A hot riveting device for lithium battery shell

Abstract

The utility model relates to the technical field of battery production, and discloses a lithium battery shell hot riveting device, including a shell conveying mechanism, a soft plate pressure-keeping mechanism and a hot riveting mechanism, wherein the soft plate pressure-keeping mechanism and the hot riveting mechanism are arranged in sequence along the conveying direction of the shell conveying mechanism; the soft plate pressure-keeping mechanism is used to maintain the pressure of the soft plate of the protection plate nested on the shell rivet, and the hot riveting mechanism is used to perform hot pressing molding of the shell rivet. The utility model has the following technical effects: by setting a soft plate pressure-keeping mechanism to maintain the pressure of the soft plate of the protection plate nested on the shell rivet, the soft plate of the protection plate can be effectively prevented from popping out of the rivet during the conveying process or the shell hot riveting process, thereby improving the quality and orderliness of the hot riveting operation, and facilitating improving the qualified rate of the product.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production, and in particular relates to a lithium battery shell hot riveting device. Background Art

[0002] The hot riveting process is to heat the rivet head to make it denatured and melted, reduce its hardness, and then apply pressure to the rivet head to shape it, so as to achieve the connection and fixation between structures. The hot riveting process is widely used in aerospace, automobile manufacturing and battery products and other production fields. For example, in the production process of wearable soft-board lithium batteries, the lithium battery shell needs to be hot-riveted in order to achieve the connection and fixation of the protective board soft board on the lithium battery shell.

[0003] Since the soft board of the protection plate has low hardness and is not easy to shape, it will be in an open state in the natural state. Therefore, even if the soft board of the protection plate has been nested on the rivet before the hot riveting operation, the soft board of the protection plate may pop out of the rivet, which not only affects the orderly progress of the hot riveting operation, but also affects the quality of the hot riveting operation and increases the defective rate of the product. Utility Model Content

[0004] In order to solve the shortcomings of the prior art, the utility model provides a lithium battery shell hot riveting equipment, which maintains the pressure of the soft plate of the protection plate nested on the shell rivet by setting a soft plate pressure maintaining mechanism, thereby effectively preventing the soft plate of the protection plate from popping out from the rivet during the transportation process or the shell hot riveting process, thereby improving the quality and orderliness of the hot riveting operation, and facilitating improving the qualified rate of the product.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] The utility model provides a lithium battery shell hot riveting device, comprising a shell conveying mechanism, a soft plate pressure holding mechanism and a hot riveting mechanism, wherein the soft plate pressure holding mechanism and the hot riveting mechanism are arranged in sequence along the conveying direction of the shell conveying mechanism;

[0007] The soft plate pressure-maintaining mechanism is used for maintaining the pressure of the soft plate of the protection plate nested on the shell rivet, and the hot riveting mechanism is used for hot-pressing the shell rivet.

[0008] As a further description of the technical solution of the utility model, the soft board pressure-maintaining mechanism includes a first driving module and a pressure-maintaining module connected to the driving end of the first driving module.

[0009] As a further description of the technical solution of the utility model, the pressure-maintaining module includes a pressure-maintaining block for pressing the soft board of the protection board.

[0010] As a further description of the technical solution of the utility model, a rivet avoidance hole is provided on the pressure-maintaining block at a position corresponding to the rivet of the housing, into which the rivet can be inserted. By providing the rivet avoidance hole on the pressure-maintaining block, when the pressure-maintaining block is pressed against the surface of the soft board of the protection plate and applies pressure to it, the rivet can be inserted into the rivet avoidance hole, thereby preventing the rivet from interfering with the pressure-maintaining operation, ensuring the normal operation of the pressure-maintaining operation, and ensuring that the pressure-maintaining block maintains pressure on the soft board of the protection plate in place.

[0011] As a further description of the technical solution of the utility model, the pressure-maintaining module also includes a thrust sensor for monitoring the thrust of the pressure-maintaining block. By monitoring the thrust of the pressure-maintaining block in real time through the thrust sensor, on the one hand, it can prevent the thrust of the pressure-maintaining block from being too large and causing damage to the soft board of the protection board; on the other hand, it can ensure that the pressure-maintaining block applies sufficient thrust to the soft board of the protection board to achieve effective and accurate pressure-maintaining operation.

[0012] As a further description of the technical solution of the utility model, the first driving module is a torque-controlled electric cylinder.

[0013] As a further description of the technical solution of the utility model, a visual inspection mechanism is also included, which is arranged in the conveying direction of the shell conveying mechanism and is located between the soft board pressure holding mechanism and the hot riveting mechanism. The visual inspection mechanism can take a photo to locate the rivets on the shell, lock the position coordinates of the rivets, and send the position coordinates to the hot riveting mechanism to ensure that the subsequent hot riveting mechanism accurately aligns the shell rivets with hot pressing, which is conducive to improving the accuracy and efficiency of the hot riveting operation.

[0014] As a further description of the technical solution of the utility model, the hot riveting mechanism includes a second driving module and a high-temperature hot riveting member connected to the driving end of the second driving module.

[0015] As a further description of the technical solution of the utility model, the second driving module includes a first driving module, a second driving module and a third driving module respectively used to drive the high-temperature hot riveting component to move along the X, Y and Z directions. By adjusting the position of the high-temperature hot riveting component in the X, Y and Z directions respectively by the first driving module, the second driving module and the third driving module, the positioning of the high-temperature hot riveting component can be made more accurate, ensuring that the high-temperature hot riveting component can accurately align with the rivet for hot pressing.

[0016] As a further description of the technical solution of the utility model, the shell conveying mechanism includes a moving module and a shell positioning module connected to the driving end of the moving module.

[0017] In summary, the utility model has at least the following benefits:

[0018] The lithium battery shell hot riveting equipment provided by the utility model provides a soft plate pressure holding mechanism in the conveying direction of the shell conveying mechanism, so that before the shell is hot-riveted, the soft plate pressure holding mechanism can hold the pressure on the soft plate of the protection plate nested on the shell rivet, so that the soft plate of the protection plate is kept in close contact with the shell, and the soft plate of the protection plate is effectively prevented from popping out from the rivet during the conveying process or the shell hot riveting process, thereby ensuring the orderly progress of the hot riveting operation and, at the same time, improving the quality of the hot riveting operation, which is conducive to improving the qualified rate of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall structural diagram of the lithium battery housing hot riveting equipment of Example 1 of the utility model;

[0020] Figure 2 This is a structural schematic diagram of the soft board pressure-maintaining mechanism of Example 1 of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the pressure-maintaining block and the rivet avoidance hole of Example 1 of the utility model;

[0022] Figure 4 This is a distribution diagram of the visual detection mechanism of Example 1 of the utility model;

[0023] Figure 5 This is a schematic structural diagram of a hot riveting mechanism according to Embodiment 2 of the present utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the shell conveying mechanism of Example 3 of the utility model.

[0025] Markings in the figure:

[0026] 1. Shell conveying mechanism; 11. Moving module; 12. Shell positioning module;

[0027] 2. Soft board pressure-maintaining mechanism; 21. First driving module; 22. Pressure-maintaining module; 221. Pressure-maintaining block; 222. Rivet avoidance hole; 223. Thrust sensor;

[0028] 3. Hot riveting mechanism; 31. Second driving module; 311. First driving module; 312. Second driving module; 313. Third driving module; 32. High temperature hot riveting parts;

[0029] 4. Visual inspection organization. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] refer to Figures 1 to 4 The lithium battery shell hot riveting device provided by the utility model comprises a shell conveying mechanism 1, a soft plate pressure holding mechanism 2 and a hot riveting mechanism 3, wherein the soft plate pressure holding mechanism 2 and the hot riveting mechanism 3 are arranged in sequence along the conveying direction of the shell conveying mechanism 1, and the soft plate pressure holding mechanism 2 and the hot riveting mechanism 3 are located on the same side of the shell conveying mechanism 1. The soft plate pressure holding mechanism 2 is used to hold the pressure of the protective plate soft plate nested on the shell rivet, and the hot riveting mechanism 3 is used to hot press the shell rivet.

[0034] It should be noted that when the shell is loaded onto the shell conveying mechanism 1, the battery cell has been assembled in the shell, a protective plate is welded to the head of the battery cell, the soft plate at the tail of the protective plate is located on the outside of the shell and nested on the rivets of the shell, and the rivets are hot-pressed by the hot riveting mechanism 3 to achieve the connection and fixation of the soft plate of the protective plate and the shell.

[0035] The specific operation process is that the shell together with the assembled battery cell is loaded from the previous station onto the shell conveying mechanism 1. The shell conveying mechanism 1 first transfers the shell to the soft board pressure holding mechanism 2 for pressure holding of the protection board soft board, and then transfers the shell to the hot riveting mechanism 3 for hot pressing of the shell rivets. By setting the soft board pressure holding mechanism 2, the soft board pressure holding mechanism 2 can hold the pressure of the protection board soft board nested on the shell rivet before the shell is hot riveted, so that the protection board soft board remains in a state of being closely attached to the outer surface of the shell, effectively preventing the protection board soft board from popping out from the rivet during the conveying process or during the shell hot riveting process, ensuring the orderly progress of the hot riveting operation, improving the quality of the hot riveting operation, and helping to improve the qualified rate of the product.

[0036] As a further optimization, the soft board pressure-maintaining mechanism 2 includes a first driving module 21 and a pressure-maintaining module 22 connected to the driving end of the first driving module 21, and the pressure-maintaining module 22 includes a pressure-maintaining block 221 for pressing the soft board of the protection board. In some embodiments, a rivet avoidance hole 222 for inserting the rivet is provided at a position corresponding to the rivet of the shell on the pressure-maintaining block 221. The rivet avoidance hole 222 enables the rivet to be inserted into the rivet avoidance hole 222 when the pressure-maintaining block 221 is pressed against the surface of the soft board of the protection board and pressurizes it, thereby preventing the rivet from interfering with the pressure-maintaining operation, ensuring the normal progress of the pressure-maintaining operation, and ensuring that the pressure-maintaining block 221 is in place to pressurize the soft board of the protection board.

[0037] As a further optimization, the pressure-maintaining module 22 also includes a thrust sensor 223 for monitoring the thrust of the pressure-maintaining block 221. Specifically, a slide rail is provided on the driving end of the first driving module 21 along the moving direction of the pressure-maintaining block 221, and a slider is slidably installed on the slide rail. A buffer spring is connected between the slider and the driving end of the first driving module 21 along the moving direction of the pressure-maintaining block 221, and a thrust sensor 223 is connected between the slider and the pressure-maintaining block 221. When the pressure-maintaining block 221 pushes forward to apply pressure to the soft board of the protection plate, the thrust sensor 223 can sense the thrust of the pressure-maintaining block 221 in real time. The setting of the thrust sensor 223, on the one hand, can prevent the thrust of the pressure-maintaining block 221 from being too large and causing damage to the soft board of the protection plate, and play a protective role on the soft board of the protection plate; on the other hand, it can ensure that the pressure-maintaining block 221 applies sufficient thrust to the soft board of the protection plate to achieve effective and in-place pressure-maintaining operation.

[0038] In some embodiments, the first driving module 21 is a torque-controlled electric cylinder. The torque-controlled electric cylinder is used to drive the pressure-maintaining block 221 to perform the pressure-maintaining operation, which can better control the pressure-maintaining intensity and ensure the production quality of the operation.

[0039] As a further optimization, the lithium battery shell hot riveting equipment also includes a visual inspection mechanism 4, which is arranged in the conveying direction of the shell conveying mechanism 1 and is located between the soft board pressure holding mechanism 2 and the hot riveting mechanism 3. The visual inspection mechanism 4 is used to photograph and locate the shell rivets, lock the position coordinates of the rivets, and send the coordinate information of the rivets to the hot riveting mechanism 3 to ensure that the hot riveting mechanism 3 can accurately and precisely hot press the shell rivets in subsequent hot riveting operations, which is beneficial to improving the accuracy and efficiency of the hot riveting operation.

[0040] In some embodiments, the visual inspection mechanism 4 includes a CCD industrial camera and a ring light. The ring light is located at the periphery of the CCD industrial camera and is used to provide a supplementary light source for the CCD industrial camera to ensure the clarity of the photos taken by the CCD industrial camera.

[0041] Example 2

[0042] As a further optimization of Example 1, refer to Figure 5 The hot riveting mechanism 3 includes a second driving module 31 and a high-temperature hot riveting member 32 connected to a driving end of the second driving module 31. In some embodiments, the second driving module 31 may be a robotic arm.

[0043] As one embodiment, the second driving module 31 includes a first driving module 311, a second driving module 312 and a third driving module 313, which are respectively used to drive the high-temperature hot riveting component 32 to move along the X, Y and Z directions. Specifically, the high-temperature hot riveting component 32 is connected to the driving end of the second driving module 312, the fixed end of the second driving module 312 is connected to the driving end of the first driving module 311, and the fixed end of the first driving module 311 is connected to the driving end of the third driving module 313. In this embodiment, the first driving module 311, the second driving module 312 and the third driving module 313 are all servo modules.

[0044] The first driving module 311, the second driving module 312 and the third driving module 313 respectively adjust the position of the high-temperature hot riveted component 32 in the X direction, the Y direction and the Z direction, so that the positioning of the high-temperature hot riveted component 32 can be more accurate, ensuring that the high-temperature hot riveted component 32 can be accurately aligned with the rivet for hot pressing.

[0045] Example 3

[0046] As a further optimization of Example 1, refer to Figure 6 The shell conveying mechanism 1 includes a mobile module 11 and a shell positioning module 12 connected to the driving end of the mobile module 11. In some embodiments, the shell positioning module 12 includes a positioning platform, which is connected to the driving end of the mobile module 11. The positioning platform is provided with a shell placement position, and the two adjacent sides of the shell placement position are provided with a retaining wall structure. The two side positions of the shell placement position opposite to the retaining wall structure are respectively provided with a first positioning component and a second positioning component. The first positioning component and the second positioning component respectively push the shell to abut against the retaining wall structure in different directions, thereby realizing the positioning of the shell. The shell is positioned by the shell positioning module 12, and the shell is conveyed under the drive of the mobile module 11, which can prevent the shell from being displaced during the conveying process, and further ensure the accuracy of the soft board pressure holding operation and the shell hot riveting operation.

[0047] The utility model provides a hot riveting device for a lithium battery shell, which is provided with a soft plate pressure-maintaining mechanism to maintain pressure on a soft plate of a protection plate nested on a shell rivet, effectively preventing the soft plate of the protection plate from popping out of the rivet during transportation or during the shell hot riveting process, ensuring the orderly progress of the hot riveting operation, improving the quality of the hot riveting operation, and being beneficial to improving the qualified rate of battery products; by providing a rivet avoidance hole on the pressure-maintaining block, when the pressure-maintaining block is pressed against the surface of the soft plate of the protection plate and pressurized thereon, the rivet can be inserted into the rivet avoidance hole, avoiding interference of the rivet on the soft plate pressure-maintaining operation, ensuring the normal and orderly progress of the pressure-maintaining operation, and ensuring that the pressure-maintaining block maintains pressure on the soft plate of the protection plate in place; by providing a thrust sensor to perform real-time sensing of the thrust of the pressure-maintaining block, it is possible to prevent the thrust of the pressure-maintaining block from being too large to cause damage to the soft plate of the protection plate, and enable the pressure-maintaining block to exert sufficient thrust on the soft plate of the protection plate to ensure that the pressure is maintained in place; by providing a visual detection mechanism, it is possible to ensure that the subsequent hot riveting mechanism performs accurate and aligned hot pressing on the shell rivet, which is beneficial to improving the accuracy and efficiency of the hot riveting operation.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A lithium battery shell hot riveting equipment, characterized in that: It comprises a shell conveying mechanism (1), a soft board pressure-maintaining mechanism (2) and a hot riveting mechanism (3), wherein the soft board pressure-maintaining mechanism (2) and the hot riveting mechanism (3) are arranged in sequence along the conveying direction of the shell conveying mechanism (1); The soft plate pressure-maintaining mechanism (2) is used for maintaining the pressure of the soft plate of the protection plate nested on the shell rivet, and the hot riveting mechanism (3) is used for hot-pressing the shell rivet.

2. The lithium battery shell hot riveting equipment according to claim 1, characterized in that: The soft board pressure-maintaining mechanism (2) comprises a first driving module (21) and a pressure-maintaining module (22) connected to the driving end of the first driving module (21).

3. The lithium battery shell hot riveting equipment according to claim 2, characterized in that: The pressure-maintaining module (22) comprises a pressure-maintaining block (221) for pressing against the protective plate soft plate.

4. The lithium battery shell hot riveting equipment according to claim 3, characterized in that: A rivet avoidance hole (222) for inserting the rivet is provided on the pressure-maintaining block (221) at a position corresponding to the housing rivet.

5. The lithium battery shell hot riveting equipment according to claim 3, characterized in that: The pressure-maintaining module (22) further comprises a thrust sensor (223) for monitoring the thrust of the pressure-maintaining block (221).

6. The lithium battery shell hot riveting equipment according to claim 2, characterized in that: The first driving module (21) is a torque-controlled electric cylinder.

7. The lithium battery shell hot riveting equipment according to claim 1, characterized in that: It also comprises a visual inspection mechanism (4), which is arranged in the conveying direction of the shell conveying mechanism (1) and is located between the soft board pressure maintaining mechanism (2) and the hot riveting mechanism (3).

8. The lithium battery shell hot riveting equipment according to claim 1, characterized in that: The heat riveting mechanism (3) comprises a second driving module (31) and a high-temperature heat riveting component (32) connected to the driving end of the second driving module (31).

9. The lithium battery shell hot riveting equipment according to claim 8, characterized in that: The second driving module (31) comprises a first driving module (311), a second driving module (312) and a third driving module (313) respectively used to drive the high-temperature hot riveting component (32) to move along the X, Y and Z directions.

10. The lithium battery shell hot riveting equipment according to claim 1, characterized in that: The shell conveying mechanism (1) comprises a moving module (11) and a shell positioning module (12) connected to a driving end of the moving module (11).

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