한 쌍의 정렬 지그는 상기 마스킹 지그의 폭방향 양측에 결합되는, 전극리드 정렬 마스킹 장치.
- 제1항에 있어서,상기 정렬 지그는 상기 슬롯에서 상기 전극리드의 바깥쪽에 삽입되면서 상기 전극리드를 상기 버스바 측으로 모아주는, 전극리드 정렬 마스킹 장치.
- 제3항에 있어서,상기 정렬 지그는,상기 마스킹 지그의 양측에 대향되는 정렬 바디부; 및상기 정렬 바디부에서 연장되고, 상기 정렬 바디부의 두께보다 얇게 형성되며, 상기 슬롯에 삽입되면서 상기 전극리드를 정렬하는 정렬 리브;를 포함하는, 전극리드 정렬 마스킹 장치.
- 제3항에 있어서,상기 정렬 리브의 두께방향 내측에는 상기 전극리드를 버스바 측으로 모아주도록 정렬 테이퍼부가 형성되는, 전극리드 정렬 마스킹 장치.
- 제5항에 있어서,상기 정렬 바디부의 하측에는 상기 전극리드의 벤딩부와 이격되도록 단차부가 형성되고,상기 마스킹 지그의 가압면부는 상기 단차부보다 낮은 위치에 배치되는, 전극리드 정렬 마스킹 장치.
- 제1항에 있어서,상기 정렬 지그는 사각 패널 형태로 형성되는, 전극리드 정렬 마스킹 장치.
- 제1항에 있어서,상기 마스킹 지그의 내부에는 상하방향으로 관통되는 용접 공간부가 형성되는, 전극리드 정렬 마스킹 장치.
- 제8항에 있어서,상기 마스킹 지그는 상기 버스바의 길이방향과 나란한 사각통 형태로 형성되고,상기 용접 공간부는 상기 버스바의 길이방향을 따라 나란하게 형성되는, 전극리드 정렬 마스킹 장치.
- 제1항에 있어서,상기 마스킹 지그는 상기 전극리드를 상기 버스바에 압착시키는, 전극리드 정렬 마스킹 장치.
- 전극리드의 용접 공정에서 버스바에 벤딩된 전극리드를 정렬하는 전극리드 정렬 마스킹 장치에 있어서,상기 버스바 사이의 슬롯에 삽입되어 상기 전극리드의 위치를 정렬하는 한 쌍의 정렬 지그;상기 한 쌍의 정렬 지그 사이에 배치되고, 상기 전극리드의 용접 부위를 둘러싸도록 설치되고, 상기 정렬 지그가 이동 가능하게 결합되는 마스킹 지그; 및상기 한 쌍의 정렬 지그를 탄성 지지하도록 상기 마스킹 지그의 양측에 각각 설치되는 적어도 2개 이상의 탄성부재;를 포함하는, 전극리드 정렬 마스킹 장치.
- 제11항에 있어서,상기 마스킹 지그는,상하방향으로 관통되는 용접 공간부가 형성되는 마스킹 바디부; 및상기 마스킹 바디부의 양측에 배치되고, 상기 정렬 지그가 각각 슬라이딩 가능하게 결합되는 슬라이딩홈부가 형성되는 슬라이딩 가이드부;를 포함하는, 정렬 마스킹 장치.
- 제12항에 있어서,상기 정렬 지그는,상기 마스킹 지그의 양측에 대향되는 정렬 바디부;상기 정렬 바디부에서 하측으로 연장되고, 상기 정렬 바디부의 두께보다 얇게 형성되며, 상기 슬롯에 삽입됨에 따라 상기 전극리드를 정렬하는 정렬 리브; 및상기 정렬 바디부에서 상측으로 연장되고, 상기 슬라이딩홈부에 슬라이딩 가능하게 결합되는 슬라이더;를 포함하는, 전극리드 정렬 마스킹 장치.
- 제13항에 있어서,상기 정렬 리브는 상기 슬롯에서 상기 전극리드의 바깥쪽에 삽입되면서 상기 전극리드를 상기 버스바 측으로 모아주는, 전극리드 정렬 마스킹 장치.
- 제13항에 있어서,상기 정렬 리브의 두께방향 내측에는 상기 전극리드를 버스바 측으로 모아주도록 정렬 테이퍼부가 형성되는, 전극리드 정렬 마스킹 장치.
- 제15항에 있어서,상기 슬라이더의 두께는 상기 정렬 바디부의 두께보다 얇게 형성되는, 전극리드 정렬 마스킹 장치.
- 제13항에 있어서,상기 정렬 바디부의 상측에는 상기 슬라이딩 가이드부의 하측 단부에 걸려 상기 정렬 지그의 이동 거리를 제한하는 이동 제한부가 형성되는, 전극리드 정렬 마스킹 장치.
- 제13항에 있어서,상기 탄성부재는 상기 정렬 바디부의 상단부와 상기 슬라이딩홈부의 상단부에 지지되는, 전극리드 정렬 마스킹 장치.
- 제18항에 있어서,상기 탄성부재는 상기 정렬 바디부의 길이방향 양측에 각각 배치되는, 전극리드 정렬 마스킹 장치.
- 제11항에 있어서,상기 정렬 바디부의 하측에는 상기 전극리드의 벤딩부와 이격되도록 단차부가 형성되고,상기 마스킹 지그의 가압면부는 상기 단차부보다 낮은 위치에 배치되는, 전극리드 정렬 마스킹 장치.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23760343.6A EP4456311B1 (en) | 2022-02-22 | 2023-02-20 | Electrode lead aligning and masking device |
| CN202380023209.7A CN118743101A (zh) | 2022-02-22 | 2023-02-20 | 电极引线对准和遮掩装置 |
| JP2024539989A JP7732724B2 (ja) | 2022-02-22 | 2023-02-20 | 電極リード整列マスキング装置 |
| US18/728,631 US20250065448A1 (en) | 2022-02-22 | 2023-02-20 | Electrode Lead Aligning and Masking Device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20220022936 | 2022-02-22 | ||
| KR10-2022-0022936 | 2022-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023163469A1 true WO2023163469A1 (ko) | 2023-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/002396 Ceased WO2023163469A1 (ko) | 2022-02-22 | 2023-02-20 | 전극리드 정렬 마스킹 장치 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250065448A1 (ko) |
| EP (1) | EP4456311B1 (ko) |
| JP (1) | JP7732724B2 (ko) |
| KR (1) | KR20230126199A (ko) |
| CN (1) | CN118743101A (ko) |
| WO (1) | WO2023163469A1 (ko) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7741919B1 (ja) * | 2024-03-29 | 2025-09-18 | 本田技研工業株式会社 | バスバークランプ装置 |
| JP7742445B1 (ja) * | 2024-03-29 | 2025-09-19 | 本田技研工業株式会社 | バスバークランプ装置およびバスバークランプ方法 |
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2023
- 2023-02-20 WO PCT/KR2023/002396 patent/WO2023163469A1/ko not_active Ceased
- 2023-02-20 KR KR1020230022109A patent/KR20230126199A/ko active Pending
- 2023-02-20 JP JP2024539989A patent/JP7732724B2/ja active Active
- 2023-02-20 CN CN202380023209.7A patent/CN118743101A/zh active Pending
- 2023-02-20 US US18/728,631 patent/US20250065448A1/en active Pending
- 2023-02-20 EP EP23760343.6A patent/EP4456311B1/en active Active
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| KR20210023289A (ko) * | 2019-08-22 | 2021-03-04 | (주)제이앤디테크 | 이차전지 제조장치 및 그에 사용되는 가압모듈 |
| KR20210087362A (ko) * | 2020-01-02 | 2021-07-12 | 주식회사 엘지에너지솔루션 | 용접 대상물들의 밀착력을 향상시킬 수 있는 가압 지그 |
| KR20220022936A (ko) | 2020-08-19 | 2022-03-02 | 한양대학교 산학협력단 | 미세섬유 기반의 멤브레인 및 이의 제조방법 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7741919B1 (ja) * | 2024-03-29 | 2025-09-18 | 本田技研工業株式会社 | バスバークランプ装置 |
| JP7742445B1 (ja) * | 2024-03-29 | 2025-09-19 | 本田技研工業株式会社 | バスバークランプ装置およびバスバークランプ方法 |
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| US20250065448A1 (en) | 2025-02-27 |
| EP4456311A1 (en) | 2024-10-30 |
| EP4456311B1 (en) | 2026-04-01 |
| JP7732724B2 (ja) | 2025-09-02 |
| JP2024546352A (ja) | 2024-12-19 |
| CN118743101A (zh) | 2024-10-01 |
| KR20230126199A (ko) | 2023-08-29 |
| EP4456311A4 (en) | 2025-04-30 |
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