Shaping device and assembling equipment

Abstract

The embodiment of the utility model provides a shaping device and assembling equipment, and the shaping device comprises a fixing tool with one end configured as a shaping end; and the pressing tool is connected with the shaping end, and when the side, away from the fixing tool, of the pressing tool is extruded, the pressing tool moves along the side close to the fixing tool. The pressing tool is connected with the shaping end of the fixing tool, when the shaping device conducts shaping, the pressing tool is subjected to external force, after the pressing tool moves along the side close to the fixing tool, the shaping end is matched with the pressing tool, tight attachment of a shaped workpiece can be achieved, and finally a gap is eliminated. Multiple reflection of the laser on the to-be-welded surface of the shaped workpiece due to an overlarge gap is avoided, the fusion area is increased, the overheating risk is avoided, and the safety is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a shaping device and assembly equipment. Background Art

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0003] In the development of battery technology, in addition to improving the energy density of batteries, battery safety is also an issue that cannot be ignored. Therefore, how to improve battery safety is a technical problem that needs to be solved urgently in battery technology. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a shaping device and assembly equipment that can ensure compression, avoid the risk of overheating, and improve safety.

[0005] In a first aspect, an embodiment of the present application provides a shaping device, comprising: a fixed tooling, one end of which is configured as a shaping end; a pressing tooling, which is connected to the shaping end, and when the side of the pressing tooling facing away from the fixed tooling is squeezed, part of the structure of the pressing tooling rotates relative to the fixed tooling so that the pressing tooling moves along the side close to the fixed tooling.

[0006] In the above-mentioned implementation process, the clamping tooling is connected to the shaping end of the fixed tooling. When the shaping device performs shaping, the clamping tooling will be subjected to external force, causing the clamping tooling to move along the side close to the fixed tooling. The cooperation between the shaping end and the clamping tooling can achieve a close fit of the shaped workpiece, and finally eliminate the gap, avoid the gap being too large to cause the laser to be reflected multiple times on the surface to be welded of the shaped workpiece, increase the fusion area, avoid the risk of overheating, and improve safety.

[0007] In some embodiments, the pressing tool includes a roller and a gear, the roller is connected to the fixing tool and the gear, and the gear is engaged with the fixing tool.

[0008] In the above implementation process, the roller and the gear are respectively connected to the fixed tooling, and the roller is connected to the gear. When the roller is subjected to external force, the roller can move relative to the fixed tooling with the cooperation of the gear and the fixed tooling, which not only can achieve close fit of the shaped workpiece and ultimately eliminate the gap, but also can avoid damage to the shaped workpiece, thereby improving the product yield.

[0009] In some embodiments, the fixing fixture includes a pressing block and a fixing bracket, the pressing block is connected to the fixing bracket, and the side of the fixing bracket facing away from the pressing block is respectively connected to the roller and the gear.

[0010] In the above-mentioned implementation process, the pressing block is connected to the fixed bracket, and the clamping tool is connected to the fixed bracket, which can ensure that the clamping tool moves along the preset direction during the shaping process of the workpiece being shaped, which is conducive to eliminating the gap between the workpieces being shaped, increasing the fusion area of ​​the workpiece being shaped, and avoiding the risk of overheating.

[0011] In some embodiments, the fixture further comprises a first spring, the first spring being connected to the pressure block and the fixing bracket. By providing the first spring between the pressure block and the fixing bracket, a certain degree of elasticity is maintained between the pressure block and the fixing bracket during the shaping process, thereby preventing damage to the workpiece being shaped and facilitating a close fit of the workpiece.

[0012] In some embodiments, the fixed bracket includes a first bracket and a second bracket, the first bracket is connected to the second bracket, and the second bracket is configured to accommodate at least a portion of the structure of the roller.

[0013] In the above-mentioned implementation process, the second bracket is connected to the roller, and the second bracket is connected to the pressing block through the first bracket, which can ensure that the clamping tool moves along the preset direction during the shaping of the workpiece, which is conducive to eliminating the gap of the workpiece being shaped, increasing the fusion area of ​​the workpiece being shaped, and avoiding the risk of overheating.

[0014] In some embodiments, the fixing bracket further includes a second spring connected between the first bracket and the second bracket. The first spring disposed between the first bracket and the second bracket provides a certain degree of elasticity between the pressing block and the fixing bracket during the shaping process, thereby preventing damage to the shaped workpiece and facilitating a close fit of the shaped workpiece.

[0015] In some embodiments, the shaping device further comprises a pole, one end of which is provided with a surface to be welded, and the surface to be welded is configured as a side of the pole close to the fixing tool and the pressing tool.

[0016] In some embodiments, the surface to be welded is configured in an arc shape, which can reduce the gap, facilitate welding, ensure a good compression state during welding, increase the fusion area, avoid the risk of overheating, and improve safety.

[0017] In some embodiments, the center height of the surface to be welded is higher than the height of its ends, which can reduce the gap, facilitate welding, ensure a good compression state during welding, increase the fusion area, avoid the risk of overheating, and improve safety.

[0018] In some embodiments, the height difference between the center of the surface to be welded and the end thereof is 0-1.2 mm.

[0019] In a second aspect, the present application further provides an assembly device, comprising: a current collector; and a shaping device as described in any one of the above items, wherein the pole of the shaping device is connected to the current collector.

[0020] In the above implementation process, the fixing tool and the pressing tool of the shaping device both press the pole and the current collector, reducing the gap between the pole and the current collector, which is beneficial to the welding between the pole and the current collector, ensuring a good pressing state during welding, increasing the fusion area, avoiding the risk of overheating, and improving safety.

[0021] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by practicing the above-mentioned technology of the present disclosure.

[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic structural diagram of a shaping device provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of a partial structure of a shaping device provided in an embodiment of the present application;

[0026] Figure 3 A schematic structural diagram of an arc pole of a shaping device provided in an embodiment of the present application;

[0027] Figure 4 A schematic structural diagram of another pole of the shaping device provided in an embodiment of the present application.

[0028] Reference numerals

[0029] 100. Fixing fixture; 101. Pressing block; 102. First bracket; 103. Second bracket; 104. First spring; 105. Second spring; 106. Rack; 200. Pressing fixture; 201. Roller; 202. Gear; 300. Pole; 301. Surface to be welded. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0031] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0032] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or point connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0035] Example

[0036] Due to the differences in battery structure design, there is a need to directly connect the multi-layer current collector to the battery cover. Usually, the multi-layer positive and negative current collectors are welded and pressed positively / negatively tightly using ultrasound, and then the multi-layer current collectors are connected to the positive / negative poles inside the cover using laser penetration welding. Usually, a certain fusion area is required during laser welding to meet the flow requirements.

[0037] During the design process, the inventor discovered that, in the current situation, the upper layer of materials to be welded: copper / aluminum current collectors, there are still tiny gaps between the multiple layers of current collectors pre-welded by ultrasonic welding; the lower layer of materials to be welded: high-reflectivity copper / aluminum materials, with smooth and flat surfaces, are at the same horizontal height; tooling: the laser weld mark needs to be completely unobstructed, so the tooling is hollowed out at the weld mark, and the weld mark is surrounded by a U-shaped contact flat pressure head; however, the current collector in the ultrasonic welding area is no longer soft and thin, and has a certain hardness, but insufficient rigidity. When the center is hollowed out and the flat pressure heads on all sides are directly pressed on the ultrasonic welding mark, it can only ensure that the tabs and poles in the direct contact area of ​​the U-shaped flat pressure head are in good contact. There is still a risk of a large gap between the tabs in the laser welding area and the lower pole. For penetration welding, the biggest challenge is the gap between the upper and lower layers of materials to be welded. If the gap is slightly larger, for copper and aluminum materials with high reflectivity, the laser will be reflected multiple times on the surfaces of the upper and lower layers of materials to be welded, and the energy absorbed by the lower layer of material to be welded is greatly reduced, thereby reducing the fusion area between the two layers and causing the risk of overheating of the battery cell. For the penetration welding form of direct connection between multi-layer current collectors and poles, the tolerance for gaps is smaller, so the design needs to be optimized to ensure effective contact between the current collectors and poles.

[0038] In view of this, if Figure 1-Figure 2 As shown, in the first aspect, an embodiment of the present application provides a shaping device, comprising: a fixed tool 100, one end of which is configured as a shaping end; a pressing tool 200, which is connected to the shaping end, and when the side of the pressing tool 200 facing away from the fixed tool 100 is squeezed, part of the structure of the pressing tool 200 rotates relative to the fixed tool 100, so that the pressing tool 200 moves along the side close to the fixed tool 100.

[0039] Exemplarily, the shaping device can be applied to the battery assembly process, wherein the fixing tool 100 and the pressing tool 200 are connected, and the pressing tool 200 can be moved along the up and down directions of the fixing tool 100, so that during the welding process of the battery components, the fixing tool 100 and the pressing tool 200 can directly press the surface of the shaped workpiece (the pole 300 and the current collector), thereby reducing the gap between the shaped workpieces, which is beneficial to welding.

[0040] It is understandable that the number of the pressing tooling 200 includes but is not limited to two, and the two pressing tooling 200 are spaced apart and distributed on opposite sides of the fixing tooling 100. Of course, in other embodiments, four pressing tooling 200 can also be provided.

[0041] In the above-mentioned implementation process, the clamping tool 200 is connected to the shaping end of the fixed tool 100. When the shaping device performs shaping, the clamping tool 200 will be subjected to external force, causing the clamping tool 200 to move along the side close to the fixed tool 100. The cooperation between the shaping end and the clamping tool 200 can achieve a close fit of the shaped workpiece, and finally eliminate the gap, avoiding the gap being too large to cause the laser to be reflected multiple times on the surface to be welded 301 of the shaped workpiece, thereby increasing the fusion area, avoiding the risk of overheating, and improving safety.

[0042] like Figure 1-Figure 2 As shown, the pressing tool 200 includes a roller 201 and a gear 202 . The roller 201 is connected to the fixing tool 100 and the gear 202 . The gear 202 is meshed with the fixing tool 100 .

[0043] Exemplarily, the gear 202 is arranged at the end of the roller 201, so that each roller 201 can correspond to two gears 202, so that after the gear 202 is engaged with the fixed tooling 100, the roller 201 can move along the up and down directions of the fixed tooling 100 through the gear 202 when subjected to external pressure. That is to say, in a natural state, the roller 201 needs to be protruding from the bottom of the fixed tooling 100.

[0044] In the above-mentioned implementation process, the roller 201 and the gear 202 are respectively connected to the fixed tooling 100, and the roller 201 is connected to the gear 202. When the roller 201 is subjected to external force, with the cooperation of the gear 202 and the fixed tooling 100, the roller 201 can move relative to the fixed tooling 100, which can not only achieve close fitting of the shaped workpiece and ultimately eliminate the gap, but also avoid damage to the shaped workpiece, thereby improving the product yield rate.

[0045] In some embodiments, the fixing fixture 100 includes a pressing block 101 and a fixing bracket, the pressing block 101 is connected to the fixing bracket, and the side of the fixing bracket facing away from the pressing block 101 is respectively connected to the roller 201 and the gear 202.

[0046] Exemplarily, the side of the pressing block 101 facing away from the fixing bracket can be used to connect a welding device, wherein the pressing block 101 is provided with a round-shaped opening in the up and down directions, and the round-shaped opening is used by the welding device to laser weld the shaped workpiece.

[0047] It should be noted that a rack 106 is provided at the bottom of the fixing tool 100, and the rack 106 is used to engage with the gear 202, and the rack 106 is configured to be distributed along the up and down directions. The specific length of the rack 106 can be set according to actual conditions and is not specifically limited here.

[0048] In the above-mentioned implementation process, the pressing block 101 is connected to the fixed bracket, and the clamping tool 200 is connected to the fixed bracket. During the shaping process of the workpiece to be shaped, it can ensure that the clamping tool 200 moves along the preset direction, which is conducive to eliminating the gap of the workpiece to be shaped, increasing the fusion area of ​​the workpiece to be shaped, and avoiding the risk of overheating.

[0049] In some embodiments, the fixing fixture 100 further includes a first spring 104, which is connected to the pressure block 101 and the fixing bracket, respectively. The number of the first springs 104 includes, but is not limited to, four. The four first springs 104 are distributed on both sides of the pressure block 101, with two first springs 104 corresponding to each side of the pressure block 101. The specifications of the first springs 104 can be adjusted according to actual conditions. By providing the first spring 104 between the pressure block 101 and the fixing bracket, the pressure block 101 and the fixing bracket have a certain degree of elasticity during the shaping process, thus avoiding damage to the workpiece being shaped and facilitating a close fit of the workpiece being shaped.

[0050] In some embodiments, the fixed bracket includes a first bracket 102 and a second bracket 103 , the first bracket 102 is connected to the second bracket 103 , and the second bracket 103 is configured to accommodate at least a portion of the structure of the roller 201 .

[0051] In the above-mentioned implementation process, the second bracket is connected to the roller 201, and the second bracket 103 is connected to the pressing block 101 through the first bracket 102. During the shaping process of the workpiece to be shaped, it can ensure that the clamping tool 200 moves along the preset direction, which is conducive to eliminating the gap of the workpiece to be shaped, increasing the fusion area of ​​the workpiece to be shaped, and avoiding the risk of overheating.

[0052] In some embodiments, the fixed bracket further includes a second spring 105, which is connected between the first bracket 102 and the second bracket 103. The number of the second springs 105 includes, but is not limited to, four. The four second springs 105 are distributed on both sides of the second bracket 103, with two second springs 105 corresponding to each side of the second bracket 103. The specifications of the second springs 105 can be adjusted according to actual conditions. Generally, the elasticity of the second spring 105 is less than that of the first spring 104. Of course, it is not ruled out that the elasticity of the second spring 105 is greater than or equal to the elasticity of the first spring 104. By providing the first spring 104 between the first bracket 102 and the second bracket 103, the pressing block 101 and the fixed bracket have a certain elasticity during the shaping process, thereby avoiding damage to the workpiece being shaped and facilitating a close fit of the workpiece being shaped.

[0053] like Figure 3-Figure 4 As shown, the shaping device further includes a pole 300 , one end of which is provided with a surface to be welded 301 . The surface to be welded 301 is configured as a side of the pole 300 close to the fixing tool 100 and the pressing tool 200 .

[0054] In some embodiments, the surface to be welded 301 is configured as an arc, for example, the center height of the surface to be welded 301 is higher than the heights of its two sides. This can reduce gaps, facilitate welding, ensure a good compression state during welding, increase the fusion area, avoid the risk of overheating, and improve safety.

[0055] In some embodiments, the center height of the surface to be welded 301 is higher than the height of its ends. For example, in this embodiment, the surface to be welded 301 is configured in a stepped shape, wherein the step junctions may be processed with an arc to form at least a double-layered surface. This can reduce gaps, facilitate welding, ensure a good compression state during welding, increase the fusion area, avoid the risk of overheating, and improve safety.

[0056] In some embodiments, the height difference between the center of the surface to be welded 301 and the end thereof is 0-1.2 mm. For example, the height difference can be set to 0.4 mm, 0.8 mm, 1.2 mm, etc.

[0057] In a second aspect, the present application further provides an assembly device comprising: a current collector; and a shaping device as described above, wherein the electrode 300 of the shaping device is connected to the current collector. Exemplarily, the fixing fixture 100 and the pressing fixture 200 are located on the side of the electrode 300 facing away from the current collector, and both the fixing fixture 100 and the pressing fixture 200 can contact the electrode 300. The present application ensures effective pressing of the current collector and the surface of the electrode 300 by dual optimization of the surface to be welded 301 of the electrode 300, the fixing fixture 100, and the pressing fixture 200.

[0058] During the above-mentioned implementation process, the fixing tool 100 and the pressing tool 200 of the shaping device both press the pole 300 and the current collector, reducing the gap between the pole 300 and the current collector, which is beneficial to the welding between the pole 300 and the current collector, ensuring a good pressing state during welding, increasing the fusion area, avoiding the risk of overheating, and improving safety.

[0059] In all embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms will not be elaborated in the embodiments of the present application.

[0060] It should be understood that the phrases “in this embodiment,” “in an embodiment of the present application,” or “as an optional implementation” mentioned throughout the specification mean that specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, “in this embodiment,” “in an embodiment of the present application,” or “as an optional implementation” appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0061] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0062] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A shaping device, characterized in that: include: A fixed tooling, one end of which is configured as a shaping end; A pressing tool is connected to the shaping end, and when the side of the pressing tool facing away from the fixing tool is squeezed, part of the structure of the pressing tool rotates relative to the fixing tool so that the pressing tool moves along the side close to the fixing tool.

2. The shaping device according to claim 1, characterized in that The pressing tooling includes a roller and a gear, the roller is connected to the fixing tooling and the gear, and the gear is engaged with the fixing tooling.

3. The shaping device according to claim 2, characterized in that The fixing fixture includes a pressing block and a fixing bracket, the pressing block is connected to the fixing bracket, and the side of the fixing bracket facing away from the pressing block is respectively connected to the roller and the gear.

4. The shaping device according to claim 3, characterized in that The fixing fixture further includes a first spring, and the first spring is respectively connected to the pressing block and the fixing bracket.

5. The shaping device according to claim 4, characterized in that The fixed bracket includes a first bracket and a second bracket, the first bracket is connected to the second bracket, and the second bracket is configured to accommodate at least a portion of the structure of the roller.

6. The shaping device according to claim 5, characterized in that The fixing bracket further includes a second spring connected between the first bracket and the second bracket.

7. The shaping device according to any one of claims 1 to 6, characterized in that The shaping device further comprises a pole, one end of which is provided with a surface to be welded, and the surface to be welded is configured as a side of the pole close to the fixing tool and the pressing tool.

8. The shaping device according to claim 7, characterized in that The surface to be welded is configured in an arc shape.

9. The shaping device according to claim 7, characterized in that The center height of the surface to be welded is higher than the height of its end portions.

10. The shaping device according to claim 9, characterized in that The height difference between the center of the surface to be welded and the end thereof is 0-1.2 mm.

11. An assembly device, characterized in that: include: current collector; and The shaping device according to any one of claims 1 to 10, wherein the pole of the shaping device is connected to the current collector.

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