KR20220101269A - Pressing tray for battery cell and activating apparatus of battery cell including the same - Google Patents

Abstract

The present invention relates to a pressing tray capable of pressing a plurality of battery cells in both directions and a battery cell activation device including the same, which can reduce the movement distance of each plate by pressing the plurality of battery cells in both directions, so that pressure deviation between the battery cells can be reduced.

Description

Pressurized tray and battery cell activation device including the same

The present invention relates to a pressure tray and an activation device for a battery cell including the same.

A secondary battery refers to a battery that can be repeatedly reused through charging and discharging. Such secondary batteries are widely used in the field of advanced electronic devices such as smart phones, notebook computers, and even electric vehicles. In particular, lithium secondary batteries have become more active in recent years because of their high energy density per unit weight and rapid charging compared to other secondary batteries such as conventional lead-acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and nickel-zinc batteries. trend is being used.

Such a secondary battery is a so-called battery cell, and generally includes an electrode assembly including a positive electrode plate, a negative electrode plate and a separator, a pouch case accommodating the electrode assembly, and an electrode that protrudes outside the pouch case and is electrically connected to the electrode assembly It consists of leads. Here, the secondary battery may be provided in the form of a battery module including a plurality of battery cells and a battery pack including a plurality of battery modules.

The battery cell is manufactured in the order of filling an electrolyte solution inside a pouch case accommodating the electrode assembly, completing charging and discharging, and then sealing the pouch case. In the case of a battery cell, when an electrolyte is filled inside the pouch case, that is, when the electrolyte is filled in the pouch case during impregnation with the electrolyte, the pouch case may be convex. The capacity of the battery cells can be increased only when the electrolyte solution is evenly distributed inside the pouch case, so a process of pressing the pouch case is required so that the electrolyte filled inside the pouch case is evenly distributed. used

1 is a perspective view of a conventional pressure tray, FIG. 2 is a side view of FIG. 1 and 2 , the conventional pressure tray 10 includes a plurality of compression plates 11 , and a battery cell is accommodated between the compression plates 11 . In addition, the compression plates 11 are arranged in the X-axis direction and move in the X-axis direction so that the separation distance between each other is narrowed or widened to pressurize or release the pressure of the battery cells.

Furthermore, one surface of the plurality of compression plates 11 is connected to face the main compression plate 12 , and driving shafts 13 are connected to a corner region of the main compression plate 12 . At this time, when the driving shafts 13 are rotated, the main compression plate 12 moves forward and pushes the compression plates 11 in the X-axis direction, thereby gradually narrowing the gap between the compression plates 11 and pressurizing the battery cells. .

However, when the main plate 12 is pressed in one direction, a pressure deviation may occur depending on the distance from the motor. There is a problem of quality deterioration.

Korean Patent Publication No. 2020-0042801

An object of the present invention is to provide a pressurizing tray capable of pressurizing a plurality of battery cells in both directions, and an apparatus for activating a battery cell including the same.

The present invention provides a pressure tray capable of pressing a plurality of battery cells in both directions. In one example, the pressure tray according to the present invention includes a frame for accommodating a plurality of battery cells therein; first and second main plates respectively disposed on the outermost side of the plurality of battery cells to press the battery cells accommodated in the frame; and a driving shaft for fastening the first and second main plates to each other to horizontally move the first and second main plates. In a specific example, the drive shaft has a structure in which a first screw part is formed in an area to which the first main plate is fastened, and a second screw part is formed in an area to which the second main plate is fastened. Furthermore, the first and second screw portions have threads formed in opposite directions to each other, so that the first and second main plates are moved toward or away from each other by rotation of the drive shaft.

In another example, the pressure tray according to the present invention includes a sub-plate between a plurality of battery cells accommodated in a frame, and the sub-plate has a structure that is movably disposed along a driving shaft.

In this case, the plurality of sub-plates have a structure in which a fastening hole is formed in a region fastened to the driving shaft, and the fastening hole has a structure larger than a diameter of the driving shaft.

In another example, it includes a fixed plate disposed in a central region of the drive shaft. In addition, first and second pressure sensors may be disposed on both surfaces of the fixing plate, respectively.

In another example, first and second center plates are respectively disposed on both sides of the fixed plate to be movable along the driving shaft. In a specific example, first and second pressure sensors are included between the first center plate and the fixed plate and between the second center plate and the fixed plate, respectively.

In this case, the first and second center plates may have a structure in which a fastening hole is formed in a region fastened to the driving shaft, and the fastening hole may have a structure larger than a diameter of the driving shaft.

Furthermore, it may include a power generator connected to one end of the drive shaft to transmit a rotational force to the drive shaft.

The present invention provides an apparatus for activating a battery cell including the pressure tray described above. In one example, it may further include a charging/discharging unit electrically connected to the battery cell accommodated in the frame.

According to the pressurization tray of the present invention and the battery cell activation device including the same, it is possible to reduce the movement distance of each plate by pressing a plurality of battery cells in both directions, thereby reducing the pressure deviation between each battery cell. there is an advantage

1 is a perspective view of a conventional pressure tray.
FIG. 2 is a side view of FIG. 1 ;
3 is a perspective view of a pressure tray according to an embodiment of the present invention.
4 is a plan view of a pressure tray according to an embodiment of the present invention.
5 is a view showing the operating mechanism of the drive shaft of the pressure tray according to an embodiment of the present invention.
6 is a plan view of a pressure tray according to another embodiment of the present invention.
7 is a view showing the operating mechanism of the drive shaft of the pressure tray according to another embodiment of the present invention.
8 is a view showing the operating mechanism of the drive shaft of the pressure tray according to another embodiment of the present invention.
9 is a view showing the operating mechanism of the drive shaft of the pressure tray according to another embodiment of the present invention.

Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof. Also, when a part of a layer, film, region, plate, etc. is said to be “on” another part, this includes not only cases where it is “directly on” another part, but also cases where another part is in between. Conversely, when a part of a layer, film, region, plate, etc. is said to be “under” another part, this includes not only cases where it is “directly under” another part, but also cases where there is another part in between. In addition, in the present application, “on” may include the case of being disposed not only on the upper part but also on the lower part.

The present invention relates to a pressure tray and an activation device for a battery cell including the same.

In general, in the manufacture of a pouch-type battery cell, an electrode assembly including a negative electrode, a separator, and a positive electrode is placed in a pouch-type case, and an electrolyte is injected and the edge is sealed. Then, the battery is activated through several charge/discharge cycles. In this process, gas is generated, and in order to degas it, the sealing part of the pouch is partially opened and then re-sealed. At this time, when the electrolyte solution is filled inside the pouch of the pouch-type battery cell, the both sides of the pouch itself become convex to the outside, so to increase the capacity of the battery, it is necessary to press the both sides of the battery cell (squeezing). For this purpose, a pressure tray for pressing the battery cells is used.

On the other hand, the conventional pressure tray includes a main plate for moving a plurality of battery cells, pressurizing the main plate in a direction in which the plurality of battery cells are arranged from one side. However, when the main plate is pressed in one direction, there is a problem in that the quality of the manufactured battery cells is deteriorated due to variations in the pressure applied to each battery cell.

Accordingly, the present invention provides a pressure tray capable of pressurizing a plurality of battery cells in both directions, and a battery cell activation device including the same. Specifically, according to the present invention, the movement distance of each plate can be reduced by pressing the plurality of battery cells in both directions, and thus, there is an advantage in that the pressure deviation between the battery cells can be reduced.

Hereinafter, a pressure tray according to the present invention and a battery cell activation device including the same will be described in detail.

In one example, the pressure tray according to the present invention is a frame for accommodating a plurality of battery cells therein, each disposed on the outermost side of the plurality of battery cells, first and second main plates for pressing the battery cells housed in the frame and a driving shaft for fastening the first and second main plates to each other to horizontally move the first and second main plates. In this case, the drive shaft has a structure in which a first screw part is formed in an area to which the first main plate is fastened, a structure in which a second screw part is formed in an area to which the second main plate is fastened, and the first and second screw parts are threaded. These are formed in opposite directions, and the first and second main plates may have a structure in which they move toward or away from each other by rotation of the driving shaft.

The battery cell accommodated in the pressure tray according to the present invention may be a pouch-type battery cell. For example, the battery cell is a pouch-type unit cell, and an electrode assembly having a cathode/separator/cathode structure is embedded in a laminate sheet casing in a state in which it is connected to electrode leads formed outside of the casing. The electrode leads are drawn out of the sheet and may extend in the same direction or opposite directions.

The frame forms a predetermined space therein so that a plurality of pouch-type battery cells are accommodated in the longitudinal direction, and has a substantially hexahedral shape. The frame may be configured to include a bottom surface and sidewalls on both sides of the bottom surface to support the battery cells accommodated therein. The sidewall may have a structure formed on one side and the other side along a direction in which a plurality of battery cells are accommodated. In addition, the frame may have an open top structure so that the battery cells can be drawn out and mounted.

In one example, the first and second main plates press the plurality of battery cells accommodated in the frame, and are disposed at the outermost portions of the plurality of battery cells. For example, if 36 battery cells are disposed inside the frame, the first main plate may be disposed on the front surface of the first battery cell, and the second main plate may be disposed on the front surface of the 36th battery cell. In addition, the first and second main plates press both surfaces of the plurality of battery cells by driving the driving shaft.

The first and second main plates may be made of a metal material having high mechanical rigidity. The first and second main plates may be made of, for example, reinforced plastic, reinforced ceramic, or tempered glass, as long as they have excellent mechanical rigidity in addition to a metal material.

In one example, the first and second main plates are fastened to the drive shaft. In a specific example, drive shafts are connected to edge regions of the first and second plates. The driving shafts may have a structure extending along a direction in which the battery cells are accommodated, and may have a structure that is fastened to the sidewall of the frame. Each of the drive shafts has one end connected to the gears G that rotate in the forward and reverse directions by a motor, so that they can rotate in the forward and reverse directions. The drive shaft may include a total of four, one each above and below the right side and the left side of the frame. However, the present invention is not limited thereto. The pressure tray according to the present invention includes a plurality of driving shafts, but for convenience of description, a driving method of one driving shaft will be described.

In one example, the drive shaft has a structure in which a first screw part is formed in an area to which the first main plate is fastened, and a second screw part is formed in an area to which the second main plate is fastened.

In this case, the first and second threaded portions may have a structure in which threads are formed in opposite directions to each other. Accordingly, the first and second main plates respectively fastened to the first and second screw portions may have a structure in which they move toward or away from each other by rotation of the driving shaft. For example, when the driving shaft rotates in the forward direction, the first and second main plates may move in a direction closer to each other to pressurize the plurality of battery cells disposed between the first and second plates. Conversely, when the driving shaft is rotated in the reverse direction, the first and second main plates may move away from each other.

Furthermore, the first and second main plates may have insertion holes into which the driving shaft is inserted. Specifically, the insertion hole of the first main plate may have a structure in which a screw line having a structure corresponding to the screw line of the first screw part is formed, and the insertion hole (not shown) of the second main plate is a screw line corresponding to the screw line of the second screw part. It may be a structure in which a thread of the structure is formed.

With the above-described structure, the pressure tray according to the present invention can press the plurality of battery cells in both directions, and thus, there is an advantage in that the pressure deviation between the plurality of battery cells can be reduced.

In another example, the pressure tray according to the present invention includes a sub-plate disposed between a plurality of battery cells accommodated in the frame. In a specific example, the sub-plate is disposed between the plurality of battery cells so as to face the front and rear surfaces of the plurality of battery cells, and is disposed above the bottom surface of the frame. In addition, the sub-plate may serve to support the battery cell in contact with both sides of the battery cell in a predetermined area so that the battery cell can stand while being inserted into the frame. Meanwhile, the spacing between the sub-plates may be formed to be spaced apart from each other by the thickness of the pouch-type battery cell.

The sub-plates are not deformed even by high heat and pressure, and are plate-shaped bodies with high mechanical rigidity, and a pouch-type battery cell is sandwiched between them and serves to press both sides of the sub-plates.

Meanwhile, the sub-plate may have a structure arranged to be movable in a horizontal direction along a driving shaft. However, the sub-plate is not moved by the rotation of the driving shaft, but is moved by the pressure of the first and second main frames disposed at the outermost sides of the plurality of battery cells.

Furthermore, the plurality of sub-plates may have a fastening hole formed in a region where they are fastened to the driving shaft, and the fastening hole may have a structure larger than a diameter of the driving shaft. Here, the sub-plate has been described as being coupled to the drive shaft, but may be coupled to an additional guide rail or guide bar.

A plurality of battery cells can be moved in a horizontal direction in an upright state by the sub-plate, and the battery cells can be pressurized more stably.

In another example, the pressure tray according to the present invention includes a fixing plate disposed in the central region of the drive shaft.

In a specific example, the fixing plate has a structure fixed to the central region of the driving shaft. Or it may be a structure fixed to the bottom surface of the frame. In the pressure tray according to the present invention, an area in which the first main plate is disposed and an area in which the second main plate is disposed based on the fixed plate may be divided into first and second areas, respectively. Accordingly, it is possible to reduce the movement distance of the sub-plate and the battery cells disposed in each region, and there is an advantage in that the pressure deviation between the plurality of battery cells can be reduced.

In another example, the pressure tray according to the present invention includes first and second pressure sensors respectively disposed on both sides of the fixing plate.

In a specific example, the first and second pressure sensors are load cells, and the first pressure sensor measures the pressure generated in the first region when the first main plate moves toward the fixed plate. In addition, the second pressure sensor measures the pressure generated in the second area when the second main plate moves toward the fixed plate. By including the first and second pressure sensors in each region, it is possible to easily measure the pressure applied to the battery cells when the battery cells are pressed in both directions. Furthermore, pressure values measured by the first and second pressure sensors may be compared.

In another example, in the pressure tray according to the present invention, the first and second center plates on both sides of the fixed plate are movably disposed along the drive shaft, respectively. In this case, first and second pressure sensors may be included between the first center plate and the fixed plate and between the second center plate and the fixed plate, respectively.

Furthermore, in the first and second center plates, a fastening hole is formed in a region fastened to the driving shaft, and the fastening hole may have a structure larger than a diameter of the driving shaft. That is, the first and second center plates may be freely movable along the driving shaft.

Specifically, the first center plate may move toward the first pressure sensor by pressing the first main plate. In addition, the first pressure sensor may easily measure the pressure generated in the first area. In addition, the second center plate may move toward the second pressure sensor by pressing the second main plate. In addition, the second pressure sensor may easily measure the pressure generated in the second region.

In one example, the pressure tray according to the present invention includes a power generator connected to one end of the drive shaft to transmit a rotational force to the drive shaft. In a specific example, the power generating unit applies a rotational force to the drive shaft by manpower using a manual lever, but in some cases, a motor or the like may be installed. The first and second main plates may move toward or away from each other when the driving shaft rotates.

Furthermore, the present invention provides an apparatus for activating a battery cell including the pressure tray described above. In a specific example, the battery cell activation device according to the present invention further includes a charging/discharging unit electrically connected to the battery cell accommodated in the frame.

The charging/discharging unit may activate the battery cell through charging and discharging electrically connected to the electrode assembly of the battery cell. In this case, the charging/discharging unit is electrically connected to the electrode lead of the battery cell through the charging/discharging line. The charging/discharging unit may supply charging power to the secondary battery or receive discharging power from the secondary battery. Here, supplying the charging power to the secondary battery is not necessarily limited to the meaning of supplying sufficient power to the extent to buffer the secondary battery. Supplying charging power to the secondary battery may be used as supplying power sufficient to measure voltages of the first electrode lead, the second electrode lead, and the like for performance evaluation of the secondary battery. Since the meaning of receiving discharge power from the secondary battery can be used in the same way, repeated descriptions will be omitted.

Hereinafter, various forms of the pressure tray according to the present invention will be described with reference to the drawings.

(First embodiment)

Figure 3 is a perspective view of a pressure tray according to an embodiment of the present invention, Figure 4 is a plan view of the pressure tray according to an embodiment of the present invention.

3 to 4 , the pressure tray 100 according to the present invention includes a frame 110 for accommodating a plurality of battery cells therein; first and second main plates 120 and 130 respectively disposed on the outermost side of the plurality of battery cells to press the battery cells accommodated in the frame 110 ; and a driving shaft 140 for horizontally moving the first and second main plates 120 and 130 by fastening the first and second main plates 120 and 130 to each other.

The frame 110 forms a predetermined space therein so that a plurality of pouch-type battery cells are accommodated in the longitudinal direction, and has a substantially hexahedral shape. The frame 110 is configured to include a bottom surface 111 and sidewalls 112 on both sides of the bottom surface 111 to support the battery cells. The sidewall 112 has a structure formed on one side and the other side along a direction in which a plurality of battery cells are accommodated. In addition, the frame 110 may have an open top so that the battery cells can be drawn out and mounted.

The first and second main plates 120 and 130 press the plurality of battery cells accommodated in the frame 110 , and are disposed at the outermost portions of the plurality of battery cells. For example, if 36 battery cells are disposed inside the frame, the first main plate 120 is disposed on the front side of the first battery cell, and the second main plate 130 is disposed on the front side of the 36th battery cell. . In addition, the first and second main plates 120 and 130 press both surfaces of the plurality of battery cells by driving the driving shaft 140 , which will be described later.

Meanwhile, the first and second main plates 120 and 130 have a structure coupled to the drive shaft 140 . Specifically, the driving shafts 140 are connected to edge regions of the first and second plates 120 and 130 . The drive shafts 140 have a structure that extends along a direction in which the battery cells are accommodated, and are fastened to the sidewall of the frame 110 . On the other hand, each of the drive shafts 140 is connected to the gears (G) rotating in the forward and reverse directions by the motor (M) at one end, so that they can rotate in the forward and reverse directions. The drive shaft 140 includes a total of four, one above and below the right side and the left side of the frame 110 . However, the present invention is not limited thereto. Meanwhile, in FIGS. 3 to 4 , the driving shaft 140 is partially omitted.

5 is a view showing the operating mechanism of the drive shaft of the pressure tray according to an embodiment of the present invention. Referring to FIG. 5 , in the drive shaft 140 , a first screw part 141 is formed in an area to which the first main plate 120 is fastened, and a second screw part ( 142) is formed.

At this time, the first and second threaded portions 141 and 142 have a structure in which threads are formed in opposite directions to each other. Accordingly, the first and second main plates 120 and 130 respectively fastened to the first and second screw portions 141 and 142 have a structure in which they move toward or away from each other by the rotation of the driving shaft 140 . . For example, when the driving shaft 140 rotates in the forward direction, the first and second main plates 120 and 130 move in a direction closer to each other and a plurality of batteries disposed between the first and second plates 120 and 130 . Cells can be pressurized. Conversely, when the driving shaft 140 is rotated in the reverse direction, the first and second main plates 120 and 130 move away from each other.

Furthermore, although not shown in the drawings, an insertion hole (not shown) into which the driving shaft 140 is inserted is formed in the first and second main plates 120 and 130 . Specifically, the insertion hole of the first main plate 120 has a structure in which a screw line having a structure corresponding to the screw line of the first screw part 141 is formed, and the insertion hole (not shown) of the second main plate 130 is the first screw line. 2 has a structure in which a screw line having a structure corresponding to the screw line of the screw portion 142 is formed.

With the above-described structure, the pressure tray 100 according to the present invention can press the plurality of battery cells in both directions, and accordingly, there is an advantage in that the pressure deviation between the plurality of battery cells can be reduced.

(Second embodiment)

6 is a plan view of a pressure tray according to another embodiment of the present invention. Referring to FIG. 6 , the pressure tray 200 according to the present invention includes a sub-plate 250 disposed between a plurality of battery cells accommodated in a frame 210 .

The sub-plate 250 is disposed between the plurality of battery cells so as to face the front and rear surfaces of the plurality of battery cells, and is disposed above the bottom surface of the frame 210 . Specifically, the sub-plate 250 serves to support the battery cell in contact with both sides of the battery cell in a predetermined area so that the battery cell can stand while being inserted into the frame 210 . A gap between the sub-plates 250 is formed to be spaced apart from each other by the thickness of the pouch-type battery cell.

On the other hand, the sub-plate 250 has a structure arranged to be movable in the horizontal direction along the driving shaft 240 . However, the sub-plate 250 is not moved by the rotation of the driving shaft 240, but is moved by the pressure of the first and second main frames 220 and 230 disposed at the outermost sides of the plurality of battery cells. will be.

Although not shown in the drawings, the plurality of sub-plates 250 have a fastening hole (not shown) formed in a region where they are fastened to the driving shaft 240 , and the fastening hole has a structure larger than the diameter of the driving shaft.

A plurality of battery cells can be moved in a horizontal direction in an upright state by the sub-plate 250 , and the battery cells can be pressurized more stably.

Since the description of the configuration of the pressure tray of the present invention has been described above, a detailed description of each configuration will be omitted.

(Third embodiment)

7 is a view showing the operating mechanism of the drive shaft of the pressure tray according to another embodiment of the present invention. Referring to FIG. 7 , the pressure tray according to the present invention includes a fixing plate 360 disposed in the central region of the driving shaft 340 .

The fixing plate 360 has a structure fixed to the central region of the driving shaft 340 . Although not shown in the drawings, it may have a structure fixed to the bottom surface of the frame. An area in which the first main plate 320 is disposed and an area in which the second main plate 330 is disposed based on the fixing plate 360 are divided into first and second areas, respectively. Accordingly, it is possible to reduce the movement distance of the sub-plate and the battery cells disposed in each region, and there is an advantage in that the pressure deviation between the plurality of battery cells can be reduced.

Since the description of the configuration of the pressure tray of the present invention has been described above, a detailed description of each configuration will be omitted.

(Fourth embodiment)

8 is a view showing the operating mechanism of the drive shaft of the pressure tray according to another embodiment of the present invention. Referring to FIG. 8 , the pressure tray according to the present invention has a structure in which a fixing plate 460 is disposed in the central region of the driving shaft 440 . In addition, first and second pressure sensors 471 and 472 are respectively disposed on both surfaces of the fixing plate 460 .

The first and second pressure sensors 471 and 472 are load cells, and the first pressure sensor 471 detects the pressure generated in the first region when the first main plate 420 moves toward the fixed plate 460. measure In addition, the second pressure sensor 472 measures the pressure generated in the second area when the second main plate 430 moves toward the fixed plate 460 . By including the first and second pressure sensors 471 and 472 in each region, pressure applied to the battery cell can be easily measured when the battery cell is pressurized in both directions. Furthermore, pressure values measured by the first and second pressure sensors 471 and 472 may be compared.

Since the description of the configuration of the pressure tray of the present invention has been described above, a detailed description of each configuration will be omitted.

(fifth embodiment)

9 is a view showing the operating mechanism of the drive shaft of the pressure tray according to another embodiment of the present invention. Referring to FIG. 9 , the pressure tray 500 according to the present invention has a structure in which a fixing plate 560 is disposed in the central region of the driving shaft 540 .

In addition, first and second center plates 581 on both sides of the fixed plate 560 are movably disposed along the driving shaft 540 . In this case, first and second pressure sensors 571 and 572 are included between the first center plate 581 and the fixing plate 550 and between the second center plate 582 and the fixing plate 550 , respectively.

Although not shown in the drawings, a fastening hole (not shown) is formed in the region where the first and second center plates 581 and 582 are fastened to the driving shaft 540, and the fastening hole is larger than the diameter of the driving shaft. have a structure That is, the first and second center plates 581 and 582 are freely movable along the drive shaft.

The first center plate 581 moves toward the first pressure sensor 571 by the pressure of the first main plate 520 . Accordingly, the first pressure sensor 571 may easily measure the pressure generated in the first region. In addition, the second center plate 582 moves toward the second pressure sensor 572 by the pressure of the second main plate 530 . Accordingly, the second pressure sensor 572 may easily measure the pressure generated in the second region.

Since the description of the configuration of the pressure tray of the present invention has been described above, a detailed description of each configuration will be omitted.

In the above, preferred embodiments of the present invention have been described with reference to the drawings, but those skilled in the art or those having ordinary skill in the art will not depart from the spirit and scope of the present invention described in the claims. It will be understood that various modifications and variations of the present invention can be made without departing from the scope of the present invention.

Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1: battery cell
10: pressure tray
11: crimp plate
12: main crimp plate
13: drive shaft
100, 200, 300, 400, 500: pressure tray
110, 210: frame
111: bottom surface
112: side wall
120, 220, 320, 420, 520: first main plate
130, 230, 330, 430, 530: second main plate
140, 240, 340, 440, 540: drive shaft
141: first threaded portion
142: second threaded portion
250, 350: sub plate
360, 460, 560: fixing plate
471, 571: first pressure sensor
472, 572: second pressure sensor
581: first center plate
582: second center plate
M: motor
G: gear

Claims (10)

a frame accommodating a plurality of battery cells therein;
first and second main plates respectively disposed on the outermost side of the plurality of battery cells to press the battery cells accommodated in the frame; and
and a drive shaft for fastening the first and second main plates to each other to move the first and second main plates in a horizontal direction,
The drive shaft has a structure in which a first screw part is formed in an area to which the first main plate is fastened, and a structure in which a second screw part is formed in an area to which the second main plate is fastened,
The first and second screw portions, the screw threads are formed in opposite directions to each other, and the first and second main plates are moved in a direction closer to or away from each other by the rotation of the drive shaft.
The method of claim 1,
A sub-plate is included between a plurality of battery cells accommodated in the frame,
The sub-plate is a pressure tray having a structure that is movably disposed along a driving shaft.
3. The method of claim 2,
The plurality of sub-plates have a structure in which a fastening hole is formed in a region fastened to the drive shaft,
The fastening hole is a pressure tray having a structure larger than the diameter of the drive shaft.
The method of claim 1,
A pressure tray comprising a fixing plate disposed in a central region of the drive shaft.
5. The method of claim 4,
A pressure tray having a structure in which first and second pressure sensors are disposed on both sides of the fixing plate, respectively.
5. The method of claim 4,
Based on the fixed plate, the first and second center plates, respectively, on both sides are movably disposed along the drive shaft,
A pressure tray including first and second pressure sensors, respectively, between the first center plate and the fixed plate and between the second center plate and the fixed plate. 7. The method of claim 6,
The first and second center plates have a structure in which a fastening hole is formed in a region fastened to the driving shaft, and the fastening hole is a pressure tray having a structure larger than a diameter of the driving shaft.
The method of claim 1,
A pressure tray including a power generator connected to one end of the drive shaft to transmit a rotational force to the drive shaft.
The activation device of a battery cell comprising the pressure tray according to claim 1 .
10. The method of claim 9,
The battery cell activation device further comprising a charging/discharging unit electrically connected to the battery cell accommodated in the frame.

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