KR20200059560A - Rolling module for secondary battery cell - Google Patents

Abstract

The present invention relates to a secondary battery cell rolling module, and more specifically, to a secondary battery cell rolling module, performing a rolling process on a secondary battery cell which has completed an activation process. A secondary battery cell rolling module (200) is used for a secondary battery cell (40) including an electrode assembly (10) in which a first electrode sheet (12) and a second electrode sheet (14) are alternately stacked and a separator (16) is located between the first electrode sheet (13) and the second electrode sheet (14) and a pouch (20) which seals the electrode assembly (10), and having a plate-shaped structure. The secondary battery cell rolling module (200) further includes a pressurization roller unit (210) for receiving a secondary battery cell (40) which has completed a charge and discharge process and performing a rolling process of rolling while pressurizing at least one plate of the secondary battery cell (40) to uniformly spread a gel electrolyte therein.

Description

Rolling module for secondary battery cell}

The present invention relates to a secondary battery cell rolling module, and more particularly, to a secondary battery cell rolling module that performs a rolling process for a secondary battery cell that has completed an activation process.

In general, a chemical cell is a battery composed of a pair of electrodes and an electrolyte of a positive electrode and a negative electrode, and the amount of energy that can be stored varies depending on the materials constituting the electrode and the electrolyte.

These chemical cells are divided into primary batteries that are used only for one-time discharge because of a very slow charging reaction, and secondary batteries that can be reused through repeated charging and discharging.

Secondary batteries are applied to various technical fields throughout the industry, and are used as energy sources for advanced electronic devices such as wireless mobile devices, as well as air pollution from existing gasoline and diesel internal combustion engines using fossil fuels. It is also attracting attention as an energy source for hybrid electric vehicles, which is being proposed as a solution.

The secondary battery is manufactured in various ways depending on the shape of the case housing the electrode assembly, and there are cylindrical, prismatic, and pouch shapes as typical shapes.

Typically, a cylindrical secondary battery uses a cylindrical aluminum can, a prismatic secondary battery uses a square aluminum can, and the pouch-type secondary battery is sealed with a pouch in the form of a thin aluminum laminate film made of aluminum or the like. As it is relatively lightweight and has excellent stability, it has been widely used in recent years.

As an example, looking at the configuration of the pouch-type secondary battery cell, a stack consisting of an electrode / separator assembly made of a separator interposed between a negative electrode and a positive electrode and a stack containing the stack inside is aluminum- It consists of a pouch made of a laminate film, and one end connected to the stack and the other end exposed to the outside of the pouch to form a plate-like lead tab for inducing current to the outside.

The secondary battery cell is generally completed by injecting an electrolyte into a pouch in which an electrode / separator assembly composed of a negative electrode, a positive electrode, and a separator interposed therebetween is accommodated and then sealed.

As a post-process for the completed secondary battery cell, it is inspected after the activation process (charge / discharge process) for the secondary battery cell injected with electrolyte and the degas process to remove gas generated inside the secondary battery cell by the charge / discharge process After the process, it can finally function as a secondary battery.

However, after the activation process for the secondary battery cell, the electrolyte impregnated inside the secondary battery cell exists in a gelled state. Whether the gelled electrolyte is evenly distributed inside the secondary battery cell may affect the performance of the secondary battery cell.

The object of the present invention, recognizing the above effects, includes a rolling module that performs a rolling process by pressing and rolling a plate surface of a plate-shaped secondary battery cell between a charge-discharge process and a degassing process for a secondary battery cell using a roller. By providing a secondary battery cell rolling module that can improve the performance of the secondary battery cell by spreading the gelled electrolyte evenly.

The present invention was created in order to achieve the object of the present invention as described above, the first electrode sheet 12 and the second electrode sheet 14 are alternately stacked with each other and the first electrode sheet 13 and the second Secondary to the secondary battery cell 40 having a plate-shaped structure including an electrode assembly 10 in which a separator 16 is positioned between the electrode sheets 14 and a pouch 20 for sealing the electrode assembly 10 The battery cell rolling module 200 is disclosed.

The rolling module 200 receives the secondary battery cell 40, which has been charged and discharged, and performs a rolling process of pressing and rolling at least one plate surface of the secondary battery cell 40 so that the gelled electrolyte inside is evenly spread. It may include a pressing roller portion 210.

The secondary battery cell rolling module 200 may perform the rolling process between the charging and discharging process and a degassing process for removing gas inside the pouch 20 of the secondary battery cell 40.

The secondary battery cell rolling module 200 includes a cell fixing unit 220 fixing a side edge of the secondary battery cell 40 in an upright state, and a secondary battery cell 40 fixed by the cell fixing unit 220. A support plate portion 230 supporting one side (hereinafter, the first plate surface) of the pair of plate surfaces may be further included.

The cell fixing part 220 includes at least one gripping part 222, 224 for gripping the side edge of the secondary battery cell 40 in the upright state, and a secondary battery cell 40 for the gripping parts 222, 224. ) May include a cell sensing unit 226 installed in the gripping units 222 and 224 to detect whether or not it is located.

The support plate portion 230 may include a support plate 232 for interviewing the first plate surface, and a support plate pressing portion for pressing the support plate 232 toward the first plate surface.

The pressing roller unit 210, a roller portion 212 for rolling and pressing the opposite surface (hereinafter, a second plate surface) of the first plate surface, and a roller up and down driving portion driving the vertical movement of the roller portion 212 214 and a roller forward and backward driving unit 216 for driving forward and backward movement toward the second plate surface of the roller unit 212.

The roller part 212 is formed of a cylindrical shape and a cylindrical roller 212a installed to be parallel to the horizontal plane and a rotating shaft member 212b parallel to the longitudinal direction and penetrating through the center of the cylindrical roller 212a. ).

The roller up and down driving unit 214 may move the cylindrical roller 212a up and down so as to allow the cylindrical roller 212a to roll around the rotating shaft member 212b with respect to the second plate surface.

The secondary battery cell rolling module according to the present invention comprises a rolling module that performs a rolling process by rolling a plate surface of a plate-shaped secondary battery cell by using a roller between a charging and discharging process and a degassing process for the secondary battery cell, thereby gelling There is an advantage that can improve the performance of the secondary battery cell by spreading the electrolyte evenly.

1 is a schematic diagram illustrating a secondary battery cell degas system according to an embodiment of the present invention.
FIG. 2 is a plan view showing a part of the configuration of the secondary battery cell degas system of FIG. 1.
3 is a flowchart illustrating a degassing process performed in a secondary battery cell degas system according to the present invention.
4 is a schematic diagram showing a part of the configuration of the secondary battery cell degas system of FIG. 1.
5A is a plan view showing a pressurized roller module of the secondary battery cell degas system of FIG. 1.
5B is a cross-sectional view taken along line A-A 'in FIG. 5A.
6 is a front view showing a part of the configuration of the pressing roller module of FIGS. 5A to 5B.
7 is a plan view showing a part of the configuration of the pressing roller module of FIGS. 5A to 5B.
8 is a plan view showing a secondary battery cell in which a degassing process is performed in the secondary battery cell degas system according to the present invention.
9 is a cross-sectional view taken along line B-B 'in FIG. 8.

Hereinafter, a secondary battery cell degas system according to the present invention will be described with reference to the accompanying drawings.

The secondary battery cell degassing system according to the present invention performs a degassing process for discharging and removing the gas generated inside the secondary battery cell 40 after the activation process, as shown in FIGS. 1 to 9. System.

Here, the secondary battery cell 40 in which the degassing process is performed by the secondary battery cell degassing system 100 according to the present invention, as shown in FIGS. 8 and 9, the first electrode sheet 12 and the second An electrode / separation membrane assembly 10 and an electrode / separation membrane assembly in which the electrode sheets 14 are alternately stacked alternately and the separation membrane 16 is positioned between the first electrode sheet 12 and the second electrode sheet 14. A pouch 20 for sealing 10 and a lead tab 30 connected to the electrode / separation membrane assembly 10 and projecting to the outside of the pouch 20 are included. Here, FIG. 8 is a plan view of the secondary battery cell 40 having a square plate shape viewed in a normal direction perpendicular to the plate surface.

The electrode / separation membrane assembly 10 is impregnated with an electrolyte solution injected before the degassing process.

The first electrode sheet 12 and the second electrode sheet 14 are stacked alternately, and are separated by a separator 16 therebetween, forming positive and negative electrodes of the secondary battery cell 40, respectively. As a member, it may be formed of a metal sheet according to electrode characteristics.

In the first electrode sheet 12 and the second electrode sheet 14, electrode tabs (not shown) extend from each electrode sheet.

The separator 16 is a member interposed between the first electrode sheet 12 and the second electrode sheet 14, and preferably has a material having high wettability to the electrolyte and high chemical resistance.

The separator 16 may have various materials depending on the material of the first electrode sheet 12 and the second electrode sheet 14 constituting the secondary battery cell 40 and the physical properties of the electrolyte.

The pouch 20 is a member for sealing the electrode / separation membrane assembly 10 impregnated into the electrolyte, and may have various materials according to the material of the first electrode sheet 12 and the second electrode sheet 14, the physical properties of the electrolyte, and the like. Can be.

For example, the pouch 20 may be formed by laminating a nylon layer on one surface of the aluminum layer and a P.P layer on the other surface.

The lead tab 30 is made of a pair of anodes and cathodes, one end of which is connected to the electrode / separation assembly 10 and the other end protrudes out of the pouch 20.

The lead tab 30 may be electrically connected to a plurality of electrode tabs extending from each electrode sheet 12 or 14 by welding.

8 to 9, a pair of lead tabs 30, respectively, shows a case where each of the secondary battery cells 40 is welded to opposite sides, but it is also possible that all of them are formed on one side.

In addition, a lead film 31 may be attached to at least a portion of the upper and lower surfaces of the lead tab 30 to increase the sealing degree with the pouch 20 and at the same time secure the electrical insulation state.

The degas system 100 according to the present invention, as shown in Figures 1 to 7, for the degassing process for removing the gas generated inside the pouch 20 of the secondary battery cell 40 after the activation process Degas module 110 and; It is installed on one side of the degas module 110, the loading tray 52 is loaded secondary battery cell 40 before the degassing process, and the degassing process completed in the degas module 110 secondary battery cell 40 is A tray transport unit 120 forming a movement path of the unloading tray 54 loaded; It may include a cell transfer unit 130 for transferring the secondary battery cell 40 between the loading tray 52, the unloading tray 54 and the degas module 110.

The degas module 100 is a configuration for a degassing process for the secondary battery cell 40, and various configurations are possible.

For example, the degas module 100 may include a plurality of degas chambers 112 performing a degassing process on the secondary battery cell 40.

In one embodiment, the degas module 100, as shown in Figure 2, a plurality of degas chamber 112 (three digas chamber 112 in the case of Figure 2) is to be installed in a group Can be. The arrangement of the degas chambers 112 in each degas module 100 may be variously configured according to the design and installation space.

The degas chamber 112 is configured to perform a degassing process by receiving at least one secondary battery cell 40, and various configurations are possible.

On the other hand, the secondary battery cell 40 before the degassing process is performed in the degas chamber 112, as shown in Figure 8, the gas collecting space (M) in which the gas inside the secondary battery cell 40 gathers is formed To be possible, one side pouch 20 of the secondary battery cell 40 may include a gas collecting portion 42 formed to extend longer than the other side surfaces.

At this time, the secondary battery cell 40 before the degassing process is performed includes a gas collecting space M so that gas can be collected in the gas collecting space M through an activation process, and the degas chamber is sealed with an edge sealed. (112).

In one embodiment, the degas chamber 112, the chamber body (not shown) that forms the interior space of the vacuum atmosphere and supports the secondary battery cell 40 in an upright state, and is installed in the chamber body and the secondary battery cell (40) a through-hole forming unit for forming at least one through-hole 23 in the pouch 20 of the secondary battery cell 40 so that the gas collected in the internal gas collecting space M is discharged to the outside, and the through-hole On the basis of (23), the electrode / separation membrane assembly 10 may include a sealing unit that seals the secondary battery cell 40 from the inner side.

The chamber main body supports one or more secondary battery cells 40 in an upright state, and a variety of configurations are possible in a configuration in which the internal space is formed as a vacuum atmosphere.

In the chamber body, the secondary battery cell 40 is supported in an upright state such that the above-described gas collecting space M is located on the upper side.

The chamber body may include a vacuum pump (not shown) that allows the internal space to be switched from a vacuum state to an atmospheric pressure state, and vice versa.

In addition, the chamber body may be additionally installed with a pressurizing portion that presses the side surface of the secondary battery cell 40 supported on the chamber body so that gas exhaust through the through-hole 23 described later is smoothly performed.

The through-hole forming unit is installed in the chamber body, and at least one or more penetrating through the pouch 20 of the secondary battery cell 40 so that the gas collected in the gas collecting space M inside the secondary battery cell 40 can be discharged to the outside. Various configurations are possible as a configuration forming the sphere 23.

The through-hole 23, as shown in Figure 8, a configuration that is formed in the gas collecting portion 42 of the pouch 20, various configurations are possible. Gas collected in the gas collecting space M through the through hole 23 may be discharged to the outside of the secondary battery cell 40.

As an example, the through-hole forming unit may include a penetrating member penetrating the front and rear surfaces of the pouch 20 and a driving part for driving the penetrating member in the front-rear direction.

Of course, the through-hole forming unit may include a plurality of through-members installed in a line so that a plurality of through-holes 23 are formed as shown in FIG. 8.

The sealing unit is installed in the chamber body and is configured to seal the edge of the secondary battery cell 40 by sealing the edge of the secondary battery cell 40 in which gas is discharged, and the secondary battery cell in the state where the chamber body is in a vacuum atmosphere ( If the edge pouch 20 portion of the 40) can be sealed, various configurations are possible.

At this time, the sealing portion is installed to seal the pouch 20 of the secondary battery cell 40 from the inside close to the electrode / separation membrane assembly 10 based on the through hole 23.

That is, since the sealing part seals the pouch 20 between the through hole 23 and the electrode / separation membrane assembly 10, the pouch 20 of the secondary battery cell 40 can be completely sealed.

Referring to FIG. 8, a suture line 25 may be formed under the through-hole 23 by the suture, and the secondary battery cell 40 may be sealed.

Meanwhile, the degas chamber 112 may further include a weighing unit (not shown) that measures the weight of the secondary battery cell 40 to determine whether it is a good product.

The weighing unit measures the weight of the secondary battery cell 40 and determines that the amount of the electrolyte impregnated in the secondary battery cell 40 is insufficient when the measured weight is lighter than a preset weight, and thus judges that it is not a good product Various configurations are possible.

As the vacuum atmosphere is formed in the degas chamber 112, the electrolyte of the secondary battery cell 40 may be evaporated, resulting in a problem that the internal electrolyte is less than the standard. By installing the measuring unit, there is an advantage in that defective secondary battery cells 40 that may occur during the degassing process can be preliminarily selected and excluded from subsequent processes.

The degassing process in the degas module 110 including the above-described configuration, referring to FIG. 3, the step (S301) of loading the secondary battery cell 40 into the degas chamber 112 (S301), and the loaded secondary battery cell Pouch piercing step (S302) to form a through hole (23) in the gas collecting portion of (42), vacuum forming step (S303) to form a vacuum atmosphere inside the degas chamber (112), and through the gas discharge after completion The pre-sealing step (S304) of sealing the secondary battery cell 40 except the sphere 23, and the step of unloading the secondary battery cell 40 in the degas chamber 112 (S305), and the unloaded It may include a weighing step (S306) to measure the weight of the secondary battery cell 40 to check the quality.

The weighing step (S306), of course, may be performed through a weighing unit inside the degas chamber 112 before the secondary battery cell 40 unloading step (S305).

The tray transfer unit 120 is installed on one side of the degas module 110, the secondary battery cell 40 before the degassing process is loaded loading tray 52 and the degassing module 110 degassing process completed secondary battery Various configurations are possible as a configuration for forming a movement path of the unloading tray 54 on which the cell 40 is loaded.

For example, the tray transfer unit 120 may include a rail forming a transfer path of the loading tray 52 and the unloading tray 54.

The tray transport unit 120 is preferably configured to move along the same line at a position where the loading tray 52 and the unloading tray 54 do not interfere with each other.

The loading tray 52 is a tray loaded with at least one secondary battery cell 40 to be degassed, and various configurations are possible.

The loading tray 52 may be movably installed between the cell loading position P1 and the cell delivery position P2 preset on the tray transport unit 120.

At this time, the loading tray 52 receives the secondary battery cell 40 to be degassed from the outside at the cell loading position (P1), moves to the cell delivery position (P2), and is loaded at the cell delivery position (P2). The secondary battery cell 40 may be transferred to the degas module 110.

The unloading tray 54 is a tray on which at least one secondary battery cell 40 subjected to degassing is loaded, and various configurations are possible.

The unloading tray 54 may be movably installed between the cell transfer position P2 and the cell unloading position P3 set in advance on the tray transfer unit 120.

At this time, the unloading tray 54 receives the secondary battery cell 40 that is degassed (completed) from the degas module 110 at the cell transfer position P2 and moves to the cell unloading position P3, The secondary battery cell 40 loaded at the cell unloading position P3 may be discharged to the outside.

The secondary battery cell 40 in the loading tray 52 and the unloading tray 54 may be loaded in an upright state.

The cell transfer unit 130 is configured to transfer the secondary battery cell 40 between the loading tray 52, the unloading tray 54, and the degas module 110, and various configurations are possible.

Specifically, the cell transfer unit 130 transfers the secondary battery cell 40 loaded in the loading tray 52 moved to the cell transfer position P2 to the degas module 110, and the degas module ( It may be installed to transfer the secondary battery cell 40 in 110) to the unloading tray 54 moved to the cell transfer position P2.

As an example, the cell transfer unit 130, as shown in Figure 2, picks up the secondary battery cell 40 from the loading tray 52, and moves to a position for bringing it into the degas chamber 112 1 may include a transfer unit 132 and a second transfer unit 134 to pick up the secondary battery cell 40 taken out from the degas chamber 112 and move to a position for loading into the unloading tray 54. have.

Each of the first transfer unit 132 and the second transfer unit 134 may be configured to pick up and transfer at least one or more preferably multiple secondary battery cells 40, so that the movement paths do not interfere with each other. Can be set.

Meanwhile, in the secondary battery cell degassing system 100 according to the present invention, as shown in FIGS. 1 and 2, a plurality of degas modules 110 may be installed along the movement path of the tray transport unit 120. have.

The plurality of degas modules 110 may be sequentially installed along the movement path of the tray transport unit 120.

That is, in the present invention, since the degas module 100 is installed on one side of the tray transport unit 120, it is easy to increase the number of degas modules 110, and thus the system is excellent in expandability and the digas system 100 There is an advantage that productivity can be greatly improved.

In this case, the loading tray 52, the unloading tray 54 and the cell transfer unit 130, as shown in FIG. 2, is preferably installed corresponding to each of the plurality of degas modules 110 .

Specifically, referring to FIG. 2, the first degas module 110a is provided with a first loading tray 52a, a first unloading tray 52b, and a first cell transfer unit 130a correspondingly installed. A second loading tray 54a, a second unloading tray 54b, and a second cell transfer unit 130b may be installed in correspondence to the 2 degas module 110b.

That is, the loading tray 52, the unloading tray 54 and the cell transfer unit 130 may be installed in a number corresponding to the number of the plurality of degas modules 110, as shown in FIG. .

On the other hand, when the weighing unit is not installed in the above-described degas chamber 112, the degas system 100 according to the present invention, as shown in Figure 2, the secondary battery cell 40 is completed degassing process Before being transferred to the unloading tray 54 by the cell transfer unit 130, the weight measuring unit 140 may be additionally included to measure the weight of the secondary battery cell 40 to determine whether it is a good product.

The weight measuring unit 140 is preferably installed on the movement path of the second transfer unit 134 for transferring the secondary battery cell 40 to the cell transfer unit 130, especially the unloading tray 54.

The weighing unit 140 measures the weight of the secondary battery cell 40 and determines that the amount of electrolyte impregnated in the secondary battery cell 40 is insufficient when the measured weight is lighter than the preset weight. Various configurations are possible with configurations that are judged not to be.

At this time, the secondary battery cell degas system 100, the first discharge unit 810 to classify and discharge the secondary battery cell 40 determined to be defective according to the weight measured by the weight measuring unit or the weight measuring unit It may further include.

This prevents the subsequent process from proceeding to the secondary battery cell 40 judged to be defective, thereby improving the productivity of the entire device.

In addition, the secondary battery cell degassing system 100 according to the present invention, as shown in FIG. 1, receives the secondary battery cell 40 that has been degassed from the unloading tray 54 and receives the secondary battery cell 40 Sealing module 300 for final sealing may be further included.

The sealing module 300 is finally configured to seal the edge of the secondary battery cell 40 in accordance with a preset specification, and various configurations are possible.

In addition, the secondary battery cell degas system 100 according to the present invention receives the sealed secondary battery cell 40 from the sealing module 300 and cuts the edge of the secondary battery cell 40 according to a preset standard. The cutting module 400 may be further included.

The cutting module 400 is a configuration for cutting the wing portion of the plate edge pouch 20 of the secondary battery cell 40 to a length conforming to a standard, and various configurations are possible.

In addition, the secondary battery cell degassing system 100 according to the present invention receives the secondary battery cell 40 cut from the cutting module 400 and taps the edge of the secondary battery cell 40. ).

In the case of the cut secondary battery cell 40, the cross section of the pouch 20 may be exposed on the edge portion of the plate surface and insulation may be required, and the edge of the secondary battery cell 40 is made of insulating material. Various configurations are possible with a tape-tapping configuration.

In addition, the secondary battery cell degas system 100 according to the present invention receives the taped secondary battery cell 40 from the taping module 500 and folds the edge of the secondary battery cell 40 at a preset angle. The folding module 600 may be further included.

The folding module 600 is configured to fold the edge pouch 20 portion of the secondary battery cell 40 toward the electrode / separator assembly 10 at least once, and various configurations are possible, for example, the edge pouch (20) The portion may be configured to fold sequentially at an angle of 90 °, 180 °, 360 ° toward the electrode / separator assembly 10.

In addition, the secondary battery cell degas system 100 receives the sealed secondary battery cell 40 from the sealing module 300 and inspects the inspection module 700 for inspecting the quality of the secondary battery cell 40. It may further include.

The inspection process performed in the inspection module 700 is preferably performed as the last process before the secondary battery cell 40 is discharged to the outside, as shown in FIG. 1.

The inspection module 700, whether the secondary battery cell 40 that has undergone various processes (rolling process, degassing, sealing, cutting, taping, folding, etc.) to be included in the degassing process finally satisfies a preset criterion. Various configurations are possible as a configuration to check whether or not.

For example, the inspection module 700, as shown in Figure 4, the insulation inspection unit 710 for performing an insulation inspection for the secondary battery cell 40, and the thickness inspection for the secondary battery cell 40. It may include a thickness inspection unit 720 to perform, and an IR / OCV inspection unit 730 for performing IR / OCV inspection on the secondary battery cell 40.

On the other hand, in the inspection module 700, the secondary battery cell 40 may further include a turntable that supports and rotates in a state in which the normal line perpendicular to the plate surface is parallel to the vertical direction.

In this case, the insulation inspection unit 710, the thickness inspection unit 720, and the IR / OCV inspection unit 730 may be installed along the rotational transport path of the secondary battery cell 40 delivered to the rotating turntable.

The turntable configuration may be applied to the above-described sealing module 300, cutting module 400, taping module 500, and folding module 600.

In addition, the secondary battery cell degas system 100 according to the present invention, the second discharge unit 820 to classify and discharge the secondary battery cell 40 determined as defective according to the inspection result in the inspection module 700 It may further include.

On the other hand, the internal electrolyte of the secondary battery cell 40 that has completed the activation process (charge / discharge process) is present in a gelled state, and the secondary battery cell (such that the gelated electrolyte is evenly spread inside the secondary battery cell 40) It can be an important factor in improving the performance of 40).

Thus, the secondary battery cell degas system 100 according to the present invention, at least one of the secondary battery cells 40 received from the outside, so that the gelled electrolyte inside the secondary battery cell 40 before the degassing process is evenly spread. A secondary battery cell rolling module 200 that is rolled while pressing the plate surface may be additionally included.

The secondary battery cell rolling module 200 is configured to perform a rolling process between a charging / discharging process and a degassing process for removing gas inside the pouch 20 of the secondary battery cell 40, and the secondary battery cell 40 Various configurations are possible if it includes a roller that presses and rolls at least one plate surface.

As an example, the rolling module 200, as shown in Figures 1 and 5a to 7, the secondary battery cell to receive the secondary battery cell 40 is completed charging and discharging process is evenly spread inside the gelled electrolyte It may include a pressing roller unit 210 for performing a rolling process rolling while pressing at least one plate surface of the cell 40.

At this time, the secondary battery cell rolling module 200, the cell fixing unit 220 for fixing the side edges of the secondary battery cell 40 in an upright state, and the secondary battery cell 40 fixed by the cell fixing unit 220 A support plate portion 230 supporting one side (hereinafter, the first plate surface) of the pair of plate surfaces may be additionally included.

First, the pressurizing roller part 210 includes a roller part 212 and a roller part 212 that rolls and presses a plate surface (opposite surface of the first plate surface, hereinafter, a second plate surface) of the secondary battery cell 40. It may include a roller up and down driving unit 214 for driving the vertical movement, and a roller forward and backward driving unit 216 for driving forward and backward movement toward the second plate surface of the secondary battery cell 40 of the roller unit 212.

The roller part 212 is formed of a cylindrical shape and a cylindrical roller 212a installed to be parallel to the horizontal plane and a rotating shaft member 212b parallel to the longitudinal direction and penetrating through the center of the cylindrical roller 212a. It may include.

The roller upper and lower driving portion 214 is configured to move the cylindrical roller 212a up and down so that the cylindrical roller 212a can be rolled around the rotating shaft member 212b with respect to the second plate surface of the secondary battery cell 40. Various configurations are possible, and various driving methods such as pneumatic actuators can be applied.

When the secondary battery cell 40 is introduced or discharged into the rolling module 200, the roller portion 212 is reversed in the direction of moving away from the second plate surface of the secondary battery cell 40. , In the rolling process for the secondary battery cell 40, the roller portion 212 is advanced toward the second plate surface of the secondary battery cell 40 and is configured to drive the forward and backward movement of the roller portion 212 to pressurize the plate surface. Various configurations are possible, and various driving methods such as pneumatic actuators can be applied.

The cell fixing unit 220, as shown in Figure 6, at least one gripping portion (222, 224) and the gripping portion (222, 224) for gripping the side edge of the secondary battery cell (40) in the upright state ) May include a cell detection unit 226 installed in the gripping units 222 and 224 to detect whether the secondary battery cell 40 is located.

The gripping parts 222 and 224 are configured to grip the side edges of the secondary battery cell 40 in an upright state, and various configurations are possible.

For example, the cell fixing unit 220 may include two gripping parts 222 and 224 respectively gripping two opposite sides of the secondary battery cell 40.

In this case, the cell fixing unit 220 may further include a cell fixing base unit 228 that is linearly movable in a direction in which the two gripping portions 222 and 224 move away from or close to each other.

The two gripping portions 222 and 224 are installed on the cell fixing base portion 228 and are linearly moved when the secondary battery cell 40 is introduced or discharged into the rolling module 200 and interferes with the secondary battery cell 40. The side edge of the secondary battery cell 40 can be fixed without being.

At this time, the gripping portion (222, 224), as shown in Figure 7, a pair of movable members that are installed to be movable linearly in the plate surface direction (reference to the drawing, Y-axis direction) of the secondary battery cell 40 ( 222a and 222b, 224a and 224b).

The cell detecting unit 226 is installed in the gripping units 222 and 224 to detect whether the secondary battery cell 40 is positioned between the gripping units 222 and 224, and various configurations are possible.

When it is determined that the secondary battery cell 40 has entered between the gripping portions 222 and 224 by the cell detecting unit 226, the gripping portions 222 and 224 are driven to fix the edge of the secondary battery cell 40. can do.

The support plate portion 230 is opposed to the pressing surface (second plate surface) by the pressing roller portion 210 so that the pressing force by the pressing roller portion 210 described above can be surely transferred to the secondary battery cell 40. Various configurations are possible with the configuration that supports the surface (first plate surface) in an upright state.

The support plate portion 230 may include a support plate 232 that interviews the first plate surface. In addition, the support plate portion 230 may further include a support plate pressing portion that presses the support plate 232 toward the first plate surface in order to increase the pressing force on the secondary battery cell 40.

The above-described secondary battery cell rolling module 200, sealing module 300, cutting module 400, taping module 500, folding module 600 and inspection module 700, as shown in Figure 1, Each is composed of a single module and can be arranged in-line.

At this time, at least one degas module 110 disposed between the rolling module 200 and the sealing module 300, unlike other modules, the loading tray 52 between the rolling module 200 and the sealing module 300 And by being installed on one side of the transfer line (L) of the unloading tray 54, it is very easy to expand the system to a plurality of degas modules 110.

The above is only a description of some of the preferred embodiments that can be implemented by the present invention, and as is well known, the scope of the present invention should not be construed as being limited to the above embodiments, and the present invention described above. It will be said that the technical idea and the technical idea together with the fundamental are all included in the scope of the present invention.

40: secondary battery cell 110: degas module
200: secondary battery cell rolling module 300: sealing module
400: cutting module 500: taping module
600: folding module 700: inspection module

Claims (8)

The electrode assembly 10 in which the first electrode sheet 12 and the second electrode sheet 14 are alternately stacked and the separation membrane 16 is positioned between the first electrode sheet 13 and the second electrode sheet 14. ), And a secondary battery cell rolling module 200 for a secondary battery cell 40 having a plate-like structure and including a pouch 20 for sealing the electrode assembly 10,
Receiving the secondary battery cell 40, the charge / discharge process is completed, presses at least one plate surface of the secondary battery cell 40 so as to spread the gelled electrolyte therein evenly. Secondary battery cell rolling module, characterized in that it comprises. The method according to claim 1,
The secondary battery cell rolling module 200, the secondary battery cell characterized in that to perform the rolling process between the charging and discharging process and the degassing process to remove the gas inside the pouch 20 of the secondary battery cell 40 Rolling module 200. The method according to claim 1,
The secondary battery cell rolling module 200,
One side of the pair of plate surfaces of the cell fixing unit 220 for fixing the side edges of the secondary battery cell 40 in an upright state, and a pair of secondary battery cells 40 fixed by the cell fixing unit 220 (hereinafter referred to as the second) Second plate cell rolling module 200, characterized in that it further comprises a support plate portion (230) for supporting. The method according to claim 3,
The cell fixing unit 220,
At least one gripping portion (222, 224) for gripping the side edge of the secondary battery cell (40) in the upright state,
Secondary battery cell characterized in that it comprises a cell detection unit 226 installed in the gripping unit (222, 224) to detect whether the secondary battery cell 40 is located in the gripping unit (222, 224) Rolling module 200. The method according to claim 3,
The support plate portion 230,
Secondary battery cell rolling module 200, characterized in that it comprises a support plate 232 for interviewing the first plate surface, and a support plate pressing portion for pressing the support plate 232 toward the first plate surface. The method according to claim 3,
The pressure roller unit 210,
A roller portion 212 that rolls and presses the opposing surface (hereinafter referred to as a second plate surface) of the first plate surface, a roller vertical drive portion 214 that drives vertical movement of the roller portion 212, and the roller portion ( Secondary battery cell rolling module 200, characterized in that it comprises a roller forward and backward driving unit 216 for driving the forward and backward movement toward the second plate surface of 212). The method according to claim 6,
The roller portion 212,
Characterized in that it comprises a cylindrical roller (212a) made of a cylindrical shape and installed in a longitudinal direction parallel to the horizontal surface, and a rotating shaft member (212b) parallel to the longitudinal direction and penetrating through the center of the cylindrical roller (212a). Secondary battery cell rolling module (200). The method according to claim 7,
The roller up and down driving unit 214 is characterized in that the cylindrical roller 212a moves up and down the cylindrical roller 212a so as to be able to roll around the rotating shaft member 212b with respect to the second plate surface. Secondary battery cell rolling module (200).

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