Apparatus for manufacturing battery module
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2026-01-12
- Publication Date
- 2026-08-13
Smart Images
Figure KR2026000658_13082026_PF_FP_ABST
Abstract
Description
Battery module manufacturing device
[0001] Cross-citation with related application(s)
[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2025-0013986 dated February 4, 2025, and all contents disclosed in the document of said Korean patent application are incorporated herein as part of this specification.
[0003] The present invention relates to a battery module manufacturing apparatus, and more specifically, to a battery module manufacturing apparatus capable of inducing the spreading of an adhesive member so that the adhesive member can be uniformly applied on a module frame.
[0004] In modern society, as the use of portable devices such as mobile phones, laptops, camcorders, and digital cameras, as well as energy storage systems (ESS), has become commonplace, the development of technologies in related fields is becoming active. Furthermore, rechargeable secondary batteries are being utilized as power sources for electric vehicles (EVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles (P-HEVs) as a solution to address air pollution caused by conventional gasoline vehicles using fossil fuels; consequently, the need for the development of secondary batteries is increasing.
[0005] Currently commercialized rechargeable batteries include nickel-cadmium, nickel-hydrogen, nickel-zinc, and lithium-ion batteries. Among these, lithium-ion batteries are receiving the most attention due to their advantages of free charging and discharging, low self-discharge rate, and high energy density.
[0006] While small mobile devices use one or two or three battery cells per device, medium-to-large devices such as automobiles require high output and large capacity. Therefore, medium-to-large battery modules consisting of multiple battery cells electrically connected are used.
[0007] Since it is desirable for medium-to-large battery modules to be manufactured with the smallest possible size and weight, prismatic batteries, pouch-type batteries, etc., which can be stacked with high integration density and have a low weight-to-capacity ratio, are mainly used as battery cells for medium-to-large battery modules. Meanwhile, the battery module may include a frame member that houses the battery cell stack in an internal space, with the front and rear sides open, to protect the battery cell stack from external shock, heat, or vibration.
[0008] In the manufacturing process of a battery module, a stack of battery cells can be accommodated in a frame member. To this end, an adhesive is applied to the lower surface of the frame member, and the stack of battery cells can be placed on the adhesive. At this time, the adhesive spreads over the frame member. However, in the conventional battery module manufacturing process, there is no process or device to induce the spreading of the adhesive applied to the frame member, and consequently, problems such as the adhesive being applied unevenly to the frame member may occur. Therefore, in the case of a battery module manufactured by a conventional battery module manufacturing device, problems such as the stack of battery cells detaching from the frame member may occur.
[0009] The problem that the present invention aims to solve is to provide a battery module manufacturing apparatus capable of inducing the spreading of an adhesive member so that the adhesive member can be uniformly applied on a module frame.
[0010] However, the problems that the embodiments of the present invention aim to solve are not limited to the problems described above and can be expanded in various ways within the scope of the technical ideas included in the present invention.
[0011] A battery module manufacturing device according to one embodiment of the present invention comprises a support member that supports a lower frame coated with an adhesive member, a gripping member that fixes the lower frame disposed on the support member, and a vibration generating member connected to the support member and generating vibration on the lower frame, wherein the vibration generating member generates vibration in a direction parallel to the longitudinal direction in which the lower frame extends, and the adhesive member may be induced to spread on the lower frame by the vibration generated by the vibration generating member.
[0012] The viscosity of the adhesive member decreases as the intensity of the longitudinal vibration generated by the vibration generating part increases, and as the viscosity of the adhesive member decreases due to the vibration, spreading of the adhesive member can be induced.
[0013] The above battery module manufacturing device may further include a vision sensor unit for measuring the degree of spreading of the adhesive member applied to the lower frame.
[0014] A battery cell stack formed by stacking multiple battery cells is placed on the upper part of the adhesive member and accommodated in the lower frame, and the vision sensor unit can acquire the current position of the lower surface of the battery cell stack.
[0015] The above battery module manufacturing device may further include a processor that determines the degree of spreading of the adhesive member based on the current position obtained by the vision sensor unit.
[0016] The processor can determine the degree of spreading of the adhesive member based on the current position relative to the reference position where the spreading of the adhesive member is completed.
[0017] The above processor can control the intensity of the vibration generated by the vibration generating unit according to the degree of spreading of the adhesive member.
[0018] The above processor can stop the operation of the vibration generating unit when the current position reaches the reference position.
[0019] The processor may generate the vibration with a first vibration intensity before the current position reaches a set position spaced upward by a predetermined distance from the reference position, and may generate the vibration with a second vibration intensity different from the first vibration intensity when the current position is between the set position and the reference position.
[0020] The first vibration intensity may be stronger than the second vibration intensity.
[0021] The first vibration intensity may have a value between 2.5 and 40 times that of the second vibration intensity.
[0022] The first vibration intensity and the second vibration intensity are determined by the shear rate of the adhesive member, the shear rate at the first vibration intensity is 1 / s to 4 / s, the shear rate at the second vibration intensity is 0.1 / s to 0.4 / s, and the shear rate is derived from the following Equation 1.
[0023] [Mathematical Formula 1]
[0024]
[0025] Here, n is 1, f is the frequency, A is the amplitude, and h is the thickness of the adhesive member (16).
[0026] The first vibration intensity and the second vibration intensity may decrease gradually or in a stepwise manner.
[0027] The intensity of the above vibration can be controlled by at least one of the frequency and amplitude.
[0028] The above gripping part may include a first gripping part that grips both ends of the lower frame based on the length direction.
[0029] The lower frame comprises a lower plate and side plates extending from each of the two sides of the lower plate with respect to a width direction perpendicular to the length direction, and the gripping portion may further include a second gripping portion that grips the outer surface of the side plate with respect to the width direction.
[0030] The above gripping portion may further include a third gripping portion that grips the upper end of the side plate based on a height direction that is orthogonal to the length direction and the width direction, respectively.
[0031] A battery module manufacturing apparatus according to embodiments of the present invention can reduce the viscosity of an adhesive member by applying longitudinal vibration to an adhesive member applied on a lower frame. Accordingly, the spreading of the adhesive member is rapidly induced, allowing the adhesive member to be uniformly applied on the lower frame. Additionally, by adjusting the intensity of the vibration applied to the adhesive member, the adhesive member can be rapidly applied on the lower frame, and the adhesive member can be applied to a desired area on the lower frame.
[0032] Furthermore, since the adhesive member is uniformly applied to the module frame, it prevents the battery cell stack from detaching from the module frame, thereby improving the safety and reliability of the battery module. In addition, by effectively transferring the heat generated from the battery cells to the bottom of the battery module, that is, to the lower frame of the module frame, the heat from the battery cells can be efficiently dissipated to the outside of the battery module.
[0033] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims.
[0034] FIG. 1 is a perspective view of a battery module according to one embodiment of the present invention.
[0035] Figure 2 is an exploded perspective view of the battery module shown in Figure 1.
[0036] FIG. 3 is a perspective view for explaining a battery module manufacturing apparatus according to one embodiment of the present invention.
[0037] Figure 4 is a front view of the battery module manufacturing device shown in Figure 2.
[0038] Figure 5 is a side view of the battery module manufacturing device shown in Figure 2.
[0039] Figure 6 is a partial drawing showing an enlarged view of section "A" of Figure 5.
[0040] Figure 7 is an exemplary graph illustrating the relationship between the viscosity and shear rate of an adhesive member.
[0041] FIG. 8 is an exemplary drawing for explaining the process of measuring the spread of an adhesive member through a vision sensor unit.
[0042] FIG. 9 is a block diagram for explaining the operation of a vibration generating unit based on the result of measuring the spread of an adhesive member by a vision sensor unit.
[0043] Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein.
[0044] To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification.
[0045] Furthermore, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, and thus the present invention is not necessarily limited to what is illustrated. Thicknesses have been enlarged in the drawings to clearly represent various layers and regions. Additionally, for convenience of explanation, the thickness of some layers and regions has been exaggerated in the drawings.
[0046] Furthermore, when a part such as a layer, membrane, region, or plate is said to be "on" or "on" another part, this includes not only the case where it is "directly above" the other part, but also the case where there is another part in between. Conversely, when a part is said to be "directly above" another part, it means that there is no other part in between. Also, saying that a part is "on" or "on" a reference part means that it is located above or below the reference part, and does not necessarily mean that it is located "on" or "on" facing the opposite direction of gravity.
[0047] In addition, terms indicating directions such as front, back, left, right, up, and down have been used; however, these terms are merely for the convenience of explanation and may vary depending on the location of the object or the observer.
[0048] Furthermore, throughout the specification, when a part is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.
[0049] Additionally, throughout the specification, "planar" means when the subject part is viewed from above, and "cross-sectional" means when the cross-section obtained by vertically cutting the subject part is viewed from the side.
[0050] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0051] FIG. 1 is a perspective view of a battery module according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of the battery module shown in FIG. 1.
[0052] Referring to FIGS. 1 and 2, a battery module (100) according to one embodiment of the present invention may include a battery cell stack (12) comprising a plurality of battery cells (11), a module frame (13) accommodating the battery cell stack (12), an adhesive member (16) applied on the module frame (13), and an end plate (17) covering an open portion of the module frame (13).
[0053] The battery cell (11) according to the present embodiment may be a pouch-type battery cell in which an electrode assembly having electrode leads protruding in one or both directions is housed in a pouch case, wherein the battery cell is stacked along one direction to form a battery cell stack (12). However, this is merely one example, and the battery cell according to another embodiment of the present invention may be a prismatic battery, or a cylindrical battery cell may form an assembly. However, for convenience of explanation, the following description will be based on the assumption that the battery cell (11) according to the present embodiment is a pouch-type battery cell.
[0054] The battery cells (11) are composed of multiple cells, and the multiple battery cells (11) are stacked so that they can be electrically connected to each other to form a battery cell stack (12). That is, in the battery cell stack (12), the battery cells (11) can be stacked along one direction. In particular, as shown in FIG. 2, multiple battery cells (11) can be stacked along a direction parallel to the y-axis while standing upright so that one side of the cell body faces each other.
[0055] The module frame (13) may be a structure in which one side and the other side opposite to the one side are open. More specifically, the module frame (13) may be open in both directions (x-axis direction and -x-axis direction) in which electrode leads protrude relative to the battery cell stack (12). A module frame (13) according to one embodiment of the present invention may include a lower frame (14) covering the lower surface and both sides of the battery cell stack (12) and an upper plate (15) covering the upper surface of the battery cell stack (12). The lower frame (14) may include a lower plate covering the battery cell stack (12) and side plates extending from each of the two sides of the lower plate. The lower frame (14) and the upper plate (15) may be joined at corresponding corners to form the module frame (13). Specifically, the upper ends of the two side plates of the lower frame (14) may be joined to the upper plate (15) by welding.
[0056] The adhesive member (16) can be applied to the module frame (13). More specifically, the adhesive member (16) can be applied to the lower frame (14) of the module frame (13). Accordingly, the battery cell stack (12) can be placed on the upper part of the adhesive member (16). As the adhesive member (16) is placed between the battery cell stack (12) and the lower frame (14), the adhesive force between the battery cell stack (12) and the module frame (13) can be made more robust. In this case, even if an external impact is applied to the battery module (10), the battery cell stack (12) can be prevented from detaching from the module frame (13), thereby improving the safety and reliability of the battery module (10).
[0057] The adhesive member (16) may be formed, for example, from a thermally conductive resin, and more specifically, from a thermal resin. The adhesive member (16) may be formed by applying it onto the module frame (13) and then curing it. That is, the adhesive member (16) may be applied onto the module frame (13) in a viscous liquid state and then cured to fix the battery cell stack (12) onto the module frame (13). In addition, the adhesive member (16) can efficiently dissipate the heat generated from the battery cell (11) to the outside of the battery module (10) by transferring the heat generated from the battery cell (11) to the bottom part of the battery module (10), that is, to the lower frame (14) of the module frame (13).
[0058] The end plates (17) are composed of multiple plates and can cover each of the open sides of the module frame (13). By housing the battery cell stack (12) in the internal space formed by the module frame (13) and the end plates (17), the battery cell stack (12) can be physically protected. To this end, the module frame (13) and the end plates (17) may include a metal material having a certain strength. Meanwhile, the module frame (13) and the end plates (17) can be joined by a welding method while their corresponding corner portions are in contact with each other.
[0059] FIG. 3 is a perspective view illustrating a battery module manufacturing apparatus according to an embodiment of the present invention. FIG. 4 is a front view of the battery module manufacturing apparatus shown in FIG. 2. FIG. 5 is a side view of the battery module manufacturing apparatus shown in FIG. 2. FIG. 6 is a partial drawing showing an enlarged view of section "A" of FIG. 5. FIG. 7 is an exemplary graph illustrating the relationship between the viscosity and shear rate of an adhesive member.
[0060] Referring to FIGS. 3 to 7, a battery module manufacturing device (100) according to one embodiment of the present invention may include a support member (110) that supports a lower frame (14) coated with an adhesive member (16), a gripping member (130) that fixes the lower frame (14) placed on the support member (110), and a vibration generating member (120) that is connected to the support member (110) and generates vibration in the lower frame (14).
[0061] The support member (110) may be formed in a flat plate shape to support the lower frame (14) on which the adhesive member (16) is applied. As described below, the support member (110) may receive vibrations generated from a vibration generating member (120) positioned at the bottom. Additionally, the support member (110) may transmit the vibrations received from the vibration generating member (120) to the lower frame (14). In order to transmit vibrations while supporting the lower frame (14), the support member (110) may be formed as a member having rigidity.
[0062] The vibration generating unit (120) is positioned at the bottom of the support unit (110) and connected to the support unit (110). The vibration generating unit (120) generates vibration, and the generated vibration is transmitted to the support unit (110). Specifically, the vibration generating unit (120) generates vibration in a direction parallel to the length direction in which the lower frame (14) extends (x-axis direction and -x-axis direction). Accordingly, the adhesive member (16) can be induced to spread on the lower frame (14) by the vibration generated by the vibration generating unit (120).
[0063] As described above, the adhesive member (16) is a liquid substance having relatively high viscosity, and even when applied to the lower frame (14), it is difficult to apply it uniformly over the entire lower frame (14) because it has relatively high viscosity. Therefore, the spreading of the adhesive member (16) is induced, which means that the adhesive member (16) can be applied more uniformly over the lower frame (14) by the vibration generated by the vibration generating unit (120).
[0064] In particular, as illustrated in FIG. 7, the viscosity of the adhesive member (16) may decrease as the intensity of the longitudinal vibration generated by the vibration generating unit (120) increases. Meanwhile, the intensity of the vibration may be determined based on the shear rate, and a detailed explanation regarding the calculation of the shear rate will be provided later. Accordingly, in the battery module manufacturing device (100) according to one embodiment of the present invention, the viscosity of the adhesive member (16) decreases as vibration is applied to the lower frame (14), and as the viscosity of the adhesive member (16) decreases, spreading of the adhesive member (16) is induced. That is, compared to the case where vibration is not applied to the lower frame (14), the adhesive member (16) can be applied more uniformly as vibration is applied to the lower frame (14) in the battery module manufacturing device (100).
[0065] Additionally, the vibration generating unit (120) can more effectively induce the spreading of the adhesive member (16) by generating vibrations in a direction parallel to the length direction of the lower frame (14), which is the direction in which the adhesive member (16) mainly spreads (x-axis direction and -x-axis direction). If the vibration generating unit (120) generates vibrations in various directions, the adhesive member (16) may be induced to spread in the width direction of the lower frame (14), collide with the side plate, or oscillate in the height direction. Consequently, problems may occur such as the adhesive member (16) not being applied uniformly on the lower frame (14) or air bubbles forming within the adhesive member (16).
[0066] The vibration generating unit (120) is a device for applying vibration to the lower frame (14) in the longitudinal direction (x-axis direction and -x-axis direction), and since it is a configuration that can be commonly used to generate vibration and transmit it to the support unit (110), a detailed description thereof will be omitted.
[0067] The gripping member (130) is a member that restricts the movement of the lower frame (14) placed on the support member (110). To this end, the gripping member (130) can prevent the lower frame (14) from moving by contacting or pressing on the outer surface of the lower frame (14). In particular, according to the battery module manufacturing device (100) according to one embodiment of the present invention, since the support member (110) connected to the vibration generating member (120) vibrates in the longitudinal direction (x-axis direction and -x-axis direction), it is necessary to fix the lower frame (14) on the support member (110) in order to apply vibration to the lower frame (14). Since the lower frame (14) is fixed on the support member (110) through the gripping member (130), the vibration generated by the vibration generating member (120) can be effectively transmitted to the lower frame (14). In addition, by fixing the lower frame (14) on the support member, damage to the lower frame (14) can be prevented during the process of applying vibration to the lower frame (14).
[0068] The gripping member (130) may include a first gripping member (131) that grips both ends of the lower frame (14) based on the length direction (x-axis direction and -x-axis direction), a second gripping member (132) that grips the outer surface of the side plate based on the width direction (y-axis direction and -y-axis direction), and a third gripping member (133) that grips the upper ends of the side plate based on the height direction (z-axis direction and -z-axis direction) which is orthogonal to the length direction and width direction, respectively. Accordingly, the gripping member (130) can restrict the movement of the lower frame (14) in all directions.
[0069] The gripping portion (130) is a member for restricting the movement of the lower frame (14) and may be in the shape of a block for contacting or pressing on the outer surface of the lower frame (14). However, the shape of the gripping portion (130) is not limited to the above description and may be modified or changed in various ways depending on the environment in which the present invention is implemented. For example, the gripping portion (130) may restrict the movement of the lower frame (14) in a form that hooks onto the end of the lower frame (14).
[0070] The gripping portion (130) is a member that comes into direct contact with the lower frame (14). Accordingly, the gripping portion (130) may be formed as a member having elasticity so that it can be deformed to prevent damage to the lower frame (14). Alternatively, an elastic member may be attached to the contact surface of the gripping portion (130). The gripping portion (130) may be formed, for example, of rubber, silicone, etc., or a pad member formed of rubber, silicone, etc. may be attached. However, the elastic material is not limited to what is described above and may be modified or changed in various ways depending on the environment in which the present invention is implemented.
[0071] FIG. 8 is an exemplary diagram illustrating the process of measuring the spread of an adhesive member through a vision sensor unit. FIG. 9 is a block diagram illustrating the operation of a vibration generating unit based on the result of measuring the spread of an adhesive member by the vision sensor unit.
[0072] Referring to FIGS. 8 and 9, a battery module manufacturing apparatus (100) according to one embodiment of the present invention may include a vision sensor unit (140) for measuring the degree of spreading of an adhesive member (16) applied to a lower frame (14), and a processor (150) for determining the degree of spreading of the adhesive member (16) based on the current position of the lower surface of a battery cell stack (12) obtained by the vision sensor unit (140).
[0073] The vision sensor unit (140) can measure the degree of spread of the adhesive member (16) applied to the lower frame (14). The vision sensor unit (140) can be positioned at a predetermined distance in the longitudinal direction (x-axis direction) from the lower frame (14). That is, the vision sensor unit (140) can measure the degree of spread of the adhesive member (16) applied to the lower frame (14) through an open part of the lower frame (14).
[0074] The vision sensor unit (140) can acquire the current position of the lower surface of the battery cell stack (12). For example, the vision sensor unit (140) may be an image sensor capable of acquiring an image of the lower surface of the battery cell stack (12).
[0075] The processor (150) can determine the degree of spreading of the adhesive member (16) applied to the lower frame (14) based on the current position obtained by the vision sensor unit (140).
[0076] The processor (150) may include, for example, a micro controller unit (MCU). The processor (150) may be provided inside the battery module manufacturing device (100) or separately provided outside the battery module manufacturing device (100) to communicate remotely with the battery module manufacturing device (100). The form of the processor (150) may be varied or changed in various ways depending on the environment in which the present invention is implemented.
[0077] As illustrated in FIG. 8, a battery cell stack (12) is placed on top of an adhesive member (16) and accommodated in a lower frame (14). Since the adhesive member (16a) is in an aggregated form in a specific part of the lower frame (14) before the adhesive member (16a) spreads evenly across the lower frame (14), the battery cell stack (11a) placed on top of the adhesive member (16a) is positioned at a relatively high position. Therefore, the lower surface of the battery cell stack (11a) before the adhesive member (16a) spreads across the lower frame (14) is higher than the lower surface of the battery cell stack (11b) after the adhesive member (16b) spreads across the lower frame (14).
[0078] The processor (150) can set the position of the lower surface of the battery cell stack (11b) at the time when the adhesive member (16b) is fully spread on the lower frame (14) as a reference position (DP). The processor (150) can determine the degree of spread of the adhesive member (16) applied to the lower frame (14) by comparing the reference position (DP) of the lower surface of the battery cell stack (11b) with the current position (MP) of the lower surface of the battery cell stack (11a).
[0079] The processor (150) can control the vibration intensity generated by the vibration generating unit (120) according to the degree of spreading of the adhesive member (16).
[0080] For example, the processor (150) can stop the operation of the vibration generating unit (120) when the current position (MP) on the lower surface of the battery cell stack (12) reaches the reference position (DP). The processor (150) can reduce the viscosity of the adhesive member (16) by generating vibration through the vibration generating unit (120) until the spreading of the adhesive member (16) applied to the lower frame (14) is completed. Through this, the spreading of the adhesive member (16) is induced so that the adhesive member (16) can be uniformly applied on the lower frame (14). When the spreading of the adhesive member (16) applied to the lower frame (14) is completed, the processor (150) can increase the viscosity of the adhesive member (16) again by stopping the operation of the vibration generating unit (120). By doing so, the viscosity of the adhesive member (16) is restored (increased), thereby preventing the adhesive member (16) from spreading further on the lower frame (14).
[0081] Additionally, although not shown in FIG. 8, the processor (150) may set a position spaced upward by a predetermined distance from the reference position (DP) as the set position. The processor (150) may generate vibrations with a first vibration intensity until the current position (MP) of the lower surface of the battery cell stack (12) reaches the set position, and may generate vibrations with a second vibration intensity different from the first vibration intensity until the current position (MP) of the lower surface of the battery cell stack (12) is between the set position and the reference position (DP) reaches the reference position (DP).
[0082] For example, the first vibration intensity may be stronger than the second vibration intensity. That is, the processor (150) can control the vibration generating unit (120) so that the first vibration intensity is stronger than the second vibration intensity. Through this, the processor (150) can reduce the viscosity of the adhesive member (16) relatively significantly by applying a stronger vibration to the lower frame (14) until the current position (MP) of the lower surface of the battery cell stack (12) reaches the set position. This induces the spreading of the adhesive member (16) more quickly, allowing the adhesive member (16) to be applied quickly onto the lower frame (14). Additionally, the processor (150) can reduce the viscosity of the adhesive member (16) relatively slightly by applying a weaker vibration to the lower frame (14) until it reaches the reference position (DP) when the position is between the set position and the reference position (DP) of the lower surface of the battery cell stack (12). The spreading of the adhesive member (16) is induced more slowly, so that the area where the adhesive member (16) is applied on the lower frame (14) can be accurately controlled.
[0083] For example, the processor (150) can control the first vibration intensity to have a value between 2.5 and 40 times the second vibration intensity, preferably between 7 and 15 times. However, the ratio of the first vibration intensity and the second vibration intensity is not limited to what is described above and may be varied or changed in various ways depending on the environment in which the present invention is implemented.
[0084] Additionally, the first vibration intensity and the second vibration intensity may be gradually reduced. That is, the processor (150) may control the vibration generating unit (120) so that the first vibration intensity and the second vibration intensity are gradually reduced. As the first vibration intensity and the second vibration intensity are gradually reduced, the viscosity of the adhesive member (16) may also be gradually increased. Accordingly, the spreading of the adhesive member (16) is gradually slowed down, so that the area where the adhesive member (16) is applied on the lower frame (14) can be controlled more accurately. At this time, the form in which the first vibration intensity and the second vibration intensity are reduced may be linear and may have a convex or concave graph. However, the form in which the first vibration intensity and the second vibration intensity are reduced is not limited to what is described above and may be modified or changed in various ways depending on the environment in which the present invention is implemented. For example, the first vibration intensity and the second vibration intensity may be reduced in a stepwise manner.
[0085] The intensity of the vibration can be controlled by at least one of the frequency and amplitude.
[0086] For example, the shear rate is equal to the following mathematical formula 1.
[0087]
[0088] Here, n is a predetermined constant, f is the frequency, A is the amplitude, and h is the thickness of the adhesive member (16). The above n can be determined according to the type of vibration. However, in the following description, the case where n=1 will be explained.
[0089] Referring to the above mathematical formula 1, the processor (150) can control the intensity of the vibration generated by the vibration generating unit (120) based on at least one of the frequency and amplitude.
[0090] Additionally, the processor (150) can control the first vibration intensity so that the shear rate has a value of 1 / s to 4 / s, preferably 2 / s to 3 / s. Additionally, the processor can control the second vibration intensity so that the shear rate has a value of 0.1 / s to 0.4 / s, preferably 0.2 / s to 0.3 / s.
[0091] As described above, by controlling the first vibration intensity and the second vibration intensity, the viscosity of the adhesive member (16) can be effectively reduced. Accordingly, the spreading of the adhesive member (16) is effectively induced so that the adhesive member (16) can be uniformly applied on the lower frame (14). In addition, before the spreading of the adhesive member (16) is completed, the spreading of the adhesive member (16) is slowed down so that the adhesive member (16) can be applied to a desired area on the lower frame (14).
[0092] Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims also fall within the scope of the present invention.
[0093] [Explanation of the symbol]
[0094] 10: Battery module
[0095] 11: Battery cell
[0096] 12: Battery cell stack
[0097] 13: Module Frame
[0098] 14: Lower frame
[0099] 15: Upper plate
[0100] 16: Adhesive member
[0101] 17: End plate
[0102] 100: Battery module manufacturing device
[0103] 110: Support
[0104] 120: Vibration generating unit
[0105] 130: Waste paper
[0106] 131: 1st Pajibu
[0107] 132: 2nd Pajibu
[0108] 133: 3rd Pajibu
[0109] 140: Vision sensor unit
[0110] 150: Processor
Claims
1. A support member that supports a lower frame coated with an adhesive member; A gripping member for fixing a lower frame disposed on the above-mentioned support member; and It includes a vibration generating part connected to the above support and generating vibration in the lower frame, The above vibration generating unit generates vibration in a direction parallel to the length direction in which the lower frame extends, and A battery module manufacturing device in which the adhesive member is induced to spread on the lower frame by the vibration generated by the vibration generating part.
2. In Paragraph 1, The viscosity of the adhesive member decreases as the intensity of the longitudinal vibration generated by the vibration generating part increases, and A battery module manufacturing device in which spreading of the adhesive member is induced as the viscosity of the adhesive member is lowered by the above vibration.
3. In Paragraph 2, A battery module manufacturing device further comprising a vision sensor unit for measuring the degree of spreading of the adhesive member applied to the lower frame.
4. In Paragraph 3, A battery cell stack formed by stacking multiple battery cells is placed on the upper part of the adhesive member and accommodated in the lower frame, and A battery module manufacturing device in which the vision sensor unit acquires the current position of the lower surface of the battery cell stack.
5. In Paragraph 4, A battery module manufacturing apparatus further comprising a processor that determines the degree of spreading of the adhesive member based on the current position obtained by the vision sensor unit.
6. In Paragraph 5, A battery module manufacturing device in which the processor determines the degree of spreading of the adhesive member based on the current position relative to a reference position where the spreading of the adhesive member is completed.
7. In Paragraph 6, A battery module manufacturing device in which the processor controls the intensity of the vibration generated by the vibration generating unit according to the degree of spreading of the adhesive member.
8. In Paragraph 7, A battery module manufacturing device in which the processor stops the operation of the vibration generating unit when the current position reaches the reference position.
9. In Paragraph 8, The processor generates the vibration with a first vibration intensity before the current position reaches a set position spaced upward by a predetermined distance from the reference position, and A battery module manufacturing device that generates the vibration with a second vibration intensity different from the first vibration intensity when the current position is between the set position and the reference position.
10. In Paragraph 9, A battery module manufacturing device in which the first vibration intensity is stronger than the second vibration intensity.
11. In Paragraph 10, A battery module manufacturing device in which the first vibration intensity has a value between 2.5 and 40 times that of the second vibration intensity.
12. In Paragraph 10, The first vibration intensity and the second vibration intensity are determined by the shear rate of the adhesive member, and The shear rate at the first vibration intensity is 1 / s to 4 / s, and the shear rate at the second vibration intensity is 0.1 / s to 0.4 / s, and The above shear rate is derived from the following mathematical formula 1, and [Mathematical Formula 1] A battery module manufacturing device, wherein n is 1, f is the frequency, A is the amplitude, and h is the thickness of the adhesive member (16).
13. In Paragraph 10, A battery module manufacturing device in which the first vibration intensity and the second vibration intensity decrease gradually or in a stepwise manner.
14. In Paragraph 7, A battery module manufacturing device in which the intensity of the above vibration is controlled by at least one of the frequency and amplitude.
15. In Paragraph 1, A battery module manufacturing device comprising a first gripping portion that grips both ends of the lower frame based on the length direction.
16. In Paragraph 15, The lower frame comprises a lower plate and side plates extending from each of the two sides of the lower plate with respect to a width direction perpendicular to the length direction, and A battery module manufacturing device comprising a second gripping member that grips the outer surface of the side plate based on the width direction.
17. In Paragraph 16, A battery module manufacturing device comprising a third gripping member that grips the upper end of the side plate based on a height direction that is orthogonal to the length direction and the width direction, respectively.