Battery cell pressurization device and battery cell manufacturing system including the same

Abstract

A battery cell pressurizing device according to one embodiment of the present invention includes a plurality of mounting bases, each configured to mount at least one battery cell and arranged in a line in one direction; a pressurizing unit configured to pressurize the battery cells mounted on the plurality of mounting bases by pressurizing the plurality of mounting bases in a direction that brings them into close contact with each other; and a plurality of pressure sensors distributed among the plurality of mounting bases and configured to sense the pressure applied to the battery cells mounted on each mounting base separately for each battery cell, or to sense the pressure applied to each battery cell separately for different parts of each battery cell.

Description

Technical Field

[0001] This application claims priority based on Korean Patent Application No. 10-2023-0116506 filed on September 1, 2023, and all of the content disclosed in the specification and drawings of the said application is incorporated into this application.

[0002] The present invention relates to a pressurizing device for battery cells and a manufacturing system for battery cells including the same, and more particularly, to a pressurizing device for battery cells used to pressurize battery cells assembled in the manufacturing process of battery cells, and a manufacturing system for battery cells including such a pressurizing device for battery cells.

Background Art

[0003] Generally, a secondary battery refers to a battery that can be repeatedly charged and discharged, such as a lithium-ion battery, a lithium polymer battery, a nickel cadmium battery, a nickel metal hydride battery, a nickel zinc battery, etc. A battery cell corresponding to the most basic secondary battery can provide an output voltage of approximately 2.5V to 4.2V.

[0004] Such a battery cell is assembled by a method in which an electrode assembly formed by laminating a positive electrode and a negative electrode with a separator interposed therebetween is housed in a case together with an electrolyte substance and the case is sealed. The battery cell assembled in this way undergoes a pressurizing process in which it is pressurized by a predetermined pressure in an activation step or a test step. Since such a pressurizing process is performed by a method of pressurizing several to several tens of battery cells simultaneously in order to improve process efficiency, there is a risk that pressure variation may occur between the battery cells.

[0005] Therefore, there is a need for a technology that can monitor the pressure applied to the battery cells in real time during the pressurization process, and that can quickly respond to pressure variations between the battery cells.

[0006] However, existing technologies that measure the pressure of a pressurizing device using separate pressure-sensitive paper or pressure measuring devices have the problem that the pressurizing process is time-consuming and costly, and that it is not possible to monitor the pressure applied to the battery cells in real time, because the pressure-sensitive paper or pressure measuring device must be installed on the pressurizing device before the pressurizing process to measure the pressurizing force of the pressurizing device, and then the installed pressure-sensitive paper or pressure measuring device must be removed.

[0007] Furthermore, as disclosed in Patent Document 1 below, for example, existing technologies use a load cell installed in a pressurizing device to measure the overall pressure applied to the battery cell. As a result, they cannot detect pressure variations between battery cells or pressure variations between different parts of a particular battery cell. Consequently, they cannot guarantee the uniformity of the quality of the manufactured battery cells and cannot reduce the defect rate. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Korean Published Patent Publication No. 10-2022-0101269 [Overview of the project] [Problems that the invention aims to solve]

[0009] The technical problem that this invention aims to solve is to provide a battery cell pressurizing device and a battery cell manufacturing system including the same, which can monitor the pressure applied to the battery cell in real time while reducing the time and cost of the pressurizing process for pressurizing the battery cell.

[0010] Another technical problem that the present invention aims to solve is to provide a battery cell pressurizing device and a battery cell manufacturing system including the same that can sense pressure variations between battery cells or pressure variations between different parts of a particular battery cell that occur in the pressurizing process, thereby ensuring uniformity of the quality of manufactured battery cells and reducing the defect rate. [Means for solving the problem]

[0011] A battery cell pressurizing device according to one aspect of the present invention includes: a plurality of mounting bases, each configured to mount at least one battery cell and arranged in a line in one direction; a pressurizing unit configured to pressurize the battery cells mounted on the plurality of mounting bases by pressurizing the plurality of mounting bases in a direction that brings them into close contact with each other; and a plurality of pressure sensors distributed among the plurality of mounting bases and configured to sense the pressure applied to the battery cells mounted on each mounting base separately for each battery cell, or to sense the pressure applied to different parts of each battery cell separately.

[0012] In one embodiment, each of the mounting bases may be provided with mounting grooves on which battery cells are mounted.

[0013] In one embodiment, each of the multiple pressure sensors may be placed inside the mounting groove of a corresponding mounting base among the multiple mounting bases.

[0014] In one embodiment, each of the pressure sensors may be positioned between the inner surface of the mounting groove and the battery cell mounted in the mounting groove, and may have a strap shape extending along the inner surface of the mounting groove.

[0015] In one embodiment, the battery cell pressurizing device may further include a cushioning pad positioned between the inner surface of the mounting groove and the battery cell mounted in the mounting groove to alleviate the pressure applied to the mounted battery cell.

[0016] In one embodiment, the plurality of pressure sensors may include pressure sensors arranged together on the same mounting base, and the pressure sensors arranged together on the same mounting base may be configured to sense pressure applied to different parts of a battery cell mounted on the same mounting base.

[0017] In one embodiment, the plurality of mounting bases include a first mounting base and a second mounting base arranged adjacent to each other, wherein the first mounting base may include a mounting portion on which a first battery cell is mounted, and a pressurizing portion configured to pressurize a second battery cell mounted on the second mounting base by the pressure applied by the pressurizing unit.

[0018] In one embodiment, the battery cell pressurizing device may further include a stopper interposed between adjacent mounting bases among the plurality of mounting bases to limit the distance between the adjacent mounting bases.

[0019] In one embodiment, the stopper may have a plate structure, and the center of the plate structure may be provided with a through hole through which a battery cell mounted on one of the adjacent mounting bases is located.

[0020] In one embodiment, the battery cell pressurization device may further include a control unit configured to detect abnormal battery cells among the battery cells that have been subjected to a pressure that does not meet predetermined pressure conditions, using the sensing results of the plurality of pressure sensors.

[0021] In one embodiment, the control unit may stop the operation of the pressurizing unit if an abnormal battery cell is detected.

[0022] In one embodiment, the battery cell pressurizing device may further include an output unit that outputs identification information to identify the mounting base on which the abnormal battery cell is mounted, among the plurality of mounting bases, when the abnormal battery cell is detected by the control unit.

[0023] A battery cell manufacturing system according to another aspect of the present invention includes a pressurizing device for a battery cell according to any one of the above-described embodiments.

Advantages of the Invention

[0024] According to the present invention, a plurality of pressure sensors are dispersedly arranged on a plurality of mounting bases configured to respectively mount at least one battery cell, and by sensing in real time the pressure applied to the battery cells mounted on the respective mounting bases, it is possible to monitor in real time the pressure applied to the battery cells while reducing the time and cost of the pressurizing process for the battery cells.

[0025] Further, pressure sensors arranged together on the same mounting base among the plurality of mounting bases sense the pressure applied to different portions of the battery cells mounted on the same mounting base, so that it is possible to sense not only the pressure variation between the battery cells but also the pressure variation between different portions of a specific battery cell. As a result, it is possible to guarantee the uniformity of the quality of the manufactured battery cells and moreover reduce the defective rate.

[0026] Furthermore, by the control unit detecting an abnormal battery cell to which a pressure that does not satisfy a predetermined pressure condition is applied among the battery cells pressurized by the pressurizing unit using the sensing results of the plurality of pressure sensors, it becomes possible to promptly respond when an abnormal battery cell occurs.

[0027] Furthermore, it should be clearly understood from the following description that a person having ordinary knowledge in the technical field to which the present invention pertains can solve various technical problems not mentioned above in the various embodiments according to the present invention.

Brief Description of the Drawings

[0028] [Figure 1]This figure shows a battery cell pressurization device according to one embodiment of the present invention. [Figure 2] This figure shows an example of a battery cell. [Figure 3] This figure shows a mounting base for a battery cell pressurizing device according to one embodiment of the present invention. [Figure 4] This figure shows a mounting base and pressure sensor for a battery cell pressurization device according to one embodiment of the present invention. [Figure 5] This is an enlarged view showing the E1 portion of Figure 4. [Figure 6] This figure shows a buffer pad for a battery cell pressurizing device according to one embodiment of the present invention. [Figure 7] This figure shows a stopper for a battery cell pressurizing device according to one embodiment of the present invention. [Figure 8] This flowchart shows the process for detecting abnormal battery cells in a battery cell pressurizing device according to one embodiment of the present invention. [Figure 9] This is a block diagram showing a battery cell manufacturing system according to one embodiment of the present invention. [Modes for carrying out the invention]

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to clarify the solutions to the technical problems of the present invention. However, in describing the present invention, if it is deemed that describing known technologies related to the present invention may unnecessarily obscure the gist of the present invention, such descriptions may be omitted. Furthermore, the terms used in describing the present invention are defined considering the functions of the present invention, and these terms may differ depending on the intentions or conventions of designers, manufacturers, etc. Therefore, it is appropriate that the definitions of terms described later be defined in light of the content throughout this specification.

[0030] Figure 1 shows a battery cell pressurizing device 100 according to one embodiment of the present invention.

[0031] As shown in Figure 1, a battery cell pressurizing device 100 according to one embodiment of the present invention includes a mounting base 110 and a pressurizing unit 120.

[0032] The mounting base 110 is configured to mount at least one battery cell. The battery cell pressurizing device 100 includes a plurality of such mounting bases 110. These plurality of mounting bases 110 are arranged in a line in one direction.

[0033] The pressurizing unit 120 is configured to pressurize the battery cells mounted on the multiple mounting bases 110 by applying pressure to the multiple mounting bases 110 in a direction that brings them into close contact with each other.

[0034] As will be explained again below, the battery cell pressurizing device 100 further includes a plurality of pressure sensors. These plurality of pressure sensors are distributed among a plurality of mounting bases 110 and are configured to sense the pressure applied to the battery cells mounted on each mounting base 110 separately for each battery cell, or to sense the pressure separately for each different part of each battery cell.

[0035] For example, once battery cells are mounted on a plurality of mounting bases 110, the pressurizing unit 120 can pressurize the battery cells by pressurizing the plurality of mounting bases 110 so that they are in close contact with each other. For this purpose, the pressurizing unit 120 may include a motor 122 that generates a driving force, first and second pressurizing plates 124 and 126 that move by the driving force of the motor 122 to pressurize the mounting bases, and a guide shaft 128 that guides the first and second pressurizing plates 124 and 126 to pressurize the plurality of mounting bases 110.

[0036] In one embodiment, the first pressure plates 124 and 126 of the pressure unit 120 are configured to move by the driving force of the motor 122, while the second pressure plate 126 may be configured to be fixed in a predetermined position.

[0037] In one embodiment, the battery cell pressurizing device 100 may include a control unit 130. In this case, the control unit 130 may be configured to control the overall operation of the battery cell pressurizing device 100.

[0038] In particular, the control unit 130 is configured to use the sensing results of pressure sensors distributed across the multiple mounting bases 110 to detect abnormal battery cells among the battery cells mounted on the multiple mounting bases 110 that have been subjected to pressure that does not meet predetermined pressure conditions. For example, the pressure conditions may include a first condition that the pressure applied to each battery cell should fall within a predetermined first pressure range, and a second condition that the pressure applied to different parts of each battery cell should fall within a predetermined second pressure range.

[0039] Furthermore, if the control unit 130 detects an abnormal battery cell to which a pressure that does not meet the pressure conditions has been applied, it may stop the operation of the pressurizing unit 120.

[0040] Such a control unit 130 may include a general-purpose processor or an application-specific integrated circuit (ASIC) for activating the control logic described above, and may selectively include a wide variety of other hardware such as registers and memory. Such a control unit 130 can be realized through a combination of hardware and software. That is, the control logic of the control unit 130 is composed of a computer program and stored in the control unit 130's own memory or external memory (not shown), and the stored computer program can be activated using the hardware of the control unit 130.

[0041] In one embodiment, the battery cell pressurizing device 100 may include an output unit 140. In this case, the output unit 140 may be configured to output identification information that identifies which of the plurality of mounting bases 110 the abnormal battery cell is mounted on, when the control unit 130 detects the abnormal battery cell. In this case, the identification information may be output as a visual signal, an auditory signal, or an audiovisual signal. Depending on the embodiment, the output unit 140 may be configured to output the identification information together with a predetermined alarm signal.

[0042] Such an output unit 230 may selectively include a visual output device such as a monitor, display panel, touchscreen, or light-emitting diode. The output unit 230 may also include an audio device such as a speaker.

[0043] In this way, the control unit 130 uses the sensing result of the pressure sensor to detect an abnormal battery cell to which a pressure that does not meet predetermined pressure conditions has been applied, and outputs identification information via the output unit 140 to identify the mounting base to which such an abnormal battery cell is mounted. This enables a quick response when an abnormal battery cell occurs, and reduces the defect rate of manufactured battery cells.

[0044] Figure 2 shows an example of a battery cell 20.

[0045] As shown in Figure 2, the battery cell 20 may include an electrode assembly 22 in which a positive electrode and a negative electrode are stacked on top of each other with a separator in between, and a case 28 that houses such an electrode assembly 22 together with an electrolyte material in an internal space S1.

[0046] The battery cell 20 may further include electrode leads 24 electrically connected to the electrode assembly 22, and sealing tape 26 that seals around such electrode leads 24.

[0047] The case 28 of the battery cell 20 may include a first case portion 28a and a second case portion 28b that are combined to form an internal space S1. The case 28 can be sealed by hermetically coupling the peripheral portion of the first case portion 28a and the peripheral portion of the second case portion 28b with respect to each other while the electrode assembly 22 is housed in its internal space S1.

[0048] The battery cell 20 assembled in this manner undergoes a pressurization process in which the battery cell 20 is pressurized to a predetermined pressure in order to impregnate the electrode assembly 22 with the electrolyte material contained in the battery cell 20.

[0049] Furthermore, the assembled battery cell 20 undergoes a short-circuit test process in which the current of the battery cell 20 is inspected while the battery cell 20 is pressurized via a High Pressure Current Detection (HPCD) device.

[0050] The battery cell pressurization device 100 according to the present invention can improve the manufacturing efficiency of battery cells and reduce manufacturing costs by integrating the above-described pressurization process and short-circuit testing process.

[0051] Figure 3 shows a mounting base for a battery cell pressurizing device according to one embodiment of the present invention.

[0052] As shown in Figure 3, the battery cell pressurizing device 100 may include mounting bases arranged adjacent to each other.

[0053] Each mounting base 110 may be configured to mount at least one battery cell 20. Furthermore, the mounting bases with the battery cells 20 mounted may be arranged in a stacked fashion in one direction (the X-axis direction).

[0054] The pressurizing unit 120 of the battery cell pressurizing device 100 described above can pressurize the mounting base in a direction that brings it into close contact with the other, using pressurizing plates 124 and 126 positioned at both ends of the mounting base. By pressing the mounting base in a direction that brings it into close contact with the other, the battery cells mounted on the mounting base can be pressurized.

[0055] Figure 4 shows a mounting base 110 and a pressure sensor 150 for a battery cell pressurizing device according to one embodiment of the present invention.

[0056] As shown in Figure 4, the mounting base 110 has a plate shape overall and may be equipped with mounting grooves 112 into which the battery cells are mounted.

[0057] For example, the mounting base 110 may include a mounting section P1 on which a first battery cell is mounted, which is provided with a mounting groove 112, and a pressurizing section P2 configured to pressurize a second battery cell mounted on the other mounting base by the pressure applied by the pressurizing unit 120.

[0058] The pressure sensor 150 may be positioned inside the mounting groove 112 of the corresponding mounting base 110. In this case, the pressure sensor 150 may be positioned between the inner surface of the mounting groove 112 and the battery cell mounted in the mounting groove 112.

[0059] In one embodiment, the pressure sensor 150 may have a strap shape extending along the inner surface of the mounting groove 112 so as to be able to sense the pressure applied throughout the battery cell. In this case, the mounting base 110 may include a connection groove 114 that provides a connection passage between the pressure sensor 150 and a control unit 130 located outside the mounting base 110 or other devices. That is, one end of the pressure sensor 150 may extend through the connection groove 114 of the mounting base 110 to connect to the control unit 130 or other devices.

[0060] In one embodiment, the pressure sensor 150 may be configured to sense the pressure applied to different parts of a battery cell, distinguishing between the pressures applied to each part of the battery cell. For this purpose, the pressure sensor 150 may include pressure sensors 150A and 150B that are arranged together on the same mounting base 110. In this case, the pressure sensors 150A and 150B arranged together on the same mounting base 110 may be configured to sense the pressure applied to different parts of the battery cell mounted on the mounting base 110.

[0061] Figure 5 shows an enlarged view of section E1 in Figure 4.

[0062] As shown in Figure 5, a pressure sensor 150 of a battery cell pressurizing device 100 according to one embodiment of the present invention may be configured such that its resistance changes in response to the pressure applied to the pressure sensor 150. In this case, the pressure sensor 150 may include an insulating film-like substrate 152, conductive patterns 154a and 154b formed on the substrate 152 at intervals from each other, and terminals 156a and 156b for the electrical connection of the conductive patterns 154a and 154b.

[0063] In another embodiment, the pressure sensor 150 may be configured such that a voltage or current value changes in response to pressure applied to the pressure sensor 150. In this case, the pressure sensor 150 may include an insulating film-like substrate, piezoelectric elements disposed on such substrate, and terminals for electrical connections between the piezoelectric elements.

[0064] Figure 6 shows a buffer pad 160 for a battery cell pressurizing device according to one embodiment of the present invention.

[0065] As shown in Figure 6, a battery cell pressurizing device 100 according to one embodiment of the present invention may include a cushioning pad 160. In this case, the cushioning pad 160 may be fitted into a mounting groove 112 of a mounting base 110 and positioned inside the mounting groove 112. That is, the cushioning pad 160 may be positioned between the inner surface of the mounting groove 112 and a battery cell mounted in the mounting groove 112 to relieve the pressure applied to the mounted battery cell. In this case, the pressure sensor 150 may be positioned between the inner surface of the mounting groove 112 and the cushioning pad 160.

[0066] In one embodiment, the cushioning pad 160 may include a main body portion 162 disposed inside the mounting groove 112 to support the battery cell 20, and an extended portion 164 extending from the main body portion 162 and disposed inside the connection groove 114 of the mounting base 110. In this case, the extended portion 164 may be configured to cover one end of the pressure sensor 150 disposed inside the connection groove 114.

[0067] Furthermore, the cushioning pad 160 may further include a support portion 166. The support portion 166 may be configured to support the battery cell 20 by protruding from one side of the main body portion 162 facing the battery cell 20 toward the battery cell 20. Such a support portion 166 is provided at a position corresponding to the pressure sensor 150, allowing the pressure sensor 150 to easily sense the pressure applied to the battery cell 20.

[0068] Such a cushioning pad 160 may be made from a material having a predetermined elasticity. For example, the cushioning pad 160 may be made from a material containing a polymer resin such as urethane.

[0069] Figure 7 shows a stopper 170 for a battery cell pressurizing device according to one embodiment of the present invention.

[0070] As shown in Figure 7, a battery cell pressurizing device 100 according to one embodiment of the present invention may include a stopper 170. In this case, the stopper 170 is interposed between adjacent mounting bases 110A and 110B of the plurality of mounting bases of the battery cell pressurizing device 100, and is configured to limit the distance between the adjacent mounting bases 110A and 110B.

[0071] In one embodiment, the stopper 170 may have a plate structure, and the center of the plate structure may be provided with a through hole 172 in which a battery cell 20 mounted on one of the adjacent mounting bases 110A, 110B, is located.

[0072] According to the present invention, when the thickness of the battery cell to be pressurized is changed, the pressure applied to the battery cell to be pressurized can be appropriately adjusted by changing the thickness and number of stoppers 170 placed between the mounting bases.

[0073] Figure 8 shows a flowchart illustrating the process for detecting abnormal battery cells in a battery cell pressurizing device according to one embodiment of the present invention.

[0074] As shown in Figure 8, once the assembled battery cells are mounted on the multiple mounting bases 110 described above, the pressurizing unit 120 of the battery cell pressurizing device 100 pressurizes the multiple mounting bases 110 in a direction that brings them into close contact with each other, thereby pressurizing the battery cells mounted on the multiple mounting bases 110 within a predetermined reference time (S810).

[0075] While the battery cells are pressurized, the multiple pressure sensors 150, which are distributed across the multiple mounting bases 110, sense the pressure applied to each battery cell mounted on each mounting base 110 separately, or sense the pressure applied to each battery cell separately, depending on the different parts of each battery cell (S820).

[0076] Then, the control unit 130 of the battery cell pressurizing device 100 uses the pressure sensing result from the pressure sensor to detect an abnormal battery cell among the battery cells mounted on the multiple mounting bases 110 that has been subjected to a pressure that does not meet predetermined pressure conditions (S830).

[0077] For example, the control unit 130 can detect as abnormal battery cells any battery cells in which the applied pressure falls outside a predetermined first pressure range, or any battery cells in which the pressure is applied unevenly overall.

[0078] If an abnormal battery cell is detected in this manner, the control unit 130 can control the pressurizing unit 120 to stop its operation (S840).

[0079] Furthermore, the control unit 130 may control the output unit 140 to output identification information that identifies the mounting base on which the abnormal battery cell is installed, as a visual signal, an auditory signal, or an audiovisual signal (S850). In this case, the output unit 140 may output the identification information together with a predetermined alarm signal.

[0080] In response to this, if no abnormal battery cell is detected among the pressurized battery cells, the control unit 130 may repeatedly perform the above-described process (S820, S830) within a predetermined reference time (S832).

[0081] Figure 9 shows a block diagram of a battery cell manufacturing system 10 according to one embodiment of the present invention.

[0082] As shown in Figure 9, a battery cell manufacturing system 10 according to one embodiment of the present invention includes a battery cell pressurizing device 100 according to the present invention. Depending on the embodiment, the battery cell manufacturing system 10 may further include a current testing device 200 and / or a charge / discharge device 300.

[0083] The current testing device 200 may be configured to test the current of the battery cells while the assembled battery cells are pressurized by the battery cell pressurizing device 100 according to the present invention, and to detect defective battery cells among the battery cells.

[0084] The charging and discharging device 300 may be configured to repeatedly charge and discharge the assembled battery cell while the battery cell is pressurized by the battery cell pressurizing device 100 according to the present invention, thereby activating the battery cell.

[0085] Thus, the battery cell manufacturing system 10 according to the present invention can improve the manufacturing efficiency of battery cells and reduce manufacturing costs by integrating a short-circuit test process and an activation process for assembled battery cells.

[0086] As described above, according to the present invention, a plurality of pressure sensors are distributed across a plurality of mounting bases, each configured to mount at least one battery cell, and by sensing the pressure applied to the battery cell mounted on each mounting base in real time, it is possible to monitor the pressure applied to the battery cell in real time while saving the time and cost of the pressurization process for pressurizing the battery cell.

[0087] Furthermore, pressure sensors placed together on the same mounting base among the multiple mounting bases can sense the pressure applied to different parts of the battery cells mounted on the same mounting base. This allows for the detection of pressure variations not only between battery cells but also between different parts of a specific battery cell. As a result, the uniformity of the quality of the manufactured battery cells can be guaranteed, and the defect rate can be reduced.

[0088] Furthermore, the control unit uses the sensing results of the multiple pressure sensors to detect abnormal battery cells among those pressurized by the pressurizing unit that are subjected to pressure that does not meet predetermined pressure conditions, thereby enabling a quick response when an abnormal battery cell occurs.

[0089] Furthermore, it goes without saying that embodiments of the present invention can solve various other technical problems not only in the art field in question but also in the art fields related to the present invention, excluding those mentioned herein.

[0090] The present invention has been described with reference to specific embodiments. However, those skilled in the art will clearly understand that various modified embodiments can be realized within the technical scope of the present invention. Therefore, the embodiments disclosed herein should be considered from an explanatory rather than restrictive perspective. That is, the true technical scope of the present invention is shown in the claims, and any differences within an equivalent scope should be interpreted as being included in the present invention. [Explanation of symbols]

[0091] 10 Battery cell manufacturing system 100 Battery Cell Pressurization Device 110 mounting base 112 mounting groove 114 connecting grooves 120 pressurized units 130 Control Unit 140 Output section 150 pressure-sensitive sensors 160 cushioning pads 170 Stopper

Claims

1. Multiple mounting bases, each configured to hold at least one battery cell and arranged in a unidirectional line, A pressurizing unit configured to pressurize the battery cells mounted on the plurality of mounting bases by applying pressure to the plurality of mounting bases in a direction that brings them into close contact with each other, Multiple pressure sensors are distributed across the aforementioned mounting bases and configured to sense the pressure applied to each battery cell mounted on each mounting base separately, or to sense the pressure applied to each battery cell separately, based on different parts of each battery cell. A battery cell pressurizing device, including one.

2. The battery cell pressurizing device according to claim 1, wherein each of the mounting bases is provided with a mounting groove on which the battery cell is mounted.

3. The battery cell pressurizing device according to claim 2, wherein each of the plurality of pressure sensors is located inside the mounting groove of the corresponding mounting base among the plurality of mounting bases.

4. The battery cell pressurizing device according to claim 3, wherein each of the pressure-sensitive sensors is positioned between the inner surface of the mounting groove and the battery cell mounted in the mounting groove, and has a strap shape extending along the inner surface of the mounting groove.

5. The battery cell pressurizing device according to claim 2, further comprising a cushioning pad disposed between the inner surface of the mounting groove and the battery cell mounted in the mounting groove to alleviate the pressure applied to the mounted battery cell.

6. The plurality of pressure sensors include the pressure sensors that are arranged together on the same mounting base, The battery cell pressurization device according to claim 1, wherein the pressure sensors, which are arranged together on the same mounting base, are configured to sense the pressure applied to different parts of the battery cells mounted on the same mounting base.

7. The plurality of mounting bases include a first mounting base and a second mounting base arranged adjacent to each other, The first mounting base is, A mounting section to which the first battery cell is attached, A pressurizing unit is configured to pressurize the second battery cell mounted on the second mounting base by the pressure applied by the pressurizing unit, A battery cell pressurizing device according to claim 1, including the following:

8. The battery cell pressurizing device according to claim 1, further comprising a stopper interposed between adjacent mounting bases among the plurality of mounting bases to limit the distance between adjacent mounting bases.

9. The battery cell pressurizing device according to claim 8, wherein the stopper has a plate structure, and the plate structure has a through hole in the center of the plate structure in which a battery cell mounted on one of the adjacent mounting bases is located.

10. The battery cell pressurization device according to claim 1, further comprising a control unit configured to detect an abnormal battery cell among the battery cells to which a pressure not meeting predetermined pressure conditions has been applied, using the sensing results of the plurality of pressure sensors.

11. The battery cell pressurizing device according to claim 10, wherein the control unit is configured to stop the operation of the pressurizing unit if an abnormal battery cell is detected.

12. The battery cell pressurization device according to claim 10, further comprising an output unit that outputs identification information to identify the mounting unit on which the abnormal battery cell is mounted among the plurality of mounting units when the control unit detects the abnormal battery cell.

13. A battery cell manufacturing system comprising a battery cell pressurizing device according to any one of claims 1 to 12.

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