WO2023234689A1 - 레이저 용접장치 및 이를 이용한 용접방법 - Google Patents
레이저 용접장치 및 이를 이용한 용접방법 Download PDFInfo
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- WO2023234689A1 WO2023234689A1 PCT/KR2023/007417 KR2023007417W WO2023234689A1 WO 2023234689 A1 WO2023234689 A1 WO 2023234689A1 KR 2023007417 W KR2023007417 W KR 2023007417W WO 2023234689 A1 WO2023234689 A1 WO 2023234689A1
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- WIPO (PCT)
- Prior art keywords
- metal
- laser welding
- pcb
- jig
- welding device
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Classifications
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- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- 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
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- 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
-
- 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
- H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
-
- 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
- B23K2101/42—Printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/04—Soldering or other types of metallurgic bonding
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/10—Using electric, magnetic and electromagnetic fields; Using laser light
- H05K2203/107—Using laser light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/15—Position of the PCB during processing
- H05K2203/1509—Horizontally held PCB
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
Definitions
- the present invention relates to a laser welding device and a welding method using the same. Specifically, it relates to a laser welding device and a welding method using the same that can reduce or suppress weak welding defects that may occur due to focus position deviation during laser welding between thin metals.
- Electric vehicles use battery modules that electrically connect multiple battery cells or battery packs that combine multiple battery modules.
- a plurality of battery cells stored in a battery module or battery pack are connected in series and/or in parallel.
- the battery cell is welded directly to the bus bar, or the electrode lead is welded to the PCB (Printed Circuit Board).
- Welding includes electric resistance welding, ultrasonic welding, and laser welding, but the use of laser welding is explosively increasing due to the advantages of enabling precise welding of fine areas, fast work speed, and small thermal strain.
- an electrode lead to a PCB In order to weld an electrode lead to a PCB, conventionally, a metal pad with a thickness of 0.3 mm was added to the PCB copper foil, and then the metal pad and the electrode lead were welded. After electrically connecting the PCB copper foil and the metal pad, the electrode lead is placed on the metal pad. After adjusting the vertical position of the laser welding device to focus, the metal pad and the electrode lead are welded. Even if the focus of the laser welding device is not accurately placed between the metal pad and the electrode lead, the metal pad melts after a certain period of time due to the thickness of the metal pad and is electrically coupled to the electrode lead.
- the focus of the laser welding device When welding PCB copper foil and electrode leads without a metal pad, the focus of the laser welding device must be positioned very accurately. Typically, the thickness of the PCB copper foil and electrode lead is less than 0.1 mm, so if the focus of the laser welding device is not accurately placed between them, welding may not occur, only a portion of the surface of the electrode lead may be melted, or the PCB copper foil may be damaged. occurs.
- the laser welding device focuses by adjusting the vertical height and then moves horizontally in the direction of the electrode lead length or thickness to perform overall welding. Mechanical deviations that may occur while the laser welding device moves horizontally may cause the focus position to change, which may reduce the accuracy of the welding position and result in weak welding defects. Even if the laser welding device moves horizontally at the same height without deviation, welding defects may occur due to deviations in the thickness of the PCB board, copper foil, and electrode leads.
- FIG. 1 is a cross-sectional schematic diagram of a laser welding device 10 according to the prior art. Unlike FIG. 2, the laser welding device 10 of FIG. 1 does not use a metal pad (P).
- the laser welding device 10 according to the prior art includes a lower jig 100 supporting the PCB 500, a metal 510 inserted into the upper surface of the PCB 500, and a metal 510 on the upper surface of the metal 510. It includes a laser welding portion 200 that welds the other metal (M) located and an upper jig 300 that pressurizes a portion of the upper surface of the PCB 500.
- the metal 510 can typically be a copper foil of a PCB, and the other metal (M) can be an electrode lead.
- the laser welding device 10 welds and electrically connects the metal 510 and another metal (M) using a laser (L).
- the laser focus can easily deviate from the interface due to the thin thickness of the metal 510 and the other metal (M).
- High precision is required to position the focus at the interface of a thin metal.
- weak welding defects may occur between the metal 510 and the other metal (M).
- FIG. 2 is a cross-sectional schematic diagram of another laser welding device 20 according to the prior art.
- the laser welding device 20 in FIG. 2 shows a case where a separate metal pad (P) is used.
- the laser welding device 20 according to the prior art includes a lower jig 100 supporting the PCB 600, a metal 610 placed on the upper surface of the PCB 600, and a lower jig 100 on the upper surface of the metal 610. It includes a laser welding portion 200 that welds a positioned metal pad (P) and another metal (M), and an upper jig 300 that pressurizes a portion of the upper surface thereof.
- the metal 610 may typically be a copper foil of a PCB
- the metal pad (P) may be a separate copper foil to assist welding
- the other metal (M) may be an electrode lead.
- the laser welding device 20 must initially weld and electrically connect the metal 610 and another metal (M) using a laser (L). Due to the thin thickness of the metal 610 and the other metal (M), it is difficult to lose the welding focus or accurately set the focus position. Because of this, there is a problem that weak welding defects may occur between the metal 610 and the other metal (M).
- a metal pad (P) was added between the metal 610 and the other metal (M) to prevent weak welding defects.
- the metal pad (P) acts as an intermediate medium to electrically connect the metal 610 and the other metal (M).
- the manufacturing cost increase, but it cannot be applied to technologies for increasing capacity or reducing weight due to the increase in thickness due to welding.
- the metal 510 is copper foil and its thickness is 0.08 mm.
- the deviation according to the thickness is +-0.15 mm
- the tolerance according to the position of the laser welding portion (200) is +-0.2 mm.
- the focus deviation of the laser welding portion 200 becomes +-0.35 mm, exceeding the thickness of the copper foil 510. In this case, the focus of the laser welding portion 200 is not aligned with the interface between the copper foil 510 and the other metal M, resulting in welding defects.
- laser welding can be performed as 'over-welding' rather than 'weak welding'.
- the welding area or thickness is made larger than the normal level and the welded area is overworked.
- the copper foil 510 and the other metal (M) can be welded, but the lower layer of the PCB 500 may be damaged due to excessive welding.
- Figure 3 shows examples of patterns according to laser welding.
- the shape in which the laser welding portion 200 moves while welding is performed is shown. Even if normal welding is performed without overwelding, if welding is performed in the form shown in (a) of FIG. 3, overwelding may occur in areas where welding overlaps.
- the applicant according to the present invention proposed a method of providing a separate metal protection layer in the middle of a PCB composed of several layers to solve not only this 'overwelding' problem but also the overwelding problem caused by overlapping patterns as shown in (a) of Figure 3. was derived and the corresponding configuration was applied for. However, in this case, there is a problem of having to prepare a separate PCB with a metal protective layer.
- Patent Document 1 discloses a laser welding jig that brings a PCB and a connecting member into close contact and performs welding. Patent Document 1 is intended to prevent welding defects from occurring due to separation between the PCB and the connecting member. Patent Document 1 is a technology for close contact between the PCB and the connection member by simply pressing it, and does not take into account matters such as the position of the PCB and the connection member that are in close contact, thereby reducing the focus of laser welding caused by the thin thickness between the welding objects. There is no disclosed solution to resolve the deviation.
- Patent Document 2 discloses a laser welding device for electrode terminals of a coin-type battery including an ultrasonic vibration control unit that vibrates in the left and right directions.
- Patent Document 2 adds ultrasonic vibration rather than simple vibration, and this also moves left and right.
- the purpose of adding ultrasonic vibration in Patent Document 2 is to improve mechanical properties according to the growth pattern of the metal during welding.
- Patent Document 2 is intended to improve the effect of heat on the metal to be welded and its metal structure while the welding itself proceeds without problems, and does not seem to have recognized the problem of the focus position itself.
- Patent Document 2 directly affects the metal being welded through the energy of ultrasonic waves, but the deviation in focus cannot be resolved through this.
- Patent Document 3 discloses a technology that vibrates the material by forming a magnetic field around the laser welding area.
- Patent Document 3 is for the discharge of gas that may be generated during welding, and can only be applied to magnetic materials that require the material to be welded to vibrate by a magnetic field, and is applied to already molten metal regardless of the focus of welding.
- Patent Document 3 changes the spacing of materials up and down, which will actually aggravate the focus deviation problem of the present invention.
- the purpose of the present invention is to provide a laser welding device and a welding method using the same that can reduce or suppress weak welding defects that may occur due to focus position deviation during laser welding between thin metals.
- the present invention provides a lower jig, a laser welding portion for welding a metal disposed on the upper surface of a PCB disposed on the lower jig with another separate metal, and at least a portion of the upper surface of the PCB and the upper surface of the metal.
- the laser welding device including an upper jig supporting at least one of at least a portion of and at least a portion of the upper surface of the other metal,
- a laser welding device in which the upper jig is fixed and has a constant vertical position, or can be fixed at a specific position when the upper jig moves up and down.
- the lower jig can be moved up and down by the moving part.
- the upper jig may support at least a portion of the upper surface of the other metal, and may additionally support at least one of the upper surface of the PCB and the upper surface of the metal.
- the lower jig can be moved by the moving part to a position fixed by the upper jig. That is, the position fixed by the upper jig is constant, and if the metal and the other metal to be welded using the lower jig are fixed at a certain height of the upper jig, the thickness of the other metal measured in advance and the thickness of the metal are taken into consideration. Thus, the distance from the laser welding portion can be set to a constant level. Through this, the focus of the laser welding zone can also be formed consistently.
- Pressure may be applied to the upper jig by the moving unit, but the position of the upper jig is first fixed, and at least a portion of the upper surface of the PCB in contact with the upper jig, at least a portion of the upper surface of the metal, and the upper surface of the other metal At least one part of has a certain height.
- the position of the upper surface of the other metal where actual welding is performed is constant.
- the moving part itself may be provided with an elastic member or a buffering member to prevent the PCB, the metal, and the other metal from being damaged when pressurized to a certain degree.
- a non-limiting example may be a spring.
- the upper jig is formed with a shoulder portion and can simultaneously support the other metal, the metal, and additionally the PCB.
- a support portion positioned to support the upper jig may be provided on a side of the PCB.
- a separate support part is fixed so that the position of the upper jig can be fixed at a constant level, and the lowered position of the upper jig can be fixed by the support part.
- the present invention also relates to a laser welding device including a lower jig and a laser welding unit for welding a metal disposed on the upper surface of a PCB disposed on top of the lower jig with another separate metal,
- a laser welding device including a vibration unit capable of vibrating the PCB up and down is provided.
- the upper jig is not necessarily necessary and can be composed of only the lower jig.
- the lower jig supports at least one surface of the lower part of the PCB, and the metal is formed on one surface of the upper part of the PCB.
- the laser welding part of the laser welding device according to the present invention can move horizontally, but the vertical position is fixed and constant.
- the vibrating unit may vibrate the lower jig up and down, and when the vibrating unit vibrates up and down together with the lower jig and the upper jig, the vibrating unit may be placed anywhere in the lower jig or the upper jig.
- An upper jig is added to support at least one of at least a portion of the upper surface of the PCB, at least a portion of the upper surface of the metal, and at least a portion of the upper surface of the other metal, and the upper jig may vibrate up and down like the lower jig.
- an upper jig is added to support one or more of at least a portion of the upper surface of the PCB, at least a portion of the upper surface of the metal, and at least a portion of the upper surface of the other metal, and the upper jig includes an elastic and/or buffer member, , the upper jig can move separately from the lower jig.
- the upper and lower positions of the upper jig may be fixed, and in this case, the PCB may slightly vibrate due to the vibration of the lower jig.
- the metal is installed on the PCB, and the thickness of the metal may be 0.05 mm to 0.2 mm. Also, at this time, the metal may not protrude from the surface of the PCB.
- the present invention also relates to a welding method using the laser welding device,
- a laser welding method including the step of laser welding the metal and another metal.
- Fixing in step 2) can be performed by moving the lower jig up and down.
- the present invention also relates to a welding method using the laser welding device,
- a laser welding method including the step of laser welding the metal and another metal. In this case, welding can be done with just the lower jig without the upper jig.
- Step 3) may be performed before step 2), or step 2) and step 3) may be performed simultaneously.
- the step 1-1) of fixing at least one of at least a portion of the upper surface of the PCB, at least a portion of the upper surface of the metal, and at least a portion of the upper surface of the other metal to the upper jig may be added.
- the upper jig and lower jig may vibrate simultaneously, or the upper jig may include an elastic and/or buffer member so that the upper jig and lower jig may move separately.
- welding when laser welding is performed, welding can be performed so that the laser trajectories do not overlap.
- the present invention also provides an electric device welded using the laser welding device.
- the present invention can be provided in a configuration that arbitrarily combines the problems to be solved above.
- the present invention fixes the focus of the laser welding portion at a certain level by fixing the upper jig at a certain position, thereby reducing or suppressing weak welding defects that may occur due to the deviation of the focus position during laser welding between thin metals.
- a laser welding device and a welding method using the same can be provided.
- the present invention can provide a laser welding device and a welding method using the same that can reduce or suppress weak welding defects by intermittently focusing the laser welding zone through vibration.
- the laser welding device has the advantage of not only reducing manufacturing costs but also reducing thickness by omitting the metal pad used in the prior art and performing welding.
- the present invention has the feature of reducing or suppressing weak welding defects when welding two metals of 0.1 mm or less.
- Figure 1 is a cross-sectional schematic diagram of a laser welding device 10 according to the prior art.
- Figure 2 is a cross-sectional schematic diagram of another laser welding device 20 according to the prior art.
- Figure 3 shows examples of patterns according to laser welding.
- Figure 4 is a cross-sectional schematic diagram showing a laser welding device according to the first embodiment of the present invention.
- Figure 5 is a cross-sectional schematic diagram showing a laser welding device according to a second embodiment of the present invention.
- Figure 6 is a cross-sectional view sequentially showing a welding method using a laser welding device according to a second embodiment of the present invention.
- Figure 7 is a cross-sectional schematic diagram showing a laser welding device according to a third embodiment of the present invention.
- Figure 8 is a cross-sectional schematic diagram showing a laser welding device according to a fourth embodiment of the present invention.
- Figure 9 is a cross-sectional schematic diagram showing a laser welding device according to a fifth embodiment of the present invention.
- Figure 4 is a cross-sectional schematic diagram showing a laser welding device according to the first embodiment of the present invention.
- the laser welding device 1000 When described with reference to FIG. 4, the laser welding device 1000 according to the first embodiment of the present invention includes a lower jig 1100, a laser welding unit 1200, an upper jig 1300, and a moving part 1400. It is composed.
- the lower jig 1100 supports the PCB (500, Printed Circuit Board) and may have a plate shape. For example, it may be made of metal. It is not limited thereto as long as it supports the PCB (500) and is not damaged by a certain pressing force. No.
- the PCB 500 may have a board made of an electrically insulating material and a metal 510 made of a conductive material installed on the top of the PCB 500.
- the metal 510 may be copper foil, and the thickness may be 0.05 mm to 0.1 mm.
- the other metal (M) may be an electrode lead connected on one side to an electrode tab protruding from the electrode assembly, and may have a thickness of 0.1 mm to 0.15 mm.
- Possible materials for the metal 510 and the other metal (M) may be one selected from copper, aluminum, tin, zinc, iron, gold, and silver, or an alloy thereof.
- the laser welding unit 1200 is the same as a typical laser welder used to weld thin metal, and its detailed configuration and detailed description will be omitted.
- the laser welding unit 1200 is for welding between the metal 510 and another metal (M), and includes a laser welding body (not shown) and a laser welding head (not shown) provided at the lower part of the laser welding body. ) and a moving part (not shown) capable of moving the laser welding head in the horizontal direction.
- the laser welding head is equipped with a laser beam irradiation unit (not shown) that irradiates a laser beam, so that laser welding between metals can be performed.
- an exhaust unit (not shown) capable of sucking air, etc. is provided near the laser welding head, so that metal fumes that may be generated during the laser welding process between metals can be removed.
- the upper jig 1300 can pressurize a portion of the upper surface of the other metal (M) located above the metal 510, specifically, a portion of the upper surface edge, to adhere and secure the metal 510 and the other metal (M).
- the upper jig 1300 may be hydraulic, and is not limited thereto, as long as it can adhere and fix the metal 510 and the other metal (M) by pressing the upper surface of the other metal (M).
- the upper jig 1300 presses the upper surface of the other metal (M) in the drawing
- the PCB 500 or a part of the metal 510 may also be pressed and fixed if necessary.
- the moving part 1400 is located on the lower side of the lower jig 1100, supports the lower jig 1100, and can rise to press the lower surface of the lower jig 1100.
- the lower jig 1100 is raised by the pressure of the moving part 1400 and is fixed to the upper jig 1300 fixed at a certain position.
- the metal 510 of the PCB 500 is pushed upward by the moving part 1400 to reduce the thickness deviation of the metal 510 implanted in the PCB 500, thereby reducing the thickness of the metal 510 during laser (L) welding. It has the advantage of preventing weak welding defects due to deviation. Since the tolerance of the other metal (M) is not as large as that of the PCB or laser welding part, when the other metal (M) is in close contact with the upper jig (1300), the part where the other metal (M) and the metal (510) come into contact are at a certain height. You will have
- the moving part 1400 may be structured to press the lower surface of the lower jig 1100 by rising further even after the PCB 500 and the metal 510 are supported by the lower jig 1100 and the upper jig 1300. .
- the moving part 1400 is composed of a hydraulic structure and can pressurize and raise the lower jig 1100, and if the thickness deviation of the PCB 500 during welding can be reduced by raising the lower jig 1100, this can be done. Not limited.
- Example 1 since the position of the upper jig 1300 is fixed, as an additional modification, the laser welding portion 1200 can be vibrated up and down to reduce weak welding defects due to additional tolerances.
- Figure 5 is a cross-sectional schematic diagram showing a laser welding device 2000 according to a second embodiment of the present invention.
- the laser welding device 2000 according to the second embodiment of the present invention is except that the shape of the upper jig 2300, the moving part 2400, and the support part 2500 are further provided. Since is the same as the laser welding device 1000 according to the first embodiment described in FIG. 4, description of the same configuration will be omitted.
- the laser welding device 2000 includes a lower jig 2100 supporting the PCB 500, a laser welding portion ( 2200), an upper jig 2300 that presses the other metal (M) and a part of the upper surface of the PCB 500, a moving part 2400 that presses the lower surface of the lower jig 2100, and located on the side of the PCB 500. It is configured to include a support portion 2500.
- the upper jig 2300 according to the second embodiment is formed with a jaw 2310 of the same height as the other metal (M), so that the other metal (M) and the PCB (500) can be fixed at the same time and positioned more stably. can be maintained.
- the moving part 2400 according to the second embodiment may be an elastic body with restoring force, so that when the moving part 2400 rises and presses the lower jig 2100, if the pressure applied to the PCB 500 is excessive, it is relieved. There is an advantage in that the PCB 500 can be prevented from being damaged.
- the moving part 2400 may be a spring, for example, and is not limited thereto as long as it has a structure that can relieve the pressure applied to the PCB 500 when the moving part 2400 rises and the pressure applied to the PCB 500 is excessive.
- the support portions 2500 are located on each side of the PCB 500 and support the lower edge of the upper jig 2300 when the upper jig 2300 is lowered.
- the support portion 2500 supports the lower edge of the lowering jig 2300, preventing the upper jig 2300 from descending more than necessary and causing the PCB 500 or other metal (M) to be damaged by pressure. There is an advantage in being able to prevent this. Additionally, the support portion 2500 is in a fixed position and can fix the lowered position of the upper jig 2300.
- the support portion 2500 has the advantage of allowing the upper jig 2300 to maintain a constant lowering position for pressing, and its height may be adjustable depending on conditions such as the thickness of the PCB 500.
- Figure 6 is a cross-sectional view sequentially showing the welding method using the laser welding device 2000 according to the second embodiment of the present invention.
- the welding method using the laser welding device includes the following steps: 1) positioning the PCB 500 on the upper surface of the lower jig 2100, 2) the upper jig 2300 is connected to the PCB ( 500) fixing the metal 510 and another metal (M), 3) pressing the lower surface of the lower jig 2100 through the moving part 2400, and 4) fixing the metal 510 and the other metal (M). ) and includes the step of welding.
- the step of positioning the PCB (500) on the upper surface of the lower jig (2100) involves placing the PCB (500) on the upper surface of the lower jig (2100) and placing another metal (M) on the upper surface of the metal (510) of the PCB (500). This is the step.
- the step in which the upper jig 2300 fixes the metal 510 and other metals (M) of the PCB 500 is when the upper jig 2300 is lowered and the PCB 500 and other metals located on the upper surface of the lower jig 2100 are lowered. This is the step of pressing and fixing the upper surface of one or more of the metals (M).
- a support part 2500 may be provided on the side of the PCB 500, and the support part 2500 can prevent the PCB 500 from being damaged by lowering the upper jig 2300 more than necessary.
- the moving part 2400 presses and raises the lower surface of the lower jig 2100 to raise the PCB 500 mounted on the lower jig 2100. This is the step to do it.
- the support portion 2500 has the advantage of allowing the upper jig 2300 to maintain a constant lowering position for pressing, and its height may be adjustable depending on conditions such as the thickness of the PCB 500.
- the step of welding the metal 510 and another metal (M) is a step of welding between the metal 510 and the other metal (M) fixed by the lower jig 2100 and the upper jig 2300.
- Figure 7 is a cross-sectional schematic diagram showing a laser welding device 3000 according to a third embodiment of the present invention.
- the laser welding device 3000 includes a lower jig 3100 and a laser welding portion 3200.
- the lower jig 3100 supports the PCB (500, Printed Circuit Board) and may have a plate shape. For example, it may be made of metal. It is not limited to this as long as it supports the PCB (500) and is not damaged by a certain pressing force. No.
- the lower jig 3100 may have a built-in vibrating unit (not shown), or the vibrating unit may be added separately.
- the lower jig 3100 can vibrate in the vertical direction by the vibration unit.
- the vibrating part can repeatedly apply vibration to the lower jig 3100 with an amplitude of ⁇ 0.2 mm, and vibrates in the vertical direction between the metal 510 of the PCB 500 and the other metal (M) through the laser welding part 3200.
- vibration occurs at the correct position due to vibration, thereby reducing the occurrence of weak welding defects.
- the PCB 500 is a board made of an electrically insulating material, and a metal 510 made of a conductive material may be inserted into the upper surface of the PCB 500.
- the metal 510 may be copper foil, and the thickness may be 0.05 mm to 0.1 mm.
- the other metal (M) may be an electrode lead connected on one side to an electrode tab protruding from the electrode assembly, and may have a thickness of 0.1 mm to 0.15 mm.
- Possible materials for the metal 510 and the other metal (M) may be one selected from copper, aluminum, tin, zinc, iron, gold, and silver, or an alloy thereof.
- the laser welding unit 3200 is the same as a typical laser welder used to weld thin metal, and its detailed configuration and detailed description will be omitted.
- the laser welding portion 3200 is for welding between the metal 510 and another metal (M), and includes a laser welding body (not shown) and a laser welding head (not shown) provided at the lower part of the laser welding body. ) and a moving part (not shown) capable of moving the laser welding head in the horizontal direction.
- the laser welding head is equipped with a laser beam irradiation unit (not shown) that irradiates a laser beam, so that laser welding between metals can be performed.
- an exhaust unit (not shown) capable of sucking air, etc. is provided near the laser welding head, so that metal fumes that may be generated during the laser welding process between metals can be removed.
- the laser welding unit 3200 can be welded at an accurate position while the metal 510 and the other metal M are vibrating in the up and down directions by the vibrating part of the lower jig 3100.
- the metal 510 and the other metal (M) are moved up and down by the vibrating unit.
- the laser is periodically focused on the contact point between the metal 510 and the other metal (M), and at this time, the metal 510 and the other metal (M) are welded. If you look at their cross sections, a welded area can be formed in a dotted line shape. The interval of the dotted line shape to be welded is adjusted according to the moving speed of the moving part or the vibration period of the vibrating part.
- the trajectory of the laser welding area for welding is preferably (b) to (f) in FIG. 3.
- the welded portion may show a solid line, but in Examples 3 and 5, vibration is added, so it takes the form of a dotted line instead of a solid line.
- the overlapping portion may be overwelded, so a non-overlapping trajectory is preferable.
- Figures 3 (b) to (f) are an example that do not overlap, and can be modified into various forms as long as they do not overlap.
- the vibration unit may use a device that changes the rotational movement of the motor into vibrational movement, and the rotational movement may be changed into vibrational movement using a rotational part that does not coincide with the rotational axis of the motor.
- various devices that can generate vibration which a person skilled in the art can select according to need.
- the vibration unit according to the present invention preferably has a frequency of 1 Hz to 10000 Hz, more preferably 10 Hz to 1000 Hz, and most preferably 50 Hz to 500 Hz.
- the vibration unit according to the present invention preferably has an amplitude of 0.1 mm to 5 mm, more preferably 0.2 mm to 3 mm, and most preferably 0.3 mm.
- Figure 8 is a cross-sectional schematic diagram showing the laser welding device 4000 according to the fourth embodiment of the present invention.
- the laser welding device 4000 according to the fourth embodiment of the present invention is the laser welding device according to the third embodiment described in FIG. 7, except that an upper jig 4300 is further provided. Since it is the same as (3000), description of the same configuration is omitted.
- the laser welding device 4000 includes a lower jig 4100 supporting the PCB 500, a laser welding portion ( 4200) and an upper jig 4300 that pressurizes a portion of the upper surface of the other metal (M).
- the upper jig 4300 has the advantage of improving welding quality by pressurizing the edge of the upper surface of the other metal (M), thereby bringing the metal 510 and the other metal (M) into close contact and fixing them.
- the upper jig 4300 can move together with the lower jig 4100 in accordance with the vertical movement of the lower jig 4100 according to the vibration unit.
- Figure 9 is a cross-sectional schematic diagram showing the laser welding device 5000 according to the fifth embodiment of the present invention.
- the laser welding device 5000 according to the fifth embodiment of the present invention is similar to the third embodiment described in FIG. 7, except that the upper jig 5300 and the elastic member 5400 are further provided. Since it is the same as the laser welding device 3000 according to the example, description of the same configuration will be omitted.
- the laser welding device 5000 includes a lower jig 5100 supporting the PCB 500, a laser welding part ( 5200), other metal (M), an upper jig 5300 that presses a portion of the upper surface of the PCB 500, and an elastic member 5400.
- the upper jig 5300 has a jaw portion of the same height as the other metal (M), so that the other metal (M) and the PCB (500) can be fixed at the same time and the position can be maintained more stably. there is.
- the upper jig 5300 may not move like the lower jig 5100.
- the upper jig 5300 is equipped with an elastic member 5400 with elasticity at the top, which prevents damage due to excessive pressure when the upper jig 5300 presses the PCB 500 and other metals (M).
- the upper jig 5300 may have a separate moving means such as a piston added for pressurization.
- the elastic member 5400 may be a spring, for example, and is not limited thereto as long as it can relieve the pressing force applied to the other metal (M) and the PCB 500 if it is excessive.
- the welding method using a laser welding device in Examples 3 to 5 includes the steps of positioning the PCB 500 on the upper surface of the lower jig (3100, 4100, 5100), vibrating the PCB 500 through a vibrating unit, and metal ( It includes the step of welding 510) and another metal (M).
- the step of positioning the PCB (500) on the upper surface of the lower jig (3100, 4100, 5100) involves placing the PCB (500) on the upper surface of the lower jig (3100, 4100, 5100) and the upper surface of the metal 510 of the PCB (500). This is the step of positioning the other metal (M).
- the vibrating unit built in or attached to the lower jig (3100, 4100, 5100) vibrates to create a focus for welding the metal (510) of the PCB (500) and the other metal (M). This is the step that allows it to be located in .
- the step of welding the metal 510 and another metal (M) is performed at the moment when the metal 510 and the other metal (M) of the PCB 500 vibrated by the vibrating unit coincide with the focus of the laser (L). This step is performed before or simultaneously with the step of vibrating the PCB 500 through the vibrating unit, which is the previous step.
- the upper jig 4300 presses and supports the upper surface of the other metal (M) before the step of welding the metal 510 and the other metal (M). Additional steps may be included.
- the upper jig 5300 is used to weld the metal 510 and other metals (M) of the PCB 500 before the step of welding the metal 510 and other metals (M).
- the step of pressing and supporting the upper surface of the metal (M) may be further included.
- the present invention can provide an electric device welded using the above-described laser welding device.
- the electric device refers to an electrode assembly, a battery cell, a battery module, a battery pack, and a device including at least one of these.
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Abstract
Description
Claims (14)
- 하부지그;상기 하부지그의 상부에 배치된 PCB의 상면에 배치된 금속을 별도의 타금속과 용접하는 레이저 용접부; 및상기 PCB 상면의 적어도 일부, 상기 금속 상면의 적어도 일부, 및 상기 타금속 상면의 적어도 일부 중 하나 이상을 지지하는 상부지그;를 포함하는 레이저 용접장치에 있어서,상기 상부지그는 고정되어 상하 위치가 일정하거나, 상기 상부지그가 상하로 이동할 경우 특정 위치에 고정될 수 있는 레이저 용접장치.
- 제1항에 있어서,이동부에 의해서 상기 하부지그는 상기 상부지그에 의해서 고정되는 위치까지 이동하는 레이저 용접장치.
- 제1항에 있어서,상기 PCB의 측부에 상기 상부지그를 지지할 수 있도록 위치하는 지지부가 구비된 레이저 용접장치.
- 하부지그; 및상기 하부지그의 상부에 배치된 PCB의 상면에 배치된 금속을 별도의 타금속과 용접하는 레이저 용접부;를 포함하는 레이저 용접장치에 있어서,상기 PCB를 상하로 진동할 수 있는 진동부;를 포함하는 레이저 용접장치.
- 제4항에 있어서,상기 진동부는 상기 하부지그를 상하로 진동하는 레이저 용접장치.
- 제4항에 있어서,상기 PCB 상면의 적어도 일부, 상기 금속 상면의 적어도 일부, 및 상기 타금속 상면의 적어도 일부 중 하나 이상을 지지하는 상부지그가 부가되며,상기 상부지그는 상기 하부지그와 같이 상하로 진동하는 레이저 용접장치.
- 제4항에 있어서,상기 PCB 상면의 적어도 일부, 상기 금속 상면의 적어도 일부, 및 상기 타금속 상면의 적어도 일부 중 하나 이상을 지지하는 상부지그가 부가되며,상기 상부지그는 탄성 및/또는 완충부재를 포함하고,상기 상부지그는 상기 하부지그와 별도로 움직이는 레이저 용접장치.
- 제1항 내지 제7항 중 어느 한 항에 있어서,상기 금속은 상기 PCB에 식장되고,상기 금속의 두께는 0.05㎜ 내지 0.2㎜인 레이저 용접장치.
- 제1항 내지 제3항 중 어느 한 항에 따른 레이저 용접장치를 사용한 용접방법에 있어서,1) 상기 금속이 상면에 배치된 상기 PCB를 상기 하부지그의 상부에 배치하는 단계;2) 상기 PCB 상면의 적어도 일부, 상기 금속 상면의 적어도 일부, 및 상기 타금속 상면의 적어도 일부 중 하나 이상을 상기 상부지그에 고정시키는 단계;3) 상기 금속과 타금속을 레이저 용접하는 단계;를 포함하는 레이저 용접방법.
- 제9항에 있어서,상기 단계 2)의 고정시키는 것은 상기 하부지그를 상하로 이동하여 진행하는 레이저 용접방법.
- 제4항 내지 제7항 중 어느 한 항에 따른 레이저 용접장치를 사용한 용접방법에 있어서,1) 상기 금속이 상면에 배치된 상기 PCB를 상기 하부지그의 상부에 배치하는 단계;2) 상기 PCB를 상하로 진동하는 단계;3) 상기 금속과 타금속을 레이저 용접하는 단계;를 포함하는 레이저 용접방법.
- 제11항에 있어서,상기 단계 3)이 상기 단계 2)보다 먼저 진행되거나, 상기 단계 2)와 상기 단계 3)이 동시에 진행될 수 있는 레이저 용접방법.
- 제11항에 있어서,상기 단계 1) 이후에1-1) 상기 PCB 상면의 적어도 일부, 상기 금속 상면의 적어도 일부, 및 상기 타금속 상면의 적어도 일부 중 하나 이상을 상기 상부지그에 고정시키는 단계;가 부가되는 레이저 용접방법.
- 제1항 내지 제7항 중 어느 한 항에 따른 레이저 용접장치를 사용하여 용접한 전기 장치.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23816350.5A EP4385652A4 (en) | 2022-05-31 | 2023-05-31 | LASER WELDING DEVICE AND WELDING METHOD USING SAME |
| CN202380013145.2A CN117794677A (zh) | 2022-05-31 | 2023-05-31 | 激光焊接设备和使用该激光焊接设备的焊接方法 |
| US18/702,148 US20240408699A1 (en) | 2022-05-31 | 2023-05-31 | Laser welding apparatus and welding method using the same |
| JP2024505281A JP7807145B2 (ja) | 2022-05-31 | 2023-05-31 | レーザー溶接装置及びこれを用いた溶接方法 |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20220066902 | 2022-05-31 | ||
| KR20220066903 | 2022-05-31 | ||
| KR10-2022-0066903 | 2022-05-31 | ||
| KR10-2022-0066902 | 2022-05-31 | ||
| KR1020230069515A KR20230166955A (ko) | 2022-05-31 | 2023-05-30 | 레이저 용접장치 및 이를 이용한 용접방법 |
| KR10-2023-0069515 | 2023-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023234689A1 true WO2023234689A1 (ko) | 2023-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/007417 Ceased WO2023234689A1 (ko) | 2022-05-31 | 2023-05-31 | 레이저 용접장치 및 이를 이용한 용접방법 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240408699A1 (ko) |
| EP (1) | EP4385652A4 (ko) |
| JP (1) | JP7807145B2 (ko) |
| WO (1) | WO2023234689A1 (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4570419A1 (en) * | 2023-10-08 | 2025-06-18 | Contemporary Amperex Technology (Hong Kong) Limited | Welding system and inspection method for welding system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100612905B1 (ko) | 2005-09-06 | 2006-08-14 | 주식회사 엠에스 오토텍 | 레이저 용접 장치 및 방법 |
| JP2010086899A (ja) | 2008-10-02 | 2010-04-15 | Nippon Avionics Co Ltd | コイン型電池の電極端子のレーザ溶接方法およびその装置 |
| KR20130116562A (ko) * | 2012-04-16 | 2013-10-24 | 에스케이이노베이션 주식회사 | 전극단자의 레이저 용접장치 |
| KR101537070B1 (ko) * | 2008-12-19 | 2015-07-16 | 재단법인 포항산업과학연구원 | 레이저 용접 장치 및 이를 이용한 레이저 용접 방법 |
| US20150303426A1 (en) * | 2012-01-12 | 2015-10-22 | Nissan Motor Co., Ltd. | Secondary battery manufacturing method, secondary battery, welding apparatus thereof |
| KR20150125387A (ko) * | 2014-04-30 | 2015-11-09 | 주식회사 엘지화학 | 레이저 용접장치 |
| KR20160104931A (ko) | 2015-02-27 | 2016-09-06 | 주식회사 엘지화학 | 전지팩용 레이저 용접 지그 |
| JP2020019046A (ja) * | 2018-08-01 | 2020-02-06 | 株式会社フジクラ | 接合方法、接合装置、及び構造体 |
| KR20220063370A (ko) * | 2020-11-10 | 2022-05-17 | 주식회사 엘지에너지솔루션 | 레이저 용접법으로 회로기판과 전극 리드를 직접 접합한 배터리 팩 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0831494B2 (ja) * | 1990-12-20 | 1996-03-27 | 松下電器産業株式会社 | Ic部品のリード接合方法 |
| JPH11347764A (ja) * | 1998-06-02 | 1999-12-21 | Sumitomo Metal Ind Ltd | 表面処理鋼板の重ね溶接の気孔防止方法 |
| JP2002066776A (ja) * | 2000-08-30 | 2002-03-05 | Showa Denko Kk | レーザビーム溶接法 |
| KR102165327B1 (ko) * | 2017-04-04 | 2020-10-13 | 주식회사 엘지화학 | 전극 리드 밀착용 지그 및 전극 리드 용접 방법 |
| EP3733339B1 (en) | 2017-12-28 | 2024-02-07 | Fujikura Ltd. | Welding structure, wiring board with metal piece |
| CN108381039B (zh) * | 2018-03-30 | 2020-02-07 | 长春理工大学 | 超声辅助激光点焊装置及方法 |
| CN209676623U (zh) * | 2019-02-25 | 2019-11-22 | 深圳市锐铂自动化科技有限公司 | 一种pcb及夹治具组装装置 |
| CN213560426U (zh) * | 2020-09-29 | 2021-06-29 | 无锡思恩电子科技有限公司 | 一种电路板焊接夹紧辅助结构 |
| CN114043156A (zh) * | 2022-01-12 | 2022-02-15 | 深圳市家鹏顺五金塑胶有限公司 | 一种充电器pcb板焊接夹具 |
-
2023
- 2023-05-31 EP EP23816350.5A patent/EP4385652A4/en active Pending
- 2023-05-31 WO PCT/KR2023/007417 patent/WO2023234689A1/ko not_active Ceased
- 2023-05-31 JP JP2024505281A patent/JP7807145B2/ja active Active
- 2023-05-31 US US18/702,148 patent/US20240408699A1/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100612905B1 (ko) | 2005-09-06 | 2006-08-14 | 주식회사 엠에스 오토텍 | 레이저 용접 장치 및 방법 |
| JP2010086899A (ja) | 2008-10-02 | 2010-04-15 | Nippon Avionics Co Ltd | コイン型電池の電極端子のレーザ溶接方法およびその装置 |
| KR101537070B1 (ko) * | 2008-12-19 | 2015-07-16 | 재단법인 포항산업과학연구원 | 레이저 용접 장치 및 이를 이용한 레이저 용접 방법 |
| US20150303426A1 (en) * | 2012-01-12 | 2015-10-22 | Nissan Motor Co., Ltd. | Secondary battery manufacturing method, secondary battery, welding apparatus thereof |
| KR20130116562A (ko) * | 2012-04-16 | 2013-10-24 | 에스케이이노베이션 주식회사 | 전극단자의 레이저 용접장치 |
| KR20150125387A (ko) * | 2014-04-30 | 2015-11-09 | 주식회사 엘지화학 | 레이저 용접장치 |
| KR20160104931A (ko) | 2015-02-27 | 2016-09-06 | 주식회사 엘지화학 | 전지팩용 레이저 용접 지그 |
| JP2020019046A (ja) * | 2018-08-01 | 2020-02-06 | 株式会社フジクラ | 接合方法、接合装置、及び構造体 |
| KR20220063370A (ko) * | 2020-11-10 | 2022-05-17 | 주식회사 엘지에너지솔루션 | 레이저 용접법으로 회로기판과 전극 리드를 직접 접합한 배터리 팩 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4385652A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7807145B2 (ja) | 2026-01-27 |
| EP4385652A1 (en) | 2024-06-19 |
| EP4385652A4 (en) | 2025-10-15 |
| JP2024531896A (ja) | 2024-09-03 |
| US20240408699A1 (en) | 2024-12-12 |
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