A new energy automobile battery pack connecting piece stamping device and stamping production line

Abstract

The application provides a new energy automobile battery pack connecting piece stamping device and a stamping production line, and belongs to the battery field. The problems of surface scratch of the connecting piece in the stamping process and processing position deviation caused by limited flatness of the base material are solved. The new energy automobile battery pack connecting piece stamping device comprises a support frame, a fixed cylinder body fixedly arranged on the support frame, a linear driving assembly arranged on the upper end of the support frame, an upper die seat arranged below the movable cylinder body at intervals, an elastic piece sleeved on the movable cylinder body, a flow guide chamber, a pressure flow transfer area formed between the flow guide chamber and the lower die seat, a spray pipe, and a hose. The pressure flow transfer area is located in the back pressure area of the second end of the hose. When the movable end moves downward, the gas in the movable cylinder body is first pressurized and discharged from the spray pipe. After the movable end moves to the bottom wall of the movable cylinder body, the movable cylinder body moves to the direction of the compressed elastic piece, the gas in the fixed cylinder body is pressurized and discharged from the hose, and the gas discharged from the hose induces the gas at the back pressure area. It is mainly used for stamping the battery connecting piece.

Description

Technical Field

[0001] This invention belongs to the field of batteries, and in particular relates to a stamping device and stamping production line for battery pack connectors of new energy vehicles. Background Technology

[0002] Battery connectors are conductors used to carry current between components in a battery circuit. Examples include connectors used for electrical connections between individual cells, between battery terminals and battery pack terminals, or between battery pack terminals and external circuits and auxiliary devices. Most connectors are currently manufactured using stamping processes.

[0003] Due to the small size and thinness of the battery connectors, the following problems mainly exist during the stamping process: 1. During stamping, if the working environment is not well-prepared to handle burrs and machining debris, some impurities may remain on the machined surface of the workpiece. These impurities can cause scratches on the surface of the connecting parts during the stamping process, affecting the quality of the workpiece itself.

[0004] 2. During the stamping process, since stamping generally involves multiple stamping steps, after the transfer between workstations, the overall sheet material of the battery connector is very thin. Therefore, if the flatness of the base material is limited, stamping deviation is easily caused, resulting in an uneven overall connector after stamping and a shift in the processing position, thus resulting in poor workpiece quality. Summary of the Invention

[0005] In view of this, the present invention aims to provide a stamping device and stamping production line for battery pack connectors of new energy vehicles, so as to solve the problems of easy scratching of the connector surface during the stamping process and the processing position deviation caused by the limited flatness of the substrate.

[0006] To achieve the above objectives, according to one aspect of the present invention, a stamping device for a new energy vehicle battery pack connector is provided, comprising: The support frame has an overall vertical frame structure, and the fixed cylinder is fixed on the support frame; A linear drive assembly is disposed on the upper end of the support frame, and the linear drive assembly has a movable end; A movable cylinder body is slidably connected to a fixed cylinder body. The movable end away from the linear drive component is slidably connected to the movable cylinder body. A stamping head fixing seat is provided at the movable cylinder body away from the linear drive component. The stamping head fixing seat is used to fix the upper die base. Upper die bases are arranged at intervals below the upper die base. The elastic element is sleeved on the movable cylinder and its two ends are respectively pushed against the bottom wall of the movable cylinder and the fixed cylinder. The flow chamber is connected to the lower mold base to support the lower mold base. A pressure transfer zone is formed between the flow chamber and the lower mold base. The flow chamber is connected to the ejector tube, and one end of the ejector tube is connected to the pressure transfer zone. One end of the nozzle is connected to the air hole provided on the movable cylinder, and the other end faces the space between the upper mold base and the lower mold base. The hose has one end connected to the outlet end of the fixed cylinder, and the other end inserted into the ejector tube with the pressure transfer zone located in the back pressure zone of the second end of the hose. When the movable end moves downward, it first pressurizes the gas in the movable cylinder and discharges it from the nozzle. After the movable end moves to the bottom wall of the movable cylinder, it causes the movable cylinder to move in the direction of compressing the elastic element and pressurizes the gas in the fixed cylinder and discharges it from the hose. The gas discharged from the hose ejects the gas in the back pressure area.

[0007] Furthermore, the elastic element is a spring and its initial deformation force is greater than the maximum resistance value when the movable end moves within the movable cylinder.

[0008] Furthermore, the pressure transfer zone is equipped with a grid.

[0009] Furthermore, the grille is a metal mesh with a mesh diameter of less than 1 mm.

[0010] Furthermore, a piston is provided at the end of the movable end away from the linear drive assembly, and the piston is slidably connected to the movable cylinder body.

[0011] Furthermore, the linear drive component is a hydraulic cylinder.

[0012] Furthermore, a perforated partition is provided in the drainage chamber, and the ejector tube is connected to the pressure transfer zone through the perforated partition.

[0013] Furthermore, multiple slots are spaced apart on both opposite end faces of the lower mold base, and the perforated partition plate is connected to the pressure transfer zone through all the slots.

[0014] According to another aspect of the present invention, a stamping production line is provided, comprising a plurality of stamping devices for the above-mentioned new energy vehicle battery pack connectors arranged at intervals.

[0015] Furthermore, a robotic arm is installed between every two adjacent battery connector stamping devices to transfer the battery connectors.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This device can cause pressure changes in the moving cylinder by moving the linear drive component, so that the gas in the moving cylinder will be discharged from the nozzle. The outlet end of the nozzle faces between the upper and lower mold bases, which can dynamically blow away the surface of the already placed connecting material substrate, so that impurities on the surface of the substrate are blown away, thereby ensuring that the stamping process will not damage the substrate. 2. This device can further actuate the linear drive component to make the movable cylinder move synchronously with the movable end, thereby compressing the gas in the fixed cylinder and forming an ejection effect on the pressure transfer zone. At the same time, thanks to the gas flow path formed by the slotted position and the perforated baffle, the positive pressure acts on the substrate, which cancels out the possible deformation of the substrate. When inspecting after stamping, there will be no processing defects. Uneven parts can be leveled again, which can improve the yield. 3. This device completes the pre-stamping blowing treatment and the pressure covering during stamping in one motion throughout the entire stroke using a linear drive component, avoiding damage to the substrate, and is highly efficient and practical. 4. This device does not require multiple sealing structures, has a simple structure, and the power source is only a linear drive component, which reduces costs and the number of electronic components, resulting in a low failure rate. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a first-view perspective three-dimensional structural diagram of a stamping device for a new energy vehicle battery pack connector according to the present invention; Figure 2 This is a second-view perspective three-dimensional structural diagram of a stamping device for a new energy vehicle battery pack connector according to the present invention; Figure 3 This is a top view of a stamping device for a new energy vehicle battery pack connector according to the present invention; Figure 4 This is a cross-sectional view of a stamping device for a new energy vehicle battery pack connector according to the present invention. Figure 5 This is a schematic diagram of the lower mold base without the model structure described in this invention; Figure 6 This is a schematic diagram of the gas pressure transfer zone of the present invention; Figure 7 This is a schematic diagram of the structure of a stamping production line according to the present invention.

[0018] Linear drive assembly 1; support frame 2; movable end 3; movable cylinder 4; fixed cylinder 5; hose 6; stamping head fixing seat 7; nozzle 8; upper mold base 9; flow chamber 10; lower mold base 11; ejector tube 12; perforated partition 13; piston 14; elastic element 15; pressure transfer zone 16; slot 17. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0020] It should be noted that the descriptions of "left," "right," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this invention are defined based on the orientation or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In the description of this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Referring to the accompanying drawings, this embodiment of the invention provides a stamping device for a new energy vehicle battery pack connector, comprising: The support frame 2 has an overall vertical frame structure, and the fixed cylinder 5 is fixed on the support frame 2; A linear drive assembly 1 is disposed on the upper end of the support frame 2, and the linear drive assembly 1 is provided with a movable end 3; The movable cylinder 4 is slidably connected to the fixed cylinder 5. The movable end 3 is slidably connected to the movable cylinder 4 at the end away from the linear drive component 1. A stamping head fixing seat 7 is provided at the end of the movable cylinder 4 away from the linear drive component 1. The stamping head fixing seat 7 is used to fix the upper die seat 9. Upper die seats 9 are arranged at intervals below the upper die seat 9. The elastic element 15 is sleeved on the movable cylinder 4 and its two ends are respectively pushed against the bottom wall of the movable cylinder 4 and the fixed cylinder 5. When the elastic element 15 is in the relaxed normal state, the upper end face of the stamping head fixing seat 7 is pushed against the intermediate support provided on the support frame 2, thereby forming a limiting support for the stamping head fixing seat 7.

[0023] The flow chamber 10 is connected to the lower mold base 11 to support the lower mold base 11. A pressure transfer zone 16 is formed between the flow chamber 10 and the lower mold base 11. The flow chamber 10 is connected to the ejector tube 12. One end of the ejector tube 12 is connected to the pressure transfer zone 16. One end of the nozzle 8 is connected to the air hole provided on the movable cylinder 4, and the other end faces between the upper mold base 9 and the lower mold base 11. An elbow can be provided at the end of the nozzle 8 facing between the upper mold base 9 and the lower mold base 11. The elbow can change the air outlet position, so that the air outlet position can be adaptively adjusted according to the timing position and processing depth of different substrates, ensuring that it meets most operating conditions and making the device more practical.

[0024] The first end of the hose 6 is connected to the outlet end of the fixed cylinder 5, and the second end is inserted into the ejector tube 12, with the pressure transfer zone 16 located in the back pressure zone of the second end of the hose 6. The hose 6 is specifically selected as a flexible tube, such as a corrugated pipe, to ensure a certain degree of flexibility and toughness, so as not to be easily damaged and to ensure the reliability of use.

[0025] When the movable end 3 moves downward, it first pressurizes the gas in the movable cylinder 4 and discharges it from the nozzle 8. After the movable end 3 moves to the bottom wall of the movable cylinder 4, it causes the movable cylinder 4 to move in the direction of the compression elastic element 15 and pressurizes the gas in the fixed cylinder 5 and discharges it from the hose 6. The gas discharged from the hose 6 ejects the gas in the back pressure area.

[0026] In this embodiment, the elastic element 15 is a spring with an initial deformation force greater than the maximum resistance when the movable end 3 moves within the movable cylinder 4. By setting the initial deformation force of the spring, it is ensured that the spring provides support to the movable cylinder 4 during the initial use phase, keeping the movable cylinder 4 in a fixed state during the initial movement of the movable end 3. This prevents the position of the movable cylinder 4 from changing when the gas inside it is expelled by the piston 14. The gas expelled from the movable cylinder 4 blows away impurities on the surface of the substrate, preventing scratches and other defects caused during the stamping process. The ideal blowing angle is between 40 and 60 degrees, which will not cause displacement to the substrate. When piston 14 contacts the bottom wall of movable cylinder 4, it continues to move downward, causing piston 14 to synchronously drive movable cylinder 4 downward. Elastic element 15 is gradually compressed. This process can release the gas in fixed cylinder 5, so that when the released gas flows in ejector tube 12, it can form an ejection effect on the back pressure area, so that the gas flows downward and acts on the substrate. Since the substrate is a thin sheet, it can correct the deformation of slight curvature, so that the substrate is only attached to the lower die base 11, preventing curvature from affecting the stamping process and avoiding defects such as stamping position deviation.

[0027] In this embodiment, the pressure transfer zone 16 is provided with a grid.

[0028] In this embodiment, the grille is a metal mesh with a mesh diameter of less than 1 mm. This arrangement prevents stamping debris from entering the pressure transfer zone 16. The grille is flush with the upper surface of the drainage chamber 10, facilitating subsequent cleaning, maintenance, and replacement.

[0029] In this embodiment, a piston 14 is provided at the end of the movable end 3 away from the linear drive assembly 1, and the piston 14 is slidably connected inside the movable cylinder 4.

[0030] In this embodiment, the linear drive component 1 is a hydraulic cylinder. Alternatively, an electric cylinder or other linear drive component may be used, selected according to actual needs.

[0031] In this embodiment, a perforated partition 13 is provided in the drainage chamber 10, and the ejector tube 12 is connected to the pressure transfer zone 16 through the perforated partition 13.

[0032] In this embodiment, multiple slots 17 are spaced apart on both opposite end faces of the lower mold base 11, and the perforated partition 13 is connected to the pressure transfer zone 16 through all the slots 17. The slots 17 and the perforated partition 13 form a complete pressure flow path. The purpose of setting slots 17 on only two opposite faces of the lower mold base 11 is to weaken the gas pressure on both sides, so that the pressure can act positively on the substrate and then flow through the slots 17 on both sides. The openings of the perforated partition 13 are concentrated in a circular area, so that the gas forms a laminar flow zone between the slots 17 and the openings of the perforated partition 13. The formation of the laminar flow zone is to prevent excessive gas pressure from introducing debris.

[0033] According to another aspect of the present invention, a stamping production line is provided, comprising a plurality of stamping devices for the above-mentioned new energy vehicle battery pack connectors arranged at intervals.

[0034] In this embodiment, a robotic arm is positioned between every two adjacent battery connector stamping devices. The robotic arm is used to transfer the battery connectors. Existing technology can be used for the robotic arm, and its mode of movement and range can be selected according to actual needs.

[0035] In use, the linear drive assembly 1 drives the movable end 3 to move downward, which in turn drives the piston 14 to move downward. Thanks to the support of the elastic element 15, the movable cylinder 4 is initially in a fixed state. The downward movement of the piston 14 pressurizes the gas in the movable cylinder 4 and discharges it from the nozzle 8, blowing away impurities on the surface of the substrate placed on the lower mold base 11.

[0036] When piston 14 contacts the bottom wall of movable cylinder 4, it drives movable cylinder 4 to move synchronously. Movable cylinder 4 pressurizes and discharges the gas in fixed cylinder 5, causing the gas to be discharged at high speed from ejector tube 12, thereby ejecting the gas in the back pressure zone. Thanks to the setting of the slot 17 and the opening position of the perforated partition 13, the gas forms a positive pressure on the substrate downward, which improves the micro-bending phenomenon of the substrate. After the stamping upper die base 9 completes the stamping, it reaches the maximum stroke of linear drive assembly 1 and the gas in fixed cylinder 5 is emptied. Linear drive assembly 1 drives movable end 3 to reset. During the reset process, elastic element 15 drives movable cylinder 4 to reset. Since no sealing structure is set between movable cylinder 4 and fixed cylinder 5, there is no particularly large resistance during the reset process. If necessary, a sealing structure can be set between movable cylinder 4 and fixed cylinder 5 and necessary return pressure relief holes can be set on fixed cylinder 5. The selection can be made according to actual needs.

[0037] As can be seen from the above description, this application avoids problems such as scratches and processing defects that may occur during the processing of thin-plate connectors by using the single-stroke action of the linear drive component 1.

[0038] The sensors, controllers, and control programs mentioned above are all existing technologies and will not be elaborated upon here.

[0039] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A stamping device for battery pack connectors in new energy vehicles, characterized in that, include: The support frame (2) has an overall vertical frame structure, and the fixed cylinder (5) is fixed on the support frame (2); A linear drive assembly (1) is provided on the upper end of the support frame (2), and the linear drive assembly (1) is provided with a movable end (3). The movable cylinder (4) is slidably connected inside the fixed cylinder (5). The movable end (3) is slidably connected inside the movable cylinder (4) at the end away from the linear drive assembly (1). A stamping head fixing seat (7) is provided at the end of the movable cylinder (4) away from the linear drive assembly (1). The stamping head fixing seat (7) is used to fix the upper die seat (9). Lower die seats (11) are arranged at intervals below the upper die seat (9). The elastic element (15) is sleeved on the movable cylinder (4) and its two ends are respectively pushed against the bottom wall of the movable cylinder (4) and the fixed cylinder (5); The flow chamber (10) is connected to the lower mold base (11) to support the lower mold base (11). A pressure transfer zone (16) is formed between the flow chamber (10) and the lower mold base (11). The ejector tube (12) is located at the bottom of the flow chamber (10) and communicates with the flow chamber (10). One end of the ejector tube (12) is connected to the pressure transfer zone (16). A perforated partition (13) is provided inside the drainage chamber (10), and the ejector tube (12) is connected to the pressure transfer zone (16) through the perforated partition (13); The lower mold base (11) has multiple slots (17) spaced apart on its two opposite sides, and the perforated partition plate (13) is connected to the pressure transfer zone (16) through all the slots (17). The nozzle (8) is connected at one end to the air hole provided on the movable cylinder (4), and at the other end is directed between the upper mold base (9) and the lower mold base (11); The first end of the hose (6) is connected to the outlet end of the fixed cylinder (5), and the second end is inserted into the ejector tube (12) and the pressure transfer zone (16) is located in the back pressure zone of the second end of the hose (6); When the movable end (3) moves downward, it first pressurizes the gas in the movable cylinder (4) and discharges it from the nozzle (8). After the movable end (3) moves to the bottom wall of the movable cylinder (4), it causes the movable cylinder (4) to move towards the compression elastic element (15) and pressurizes the gas in the fixed cylinder (5) and discharges it from the hose (6). The gas discharged from the hose (6) ejects the gas in the back pressure area, causing the gas to exert positive pressure on the substrate placed on the lower mold base (11) downward. The gas is divided into two paths and flows through the slots (17) on both sides of the lower mold base (11).

2. The stamping device for a new energy vehicle battery pack connector according to claim 1, characterized in that: The elastic element (15) is a spring and its initial deformation force is greater than the maximum resistance of the movable end (3) when it moves in the movable cylinder (4).

3. The stamping device for a new energy vehicle battery pack connector according to claim 1, characterized in that: The pressure transfer zone (16) is equipped with a grid.

4. The stamping device for a new energy vehicle battery pack connector according to claim 3, characterized in that: The grille is a metal mesh with a mesh diameter of less than 1 mm.

5. The stamping device for a new energy vehicle battery pack connector according to claim 1, characterized in that: A piston (14) is provided at the end of the movable end (3) away from the linear drive assembly (1), and the piston (14) is slidably connected inside the movable cylinder (4).

6. The stamping device for a new energy vehicle battery pack connector according to claim 5, characterized in that: The linear drive assembly (1) is a hydraulic cylinder.

7. A stamping production line, characterized in that: The invention includes a stamping device for connecting components of a new energy vehicle battery pack, as described in any one of claims 1-6, arranged at multiple intervals.

8. A stamping production line according to claim 7, characterized in that: A robotic arm is installed between every two adjacent battery connector stamping devices. The robotic arm is used to transfer the battery connectors.

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