Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
  • B23K33/004—Filling of continuous seams
  • B23K33/008—Filling of continuous seams for automotive applications
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
  • B23K26/20—Bonding
  • B23K26/21—Bonding by welding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
  • B23K26/20—Bonding
  • B23K26/21—Bonding by welding
  • B23K26/24—Seam welding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
  • B23K33/004—Filling of continuous seams
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K9/00—Arc welding or cutting
  • B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K9/00—Arc welding or cutting
  • B23K9/02—Seam welding; Backing means; Inserts
  • B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K9/00—Arc welding or cutting
  • B23K9/16—Arc welding or cutting making use of shielding gas
  • B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K2101/00—Articles made by soldering, welding or cutting
  • B23K2101/006—Vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K2101/00—Articles made by soldering, welding or cutting
  • B23K2101/36—Electric or electronic devices

Definitions

• the invention relates to an assembly comprising at least two welded components. Furthermore, the invention relates to a battery housing with a frame structure formed from several of these assemblies.
• Modules with at least two metal components to be welded together are well known.
• Several or a plurality of such assemblies can form a product or part of the same.
• Components can be, for example, profiles, sheets or other free-form parts. Such components often have to be connected to other components to form an assembly.
• One possibility of forming an assembly from several components is to connect the components to one another by welding.
• Such assemblies can be involved, for example, in the construction of a battery housing of a motor vehicle. In such a battery housing, individual profiles are welded together to form a frame structure, into which frame structure a tub part, typically divided into individual compartments, is inserted.
• Such a trough consists of a base, circumferential side walls formed thereon, and an assembly flange which is formed on the free end of the side walls and is angled outwards. This mounting flange rests on the top of the frame structure.
• the frame structure thus supports the trough of a battery housing half designed in this way.
• the adjacent profiles are either mitred or the end face of one profile is adjacent to a side wall of the adjacent profile.
• the upper sides of the adjoining profiles should lie on one level so that the mounting flange of the tub, which is angled outwards, can rest flat on it.
• the profiles that are necessarily adjacent to each other as components to secure the desired welded connection are butt welded. Even if the desired connection strengths can be achieved with such a weld seam, the one produced must The assembly is machined after the welding process in order to remove those parts of the welding bead with which it rises above the surface of the adjacent profiles so that the outwardly angled mounting flange of a battery housing trough can lie flat or at least largely flat on the top of the frame structure ,
• a welded assembly in particular suitable for producing a frame structure for a battery housing of a vehicle, in which the manufacturing process is simplified, in particular, a necessary post-processing is fundamentally not necessary.
• a weld pool support is arranged between a first and a second component to be welded to one another, at least in the region of the joint, which weld pool support in the region of the joint forms the bottom of a groove which receives a weld formed during the welding process, the lateral boundary of which is provided in each case by a surface part of the surfaces of the first and second components which adjoin the weld pool support.
• a weld pool support is arranged between the two components to be welded, by means of which the two components to be welded are spaced apart.
• the weld pool support forms the bottom of a groove that is laterally delimited by a surface part of each of the two components.
• the weld pool support with its side forming the bottom of the groove is thus set back from the surface of at least one of the two components.
• the lateral boundaries of this groove are provided by the two components to be welded. It goes without saying that this groove with a base provided by the weld pool support only has to be pronounced at those points at which the two components to be welded are welded together.
• This groove can thus along the be welded on top or, in the case of a stitched seam, be formed by the weld pool support only in those sections by the weld pool support in which welding is to be carried out.
• the groove set in this way between the surface parts of the two components to be joined together serves to receive welding that arises during welding, the melted material or, if a welding filler material is used, also melted filler materials.
• a protrusion of the weld above the surface of the at least one component is counteracted by this measure.
• a protrusion of the welding bead is adjusted within the tolerance of the assembly or an object resting on or supporting it, so that a small protrusion of the welding bead can be perfectly acceptable.
• the distance between the two components and thus also the width of the groove is defined via the weld pool support arranged between the components.
• the same also applies to the depth of the groove between the two components to be joined, which serves as a weld pool receptacle. Since the amount of weld pool created during the welding process can be adequately defined in the design of the assembly, the cross-sectional area of the groove between the components can be appropriately dimensioned by designing the weld pool support by designing the weld pool support.
• Another advantage is an improved tolerance compensation through the bath support. If the bath support is positioned centrally between two components, a tolerance-related gap between the two components is halved, so that there are two smaller gaps between the bath support and the adjacent component. Bridging a smaller gap is particularly advantageous when welding the components.
• the welded assembly has a flat surface within the permitted tolerances in the plane of the weld without machining the welding point, the two components are connected to one another by the weld on their mutually facing surface parts, and though without having to take care during the welding process that the weld seam is welded through, as would be necessary in the prior art if the weld seam is to meet the desired strength requirements.
• the weld pool support is advantageously held on one of the two components to be welded before welding. An additional holding device for holding the weld pool support in its intended position is then not required. Fixing the weld pool support to one of the two components to be welded also enables the weld pool support to be precisely aligned with respect to the groove depth to be formed. Holding the weld pool support on a component also enables correct alignment relative to the component to be welded. Furthermore, handling of the component together with the weld pool support is possible without further ado, for example for positioning it relative to the second component to be welded to the first component.
• the weld pool support is held on the component by a clamp connection before welding.
• This mechanical fastening of the weld pool support to the component enables simple assembly.
• the weld pool support is held in the desired position via the elements causing the clamping.
• this clamping is designed so that the weld pool support is not adjusted during the welding process or even during a positioning process before welding. This can be done via the rigidity, the material properties and / or the geometry of the elements which effect the clamping and which are typically designed as webs.
• the weld pool support is held on one of the two components to be welded by means of a clamping arrangement.
• a clamping arrangement comprises at least two webs projecting from the planar extent of the weld pool support. If a component to be welded is a hollow profile, the clamping arrangement applies to fix the weld pool support in the hollow profile. The webs are typically supported on opposite chamber walls of the hollow profile.
• At least two clamping arrangements are provided for a defined alignment of the weld pool support, which are arranged at an angle, in particular at right angles to one another. This ensures in a simple manner that the weld pool support is fixed to the component in the two directions of its planar extent. If the clamping elements involved in such a clamping arrangement, for example in the form of webs, are plastically deformable without any appreciable elastic component, the weld pool support must be arranged in the correct position in relation to the end face of the component by setting up the weld pool support in relation to the surface area of the component.
• the weld pool support can be individually adapted in a simple manner without the weld pool support springing back to its original position due to a large elastic component.
• the clamping webs can only be plastically deformed to a very small extent and have a large elastic component. This means that if the tolerances to be compensated are known, installation is quick and easy.
• the clamping webs of the clamping arrangements are bent out of the plane of the weld pool support and individually brought into contact with one chamber wall of the hollow profile. With such a configuration, plastic deformation is also carried out on materials with a somewhat higher modulus of elasticity, so that the weld pool support is then held as intended on the one component of such an assembly before welding.
• the surfaces of the two components to be welded form a plane. These can be butt welded to one another, the weld pool support being used to form a component to be welded between these two Groove is held. In this way, for example, a frame structure of a battery housing can be constructed, the surface of which essentially forms a plane despite the weld.
• the components are advantageously welded to one another by a laser welding process with or without additional wire or an Al-MIG welding process.
• the above-described use of the weld pool support between the two components to be welded together effectively prevents the resulting weld from flowing away in an uncontrolled manner, which is particularly advantageous in the case of profiles to be welded together, such as hollow chamber profiles.
• the two components can be arranged at an angle to one another. It is thus possible to assemble a frame structure as part of a battery housing for a vehicle using several of these assemblies. Two adjacent profiles form a welded assembly.
• FIG. 1 a schematic diagram of two butt welded components according to the prior art
• Fig. 2a an arrangement of the individual components of an assembly comprising two components before welding
• 3a a frame structure of a battery housing with several assemblies according to the invention as an assembly drawing
• 3b a longitudinal member of the frame structure from FIG. 3a with weld pool supports attached to the end faces
• FIG. 1 shows a welded assembly 1.
• Two components 2, 3 to be welded together as hollow chamber profiles are abutted against one another at a joint 4, that is to say: their end faces adjoin one another.
• a welding bead 5 has formed which protrudes like a bead from the upper surface O of the components 2, 3 which can be seen in FIG.
• Figure 2a shows a first embodiment of an arrangement for forming an assembly 1.1 according to the invention before welding.
• the two components 2, 3 are arranged with their respective end faces 7a, 7b facing each other, but do not contact each other.
• the end faces 7a, 7b of the two components 2, 3 are spaced apart by a welded pool support 6 designed as a plate-like element, which is connected between the facing end faces 7a, 7b of the two components 2, 3 designed as a hollow chamber profile.
• the surface of the weld pool support 6 pointing in the direction of the top side O of the two components 2, 3 forms a bottom B of a groove 8 located between the components 2, 3 through the weld pool support 6 since it is set back from the top side O of the components 2, 3
• the side walls of the groove 8 are formed by surface portions of the end faces 7a, 7b of the two components 2, 3.
• the dimensioning of this groove 8 is designed such that that the liquid welding produced during welding is absorbed in it without it protruding beyond the surface O of the components 2, 3.
• the welding process is designed in such a way that by melting the welding allowance and melting parts of material delimiting the groove 8, the groove 8 only fulfills the extent that the weld 8.1 does not protrude from the groove 8.
• FIG. 2b shows the assembly 1 shown in FIG. 2a with regard to its individual parts after welding.
• the two components 2, 3 to be welded are connected to one another at the end face by the weld 5.1.
• the weld pool which creates the weld 5.1 is switched on by the weld pool support 6, since it is switched on between the end faces 7a, 7b and adjoins it, preventing it from flowing away during the welding.
• the weld 5.1 fills the groove 8 formed before welding.
• Figure 2c shows another embodiment of a welded assembly 1.2 according to the invention.
• the components 2, 3 to be welded are arranged in a different spatial position relative to one another.
• the component 2 borders with its end face 7a on the upper side O of the component 3.
• the two components 2, 3 are spaced apart from one another by a weld pool support 6.
• the weld 5.1 lies in the groove formed by the components 2, 3 to be welded and the bottom of the weld pool support 6, which is completely filled by the weld 5.1 as described in the exemplary embodiment in FIG. 2a.
• FIG. 3a shows a frame structure 9 of a battery housing for an electric motor-driven vehicle, formed by assemblies according to the invention.
• the frame structure 9 is formed from two assemblies 1.3 according to the invention.
• Each assembly 1.3 comprises a longitudinal beam 10 and a cross beam 11. These are miter cut at the ends, with a weld pool support 6.1 being inserted between the mutually facing end faces, the circumferential narrow side of which forms the bottom B of a groove opposite the outer top side the carrier 10, 11 is set back.
• the carriers 10, 11 are welded to one another all around in the manner described above.
• Two of these modules 1.3 are welded to each other in the same way with their two end faces, which are also mitered to form the frame structure 9.
• the battery volume enclosed by the frame structure 9 is divided into individual battery module receptacles 13 by transverse struts 12.
• two battery modules 14 are used in each battery module receptacle 13.
• the end faces of the cross struts 12 are connected to the inner sides of the longitudinal supports 10. Therefore, the top side O and the bottom side U of the frame structure 9 can be used without any necessary reworking of the welds carried out, so that a cover or a base for completing the battery housing can be attached to it, possibly with the interposition of a seal with their respective mounting flanges can be.
• FIG. 3b shows the carrier 10 at the rear in FIG. 3a with the weld pool support 6.1 connected to its two end faces. These are held in position on the support 10 by means of a clamping connection, so that the support 10 can be handled together with its two weld pool supports 6.1 until the support 10 is welded to the two adjacent supports 11.
• the carrier 10 - the same applies to the carrier 11 - is a hollow chamber profile, the chambering of which can be seen from the enlarged representation of the left-hand end of the carrier 10 with its weld pool support 6.1 in FIG. 3c.
• the end faces of the walls dividing the carrier 10 are shown in dashed lines in this figure and identified by the reference numerals 15a, 15b. It can be clearly seen in this enlarged illustration that the circumferential narrow side 16 of the weld pool support 6.1 is set back from the respectively adjacent outer surface of the carrier 10. This backward offset forms the depth of a circumferential groove intended for receiving the weld pool.
• the latter has two clamping arrangements, each of which is bent out of the plane of the plate-like weld pool support 6.1
• Clamping webs 17a, 17b, 18a, 18b are formed. These clamping webs 17a, 17b, 18a, 18b hold the weld pool support 6.1 in its intended position in relation to the end face of the carrier 10 by their respective support on one of the two inner walls 15a and 15b.
• the two clamping webs 17a, 17b and 18a, 18b of the respective clamping arrangement are spaced apart from one another, as a result of which each clamping arrangement has a longitudinal extension.
• the longitudinal extent of the clamping arrangement formed by the clamping webs 17a, 17b runs in the vertical direction, that of the clamping arrangement formed by the clamping webs 18a, 18b in a horizontal direction.
• the clamping webs 17a, 17b are clamped to the vertically running wall 15a and the clamping webs 18a, 18b of the other clamping arrangement to the horizontally running wall 15b.
• the one web is supported on one side of the wall 15a or 15b, while the other web of the respective clamping arrangement is supported on the opposite side of this wall.
• the clamping webs 17a, 17b, 18a, 18b are issued before the assembly of the weld pool support 6.1 on the end face of the carrier 10, the vertical distance between the sides of the clamping webs 17a, 17b and 18a, 18b facing each other before they are mounted on the carrier 10 is the material thickness of the wall thickness to be enclosed by these clamping webs 17a, 17b or 18a, 18b.
• the clamping webs 17a, 17b, 18a, 18b are then adjusted in the elastic range, which results in the holding forces with which the weld pool support 6.1 is held on the carrier 10.
• FIG. 3d shows a perspective view of the weld pool support 6.1 from its rear side, which cannot be seen in FIG. 3 c, and without a connected carrier 10.
• the clamping webs 17a, 17b, 18a, 18b of the two clamp arrangements, which are shown out of the plane of the weld pool support 6.1, are therein clearly visible.
• FIG. 4 shows a section of a frame structure 9.1 of a battery housing.
• This configuration differs from the previously described configuration of the frame structure 9 solely by the arrangement of the ends of the longitudinal beams 10.1 with the cross beams 11.1 relative to one another.
• Limits in this embodiment the longitudinal members 10.1 with a straight and therefore not mitred end face on a side wall of the cross members 11.1.
• a welded pool support 6.1 is interposed between the end face of the longitudinal beams 10.1 and the respective outside crossmember 11, as has been explained for the exemplary embodiment of FIGS. 3a to 3d described above.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• Plasma & Fusion (AREA)
• Optics & Photonics (AREA)
• Battery Mounting, Suspending (AREA)
• Body Structure For Vehicles (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

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ID=67766142

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Citations (7)

Family Cites Families (4)

• 2018
  • 2018-08-21 DE DE102018120389.6A patent/DE102018120389A1/de active Pending
• 2019
  • 2019-08-21 CN CN201980053502.1A patent/CN112584966A/zh active Pending
  • 2019-08-21 WO PCT/EP2019/072337 patent/WO2020038980A1/de active Application Filing

Patent Citations (7)

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