Angle folding device for solving opening of front edge of lithium battery cell

Abstract

The utility model relates to an angle folding device for solving opening of the front edge of a lithium battery cell. The angle folding device comprises a cell bottom plate, a tab bottom plate and a bearing roller, a battery cell positioning groove is formed in the front position of the battery cell bottom plate, penetrates through the front end face of the battery cell bottom plate and serves as a battery cell positioning treatment receiving table; the tab bottom plate and the battery cell bottom plate are arranged next to each other, the rear end of the tab bottom plate is connected with the front end of the battery cell bottom plate, and the tab of the battery cell to be treated in the battery cell positioning groove is arranged on the upper surface of the tab bottom plate; two bearing rollers are arranged on the pole lug bottom plate and comprise a left bearing roller and a right bearing roller, the left bearing roller and the right bearing roller can respectively roll along the upper surface of the pole lug bottom plate leftwards and rightwards, and the tracks of the rollers pass through the front edge of a battery cell main body of the battery cell during rolling. By adopting the beveling device disclosed by the utility model, beveling and edge rolling treatment can be conveniently and efficiently carried out on the aluminum plastic front edge of the battery cell.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion batteries, and in particular to a folding device for solving the problem of opening of the front edge of a lithium battery cell. Background Art

[0002] Lithium-ion batteries are new green high-energy batteries with excellent performance. Their characteristics are: high capacity, no memory effect, no pollution, small size, low internal resistance, low self-discharge and high cycle times. Lithium-ion batteries have been widely used in many fields such as mobile phones, electronic cigarettes, computers, cameras, drones, robots, etc.

[0003] In the production process of lithium-ion batteries, after the lithium-ion battery cells are wound, they need to be wrapped with aluminum-plastic film on the outside of the battery cells. The front edge of the aluminum-plastic film will open after the packaging is heated at high temperature. In order to prevent the battery cell from being unable to be installed in the corresponding packaging structure after the front edge opens, the aluminum-plastic front edge of the battery cell needs to be folded and rolled.

[0004] The existing aluminum-plastic front edge of the battery cell is processed by manual rolling and machine rolling. The efficiency of manual rolling is low, and the device structure of machine rolling is complicated, and the operation and maintenance are inconvenient. Utility Model Content

[0005] The utility model aims to provide a folding device for solving the problem of opening the front edge of a lithium battery cell, so as to conveniently and efficiently perform folding and rolling processing of the front edge of the aluminum-plastic battery cell.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] A folding device for solving the problem of opening the front edge of a lithium battery cell comprises a cell bottom plate, a tab bottom plate, and a bearing roller; a cell positioning groove is provided at the front position of the cell bottom plate, the cell positioning groove penetrates the front end surface of the cell bottom plate, and the cell positioning groove serves as a cell positioning processing receiving platform; the tab bottom plate is placed closely to the cell bottom plate, the rear end of the tab bottom plate is connected to the front end of the cell bottom plate, and the tab of the battery cell to be processed placed in the cell positioning groove is placed on the upper surface of the tab bottom plate; two bearing rollers are provided on the tab bottom plate, including a left bearing roller and a right bearing roller, the left bearing roller and the right bearing roller can roll left and right along the upper surface of the tab bottom plate respectively, and the roller tracks pass through the front edge of the battery cell body during rolling.

[0008] To optimize the above technical solutions, the specific measures taken also include:

[0009] The battery cell positioning groove is opened in the front center of the battery cell bottom plate, and the left and right sides of the battery cell positioning groove are battery cell reference positioning ribs; the left and right sides of the middle of the battery cell positioning groove are provided with U-shaped grooves for facilitating the removal of the battery cell.

[0010] Furthermore, the bearing roller is connected to a sliding device, and the sliding device includes a bearing connecting rod, a connecting rod base, a slider and a guide rail. One end of the bearing connecting rod is connected to the bearing roller, and the other end is connected to the connecting rod base. The guide rail is arranged on the front end surface of the pole ear bottom plate, and the connecting rod base is movably connected to the guide rail through the slider.

[0011] Corresponding to the left bearing roller and the right bearing roller, the bearing connecting rod, the connecting rod base and the sliding block are respectively provided with left and right groups, and the left sliding block and the right sliding block move on the same horizontal guide rail.

[0012] The connecting rod base is L-shaped, one side of the L-shaped base is placed on the upper surface of the pole ear bottom plate, a connecting rod mounting groove is opened on the base side, and the rear part of the bearing connecting rod is installed in the connecting rod mounting groove; the other side of the L-shaped base is placed on the front end surface of the pole ear bottom plate, on the base side, the connecting rod base is fixedly connected to the slider, and the slider is embedded in the guide rail.

[0013] As a preferred solution, a cell rear positioning block is provided on the cell bottom plate, and the cell rear positioning block is arranged at the rear of the cell positioning groove; the front and rear positions of the cell rear positioning block are adjustable to control the size of the cell positioning processing platform.

[0014] The battery core bottom plate and the tab bottom plate are both installed on the bottom plate.

[0015] As a preferred solution, a tension spring is installed at the outer end of the connecting rod base, and the other end of the tension spring is connected to the outer side of the front end surface of the base plate. The tension spring is used to reset the bearing roller to the outer side after moving to the middle.

[0016] A push handle is installed on the upper part of the connecting rod base.

[0017] When the left bearing roller and the right bearing roller are reset, the two are symmetrical left and right along the central axis of the battery core positioning groove.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] By adopting the corner folding device of the utility model, the aluminum-plastic front edge corner folding and rolling processing of the battery cell can be carried out conveniently and efficiently, thereby solving the problem of the front edge corner folding of the battery cell, avoiding the yield loss due to the front edge width problem of the battery cell, and reducing the defective rate of the battery; and the use and operation of the corner folding device is simple, which can save costs and promote production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : A three-dimensional structural diagram of the corner folding device for solving the problem of the front edge of a lithium battery cell being opened in the utility model.

[0021] Figure 2 : A schematic diagram of the top view of the structure of the corner folding device for solving the problem of the front edge of a lithium battery cell being opened in the utility model.

[0022] Figure 3 : Figure 2 Schematic diagram of the EE cross-sectional structure of the angle-folding device for solving the problem of the front edge of the lithium battery cell being opened.

[0023] Figure 4 : A schematic structural diagram of the front side of the folding device for solving the problem of the front edge of a lithium battery cell being opened in the utility model.

[0024] In the figure: 1-battery cell rear positioning block, 2-battery cell bottom plate, 3-ear lug bottom plate, 4-bearing connecting rod, 5-bearing roller, 6-connecting rod base, 7-slider, 8-guide rail, 9-tension spring, 10-bottom plate. DETAILED DESCRIPTION

[0025] The above contents of the utility model are further described in detail below in the form of embodiments, but this should not be understood as the scope of the above subject matter of the utility model is limited to the following embodiments. All technologies realized based on the above contents of the utility model belong to the scope of the utility model.

[0026] In the description of the present utility model, it is also necessary to explain that:

[0027] For the purpose of easy understanding of the description, the orientation or position relationship in the present invention is: Figure 1 The position of the middle bearing roller 5 is the front, the battery base plate 2 is the back, the bearing roller 5 outside the paper in the figure is the left, and the bearing roller 5 inside the paper in the figure is the right.

[0028] The utility model provides a folding device for solving the problem that the front edge of a lithium battery cell is opened, such as Figure 1 , 2 As shown, it includes a battery cell bottom plate 2, a tab bottom plate 3, and a bearing roller 5; a battery cell positioning groove is opened at the front position of the battery cell bottom plate 2, the battery cell positioning groove penetrates the front end surface of the battery cell bottom plate 2, and the battery cell positioning groove serves as a battery cell positioning processing receiving platform; the tab bottom plate 3 is placed closely to the battery cell bottom plate 2, the rear end of the tab bottom plate 3 is connected to the front end of the battery cell bottom plate 2, and the tab of the battery cell to be processed placed in the battery cell positioning groove is placed on the upper surface of the tab bottom plate 3; two bearing rollers 5 are provided on the tab bottom plate 3, including a left bearing roller and a right bearing roller, and the left bearing roller and the right bearing roller can roll left and right along the upper surface of the tab bottom plate 3 respectively, and the roller track passes through the front edge of the battery cell body during rolling.

[0029] In the embodiment, the bearing roller 5 is connected to the sliding device, and the sliding device includes a bearing connecting rod 4, a connecting rod base 6, a slider 7 and a guide rail 8. One end of the bearing connecting rod 4 is connected to the bearing roller 5, and the other end is connected to the connecting rod base 6. The guide rail 8 is arranged on the front end surface of the pole ear bottom plate 3, and the connecting rod base 6 is movably connected to the guide rail 8 through the slider 7.

[0030] Corresponding to the left bearing roller and the right bearing roller, the bearing connecting rod 4, the connecting rod base 6, and the slider 7 are respectively provided in left and right groups, and the left slider and the right slider move on the same horizontal guide rail 8. In the embodiment, two small sections of the horizontal guide rail 8 can also be provided respectively, so that the left slider and the right slider move on the left horizontal guide rail and the right horizontal guide rail respectively.

[0031] In the embodiment, the connecting rod base 6 is L-shaped, one base edge of the L-shape is placed on the upper surface of the pole lug bottom plate 3, a connecting rod mounting groove is opened on the base edge, and the rear part of the bearing connecting rod 4 is installed in the connecting rod mounting groove; the other base edge of the L-shape is placed on the front end surface of the pole lug bottom plate 3, on the base edge, the connecting rod base 6 is fixedly connected to the slider 7, and the slider 7 is embedded in the guide rail 8.

[0032] Among them, as a preferred embodiment, the battery cell positioning groove is opened in the front center of the battery cell bottom plate 2, and the left and right sides of the battery cell positioning groove are battery cell reference positioning ribs; when the left bearing roller and the right bearing roller are reset, the two are symmetrical left and right along the central axis of the battery cell positioning groove.

[0033] As a preferred solution, U-shaped grooves are provided on the left and right sides of the middle of the battery cell positioning groove for facilitating the removal of the battery cell.

[0034] In one embodiment, a cell rear positioning block 1 is further provided on the cell bottom plate 2, and the cell rear positioning block 1 is provided at the rear of the cell positioning groove; the front and rear positions of the cell rear positioning block 1 are adjustable, and are used to control the size of the cell positioning processing platform. The position adjustment method of the cell rear positioning block 1 can be set by a conventional positioning structure.

[0035] In one embodiment, the battery cell bottom plate 2 and the battery cell rear positioning block 1 and the tab bottom plate 3 thereon are all mounted on the bottom plate 10 for easy overall use.

[0036] Preferably, a tension spring 9 is installed at the outer end of the connecting rod base 6, and the other end of the tension spring 9 is connected to the outside of the front end surface of the base plate 10. The tension spring 9 is used to reset the bearing roller 5 to the outside after moving to the middle.

[0037] Preferably, a push handle (not shown in the figure) is installed on the upper part of the connecting rod base 6 to facilitate manual pushing operation.

[0038] The usage of the utility model is:

[0039] The battery cell to be processed is placed in the battery cell positioning groove, that is, the battery cell positioning processing platform, the size of the battery cell positioning processing platform has been adjusted to a suitable size through the forward and backward movement of the battery cell rear positioning block 1; the pole ear of the battery cell to be processed is placed on the upper surface of the pole ear bottom plate 3; the left bearing roller and the right bearing roller are manually pushed to move toward the middle respectively, and the roller tracks pass through the front edge of the battery cell body, so that the top angles on both sides of the battery cell are completely rolled, and then the battery cell after rolling is taken out to evaluate whether the front edge folding angles on both sides of the battery cell meet the process requirements.

[0040] The above description is only a preferred embodiment of the utility model and does not constitute any form of limitation to the utility model. Any technician familiar with the profession, without departing from the scope of the technical solution of the utility model and based on the technical essence of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment shall still fall within the scope of protection of the technical solution of the utility model.

Claims

1. A folding device for solving the problem of opening the front edge of a lithium battery cell, characterized in that: The battery cell bottom plate (2) comprises a battery cell bottom plate (2), a tab bottom plate (3), and a bearing roller (5); the battery cell bottom plate (2) is provided with a battery cell positioning groove at the front position, the battery cell positioning groove penetrates the front end surface of the battery cell bottom plate (2), and the battery cell positioning groove serves as a battery cell positioning processing receiving platform; the tab bottom plate (3) is placed closely to the battery cell bottom plate (2), the rear end of the tab bottom plate (3) is connected to the front end of the battery cell bottom plate (2), and the tab of the battery cell to be processed placed in the battery cell positioning groove is placed on the upper surface of the tab bottom plate (3); two bearing rollers (5) are provided on the tab bottom plate (3), comprising a left bearing roller and a right bearing roller, and the left bearing roller and the right bearing roller can respectively roll along the upper surface of the tab bottom plate (3) to the left and right, and the roller tracks pass through the front edge of the battery cell body during rolling.

2. The angle folding device for solving the problem of front edge opening of lithium battery cells according to claim 1, characterized in that: The battery cell positioning groove is provided in the center of the battery cell bottom plate (2), and the left and right sides of the battery cell positioning groove are battery cell reference positioning ribs; the left and right sides of the middle of the battery cell positioning groove are provided with U-shaped grooves for facilitating the removal of the battery cell.

3. The angle folding device for solving the problem of front edge opening of lithium battery cell according to claim 1, characterized in that: The bearing roller (5) is connected to a sliding device, and the sliding device comprises a bearing connecting rod (4), a connecting rod base (6), a slider (7) and a guide rail (8). One end of the bearing connecting rod (4) is connected to the bearing roller (5), and the other end is connected to the connecting rod base (6). The guide rail (8) is arranged on the front end surface of the pole ear bottom plate (3), and the connecting rod base (6) is movably connected to the guide rail (8) through the slider (7).

4. The angle folding device for solving the problem of opening of the front edge of a lithium battery cell according to claim 3, characterized in that: Corresponding to the left bearing roller and the right bearing roller, the bearing connecting rod (4), the connecting rod base (6), and the sliding block (7) are respectively provided in left and right groups, and the left sliding block and the right sliding block move on the same horizontal guide rail (8).

5. The angle folding device for solving the problem of opening of the front edge of a lithium battery cell according to claim 3, characterized in that: The connecting rod base (6) is L-shaped, one side of the L-shaped base is placed on the upper surface of the tab bottom plate (3), a connecting rod installation groove is provided on the base side, and the rear part of the bearing connecting rod (4) is installed in the connecting rod installation groove; the other side of the L-shaped base is placed on the front end surface of the tab bottom plate (3), on the base side, the connecting rod base (6) is fixedly connected to the slider (7), and the slider (7) is embedded in the guide rail (8).

6. The angle folding device for solving the problem of front edge opening of lithium battery cells according to claim 1, characterized in that: The cell bottom plate (2) is provided with a cell rear positioning block (1), and the cell rear positioning block (1) is arranged at the rear of the cell positioning groove; the front and rear positions of the cell rear positioning block (1) are adjustable, and are used to control the size of the cell positioning processing platform.

7. The angle folding device for solving the problem of front edge opening of lithium battery cells according to claim 3, characterized in that: The battery cell bottom plate (2) and the tab bottom plate (3) are both mounted on the bottom plate (10).

8. The angle folding device for solving the problem of front edge opening of lithium battery cells according to claim 7, characterized in that: A tension spring (9) is installed at the outer end of the connecting rod base (6), and the other end of the tension spring (9) is connected to the outer side of the front end surface of the bottom plate (10). The tension spring (9) is used to reset the bearing roller (5) to the outer side after moving toward the middle.

9. The angle folding device for solving the problem of opening of the front edge of a lithium battery cell according to claim 3, characterized in that: A push handle is installed on the upper part of the connecting rod base (6).

10. The angle folding device for solving the problem of front edge opening of lithium battery cell according to claim 1, characterized in that: When the left bearing roller and the right bearing roller are reset, the two are symmetrical left and right along the central axis of the battery core positioning groove.

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