Battery device manufacturing system

Abstract

The invention discloses a battery device manufacturing system. In some embodiments, a battery device manufacturing system includes: a plurality of first manufacturing lines configured to manufacture a plurality of battery cells and a cell assembly in which the plurality of battery cells are stacked; a plurality of second manufacturing lines configured to couple the bus bar assembly to the cell assembly to manufacture the sub-battery module; and a plurality of third manufacturing lines configured to couple the sub-battery modules to the case to manufacture the battery module, in which one of the plurality of third manufacturing lines is configured to receive the sub-battery modules from each of two of the plurality of second manufacturing lines.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to and the benefit of Korean Patent Application No. 10-2023-0076345, filed on June 14, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] Various embodiments of the present disclosure are generally directed to a battery device manufacturing system. Background Art

[0004] Unlike primary batteries, secondary batteries can be charged and discharged and can be applied to devices in various fields, such as digital cameras, mobile phones, laptops, hybrid vehicles, electric vehicles, and energy storage systems (ESS). Secondary batteries can include lithium-ion batteries, nickel-cadmium batteries, nickel-metal hydride batteries, or nickel-hydrogen batteries.

[0005] Secondary batteries are manufactured as flexible pouch-type battery cells or rigid prismatic or cylindrical can-type battery cells. Multiple battery cells may be formed into a stacked cell assembly.

[0006] The stacked battery cell assembly may be placed within a housing to form a battery module, and multiple battery modules may be placed within a battery pack housing to form a battery pack. Summary of the invention

[0007] For mass production of battery devices (e.g., battery modules or battery packs), the battery device manufacturing system may include multiple manufacturing lines. For example, the battery device manufacturing system may include multiple manufacturing lines arranged in a logistics structure (e.g., in-line), which flow in one direction from the input of basic components to the discharge of the final battery module. However, when manufacturing a battery module including multiple (e.g., two) sub-battery modules, the space utilization of the in-line battery device may be reduced. In addition, in an in-line battery device manufacturing system, the movement of workers may increase, and it may not be easy to produce various models of products at the same time. In addition, in an in-line battery device manufacturing system, if some manufacturing devices fail, the work may stop as a whole, resulting in low production efficiency.

[0008] The present disclosure may be implemented in some embodiments to provide a battery device manufacturing system capable of improving space utilization and worker movement efficiency.

[0009] The present disclosure may be implemented in some embodiments to provide a battery device manufacturing system capable of simultaneously producing various models of products without replacing workers to improve production efficiency.

[0010] The present disclosure may be implemented in some embodiments to provide a battery device manufacturing system capable of manufacturing battery devices through various paths to improve production efficiency when some manufacturing lines fail.

[0011] The battery device manufactured by the battery device manufacturing system of the present disclosure can be widely used in the field of green technology, such as electric vehicles, battery charging stations, solar power generation and wind power generation using batteries, etc. In addition, the battery device manufactured by the battery device manufacturing system of the present disclosure can be used in environmentally friendly electric vehicles, hybrid vehicles, etc., to prevent climate change by suppressing air pollution and greenhouse gas emissions.

[0012] In some embodiments of the present disclosure, a battery device manufacturing system includes: multiple first manufacturing lines configured to manufacture multiple battery cells and cell assemblies stacking multiple battery cells; multiple second manufacturing lines configured to connect bus bar assemblies to cell assemblies to manufacture sub-battery modules; and multiple third manufacturing lines configured to connect sub-battery modules to housings to manufacture battery modules, wherein one of the multiple third manufacturing lines is configured to receive sub-battery modules from each of two second manufacturing lines among the multiple second manufacturing lines.

[0013] The battery device manufacturing system may further include: a first conveying device configured to convey the battery cell assemblies from the plurality of first manufacturing lines to the plurality of second manufacturing lines; and a second conveying device configured to convey the sub-battery modules from the plurality of second manufacturing lines to the plurality of third manufacturing lines.

[0014] The multiple first manufacturing lines may include at least one first battery cell assembly manufacturing line configured to manufacture a first battery cell assembly, and at least one second battery cell assembly manufacturing line configured to manufacture a second battery cell assembly different from the first battery cell assembly, the multiple second manufacturing lines may include at least one first sub-battery module manufacturing line configured to manufacture a first sub-battery module, and at least one second sub-battery module manufacturing line configured to manufacture a second sub-battery module different from the first sub-battery module, and the multiple third manufacturing lines may include at least one first battery device manufacturing line configured to manufacture a first battery device, and at least one second battery device manufacturing line configured to manufacture a second battery device different from the first battery device.

[0015] The first conveying device may include a 1-1 conveying device configured to convey a first battery cell assembly from at least one first battery cell assembly manufacturing line to at least one first sub-battery module manufacturing line, and a 1-2 conveying device configured to convey a second battery cell assembly from at least one second battery cell assembly manufacturing line to at least one second sub-battery module manufacturing line.

[0016] The second conveying device may include a 2-1 conveying device configured to convey a first sub-battery module from at least one first sub-battery module manufacturing line to at least one first battery device manufacturing line, and a 2-2 conveying device configured to convey a second sub-battery module from at least one second sub-battery module manufacturing line to at least one second battery device manufacturing line.

[0017] The first conveyor and the second conveyor may include at least one of an overhead conveyor belt or an autonomous vehicle.

[0018] At least a portion of the first conveyor may be located between the plurality of first manufacturing lines and the plurality of second manufacturing lines and between the plurality of first manufacturing lines and the plurality of third manufacturing lines.

[0019] At least a portion of the second conveyor may be located between the second plurality of manufacturing lines and the third plurality of manufacturing lines.

[0020] The plurality of first manufacturing lines may be arranged along a first direction, the plurality of second manufacturing lines may be arranged along a second direction, the plurality of third manufacturing lines may be arranged along a third direction, and the third direction may be different from the first direction or the second direction.

[0021] The second direction may be parallel to the first direction, and the third direction may be perpendicular to the first direction and the second direction.

[0022] Each of the plurality of first manufacturing lines may include at least one of a device for measuring the insulation resistance of a plurality of battery cells, a device for measuring the open circuit voltage of a plurality of battery cells, a device for cutting and bending electrode leads of battery cells, a cell assembly stacking device, a thermal insulation layer attaching device, and an adhesive member attaching device.

[0023] Each of the plurality of second manufacturing lines may include at least one of a welding device for coupling a cell assembly to a bus bar assembly, a welding inspection device, a sensing module assembly device, an insulation cover assembly device, and an end plate coupling device.

[0024] Each of the multiple third manufacturing lines may include a lower shell supply device, an adhesive applying device for applying adhesive to the lower shell, a sub-battery module assembling device for connecting the sub-battery module to the lower shell, an upper shell connecting device, a sensing module connecting device, a safety cover connecting device, a device for checking the weight of the battery device, a device for checking the size of the battery device, and at least one of a device for charging and discharging the battery device.

[0025] Each of two of the plurality of second manufacturing lines may be configured to transfer the sub-battery module to one of the plurality of third manufacturing lines.

[0026] One of the plurality of second manufacturing lines may be configured to receive battery cell assemblies from each of two first manufacturing lines of the plurality of first manufacturing lines.

[0027] In some embodiments of the present disclosure, a battery device manufacturing system includes: multiple first manufacturing lines configured to manufacture multiple battery cells and cell assemblies stacking multiple battery cells; multiple second manufacturing lines configured to connect bus bar assemblies to cell assemblies to manufacture sub-battery modules; and multiple third manufacturing lines configured to connect sub-battery modules to a housing to manufacture battery modules, wherein the number of the multiple second manufacturing lines is less than the number of the multiple first manufacturing lines, and the number of the multiple third manufacturing lines is less than the number of the multiple second manufacturing lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following detailed description, which refers to the accompanying drawings, describes certain aspects, features, and advantages of embodiments of the present disclosure.

[0029] Figure 1 is a schematic diagram of a battery device manufacturing system according to an embodiment of the present disclosure;

[0030] Figure 2 is a three-dimensional diagram of a battery cell according to an embodiment of the present disclosure;

[0031] Figure 3 is an exploded perspective view of a battery cell assembly according to an embodiment of the present disclosure;

[0032] Figure 4 is a diagram illustrating assembly of a sub-battery module according to an embodiment of the present disclosure; and

[0033] Figure 5A and Figure 5B is a diagram illustrating an assembling process of a battery device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] Embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, this description is illustrative, and the present disclosure may not be limited to the specific embodiments described by way of example.

[0035] The terms and words used in this specification and claims to be described below should not be construed as being limited to common or dictionary terms, but should be interpreted in accordance with the technical concepts of the present disclosure, based on the principle that inventors can appropriately define their own inventions with their own terms in order to best describe the present invention.

[0036] Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely embodiments of the present disclosure and are not intended to represent all possible variations of the embodiments of the technical concepts of the present disclosure. Therefore, it should be understood that various equivalent forms and modified forms can be used to replace in the embodiments.

[0037] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In this case, in the accompanying drawings, the same components are represented by the same reference numerals as much as possible. In addition, detailed descriptions of well-known functions and structures that may obscure the main points of the present disclosure will be omitted. Certain elements in the accompanying drawings are enlarged, omitted or schematically illustrated, and the size of each element does not fully reflect its actual size.

[0038] Figure 1 is a schematic diagram of a battery device manufacturing system according to an embodiment of the present disclosure.

[0039] Reference Figure 1 The battery device manufacturing system 100 may utilize multiple manufacturing lines to manufacture battery devices. For example, the battery device manufacturing system 100 may include a battery cell (e.g., Figure 2 The battery cell 200) and / or cell assembly (e.g., Figure 3 The first manufacturing line 110 for manufacturing the battery cell assembly 300 in the embodiment of the present invention is used to manufacture the sub-battery module (for example, Figure 4 and a second manufacturing line 120 for manufacturing a battery device (eg, Figure 5B According to an embodiment, the battery device manufacturing system 100 may be a system for manufacturing a battery device (e.g., a battery module or a battery pack). For example, the battery device manufacturing system 100 may be a device, a facility, or a factory including a manufacturing line where a plurality of manufacturing devices are located. According to an embodiment, the manufacturing lines 110, 120, and 130 may be devices or facilities including a plurality of manufacturing devices.

[0040] According to an embodiment, the battery device manufacturing system 100 may have an arrangement structure that improves space utilization. For example, the battery device manufacturing system 100 may include a first manufacturing line 110, a second manufacturing line 120, and a third manufacturing line 130 arranged in a decoupled manner. The decoupled manner refers to an arrangement in which the first manufacturing line 110, the second manufacturing line 120, and the third manufacturing line 130 are grouped and arranged in different directions from each other. For example, the first manufacturing line 110, the second manufacturing line 120, and the third manufacturing line 130 may be arranged at intervals from each other.

[0041] According to an embodiment, a plurality of first manufacturing lines 110 may be arranged along a first direction. A plurality of second manufacturing lines 120 may be arranged along a second direction. A plurality of third manufacturing lines 130 may be arranged along a third direction. In an embodiment, the third direction may be different from the first direction or the second direction. In an embodiment, the manufacturing lines 110, 120, and 130 may not be arranged in a straight line. For example, the manufacturing lines 110, 120, and 130 may not all be arranged in the same direction.

[0042] According to an embodiment, the first direction and the second direction may be arranged substantially in parallel, and the third direction may be arranged substantially perpendicular to the first direction and the second direction. For example, a plurality of first manufacturing lines 110 and a plurality of second manufacturing lines 120 may be arranged along a first direction (e.g., Y' direction), and a plurality of third manufacturing lines 130 may be arranged along a second direction (e.g., X' direction). By arranging the manufacturing lines 110, 120, and 130 in a decoupled manner, the construction cost of the battery device manufacturing system 100 may be reduced, and the movement of workers may be optimized.

[0043] According to an embodiment, the battery device manufacturing system 100 can simultaneously produce various products. For example, the battery device manufacturing system 100 can manufacture battery cells with different performances and structures (e.g., Figure 2 The battery cell 200 in the embodiment of the present invention), the battery cell assembly (for example, Figure 3 The cell assembly 300 in the embodiment of the present invention) and the sub-battery module (e.g., Figure 4 The sub-battery module 400 in the embodiment of the present invention) and / or the battery device (e.g., Figure 5B 500 in the battery device).

[0044] According to an embodiment, the first manufacturing line 110 may include a plurality of first cell assembly manufacturing lines 111 for producing first cell assemblies and a plurality of second cell assembly manufacturing lines 112 for producing second cell assemblies different from the first cell assemblies.

[0045] According to an embodiment, the second manufacturing line 120 may include a plurality of first sub-battery module manufacturing lines 121 for producing first sub-battery modules and a plurality of second sub-battery module manufacturing lines 122 for producing second sub-battery modules different from the first sub-battery modules.

[0046] According to an embodiment, the third manufacturing line 130 may include at least one first battery device manufacturing line 131 for producing a first battery device and at least one second battery device manufacturing line 132 for producing a second battery device different from the first battery device.

[0047] According to an embodiment, the battery device manufacturing system 100 may include conveying devices 140 and 150 for moving manufactured products (e.g., battery cell assemblies 300 or sub-battery modules 400). For example, the battery device manufacturing system 100 may include a first conveying device 140 for moving the battery cell assemblies 300 manufactured by the first manufacturing line 110 to the second manufacturing line 120 and a second conveying device 150 for moving the sub-battery modules 400 manufactured by the second manufacturing line 120 to the third manufacturing line 130.

[0048] According to an embodiment, the conveyors 140 and 150 may include a drive structure for moving the manufactured products. For example, the conveyors 140 and 150 may include at least one of an overhead conveyor (OHCV) or an automatic guided vehicle (AGV) (ie, an autonomous vehicle).

[0049] According to an embodiment, the first transfer device 140 may transfer the plurality of battery cell assemblies 300 manufactured in the plurality of first manufacturing lines 110 to the plurality of second manufacturing lines 120 .

[0050] According to an embodiment, the number of the first conveyor 140 may be designed based on the type of the battery cell assemblies 300 produced in the plurality of first manufacturing lines 110. For example, the first conveyor 140 may include a 1-1 conveyor 141 configured to convey the first battery cell assembly manufactured by the first battery cell assembly manufacturing line 111 to the first sub-battery module manufacturing line 121, and a 1-2 conveyor 142 configured to convey the second battery cell assembly manufactured by the second battery cell assembly manufacturing line 112 to the second sub-battery module manufacturing line 122. In an embodiment, the 1-1 conveyor 141 may be arranged substantially parallel to the 1-2 conveyor 142. According to an embodiment, at least a portion of the first conveyor 140 may be located between the first manufacturing line 110 and the second manufacturing line 120 and between the first manufacturing line 110 and the third manufacturing line 130. The first conveyor 140 may be located between the exit of the first manufacturing line 110 and the entrance of the second manufacturing line 120.

[0051] According to an embodiment, the number of the second conveying devices 150 may be designed based on the types of the sub-battery modules 400 produced in the plurality of second manufacturing lines 120. For example, the second conveying devices 150 may include a 2-1 conveying device 151 configured to convey the first sub-battery modules manufactured by the second sub-battery module manufacturing line 121 to the first battery device manufacturing line 131, and a 2-2 conveying device 152 configured to convey the second sub-battery modules manufactured by the second sub-battery module manufacturing line 122 to the second battery device manufacturing line 132.

[0052] In an embodiment, at least a portion of the 2-1 conveyor 151 may be arranged substantially parallel to at least a portion of the 2-2 conveyor 152. According to an embodiment, at least a portion of the second conveyor 150 may be located between the second manufacturing line 120 and the third manufacturing line 130. The second conveyor 150 may be located between an exit of the second manufacturing line 120 and an entrance of the third manufacturing line 130.

[0053] According to an embodiment, the battery device manufacturing system 100 may have a structure that minimizes the reduction in overall manufacturing efficiency even when at least one of the plurality of manufacturing lines 110, 120, and 130 fails. For example, the objects (e.g., Figure 3 The battery cell assembly 300 in the embodiment of the present invention can be transferred to the second manufacturing line 120 by a first conveying device 140. The objects (for example, Figure 4 The sub-battery module 400 in the embodiment may be transferred to the third manufacturing line 130 using the second transfer device 150 .

[0054] According to an embodiment, a plurality of first manufacturing lines 110 may share a first conveyor 140. For example, a plurality of cell assembly manufacturing lines 111 and 112 for manufacturing the same type (model or kind) of cell assemblies may use the same first conveyor 141 and 142, respectively. One 1-1 conveyor 141 may convey the first cell assemblies manufactured by the plurality of first cell assembly manufacturing lines 111 to the plurality of first sub-battery module manufacturing lines 121, respectively. In an embodiment, if some of the plurality of first cell assembly manufacturing lines 111 fail (e.g., stop operating), the 1-1 conveyor 141 may convey the first cell assemblies manufactured by other first cell assembly manufacturing lines (e.g., the first cell assembly manufacturing line 111 that has not failed) of the plurality of first cell assembly manufacturing lines 111 to the first sub-battery module manufacturing line 121. For example, the cell assembly 300 manufactured by the first cell assembly manufacturing line 111 may be conveyed to the first sub-battery module manufacturing line 121 through the first path P1 provided by the 1-1 conveyor 141.

[0055] The description of the 1-1 conveyor 141 can be applied to the 1-2 conveyor 142. For example, the cell assembly 300 manufactured by the second cell assembly manufacturing line 112 can be transferred to the second sub-battery module manufacturing line 122 through the second path P2 provided by the 1-2 conveyor 142. Since multiple first manufacturing lines 110 share one first conveyor 140, the manufacturing efficiency of the battery device manufacturing system 100 can be improved.

[0056] According to an embodiment, a plurality of second manufacturing lines 120 may share a second conveyor 150. A plurality of sub-battery module manufacturing lines 121 and 122 for manufacturing sub-modules of the same type (model or kind) may use the same second conveyor 151 and 152, respectively. For example, one 2-1 conveyor 151 may convey the first sub-battery modules manufactured by a plurality of first sub-battery module manufacturing lines 121 to at least one first battery device manufacturing line 131, respectively. In an embodiment, if some of the plurality of first sub-battery module manufacturing lines 121 fail (e.g., stop operating), the 2-1 conveyor 151 may convey the first sub-battery modules manufactured by other first sub-battery module manufacturing lines 121 in the plurality of first sub-battery module manufacturing lines 121 to the first battery device manufacturing line 131. For example, the sub-battery module 400 manufactured by the first sub-battery module manufacturing line 121 may be conveyed to the first battery device manufacturing line 131 through the third path P3 provided by the 2-1 conveyor 151.

[0057] The description of the 2-1 conveyor 151 may be applied to the 2-2 conveyor 152. For example, the sub-battery module 400 manufactured by the second sub-battery module manufacturing line 122 may be transferred to the second battery device manufacturing line 132 through the fourth path P4 provided by the 2-2 conveyor 152.

[0058] Since the plurality of second manufacturing lines 120 share one second conveying device 150 , the manufacturing efficiency of the battery device manufacturing system 100 may be improved.

[0059] According to an embodiment, one battery device 500 may include two sub-battery modules 400. One third manufacturing line 130 may receive the sub-battery module 400 from each of the two second manufacturing lines 120. Since one third manufacturing line 130 receives the sub-battery module 400 from each of the two second manufacturing lines 120, the production efficiency of the battery device 500 may be improved.

[0060] According to an embodiment, the first manufacturing line 110 may include a plurality of manufacturing devices for processing battery cells (eg, Figure 2 200) and / or manufacturing cell components (e.g., Figure 3 For example, the first manufacturing line 110 may include a device for measuring the insulation resistance (IR) and the open circuit voltage (OCV) of the battery cell 200, a device for cutting and bending the electrode leads (e.g., Figure 2The first manufacturing line 110 may include at least one of a device for attaching an electrode lead 230 in the battery cell 200, a device for attaching a heat insulating layer (e.g., a mica sheet and / or a heat insulating pad), and / or a stacking device for stacking a plurality of battery cells 200. The first manufacturing line 110 may include known devices for manufacturing the battery cells 200 and / or the cell assembly 300. For example, a device for measuring the insulation resistance (IR) and open circuit voltage (OCV) of the battery cell 200, a device for cutting and bending the electrode lead (e.g., Figure 2 The first manufacturing line 110 may include a device for attaching an electrode lead 230 in the first manufacturing line 110, a device for attaching a heat insulating layer (e.g., a mica sheet and / or a heat insulating pad), and / or a stacking device for stacking a plurality of battery cells 200, which may be known devices for manufacturing the battery cells 200 and / or the cell assembly 300. However, this is only an example, and the first manufacturing line 110 may further include a device for processing the battery cells 200 and manufacturing the cell assembly 300. For example, the first manufacturing line 110 may further include a hot melt adhesive coating device.

[0061] According to an embodiment, the second manufacturing line 120 may include a circuit for manufacturing sub-battery modules (eg, Figure 4 The second manufacturing line 120 may include a plurality of manufacturing devices for manufacturing the sub-battery module 400. For example, the second manufacturing line 120 may include a stacking inspection device for the battery cell assembly 300, a welding device for connecting the battery cell assembly 300 to the bus bar assembly, a welding inspection device, a sensing module assembly device, an insulation cover assembly device, and / or an end plate connection device. The second manufacturing line 120 may include known devices for manufacturing the sub-battery module 400. For example, the stacking inspection device is a device for checking the alignment of multiple battery cells in the battery cell assembly 300. The welding device is a device for connecting the battery cell assembly 300 to the bus bar assembly. Figure 4 The welding inspection device is a device for inspecting the battery cell assembly 300 and the bus bar assembly 410. The sensing module assembly device is a device for Figure 4 The sensing module assembly 420 in the embodiment is assembled to the bus bar assembly 410. The insulating cover assembly device is an apparatus for assembling the insulating cover 430 to the Figure 4 The end plate coupling device is a device for coupling the end plate 440 to the side plate 330 and / or the insulation cover 430. However, this is only an example, and the second manufacturing line 120 may further include a device for manufacturing the sub-battery module 400.

[0062] According to an embodiment, the third manufacturing line 130 may include a device for manufacturing a battery device (eg, Figure 5BThe third manufacturing line 130 may include a plurality of manufacturing devices for manufacturing the battery device 500). For example, the third manufacturing line 130 may include an adhesive coating device for coating an adhesive to the lower housing, a sub-battery module assembly device for coupling the sub-battery module 400 to the lower module housing, and / or a housing assembly device for coupling at least one of the upper housing or the side housing to the sub-battery module. The third manufacturing line 130 may include known devices for manufacturing the battery device 500. For example, the adhesive coating device is a device for coupling the sub-battery module 400 to the lower module housing. Figure 5A The adhesive 520 is applied to Figure 5B The sub-battery module assembly device is a device for connecting the sub-battery module 400 to the lower housing 510. The housing assembly device is a device for connecting the sub-battery module 400 to the lower housing 510. Figure 5A The upper housing 530 in the battery module 400 is connected to the upper housing 530. The sub-battery module assembly device and / or the housing assembly device may refer to a welding device (e.g., a laser welding device) and / or a screw assembly device. However, this is only an example, and the third manufacturing line 130 may further include a device for manufacturing the battery device 500. For example, the third manufacturing line 130 may further include a charging and discharging device for the battery device 500, a device for measuring the insulation resistance (IR) and open circuit voltage (OCV) of the battery device 500, a device for checking the weight and / or size of the battery device 500, a safety cover assembly device and / or a labeling device. However, this is only an example, and the third manufacturing line 130 may further include a device for manufacturing the battery device 500.

[0063] Figure 2 is a perspective view of a battery cell according to an embodiment of the present disclosure.

[0064] Reference Figure 2 , the battery cell 200 may include a bag 210, an electrode assembly 220, and an electrode lead 230. The battery cell 200 may be a secondary battery. For example, the battery cell 200 may be a lithium-ion battery, but is not limited thereto. For example, the battery cell 200 may be a nickel-cadmium battery, a nickel-metal hydride battery, or a nickel-hydrogen battery that can be charged and discharged.

[0065] The pouch 210 may form at least a portion of the exterior of the battery cell 200. The pouch 210 may include an electrode receiving portion 211 receiving the electrode assembly 220 and a sealing portion 215 sealing at least a portion of the periphery of the electrode receiving portion 211. The electrode receiving portion 211 may provide a space for receiving the electrode assembly 220 and an electrolyte.

[0066] The sealing portion 215 may be formed by bonding at least a portion of the periphery of the bag 210. The sealing portion 215 may be formed in the form of a flange extending outward from the electrode receiving portion 211 formed in a container shape, and may be arranged along at least a portion of the outer portion of the electrode receiving portion 211. In an embodiment, the sealing portion 215 may include a first sealing portion 215a where the electrode lead 230 is located and a second sealing portion 215b without the electrode lead 230. A portion of the electrode lead 230 may protrude or be exposed outside the bag 210. In order to improve the sealing degree of the first sealing portion 215a and ensure that the position where the electrode lead 230 protrudes outside the bag 210 is in an electrically insulating state, the electrode lead 230 may be covered by an insulating film 240. The insulating film 240 may be formed of a thin film material thinner than the electrode lead 230 and may be attached to both sides of the electrode lead 230.

[0067] In an embodiment, the electrode leads 230 may be arranged on both sides of the battery cell 200 along the longitudinal direction (Y-axis direction) and facing opposite directions. For example, the electrode leads 230 may include a positive electrode lead 230a having a first polarity (e.g., a positive electrode) and a negative electrode lead 230b having a second polarity (e.g., a negative electrode), and the positive electrode lead 230a faces the longitudinal direction (e.g., Y-axis direction) of the battery cell 200. Figure 2 The negative electrode lead 230b faces the other side of the longitudinal direction of the battery cell 200. Figure 1 In the illustrated embodiment, the sealing portion 215 may include two first sealing portions 215 a provided with the electrode lead 230 and one second sealing portion 215 b not provided with the electrode lead 230 .

[0068] The direction of the electrode lead 230 can be selectively designed. Figure 2 ), the electrode lead 230 may include a positive electrode lead 230a and a negative electrode lead 230b, and the negative electrode lead 230b is located in the opposite direction of the positive electrode lead 230a relative to the electrode assembly 220. Figure 2 , the electrode leads 230 are shown as being arranged to face opposite directions on both sides of the longitudinal direction (e.g., the Y-axis direction) of the battery cell 200, but the structure of the electrode leads 230 is not limited thereto. For example, the two electrode leads 230 may be arranged substantially parallel in the longitudinal direction (e.g., the Y-axis direction) of the battery cell 200.

[0069] In addition, the bag 210 is not limited to Figure 2 The structure shown is a structure in which the sealing portion 215 is formed on three sides by folding a single piece of the housing.

[0070] In an embodiment, at least a portion of the sealing portion 215 may be formed to be folded at least once. By folding at least a portion of the sealing portion 215, the adhesive reliability of the sealing portion 215 may be improved, and the area of ​​the sealing portion 215 may be minimized. In the sealing portion 215 according to the embodiment, the second sealing portion 215b (in which the electrode lead 230 is not provided) may be folded twice and then fixed with the adhesive member 217. For example, the second sealing portion 215b may be folded 180° along the first bending line C1 and then folded along the second bending line C2. Here, the interior of the second sealing portion 215b may be filled with the adhesive member 217.

[0071] The angle at which the second sealing portion 215b is bent or the number of times the second sealing portion 215b is bent may be changed. For example, in an embodiment (not shown), the second sealing portion 215b may be folded 90° relative to the first sealing portion 215a.

[0072] The electrode assembly 220 may include a cathode plate, an anode plate, and a separator. The separator may prevent contact between the cathode plate and the anode plate. It will be appreciated by those skilled in the art that the electrode assembly 220 may be manufactured using a variety of methods, such as stacking, jelly roll, or Z-folding.

[0073] In an embodiment, the manufacturing (eg, cutting and bending) of the battery cell 200 Figure 2 Inspection of the electrode leads 230 in the battery cell 200 (eg, insulation resistance (IR) measurement, open circuit voltage (OCV) measurement) may be performed using the first manufacturing line 110 .

[0074] Figure 3 is an exploded perspective view of a battery cell assembly according to an embodiment of the present disclosure.

[0075] Reference Figure 3 , the battery cell assembly 300 may include a plurality of battery cells 200. Figure 2 The description of the battery cell 200 may be applied to Figure 3 The battery cell 200 in the Figure 1 The first manufacturing line 110 manufactures Figure 3 The battery cell assembly 300.

[0076] According to an embodiment, the cell assembly 300 may include a plurality of stacked battery cells 200. In an embodiment, the stacking of the plurality of battery cells 200 may be performed by a stacking device of the first manufacturing line 110. For example, the first manufacturing line 110 may include a cell assembly stacking device.

[0077] According to an embodiment, the battery cell assembly 300 may include an insulation layer 310 disposed between at least some of the plurality of battery cells 200. The insulation layer 310 may reduce heat transfer between the battery cells 200. By adding one or more insulation layers 310, thermal runaway may be reduced or prevented. In an embodiment, the insulation layer 310 may include a mica sheet and / or an insulation pad. In an embodiment, the insulation layer 310 may be attached to the battery cell 200 by an insulation layer attachment device of the first manufacturing line 110. The insulation layer attachment device is a known device.

[0078] According to an embodiment, the battery cell assembly 300 may include an adhesive member 320. The adhesive member 320 may be disposed between the plurality of battery cells 200 and / or between the battery cell 200 and the insulation layer 310. The adhesive member 320 may fix the positions of the plurality of battery cells 200. The adhesive member 320 may be a tape or an adhesive, such as a hot melt adhesive. In an embodiment, the first manufacturing line 110 may include a manufacturing device for attaching or applying the adhesive member 320. The manufacturing device for attaching or applying the adhesive member is a known device.

[0079] According to an embodiment, the battery cell assembly 300 may include a side plate 330. The side plate 330 may be connected to the battery cells 200 located at both ends of the battery cell assembly 300. For example, the side plate 330 may be attached to the battery cell 200 using an adhesive tape 331. In an embodiment, the first manufacturing line 110 may include an attachment device for coupling the side plate 330. The attachment device is a known device.

[0080] According to an embodiment, the structure of the battery cell assembly 300 may be selectively designed. For example, the shape, voltage, and / or capacity of the battery cell assembly 300 may be selectively changed.

[0081] Figure 4 is a diagram showing the assembly of a sub-battery module according to an embodiment of the present disclosure. For example, Figure 4 is an exploded perspective view of the sub-battery module 400 .

[0082] Reference Figure 4 , the sub-battery module 400 may include a battery cell assembly 300. Figure 3 The description of the battery cell assembly 300 can be applied to Figure 4 The sub-battery module 400 in. Figure 4 The sub-battery module 400 in the Figure 1 The second manufacturing line 120 is manufactured in.

[0083] According to an embodiment, the sub-battery module 400 may include a bus bar assembly 410. The bus bar assembly 410 may be connected to the battery cell assembly 300. The bus bar assembly 410 may include a bus bar 411 connected to the electrode lead 230 of the battery cell assembly 300 and a bus bar frame 412 supporting the bus bar 411. The bus bar 411 may electrically connect the electrode lead 230 to the external components of the sub-battery module 400. The coupling of the bus bar assembly 410 to the battery cell assembly 300 may be performed by Figure 1 For example, the second manufacturing line 120 may include a welding device for welding the electrode lead 230 and the bus bar 411 of the battery cell assembly 300 and / or an alignment device for inserting the electrode lead 230 into a slit formed in the bus bar 411. The welding device is a known device.

[0084] According to an embodiment, the sub-battery module 400 may include a sensing module assembly 420. The sensing module assembly 420 may include a flexible printed circuit board (FPCB) 421, an upper cover 422 supporting the FPCB 421, and a connection portion 423 extending from the FPCB 421. The FPCB 421 may be electrically connected to an external device of the sub-battery module 400, and may transmit an electrical signal from the external device to the sub-battery module 400. The sensing module assembly 420 may be connected to the bus bar assembly 410. For example, the connection portion 423 may be welded to the bus bar assembly 410. The connection between the bus bar assembly 410 and the sensing module assembly 420 may be formed by Figure 1 The second manufacturing line 120 in the embodiment is performed. For example, the second manufacturing line 120 may include a sensing module assembly device for stacking and / or welding the bus bar assembly 410 and the sensing module assembly 420. The sensing module assembly device is a known device using welding.

[0085] According to an embodiment, the sub-battery module 400 may include an insulating cover 430 for covering at least a portion of the bus bar assembly 410. For example, only a portion of the bus bar assembly 410 (e.g., the terminal 413) may be exposed to the outside of the insulating cover 430. In an embodiment, the insulating cover 430 may be connected to (e.g., attached to) the bus bar assembly 410 and / or the side plate 330. The second manufacturing line 120 may include an insulating cover assembly device for assembling the insulating cover 430 to the bus bar assembly 410 and / or the side plate 330. The insulating cover assembly device is a known device for coupling the insulating cover 430 to the bus bar assembly 410 and / or the side plate 330 using welding and / or bolts.

[0086] According to an embodiment, the sub-battery module 400 may include an end plate 440. The end plate 440 may cover the insulating cover 430. The insulating cover 430 may be disposed between the bus bar assembly 410 and the end plate 440. According to an embodiment, the end plate 440 may form at least a portion of the exterior of the sub-battery module 400. According to an embodiment, the end plate 440 may be coupled to the side plate 330 and / or the insulating cover 430 using a coupling member (not shown) (e.g., a screw). The second manufacturing line 120 may include a coupling device for coupling the end plate 440 to the side plate 330 and / or the insulating cover 430. The coupling device is a known device for coupling the end plate 440 to the side plate 330 and / or the insulating cover 430 using welding and / or bolts.

[0087] As for the structure of the sub-battery module 400, at least some of the components of the sub-battery module 400 disclosed in this specification may not be included, and undisclosed components may be added to the sub-battery module 400. In addition, each of the bus bar assembly 410, the sensing module assembly 420, the insulating cover 430, and the end plate 440 disclosed in this specification is described as an example and may have different forms.

[0088] Figure 5A and Figure 5B is a diagram showing an assembly process of a battery device according to an embodiment of the present disclosure. For example, Figure 5A It is an exploded perspective view of the assembled battery device 500 . Figure 5B It is a perspective view of the battery device 500 .

[0089] Reference Figure 5A and 5B , the battery device 500 may include a plurality of sub-battery modules 400, for example, Figure 5A As shown, there are two sub-battery modules 400a and 400b. The battery device 500 can be a battery module or a battery pack. Figure 4 The description of the sub-battery module 400 in Figure 5A and Figure 5B The sub-battery module 400 in. Figure 5A and Figure 5B The battery device 500 can be used Figure 1 The third manufacturing line 130 is manufactured.

[0090] According to an embodiment, the battery device 500 may include a lower case 510 and an adhesive 520 applied to the lower case 510. The lower case 510 may have a structure to accommodate a plurality of (e.g., two) sub-battery modules 400. For example, the lower case 510 may include a first region 511 to which a first adhesive 521 is applied and a second region 512 to which a second adhesive 522 is applied and spaced apart from the first region 511. The lower case 510 may include a partition plate 513 located between the first region 511 and the second region 512. The partition plate 513 may be connected to the lower case 510 using a plurality of coupling members 514 (e.g., screws).

[0091] The adhesive 520 may be a thermal adhesive. The adhesive 520 may be bonded to the lower housing 510 by Figure 1 The third manufacturing line 130 in the embodiment of the present invention is performed. For example, the third manufacturing line 130 may include a lower shell supply device (not shown) and an adhesive coating device (not shown). The lower shell supply device may include a conveyor belt for conveying the lower shell 510.

[0092] According to an embodiment, the battery device 500 may include a plurality of (e.g., two) sub-battery modules 400a and 400b coupled to the lower housing 510. For example, the two sub-battery modules 400a and 400b may be disposed on the first adhesive 521 and the second adhesive 522, respectively. The partition plate 513 may be located between the two sub-battery modules 400. According to an embodiment, the sub-battery module 400 may be coupled to the lower housing 510. For example, the sub-battery module 400 may be connected to the lower housing 510 using a plurality of coupling members (e.g., screws). The coupling of the sub-battery module 400 to the lower housing 510 may be performed by Figure 1 The third manufacturing line 130 is performed in the embodiment of the present invention. For example, the third manufacturing line 130 may include a sub-battery module supply device (not shown) and a sub-battery module coupling device (not shown). The sub-battery module supply device may include a conveyor belt for conveying the sub-battery module 400. The sub-battery module coupling device may include a welding member and / or a coupling member.

[0093] According to an embodiment, the battery device 500 may include an upper case 530. For example, one upper case 530 may cover the tops of two sub-battery modules 400. According to an embodiment, the upper case 530 may be coupled to the side plate 330 and the end plate 440. The coupling of the sub-battery module 400 to the lower case 510 may be performed by Figure 1 The third manufacturing line 130 is performed in the embodiment of the present invention. For example, the third manufacturing line 130 may include an upper shell supply device (not shown) and an upper shell coupling device (not shown). The upper shell supply device may include a conveyor belt for conveying the upper shell 530.

[0094] According to an embodiment, the battery device 500 may include a sensing module (not shown) and / or a safety cover 550. In an embodiment, the sensing module may detect information of the battery device 500. The sensing module may be connected to the sensing module assembly 420. For example, the upper housing 530 may include an opening for accommodating the sensing module, and the sensing module may be coupled to the sensing module assembly 420 through the opening of the upper housing 530. The safety cover 550 may protect the terminal 413 of the bus bar assembly 410 from the outside of the battery device 500. For example, the safety cover 550 may cover the terminal 413. The number of safety covers 550 may be set to correspond to the number of terminals 413. The connection of the sensing module and / or the safety cover 550 may be determined by Figure 1 The third manufacturing line 130 is performed in the embodiment of the present invention. For example, the third manufacturing line 130 may include a sensing module supply device (not shown), a safety cover supply device (not shown), a sensing module coupling device (not shown), a safety cover coupling device (not shown) for coupling the safety cover 550 to the terminal 413, and / or a safety cover inspection device (not shown) for inspecting the safety cover 550. The sensing module supply device may include a conveyor belt for conveying the sensing module. The safety cover supply device may include a conveyor belt for conveying the safety cover 550.

[0095] The structure of the battery device 500 is optional and may not include at least some of the components of the battery device 500 disclosed in this specification. In addition, undisclosed components may also be added to the battery device 500. In addition, each of the lower case 510, adhesive 520, sub-battery module 400, upper case 530, and safety cover 550 disclosed in this specification is described as an example and may have different forms.

[0096] According to an embodiment of the present disclosure, a battery device manufacturing system may include a plurality of manufacturing lines. By arranging the plurality of manufacturing lines in a decoupled manner, space utilization efficiency and production efficiency may be improved, and various models of products may be produced simultaneously.

[0097] Only specific implementation examples of certain embodiments are described. The disclosed embodiments and other embodiments may be modified, improved, and enhanced based on the present disclosure. In addition, these embodiments may be combined to form additional embodiments.

Claims

1. A battery device manufacturing system, comprising: A plurality of first manufacturing lines for manufacturing a plurality of battery cells and stacking cell assemblies of the plurality of battery cells; a plurality of second manufacturing lines, coupling bus bar assemblies to the battery cell assemblies to manufacture sub-battery modules; as well as a plurality of third manufacturing lines, coupling the sub-battery modules to the housing to manufacture battery modules, wherein one of the plurality of third manufacturing lines receives the sub-battery module from each of two second manufacturing lines of the plurality of second manufacturing lines.

2. The battery device manufacturing system according to claim 1, further comprising: a first conveying device, for conveying the battery cell assembly from the plurality of first manufacturing lines to the plurality of second manufacturing lines; as well as The second conveying device conveys the sub-battery modules from the plurality of second manufacturing lines to the plurality of third manufacturing lines.

3. The battery device manufacturing system according to claim 2, wherein: The plurality of first manufacturing lines include at least one first battery cell assembly manufacturing line for manufacturing a first battery cell assembly, and at least one second battery cell assembly manufacturing line for manufacturing a second battery cell assembly different from the first battery cell assembly, The plurality of second manufacturing lines include at least one first sub-battery module manufacturing line that manufactures a first sub-battery module, and at least one second sub-battery module manufacturing line that manufactures a second sub-battery module different from the first sub-battery module, and The plurality of third manufacturing lines include at least one first battery device manufacturing line that manufactures a first battery device, and at least one second battery device manufacturing line that manufactures a second battery device different from the first battery device.

4. The battery device manufacturing system according to claim 3, wherein: The first conveying device includes a 1-1 conveying device for conveying the first battery cell assembly from the at least one first battery cell assembly manufacturing line to the at least one first sub-battery module manufacturing line, and a 1-2 conveying device for conveying the second battery cell assembly from the at least one second battery cell assembly manufacturing line to the at least one second sub-battery module manufacturing line.

5. The battery device manufacturing system according to claim 3, wherein: The second conveying device includes a 2-1 conveying device for conveying the first sub-battery module from the at least one first sub-battery module manufacturing line to the at least one first battery device manufacturing line, and a 2-2 conveying device for conveying the second sub-battery module from the at least one second sub-battery module manufacturing line to the at least one second battery device manufacturing line.

6. The battery device manufacturing system according to claim 2, wherein: The first conveying device and the second conveying device include at least one of an overhead conveyor belt or an autonomous vehicle.

7. The battery device manufacturing system according to claim 2, wherein: At least a portion of the first conveyor is located between the plurality of first manufacturing lines and the plurality of second manufacturing lines and between the plurality of first manufacturing lines and the plurality of third manufacturing lines.

8. The battery device manufacturing system according to claim 2, wherein: At least a portion of the second conveyor is located between the plurality of second manufacturing lines and the plurality of third manufacturing lines.

9. The battery device manufacturing system according to claim 1, wherein: The plurality of first manufacturing lines are arranged along a first direction, The plurality of second manufacturing lines are arranged along a second direction, The plurality of third manufacturing lines are arranged along a third direction, and The third direction is different from the first direction or the second direction.

10. The battery device manufacturing system according to claim 9, wherein: The second direction is parallel to the first direction, and the third direction is perpendicular to the first direction and the second direction.

11. The battery device manufacturing system according to claim 1, wherein: Each of the plurality of first manufacturing lines includes at least one of a device for measuring the insulation resistance of the plurality of battery cells, a device for measuring the open circuit voltage of the plurality of battery cells, a device for cutting and bending electrode leads of the battery cells, a cell assembly stacking device, a thermal insulation layer attaching device, and an adhesive member attaching device.

12. The battery device manufacturing system according to claim 1, wherein: Each of the plurality of second manufacturing lines includes at least one of a welding device for coupling the battery cell assembly to the bus bar assembly, a welding inspection device, a sensing module assembly device, an insulation cover assembly device, and an end plate coupling device.

13. The battery device manufacturing system according to claim 1, wherein: Each of the multiple third manufacturing lines includes a lower shell supply device, an adhesive applying device for applying adhesive to the lower shell, a sub-battery module assembling device for connecting the sub-battery module to the lower shell, an upper shell connecting device, a sensing module connecting device, a safety cover connecting device, a device for checking the weight of the battery device, a device for checking the size of the battery device, and at least one of a device for charging and discharging the battery device.

14. The battery device manufacturing system according to claim 1, wherein: One of the plurality of second manufacturing lines receives the battery cell assemblies from each of two first manufacturing lines of the plurality of first manufacturing lines.

15. A battery device manufacturing system, comprising: A plurality of first manufacturing lines for manufacturing a plurality of battery cells and stacking cell assemblies of the plurality of battery cells; a plurality of second manufacturing lines, coupling bus bar assemblies to the battery cell assemblies to manufacture sub-battery modules; as well as a plurality of third manufacturing lines, coupling the sub-battery modules to the housing to manufacture battery modules, wherein the number of the plurality of second manufacturing lines is less than the number of the plurality of first manufacturing lines, and The number of the third manufacturing lines is smaller than the number of the second manufacturing lines.

16. A battery device manufacturing facility comprising: a plurality of first manufacturing lines, a plurality of second manufacturing lines, and a plurality of third manufacturing lines, respectively located in a first area, a second area, and a third area of ​​the battery device manufacturing facility; a first conveyor device located between a first area and a second area of ​​the battery device manufacturing facility; a second conveyor device located between the second area and the third area of ​​the battery device manufacturing facility; Wherein, the plurality of first manufacturing lines manufacture battery cell assemblies, each battery cell assembly comprising a plurality of battery cells, The plurality of second manufacturing lines manufacture sub-battery modules by coupling a bus bar assembly to each battery cell assembly, The plurality of third manufacturing lines manufacture battery devices by enclosing at least two sub-battery modules into a housing, The first manufacturing line, the second manufacturing line and the third manufacturing line are arranged along a first direction, a second direction and a third direction respectively. The second direction is parallel to the first direction, and the third direction is perpendicular to the first direction and the second direction. The first conveying device conveys the battery cell assembly from the first manufacturing line to the second manufacturing line; and The second transfer device transfers the sub-battery module from the second manufacturing line to the third manufacturing line.

17. A method for manufacturing a battery module, comprising: Providing a battery device manufacturing system according to claim 1; Assembling a plurality of battery cell assemblies using the plurality of first manufacturing lines; assembling a plurality of sub-battery modules according to the plurality of battery cell assemblies by using the plurality of second manufacturing lines; as well as The battery module is assembled from the plurality of sub-battery modules using the plurality of third manufacturing lines.

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