Automobile battery lower box welding tooling

Abstract

The utility model discloses a kind of automobile battery lower box body welding tool, including base, at least one module area support assembly, welding position support assembly and workpiece fixing assembly.Module area support assembly is set to the base, the module area support assembly includes at least two first support body, each first support body is arranged along horizontal direction, the height of the first support body is adjustably set, the upper end of the first support body is formed with module area support surface, and the first support body is provided with heater;Welding position support assembly is set to the base, and the upper end of the welding position support assembly is formed with welding position support surface;Workpiece fixing assembly is set to the base and can be fixed or loosened on the workpiece on the module area support assembly.

Description

Technical Field

[0001] This utility model relates to welding fixtures, and in particular to a welding fixture for the lower casing of an automotive battery. Background Technology

[0002] The lower casing of an automotive battery requires welding to a water-cooled plate using friction stir welding. Welding fixtures are needed to support, fix, and compensate for deformation of the lower casing and water-cooled plate. Existing welding fixtures for automotive battery lower casings include a base, several module area support plates, welding position support components, and workpiece fixing components. Heaters can be installed on the module area support plates. After welding, the water-cooled plate in the module area is prone to deformation. Therefore, when placing the lower casing in the welding fixture, the height of each module area support plate can be adjusted as a whole. Combined with heaters, this improves the ductility of the module area, providing large-area deformation compensation for one module area of ​​the lower casing. The welding position support components support the linear areas requiring friction stir welding, and the workpiece fixing components pre-fix the lower casing and water-cooled plate for easier welding. As individual module areas become larger, the degree of deformation varies significantly at different locations within a single module area during welding. This can easily lead to localized unevenness exceeding standards, making the deformation compensation through the module area support plates ineffective and affecting workpiece quality. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a welding fixture for the lower casing of an automotive battery, which can reduce the risk of excessive unevenness in localized areas of the module region and improve workpiece quality.

[0004] The automotive battery lower housing welding fixture according to an embodiment of the present invention includes a base, at least one module area support assembly, a welding position support assembly, and a workpiece fixing assembly. The module area support assembly is disposed on the base, and includes at least two first supports arranged horizontally. The height of each first support is adjustable, and a module area support surface is formed at the upper end of each first support. A heater is provided on each first support. The welding position support assembly is disposed on the base, and a welding position support surface is formed at its upper end. The workpiece fixing assembly is disposed on the base and can fix or release the workpiece located on the module area support assembly.

[0005] The automotive battery lower housing welding fixture according to the present invention has at least the following beneficial effects: When preparing for welding, the battery lower housing and the water-cooling plate are placed on the welding fixture. At this time, each module area support component supports one module area of ​​the lower housing and the water-cooling plate, the welding position support component supports the area of ​​the lower housing and the water-cooling plate to be welded, and the workpiece fixing component pre-fixes the lower housing and the water-cooling plate. Since the module area support component includes two or more horizontally arranged first supports, and the height of the first supports can be adjusted independently, the heater improves the ductility of the corresponding area, so that the anti-deformation compensation at each position of the module area can be adaptively adjusted, thereby reducing the risk of excessive unevenness in local positions of the module area after welding and improving the quality of the workpiece.

[0006] According to some embodiments of the present invention, the first support body is provided with a workpiece adsorption component, and the adsorption side of the workpiece adsorption component is arranged facing upward.

[0007] According to some embodiments of the present invention, the module area support assembly includes at least two height adjustment structures arranged at intervals along the horizontal direction, and the height adjustment structure includes at least two first shims stacked vertically, with the two ends of the first support spanning the two adjacent height adjustment structures.

[0008] According to some embodiments of the present invention, one of the first shims of the height adjustment structure is a shim block, and the other first shims are shims. The vertical dimension of the shim block is larger than the vertical dimension of the shims, and the shims are stacked below the shim block.

[0009] According to some embodiments of the present invention, the welding position support assembly includes at least two second supports, the height of which is adjustable.

[0010] According to some embodiments of the present invention, at least two module area support components are provided and arranged at intervals along the horizontal direction. All of the module area support components form a module support area. A portion of the second support body is located between two adjacent module area support components, and another portion of the second support body is arranged around the outer periphery of the module support area.

[0011] According to some embodiments of the present invention, the workpiece fixing assembly further includes a pair of side-pushing mechanisms. The two side-pushing mechanisms are respectively placed on opposite sides of the module support area in the horizontal direction. The side-pushing mechanism includes a side-pushing member and a side-pushing driver. The side-pushing member is movably disposed on the base in the horizontal direction. The two side-pushing members in the pair can move closer to or further away from each other. The side-pushing driver is used to drive the corresponding side-pushing member to move.

[0012] According to some embodiments of the present invention, the workpiece fixing assembly includes a positioning pin and a positioning driver. The positioning pin is movably disposed on the base in the vertical direction, and the positioning driver is disposed on the base and used to drive the positioning pin to move.

[0013] According to some embodiments of the present invention, the workpiece fixing assembly further includes a pressing member and a pressing driver. The pressing member is movably disposed on the base and used to press down the workpiece. The pressing member is located on the upper side of the base. The pressing driver is disposed on the base and used to drive the pressing member to move.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a three-dimensional schematic diagram of the welding fixture according to an embodiment of the present utility model;

[0017] Figure 2 The embodiments of this utility model are as follows Figure 1 A cross-sectional view along the AA direction;

[0018] Figure 3 This is an embodiment of the present utility model. Figure 2 A magnified view of a portion of point B;

[0019] Figure 4 This is an embodiment of the present utility model. Figure 2 A magnified view of a portion of point C.

[0020] Figure label:

[0021] Base 100;

[0022] Module area support component 200, first support body 210, workpiece adsorption component 220, height adjustment structure 230, first shim component 231;

[0023] Welding support assembly 300, second support body 310, second shim 311;

[0024] Workpiece fixing assembly 400, side push mechanism 410, side push component 411, side push driver 412, positioning pin 420, positioning driver 430, holding component 440, holding driver 450.

[0025] Guide block 500;

[0026] Corner support assembly 600, corner support block 610, lifting drive 620. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Reference Figures 1 to 4 This invention relates to a welding fixture for the lower casing of an automotive battery, comprising a base 100, at least one module area support assembly 200, a welding position support assembly 300, and a workpiece fixing assembly 400. The module area support assembly 200 is disposed on the base 100 and includes at least two first support bodies 210, each arranged horizontally. The height of each first support body 210 is adjustable, and a module area support surface is formed at the upper end of each first support body 210. A heater is provided on each first support body 210. The welding position support assembly 300 is disposed on the base 100, and a welding position support surface is formed at the upper end of the welding position support assembly 300. The workpiece fixing assembly 400 is disposed on the base 100 and can fix or release the workpiece located on the module area support assembly 200.

[0032] During welding preparation, the battery lower casing and water-cooling plate are placed on the welding fixture. At this time, each module area support component 200 supports one module area of ​​the lower casing and water-cooling plate, the welding position support component 300 supports the area of ​​the lower casing and water-cooling plate to be welded, and the workpiece fixing component 400 pre-fixes the lower casing and water-cooling plate. Since the module area support component 200 includes two or more horizontally arranged first support bodies 210, and the height of the first support body 210 can be adjusted independently, the heater improves the ductility of the corresponding area, so that the anti-deformation compensation at each position of the module area can be adaptively adjusted, thereby reducing the risk of excessive unevenness in local positions of the module area after welding and improving the quality of the workpiece.

[0033] In the embodiments, reference is made to Figures 1 to 3 The first support 210 is equipped with a workpiece adsorption component 220, with the adsorption side of the workpiece adsorption component 220 facing upwards. By setting the adsorption component, when the lower housing and water-cooled plate are placed on the welding fixture, the adsorption component can adhere to the bottom wall of the module area, further fixing the lower housing and water-cooled plate; and because the heater enhances the ductility of the lower housing and water-cooled plate, the adsorption component, together with the adsorption component, allows the bottom wall of the module area to fit more closely to the module area support surface at the upper end of the first support 210, resulting in a more fitting anti-deformation compensation and reducing rebound after cooling.

[0034] Specifically, the workpiece adsorption component 220 is a suction cup, which can be driven by an air pump. It is conceivable that in some other embodiments, when the housing and water-cooling plate are made of iron, the workpiece adsorption component 220 could also be a magnet.

[0035] In the embodiments, reference is made to Figure 2 and Figure 3 The module area support assembly 200 includes two or more height adjustment structures 230 arranged at intervals along the horizontal direction. Each height adjustment structure 230 includes two or more first shims 231 stacked vertically. The two ends of the first support body 210 span across two adjacent height adjustment structures 230.

[0036] The height adjustment structure 230 is formed by stacking two or more first shims 231, and the height is adjusted by adjusting the number of stacks. The adjustment method is simple and reliable. The first support body 210 is straddling two adjacent height adjustment structures 230, so that the upper surface of the plurality of first support bodies 210 can have a gradual transition, and the anti-deformation compensation is smoother.

[0037] In the embodiments, reference is made to Figure 2 and Figure 3 In the height adjustment structure 230, one of the first raising components 231 is a block, and the other first raising components 231 are shims. The vertical dimension of the block is larger than that of the shims, and the shims are stacked below the block. By combining the block and the shims, adjustment is relatively convenient, the number of parts is small, and the adjustment accuracy is high.

[0038] Specifically, the different thicknesses of some gaskets allow production personnel to reasonably match gaskets of different specifications to obtain the first support 210 of the required height, making the adjustment more flexible and reliable.

[0039] It is conceivable that in other embodiments, the height of the first support 210 can also be adjusted by other structures. For example, the first support 210 is fixedly connected to a stud, and the base 100 is provided with a threaded hole, so that its height can be finely adjusted by rotating the first support 210.

[0040] Specifically, some module area support components 200 are provided with six first support bodies 210; other module area support components 200 are provided with twelve first support bodies 210; the heater inside each first support body 210 is a heating plate. It can be understood that the number of first support bodies 210 in each module area support component 200 can also be other numbers, such as two or more.

[0041] In the embodiments, reference is made to Figure 3 and Figure 4 The welding support assembly 300 includes at least two second supports 310, the height of which is adjustable. The lower housing and water-cooled plate are typically subjected to friction stir welding at crossbeams or ribs. The adjustable height of the second supports 310 allows them to independently adapt to the height of the crossbeams or ribs at various points on the lower housing and water-cooled plate, resulting in more stable support and improved welding performance.

[0042] In the embodiments, reference is made to Figure 3 and Figure 4 The second support 310 includes two or more second shims 311 stacked vertically, with the upper second shim 311 forming a welding support surface. The second support 310 is formed by stacking two or more second shims 311, which has a simple and reliable structure and is flexible in use and adjustment.

[0043] Specifically, the upper second shim 311 is a shim block, and the remaining second shims 311 are shims, which makes the overall height of the second support 310 higher, with fewer parts and higher adjustment accuracy.

[0044] It is conceivable that in other embodiments, the height of the second support 310 can also be adjusted in other ways. For example, the second support 310 is fixedly connected with a stud, and the base 100 is provided with a threaded hole, so that its height can be finely adjusted by rotating the second support 310.

[0045] In the embodiments, reference is made to Figure 1The module area support components 200 are arranged in six horizontally spaced groups, forming a module support area. Some second supports 310 are located between adjacent module area support components 200, while others are arranged around the outer perimeter of the module support area. Since the welding area is typically a beam or rib, and the module area is a cavity, this layout is suitable for conventional battery lower casing and water-cooling plate layouts.

[0046] It is understandable that the module area support component 200 can be set to two, three or more, and no limitation is made here.

[0047] In the embodiments, reference is made to Figure 1 The workpiece fixing assembly 400 also includes a pair of side-pushing mechanisms 410. The two side-pushing mechanisms 410 are positioned on opposite sides of the module support area along the horizontal direction. Each side-pushing mechanism 410 includes a side-pushing member 411 and a side-pushing driver 412. The side-pushing member 411 is movably mounted on the base 100 along the horizontal direction. The two side-pushing members 411 can move closer to or further away from each other. The side-pushing driver 412 is used to drive the corresponding side-pushing member 411 to move. The pair of side-pushing mechanisms 410 can horizontally clamp and fix the lower housing, facilitating the alignment and welding of the welding equipment.

[0048] Specifically, the side push actuator 412 is a cylinder that pushes the inclined push block to extend and retract vertically, and the inclined push block pushes the side push member 411 to move horizontally. It is conceivable that in some other embodiments, the side push actuator 412 can also be other structures, such as a hydraulic cylinder, to directly drive the side push member 411 to move.

[0049] Specifically, the module support area has paired side-pushing mechanisms 410 on the front and rear sides and the left and right sides, which provides good horizontal positioning effect.

[0050] In the embodiments, reference is made to Figure 1 The workpiece fixing assembly 400 includes a positioning pin 420 and a positioning driver 430. The positioning pin 420 is movably disposed on the base 100 in the vertical direction, and the positioning driver 430 is disposed on the base 100 and used to drive the positioning pin 420 to move. The lower housing has a pin hole. When the positioning pin 420 is driven to rise by the positioning driver 430, the positioning pin 420 can be inserted into the pin hole of the lower housing for alignment and positioning. When the workpiece needs to be replaced, the positioning pin 420 descends to reset.

[0051] In the embodiments, reference is made to Figure 1The workpiece fixing assembly 400 also includes a clamping member 440 and a clamping driver 450. The clamping member 440 is movably disposed on the base 100 and is used to press down the workpiece. The clamping member 440 is located on the upper side of the base 100. The clamping driver 450 is disposed on the base 100 and is used to drive the clamping member 440 to move. The clamping member 440 is driven by the clamping driver 450 to press down the lower battery casing and the water-cooling plate. Since the base 100 supports the lower battery casing and the water-cooling plate through the module area support assembly 200 and the welding position support assembly 300, the two can work together to clamp and fix the workpiece from above and below, and the clamping effect is good.

[0052] Specifically, some of the pressing actuators 450 can be cylinder-driven swing arms that swing, causing the pressing member 440 to rotate to the upper side of the workpiece and press down on the workpiece; other pressing actuators 450 are rotary pressing cylinders that rotate the pressing member 440 to the upper side of the workpiece and press down on the workpiece.

[0053] In the embodiments, reference is made to Figure 1 It also includes a guide assembly, which is mounted on the base 100. The guide assembly includes multiple guide blocks 500, each with a guide ramp. The guide blocks 500 are arranged at intervals around the module support area. With the guide blocks 500 in place, when the battery lower housing and water-cooling plate are lowered and placed on the welding fixture, they can be guided and aligned by the guide ramps of the guide blocks 500, achieving automatic alignment.

[0054] In the embodiments, reference is made to Figure 1 and Figure 3 It also includes a corner support assembly 600, which is mounted on the base 100. The corner support assembly 600 includes a corner support block 610 and a lifting driver 620. The lifting driver 620 is used to drive the corner support block 610 to rise and fall. The corner support block 610 is used to support the corner position of the battery module area.

[0055] By setting corner support blocks 610, the corner positions of the support module area can be further stabilized, which facilitates the improvement of welding quality.

[0056] Specifically, the lifting driver 620 is a cylinder working in conjunction with an inclined push block. The cylinder drives the inclined push block to move horizontally, and the inclined push block pushes the corner support block 610 to rise or fall. Optionally, the lifting driver 620 can also be a hydraulic cylinder, etc., to directly drive the corner support block 610 to rise or fall.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A welding fixture for the lower casing of an automotive battery, characterized in that, include: Base (100); At least one module area support assembly (200) is disposed on the base (100). The module area support assembly (200) includes at least two first support bodies (210). Each of the first support bodies (210) is arranged in a horizontal direction. The height of the first support body (210) is adjustable. A module area support surface is formed at the upper end of the first support body (210). A heater is provided on the first support body (210). A welding position support assembly (300) is disposed on the base (100), and a welding position support surface is formed at the upper end of the welding position support assembly (300); A workpiece fixing assembly (400) is disposed on the base (100) and is capable of fixing or releasing the workpiece located on the module area support assembly (200).

2. The welding fixture for the lower casing of an automotive battery according to claim 1, characterized in that: The first support (210) is provided with a workpiece adsorption member (220), and the adsorption side of the workpiece adsorption member (220) is arranged facing upward.

3. The welding fixture for the lower casing of an automotive battery according to claim 1, characterized in that: The module area support assembly (200) includes at least two height adjustment structures (230) arranged horizontally at intervals. The height adjustment structure (230) includes at least two first shims (231) stacked vertically. The two ends of the first support (210) span across the two adjacent height adjustment structures (230).

4. The welding fixture for the lower casing of an automotive battery according to claim 3, characterized in that: One of the first shims (231) of the height adjustment structure (230) is a shim, and the other first shims (231) are shims. The vertical dimension of the shim is greater than that of the shims, and the shims are stacked below the shim.

5. The welding fixture for the lower casing of an automotive battery according to claim 1, characterized in that: The welding position support assembly (300) includes at least two second supports (310), the height of which is adjustable.

6. The welding fixture for the lower casing of an automotive battery according to claim 5, characterized in that: The second support (310) includes at least two second shims (311) stacked vertically, with the upper second shim (311) forming the weld support surface.

7. The welding fixture for the lower casing of an automotive battery according to claim 5, characterized in that: At least two module area support components (200) are provided and arranged at intervals in the horizontal direction. All of the module area support components (200) form a module support area. A portion of the second support body (310) is located between two adjacent module area support components (200), and another portion of the second support body (310) is arranged around the outer periphery of the module support area.

8. The welding fixture for the lower casing of an automotive battery according to claim 7, characterized in that: The workpiece fixing assembly (400) further includes a pair of side-pushing mechanisms (410). The two side-pushing mechanisms (410) are respectively placed on opposite sides of the module support area in the horizontal direction. The side-pushing mechanism (410) includes a side-pushing member (411) and a side-pushing driver (412). The side-pushing member (411) is movably disposed on the base (100) in the horizontal direction. The two side-pushing members (411) in the pair can move closer to or further away from each other. The side-pushing driver (412) is used to drive the corresponding side-pushing member (411) to move.

9. The welding fixture for the lower casing of an automotive battery according to claim 1, characterized in that: The workpiece fixing assembly (400) includes a positioning pin (420) and a positioning driver (430). The positioning pin (420) is movably disposed on the base (100) in the vertical direction, and the positioning driver (430) is disposed on the base (100) and is used to drive the positioning pin (420) to move.

10. The welding fixture for the lower casing of an automotive battery according to claim 1, characterized in that: The workpiece fixing assembly (400) further includes a pressing member (440) and a pressing driver (450). The pressing member (440) is movably disposed on the base (100) and used to press down the workpiece. The pressing member (440) is located on the upper side of the base (100). The pressing driver (450) is disposed on the base (100) and used to drive the pressing member (440) to move.

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