Vertical extrusion mechanism for battery module

Abstract

The utility model discloses a battery module vertical extrusion mechanism which comprises an assembly workbench, an extrusion assembly table is arranged at the upper end of the assembly workbench, a module containing tray capable of horizontally moving is arranged at the upper end of the extrusion assembly table, a pressing plate is arranged above one side of the extrusion assembly table, and the other side of the extrusion assembly table is provided with a pressing plate. A supporting plate is arranged above the pressing plate, the supporting plate and the pressing plate are connected through a spring column, a pressure sensor is arranged in the spring column, the upper end of the supporting plate is connected with a connecting frame, the connecting frame is connected to the outer side face of a pressure lead screw in a threaded mode, and the upper end of the pressure lead screw is connected with the output end of a servo motor. The vertical extrusion mechanism for the battery module can effectively solve the problems of excessive extrusion, out-of-tolerance in size and the like caused by difficulty in assembling a battery cell, incapability of positioning the module and unstable pressure output in the extrusion process, greatly improves the production efficiency, and ensures the product quality and the production safety.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a vertical extrusion mechanism for battery modules. Background Technique

[0002] With the rapid development of the lithium-ion battery industry, the requirements for the automation degree, stability, consistency, etc. of production equipment in the lithium battery industry are getting higher and higher, so as to fully ensure the performance of lithium-ion batteries in terms of safety, stability, etc. Limited by equipment, the problems caused by the battery module assembly process have not been solved.

[0003] When assembling single cells into modules, it is usually manual splicing. Manual splicing cannot control the consistency of battery modules. At the same time, there are problems such as the inability to quantify the pressure and large dimensional errors after extrusion, which affect the quality and efficiency of battery production. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a vertical extrusion mechanism for battery modules, which effectively solves problems such as difficult cell assembly, inability to position the module, excessive extrusion caused by unstable pressure output during the extrusion process, and out-of-tolerance dimensions, improves production efficiency, and ensures product quality and production safety. It can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A vertical extrusion mechanism for battery modules, including an assembly workbench, an extrusion assembly table is arranged at the upper end of the assembly workbench, a horizontally movable module storage tray is arranged at the upper end of the extrusion assembly table, a pressing plate is arranged above one side of the extrusion assembly table, a support plate is arranged above the pressing plate, the support plate and the pressing plate are connected by a spring column, a pressure sensor is arranged inside the spring column, the upper end of the support plate is connected to a connecting frame, the connecting frame is threadedly connected to the outer side of a pressure lead screw, and the upper end of the pressure lead screw is connected to the output end of a servo motor.

[0006] As a preferred technical solution of the utility model, two slide rails are symmetrically arranged at the upper end of the extrusion assembly table, and the module storage tray is slidably connected to the upper ends of the slide rails.

[0007] As a preferred technical solution of the utility model, four guide columns are arranged on the upper surface of one side of the extrusion assembly table, the four corners of the support plate are respectively slidably connected to the outer sides of the corresponding guide columns, the upper ends of the guide columns are connected to a top plate, and the servo motor is installed on the upper surface of the top plate.

[0008] As a preferred technical solution of the present utility model, an optoelectronic switch mounting bracket is provided on the lower surface of the top plate. The optoelectronic switch mounting bracket is located outside the pressure lead screw. On both sides of the optoelectronic switch mounting bracket, optoelectronic switch stoppers with adjustable height positions are symmetrically installed, and an optoelectronic switch is installed on the optoelectronic switch stopper.

[0009] As a preferred technical solution of the present utility model, a brake is installed outside the output shaft of the servo motor.

[0010] As a preferred technical solution of the present utility model, universal locking wheels are provided at the lower end of the assembly workbench.

[0011] As a preferred technical solution of the present utility model, the upper surface of the assembly workbench is covered with an insulating resin board.

[0012] As a preferred technical solution of the present utility model, a control box is provided below the assembly workbench. A servo driver, a controller and an intermediate relay are arranged in the control box. The servo driver is electrically connected to the servo motor. The intermediate relay is electrically connected to the optoelectronic switch. The controller is electrically connected to the servo motor, the pressure sensor, the brake and the intermediate relay respectively.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The vertical extrusion mechanism of this battery module has a simple structure, is firm and reliable, and is convenient to use. The battery cells enter the extrusion area through the slide rails, ensuring the accurate position of the battery module during extrusion; Using a servo motor as the drive system makes the extrusion force uniform and stable; The pressure sensor monitors the transmission distance with the servo motor to accurately control the extrusion pressure and assembly dimensions, solving the technical problems of difficult battery cell assembly, inaccurate positioning, pressure fluctuation, large size deviation and low efficiency during the vertical extrusion of the module, and greatly improving the production quality and efficiency of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a front view of the present utility model;

[0016] Figure 3 is Figure 2 a top view of

[0017] In the figure: 1 assembly workbench, 2 extrusion and assembly table, 3 slide rail, 4 module storage tray, 5 guide post, 6 support plate, 7 connecting frame, 8 pressing plate, 9 spring column, 10 pressure lead screw, 11 servo motor, 12 brake, 13 optoelectronic switch mounting bracket, 14 optoelectronic switch stopper, 15 top plate, 16 control box, 17 universal locking wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments (for the convenience of description and understanding, the upper part is described as the upper part hereinafter). Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Figure 2 The above is described as the upper part for the convenience of description and understanding. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-3 , the present utility model provides a technical solution: a vertical extrusion mechanism for a battery module, including an assembly workbench 1. The structure of the assembly workbench 1 is made of stainless steel. A universal locking wheel 17 is provided at the lower end of the assembly workbench 1, which can be flexibly moved to an appropriate position for extrusion operation;

[0020] An extrusion assembly table 2 is provided at the upper end of the assembly workbench 1. Two slide rails 3 are symmetrically arranged at the upper end of the extrusion assembly table 2. A module storage tray 4 is slidably connected to the upper end of the slide rail 3, which is convenient for manual control of the movement of the module storage tray 4. A pressure plate 8 is provided above one side of the extrusion assembly table 2. A support plate 6 is provided above the pressure plate 8. The support plate 6 and the pressure plate 8 are connected by a spring column 9. A pressure sensor is arranged inside the spring column 9. The upper end of the support plate 6 is connected to a connecting frame 7. The connecting frame 7 is threadedly connected to the outer side of a pressure lead screw 10. The upper end of the pressure lead screw 10 is connected to the output end of a servo motor 11. The servo motor 11 provides a stable pressure output for the extrusion work. By controlling the lifting of the pressure plate 8 and transmitting the pressure through the pressure lead screw 10, the jerks can be reduced, and the stability of the extrusion process can be ensured. By applying pressure to the stacked battery cells through the pressure plate 8, it is convenient for the assembly and positioning of the battery cells, greatly improving the use convenience. By the feedback of the pressure sensor on the pressure applied by the pressure plate 8, it is ensured that the pressure applied each time is the same, accurately controlling the extrusion pressure and assembly dimensions, and thus ensuring the consistency of the battery module.

[0021] A control box 16 is provided below the assembly workbench 1. A servo driver, a controller and a intermediate relay are arranged inside the control box 16. The servo driver is electrically connected to the servo motor 11. The intermediate relay is electrically connected to a photoelectric switch. The controller is electrically connected to the servo motor 11, the pressure sensor, a brake 12 and the intermediate relay respectively.

[0022] Further, in order to improve the stability of the lifting process of the pressure plate 8, four guide posts 5 are arranged on the upper surface of one side of the extrusion assembly table 2. The four corners of the support plate 6 are respectively slidably connected to the outer sides of the corresponding guide posts 5. The upper ends of the guide posts 5 are connected to a top plate 15. The servo motor 11 is installed on the upper surface of the top plate 15.

[0023] Further, in order to ensure that the pressing plate 8 maintains the same lifting position each time, a photoelectric switch mounting bracket 13 is provided on the lower surface of the top plate 15. The photoelectric switch mounting bracket 13 is located outside the pressure lead screw 10. Photoelectric switch stoppers 14 with adjustable height positions are symmetrically installed on both sides of the photoelectric switch mounting bracket 13. Photoelectric switches are installed on the photoelectric switch stoppers 14. The positions of the photoelectric switch stoppers 14 can be moved up and down to adjust the positions for limit protection. The photoelectric switches are connected to the common terminal of the intermediate relay. The normally closed contact of the intermediate relay is connected in series to the power supply circuit of the reverse button. When the pressing plate 8 retracts to the limit position, the photoelectric switch is triggered, and the transmitted voltage signal causes the normally closed contact of the intermediate relay to open, canceling the reverse instruction, and the servo motor 11 stops running to complete the protection.

[0024] Further, in order to avoid pressure fluctuations caused by pressure rebound after the servo motor 11 stops, a brake 12 is installed outside the output shaft of the servo motor 11. When the brake 12 stops pressure output, it locks and positions in time to avoid pressure rebound attenuation and pressure fluctuations during assembly.

[0025] Further, in order to avoid short circuits when stacking battery cells on the assembly workbench 1, the upper surface of the assembly workbench 1 is covered with an insulating resin board.

[0026] During use: Before the equipment runs, set parameters such as the running speed, distance, and torque of the servo motor 11 through the servo driver. The module after stacking single battery cells is placed on the module storage tray 4, and the module storage tray 4 is pushed to move it directly below the pressing plate 8; the servo motor 11 rotates forward, driving the pressure lead screw 10 to rotate to press the pressing plate 8 downwards, applying a downward pressure to the battery module. The pressure sensor senses the pressure received and transmits it to the controller in the form of an analog current. When the set pressure value is reached, the servo motor 11 stops running, and the brake 12 locks to prevent pressure rebound; the operator assembles and fixes the battery module under the pressure application state. After completion, the servo motor 11 is reversed, and the pressing plate 8 of the servo motor 11 is reset. After the reset is completed, the module storage tray 4 can be pulled out to remove the assembled battery module.

[0027] The utility model uses stainless steel as the structural frame to meet the requirements of extrusion strength; designs a positioning structure, and the battery cells enter the extrusion area through the slide rail 3 to ensure the accurate position of the battery module during extrusion; uses the servo motor 11 as the drive system to make the extrusion force evenly and stably applied; monitors the transmission distance between the pressure sensor and the motor to accurately control the extrusion pressure and assembly dimensions, effectively solving process equipment problems such as difficult assembly of battery cells, inaccurate positioning during vertical extrusion of modules, pressure fluctuations, large dimensional deviations, and low efficiency, which is of great significance for improving product quality and efficiency.

[0028] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A battery module vertical extrusion mechanism, comprising an assembly workbench (1), characterized in that: An extrusion assembly table (2) is arranged at the upper end of the assembly workbench (1), a horizontally movable module holding tray (4) is arranged at the upper end of the extrusion assembly table (2), a pressure plate (8) is arranged above one side of the extrusion assembly table (2), a support plate (6) is arranged above the pressure plate (8), the support plate (6) and the pressure plate (8) are connected via a spring column (9), a pressure sensor is arranged inside the spring column (9), the upper end of the support plate (6) is connected to a connecting frame (7), the connecting frame (7) is threadedly connected to the outer side surface of a pressure screw (10), and the upper end of the pressure screw (10) is connected to the output end of a servo motor (11).

2. A battery module vertical extrusion mechanism according to claim 1, characterized in that: Two slide rails (3) are symmetrically arranged at the upper end of the extrusion assembly table (2), and the module holding tray (4) is slidably connected to the upper end of the slide rails (3).

3. A battery module vertical extrusion mechanism according to claim 1, characterized in that: Four guide pillars (5) are arranged on the upper surface of one side of the extrusion assembly table (2); the four corners of the support plate (6) are slidably connected to the outer side surfaces of the guide pillars (5) at corresponding positions; the upper ends of the guide pillars (5) are connected to the top plate (15); and the servo motor (11) is mounted on the upper surface of the top plate (15).

4. A battery module vertical extrusion mechanism according to claim 3, characterized in that: A photoelectric switch mounting frame (13) is provided on the lower surface of the top plate (15), and the photoelectric switch mounting frame (13) is located outside the pressure screw (10). Photoelectric switch baffles (14) with adjustable height are symmetrically mounted on both sides of the photoelectric switch mounting frame (13), and a photoelectric switch is mounted on the photoelectric switch baffle (14).

5. The vertical extrusion mechanism for battery modules according to claim 1, characterized in that: A holding brake (12) is installed on the outer side of the output shaft of the servo motor (11).

6. A battery module vertical extrusion mechanism according to claim 1, characterized in that: A universal locking wheel (17) is provided at the lower end of the assembly workbench (1).

7. A battery module vertical extrusion mechanism according to claim 1, characterized in that: The upper surface of the assembly workbench (1) is covered with an insulating resin plate.

8. A battery module vertical extrusion mechanism according to claim 4, characterized in that: A control box (16) is arranged below the assembly workbench (1), and a servo driver, a controller and an intermediate relay are arranged in the control box (16); the servo driver is electrically connected to the servo motor (11), the intermediate relay is electrically connected to the photoelectric switch, and the controller is electrically connected to the servo motor (11), the pressure sensor, the brake (12) and the intermediate relay respectively.

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