Core and core mounting jig for assembling a transverse member of a battery housing

Abstract

Disclosed is a core and a core mounting jig for assembling a lateral member of a battery case. A core for assembling a lateral member of a battery case can be inserted into a closed section in a longitudinal direction of the lateral member to laser weld at least one part to be assembled to the lateral member of the battery case with the closed section. The core can include a first core block made of steel including a first sliding surface formed at one side in a width direction, the first sliding surface being inclined in a direction toward the other side; a second core block made of steel including a second sliding surface formed as inclined at one side in a width direction to slide in an up-down direction on the corresponding first sliding surface; a plurality of first magnet members mounted on one surface of the first core block; and a plurality of second magnet members mounted on one surface of the second core block facing one surface of the first core block.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2022-0002597, filed on January 7, 2022, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Background of the Invention

[0003] (a) Field of Invention

[0004] The present invention relates to an assembly system for a battery case for an electric vehicle, and more specifically, to a core and core mounting fixture for assembling a transverse member mounted on the battery case.

[0005] (b) Related technical description

[0006] In recent years, due to environmental pollution issues and efforts to develop alternative energy sources, the development of electric vehicles has been progressing steadily.

[0007] Electric vehicles are equipped with an electric motor (drive motor) to propel the vehicle and a high-voltage battery pack to supply power to the electric motor. The high-voltage battery pack is the energy source for driving the electric motor and provides high-voltage power to the electric motor through an inverter.

[0008] Battery packs are typically installed in the lower part of the vehicle's main body. A battery pack includes a battery housing with internal space, more than one battery module installed in the internal space of the battery housing, and a cover that covers the battery housing.

[0009] Here, more than one lateral member is mounted on the base plate surface of the battery casing, and this more than one lateral member is configured to separate the mounting areas of more than one battery module. For example, each of the more than one lateral member can be formed with a closed cross-section having a square cross-sectional shape. Components to be assembled (such as casing support brackets, battery module mounting brackets, and reinforcing brackets) are respectively assembled to the more than one lateral member. Components to be assembled can be individually attached to the more than one lateral member.

[0010] According to relevant technologies, while clamping the parts to be assembled together with the transverse components into the welding fixture, the parts to be assembled can be bonded to the outer surface of the transverse components by the laser beam radiated by the laser welding gun of the welding robot.

[0011] However, according to the relevant technology, since each of the more than one transverse member is formed as a closed cross-section with a square cross-section shape, the transverse member may undergo thermal deformation due to the laser beam when the parts to be assembled are laser welded to the outer surface.

[0012] Thermal deformation causes gaps between the transverse member and the part to be assembled. As a result, thermal deformation may be a cause of reduced laser welding quality of the part to be assembled relative to the transverse member.

[0013] The information disclosed in this background section is intended only to enhance the understanding of the background of the present invention, and therefore may contain information that does not constitute prior art known to those skilled in the art in this country. Invention Overview

[0014] An exemplary embodiment of the present invention provides a core and a core mounting fixture for assembling a transverse member of a battery casing, which minimizes thermal deformation of the transverse member caused by the laser beam when the parts to be assembled on the transverse member are joined to the transverse member by laser welding.

[0015] An exemplary embodiment of the present invention provides a core for assembling a transverse member of a battery housing, the core being insertable into a closed section along the longitudinal direction of the transverse member to laser weld at least one part of the transverse member to be assembled into the battery housing to the closed section. The core may include: a first core block made of steel, the first core block including a first sliding surface formed on one side along its width direction, the first sliding surface being inclined in a direction toward the other side; a second core block made of steel, the second core block including a second sliding surface formed inclined on one side along its width direction to slide in a vertical direction on a corresponding first sliding surface; more than one first magnet member mounted on one surface of the first core block; and more than one second magnet member mounted on one surface of the second core block facing one surface of the first core block.

[0016] The first core block may include a sliding member, which is coupled to a surface and has a first sliding surface.

[0017] The sliding member can be fastened to a surface of the first core block by at least one bolt.

[0018] A connecting groove for connecting with the sliding member can be formed on one surface of the second core block.

[0019] A second sliding surface can be formed at the connecting groove.

[0020] A first pressing surface may be formed on another surface of the first core block, and the first pressing surface presses on a surface of the closed section of the transverse member.

[0021] A second pressing surface may be formed on another surface of the second core block, which presses against another surface of the closed section of the transverse member.

[0022] Each of the more than one first magnet component can be assembled to one surface of the first core block and fastened by the first magnet bolt.

[0023] Each of the more than one second magnet component may have a different polarity than each of the more than one first magnet component, and may be fitted to a surface of the second core block and fastened by the second magnet bolts.

[0024] Each of the more than one first magnet component and each of the more than one second magnet component can be arranged to be spaced apart from each other in the vertical direction.

[0025] The locking protrusions can be formed at the two end portions in the longitudinal direction of the first core block and the second core block, respectively.

[0026] Another exemplary embodiment of the present invention provides a core mounting fixture for mounting a core for assembling a transverse member on a closed section of a transverse member of a battery casing. The core mounting fixture may include: a core mounting frame; more than one member support block mounted in a front-rear direction on an upper surface of the core mounting frame to support the transverse member in a longitudinal direction; at least one clamp mounted on the upper surface of the core mounting frame and clamping the transverse member; and a core support block mounted at the front of the core mounting frame to support a longitudinal end portion of the core assembled into the closed section of the transverse member.

[0027] Each of the more than one component support block may include a pair of support ribs that support two surfaces in the width direction of the transverse component, respectively.

[0028] Each of the pair of support ribs can be provided in a form that thickens from top to bottom.

[0029] Each of a pair of support ribs may include a support surface and a tapered surface, the support surface supporting each of the two surfaces in the width direction of the transverse member, and the tapered surface connecting the top and the support surface.

[0030] At least one clamp may include a locator fixed to a core mounting frame, a clamping handle rotatably mounted in the locator and selectively coupled to the locator, a clamping body coupled to the clamping handle, and a clamping block fixed to the clamping body.

[0031] The core support block may include a core support roller rotatably coupled to two support bodies facing each other in the width direction, and a first stop coupled to the top portion of the two support bodies.

[0032] The core mounting fixture may further include: a core alignment frame mounted to be connected to the core mounting frame; more than one core guide block mounted at the rear of the core mounting frame to support another end portion of the core in the longitudinal direction to guide the core to be mounted on the closed section of the transverse member to the closed section, the core being assembled to the closed section of the transverse member and mounted in the core alignment frame to be spaced apart in the front-rear direction; and more than one core alignment block mounted in the core alignment frame to align more than one core to be mounted on the closed section of the transverse member.

[0033] Each of the core guide blocks may include a core guide roller, which is rotatably connected to two guide bodies facing each other in the width direction.

[0034] The second stop can be installed in one of more than one core guide blocks, which corresponds to the other end of the core in the longitudinal direction.

[0035] Each of more than one core alignment block may include two alignment bodies arranged to face each other in the width direction.

[0036] Each of more than one core alignment block can be longitudinally coupled to one end portion of the core, another end portion of the core, and between the one end portion and the other end portion.

[0037] According to the present invention, when a part to be assembled is joined to a transverse member by laser welding, the thermal deformation of the transverse member caused by the laser beam can be minimized by using a core. Therefore, gaps between the transverse member and the part to be assembled can be prevented, and the laser welding quality between the part to be assembled and the transverse member can be further improved.

[0038] In other words, the various effects predicted by exemplary embodiments of the present invention will be disclosed in the detailed description below. Brief description of the attached diagram

[0039] These accompanying drawings are intended to illustrate exemplary embodiments of the invention, and therefore the technical spirit of the invention should not be construed as being limited to the accompanying drawings.

[0040] Figure 1 This is a perspective view showing the core and core mounting fixture of the transverse member for assembling a battery casing according to an exemplary embodiment of the present invention.

[0041] Figure 2 This is a view illustrating an example of a transverse member applied to a core and core mounting fixture for assembling a battery casing according to an exemplary embodiment of the present invention.

[0042] Figure 3This is a connecting perspective view showing the core of a transverse member for assembling a battery casing according to an exemplary embodiment of the present invention.

[0043] Figure 4 This is a partially exploded perspective view showing the core of a transverse member for assembling a battery casing according to an exemplary embodiment of the present invention.

[0044] Figures 5a-5b This is a connecting perspective view showing the core of a transverse member for assembling a battery casing according to an exemplary embodiment of the present invention.

[0045] Figure 6 and Figure 7 This is a view illustrating a core mounting fixture according to an exemplary embodiment of the present invention.

[0046] Figure 8 This is a view showing a component support block applied to a core mounting fixture according to an exemplary embodiment of the present invention.

[0047] Figure 9 This is a view showing a core support block applied to a core mounting fixture according to an exemplary embodiment of the present invention.

[0048] Figures 10a-10b This is a view showing a core guide block applied to a core mounting fixture according to an exemplary embodiment of the present invention.

[0049] Figures 11a-11c This is a view showing a core alignment block applied to a core mounting fixture according to an exemplary embodiment of the present invention.

[0050] It should be understood that the accompanying drawings are not shown to scale, but rather present a simplified representation of various preferred features illustrating the basic principles of the invention. For example, specific design features of the invention, including particular dimensions, orientations, positions, and shapes, will be determined in part according to the specific intended application and the specific environment of use. Detailed Implementation

[0051] The invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the invention.

[0052] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit this disclosure. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise.

[0053] It should also be understood that the terms "include" and / or "including" as used herein indicate the presence of a specific feature, integer, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integers, steps, operations, components, and / or groups thereof. As used herein, the term "and / or" includes one or all random combinations of the associated and listed one or more items.

[0054] The term "connection" in this article refers to the physical relationship between two components that are directly connected to each other through welding, self-piercing riveting (SPR), self-tapping screws (FDS), structural adhesives, etc., or indirectly connected through one or more parametric components.

[0055] As used herein, the terms “vehicle,” “of a vehicle,” “vehicle,” or other similar terms generally include passenger vehicles, which include sport utility vehicles (SUVs), buses, trucks, and various commercial vehicles, and also include hybrid vehicles, electric vehicles, hybrid electric vehicles, electric-based private vehicle (PBV) vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels obtained from resources other than petroleum).

[0056] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0057] Figure 1 This is a perspective view showing the core and core mounting fixture of the transverse member for assembling a battery casing according to an exemplary embodiment of the present invention.

[0058] refer to Figure 1 According to an exemplary embodiment of the present invention, the core 100 and core mounting jig 200 for assembling a transverse member of a battery housing can be applied to the process of assembling a battery housing (not shown) of a battery pack (not shown) mounted on an electric vehicle. Furthermore, according to an exemplary embodiment of the present invention, the core 100 and core mounting jig 200 for assembling a transverse member of a battery housing can be applied to the process of assembling more than one transverse member 1 mounted on a battery housing (not shown).

[0059] More than one transverse member 1 is configured to support and secure more than one battery module (not shown) stored in the battery housing. In one example, each of the more than one transverse member 1 includes a closed section 3, the closed section 3 having as shown in the figure. Figure 2 The cross-sectional shape shown is roughly square.

[0060] Here, at least one bracket 5 (including a battery module mounting bracket and a reinforcing bracket) is joined to each of more than one transverse member 1, and in addition to at least one bracket 5, at least one part 7 to be assembled can also be assembled (e.g., joined or welded).

[0061] Furthermore, according to an exemplary embodiment of the present invention, the core 100 and core mounting fixture 200 for assembling the transverse members of the battery casing can be applied to a welding assembly process, which laser welds at least one part 7 to be assembled to each of the more than one transverse member 1 by irradiating a laser beam onto the joint portion of each of the more than one transverse member 1 and at least one part 7 to be assembled.

[0062] In an exemplary embodiment of the present invention, it is described that the part 7 to be assembled is laser-welded to a transverse member 1 mounted on a battery casing. However, although not particularly limited thereto, the technical concept of the present invention can be applied if the part to be assembled, such as a bracket, is laser-welded to a base material having a closed cross-section with a fixed shape.

[0063] In this invention, examples of component mounting will be described based on the front-to-back direction.

[0064] Furthermore, in this invention, the term "top portion," "upper portion," "top," or "upper surface" of a component refers to the end portion, part, end, or surface of the component that is relatively above in the figure, and the term "bottom portion," "lower portion," "bottom," or "lower surface" of a component refers to the end portion, part, end, or surface that is relatively below in the figure.

[0065] Furthermore, in this invention, the end of a component (e.g., one end or the other end) refers to the end of the component in a predetermined direction, and the end portion of a component (e.g., one end portion or the other end portion) refers to a predetermined portion of the component including the end.

[0066] According to an exemplary embodiment of the present invention, the core 100 and core mounting fixture 200 for assembling a transverse member of a battery casing are configured such that thermal deformation of the transverse member 1 caused by the laser beam can be minimized when at least one part 7 to be assembled is joined to each of more than one transverse member 1 by laser welding.

[0067] Therefore, according to an exemplary embodiment of the present invention, the core 100 of the transverse member for assembling the battery casing is configured to be inserted into the closed section 3 of each of the more than one transverse member 1 in the longitudinal direction of each of the more than one transverse member 1.

[0068] Figure 3This is a connecting perspective view showing the core of a transverse member for assembling a battery casing according to an exemplary embodiment of the present invention. Figure 4 This is a partially exploded perspective view showing the core of a transverse member for assembling a battery casing according to an exemplary embodiment of the present invention, and Figures 5a-5b This is a connecting perspective view showing the core of a transverse member for assembling a battery casing according to an exemplary embodiment of the present invention.

[0069] refer to Figures 1 to 5b According to an exemplary embodiment of the present invention, the core 100 of the transverse member for assembling a battery casing substantially includes a first core block 10, a second core block 20, more than one first magnet member 30, and more than one second magnet member 40.

[0070] In an exemplary embodiment of the present invention, the first core block 10 is made of steel. The first core block 10 includes a sliding surface 11, which is formed to be inclined in the width direction to the other side at one side.

[0071] A first pressing surface 13 is formed on another surface of the first core block 10, and the first pressing surface 13 presses on more than one surface of the inner side (e.g., closed section 3) of each of the transverse members 1.

[0072] In addition, the first core block 10 also includes a sliding member 15 connected to a surface. The sliding member 15 is formed on the first sliding surface 11 mentioned above in the vertical direction.

[0073] Here, the sliding member 15 is fastened to the first core block 10 by more than one bolt B. Furthermore, first locking protrusions 17 are formed at both end portions in the longitudinal direction of the first core block 10 (see...). Figure 9 and Figures 10a-10b ).

[0074] In an exemplary embodiment of the present invention, the second core block 20 is made of steel. The second core block 20 includes a second sliding surface 21, which is formed to be inclined in the width direction on one side so as to slide in the vertical direction on the first sliding surface 11 of the corresponding first core block 10.

[0075] A second pressing surface 23 is formed on another surface of the second core block 20, which presses against another surface of the inner side (e.g., closed section 3) of more than one of the transverse members 1.

[0076] A connecting groove 25 for connecting the sliding member 15 is formed on one surface of the second core block 20 so that it can slide in the up-down direction on the first sliding surface 11 of the first core block 10.

[0077] Here, a second sliding surface 21 is formed at the connecting groove 25, and the second sliding surface 21 can slide in the vertical direction on the first sliding surface 11 of the sliding member 15. In addition, second locking protrusions 29 are formed at the two end portions in the longitudinal direction of the second core block 20 (see...). Figure 9 and Figures 10a-10b ).

[0078] In an exemplary embodiment of the present invention, more than one first magnet member 30 and more than one second magnet member 40 connect the mutually facing surfaces of the first core block 10 and the second core block 20.

[0079] Each of more than one first magnet component 30 is mounted on one surface of the first core block 10. Each of more than one first magnet component 30 can be mounted to one surface of the first core block 10 and fastened to one surface of the first core block 10 by a first magnet bolt 31.

[0080] Additionally, each of the more than one second magnet component 40 is mounted on a surface of the second core block 20 facing the first core block 10. Each of the more than one second magnet component 40 may exhibit a different polarity than each of the more than one first magnet component 30. Each of the more than one second magnet component 40 may be mounted to a surface of the second core block 20 and fastened to a surface of the second core block 20 by a second magnet bolt 41.

[0081] Here, each of the more than one first magnet member 30 mounted on one surface of the first core block 10 and each of the more than one second magnet member 40 mounted on one surface of the second core block 20 can be arranged to be spaced apart from each other in the vertical direction.

[0082] At the same time, refer to Figure 1 According to an exemplary embodiment of the present invention, the core mounting fixture 200 mounts the core 100 in the closed section 3 of each of more than one transverse member 1 (see [reference]). Figure 2 )superior.

[0083] According to an exemplary embodiment of the present invention, the core mounting fixture 200 basically includes a core mounting frame 110, more than one component support block 130, at least one clamp 150, a core support block 170, a core alignment frame 190, more than one core guide block 210 and more than one core alignment block 230.

[0084] Figure 6 and Figure 7 This is a view illustrating a core mounting fixture according to an exemplary embodiment of the present invention.

[0085] refer to Figure 6 and Figure 7In an exemplary embodiment of the invention, the core mounting frame 110 is mounted on the base plate surface of the processing workplace. The core mounting frame 110 is configured to mount various components, which will be described below. The core mounting frame 110 may consist of one frame or two or more sub-frames.

[0086] The core mounting frame 110 may include various auxiliary elements, such as brackets, rods, bars, plates, shells, housings, blocks, partitions, and ribs configured to support the various components.

[0087] However, since various auxiliary elements are configured to mount the various components described below onto the core mounting frame 110, except as in the exemplary embodiments of the present invention, the various auxiliary elements are collectively referred to as the core mounting frame 110.

[0088] In an exemplary embodiment of the present invention, more than one component support block 130 supports one of more than one transverse component 1 in the longitudinal direction. More than one component support block 130 is mounted on the upper surface of the core mounting frame 110 in the longitudinal direction.

[0089] Each of the more than one component support block 130 includes a pair of support ribs 131 that support the two surfaces of the transverse component 1 in the width direction. Each of the more than one component support block 130 may be provided in a form that gradually thickens from top to bottom.

[0090] Here, each of the pair of support ribs 131 includes a support surface 133 that supports each of the two surfaces of the transverse member 1 in the width direction and a tapered surface 135 that connects the top and the support surface 133.

[0091] In an exemplary embodiment of the invention, at least one clamp 150 is configured to clamp a transverse member 1 supported on more than one member support block 130. At least one clamp 150 may be mounted on the upper surface of the core mounting frame 110.

[0092] At least one gripper 150 includes a positioner 151, a gripping handle 153, a gripping body 155, and a gripping block 157.

[0093] Positioner 151 is fixed to the upper surface of core mounting frame 110. Clamping handle 153 is rotatably mounted in positioner 151 and selectively coupled to positioner 151.

[0094] The clamping body 155 is coupled to the clamping handle 153 to rotate together with the clamping handle 153 in the vertical direction. Additionally, the clamping block 157 presses (e.g., clamps) the upper surface of the transverse member 1. In one example, the clamping block 157 is provided as a rubber block and is fixed to the end portion of the clamping body 155.

[0095] Since at least one gripper 150 is configured as a toggle clamper, as is known to those skilled in the art, a more detailed description of this component will be provided herein.

[0096] In an exemplary embodiment of the present invention, a core support block 170 supports an end portion of the core 100 in the longitudinal direction of the closed section 3 of the transverse member 1. The core support block 170 is mounted on the front of the core mounting frame 110 (e.g., on one side in the longitudinal direction) to correspond to an end portion of the core 100 in the longitudinal direction.

[0097] like Figure 9 As shown, the core support block 170 includes a core support block 173 rotatably connected to two support bodies 171 facing each other, and a first stop 175 connected to the top portion of the two support bodies 171.

[0098] The core support block 173 is configured to rollably contact one end portion of the core 100 in the longitudinal direction of the closed section 3 of the transverse member 1. The first stop 175 supports the first locking protrusion 17 and the second locking protrusion 29, which are formed at one end portion in the longitudinal direction of each of the first core block 10 and the second core block 20.

[0099] In an exemplary embodiment of the invention, the core alignment frame 190 is mounted on the base plate surface of the processing workplace and connected to the core mounting frame 110 in the front-to-back (longitudinal) direction. The core alignment frame 190 is configured to mount various components described below. The core alignment frame 190 may consist of one frame or two or more sub-frames.

[0100] The core alignment frame 190 may include various auxiliary elements, such as brackets, rods, bars, plates, shells, housings, blocks, dividers, and ribs configured to support the various components.

[0101] However, since various auxiliary elements are configured to mount the various components described below onto the core alignment frame 190, except as in the exemplary embodiments of the present invention, the various auxiliary elements are collectively referred to as the core alignment frame 190.

[0102] In an exemplary embodiment of the present invention, more than one core guide block 210 is installed at the rear (other side in the longitudinal direction) of the core mounting frame 110 to support another end portion of the core 100 in the longitudinal direction, so as to guide the core 100 to be mounted on the closed section 3 of the transverse member 1 to the closed section 3, the core 100 being assembled to the closed section 3 of the transverse member 1 and mounted to be spaced apart from the core alignment frame 190 in the front-rear direction.

[0103] like Figures 10a-10b As shown, each of the more than one core guide block 210 includes a core guide roller 213, which is rotatably connected in the width direction to two guide bodies 211 facing each other.

[0104] The core guide roller 213 is configured to rollably contact the lower portion of the core 100.

[0105] Furthermore, among the more than one core guide block 210, a second stop 215 is installed in one core guide block 210 corresponding to another end portion in the longitudinal direction of the core 100. The second stop 215 supports a first locking protrusion 17 and a second locking protrusion 29 formed at another end portion in the longitudinal direction of each of the first core block 10 and the second core block 20.

[0106] In an exemplary embodiment of the present invention, more than one core alignment block 230 aligns more than one core 100 to be installed on the closed section 3 of the transverse member 1 in the longitudinal direction. More than one core alignment block 230 is mounted on the upper surface of the core alignment frame 190.

[0107] Each of the more than one core alignment block 230 includes two alignment bodies 231, the two alignment bodies 231 being arranged to face each other along the width direction, such as Figures 11a-11c As shown. Each of more than one core alignment block 230 can be coupled in the longitudinal direction to one end portion of the core 100, another end portion, and between one end portion and another end portion.

[0108] The following will refer to Figures 1 to 11c The operation of the core 100 and core mounting fixture 200 for assembling a battery casing, according to an exemplary embodiment of the present invention constructed in this manner, is described in detail.

[0109] First, in an exemplary embodiment, more than one core 100 is provided. The more than one core 100 is aligned by more than one core alignment block 230 in the core mounting fixture 200.

[0110] Here, each of the first core block 10 and the second core block 20 in more than one core 100 is connected to each other by more than one first magnet member 30 and more than one second magnet member 40.

[0111] Furthermore, when the first core block 10 is connected to the second core block 20 by more than one first magnet member 30 and more than one second magnet member 40, the first core block 10 is positioned above the second core block 20, and the first sliding surface 11 of the sliding member 15 is located at the upper part of the second sliding surface 21 of the second core block 20.

[0112] Meanwhile, in an exemplary embodiment of the present invention, one of the more than one transverse member 1 is located in more than one member support block 130.

[0113] In this configuration, a transverse member 1 is placed between a pair of support ribs 131 of each of the more than one member support block 130, and is inserted between the pair of support ribs 131 through the tapered surface 135 of the pair of support ribs 131. Here, a transverse member 1 is in such a state that its two surfaces are in close contact with the support surface 133 of a support rib 131 in the longitudinal direction.

[0114] Next, in an exemplary embodiment of the present invention, the clamping handle 153 of at least one clamp 150 is rotated in the upward direction. Then, the clamping body 155 is rotated in the downward direction by the clamping handle 153, and the clamping block 157 presses against the upper surface of the transverse member 1, and clamps the transverse member 1 by the clamping body 155.

[0115] In this state, in an exemplary embodiment of the invention, one of the more than one core 100 aligned in more than one core alignment block 230 is located in more than one core guide block 210 on the core alignment frame 190. A core 100 is disposed on a core guide roller 213 between two guide bodies 211 along the longitudinal direction of each of the more than one core guide blocks 210.

[0116] In this configuration, the second stop 215 of the core guide block 210, located on its rearmost side, blocks the first locking protrusion 17 and the second locking protrusion 29, which are formed at another end portion in the longitudinal direction of each of the first core block 10 and the second core block 20 of a core 100. Furthermore, a core 100, when supported by more than one core guide block 210, is positioned on the same line as the closed section 3 of the transverse member 1.

[0117] Then, in an exemplary embodiment of the present invention, one of the cores 100 located in more than one core guide block 210 is pushed and the core 100 is moved to the front side (one side in the longitudinal direction) of the core mounting frame 110 by the core guide rollers 213 of more than one core guide block 210.

[0118] As a result, a core 100 is inserted into the closed section 3 of the transverse member 1 by more than one core guide block 210, and one end portion of the core 100 in the longitudinal direction is positioned in the width direction between two support bodies 171 by the core support roller 173 of the core support block 170.

[0119] Here, the first stop 175 of the core support block 170 blocks the first locking protrusion 17 and the second locking protrusion 29, which are formed at an end portion in the longitudinal direction of each of the first core block 10 and the second core block 20 of a core 100.

[0120] Additionally, another end portion is located in the core guide block 210, which is mounted at the rear of the core mounting frame 110 along the longitudinal direction of each of the first core block 10 and the second core block 20.

[0121] In an exemplary embodiment of the present invention, when a core 100 is inserted into the closed section 3 of the transverse member 1 as described above, the clamping handle 153 of at least one clamp 150 rotates downward. Then, the clamping body 155 rotates upward via the clamping handle 153, and the clamping block 157 separates from the upper surface of the transverse member 1, releasing the clamping body 155 from the transverse member 1.

[0122] Then, in an exemplary embodiment of the present invention, the transverse member 1 with a core 100 inserted is moved onto a welding fixture (not shown) and fixed to the welding fixture.

[0123] Next, when the two end portions of a core 100 are pressed downward in the welding fixture, the first core block 10 moves away from the second core block 20 as the first sliding surface 11 of the sliding member 15 slides downward along the second sliding surface 21 of the second core block 20.

[0124] As a result, the first core block 10 presses one surface of the closed section 3 of the transverse member 1 through the first pressing surface 13, and presses the other surface of the closed section 3 of the transverse member 1 through the second pressing surface 23.

[0125] Then, in an exemplary embodiment of the present invention, when the part 7 to be assembled is in close contact with the two outer surfaces or one outer surface of the transverse member 1, the part 7 to be assembled can be laser welded to the two outer surfaces or one outer surface of the transverse member 1 by radiating a laser beam to the joining part 7 by the laser welding gun (not shown) of the welding robot (not shown).

[0126] According to the exemplary embodiments of the invention described so far, the core 100 can be inserted into the closed section 3 of the transverse member 1, and the two surfaces within the closed section 3 of the transverse member 1 can be pressed by the core 100.

[0127] Therefore, in an exemplary embodiment of the present invention, when the part 7 to be assembled is joined to the transverse member 1 by laser welding, the thermal deformation of the transverse member 1 caused by the laser beam can be minimized by the core 100.

[0128] As a result, in an exemplary embodiment of the present invention, gaps can be prevented between the transverse member 1 and the part 7 to be assembled, and the laser welding quality between the part 7 to be assembled and the transverse member 1 can be further improved.

[0129] While the preferred embodiments, examples, and implementation examples of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the claims and the detailed description and drawings of the present invention, and these modifications are of course also within the scope of the present invention.

[0130] <Marker Description>

[0131] 1: Transverse member; 3: Closed section

[0132] 5: Support bracket; 7: Parts to be assembled

[0133] 10: First core block; 11: First sliding surface

[0134] 13: First pressing surface; 15: Sliding component

[0135] 17: First locking protrusion; 20: Second core block

[0136] 21: Second sliding surface; 23: Second pressing surface

[0137] 25: Connecting groove; 29: Second locking protrusion

[0138] 30: First magnet component; 31: First magnet bolt

[0139] 40: Second magnet component; 41: Second magnet bolt

[0140] 100: Core 110: Core mounting frame

[0141] 130: Component support block; 131: Support rib

[0142] 133: Support surface; 135: Conical surface

[0143] 150: Gripper 151: Positioner

[0144] 153: Clamping handle 155: Clamping body

[0145] 157: Clamping block; 170: Core support block

[0146] 171: Support body; 173: Core support roller

[0147] 175: First stop element; 190: Core alignment frame.

[0148] 200: Core mounting fixture; 210: Core guide block

[0149] 211: Guiding body; 213: Core guiding roller

[0150] 215: Second stop; 230: Core alignment block

[0151] 231: Align with main body B: bolt.

Claims

1. A core for assembling a transverse member of a battery housing, the core being insertable into a closed section in the longitudinal direction of the transverse member to laser weld at least one part of the transverse member to be assembled into the battery housing to the closed section, the core comprising: A first core block includes a first sliding surface formed on one side along the width direction, the first sliding surface being inclined toward the other side; The second core block includes a second sliding surface, which is inclined at one side along the width direction to slide in the up-down direction on a corresponding first sliding surface. More than one first magnet component is mounted on one surface of the first core block; as well as More than one second magnet component is mounted on one surface of the second core block facing the first core block.

2. The core according to claim 1, wherein: The first core block includes a sliding member, which is coupled to the surface and has the first sliding surface.

3. The core according to claim 2, wherein: The sliding member is fastened to one surface of the first core block by at least one bolt.

4. The core according to claim 3, wherein: A connecting groove for connecting with the sliding member is formed on one surface of the second core block, and The second sliding surface is formed at the connecting groove.

5. The core according to claim 1, wherein: A first pressing surface is formed on another surface of the first core block, the first pressing surface pressing against one surface of the closed section of the transverse member, and A second pressing surface is formed on another surface of the second core block, and the second pressing surface presses against another surface of the closed section of the transverse member.

6. The core according to claim 1, wherein: Each of the more than one first magnet component is assembled to said one surface of the first core block and fastened by the first magnet bolts. Each of the more than one second magnet component has a different polarity than each of the more than one first magnet component, and is assembled to the surface of the second core block and fastened by the second magnet bolt.

7. The core according to claim 6, wherein: Each of the more than one first magnet component and each of the more than one second magnet component are arranged to be spaced apart from each other in the vertical direction.

8. The core according to claim 1, wherein: Locking protrusions are formed at the two end portions of the first core block and the second core block along the longitudinal direction, respectively.

9. A core mounting fixture for mounting a core according to claim 1, used for assembling a transverse member, on a closed section of a transverse member of a battery housing, the core mounting fixture comprising: Core mounting frame; More than one component support block is mounted on the upper surface of the core mounting frame in the front-rear direction to support the transverse component in the longitudinal direction; At least one clamp is mounted on the upper surface of the core mounting frame and clamps the transverse member; as well as A core support block is mounted at the front of the core mounting frame to support one end portion of the core in the longitudinal direction, which is mounted in the closed section of the transverse member.

10. The core mounting fixture according to claim 9, wherein: Each of the more than one component support block includes a pair of support ribs, the pair of support ribs respectively supporting two surfaces of the transverse component in the width direction.

11. The core mounting fixture according to claim 10, wherein: Each of the pair of support ribs is provided in a manner that thickens from top to bottom.

12. The core mounting fixture according to claim 11, wherein, Each of the pair of support ribs includes: A supporting surface that supports each of the two surfaces of the transverse member in the width direction, and A tapered surface that connects the top and the supporting surface.

13. The core mounting fixture according to claim 9, wherein, The at least one clamp includes: Positioner, which is fixed to the core mounting frame, A clamping handle, rotatably mounted in the positioner and selectively coupled to the positioner, A clamping body, which is connected to the clamping handle, and A clamping block is fixed to the clamping body.

14. The core mounting fixture according to claim 9, wherein, The core support block includes: Two supporting bodies facing each other in the width direction. Core support rollers, which are rotatably connected to the two support bodies, and The first stop is connected to the top portion of the two support bodies.

15. The core mounting fixture according to claim 9, further comprising: A core alignment frame, which is mounted to be connected to the core mounting frame; More than one core guide block is mounted at the rear of the core mounting frame to support another end portion of the core in the longitudinal direction, so as to guide the core to be mounted on the closed section of the transverse member to the closed section, the core being assembled into the closed section of the transverse member and mounted in the core alignment frame to be spaced apart in the front-rear direction; and More than one core alignment block is mounted in the core alignment frame to align more than one core to be installed on the closed section of the transverse member.

16. The core mounting fixture according to claim 15, wherein: Each of the core guide blocks includes a core guide roller and two guide bodies, the core guide roller being rotatably connected to the two guide bodies, the two guide bodies facing each other in the width direction.

17. The core mounting fixture according to claim 16, wherein: A second stop is installed in one of the more than one core guide blocks, the core guide block corresponding to the other end portion of the core in the longitudinal direction.

18. The core mounting fixture according to claim 15, wherein: Each of the more than one core alignment block includes two alignment bodies arranged to face each other in the width direction.

19. The core mounting fixture according to claim 17, wherein: Each of the more than one core alignment block is coupled in the longitudinal direction to one end portion of the core, another end portion, and between the one end portion and the other end portion.

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