Limiting device for lithium battery assembly shell

Abstract

A lithium battery assembly shell limiting device comprises a base capable of containing a battery cell shell, a plurality of stand columns are installed on the base and distributed in a rectangular shape, and a fixing plate is installed at the top ends of the stand columns; a movable plate is arranged below the fixed plate, the stand column penetrates through the movable plate, the stand column and the movable plate are in sliding connection, a telescopic cylinder is arranged at the upper end of the fixed plate, and the output end of the telescopic cylinder vertically penetrates through the fixed plate downwards to be connected with the movable plate; a driving motor is installed on one side of the movable plate, the output end of the driving motor is connected with a lead screw, the lead screw is provided with two sections of reverse threads and is connected with two first clamping plates through the two sections of threads, a battery cell group can be fixed, the first clamping plates vertically and downwards penetrate through the movable plate, and sliding grooves for the first clamping plates to move are formed in the movable plate. Accidental injuries to arms of workers in the shell assembling process are effectively reduced, the physical strength of manually assembling the lithium battery pack is saved, and the efficiency of assembling the lithium battery into the shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery assembly, in particular to a lithium battery assembly shell limiting device. Background Art

[0002] With the development of science and technology, lithium batteries have become mainstream and are used in various fields. They are a type of battery with lithium metal or lithium alloy as positive / negative electrodes and a non-aqueous electrolyte solution. Soft-pack lithium batteries refer to lithium batteries whose shells are encapsulated by aluminum-plastic composite films. Usually, multiple cells need to be inserted into the PCB board at the same time to form a lithium battery cell group. The cell group is then fixed with high-temperature fiber tape. After fixation, EVA black cotton is applied around the cell group for heat insulation and fire prevention. Then, an insulating epoxy board is applied to the outside. Finally, the lithium battery cell is assembled into the shell to form a lithium battery pack, which is mainly used in multi-wheeled electric vehicles. However, during the last step of shell installation, workers are required to pick up the cell on the operating table and install it into the shell. On the one hand, the shell and the area around the cell are sharp, which can easily injure the arm. On the other hand, the friction resistance between the shell and the cell is large, making it difficult and slow to insert the cell into the shell. Utility Model Content

[0003] In order to solve the technical problems existing in the above background technology, the utility model provides a lithium battery assembly shell limiting device.

[0004] The technical solution of this utility model is as follows:

[0005] A lithium battery assembly shell limiting device includes a base capable of placing a cell shell, a plurality of columns mounted on the base, and the plurality of columns are arranged in a rectangular shape, and a fixing plate is mounted on the top of the plurality of columns;

[0006] A movable plate is provided below the fixed plate, and the upright column passes through the movable plate, and the two are slidably connected. A telescopic cylinder is provided at the upper end of the fixed plate, and the output end of the telescopic cylinder vertically passes through the fixed plate downward and is connected to the movable plate;

[0007] A driving motor is installed on one side of the movable plate, and the output end of the driving motor is connected to a screw, and the screw is provided with two sections of reverse threads, through which two first clamping plates are connected, which can fix the battery cell group, and the first clamping plate vertically penetrates the movable plate downward, and a sliding groove for moving the first clamping plate is provided on the movable plate.

[0008] In order to improve the stability of placing the battery cell shell on the base, a clamp is provided on the base to limit the position of the battery cell shell.

[0009] The specific design of the clamp is that the clamp includes two second clamping plates, and the second clamping plates are fixed to the base through multiple groups of bolts.

[0010] In order to adapt to the fixation of battery cell shells of different sizes, multiple groups of fixing holes are provided on the base, and the fixing holes are symmetrically provided with respect to the center line of the upper end surface of the base.

[0011] In order to completely push the battery cell group into the battery cell housing, a push block is provided at the bottom of the movable plate, and the push block is located between the two first clamping plates.

[0012] In order to make the telescopic cylinder drive the movable plate to move more smoothly, a shaft sleeve is provided between the movable plate and the column. The movable plate is fixed to the shaft sleeve, and the shaft sleeve is slidably connected to the column.

[0013] In order to provide limited support for the movable plate, support columns are provided at both ends of the base, and studs are connected to the bottoms of the support columns, and the studs are threadedly connected to the base.

[0014] In order to cushion the movable plate when it descends to the bottom, buffers are provided at both ends of the movable plate, the telescopic end is arranged vertically downward, and the two buffers are respectively coaxially arranged with the two support columns.

[0015] In order to realize the control of the telescopic rod and the driving motor, an electric control box is provided on the fixed plate, and the telescopic cylinder is electrically connected to the driving motor. Two groups of button boxes are provided on the base, both of which are electrically connected to the electric control box to control the on and off of the telescopic cylinder and the driving motor respectively.

[0016] The beneficial effects of the present invention are as follows: the present invention is a lithium battery assembly shell limiting device, which firstly designs a movable plate, and fixes the battery cell group through two first clamping plates at the bottom of the movable plate, and secondly designs a clamp on the base, and fixes the battery cell shell through two second clamping plates, and cooperates with the telescopic cylinder to push the battery cell group to move toward the base along with the movable plate, and then the battery cell group can be inserted into the battery cell shell, replacing the manual lithium battery assembly shell form, effectively reducing accidental injuries to workers' arms during the shell installation process, saving physical strength for manual installation of lithium battery packs, and improving the efficiency of lithium battery assembly shells, and the spacing between the first clamping plates can be adjusted by driving the motor in conjunction with the lead screw, and the second clamping plate can adjust the distance between the second clamping plates by cooperating with different fixing holes, so that the fixation of battery cell groups and battery cell shells of different sizes can be met, thereby improving the practicality of the present device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not to be considered as limiting the present invention.

[0018] In the attached figure:

[0019] Figure 1 Schematic diagram of the overall structure of the limiting device;

[0020] Figure 2 It is a cross-sectional view of the limiting device;

[0021] Figure 3 It is a top view of the partial structure of the limiting device;

[0022] Figure 4 Schematic diagram of the buffer position;

[0023] The components represented by the reference numerals in the figure are:

[0024] 1. Battery cell housing; 2. Base; 3. Column; 4. Fixed plate; 5. Movable plate; 6. Telescopic cylinder; 7. Drive motor; 8. Screw; 9. First clamping plate; 10. Battery cell group; 11. Slide groove; 12. Second clamping plate; 13. Bolt; 14. Fixing hole; 15. Push block; 16. Bushing; 17. Support column; 18. Stud; 19. Buffer; 20. Electric control box; 21. Button box. DETAILED DESCRIPTION

[0025] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0026] Example

[0027] As mentioned in the background technology, when assembling existing lithium battery packs, the battery cells and the battery cell shells need to be protected. However, the existing shell installation is usually done manually. The inventor found that the above method has many defects during work. The shell and the battery cell can easily injure the arm by mistake, and the friction between the battery cell and the shell will make the shell installation more laborious and the shell installation efficiency is slow. Therefore, the inventor used existing components in the factory to design a limit device, which can fix the battery cell and the shell separately and can drive the battery cell to be inserted into the shell. The following is a detailed explanation with reference to the drawings.

[0028] This embodiment provides a lithium battery assembly shell limiting device, see Figure 1 , including a base 2 on which a battery cell casing 1 can be placed, and a ground support block is provided at the bottom of the base 2, which is supported on the ground or a workbench. When the battery cell casing 1 is fixed, the open end faces upward. Specifically, the fixation of the battery cell casing 1 is mainly achieved by a clamp, which can clamp and limit the battery cell casing 1. Specifically, the clamp includes two second plywood 12, and the second plywood 12 is fixed to the base 2 by multiple sets of bolts 13, and the battery cell casing 1 is fixed between the two second plywood 12.

[0029] On the basis of the above structure, the base 2 is provided with multiple groups of fixing holes 14, each group of fixing holes 14 includes three, and the fixing holes 14 are symmetrically opened with respect to the center line of the upper end surface of the base 2, that is, they are used to install two second plywoods 12 respectively, so that the two second plywoods 12 are symmetrical with respect to the center of the upper end surface of the base 2, and then the battery housing is fixed to the middle position of the upper end surface of the base 2.

[0030] In this embodiment, a plurality of columns 3 are installed on the base 2, and the plurality of columns 3 are arranged in a rectangular shape. In this solution, four columns 3 are provided, and a fixed plate 4 is installed on the top of the plurality of columns 3, and a movable plate 5 is provided below the fixed plate 4, and the column 3 passes through the movable plate 5, and the two are slidably connected. Moreover, a shaft sleeve 16 is provided between the movable plate 5 and the column 3, and the movable plate 5 is fixed to the shaft sleeve 16, and the shaft sleeve 16 is slidably connected to the column 3. By providing the shaft sleeve 16, the friction between the movable plate 5 and the column 3 can be reduced when sliding up and down, thereby improving the moving speed of the movable plate 5.

[0031] In order to fix the battery pack 10, Figure 2 and Figure 3 A driving motor 7 is installed on one side of the movable plate 5. Specifically, a mounting bracket is provided on one side of the movable plate 5, and the driving motor 7 is installed on the mounting bracket. The output end of the driving motor 7 is connected with a screw 8, which is located above the movable plate 5 and is rotatably connected to the shaft seat at the other end. The screw 8 is provided with two sections of reverse threads, which are connected with two first clamping plates 9 through the two sections of threads, so that the battery cell group 10 can be fixed, and the first clamping plate 9 vertically downwardly passes through the movable plate 5, so that the battery cell group 10 can be fixed under the movable plate 5. A sliding groove 11 for moving the first clamping plate 9 is provided on the movable plate 5. The width of the first sliding groove 11 is consistent with the width of the first clamping plate 9. The screw 8 is driven to rotate by the driving motor 7, and then the two first clamping plates 9 are driven to move toward each other through the threads, and then the battery cell group 10 is fixed.

[0032] It should be noted that, through the symmetrical design of the fixing holes 14, the distance between the second clamps 12 can be adjusted, and then the battery cell casings 1 of different sizes can be fixed. The two first clamps 9 can be driven to move by the screw 8, and the distance between the first clamps 9 can be adjusted, thereby realizing the fixation of battery cell groups 10 of different sizes.

[0033] After the battery pack 10 enters halfway, the driving motor 7 is controlled to drive the two first clamping plates 9 to move apart and move out of the vertical space where the battery pack 1 is located. The telescopic cylinder 6 continues to push the battery pack 10 downward through the push block 15 until it is completely inserted into the battery pack 1.

[0034] On the basis of the above structure, support columns 17 are provided at both ends of the base 2, which can support the movable plate 5 when it moves to the lowest end. Since the battery cell groups 10 of different heights are inserted into the corresponding battery cell housing 1 at different heights, in order to enable the support columns 17 to support the movable plate 5 that descends to different heights, a stud is connected to the bottom of the support column 17, and the stud 18 is threadedly connected to the base 2. The height of the support column 17 can be adjusted by the stud 18.

[0035] Secondly, combined Figure 4 , buffers 19 are provided at both ends of the movable plate 5, and the buffers 18 are fixedly connected to the movable plate 5. The buffer 19 can adopt the model MACS1008H, but is not limited to this model. The telescopic end is set vertically downward, and the two buffers 19 are coaxially arranged with the two support columns 17 respectively. Before the movable plate 5 falls to the lowest height, the telescopic end of the buffer 19 first contacts and abuts against the support column 17, which can buffer the movable plate 5.

[0036] Moreover, an electric control box 20 is provided on the fixed plate 4, and the telescopic cylinder 6 is electrically connected to the drive motor 7. Two groups of button boxes 21 are provided on the base 2, both of which are electrically connected to the electric control box 20. The button box 21 can transmit control signals to the electric control box 20, and then the electric control box 20 converts them into control signals to control the on and off of the telescopic cylinder 6 and the drive motor 7.

Claims

1. A lithium battery assembly shell limiting device, comprising a base (2) capable of placing a battery cell shell (1), characterized in that: A plurality of columns (3) are installed on the base (2), and the plurality of columns (3) are arranged in a rectangular shape, and a fixing plate (4) is installed on the top of the plurality of columns (3); A movable plate (5) is provided below the fixed plate (4), and the column (3) passes through the movable plate (5), and the two are slidably connected. A telescopic cylinder (6) is provided at the upper end of the fixed plate (4), and the output end of the telescopic cylinder (6) vertically passes through the fixed plate (4) and is connected to the movable plate (5); A driving motor (7) is installed on one side of the movable plate (5), and the output end of the driving motor (7) is connected to a lead screw (8), and the lead screw (8) is provided with two sections of reverse threads, and two first clamping plates (9) are connected through the two sections of threads, which can fix the battery cell group (10), and the first clamping plates (9) vertically penetrate the movable plate (5) downward, and a sliding groove (11) for moving the first clamping plates (9) is provided on the movable plate (5).

2. The lithium battery assembly shell limiting device according to claim 1, characterized in that: The base (2) is provided with a clamp capable of limiting the position of the battery cell casing (1).

3. The lithium battery assembly shell limiting device according to claim 2, characterized in that: The clamp comprises two second clamping plates (12), and the second clamping plates (12) are fixed to the base (2) via multiple groups of bolts (13).

4. The lithium battery assembly shell limiting device according to claim 3, characterized in that: The base (2) is provided with a plurality of fixing holes (14), and the fixing holes (14) are symmetrically arranged relative to the center line of the upper end surface of the base (2).

5. The lithium battery assembly shell limiting device according to claim 1, characterized in that: A push block (15) is provided at the bottom of the movable plate (5), and the push block (15) is located between the two first clamping plates (9).

6. The lithium battery assembly shell limiting device according to claim 1, characterized in that: A shaft sleeve (16) is provided between the movable plate (5) and the column (3); the movable plate (5) and the shaft sleeve (16) are fixed, and the shaft sleeve (16) and the column (3) are slidably connected.

7. The lithium battery assembly shell limiting device according to claim 1, characterized in that: Support columns (17) are provided at both ends of the base (2), and the bottom of the support column (17) is connected to a stud (18), and the stud (18) is threadedly connected to the base (2).

8. The lithium battery assembly shell limiting device according to claim 7, characterized in that: Buffers (19) are provided through both ends of the movable plate (5), the telescopic end is arranged vertically downward, and the two buffers (19) are respectively coaxially arranged with the two support columns (17).

9. The lithium battery assembly shell limiting device according to claim 8, characterized in that: An electric control box (20) is provided on the fixed plate (4), and the telescopic cylinder (6) is electrically connected to the drive motor (7). Two groups of button boxes (21) are provided on the base (2), both of which are electrically connected to the electric control box (20) to control the on and off of the telescopic cylinder (6) and the drive motor (7) respectively.

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