KR102512993B1 - Manufacturing Method for All Solid type Battery and Apparatus for The Same - Google Patents

Abstract

The present invention provides a first electrode plate stacking step of transferring and stacking the first electrode plate to a stack position, and coating a solid electrolyte slurry on the upper surface of the first electrode plate to form a first solid electrolyte layer. A second electrode plate stacking step of transferring and stacking a second electrode plate on top of the first electrode plate located at the stack position, and coating the solid electrolyte slurry on the upper surface of the second electrode plate with a second solid A solid electrolyte second coating step of forming an electrolyte layer and a laminated structure in which the first electrode plate, the first solid electrolyte layer, the second electrode plate, and the second solid electrolyte layer are repeatedly stacked are inserted into the compressed film case and packed Disclosed is an all-solid-state battery manufacturing method including a laminated structure packing step and a manufacturing apparatus therefor.

Description

All-solid-state battery manufacturing method and apparatus therefor {Manufacturing Method for All Solid type Battery and Apparatus for The Same}

The present invention relates to a method for manufacturing an all-solid-state battery using a solid electrolyte and an apparatus therefor.

A lithium secondary battery generally includes a negative electrode plate coated with a negative electrode active material, a positive electrode plate coated with a positive electrode active material, and an electrolyte between the negative electrode plate and the positive electrode plate. The lithium secondary battery has been using a liquid electrolyte in a liquid state until now. The lithium secondary battery has safety problems caused by leakage of liquid electrolyte or generation of gas during use. Recently, in order to solve the problems of the liquid electrolyte, the need for developing a solid electrolyte has emerged and is being developed. The solid electrolyte may enable improved safety, improved manufacturing processes, structure optimization, and implementation of high energy density and power density in lithium secondary batteries compared to liquid electrolytes.

Since the all-solid-state battery, which is a lithium secondary battery including the solid electrolyte, uses a solid electrolyte instead of a liquid electrolyte, a change in the existing lithium secondary battery manufacturing process is required. That is, the secondary battery including the liquid electrolyte is manufactured by winding or stacking a negative electrode plate, a positive electrode plate, and a separator, inserting the liquid electrolyte into a can or pouch, and then injecting the liquid electrolyte. In contrast, since the solid electrolyte cannot be injected into a can or pouch, it is necessary to stack or coat the positive and negative plates together during winding or stacking. Therefore, the all-solid-state battery requires a manufacturing device capable of coating a solid electrolyte in the process of stacking the positive and negative plates.

An object of the present invention is to provide a method for manufacturing an all-solid-state battery capable of batch-manufacturing all-solid-state batteries in a continuous process and an apparatus therefor.

The all-solid-state battery manufacturing method of the present invention includes a first electrode plate stacking step of transferring and stacking the first electrode plate to a stack position, coating a solid electrolyte slurry on the upper surface of the first electrode plate to form a first solid electrolyte layer A solid electrolyte first coating step, a second electrode plate stack step of transferring and stacking a second electrode plate on top of the first electrode plate located in the stack position, and applying the solid electrolyte slurry to the upper surface of the second electrode plate A solid electrolyte second coating step of forming a second solid electrolyte layer to be coated on, and a laminated structure in which the first electrode plate, the first solid electrolyte layer, the second electrode plate, and the second solid electrolyte layer are repeatedly laminated is formed into a compressed film. It is characterized in that it includes a laminated structure packing step of inserting into a case and packing.

In addition, the all-solid-state battery manufacturing method includes an isobaric compression step of isostatically compressing the compression film case into which the laminated structure is inserted using a pressure transmission medium, and a heat pressing step of pressing by applying pressure to the upper and lower surfaces of the laminated structure can include more.

In addition, the all-solid-state battery manufacturing method includes the first electrode plate stacking step, the solid electrolyte first coating step, the second electrode plate stacking step, the solid electrolyte second coating step, and the laminate structure packing step. The including step may be performed in a dry room atmosphere.

In addition, the all-solid-state battery manufacturing method further includes a first electrode plate aligning step of transferring and aligning the first electrode plate to a first alignment position before the first electrode plate stacking step, and the second electrode A second electrode plate aligning step of transferring and aligning the second electrode plate to a second aligning position before the plate stacking step, wherein the first electrode plate aligning step and the second aligning step are performed in a dry room It can be done in an atmosphere.

In addition, the step of aligning the first electrode plate lifts the first electrode plate accommodated in a first magazine and transfers it to the first align position, and the step of aligning the second electrode plate includes the step of aligning the second electrode plate accommodated in a second magazine. The electrode plate is lifted and transferred to the second alignment position, and the first magazine and the second magazine may be introduced through a separate load lock chamber maintained in a dry room atmosphere.

In the first solid electrolyte coating step and the second solid electrolyte coating step, the solid electrolyte slurry may be coated using a doctor blade method or a slot die method.

In addition, in the all-solid-state battery manufacturing method, in the first solid electrolyte coating step and the second solid electrolyte coating step, the first solid electrolyte layer and the second solid electrolyte layer may be coated to a thickness of 20.0 to 200 μm, respectively.

In addition, in the packing of the laminated structure, the compressed film case into which the laminated structure is inserted may be evacuated and then sealed. In addition, the heat pressing step may be performed in a heating chamber in the range of 80 ~ 120 ℃.

In addition, the isostatic compression step may further include cleaning the pressure transmission medium buried outside the compression film case, and the heat pressing step may press the laminated structure through the compression film case.

The isobaric compression step further includes removing the compression film case buried with the pressure transmission medium from the laminated structure and inserting the laminated structure into a new outer film case, and the heat pressing step includes the outer film case. It is possible to press the laminated structure through.

In addition, the all-solid-state battery manufacturing apparatus of the present invention adsorbs the first electrode plate and transfers it to the first align position, and then adsorbs the first align transfer module for aligning the front, rear, left, and right directions, and the second electrode plate. It includes a second align module and a stack plate for aligning the front, rear, left, and right directions after transferring to 2 align positions, and is alternately transferred to the stack position from the first align transfer module and the second align transfer module. A stacking module supporting the first electrode plate and the second electrode plate, and an electrolyte forming a solid electrolyte layer by coating a solid electrolyte slurry on an upper surface of the first electrode plate or the second electrode plate transported to the stack position A packing module for inserting a coating module, a laminated structure formed by alternately stacking the first electrode plate, the solid electrolyte layer, the second electrode plate, and the solid electrolyte layer into the compression film case, and the compression film using a pressure transmission medium. It is characterized in that it comprises an isobaric compression module for isostatically compressing the laminated structure accommodated inside the case, and a heating pressing module for pressing upper and lower surfaces of the isostatically compressed laminated structure.

In addition, the all-solid-state battery manufacturing apparatus further includes a first magazine module for stacking and supplying the first electrode plate and a second magazine module for stacking and supplying the second electrode plate, and the all-solid-state battery manufacturing apparatus It can be installed in a dry room atmosphere.

In addition, the all-solid-state battery manufacturing apparatus may further include a cleaning module for cleaning the pressure transmission medium buried on the surface of the compression film case while being isostatically compressed in the isostatic compression module.

In addition, the all-solid-state battery manufacturing apparatus may further include a separation and insertion module for separating the compressed film case from the laminated structure and inserting the laminated structure into a new exterior film case after isostatic compression in the isostatic compression module. .

In addition, the all-solid-state battery manufacturing apparatus further includes a robot transport module located between the packing module, the isostatic compression module, and the cleaning module to transport the compressed film case into which the laminated structure is inserted, to be configured as one integrated facility. can

In addition, in the all-solid-state battery manufacturing apparatus, the first align transfer module and the second align transfer module are disposed symmetrically with respect to the stacking module, and the first align transfer module and the second align transfer module The module and the stacking module are provided in two sets, and may be positioned symmetrically up and down with respect to the isostatic compression module and the heat pressing module.

The all-solid-state battery manufacturing method and apparatus for the same of the present invention can collectively manufacture all-solid-state batteries in a continuous process.

1 is a process chart of an all-solid-state battery manufacturing method according to an embodiment of the present invention.
2 is a block diagram of an all-solid-state battery manufacturing apparatus for an all-solid-state battery manufacturing method according to an embodiment of the present invention.

Hereinafter, an all-solid-state battery manufacturing method and an all-solid-state battery manufacturing apparatus for the same of the present invention will be described in more detail through examples and accompanying drawings.

First, a method for manufacturing an all-solid-state battery according to an embodiment of the present invention will be described.

1 is a process chart for a method for manufacturing an all-solid-state battery according to an embodiment of the present invention.

Referring to FIG. 1, the method for manufacturing an all-solid-state battery according to an embodiment of the present invention includes a first electrode plate stack step (S20), a first solid electrolyte coating step (S30), and a second electrode plate stack step (S50). and a solid electrolyte second coating step (S60), a laminated structure packing step (S70), an isostatic compression step (S80), and a heat pressing step (S90). In addition, the all-solid-state manufacturing method may further include a first electrode plate aligning step ( S10 ) and a second electrode plate aligning step ( S40 ).

In the all-solid-state battery manufacturing method, the entire process may be performed in a dry room atmosphere. In particular, in the all-solid-state battery manufacturing method, the first electrode plate alignment step (S10), the second electrode plate alignment step (S40), and the solid electrolyte first coating step (S30), which are processes in which the solid electrolyte is exposed to the atmosphere, A space in which the second solid electrolyte coating step (S60) is performed may be performed in a dry room atmosphere. In addition, the entire process of the all-solid-state battery manufacturing method may be performed in a dry room atmosphere. Here, the dry room atmosphere means an atmosphere of low humidity capable of controlling internal moisture, and is an atmosphere capable of suppressing the generation of hydrogen sulfide even when moisture is sufficiently removed and the solid electrolyte is exposed. Humidity of the dry room atmosphere may be maintained at 45% or less.

The all-solid-state battery manufacturing method repeatedly performs a first electrode plate stacking step (S20), a first solid electrolyte coating step (S30), a second electrode plate stacking step (S50), and a second solid electrolyte coating step (S60). Thus, a laminated structure may be formed. In this case, the all-solid-state battery manufacturing method may determine the number of the first electrode plate and the second electrode plate to be stacked according to the required specifications of the all-solid-state battery.

The all-solid-state battery manufacturing method includes a first electrode plate alignment step (S10) and a second electrode plate alignment step (S40) before the first electrode plate stack step (S20) and the second electrode plate stack step (S50), respectively. can be carried out. In addition, in the all-solid-state battery manufacturing method, after the first electrode plate stacking step (S20) and the second electrode plate stacking step (S50) according to the arrangement of the manufacturing equipment, the first electrode plate alignment step (S10) and the second electrode A plate alignment step (S40) may be performed. However, hereinafter, it is based on the fact that the first electrode plate alignment step (S10) and the second electrode plate alignment step (S40) are performed before the first electrode plate stack step (S20) and the second electrode plate stack step (S50). be explained by

In addition, in the following description, the first electrode plate will be described based on the positive electrode plate and the second electrode plate on the basis of the negative electrode plate. Meanwhile, the first electrode plate may be a negative electrode plate, and the second electrode plate may be a positive electrode plate. The first electrode plate may be formed by coating a cathode active material on both sides of a metal plate such as aluminum. In addition, the second electrode plate may be formed by coating both sides of a metal plate such as a copper plate with an anode active material.

The first electrode plate alignment step (S10) is a step of aligning the position of the first electrode plate. A plurality of the first electrode plates may be accommodated and supplied in a separate first magazine. In the first electrode plate aligning step (S10), after lifting the first electrode plate of the first magazine and transferring it to a predetermined first alignment position, the position and the front, rear, left, and right directions may be adjusted. The first electrode plate aligning step (S10) may be performed in a dry room atmosphere in which moisture control is possible. In addition, the first magazine is introduced through a separate loadlock chamber, and the loadlock chamber is formed in a closed structure so that it can be maintained in the same dry room atmosphere as the space in which alignment is performed.

The first electrode plate alignment step (S10) may be performed by a first alignment transfer module of the manufacturing apparatus. The first align transfer module may include an adsorption unit for adsorbing the first electrode plate, a transfer unit for transporting the adsorption unit forward and backward, left and right, and a rotation unit for rotating the transfer unit. Accordingly, the first align transfer module may adsorb the first electrode plate and transfer the first electrode plate to the first align position, and then align the position and the front, rear, left, and right directions. The first alignment transfer module may further include a sensing means for sensing the position and alignment level of the first electrode plate.

The first electrode plate stacking step (S20) is a step of transferring and stacking the first electrode plates to a stack position. The first electrode plate may be aligned and transferred to a stack position. The first electrode plate may be transferred to a stack position by the alignment transfer module. The first electrode plate may be seated on a separate stack support plate positioned at a stack position. Meanwhile, as mentioned above, the first electrode plate may be aligned and seated on the stack support plate after being transferred to the stack position.

The first solid electrolyte coating step (S30) is a step of forming a first solid electrolyte layer by coating the solid electrolyte slurry on the upper surface of the first electrode plate. The solid electrolyte slurry may be formed by mixing solid electrolyte powder and a dispersing solvent. In addition, the solid electrolyte slurry may include a binder binding the solid electrolyte powder. The solid electrolyte powder may be a sulfide-based solid electrolyte. The solid electrolyte powder may be a material having an azirodite composition (Li-P-S-Cl). The binder may be a non-polar resin. The binder may be a styrene-based resin, an olefin-based resin, or a rubber-based resin. Also, the dispersion solvent may preferably be a non-polar solvent. The non-polar solvent is pentane, cyclohexane, toluene, benzene, xylene, hexane, anisole, heptane, chloroform, diethylether or butyl butyrate (butyl buryrate).

The first solid electrolyte layer may be coated to a predetermined thickness on the upper surface of the first electrode plate. The first solid electrolyte layer may be coated to a thickness of 20.0 to 200 μm. In addition, the first solid electrolyte layer may be uniformly coated on the entire upper surface of the first electrode plate. In the first solid electrolyte coating step (S30), the solid electrolyte slurry may be coated using a doctor blade method or a slot die method.

The second electrode plate aligning step (S40) is a step of aligning the position of the second electrode plate. A plurality of the second electrode plates may be accommodated and supplied in a separate second magazine. In the step of aligning the second electrode plate (S40), after the second electrode plate of the second magazine is lifted and transferred to a predetermined second alignment position, the position and the front, rear, left, and right directions may be adjusted. The second electrode plate aligning step (S40) may be performed in a dry room atmosphere in which moisture control is possible. In addition, the second magazine is introduced through a separate loadlock chamber, and the loadlock chamber is also formed in a closed structure so that it can be maintained in the same dry room atmosphere as the space in which alignment is performed.

The second electrode plate alignment step (S40) may be performed by a second alignment transfer module of the manufacturing apparatus. The second align transfer module may include an adsorption unit for adsorbing the second electrode plate, a transfer unit for transporting the adsorption unit forward and backward, and a rotation unit for rotating the transfer unit. Accordingly, the second align transfer module may adsorb the second electrode plate and align the position and direction after transferring the second electrode plate to the second align position. The second alignment transfer module may further include a sensing means for sensing the position and alignment level of the first electrode plate.

The second electrode plate stacking step (S50) is a step of transferring and stacking the second electrode plate on top of the first electrode plate located in the stack position. The second electrode plate may be transferred to a stack position by a separate alignment transfer module in an aligned state. The top surface of the first electrode plate is coated with a solid electrolyte. The lower surface of the second electrode plate may be in contact with the upper surface of the solid electrolyte coated on the upper surface of the first electrode plate.

The second solid electrolyte coating step (S60) is a step of forming a second solid electrolyte layer by coating the solid electrolyte slurry on the upper surface of the second electrode plate. The solid electrolyte slurry may be the same material as the solid electrolyte slurry coated on the upper surface of the first electrode plate. Thus, the second solid electrolyte layer may be formed in the same way as the first solid electrolyte layer. Also, the second solid electrolyte coating step (S60) may be performed in the same manner as the first solid electrolyte coating step (S30). The solid electrolyte slurry may be coated to a predetermined thickness on the upper surface of the second electrode plate. In addition, the solid electrolyte slurry may be uniformly coated on the entire upper surface of the second electrode plate. In the second solid electrolyte coating step (S60), the solid electrolyte slurry may be coated using a doctor blade method or a slot die method.

Meanwhile, the all-solid-state battery manufacturing method includes a first electrode plate stacking step (S20), a solid electrolyte first coating step (S30), a second electrode plate stacking step (S50) after the solid electrolyte second coating step (S60), and A layered structure may be formed by repeatedly performing the second solid electrolyte coating step (S60). The laminated structure may be formed in a structure in which a first electrode plate, a solid electrolyte layer, a second electrode plate, and a solid electrolyte layer are repeatedly stacked from the bottom.

In addition, the first electrode plate and the second electrode plate are aligned before or after being transferred to the stack position. Accordingly, the laminated structure may be stacked such that side surfaces of the first electrode plate and the second electrode plate are aligned in the vertical direction.

Meanwhile, after the second solid electrolyte coating step (S60), the first electrode plate stacking step (S20), the first solid electrolyte coating step, the second electrode plate stacking step (S50), and the second solid electrolyte coating step (S60) is repeatedly performed, the laminated structure may be laminated with the required number of first electrode plates and second electrode plates. In addition, after the stacking of the stacked structure is completed, final alignment may be performed by moving the stacked structure forward, backward, left and right through a separate align unit.

In addition, the laminated structure may be fixed and moved by a separate fixing jig. In the laminated structure, the alignment of the first electrode plate and the second electrode plate may be misaligned during the coating process, transfer and packing process. The fixing jig supports side surfaces of the laminated structure to prevent misalignment of the first electrode plate and the second electrode plate of the laminated structure.

The step of packing the laminated structure (S70) is a step of inserting and packing the laminated structure into a compression film case. Also, in the step of packing the laminated structure (S70), the inside of the compressed film case may be evacuated. As described above, the laminated structure is formed in a structure in which the first electrode plate, the solid electrolyte layer, the second electrode plate, and the solid electrolyte layer are repeatedly laminated. The compression film case is made of the same material as a flexible film and may be formed in a bag shape with one side open. The compression film case accommodates the laminated structure therein, and one open side thereof may be sealed. In addition, as the compression film case is evacuated, air and gas therein may be discharged to the outside.

Meanwhile, the laminated structure may be inserted into the compression film case while being fixed to the fixing jig. At this time, since the stacked fixture may be displaced or misaligned during the insertion process, it may be fixed by a separate fixing frame.

The isostatic compression step (S80) is a step of isostatic compression of the laminated structure. Since the solid electrolyte slurry contains solid electrolyte powder, air bubbles may exist between the active material of the first electrode plate or the second electrode plate when coated, and the contact state may not be uniform. In the isostatic compression step (S80), an electrode assembly may be formed by heating the laminated structure at a high temperature.

In the isostatic compression step (S80), air bubbles present in the laminated structure may be removed by isostatic compression of the laminated structure. That is, while the laminated structure is compressed, gas or air existing between the first electrode plate and the second electrode plate and the solid electrolyte layer is discharged to the outside of the laminated structure. Also, the isostatic compression step (S80) may be performed in a predetermined temperature range. For example, the isostatic compression step (S80) may be performed in the range of 80 to 200 degrees. Gas or bubbles generated while the solid electrolyte layer is cured may be discharged to the outside of the laminated structure.

In the isostatic compression step (S80), after inserting a compression film case in which a pressure transmission medium and a laminated structure are inserted into an isostatic compression container having an open inlet on one side, the opened isostatic compression container may be sealed with an isostatic compression lid. . Oil may be used as the pressure transmission medium. The isobaric compression container may have a pressure transmission hole penetrating from the outside to the inside. The isobaric compression container transfers the pressure applied from the outside to the pressure transmission medium through the pressure transmission hole. The electrode plate assembly is compressed in six directions by pressure transmitted through a pressure transmission medium. Thus, air bubbles existing inside the electrode plate assembly may be discharged to the outside of the laminated structure. In addition, the isobaric compression step (S80) may be performed at once after inserting the plurality of laminated structures into the isobaric compression container.

The isostatic compression step (S80) may further include a cleaning process of cleaning the pressure transmission medium buried on the outside of the compression film case. In the isostatic compression step (S80), the compression film case into which the laminated structure is inserted is immersed in a pressure transmission medium. When the isostatic compression step (S80) is completed, the pressure transmission medium is buried on the surface of the compression film case. Therefore, in the cleaning process, the pressure transmission medium buried on the surface of the compression film case is removed. In this case, the heat pressing step (S90) may be performed while the laminated structure is inserted into the compression film case.

In addition, the isobaric compression step (S80) may further include a compression case removal process of removing the compression film case buried with the pressure transmission medium from the laminated structure and an exterior case insertion process of inserting the laminated structure into a new exterior film case. there is. The laminated structure may be separated from the compression film case during the compression case removal process. In addition, the laminated structure may be inserted into a new exterior case during the process of inserting the exterior case. In this case, the heat pressing step (S90) may be performed while the laminated structure is inserted into a new exterior film case.

The heat pressing step (S90) is a step of pressing by applying pressure to the upper and lower surfaces of the laminated structure at a high temperature. As the upper and lower surfaces of the laminated structure are compressed, air bubbles that may exist therein may be removed. Accordingly, physical contact between the first electrode plate, the solid electrolyte layer, and the second electrode plate may further increase. In addition, since the heat pressing step (S90) may be performed at a high temperature, the laminated structure may be heated to form an electrode assembly.

As described above, the laminated structure may be inserted into a compression film case or an external film case according to a specific process of the isostatic compression step (S80), and then a heat pressing step (S90) may be performed. That is, after the isostatic compression step (S80), the heat pressing step (S90) may be performed while the laminated structure is inserted into the compression film case. In addition, the laminated structure may be separated from the existing compression film case after the isostatic compression step (S80), inserted into a new external film case, and subjected to a heat pressing step (S90).

In the heat pressing step ( S90 ), the laminated structure may be pressed by placing the laminated structure between the upper plate and the lower plate and moving the upper or lower plate to the lower or upper side. In the heat pressing step (S90), the pressing pressure is adjusted so that the laminated structure is not damaged during the pressing process. Also, the heat pressing step (S90) may be performed inside the heating chamber. The heating chamber may be maintained at a predetermined temperature range. For example, the heating chamber may be maintained in the range of 80 to 120 degrees. In addition, the upper and lower plates may be heated to a predetermined temperature. In the heat pressing step (S90), the solid electrolyte layer may be in close contact with the first electrode plate and the second electrode plate positioned at the top and bottom.

Next, an all-solid-state battery manufacturing apparatus for the all-solid-state battery manufacturing method according to an embodiment of the present invention will be described.

2 describes an all-solid-state manufacturing apparatus according to an embodiment of the present invention.

Referring to FIG. 2 , an all-solid-state battery manufacturing apparatus according to an embodiment of the present invention includes a first align transfer module 100, a second align transfer module 200, a stacking module 300, and an electrolyte coating. It may include a module 400, a packing module 500, an isostatic compression module 600, a cleaning module 700, and a heating pressing module 800. In addition, the all-solid-state battery manufacturing apparatus may further include a first magazine module 50, a second magazine module 150, and a robot transfer module 550.

In the all-solid-state battery manufacturing apparatus, all modules may be installed in a dry room atmosphere of a low humidity atmosphere. In particular, in the all-solid-state battery manufacturing apparatus, the solid electrolyte coating module 400 and the packing module 500 in which the solid electrolyte is exposed to the atmosphere may be installed in a dry room atmosphere. In addition, in the all-solid-state battery manufacturing apparatus, the first align transfer module 100, the second align transfer module 200 and the stacking module ( 300) may also be installed in a dry room atmosphere. In addition, in the all-solid-state battery manufacturing apparatus, the first magazine module 50 and the second magazine module 150 may also be installed in a dry room atmosphere.

In the all-solid-state battery manufacturing apparatus, the first align transfer module 100 and the second align transfer module 200 may be symmetrically arranged around the stacking module 300 and the electrolyte coating module 400. . Accordingly, in the all-solid-state battery manufacturing apparatus, the first electrode plate and the second electrode plate may be more efficiently stacked and the solid electrolyte may be coated.

In addition, the all-solid-state battery manufacturing apparatus includes two sets of a first align transfer module 100, a second align transfer module 200, a stacking module 300, and an electrolyte coating module 400, It may be positioned symmetrically up and down with respect to the compression module 600 and the heat pressing module 800. Therefore, the all-solid-state battery manufacturing apparatus can more efficiently proceed with the manufacturing process. More specifically, in the process of manufacturing the all-solid-state battery, the isostatic compression process and the heat pressing process may be sequentially performed while the relatively time-consuming stacking of the laminated structure and the solid electrolyte coating process are performed in two sets at once.

The first magazine module 50 may stack and transport separately manufactured first electrode plates. The first magazine module 50 may include a first magazine for stacking and transporting first electrode plates formed in a plate shape, and a first load lock chamber accommodating the first magazine. The first magazine may have a general magazine structure in which plate-shaped members such as the first electrode plate are stacked and transported. For example, the magazine may include a bottom plate having a rectangular shape and support bars extending upward from 4 vertices or 4 corners of the bottom plate. In addition, the first load lock chamber may be formed as a load lock chamber accommodating the first magazine transported from the outside therein. The first magazine module 50 may be maintained in a dry room atmosphere. That is, the inside of the first load lock chamber may be maintained in a dry room atmosphere. In addition, when the inside of the first magazine is also sealed, it can be maintained in a dry room atmosphere.

The first align transfer module 100 may include an adsorption unit for adsorbing the first electrode plate, a transfer unit for transporting the adsorption unit forward and backward, left and right, and a rotation unit for rotating the transfer unit. In addition, the first alignment transfer module 100 may further include a sensing means for sensing the position and alignment level of the first electrode plate.

The first align transfer module 100 may adsorb and transfer the first electrode plate of the first magazine module 50 to the first align position, and then align the front, rear, left, and right directions. Also, the first align transfer module 100 may transfer the first electrode plate from the first align position to the stack position.

The second magazine module 150 may be formed identically to the first magazine module 50 . The second magazine module may stack and transport a separately manufactured second electrode plate. The second magazine module 150 may include a second magazine and a second load lock chamber. The second magazine may be formed identically to the first magazine. Also, the second load lock chamber may be formed identically to the first load lock chamber. Also, the second magazine module 150 may be maintained in a dry room atmosphere. That is, the inside of the second load lock chamber may be maintained in a dry room atmosphere. In addition, when the inside of the second magazine is also sealed, it can be maintained in a dry room atmosphere.

The second align transfer module 200 may be formed identically to the first align transfer module 100 . The second align transfer module 200 may include an adsorption unit for adsorbing the second electrode plate, a transfer unit for transporting the adsorption unit forward and backward, and a rotation unit for rotating the transfer unit. In addition, the second alignment transfer module 200 may further include a sensing means for sensing the position and alignment level of the second electrode plate.

The second align transfer module 200 may adsorb and transfer the second electrode plate of the second magazine module 150 to a second align position, and then align the front, rear, left, and right directions. Also, the second align transfer module 200 may transfer the second electrode plate from the second align position to the stack position.

The stacking module 300 may include a stack support plate. The stacking module 300 may further include a fixing jig that supports side surfaces of the stacked first electrode plate and the second electrode plate so that they are not moved.

The stacking module 300 may support the first electrode plate and the second electrode plate that are alternately transferred from the first align transfer module 100 and the second align transfer module 200 to the stack position. The stack location may be located on an upper surface of the stack support plate. In addition, when the coating module coats the solid electrolyte on the upper surfaces of the first electrode plate and the second electrode plate, the stacking module 300 may support the first electrode plate and the second electrode plate.

The stacking module 300 may support a laminated structure formed by alternately transported and stacked first electrode plates and second electrode plates and a solid electrolyte layer coated between the first electrode plate and the second electrode plate. there is.

The electrolyte coating module 400 forms a solid electrolyte layer by coating the solid electrolyte slurry on the upper surface of the first electrode plate or the second electrode plate transported to the stack position. More specifically, the electrolyte coating module 400 coats the solid electrolyte slurry to a predetermined thickness on the upper surfaces of the first electrode plate and the second electrode plate that are alternately transported to the stack position. The electrolyte coating module 400 may be formed by a general means used for coating slurry. For example, the electrolyte coating module 400 may include a doctor blade means or a slot die means.

The packing module 500 inserts the laminated structure into the compressed film case being transported at the stack position. In addition, the packing module 500 may evacuate the compressed film case and seal the compressed film case. The first electrode plate and the solid electrolyte layer, and the second electrode plate and the solid electrolyte layer may be alternately laminated.

The packing module 500 may include a means for providing a compression film case, a means for inserting a laminated structure into the compression film case, a means for evacuating the compression film case, and a means for sealing an open inlet of the compression film case. there is.

The robot transfer module 550 may be located between the packing module 500, the isostatic compression module 600, and the cleaning module 700. The robot transfer module 550 may transfer the compressed film case in which the laminated structure is accommodated from the packing module 500 to the isostatic compression module 600 . In addition, the robot transfer module 550 may transfer the compressed film case in which the laminated structure is accommodated from the isostatic compression module 600 to the cleaning module 700 . The robot transfer module 550 may be formed as a general transfer module having a robot arm. In addition, the robot transport module 550 may further include a collection jig capable of collecting the compressed film case.

The isobaric compression module 600 may include a compression film case having a laminated structure inserted therein, an isobaric compression container accommodating a compression transmission medium, and an isobaric compression press pressurizing the isobaric compression container. The isostatic compression press transmits an input to the pressure transmission medium of the isostatic compression container so that the laminated structure is isostatically compressed. In addition, the isobaric compression module 600 may further include a heating means for heating the pressure transmission medium and the laminated structure.

The isostatic compression module 600 may form an electrode assembly by isostatically compressing the laminated structure accommodated inside the compression film case using a compression transmission medium. The isostatic compression module 600 may remove air bubbles present in the laminated structure by isostatically compressing the laminated structure. The isostatic compression module 600 may heat the laminated structure in the isostatic compression process.

The cleaning module 700 cleans the pressure transmission medium buried on the surface of the compression film case. The cleaning module 700 may include a spraying means for spraying a cleaning agent. The pressure transmission medium remains on the surface of the compression film case after the compression film case and the laminated structure are isostatically compressed in the isostatic compression module. The cleaning module 700 may clean the pressure transmission medium from the surface of the isostatically compressed compression film case. Accordingly, the laminated structure may be transferred to the heating pressing module 800 while being inserted into the compression film case.

Meanwhile, the all-solid-state battery manufacturing apparatus may include a separate insertion module 700 instead of the cleaning module 700 . The separation and insertion module may remove the compressed film case from the laminated structure after the laminated structure is isostatically compressed in the isostatic compression module 600 . Also, the separation and insertion module may insert the laminated structure into a new exterior film case. Accordingly, the laminated structure may be transferred to the heating pressing module 800 after being inserted into a new exterior film case.

The heat pressing module 800 may press the upper and lower surfaces of the laminated structure. In addition, the heating pressing module 800 may heat the laminated structure during the pressing process. The heating pressing module 800 may include a pressure press. In addition, the heating pressing module 800 may further include a heating unit. The pressure press includes an upper plate and a lower plate spaced apart vertically and having a laminated structure therebetween, a pressure cylinder for pressing the upper plate or the lower plate by moving the upper plate or the lower plate up and down, and a hydraulic pump for applying pressure to the pressure cylinder. can do. The heating means may heat the upper plate or the lower plate.

The embodiments disclosed in this specification are only presented by selecting the most preferred embodiments to help those skilled in the art to understand among various possible examples, and the technical spirit of the present invention is not necessarily limited or limited only by these embodiments, Various changes, additions, and changes are possible within a range that does not deviate from the technical spirit of the present invention. Of course, other equivalent embodiments can be implemented.

50: first magazine module 100: first alignment transfer module
150: second magazine module 200: second alignment transfer module
300: stacking module 400: electrolyte coating module
500: packing module 600: isobaric compression module
700: cleaning module 800: heating pressing module

Claims (18)

A first electrode plate stacking step of transferring and stacking the first electrode plates to a stack position;
A first solid electrolyte coating step of forming a first solid electrolyte layer by coating a solid electrolyte slurry on the upper surface of the first electrode plate;
A second electrode plate stacking step of transferring and stacking the second electrode plate above the first electrode plate located at the stack position;
A second solid electrolyte coating step of forming a second solid electrolyte layer for coating the solid electrolyte slurry on the upper surface of the second electrode plate; and
A laminated structure packing step of inserting and packing the laminated structure in which the first electrode plate, the first solid electrolyte layer, the second electrode plate and the second solid electrolyte layer are repeatedly stacked into a compression film case. Solid-state battery manufacturing method. According to claim 1,
The all-solid-state battery manufacturing method
An isobaric compression step of isostatically compressing the compression film case into which the laminated structure is inserted using a pressure transmission medium, and
The all-solid-state battery manufacturing method further comprising a heat pressing step of pressing by applying pressure to the upper and lower surfaces of the laminated structure. According to claim 1,
The step including the first electrode plate stacking step, the solid electrolyte first coating step, the second electrode plate stacking step, the solid electrolyte second coating step, and the layered structure packing step are performed in a dry room atmosphere. A method for manufacturing an all-solid-state battery, characterized in that. According to claim 1,
Before the step of stacking the first electrode plate
A first electrode plate alignment step of transferring and aligning the first electrode plate to a first alignment position;
Before the step of stacking the second electrode plate
A second electrode plate alignment step of transferring and aligning the second electrode plate to a second alignment position;
The method of manufacturing an all-solid-state battery, characterized in that the first electrode plate aligning step and the second aligning step are performed in a dry room atmosphere. According to claim 4,
In the step of aligning the first electrode plate, the first electrode plate accommodated in the first magazine is lifted and transferred to the first align position;
In the step of aligning the second electrode plate, the second electrode plate accommodated in the second magazine is lifted and transferred to the second align position;
The all-solid-state battery manufacturing method, characterized in that the first magazine and the second magazine are introduced through a separate load lock chamber maintained in a dry room atmosphere. According to claim 1,
The solid electrolyte first coating step and the solid electrolyte second coating step are all-solid-state battery manufacturing method, characterized in that for coating the solid electrolyte slurry using a doctor blade method or a slot die method. According to claim 1,
In the solid electrolyte first coating step and the solid electrolyte second coating step, the first solid electrolyte layer and the second solid electrolyte layer are coated to a thickness of 20.0 to 200 μm, respectively. According to claim 1,
The all-solid-state battery manufacturing method, characterized in that in the packing of the laminated structure, the compressed film case into which the laminated structure is inserted is evacuated and then sealed. According to claim 2,
The all-solid-state battery manufacturing method, characterized in that the isobaric compression step proceeds in the range of 80 ~ 200 ℃. According to claim 2,
The all-solid-state battery manufacturing method, characterized in that the heat pressing step proceeds in a heating chamber in the range of 80 ~ 120 ℃. According to claim 2,
The isobaric compression step further includes cleaning the pressure transmission medium buried on the outside of the compression film case,
The heat pressing step is an all-solid-state battery manufacturing method, characterized in that for pressing the laminated structure through the compression film case . According to claim 2,
The isobaric compression step further includes removing the compression film case buried with the pressure transmission medium from the laminated structure and inserting the laminated structure into a new exterior film case,
The heat pressing step is an all-solid-state battery manufacturing method, characterized in that for pressing the laminated structure through the exterior film case. A first align transfer module that adsorbs the first electrode plate and transfers it to a first align position, and then aligns the front, rear, left, and right directions;
A second align module that adsorbs the second electrode plate and transfers it to a second align position, and then aligns the front, rear, left, and right directions;
A stacking module including a stack plate and supporting the first electrode plate and the second electrode plate that are alternately transferred to a stack position from the first align transfer module and the second align transfer module;
An electrolyte coating module for forming a solid electrolyte layer by coating a solid electrolyte slurry on the upper surface of the first electrode plate or the second electrode plate transported to the stack position;
A packing module for inserting a laminated structure formed by alternately stacking the first electrode plate, the solid electrolyte layer, the second electrode plate, and the solid electrolyte layer into a compression film case;
An isobaric compression module for isostatically compressing the laminated structure accommodated inside the compression film case using a pressure transmission medium, and
All-solid-state battery manufacturing apparatus comprising a heating pressing module for pressing the upper and lower surfaces of the isostatically compressed laminated structure. According to claim 13,
The all-solid-state battery manufacturing device
A first magazine module for stacking and supplying the first electrode plate, and
Further comprising a second magazine module for stacking and supplying the second electrode plate,
The all-solid-state battery manufacturing apparatus, characterized in that installed in a dry room atmosphere. According to claim 13,
The all-solid-state battery manufacturing device
All-solid-state battery manufacturing apparatus further comprising a cleaning module for cleaning the pressure transmission medium buried on the surface of the compression film case while being isostatically compressed in the isostatic compression module. According to claim 13,
The all-solid-state battery manufacturing device
After isostatic compression in the isostatic compression module, the all-solid-state battery manufacturing apparatus further comprising a separation and insertion module for separating the compressed film case from the laminated structure and inserting the laminated structure into a new exterior film case. According to claim 13,
The all-solid-state battery manufacturing device
All-solid-state battery manufacturing apparatus characterized in that it is composed of one integrated facility further including a robot transport module located between the packing module, the isobaric compression module and the cleaning module to transport the compressed film case into which the laminated structure is inserted . According to claim 13,
The all-solid-state battery manufacturing device
The first align transfer module and the second align transfer module are disposed symmetrically left and right around the stacking module,
The first align transfer module, the second align transfer module, and the stacking module are provided in two sets, and are positioned symmetrically up and down with respect to the isobaric compression module and the heat pressing module. .

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