Battery cell top cover retaining mechanism, battery cell transfer device and battery cell production line

Abstract

The utility model provides a battery cell top cover retaining mechanism, a battery cell transfer device and a battery cell production line, the battery cell top cover retaining mechanism comprises a first driving piece connected to a manipulator, and a clamping part connected to the driving end of the first driving piece, the clamping part is provided with a clamping area for the end part of a battery cell to enter, and the clamping area is provided with a second driving piece connected to the manipulator. And the clamping part is driven by the first driving piece to move in the first direction, so that the end part of the battery cell and the top cover located at the end part of the battery cell can enter the clamping area, and when the end part of the battery cell and the top cover enter the clamping area, the clamping part can clamp the end part of the battery cell and the top cover. According to the battery cell top cover retaining mechanism disclosed by the utility model, the end part of the battery cell and the top cover positioned at the end part of the battery cell are clamped through the clamping part in a battery cell transferring process, so that the top cover and the battery cell shell can be relatively fixed, the bent top cover can be prevented from rebounding and deviating, the top cover is kept in a state of being pressed into the battery cell shell, and the battery cell is prevented from being damaged. And the press-fitting yield of the top cover can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cell manufacturing, and in particular to a battery cell top cover holding mechanism. The utility model also relates to a battery cell transfer device provided with the battery cell top cover holding mechanism, and a battery cell production line provided with the battery cell transfer device. Background Art

[0002] With the continuous development and progress of battery technology, the manufacturing and assembly process of battery cells, as the core part of the battery, has become increasingly important. In the production process of battery cells, top cover bending and press-fit spot welding are two key links. Among them, the top cover needs to be bent before press-fit spot welding, and after bending, the battery cell is transferred to the spot welding station for press-fit spot welding.

[0003] However, in the prior art, since the multi-layer tabs of the positive electrode aluminum foil are strong and tough, rebound often occurs after the top cover is bent, resulting in the position of the battery top cover relative to the battery case being offset during the process of transferring the battery case and the top cover from the pre-pressing and bending station to the pre-welding station, thereby affecting the yield rate of the press-fit spot welding of the top cover on the battery case. Utility Model Content

[0004] In view of this, the utility model aims to provide a battery cell top cover retaining mechanism to ensure that the battery cell top cover remains in a state of being pressed into the battery cell housing, thereby facilitating improving the top cover press-fitting efficiency.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A battery cell top cover holding mechanism comprises a first driving member connected to a manipulator, and a clamping portion connected to a driving end of the first driving member; the clamping portion is provided with a clamping area for the battery cell end to enter, and the clamping portion is driven by the first driving member to move along a first direction, so that the battery cell end and the top cover located at the battery cell end can enter the clamping area; when the battery cell end and the top cover enter the clamping area, the clamping portion can clamp the battery cell end and the top cover.

[0007] Furthermore, the clamping portion includes a pressure plate forming the clamping area, and a second driving member capable of driving the pressure plate to move along a second direction, and the pressure plate is driven by the second driving member to clamp the battery cell end and the top cover entering the clamping area.

[0008] Furthermore, the pressure plate includes a limit plate and a clamping plate connected to the driving end of the second driving member, and the clamping area is formed between the limit plate and the clamping plate; the limit plate and the clamping plate are driven by the second driving member to approach each other and clamp the battery cell end and the top cover, or move away from each other and release the battery cell end and the top cover.

[0009] Furthermore, the clamping plate has a stopper protruding toward the limiting plate, and when the clamping portion clamps the battery cell end and the top cover, the stopper can abut against the top cover.

[0010] Furthermore, the first driving member and / or the second driving member is a cylinder.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The battery cell top cover holding mechanism described in the utility model clamps the battery cell end entering the clamping area and the top cover located at the battery cell end through the clamping part, so that during the battery cell transfer process, the position of the top cover and the battery cell shell can be relatively fixed, which is beneficial to prevent the top cover from rebounding and deflecting after bending, ensuring that the top cover remains in a state of being pressed into the battery cell shell, which is beneficial to improving the top cover pressing yield.

[0013] In addition, the clamping area formed between the two pressure plates is conducive to ensuring that the clamping part stably and reliably clamps the battery cell end and the top cover. By setting the cooperation between the limit plate and the clamping plate, the clamping and release of the battery cell end and the top cover by the clamping part can be more accurately controlled.

[0014] In addition, by arranging a stopper on the clamping plate, it is helpful to further prevent the top cover from rebounding. By using a cylinder as a driving member, it is helpful to quickly and stably clamp or release the battery cell end and the top cover.

[0015] Another object of the present utility model is to provide a battery cell transfer device, which includes a manipulator, a gripping mechanism arranged on the manipulator, and the battery cell top cover holding mechanism as described above.

[0016] Furthermore, the grasping mechanism includes a clamping claw and a pressing block provided on the manipulator, and the manipulator grasps the battery core through the cooperation between the clamping claw and the pressing block.

[0017] Furthermore, the grasping mechanism includes a plurality of grasping mechanisms provided on the manipulator, and the battery cell top cover holding mechanism is provided in a one-to-one correspondence with the grasping mechanism.

[0018] The battery cell transfer device described in the utility model, by using the above-mentioned battery cell top cover holding mechanism in conjunction with the manipulator and the grasping mechanism, is beneficial to keeping the cover plate in a state of being pressed into the battery cell shell during the battery cell transfer process, and is beneficial to improving the top cover pressing efficiency after the battery cell transfer.

[0019] In addition, the combined gripping method of the clamp and the pressing block can grasp the battery cell more stably. The one-to-one setting of multiple gripping mechanisms and the battery cell top cover holding mechanism can grasp multiple battery cells at the same time and ensure that each top cover remains pressed into the battery cell shell, so as to achieve more efficient and accurate battery cell transfer.

[0020] At the same time, the utility model also proposes a battery cell production line, on which the battery cell transfer device as described above is provided.

[0021] The battery cell production line of the utility model is beneficial to improving production efficiency and reducing the defective product rate of battery cell top cover press-fitting by introducing the battery cell transfer device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0023] Figure 1 This is a front view of the battery cell transfer device according to an embodiment of the utility model;

[0024] Figure 2 A top view of the cell transfer device according to an embodiment of the utility model;

[0025] Figure 3 It is a left view of the battery cell transfer device according to an embodiment of the utility model;

[0026] Figure 4 for Figure 1 The enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the structure of the battery top cover retaining mechanism according to an embodiment of the utility model;

[0028] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0029] Description of reference numerals:

[0030] 1. Cell top cover holding mechanism; 11. First driving member; 12. Clamping part; 121. Pressing plate; 1211. Clamping plate; 1212. Limiting plate; 1213. Stopper; 122. Second driving member; 13. Clamping area; 2. Manipulator; 3. Grasping mechanism; 31. Clamping claw; 32. Pressing block; 4. Cell; 5. Top cover. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] Embodiment 1

[0036] This embodiment relates to a battery cell top cover retaining mechanism 1, which has an overall structure and is combined with Figures 1 to 6 As shown, the battery cell top cover holding mechanism 1 includes a first driving member 11 connected to the robot 2 and a clamping portion 12 connected to the driving end of the first driving member 11 .

[0037] The clamping portion 12 is provided with a clamping area 13 for the end of the battery cell 4 to enter, and the clamping portion 12 is driven by the first driving member 11 to move along the first direction, so that the end of the battery cell 4 and the top cover 5 located at the end of the battery cell 4 can enter the clamping area 13. When the end of the battery cell 4 and the top cover 5 enter the clamping area 13, the clamping portion 12 can clamp the end of the battery cell 4 and the top cover 5.

[0038] As shown in the above structure, the battery cell top cover holding mechanism 1 of the present embodiment can fix the position of the top cover 5 and the battery cell 4 shell relatively by clamping the end of the battery cell 4 and the top cover 5 located at the end of the battery cell 4 during the transfer process of the battery cell 4, which is beneficial to prevent the top cover 5 from rebounding and deflecting after bending, and ensures that the top cover 5 remains in a state of being pressed into the battery cell 4 shell, which is beneficial to improve the pressing yield of the top cover 5.

[0039] Based on the above overall introduction, specifically, in the production process, the battery cell 4 of this embodiment sequentially undergoes the processes of top cover bending, top cover pre-pressing into the battery cell housing, and press-fitting welding. In addition, the battery cell 4 is transferred between the pre-pressing and bending station and the press-fitting spot welding station by the robot 2.

[0040] For the convenience of description and introduction of related contents, this embodiment is Figure 4 When the battery cell 4 is grasped by the robot 2, the clamping portion 12 is located at one side of the end of the battery cell 4 provided with the top cover 5. After the robot 2 grasps the battery cell 4, the first driving member 11 drives the clamping portion 12 to move toward the battery cell 4 along the first direction.

[0041] In detail, the first driving member 11 of this embodiment can be an existing product with a linear driving function, such as a linear motor, a cylinder, etc. Moreover, in a specific implementation, the first driving member 11 is connected to one side of the manipulator 2 through a connecting plate, and the clamping portion 12 is connected to the driving end of the first driving member 11, such as the piston rod of the cylinder, through another connecting plate.

[0042] Meanwhile, the clamping portion 12 can adopt relevant structures well known to those skilled in the art, and has the following features: Figure 4 The clamping area 13 shown in the figure is larger than the thickness of the battery cell 4 . When the clamping portion 12 moves toward the battery cell 4 along the first direction, the end of the battery cell 4 and the top cover 5 arranged at the end of the battery cell 4 can enter the clamping area 13 .

[0043] As a preferred embodiment, Figures 4 to 6 As shown, the clamping portion 12 of this embodiment includes a pressing plate 121 formed with a clamping area 13 , and a second driving member 122 capable of driving the pressing plate 121 to move along the second direction.

[0044] Furthermore, the pressing plate 121 is driven by the second driving member 122 to clamp the end of the battery cell 4 and the top cover 5 entering the clamping area 13. At this time, the clamping area 13 is formed between the two pressing plates 121, which is conducive to ensuring that the clamping portion 12 stably and reliably clamps the end of the battery cell 4 and the top cover 5.

[0045] In specific implementation, as an exemplary structure, the clamping portion 12 of this embodiment has two upper and lower pressing plates 121, and the two pressing plates 121 are driven by the second driving member 122 to move along the Figure 4 The second direction indicated by the middle arrow moves them closer to or farther from each other, thereby clamping or releasing the end of the battery cell 4 and the top cover 5.

[0046] In this embodiment, as a preferred implementation, Figure 4 and Figure 6 As shown, the pressing plate 121 of this embodiment includes a limiting plate 1212 and a clamping plate 1211 connected to the driving end of the second driving member 122 , and a clamping area 13 is formed between the limiting plate 1212 and the clamping plate 1211 .

[0047] At the same time, the limiting plate 1212 and the clamping plate 1211 are driven by the second driving member 122 to move closer to each other and clamp the end of the battery cell 4 and the top cover 5, or move away from each other and release the end of the battery cell 4 and the top cover 5. In this way, by setting the limiting plate 1212 and the clamping plate 1211 in coordination, the clamping and releasing of the end of the battery cell 4 and the top cover 5 by the clamping part 12 can be more accurately controlled.

[0048] In detail, the upper and lower pressing plates 121 of the clamping portion 12 of this embodiment are respectively a limit plate 1212 located at the upper portion and a clamping plate 1211 located at the lower portion, and a clamping area 13 is formed between the limit plate 1212 and the clamping plate 1211. Meanwhile, the second driving member 122 can be an existing product with a linear driving function, such as a linear motor, a cylinder, etc.

[0049] Specifically, as an exemplary structure, the limit plate 1212 and the clamping plate 1211 of this embodiment are both connected to the driving end of the second driving member 122, such as the piston rod of the cylinder. Under the drive of the second driving member 122, the limit plate 1212 and the clamping plate 1211 are moved closer to each other or away from each other.

[0050] As a preferred embodiment, continue to refer to Figure 4 and Figure 6 As shown, the clamping plate 1211 of this embodiment has a stopper 1213 protruding toward the limiting plate 1212, and when the clamping portion 12 clamps the end of the battery cell 4 and the top cover 5, the stopper 1213 can abut against the top cover 5. At this time, by providing the stopper 1213 on the clamping plate 1211, it is helpful to further prevent the top cover 5 from rebounding.

[0051] In specific implementation, in this embodiment, the block 1213 is, for example, detachably connected or integrally formed on the clamping plate 1211, and when the clamping portion 12 clamps the end of the battery cell 4 and the top cover 5, the block 1213 pushes the top cover 5 to keep the top cover 5 in the shell of the battery cell 4.

[0052] As a preferred embodiment, the first driving member 11 or the second driving member 122 is a cylinder, or both the first driving member 11 and the second driving member 122 are cylinders. In this way, by using a cylinder as a driving member, it is possible to quickly and stably clamp or release the end of the battery cell 4 and the top cover 5. Specifically, the cylinder of this embodiment can be a cylinder product well known to those skilled in the art.

[0053] The battery cell top cover holding mechanism 1 of the present embodiment clamps the end of the battery cell 4 entering the clamping area 13 and the top cover 5 located at the end of the battery cell 4 through the clamping portion 12. During the transfer process of the battery cell 4, the position of the top cover 5 and the battery cell 4 shell can be relatively fixed, so as to prevent the top cover 5 from rebounding and deflecting after bending, ensure that the top cover 5 remains in a state of being pressed into the battery cell 4 shell, and help improve the pressing yield of the top cover 5.

[0054] Embodiment 2

[0055] This embodiment relates to a cell transfer device, which includes a manipulator 2, a gripping mechanism 3 provided on the manipulator 2, and the cell top cover holding mechanism 1 in the first embodiment. The structures not described in the cell transfer device may refer to the existing structures.

[0056] The battery cell transfer device of this embodiment uses the battery cell top cover holding mechanism 1 in the first embodiment, which is helpful to keep the cover plate pressed into the battery cell 4 shell during the battery cell 4 transfer process, and is helpful to improve the press-fitting efficiency of the top cover 5 after the battery cell 4 is transferred.

[0057] As a preferred embodiment, Figures 1 to 3 As shown, the gripping mechanism 3 of this embodiment includes a clamping claw 31 and a pressing block 32 provided on the manipulator 2. Moreover, the manipulator 2 grips the battery cell 4 through the cooperation of the clamping claw 31 and the pressing block 32.

[0058] In this way, the combined grasping method of the clamping jaws 31 and the pressing block 32 can grasp the battery cell 4 more stably. In specific implementation, the clamping jaws 31 and the pressing block 32 in the grasping mechanism 3 can adopt related structures well known to those skilled in the art. In addition, the grasping mechanism 3 of this embodiment can also adopt existing products with the function of grasping the battery cell 4.

[0059] In this embodiment, as a preferred implementation, Figures 2 to 3 As shown, the gripping mechanism 3 includes a plurality of caps 5 provided on the manipulator 2, and the cell top cover holding mechanism 1 is provided one by one in correspondence with the gripping mechanism 3. At this time, the cell transfer device can simultaneously grasp a plurality of cells 4 and ensure that each cap 5 remains in a state of being pressed into the cell 4 housing, so as to achieve more efficient and accurate cell 4 transfer.

[0060] The battery cell top cover holding mechanism 1 of the present embodiment cooperates with the battery cell top cover holding mechanism 1 and the grasping mechanism 3, which can help keep the cover plate pressed into the battery cell 4 shell during the transfer of the battery cell 4, thereby improving the pressing efficiency of the top cover 5 after the transfer of the battery cell 4.

[0061] Embodiment 3

[0062] This embodiment relates to a battery cell production line, in which the battery cell transfer device of the second embodiment is provided.

[0063] The battery cell production line of this embodiment adopts the battery cell transfer device in the second embodiment, which is beneficial to improving production efficiency and reducing the defective rate of the battery cell top cover 5 during press-fitting.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery cell top cover retaining mechanism, characterized in that: It includes a first driving member connected to the manipulator, and a clamping portion connected to the driving end of the first driving member; The clamping portion is provided with a clamping area for the end of the battery cell to enter, and the clamping portion is driven by the first driving member to move along the first direction, so that the end of the battery cell and the top cover located at the end of the battery cell can enter the clamping area; When the battery cell end and the top cover enter the clamping area, the clamping portion can clamp the battery cell end and the top cover.

2. The battery cell top cover retaining mechanism according to claim 1, characterized in that: The clamping portion includes a pressing plate formed with the clamping area, and a second driving member capable of driving the pressing plate to move along a second direction, and the pressing plate is driven by the second driving member to clamp the battery cell end and the top cover entering the clamping area.

3. The battery cell top cover retaining mechanism according to claim 2, characterized in that: The pressing plate includes a limit plate and a clamping plate connected to the driving end of the second driving member, and the clamping area is formed between the limit plate and the clamping plate; The limiting plate and the clamping plate are driven by the second driving member to move closer to each other and clamp the battery cell end and the top cover, or move away from each other and release the battery cell end and the top cover.

4. The battery cell top cover retaining mechanism according to claim 3, characterized in that: The clamping plate has a stopper protruding toward the limiting plate, and when the clamping portion clamps the battery core end and the top cover, the stopper can abut against the top cover.

5. The battery cell top cover retaining mechanism according to any one of claims 2 to 4, characterized in that: The first driving member and / or the second driving member are / is a cylinder.

6. A cell transfer device, characterized in that: The battery cell transfer device comprises a manipulator, a gripping mechanism provided on the manipulator, and a battery cell top cover holding mechanism according to any one of claims 1 to 5.

7. The cell transfer device according to claim 6, characterized in that: The grasping mechanism comprises a clamping claw and a pressing block arranged on the manipulator, and the manipulator grasps the battery core through the cooperation between the clamping claw and the pressing block.

8. The cell transfer device according to claim 6, characterized in that: The grabbing mechanism comprises a plurality of mechanisms arranged on the manipulator, and the battery cell top cover holding mechanism is arranged in one-to-one correspondence with the grabbing mechanism.

9. A battery cell production line, characterized in that: The battery cell production line is provided with a battery cell transfer device as described in any one of claims 6 to 8.

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