A battery core processing device and a processing method thereof

Abstract

The present invention relates to the technical field of battery cell hot pressing equipment, and in particular to a battery cell processing device and a processing method thereof, comprising a base frame, wherein four support columns are fixed on the top of the base frame, and the tops of all the support columns are commonly fixedly connected to a top plate, and a controller is fixedly installed on the top surface of the top plate, a first hot pressing component is arranged on the top of the base frame, and a second hot pressing component is arranged on the bottom of the top plate; by setting a bending and smoothing component, the bending and smoothing component first contacts with the battery cell, and as the second hot pressing component continues to move downward, the two groups of top pressing components will slide outward along the top of the battery cell after being subjected to force, thereby facilitating hot pressing and straightening the bent parts of the edges of the battery cell in the process of the two groups of top pressing components moving away from each other, thereby facilitating reducing the occurrence of wrinkles and inward curling of the battery cell during the hot pressing and shaping process.

Description

Technical Field

[0001] The present invention relates to the field of battery core hot pressing equipment, and in particular to a battery core processing device and a processing method thereof. Background Art

[0002] Lithium-ion batteries have the characteristics of large capacity and long cycle life. Especially when used in handheld electronic products or electric vehicles, the safety performance requirements for lithium-ion batteries are very high. The manufacturing process of lithium-ion batteries is complex, and various factors have a great impact on the safety performance of the battery.

[0003] The prior art discloses invention patents for some battery cell processing. The Chinese patent with application number 202310263139.4 discloses a hot pressing and shaping device and process for lithium battery cells, including a hot pressing device, one end of the hot pressing device is fixedly connected to an operating box, a plurality of control switches are installed on the operating box, a plurality of evenly distributed sliding rods are fixedly connected to the hot pressing device, and an operating panel is installed on the hot pressing device, and a pair of limit bars are installed in the operating panel.

[0004] However, the above-mentioned hot pressing equipment still has certain defects when in use. Hot pressing of battery cells by hot pressing plates is a commonly used method in this field. However, in the process of hot pressing of battery cells by hot pressing plates, the battery cells may be slightly bent at the edges during the processing. At this time, if the battery cells are directly hot pressed, the bent parts may be wrinkled and curled inward during the shaping process of the hot pressing plates when in contact with the hot pressing plates, which will affect the flatness of the hot pressing of the battery cells, and further affect the yield rate of the cylindrical battery cells. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a battery core processing device and a processing method thereof.

[0006] In a first aspect, the present invention provides a battery core processing device, comprising a base frame, four support columns are fixed on the top of the base frame, a top plate is fixedly connected to the tops of all the support columns, a controller is fixedly installed on the top surface of the top plate, a first hot pressing assembly is arranged on the top of the base frame, a second hot pressing assembly is arranged on the bottom of the top plate, and further comprising:

[0007] A detection unit, used for obtaining pressure information;

[0008] Two sets of bending and smoothing components are used to straighten and smooth the raised ends of the battery cells;

[0009] Two sets of supporting mechanisms, both arranged on the top of the base frame, are used to provide support for the extended part of the bending and smoothing assembly;

[0010] Two sets of top pressing components are both arranged at the bottom of the top plate, and are used to perform hot pressing and shaping on the battery cells straightened by the bending and smoothing components after the detection unit obtains the pressure information;

[0011] Among them, through the setting of the bending and smoothing component, the bending and smoothing component will first contact the battery cell, and as the second hot pressing component continues to move downward, the two groups of top pressing components will slide outward along the top of the battery cell after being subjected to force, and the heat will be transferred to the top pressing component through heat transfer, so that the top pressing component itself has a certain temperature, which is conducive to hot pressing and straightening the bent edges of the battery cell in the process of the two groups of top pressing components moving away from each other, thereby helping to reduce wrinkles and inward curling of the battery cell during the hot pressing and shaping process.

[0012] Preferably, the first hot pressing assembly comprises:

[0013] A support frame, fixedly mounted on the top of the base frame;

[0014] A first hot pressing plate, fixedly mounted on the top of the support frame;

[0015] The second hot pressing assembly comprises:

[0016] A first pushing member is fixedly mounted on the top of the top plate;

[0017] The second hot pressing plate is fixedly mounted on the telescopic end of the first pushing member.

[0018] Preferably, the bending and smoothing component comprises:

[0019] Two shafts are rotatably connected to two side walls of the second hot pressing plate respectively;

[0020] Two rotating plates are respectively fixedly connected to ends of the two shafts that are away from each other;

[0021] Two first torsion springs are respectively fixedly connected between the side wall of the second hot pressing plate and the rotating plate at corresponding positions, and the two first torsion springs are respectively rotatably connected to the outer walls of the two shafts;

[0022] A rotating shaft, fixedly connected between the two rotating plates;

[0023] The roller pressing cylinder is rotatably connected to the outer wall of the rotating shaft.

[0024] Preferably, it also includes:

[0025] Two second torsion springs are respectively fixedly connected between the rotating plate and the rolling cylinder, and the two second torsion springs are both sleeved on the outer wall of the rotating shaft;

[0026] Among them, by arranging the second torsion spring, the rolling cylinder accumulates force during the rolling process of the top of the battery cell, so that the rolling cylinder always applies an outward thrust to the battery cell under the action of the second torsion spring, so as to better flatten the top bend of the battery cell. On the other hand, when the rolling cylinder moves to the top of the supporting mechanism, the second torsion spring will release the spring force after the rolling cylinder loses the limiting support, and the spring force will push the rolling cylinder to rotate counterclockwise, which is beneficial to use the rotation of the rolling cylinder to rotate and smooth the outer edge of the battery cell again, and also to limit the edge of the battery cell during the downward movement of the top pressing assembly.

[0027] Preferably, the top pressing assembly comprises:

[0028] A second pushing member, fixedly connected to the top of the top plate;

[0029] The third hot pressing plate is fixedly connected to the telescopic end of the second pushing member.

[0030] Preferably, it also includes:

[0031] The electromagnet is fixedly mounted on the top of the third hot pressing plate. When the third hot pressing plate moves downward and makes the third hot pressing plate and the bottom of the second hot pressing plate be in the same plane, the electromagnet is used to magnetically limit the roller pressing cylinder.

[0032] Preferably, the supporting mechanism comprises:

[0033] An extension plate, fixedly mounted on the top of the base frame through a support, and the height of the extension plate is the same as that of the first hot pressing plate;

[0034] Wherein, a smooth film is fixedly installed on the surface of the extension plate.

[0035] Preferably, it also includes:

[0036] A sliding hot pressing plate, slidably connected to the bottom of the third hot pressing plate;

[0037] A connecting block fixedly connected to the side wall of the sliding hot pressing plate;

[0038] An inclined surface is provided on a side of the connecting block close to the second hot pressing plate;

[0039] An elastic member, fixedly connected between the connecting block and the third hot pressing plate through a support plate;

[0040] The push rod is fixedly connected to the side wall of the second hot pressing plate through a connecting plate.

[0041] In a second aspect, a processing method of a battery core processing device is provided, the processing method comprising the following steps:

[0042] The controller acquires the pressure information acquired by the detection unit, wherein the pressure information is generated after the detection unit detects the pressure information;

[0043] The controller generates first control information according to the pressure information, and the first control information is used to control the second pushing member to start pushing out;

[0044] The controller sends the first control information to the second pusher to control the second pusher to push the third hot pressing plate to perform hot pressing on the battery cell.

[0045] Preferably, it also includes:

[0046] The controller generates second control information according to the work completion information of the second pusher;

[0047] The controller sends the second control information to the electromagnet to control the electromagnet to be energized to generate magnetism and magnetically attract the roller pressure cylinder.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] 1. The present invention arranges a bending and smoothing component so that the second hot pressing component will drive the bending and smoothing component to move downward during its downward movement, and the bending and smoothing component will first contact the battery cell, and as the second hot pressing component continues to move downward, the two groups of top pressing components will be subjected to force and slide outward along the top of the battery cell. At this time, during the heating of the second hot pressing component, heat will be transferred to the top pressing component through heat transfer, so that the top pressing component itself has a certain temperature, which is beneficial to hot-pressing and straightening the bent edges of the battery cell in the process of the two groups of top pressing components moving away from each other, thereby helping to reduce wrinkles and inward curling of the battery cell during the hot pressing and shaping process.

[0050] 2. The present invention arranges the second torsion spring so that the rolling cylinder accumulates force during the rolling process of the top of the battery cell, so that the rolling cylinder always applies an outward thrust to the battery cell under the action of the second torsion spring, so as to better flatten the top bend of the battery cell. On the other hand, when the rolling cylinder moves to the top of the supporting mechanism, the second torsion spring will release the spring force after the rolling cylinder loses the limiting support, and the spring force will push the rolling cylinder to rotate counterclockwise, which is beneficial to rotate and smooth the outermost edge of the battery cell again during the rotation of the rolling cylinder, and also helps to limit the edge of the battery cell during the downward movement of the top pressure assembly.

[0051] 3. The present invention, through the setting of the electromagnet, controls the electromagnet to generate magnetism by powering on, and utilizes the strong magnetism generated by the electromagnet to magnetically attract the roller cylinder. Subsequently, after the hot pressing and shaping of the battery cell is completed, the controller controls the first pushing member and the second pushing member to return synchronously. Therefore, after the electromagnet limits the roller cylinder by adsorption, it is helpful to avoid the situation where the roller cylinder returns under the action of the first torsion spring and causes damage to the battery cell. By positioning the roller cylinder, it is also helpful for the operator to observe the flattening situation at the edge of the battery cell, and then decide whether to release the elastic force of the second torsion spring to push the edge of the battery cell, which is helpful to reduce the risk of damage to the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the processing method of the present invention.

[0053] Figure 2 The overall structure of the processing device of the present invention is shown in FIG. Figure 1 .

[0054] Figure 3 The overall structure of the processing device of the present invention is shown in FIG. Figure 2 .

[0055] Figure 4 The overall structure of the processing device of the present invention is shown in FIG. Figure 3 .

[0056] Figure 5 The overall structure of the processing device of the present invention is shown in FIG. Figure 4 .

[0057] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0058] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0059] Figure 8 For the present invention Figure 5 Schematic diagram of the enlarged structure at point C in the middle.

[0060] Fig. 9 For the present invention Figure 6 Schematic diagram of the enlarged structure at D in the middle.

[0061] Fig.10 It is a schematic structural diagram of the connection between the first hot pressing plate and the first electric push rod of the present invention.

[0062] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure at E in the middle.

[0063] In the figure: 1. base frame; 2. support column; 3. top plate; 4. controller; 5. support frame; 6. first hot pressing plate; 7. first pushing member; 8. second hot pressing plate; 9. shaft; 10. rotating plate; 11. first torsion spring; 12. rotating shaft; 13. roller cylinder; 14. inclined plane; 15. second torsion spring; 16. second pushing member; 17. support column; 18. third hot pressing plate; 19. electromagnet; 20. extension plate; 22. sliding hot pressing plate; 23. connecting block; 24. elastic member; 25. support plate; 26. top rod; 27. connecting plate. DETAILED DESCRIPTION

[0064] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0065] Application scenarios: In the prior art, hot pressing of battery cells by hot pressing plates is a commonly used method in this field. However, in the process of hot pressing battery cells by hot pressing plates, the battery cells may be slightly bent at the edges during the processing. At this time, if the battery cells are directly hot pressed, the bent parts may be wrinkled and curled inward during the shaping process of the hot pressing plates when in contact with the hot pressing plates, which will affect the flatness of the hot pressing of the battery cells and further affect the yield of the cylindrical battery cells.

[0066] like Figures 2 to 11 The battery cell processing device shown includes a base frame 1, four support columns 2 are fixed on the top of the base frame 1, a top plate 3 is fixedly connected to the top of all the support columns 2, a controller 4 is fixedly installed on the top surface of the top plate 3, a first hot pressing assembly is arranged on the top of the base frame 1, and a second hot pressing assembly is arranged on the bottom of the top plate 3, and further includes:

[0067] A detection unit, used for obtaining pressure information;

[0068] Two sets of bending and smoothing components are used to straighten and smooth the raised ends of the battery cells;

[0069] Two sets of supporting mechanisms are both arranged on the top of the base frame 1, and are used to provide support for the extended part of the bending and smoothing assembly;

[0070] Two sets of top pressing components are both arranged at the bottom of the top plate 3, and are used to hot-press and shape the battery cells after the bending and smoothing components are pressed straight, after the detection unit obtains the pressure information;

[0071] Specifically, the battery cell that needs to be hot-pressed and formed is placed at a specified position between the first hot-pressing assembly and the second hot-pressing assembly, and then the operator controls the first hot-pressing assembly and the second hot-pressing assembly to start heating through the controller 4. After heating to the specified temperature, the second hot-pressing assembly is controlled to move downward. During the downward movement of the second hot-pressing assembly, the bending and smoothing assembly will be driven to move downward, and the bending and smoothing assembly will first contact the battery cell, and as the second hot-pressing assembly continues to move downward, the two groups of top-pressing assemblies will be subjected to force and slide outward along the top of the battery cell. At this time, during the heating of the second hot-pressing assembly, heat will be transferred to the top-pressing assembly through heat transfer, so that the top-pressing assembly itself has a certain temperature, which is conducive to hot-pressing and straightening the curved parts of the battery cell when the two groups of top-pressing assemblies move away from each other, thereby helping to reduce the occurrence of wrinkles and inward curling of the battery cell during the hot-pressing and forming process;

[0072] As the two sets of top-pressing components move away from each other, they will gradually slide out from the top of the battery cell and then move to the top-holding mechanism to be supported by the top-holding mechanism, thereby helping to avoid damage to the battery cell itself after the top-pressing components lose support.

[0073] As a further embodiment, the first hot pressing assembly includes:

[0074] A support frame 5 is fixedly mounted on the top of the base frame 1;

[0075] The first hot pressing plate 6 is fixedly mounted on the top of the supporting frame 5;

[0076] The second hot pressing assembly includes:

[0077] The first pusher 7 is fixedly mounted on the top of the top plate 3;

[0078] The second hot pressing plate 8 is fixedly mounted on the telescopic end of the first pushing member 7;

[0079] Specifically, the controller 4 controls the first hot pressing plate 6 and the second hot pressing plate 8 to start heating. After the heating is completed, the controller 4 controls the first pushing member 7 to start pushing out, and the first pushing member 7 pushes the second hot pressing plate 8 to move downward, thereby hot pressing and shaping the battery cell through the first hot pressing plate 6 and the second hot pressing plate 8.

[0080] As an optional implementation, the first pusher 7 is specifically a first electric push rod or a cylinder.

[0081] As a further embodiment, the bending and smoothing component includes:

[0082] Two shafts 9 are rotatably connected to the two side walls of the second hot pressing plate 8;

[0083] Two rotating plates 10 are respectively fixedly connected to ends of the two shafts 9 that are away from each other;

[0084] Two first torsion springs 11 are respectively fixedly connected between the side wall of the second hot pressing plate 8 and the rotating plate 10 at corresponding positions, and the two first torsion springs 11 are respectively rotatably connected to the outer walls of the two shafts 9;

[0085] A rotating shaft 12 is fixedly connected between the two rotating plates 10;

[0086] A roller cylinder 13 is rotatably connected to the outer wall of the rotating shaft 12;

[0087] Specifically, during the downward movement of the second hot pressing plate 8, the shaft 9 drives the rotating plate 10 to move downward, and the rotating plate 10 drives the rolling cylinder 13 to move downward through the rotating shaft 12. After the rolling cylinder 13 moves downward and contacts the battery cell, as the second hot pressing plate 8 continues to move downward, the two rolling cylinders 13 will be folded outward with the shaft 9 as the axis under the action of the thrust, and during the heating process of the second hot pressing plate 8, the heat will be transferred to the rolling cylinder 13, so that the rolling cylinder 13 itself generates a certain temperature, and then the rolling cylinder 13 moves toward the edge of the battery cell. During the process, the bent parts of the battery cell will be rolled and straightened. As the second hot pressing plate 8 continues to move downward, the rolling cylinder 13 will gradually separate from the battery cell and move to the supporting mechanism. At this time, the rolling cylinder 13 moves to the edge of the battery cell and contacts its edge, which is conducive to limiting the battery cell after rolling and preventing the edge of the battery cell from shrinking after being rolled by the rolling cylinder 13. Subsequently, the second hot pressing plate 8 will hot-press and shape the straightened battery cell to prevent wrinkles in the battery cell caused by direct downward pressure.

[0088] After the second hot pressing plate 8 completes pressing of the battery cell, the controller 4 controls the top pressing assembly to move downward to press down the gap between the second hot pressing plate 8 and the rolling cylinder 13, which is beneficial for the top pressing assembly to perform secondary hot pressing and shaping on the curved part of the edge of the battery cell after the rolling cylinder 13 completes rolling of the surface of the battery cell, thereby facilitating rapid hot pressing and shaping of the battery cell.

[0089] As a further embodiment, it also includes:

[0090] Two second torsion springs 15 are respectively fixedly connected between the rotating plate 10 and the rolling cylinder 13, and the two second torsion springs 15 are both sleeved on the outer wall of the rotating shaft 12;

[0091] Specifically, in the above embodiment, it is mentioned that the battery cell is rolled and straightened by the rolling cylinder 13. However, after the rolling cylinder 13 leaves the battery cell, during the period when the top pressing assembly moves downward, because the rolling cylinder 13 is rotationally connected to the rotating shaft 12, the edge of the battery cell may still be slightly warped.

[0092] Therefore, by arranging the second torsion spring 15 between the rotating plate 10 and the rolling cylinder 13, on the one hand, the rolling cylinder 13 accumulates force during the rolling process on the top of the battery cell, so that the rolling cylinder 13 always applies an outward thrust to the battery cell under the action of the second torsion spring 15, so as to better flatten the top bend of the battery cell; on the other hand, when the rolling cylinder 13 moves to the top of the supporting mechanism, after the rolling cylinder 13 loses its limiting support, the second torsion spring 15 will release the spring force, and under the action of the spring force, the rolling cylinder 13 will be pushed to rotate counterclockwise, which is conducive to rotating and smoothing the outermost edge of the battery cell again during the rotation of the rolling cylinder 13, and is also conducive to limiting the edge of the battery cell during the downward movement of the top pressure assembly.

[0093] As a further embodiment, the top pressing assembly includes:

[0094] The second pusher 16 is fixedly connected to the top of the top plate 3;

[0095] The third hot pressing plate 18 is fixedly connected to the telescopic end of the second pushing member 16;

[0096] Specifically, the controller 4 controls the second pusher 16 to start pushing out, and the second pusher 16 pushes the third hot pressing plate 18 to move downward, so that the hot pressing plate performs hot pressing and shaping on the smoothed battery cell.

[0097] As an optional embodiment, the second pushing member 16 is specifically a second electric push rod or a hydraulic rod.

[0098] As a further embodiment, it also includes:

[0099] The electromagnet 19 is fixedly mounted on the top of the third hot pressing plate 18. When the third hot pressing plate 18 moves downward and makes the third hot pressing plate 18 and the bottom of the second hot pressing plate 8 in the same plane, the electromagnet 19 is used to magnetically limit the roller pressing cylinder 13;

[0100] Specifically, in the above embodiment, it is mentioned that the second torsion spring 15 is provided so that the rolling cylinder 13 releases the spring force after moving to the edge to drive the rolling cylinder 13 to rotate so as to flatten the bend at the edge of the battery cell. However, after the pushing is completed, when the first pusher 7 drives the second hot pressing plate 8 to return, if the flush state of the rolling cylinder 13 and the second hot pressing plate 8 is not maintained, the rolling cylinder 13 will be driven to return under the action of the first torsion spring 11, which may cause damage to the battery cell after the hot pressing shaping is completed;

[0101] Therefore, by setting the electromagnet 19, when the second pushing member 16 pushes the third hot pressing plate 18 to hot-press the gap between the second hot pressing plate 8 and the rolling cylinder 13, the controller 4 controls the electromagnet 19 to energize and generate magnetism, and uses the strong magnetism generated by the electromagnet 19 to magnetically attract the rolling cylinder 13. Subsequently, after the hot pressing and shaping of the battery cell is completed, the controller 4 controls the first pushing member 7 and the second pushing member 16 to return to their positions synchronously, so that after the electromagnet 19 adsorbs and limits the rolling cylinder 13, it is helpful to avoid the situation in which the rolling cylinder 13 returns to its original position under the action of the first torsion spring 11 and damages the battery cell. By positioning the rolling cylinder 13, it is also helpful for the operator to observe the flattening situation at the edge of the battery cell, and then decide whether to release the elastic force of the second torsion spring 15 to push the edge of the battery cell, which is helpful to reduce the risk of damage to the battery cell.

[0102] As a further embodiment, the holding mechanism includes:

[0103] The extension plate 20 is fixedly mounted on the top of the base frame 1 through the support 17, and the height of the extension plate 20 is the same as that of the first hot pressing plate 6;

[0104] Wherein, a smooth film is fixedly installed on the surface of the extension plate 20;

[0105] Specifically, by providing an extension plate 20 at the end of the first hot pressing plate 6, the rolling cylinder 13 is supported by the extension plate 20 when it moves outward to separate from the battery cell, so as to help avoid the rolling cylinder 13 from returning to its original position, and by providing a smooth film on the surface of the extension plate 20, the friction between the rolling cylinder 13 and the rolling cylinder 13 is reduced, which is conducive to better rotation of the rolling cylinder 13 under the action of the spring force, so as to smooth the edges of the battery cell.

[0106] As an optional implementation, the detection unit includes a plurality of pressure sensors, and all of the pressure sensors are fixedly mounted on the top of the extension plate 20 .

[0107] As a further embodiment, it also includes:

[0108] A sliding hot pressing plate 22 is slidably connected to the bottom of the third hot pressing plate 18;

[0109] A connecting block 23, fixedly connected to the side wall of the sliding hot pressing plate 22;

[0110] The inclined surface 14 is provided on a side of the connecting block 23 close to the second hot pressing plate 8;

[0111] The elastic member 24 is fixedly connected between the connecting block 23 and the third hot pressing plate 18 through the support plate 25;

[0112] The top rod 26 is fixedly connected to the side wall of the second hot pressing plate 8 through the connecting plate 27;

[0113] Specifically, the third hot pressing plate 18 will drive the sliding hot pressing plate 22 to move downward during its downward movement, and the battery cell will be hot pressed by the sliding hot pressing plate 22. In the process of the sliding hot pressing plate 22 moving downward, the connecting block 23 will be driven downward by the connecting block 23. The yield surface on the connecting block 23 will move downward to a predetermined position and contact the top rod 26. Then, the sliding hot pressing plate 22 will be pushed toward the extension plate 20 on the left and right sides of the inclined surface. Therefore, the two sliding hot pressing plates 22 will move slightly away from each other to smooth the surface of the battery cell, thereby reducing the appearance of wrinkles on the overall surface of the battery cell.

[0114] As an optional implementation, the elastic member 24 is specifically an elastic telescopic rod or an elastic rod having the same function as an elastic telescopic rod.

[0115] like Figure 1 A processing method for a battery core processing device is shown, and the processing method comprises the following steps:

[0116] The controller 4 obtains the pressure information obtained by the detection unit, and the pressure information is generated after the detection unit detects the pressure information;

[0117] The controller 4 generates first control information according to the pressure information, and the first control information is used to control the second pusher 16 to start pushing out;

[0118] The controller 4 sends the first control information to the second pusher 16 to control the second pusher 16 to push the third hot pressing plate 18 to perform hot pressing on the battery cell.

[0119] As an optional implementation, it also includes:

[0120] The controller 4 generates the second control information according to the work completion information of the second pusher 16;

[0121] The controller 4 sends the second control information to the electromagnet 19 to control the electromagnet 19 to be energized to generate magnetism to magnetically attract the roller pressing cylinder 13 .

[0122] Working principle of the present invention:

[0123] The battery cell that needs to be hot-pressed and formed is placed at a designated position between the first hot-pressing assembly and the second hot-pressing assembly, and then the operator controls the first hot-pressing assembly and the second hot-pressing assembly to start heating through the controller 4. After heating to the designated temperature, the second hot-pressing assembly is controlled to move downward. During the downward movement of the second hot-pressing assembly, the bending and smoothing assembly will be driven to move downward, and the bending and smoothing assembly will first contact the battery cell, and as the second hot-pressing assembly continues to move downward, the two groups of top-pressing assemblies will be subjected to force and slide outward along the top of the battery cell. At this time, during the heating of the second hot-pressing assembly, heat will be transferred to the top-pressing assembly through heat transfer, so that the top-pressing assembly itself has a certain temperature, which is conducive to hot-pressing and straightening the curved parts of the battery cell when the two groups of top-pressing assemblies move away from each other, thereby helping to reduce the wrinkles and inward curling of the battery cell during the hot-pressing and forming process;

[0124] As the two sets of top-pressing components move away from each other, they will gradually slide out from the top of the battery cell and then move to the top-holding mechanism to be supported by the top-holding mechanism, thereby helping to avoid damage to the battery cell itself after the top-pressing components lose support.

[0125] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A battery cell processing device, comprising a base frame (1), four support columns (2) are fixed on the top of the base frame (1), a top plate (3) is fixedly connected to the tops of all the support columns (2), a controller (4) is fixedly mounted on the top surface of the top plate (3), a first hot pressing assembly is arranged on the top of the base frame (1), and a second hot pressing assembly is arranged on the bottom of the top plate (3), characterized in that: Also includes: A detection unit, used for obtaining pressure information; Two sets of bending and smoothing components are used to straighten and smooth the raised ends of the battery cells; Two sets of supporting mechanisms, both arranged on the top of the base frame (1), are used to provide support for the extended portion of the bending and smoothing assembly; Two sets of top pressing components are both arranged at the bottom of the top plate (3) and are used to perform hot pressing and shaping on the battery cells straightened by the bending and smoothing components after the detection unit obtains the pressure information; The first hot pressing assembly comprises: A support frame (5) fixedly mounted on the top of the base frame (1); A first hot pressing plate (6) is fixedly mounted on the top of the support frame (5); The second hot pressing assembly comprises: A first pushing member (7) is fixedly mounted on the top of the top plate (3); A second hot pressing plate (8) fixedly mounted on the telescopic end of the first pushing member (7); The bending and smoothing component comprises: Two shafts (9) are rotatably connected to two side walls of the second hot pressing plate (8); Two rotating plates (10) are respectively fixedly connected to ends of the two shafts (9) that are away from each other; Two first torsion springs (11) are respectively fixedly connected between the side wall of the second hot pressing plate (8) and the rotating plate (10) at corresponding positions, and the two first torsion springs (11) are respectively rotatably connected to the outer walls of the two shafts (9); A rotating shaft (12) fixedly connected between the two rotating plates (10); A roller cylinder (13) rotatably connected to the outer wall of the rotating shaft (12); Also includes: Two second torsion springs (15) are respectively fixedly connected between the rotating plate (10) and the rolling cylinder (13), and the two second torsion springs (15) are both sleeved on the outer wall of the rotating shaft (12).

2. The battery core processing device according to claim 1, characterized in that: The top pressure assembly comprises: A second pushing member (16) is fixedly connected to the top of the top plate (3); The third hot pressing plate (18) is fixedly connected to the telescopic end of the second pushing member (16).

3. The battery core processing device according to claim 2, characterized in that: Also includes: The electromagnet (19) is fixedly mounted on the top of the third hot pressing plate (18). When the third hot pressing plate (18) moves downward and makes the third hot pressing plate (18) and the bottom of the second hot pressing plate (8) be in the same plane, the electromagnet (19) is used to magnetically limit the rolling cylinder (13).

4. The battery core processing device according to claim 3, characterized in that: The supporting mechanism comprises: An extension plate (20) is fixedly mounted on the top of the base frame (1) via a support (17), and the height of the extension plate (20) is the same as that of the first hot pressing plate (6); Wherein, a smooth film is fixedly mounted on the surface of the extension plate (20).

5. The battery core processing device according to claim 4, characterized in that: Also includes: A sliding hot pressing plate (22) slidably connected to the bottom of the third hot pressing plate (18); A connecting block (23) fixedly connected to a side wall of the sliding hot pressing plate (22); An inclined surface (14) is provided on a side of the connecting block (23) close to the second hot pressing plate (8); An elastic member (24) is fixedly connected between the connecting block (23) and the third hot pressing plate (18) via a support plate (25); The push rod (26) is fixedly connected to the side wall of the second hot pressing plate (8) via a connecting plate (27).

6. A processing method of a battery core processing device, applicable to a battery core processing device as claimed in any one of claims 3 to 5, characterized in that: The processing method comprises the following steps: The controller (4) obtains pressure information obtained by the detection unit, wherein the pressure information is generated after the detection unit detects the pressure information; The controller (4) generates first control information according to the pressure information, and the first control information is used to control the second pushing member (16) to start pushing out; The controller (4) sends the first control information to the second pushing member (16) to control the second pushing member (16) to push the third hot pressing plate (18) to perform hot pressing on the battery cell.

7. A processing method for a battery core processing device according to claim 6, characterized in that: Also includes: The controller (4) generates second control information according to the work completion information of the second pushing member (16); The controller (4) sends the second control information to the electromagnet (19) to control the electromagnet (19) to be energized to generate magnetism and magnetically attract the roller pressing cylinder (13).

Images