WO2015046711A1 - 이차전지용 단위체 적층장치 및 적층방법 - Google Patents
이차전지용 단위체 적층장치 및 적층방법 Download PDFInfo
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- WO2015046711A1 WO2015046711A1 PCT/KR2014/005021 KR2014005021W WO2015046711A1 WO 2015046711 A1 WO2015046711 A1 WO 2015046711A1 KR 2014005021 W KR2014005021 W KR 2014005021W WO 2015046711 A1 WO2015046711 A1 WO 2015046711A1
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
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- 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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a unit stacking device and a stacking method for a secondary battery, and more particularly, to a unit stacking device and a stacking method for a secondary battery that can be easily stacked using a stack jig of a plurality of different basic units.
- Secondary batteries may be classified in various ways according to the structure of the electrode assembly.
- the secondary battery may be classified into a stack type structure, a wound type (jelly roll type) structure, or a stack / fold type structure.
- the positive electrode, the separator, and the negative electrode are cut to a predetermined size, and then stacked in this order to form an electrode assembly.
- the separator is disposed between the anode and the cathode.
- the anode, the separator, the cathode, and the separator are formed in a sheet shape, and then stacked and wound up in order to form an electrode assembly.
- a full cell or a bicell is formed, and then they are wound up through a separator sheet to form an electrode assembly.
- the positive electrode, the separator, and the negative electrode are cut to a predetermined size, and then stacked in this order, a full cell or bicell can be formed (the full cell or bicell includes one or more positive electrode, separator, and negative electrode, respectively).
- electrode assemblies are stacked in a multi-stage (Stepped) so as to be embedded in a miniaturized product.
- the stacked electrode assembly 20 stacked in multiple stages according to the prior art has one or more first basic units 21 having a first size and a second larger than the first size, as shown in FIG. 1.
- One or more second basic units 22 having a size and having a first base unit 21 stacked thereon, and one or more third having a third size larger than a second size and having a second base unit 22 stacked thereon. It includes a basic unit (23).
- the stacked electrode assembly 20 stacked in multiple stages according to the prior art is difficult to accurately position the stacking positions of the basic units when the first, second and third basic units 21, 22, 23 are stacked.
- a situation in which the stacking positions of the first, second and third basic units 21, 22 and 23 are adjusted through a separate process is used.
- the present invention has been made in an effort to provide a secondary battery unit stacking apparatus and a stacking method for increasing work efficiency and productivity by stacking a plurality of units having different sizes using a stack jig. .
- the present invention is a secondary battery for laminating one or more first basic unit having a first size and one or more second basic unit having a second size larger than the first size
- a unit stacking device comprising: a first internal space having a size corresponding to the first size, and a second internal space having a size corresponding to the second size and communicating with the first internal space above the first internal space; And a stack jig provided therein, wherein the first basic unit is stacked in the first inner space through the second inner space, and then the second basic unit is stacked in the second inner space.
- the basic unit may further include a basic unit alignment unit for stacking and then aligning the basic unit for each basic unit having the same size.
- the base unit alignment unit may include a fixture supporting one side of the base unit or two adjacent sides of the base unit, and a press body for pressing the sides of the base unit not supported by the fixture. Can be.
- the apparatus may further include a basic unit transfer unit configured to transfer the basic units having the same size aligned by the basic unit alignment unit to the stack jig.
- One inner surface of the first inner space may extend vertically from one inner surface of the second inner space.
- a side surface of the stack jig may be cut from an upper surface of the stack jig to a lower surface of the stack jig along a height direction of the stack jig to communicate with the first and second internal spaces.
- the basic unit may form a four-layer structure by sequentially stacking a first electrode, a first separator, a second electrode, and a second separator.
- the basic unit may be formed by adhering the electrode and the separator to each other.
- the electrode and the separator may be adhered by applying pressure to the electrode or the separator, or by applying pressure and heat to the electrode and the separator.
- the separator may be coated with a coating material having an adhesive force on the surface.
- the coating material may be a mixture of inorganic particles and a binder polymer.
- the basic unit may be formed by repeatedly stacking the four-layer structure.
- the lamination method using the unit cell stacking device for a secondary battery of the present invention to manufacture one or more first basic unit having a first size and one or more second basic unit having a second size larger than the first size, respectively Manufacturing step; And a laminating step of inserting and stacking the first basic unit and the second basic unit into a stack jig, wherein the stack jig includes a first internal space having a size corresponding to the first size and the first internal space. A second internal space having a size corresponding to the second size and communicating with the first internal space at an upper side thereof, wherein the stacking step includes the first basic unit through the second internal space and the first internal space; The second basic unit is laminated in the second internal space.
- the method may further include an alignment step of stacking the basic units for each basic unit having the same size and then aligning the basic units.
- the aligning step may support one side of the base unit or two adjacent sides of the base unit to the fixture, and then press the sides of the base unit not supported by the fixture through a press body
- the basic unit may be aligned.
- the method may further include a transfer step of transferring the basic units of the same size aligned by the alignment step to the stack jig.
- One inner surface of the first inner space may extend vertically from one inner surface of the second inner space.
- the basic unit may be manufactured in a four-layer structure in which a first electrode, a first separator, a second electrode, and a second separator are sequentially stacked.
- the basic unit may be manufactured by adhering the electrode and the separator to each other.
- the basic unit may be manufactured by adhering the electrode and the separator to each other by laminating.
- the separator may be coated with a coating material having an adhesive force on the surface, the coating material may be a mixture of inorganic particles and a binder polymer.
- the basic unit may be manufactured by repeatedly stacking the four-layer structure.
- FIG. 1 is a view showing a stacked electrode assembly stacked in multiple stages according to the prior art.
- FIG. 2 is a view showing a first structure of an electrode assembly according to the present invention.
- FIG. 3 is a view showing a second structure of an electrode assembly according to the present invention.
- FIG. 4 is a process chart showing a manufacturing process of the electrode assembly according to the present invention.
- FIG. 5 is a view showing a unit stacking device for a secondary battery according to the present invention.
- Figure 6 is a view showing the basic unit alignment portion of the unit stacking device for a secondary battery according to the present invention.
- FIG. 7 is a view illustrating a state of use of the basic unit alignment portion of the unit stacking device for a secondary battery according to the present invention.
- FIG. 8 is a plan view showing a stack jig of the unit stacking device for a secondary battery according to the present invention.
- FIG. 9 is a cross-sectional view showing a stack jig of the unit stacking device for a secondary battery according to the present invention.
- FIG. 10 is a flowchart illustrating a method of stacking unit cells for a secondary battery according to the present invention.
- FIG. 11 is a view showing a basic unit stacking step of the method for stacking unit cells for a secondary battery according to the present invention.
- FIG. 12 is a view showing a basic unit attachment step of the method for stacking unit cells for a secondary battery according to the present invention.
- FIG. 13 is a view showing an electrode assembly stacked by the method for stacking unit cells for a secondary battery according to the present invention.
- FIG. 14 is a cross-sectional view showing another embodiment of a unit stacking device for a secondary battery according to the present invention.
- the unit stacking device for a secondary battery according to the present invention can be easily stacked in multiple stages by inserting a plurality of basic units having different sizes into a stack jig, thereby increasing work efficiency and productivity.
- a configuration in which at least one first basic unit having a first size and at least one second basic unit having a second size larger than the first size is laminated in one embodiment
- a plurality of basic units having different sizes may be stacked using a stack jig.
- the electrode assembly 100 of the present invention includes one or more first basic units 110 having a first size, and a second having a second size larger than the first size. It includes two basic unit 120, the first and second basic unit 110, 120 is laminated in multiple stages through the unit stacking device 200 for secondary batteries.
- the first and second basic units 110 and 120 are formed by sequentially stacking a first electrode, a first separator, a second electrode, and a second separator, and thus, the first and second basic units 110. 120 basically has a four-layer structure.
- the first basic unit 110 has a first size, and includes a first electrode 111, a first separator 112, a second electrode 113, and a second separator 114.
- first electrode 111, the first separator 112, the second electrode 113, and the second separator 114 are disposed from the upper side to the lower side. It can be formed sequentially stacked.
- the first electrode 111 and the second electrode 113 are opposite electrodes.
- the first electrode 111 is an anode
- the second electrode 113 is a cathode. Of course, this may be the opposite.
- the second basic unit 120 has a second size larger than the first size of the first basic unit 110.
- the first electrode 121, the first separator 122, The second electrode 123 and the second separator 124 are sequentially stacked from the upper side to the lower side, or referring to FIG. 3, the first electrode 121, the first separator 122, and the second electrode 123.
- the second separator 124 may be formed by being sequentially stacked from the lower side to the upper side.
- the first electrode 121 and the second electrode 123 are opposite electrodes.
- the first electrode 121 is an anode
- the second electrode 123 is a cathode. Of course, this may be the opposite.
- the first and second basic units 110 and 120 when the first and second basic units 110 and 120 are stacked, electrodes opposite to each other are disposed with a separator interposed therebetween.
- the first and second basic units 110 and 120 may include the first electrode 111, the first separator 112, the second electrode 113, the second separator 114, and the first electrode ( 121, the first separator 122, the second electrode 123, and the second separator 124 are sequentially stacked.
- first basic unit and a second basic unit are illustrated in FIGS. 2 and 3, a plurality of first basic units and a plurality of second basic units may be stacked.
- the positive electrode, the negative electrode, and the separator usually have different sizes, but the separator has the largest size for insulation. Accordingly, the size of the basic unit described herein is based on the size of the separator. (If you make another element larger, it can be explained based on that element.)
- the base unit having such a laminated structure may be formed by the following process (see FIG. 4).
- the first basic unit 110 prepares a first electrode material 131, a first separator material 132, a second electrode material 133, and a second separator material 134.
- the electrode materials 131 and 133 are cut to a predetermined size to form the electrodes 111 and 113 as will be described below.
- separator materials 132 and 134 In order to automate the process, the electrode material and the separator material preferably have a form wound on a roll.
- the first electrode material 131 is cut into a predetermined size through the cutter C 1 .
- the second electrode material 133 is also cut into a predetermined size through the cutter C 2 .
- a first electrode material 131 of a predetermined size is supplied onto the first separator material 132.
- a second electrode material 133 of a predetermined size is also supplied over the second separator material 134. Then all materials are fed together into the laminators (L 1 , L 2 ).
- the first basic unit 110 is formed.
- Several first basic units may be stacked. However, if the electrode and the separator constituting the first basic unit 110 are separated from each other, it will be very difficult to repeatedly stack the first basic unit 110. Therefore, when forming the first basic unit 110, it is preferable to adhere the electrode and the separator to each other.
- the laminators L 1 and L 2 are used to adhere the electrodes and the separators to each other as described above with reference to FIG. 4. That is, the laminators L 1 and L 2 apply pressure to the materials or heat and pressure to bond the electrode material and the separator material to each other. As such, the electrode material and the separator material are adhered to each other in the laminators L 1 and L 2 . By such adhesion, the first basic unit 110 may maintain its shape more stably.
- first separator material 132 and the second separator material 134 are cut together to a first size through the cutter C 3 .
- the first basic unit 110 may be formed.
- various tests may be performed on the first basic unit 110 as necessary. For example, inspections such as thickness inspection, vision inspection, and short inspection may be additionally performed.
- the separator may be coated with a coating material having an adhesive force.
- the coating material may be a mixture of inorganic particles and a binder polymer.
- the inorganic particles may improve thermal stability of the separator. That is, the inorganic particles can prevent the membrane from shrinking at a high temperature.
- the binder polymer may fix the inorganic particles. Due to the inorganic particles, a predetermined pore structure may be formed on the coating layer formed on the surface of the separator. Due to the pore structure, even when the inorganic particles are coated on the separator, ions can smoothly move from the positive electrode to the negative electrode.
- the binder polymer may stably maintain the inorganic particles in the separator to improve the mechanical stability of the separator. Moreover, the binder polymer can more stably bond the separator to the electrode. (This coating is called an SRS coating.)
- the separator may be formed of a polyolefin-based separator substrate.
- electrodes 111 and 113 are positioned on both surfaces of the first separator 112, whereas electrodes 113 are positioned only on one surface of the second separator 114. Therefore, a coating material may be coated on both surfaces of the first separator 112, and a coating material may be coated on only one surface of the second separator 114. That is, the first separator 112 may be coated with a coating material on both sides facing the first electrode 111 and the second electrode 113, and the second separator 114 may face the second electrode 113. The coating material can be coated only on one side.
- the second separator 114 may be coated on only one surface thereof.
- the plurality of first basic units 110 may be bonded to each other by a heat press method, or the first basic units 110 and the second basic bodies 120 may be bonded to each other by a method of heat press. Therefore, the second separator 114 may be coated on both surfaces as necessary. That is, the second separator 114 may also be coated with a coating material on one surface facing the second electrode 113 and the opposite surface thereof. In this case, the first basic unit 110 positioned above and the second basic unit 120 positioned directly below may be adhered to each other through a coating material on the outer surface of the second separator 114.
- a coating material having an adhesive force is applied to the separator, it is not preferable to directly press the separator with a predetermined object.
- the separator typically extends longer than the electrode. Therefore, an attempt may be made to couple the ends of the first separator 112 and the ends of the second separator 114 with each other. For example, an attempt may be made to fuse the end of the first separator 112 and the end of the second separator 114 with ultrasonic welding. However, such ultrasonic welding needs to press the object directly with a horn. However, when the end of the separator is directly pressed by the horn in this manner, the horn may adhere to the separator due to the coating material having the adhesive force. This can lead to device failure. Therefore, when a coating material having an adhesive force is applied to the separator, it is not preferable to apply a process of directly applying pressure to the separator with a predetermined object.
- the first basic unit 110 does not have to have a four-layer structure.
- the first basic unit 110 may include a first electrode 111, a first separator 112, a second electrode 113, a second separator 114, a first electrode 111, and a first separator.
- the second layer 113, the second electrode 113, and the second separator 114 may be formed to have an eight-layer structure that is sequentially stacked. That is, the first basic unit 110 may have a structure in which a four-layer structure is repeatedly stacked.
- the second basic unit 120 is formed in the same manner as the manufacturing process of the first basic unit 110 described above, but is formed in a second size larger than the first size of the first basic unit 110.
- the second basic unit 120 is different in that it is formed in a second size larger than the first size of the first basic unit 110, overlapping the same as the manufacturing process of the first basic unit 110 The description will be omitted.
- the first and second basic units 110 and 120 manufactured by the above method are transferred to the secondary battery unit stacking apparatus 200 of the present invention through the vacuum conveyor 30.
- the secondary battery unit stacking apparatus 200 inserts a plurality of basic units having different sizes from small to large in order and stacks them in multiple stages, thereby stacking the basic units in multiple stages without additional position control. have.
- the first and second basic units 110 and 120 are stacked by the basic units having the same size, and then aligned. And a stack jig 230 for inserting and stacking the aligned first and second units 110 and 120 in the order of the smallest to the largest.
- the basic unit alignment unit 210 supports a side of one side of the basic unit 110 and 120 or two adjacent sides of the basic unit 110 and 120. 211, and a pressing body 212 for pressing side surfaces of the base unit 110 and 120 not supported by the fixing body 211.
- the fixed body 211 supports a main body 211a in which the basic units 110 and 120 are disposed, and one side or two adjacent sides of the basic unit bodies 110 and 120 disposed in the main body 211a. And a supporting member 211b.
- the pressurizing member 212 is provided on the side of the main body 211a without the support piece 211b and pressurizes the side surfaces of the basic units 110 and 120 that are not supported by the fixing member 211. And a forward device 212b for advancing the pressing member 212a to pressurize the side surfaces of the basic units 110 and 120.
- the basic unit alignment unit 210 arranges the basic units 110 and 120 on the main body 211a of the fixed body 211, and then supports the basic units 110 and 120 to the support member 211b. (See FIG. 6). Then, the forwarding device 212b of the pressing body 212 is operated to advance the pressing member 212a, whereby the pressing unit 212a is not supported by the fixing body 211. ) By pressing the side of the base unit 110 (120) (see Figure 7).
- the base unit alignment unit 210 may insert the base unit 110, 120 in the stack jig 230 by inserting the base unit 110, 120 at the same angle and position. .
- the pressing body 212 is set to operate at the same time when two or more are formed in the fixed body 211, this can be more quickly and accurately aligned the basic unit (110, 120).
- the pressing body 212 may further include a spring between the pressing member 212a and the forwarding device 212b, the pressing member 212a is advanced by the forwarding device 212b through the spring is the basic unit 110 By pressing elastically 120) to prevent the occurrence of defects such as damage and folding of the basic unit (110, 120).
- a basic unit alignment unit 210 for example, after aligning a plurality of first basic units, and transferred them to a stack jig 230 to be described later, and then aligning a plurality of second basic units Next, they can be transferred to the stack jig.
- it may further include a basic unit transfer unit 220 for transferring the basic unit (110, 120) of the same size aligned by the basic unit alignment unit 210 to the stack jig 230.
- the basic unit transfer unit 220 absorbs the aligned basic units 110 and 120 using a vacuum suction force, and then transfers the stacked unit 110 to the stack jig 230. When the suction force is removed, the basic units 110 and 120 fall into the stack jig 230 while falling vertically.
- the basic unit transfer part 220 may use a robot arm having a vacuum suction force, and stack the basic unit 110 and 120 aligned by the basic unit alignment unit 210 using the robot arm. 230 can be stably transferred.
- the robot device having a vacuum adsorption force is widely used in the industrial field, a detailed description thereof will be omitted.
- the stack jig 230 includes one or more first basic units 110 having a first size and one or more second basic units having a second size larger than the first size.
- the first internal space 231 having a size corresponding to the first size, and the first internal space 231 above the first internal space 231 and communicate with the second A second inner space 232 having a size corresponding to the size is provided.
- the stack jig 230 may easily stack the first and second units 110 and 120 through the first internal space 231 and the second internal space 232.
- one inner surface of the first inner space 231 may extend vertically from one inner surface of the second inner space 232. That is, one side inner surfaces of the first inner space 231 and the second inner space 232 corresponding to each other extend in a vertical shape, vertically and vertically, as shown in FIG. One surface of the units 110 and 120 may be aligned on the same line.
- the side surface of the stack jig 230 is cut from the top surface of the stack jig 230 to the bottom surface along the height direction of the stack jig 230 to cut through the first and second internal spaces 231 and 232 ( 233 may be formed, and a plurality of cutting holes 233 may be formed on the side surface of the stack jig 230.
- the fixing tape 240 is attached to the first and second units 110 and 120 stacked in the first and second internal spaces 231 and 232 through the cutting hole 233 to attach the first and second
- the two units 110 and 120 may be fixed so as not to move in a stacked state.
- the secondary battery unit stacking apparatus 200 having the configuration as described above is based on the first basic unit 110 having a first size and the second basic unit 120 having a second size larger than the first size.
- the unit alignment unit 210 the basic unit transfer unit 220 and the stack jig 230 can be easily laminated, thereby increasing the efficiency and productivity of the work.
- At least one first basic unit 110 having a first size and at least one second having a second size larger than the first size A manufacturing step (S10) for manufacturing the basic unit 120, respectively, and a stacking step (S40) for laminating the first basic unit 110 and the second basic unit 120 in a stack jig.
- the basic unit (110, 120) is stacked by the basic unit of the same size and then aligned by the alignment step (S20) and the alignment step (S20) It may further include a transfer step (S30) for transferring the basic unit (110, 120) of the same size to the stack jig of the stacking step (S40).
- the manufacturing step S10 includes the basic units 110 and 120 having a four-layer structure in which the first electrode, the first separator, the second electrode, and the second separator are sequentially stacked.
- the manufacturing step (S10) it is possible to manufacture the basic unit (110, 120) by adhering the electrode and the separator to each other, thereby maintaining the basic unit (110, 120) more stably in its shape. .
- the first and second basic units 110 and 120 may be manufactured by adhering an electrode and a separator to each other by laminating (L 1 , L 2 ). have.
- first and second separators which are the separators in the basic units 110 and 120, are coated with a coating material having an adhesive force on the surface thereof, and the separators may be bonded to each other without a separate adhesive material.
- the coating material coated on the first and second separators which is a separator
- the coating material coated on the first and second separators is a mixture of inorganic particles and a binder polymer, and when the first and second separators are heated in close contact with each other, the binder is melted and the first and second separators are melted. 2
- the separator can be bonded.
- the four-layer structure is repeatedly stacked to manufacture the first and second basic units 110 and 120 which are basic units, and the manufactured first and second basic units 110 and 120.
- the alignment step S20 supports one side of the base unit 110 and 120 or two adjacent sides of the base unit 110 and 120 to the fixture 211. As illustrated in FIG. 7, the side surfaces of the base units 110 and 120 that are not supported by the fixture 210 are pressed through the press body 221 to align the base units 110 and 120.
- the basic units 110 and 120 when the basic units 110 and 120 are inserted into the stack jig 230 without being aligned, the basic units 110 and 120 may not be inserted into the correct insertion space of the stack jig 230 and may be caught in other spaces. As the stacking failure occurs, the process may need to be checked and corrected by the operator at any time.
- the transfer step S30 of transferring the aligned basic units having the same size to the stack jig 230 is performed using the basic unit transfer unit 220.
- the transfer step S30 includes vacuum adsorption of the first basic unit 110 aligned through the basic unit transfer unit 220, and then removes the adsorptive force while transferring the stack unit 230 to the stack jig 230. 1 the basic unit 110 is dropped toward the upper surface of the stack jig 230.
- the aligned second basic unit 110 is vacuum-adsorbed and then the suction force is removed while being transferred to the stack jig 230 to drop the second basic unit 110 toward the upper surface of the stack jig 230. .
- the first basic unit 110 and the second basic unit 120 sequentially transferred by the transfer step S30 are inserted into the stack jig 230 to perform the stacking step S40.
- the stack jig 230 may include a first internal space 231 having a size corresponding to the first size of the first basic unit 110 and a first internal space 231 above the first internal space 231. And a second internal space 232 having a size corresponding to the second size of the second basic unit 120.
- the first basic unit 110 transferred by the basic unit transfer unit 220 is transferred to the first inner space 231 through the second inner space 232.
- the second basic unit 120 which is transferred by the basic unit transfer unit 220, is then stacked in the second internal space 232.
- the stacking step S40 may further include an attaching step S50 for fixing the first and second basic units 110 and 120 stacked on the stack jig 230.
- FIG. 12 the upper surface of the first and second basic units 110 and 120 stacked on the stack jig 230 through the cutting holes 233 of the stack jig 230 is illustrated in FIG. 12.
- the fixing tape 240 is attached to be connected to the bottom surface, and the first and second basic units 110 and 120 are fixed by the fixing tape 240 so as not to be separated.
- the electrode assembly 100 having the first and second basic units 110 and 120 stacked in multiple stages as illustrated in FIG. 13 may be manufactured.
- FIG. 14 is a view showing another embodiment of a unit stacking device for a secondary battery according to the present invention.
- the unit stacking device for a secondary battery may stack n or more basic units having different sizes from each other by using a stack jig having n internal spaces, thereby manufacturing an electrode assembly having a structure of at least n steps.
- the secondary battery unit stacking apparatus further includes n internal spaces communicating with each other while gradually increasing in size to the upper side of the second internal space of the stack jig of the above-described embodiment, and corresponding to the n internal spaces.
- the n basic units having a size to be stacked are sequentially stacked in the n inner spaces after the first and second basic units of the above-described embodiment in the order of the small basic units to the large basic units.
- the stack jig 230 ′ has a third internal space 234 increasing in size above the second internal space 232. Further provided, and further manufacturing a third unit 130 having a size corresponding to the third internal space (234).
- the third unit 130 manufactured as described above is stacked in the third internal space 234 after the first and second basic units 110 ′ and 120 ′, and thus, the first unit 130 is stacked in the stack jig 230 ′.
- the second and third basic units 110 ′, 120 ′ and 130 may be stacked in three stages, and when the fixing tape 240 ′ is attached, the electrode assemblies stacked in three stages may be manufactured.
- the stacking method using the unit stacking device for a secondary battery according to the present embodiment having such a configuration is the same as the stacking method of the above-described embodiment, except that in the manufacturing step added to the n inner space of the stack jig 230 ′ Further manufacturing n basic units having a corresponding size, and in the stacking step, the n basic units are sequentially ordered from the small basic units to the large basic units in the order of the first and second basic units, followed by the n internal spaces. Laminated.
- a unit stacking device for a secondary battery may have a size corresponding to the first, second, and third internal spaces 231, 232, 234 of the stack jig 230 ′.
- the first, second and third units 110 ′, 120 ′ and 130, respectively, are manufactured.
- the fixing tape 240 ' is attached to the first, second and third units 110', 120 ', 130 to be connected from the upper surface to the lower surface, thereby manufacturing an electrode assembly stacked in three stages. do.
- this example has described a secondary battery unit stacking device and a laminating method for manufacturing an electrode assembly stacked in three stages, the secondary cell unit stacking device and a stacking method for manufacturing an electrode assembly stacked in three or more steps in this way Also, it should be construed that all fall within the scope of the present invention.
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Claims (26)
- 제1 크기를 가지는 한 개 이상의 제1 기본 단위체와 상기 제1 크기보다 큰 제2 크기를 가지는 한 개 이상의 제2 기본 단위체를 적층하는 이차전지용 단위체 적층장치로서,상기 제1 크기에 대응되는 크기의 제1 내부 공간과, 상기 제1 내부 공간의 상측에서 상기 제1 내부 공간과 통하고 상기 제2 크기에 대응되는 크기의 제2 내부 공간을 구비하는 스택 지그를 포함하며,상기 제1 기본 단위체는 상기 제2 내부 공간을 통해 상기 제1 내부 공간에 적층되고, 이어서 상기 제2 기본 단위체는 상기 제2 내부 공간에 적층되는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 1에 있어서,상기 기본 단위체를 같은 크기의 기본 단위체별로 적층한 다음 정렬시키는 기본 단위체 정렬부를 더 포함하는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 2에 있어서,상기 기본 단위체 정렬부는 상기 기본 단위체의 한 개의 측면 또는 상기 기본 단위체의 서로 인접한 두 개의 측면을 지지하는 고정체, 및 상기 고정체에 의해 지지되지 않는 상기 기본 단위체의 측면들을 가압하는 가압체를 포함하는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 2에 있어서,상기 기본 단위체 정렬부에 의해 정렬된 같은 크기의 기본 단위체들을 상기 스택 지그로 이송하는 기본 단위체 이송부를 더 포함하는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 1에 있어서,상기 제1 내부 공간의 일측 내면은 상기 제2 내부 공간의 일측 내면으로부터 수직하게 연장되는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 1에 있어서,상기 스택 지그의 측면에는 상기 스택 지그의 높이 방향을 따라 상기 스택 지그의 상면으로부터 하면까지 절개되어 상기 제1 및 제2 내부 공간과 통하는 절개홀이 형성되는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 1에 있어서,상기 기본 단위체는 제1 전극, 제1 분리막, 제2 전극 및 제2 분리막이 순차적으로 적층되어 4층 구조를 형성하는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 7에 있어서,상기 기본 단위체는 상기 전극과 상기 분리막이 서로 접착되어 형성되는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 8에 있어서,상기 전극과 상기 분리막의 접착은, 상기 전극과 상기 분리막에 압력을 가하는 것에 의한 접착, 또는 상기 전극과 상기 분리막에 압력과 열을 가하는 것에 의한 접착인 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 8에 있어서,상기 분리막은 접착력을 가지는 코팅 물질이 표면에 코팅되는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 10에 있어서,상기 코팅 물질은 무기물 입자와 바인더 고분자의 혼합물인 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 7에 있어서,상기 기본 단위체는 상기 4층 구조가 반복적으로 적층되어 형성되는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 청구항 1에 있어서,상기 스택 지그는 상기 제2 내부 공간의 상측으로 점차 크기가 증가하면서 서로 통하는 n개의 내부 공간을 더 구비하며,상기 n개의 내부 공간에 대응하는 크기를 가지는 n개의 기본 단위체는 작은 기본 단위체로부터 큰 기본 단위체의 순서로 상기 제1 및 제2 기본 단위체에 이어서 상기 n개의 내부 공간에 차례로 적층되는 것을 특징으로 하는 이차전지용 단위체 적층장치.
- 제1 크기를 가지는 한 개 이상의 제1 기본 단위체와 상기 제1 크기보다 큰 제2 크기를 가지는 한 개 이상의 제2 기본 단위체를 각각 제조하는 제조 단계; 및상기 제1 기본 단위체와 상기 제2 기본 단위체를 스택 지그에 삽입하여 적층하는 적층 단계를 포함하며,상기 스택 지그는 상기 제1 크기에 대응되는 크기의 제1 내부 공간과, 상기 제1 내부 공간의 상측에서 상기 제1 내부 공간과 통하고 상기 제2 크기에 대응되는 크기의 제2 내부 공간을 구비하고,상기 적층 단계는 상기 제1 기본 단위체를 상기 제2 내부 공간을 통해 상기 제1 내부 공간에 적층하고, 이어서 상기 제2 기본 단위체를 상기 제2 내부 공간에 적층하는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 14에 있어서,상기 기본 단위체를 같은 크기의 기본 단위체별로 적층한 다음 정렬시키는 정렬 단계를 더 포함하는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 15에 있어서,상기 정렬 단계는, 상기 기본 단위체의 한 개의 측면 또는 상기 기본 단위체의 서로 인접한 두 개의 측면을 고정체에 지지시킨 다음, 상기 고정체에 의해 지지되지 않는 상기 기본 단위체의 측면들을 가압체를 통해 가압하여 상기 기본 단위체를 정렬시키는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 15에 있어서,상기 정렬 단계에 의해 정렬된 같은 크기의 기본 단위체들을 상기 스택 지그로 이송하는 이송 단계를 더 포함하는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 14에 있어서,상기 제1 내부 공간의 일측 내면은 상기 제2 내부 공간의 일측 내면으로부터 수직하게 연장되는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 14에 있어서,상기 스택 지그의 측면에서 상기 스택 지그의 높이 방향을 따라 상기 스택 지그의 상면으로부터 하면까지 절개되어 형성되는 절개홀을 통해 상기 스택 지그에 적층된 기본 단위체들에 고정 테이프를 부착하는 부착 단계를 더 포함하는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 14에 있어서,상기 제조 단계는 제1 전극, 제1 분리막, 제2 전극 및 제2 분리막이 순차적으로 적층되는 4층 구조로 상기 기본 단위체를 제조하는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 20에 있어서,상기 제조 단계는 상기 전극과 상기 분리막을 서로 접착시켜 상기 기본 단위체를 제조하는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 21에 있어서,상기 제조 단계는 라미네이팅에 의해 상기 전극과 상기 분리막을 서로 접착시켜 상기 기본 단위체를 제조하는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 21에 있어서,상기 분리막은 접착력을 가지는 코팅 물질이 표면에 코팅되는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 23에 있어서,상기 코팅 물질은 무기물 입자와 바인더 고분자의 혼합물인 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 20에 있어서,상기 제조 단계는 상기 4층 구조를 반복적으로 적층하여 상기 기본 단위체를 제조하는 것을 특징으로 하는 이차전지용 단위체 적층방법.
- 청구항 14에 있어서,상기 스택 지그는 상기 제2 내부 공간의 상측으로 점차 크기가 증가하면서 서로 통하는 n개의 내부 공간을 더 구비하며,상기 제조 단계는 상기 n개의 내부 공간에 대응하는 크기를 가지는 n개의 기본 단위체를 더 제조하고,상기 적층 단계는, 상기 n개의 기본 단위체를 작은 기본 단위체로부터 큰 기본 단위체의 순서로 상기 제1 및 제2 기본 단위체에 이어서 상기 n개의 내부 공간에 차례로 적층하는 것을 특징으로 하는 이차전지용 단위체 적층방법.
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EP14784180.3A EP2879223B1 (en) | 2013-09-27 | 2014-06-05 | Stack apparatus and stack method of unit for secondary battery |
CN201480001176.7A CN104718654B (zh) | 2013-09-27 | 2014-06-05 | 二次电池用单体的层叠装置及层叠方法 |
JP2015539525A JP6091634B2 (ja) | 2013-09-27 | 2014-06-05 | 二次電池用単位体積層装置及び積層方法 |
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- 2014-06-05 WO PCT/KR2014/005021 patent/WO2015046711A1/ko active Application Filing
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KR20150035271A (ko) | 2015-04-06 |
JP2015531988A (ja) | 2015-11-05 |
KR101625717B1 (ko) | 2016-05-30 |
TW201530843A (zh) | 2015-08-01 |
EP2879223A1 (en) | 2015-06-03 |
CN104718654A (zh) | 2015-06-17 |
EP2879223A4 (en) | 2016-01-06 |
EP2879223B1 (en) | 2017-09-06 |
TWI501442B (zh) | 2015-09-21 |
CN104718654B (zh) | 2017-03-08 |
JP6091634B2 (ja) | 2017-03-08 |
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