Battery cell module pressurizing and shaping into pack box equipment

Abstract

The application provides a device for pressing and shaping an electric cell module into a PACK box, comprising: a rack; an X-direction moving mechanism and a Y-direction moving mechanism mounted on the rack; a Z-direction lifting mechanism mounted on the Y-direction moving mechanism; a rotating mechanism mounted on the execution end of the Z-direction lifting mechanism; a multi-direction pressing and shaping mechanism mounted on the rotating mechanism, used for pressing and shaping the electric cell module in three directions of length, width and height; a suction and holding mechanism integrated on the multi-direction pressing and shaping mechanism, used for keeping the flatness of the electric cell module in the height direction before the electric cell module is put into the box; and a control mechanism electrically connected with the X-direction moving mechanism, the Y-direction moving mechanism, the Z-direction lifting mechanism, the rotating mechanism, the multi-direction pressing and shaping mechanism and the suction and holding mechanism, used for controlling the cooperative operation of the mechanisms. The embodiment of the application can improve the automation degree of the pressing and shaping and accurate putting into the box of the electric cell module, improve the battery energy density ratio and the production efficiency.

Description

Technical Field

[0001] This application relates to the field of new energy battery production equipment technology, specifically to a device for pressurizing and shaping battery cell modules into a PACK box. Background Technology

[0002] With the popularization and promotion of new energy electric vehicles, driving range has become one of the key factors restricting its further market development. Improving the energy density of the power battery system, that is, accommodating more effective battery cells in a unit volume of battery pack, is the core technical approach to extending the driving range of electric vehicles.

[0003] Currently, a key process in the manufacturing of power battery packs is the efficient, precise, and damage-free assembly of a large number of battery cells into the pack housing. Traditional packing methods or equipment generally suffer from low efficiency, insufficient positioning accuracy, and low automation, making it difficult to meet the new process requirements of high-energy-density batteries for compact and integrated cell layouts. Furthermore, during assembly, cell modules are prone to quality defects such as impacts, scratches, or improper placement due to unstable clamping, lack of effective flatness maintenance, and off-center load compensation measures. This not only affects the product yield but also limits the improvement of the overall energy density of the battery system.

[0004] Therefore, there is an urgent need in this field for a cell assembly equipment that combines high precision, high efficiency and high reliability, capable of simultaneously completing the pressurization and shaping of cell modules and precise placement into the box, in order to solve the shortcomings of the existing technologies and meet the needs of modern large-scale power battery production. Summary of the Invention

[0005] The purpose of this application is to provide a device for pressurizing and shaping battery cell modules into PACK boxes, which can improve the automation level of pressurizing and shaping battery cell modules and accurate box insertion, and improve the battery energy density ratio and production efficiency.

[0006] To address the aforementioned technical problems, this application provides, in one aspect, a device for pressurizing and shaping battery cell modules into a PACK box, comprising: a frame; an X-axis moving mechanism and a Y-axis moving mechanism mounted on the frame; a Z-axis lifting mechanism mounted on the Y-axis moving mechanism; a rotating mechanism mounted on the execution end of the Z-axis lifting mechanism; a multi-directional pressurizing and shaping mechanism mounted on the rotating mechanism for pressurizing and shaping the battery cell module in three directions: length, width, and height; an adsorption and holding mechanism integrated into the multi-directional pressurizing and shaping mechanism for maintaining the flatness of the battery cell module in the height direction before it enters the box; and a control mechanism electrically connected to the X-axis moving mechanism, Y-axis moving mechanism, Z-axis lifting mechanism, rotating mechanism, multi-directional pressurizing and shaping mechanism, and adsorption and holding mechanism for controlling the coordinated operation of each mechanism.

[0007] Optionally, the device further includes a visual positioning mechanism; the visual positioning mechanism is mounted on the multi-directional pressure shaping mechanism and is used to identify the position and angle of the battery cell module and the PACK box.

[0008] Optionally, the device further includes a fall protection mechanism; the fall protection mechanism includes a fall protection rack with multiple fall protection notches fixed to the Z-axis lifting mechanism, a fall protection cylinder mounted on the Y-axis support mounting base of the Y-axis moving mechanism, and a fall protection rod driven therefrom, the fall protection rod being controllably extended and engaged with the fall protection notches to achieve mechanical locking.

[0009] Optionally, the X-axis moving mechanism, the Y-axis moving mechanism, and the Z-axis lifting mechanism all adopt a transmission method in which a servo motor drives a gear and rack meshing.

[0010] Optionally, the rotating mechanism includes: a slewing support connecting plate, fixedly connected to the Z-axis lifting mechanism; a slewing bearing having a fixed ring and a rotating ring, the fixed ring being fixedly connected to the slewing support connecting plate, and the rotating ring being sleeved outside the fixed ring; and a slewing motor fixedly mounted on the slewing support connecting plate, the output shaft of which is provided with a gear, the gear meshing with the rotating ring to drive the multi-directional pressure shaping mechanism to rotate as a whole, thereby achieving angle compensation under off-center load conditions.

[0011] Optionally, the multi-directional pressurizing and shaping mechanism includes: a length-direction pressurizing mechanism, comprising a reference side and a drive side; the reference side employs a cylinder-driven cam mechanism to provide a fixed reference positioning point; the drive side employs a clamping plate driven by a servo-electric cylinder for pressurizing the cell module in the length direction towards the reference side; a width-direction pressurizing mechanism, comprising two symmetrically arranged servo-electric cylinders, the piston rod ends of which are connected to the clamping plate; the servo-electric cylinders are configured to move synchronously in opposite directions to perform centering positioning and clamping pressurization of the cell module, or to move synchronously in opposite directions to release the cell module; and a height-direction pressurizing mechanism, employing at least one servo-electric cylinder vertically mounted on the rotating mechanism, its piston rod pointing downwards and connected to the mounting frame of the length-direction pressurizing mechanism and the width-direction pressurizing mechanism, for pressing the cell module downwards into the PACK box and performing a pressure holding operation after the cell module is placed in the box.

[0012] Optionally, the cam is a circular cam connected to the piston rod of the cylinder, and the reference side is provided with an inclined surface that cooperates with the cam. When the cylinder extends, it pushes the cam to move along the inclined surface and pushes the inclined surface forward to move it to the reference positioning point.

[0013] Optionally, the servo cylinder of the height-direction pressurization mechanism has a built-in or external pressure sensor. The control mechanism is configured to control the servo cylinder to perform a pressure-holding operation after the battery cell module is pressed into the PACK box, and to monitor the pressure curve of the pressure sensor to determine whether the battery cell module is in a normal state when it enters the box.

[0014] Optionally, the adsorption and holding mechanism includes: multiple vacuum suction cups or negative pressure adsorption units, arranged in an array on the mounting frame of the length direction pressurization mechanism and the width direction pressurization mechanism; a vacuum generating device connected to the vacuum suction cups or negative pressure adsorption units; the adsorption and holding mechanism is configured such that: after the width direction pressurization mechanism and the length direction pressurization mechanism have completed clamping the battery cell module, the top of the battery cell module is adsorbed by the vacuum suction cups or negative pressure adsorption units to overcome the gravity of the battery cell module and maintain its flatness in the Z direction.

[0015] Optionally, the Z-axis lifting mechanism includes a lifting servo motor, a lifting column, a lifting guide rail slider sleeved on the guide rail of the lifting column, and a rack fixed on the lifting column; the output shaft of the lifting servo motor is provided with a gear that meshes with the rack; the lifting guide rail slider is fixed on the Y-axis support mounting seat of the Y-axis moving mechanism to drive the Z-axis lifting mechanism to move up and down in the vertical direction.

[0016] Compared with the prior art, the embodiments of this application have the following advantages:

[0017] Through precise transmission via X, Y, and Z-axis servo motors and rack and pinion systems, combined with visual positioning and rotational compensation, rapid and accurate positioning and placement of battery cell modules into the pack are achieved. This significantly improves the automation level and product qualification rate of the pressure shaping and precise packing of battery cell modules, thereby increasing production efficiency. Independent servo pressure mechanisms in the length, width, and height directions precisely shape the battery cell modules, ensuring their dimensions meet the stringent requirements of the pack, adapting to the demanding processes of high-energy-density batteries, and improving the battery's energy density ratio. Attached Figure Description

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is a schematic diagram of a device for pressurizing and shaping a battery cell module into a PACK box according to an embodiment of this application;

[0020] Figure 2This is a schematic diagram of a device for pressurizing and shaping a battery cell module into a PACK box according to another embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of a multi-directional pressure shaping mechanism according to an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the reference side according to an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the reference side according to an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of a device for pressurizing and shaping a battery cell module into a PACK box according to another embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the structure of a multi-directional pressure shaping mechanism according to an embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the structure of a multi-directional pressure shaping mechanism according to an embodiment of this application.

[0027] Figure label:

[0028] Frame 1; X-axis rack 11; Y-axis rack 12; X-axis moving mechanism 2; X-axis slider 21; Y-axis moving mechanism 3; Y-axis support mounting base 31; Y-axis slider 32; Z-axis lifting mechanism 4; lifting column 41; rotating mechanism 5; slewing support connecting plate 51; slewing bearing 52; fixed ring 521; rotating ring 522; adsorption holding mechanism 6; visual positioning mechanism 7; anti-fall mechanism 8; weight reduction mechanism 9; weight reduction cylinder 91; cylinder connecting rod 92; cylinder connecting seat 93; length direction pressurizing mechanism 10; reference side 101; cam 102; inclined plane 104; fixed surface 103; width direction pressurizing mechanism 20; clamping plate 201; height direction pressurizing mechanism 30. Detailed Implementation

[0029] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that the following description covers various aspects of embodiments within the scope of the appended claims. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0031] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0032] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0033] like Figure 1As shown, this application embodiment provides a device for pressurizing and shaping battery cell modules into a PACK box, including: a frame 1; an X-axis moving mechanism 2 and a Y-axis moving mechanism 3 mounted on the frame 1; a Z-axis lifting mechanism 4 mounted on the Y-axis moving mechanism 3; a rotating mechanism 5 mounted on the execution end of the Z-axis lifting mechanism 4; a multi-directional pressurizing and shaping mechanism mounted on the rotating mechanism 5, which is used to pressurize and shape the battery cell module in three directions: length, width, and height; an adsorption and holding mechanism 6, integrated on the multi-directional pressurizing and shaping mechanism, used to maintain the flatness of the battery cell module in the height direction before it is placed into the box; and a control mechanism, electrically connected to the X-axis moving mechanism 2, the Y-axis moving mechanism 3, the Z-axis lifting mechanism 4, the rotating mechanism 5, the multi-directional pressurizing and shaping mechanism, and the adsorption and holding mechanism 6, used to control the coordinated operation of each mechanism.

[0034] In this embodiment, both the X-axis moving mechanism 2 and the Y-axis moving mechanism 3 can employ a servo motor-driven gear and rack transmission method. By driving the gear with a servo motor, the gear rolls on a rack fixed to the frame 1, achieving precise movement of the equipment in the horizontal plane (i.e., X and Y directions). The Z-axis lifting mechanism 4 can also employ a servo motor-driven gear and rack method to achieve vertical (Z-axis) lifting. Compared to traditional screw drives, gear and rack transmission offers faster movement speeds, longer strokes, and no length limitations, making it particularly suitable for applications requiring a wide range and high clock speeds.

[0035] Specifically, such as Figure 1 and Figure 2 As shown, the X-axis moving mechanism 2 includes an X-axis slider 21, which is slidably connected to an X-axis rack 11 fixed on the frame 1 to achieve X-axis movement of the equipment. The Y-axis moving mechanism 3 includes a Y-axis support mounting base 31 and a Y-axis slider 32. The Y-axis support mounting base 31 serves as the core load-bearing frame and is connected to the lifting guide rail slider of the Z-axis lifting mechanism 4. Driven by the lifting guide rail slider, the Z-axis lifting mechanism 4 moves up and down in the vertical direction (Z-axis). The Y-axis slider 32 is slidably connected to the Y-axis rack 12 on the frame 1 to drive the entire equipment to move in the Y-axis direction. Specifically, the Y-axis slider 32 is installed at the bottom of the Y-axis support mounting base 31 and forms a sliding pair with the Y-axis rack 12 on the frame 1. Driven by an external drive system (such as a servo motor and synchronous belt, not shown in the figure), the X-axis slider 21 and the Y-axis slider 32 can slide along the X-axis rack 11 and the Y-axis rack 12 respectively, thereby accurately driving the entire equipment to move in the X or Y direction.

[0036] like Figure 2As shown, the Z-axis lifting mechanism 4 includes a lifting column 41 and a lifting guide rail slider (not shown in the figure) sleeved on the guide rail of the lifting column 41. The lifting guide rail slider is fixedly connected to the Y-axis support mounting base 31 of the Y-axis moving mechanism 3. When the lifting guide rail slider moves up and down, it drives the Z-axis lifting mechanism 4 and the rotating mechanism 5 connected to the Z-axis lifting mechanism 4 to rise and fall together in the vertical direction (Z direction). The Z-axis lifting mechanism also includes a rack and a lifting servo motor as a power source. The rack is fixed on the lifting column 41. The lifting servo motor can be fixed on the Y-axis support mounting base 31. The output shaft of the lifting servo motor is provided with a gear that meshes with the rack. During operation, the lifting servo motor drives the gear to rotate, thereby causing relative movement between the Y-axis support mounting base 31 and the moving lifting guide slider. Since the lifting movement of the Y-axis support mounting base 31 is restricted by the frame 1, the lifting guide slider ultimately drives its connecting components (including the entire Z-axis lifting mechanism 4 except for the lifting column 41, the rotating mechanism 5 connected to it, the multi-directional pressure shaping mechanism connected to the rotating mechanism 5, the adsorption holding mechanism 6, and the gripped battery cell module) to rise and fall together along the Z-axis.

[0037] In other embodiments, the lifting drive assembly of the Z-axis lifting mechanism 4 can also be implemented using a synchronous belt with a synchronous pulley, or a ball screw instead of a gear and rack.

[0038] like Figure 2 and Figure 3 As shown, the rotating mechanism 5 includes a slewing support connecting plate 51, a slewing bearing 52, and a slewing motor. The slewing support connecting plate 51 is fixedly connected to the Z-axis lifting mechanism 4; the slewing bearing 52 is the core component of the rotating mechanism 5, which has a fixed ring 521 and a rotating ring 522. The fixed ring 521 is fixedly connected to the slewing support connecting plate 51 by bolts. The rotating ring 522 can be sleeved on the outside of the fixed ring 521 through a bearing and can rotate relative to it. The multi-directional pressure shaping mechanism is connected to the rotating ring 522; the slewing motor is fixedly mounted on the slewing support connecting plate 51, and its output shaft is equipped with a gear. The gear meshes with the rotating ring 522 of the slewing bearing 52. The control mechanism drives the slewing motor to rotate, which, through gear transmission, drives the entire rotating ring 522 and the multi-directional pressure shaping mechanism connected to it to rotate 360° as a whole, achieving angle compensation under off-center load conditions. In this embodiment, the rotary motor is the power source for the meshing and rotation of the slewing bearing 52. The rotation enables the battery cell module to be assembled in different directions with positive and negative polarities. The slewing bearing 52 ensures high rotational accuracy and rigidity, and can guarantee the smoothness of the rotational motion, reducing vibration and offset.

[0039] Preferably, a rotation sensor (such as an absolute encoder or an angle sensor) can be installed on the slewing support connecting plate 51 to detect the rotation angle of the rotating ring 522. This ensures that the rotation is detected in place, making the rotation result more accurate and meeting the stringent requirements for precise assembly of the battery cell module.

[0040] Preferably, the device for pressurizing and shaping the battery cell module into the PACK box in this application embodiment further includes a visual positioning mechanism 7, as shown in the reference. Figure 3 As shown, the visual positioning mechanism 7 can be an industrial camera, mounted on the multi-directional pressure shaping mechanism, used to take pictures after grasping the battery cell module and before placing it into the PACK box, to identify the position and angular deviation of the battery cell module and the PACK box. When the visual positioning mechanism 7 detects an angular deviation in the battery cell module or the PACK box, the control mechanism (such as a PLC) can instruct the rotary motor to make a slight angular adjustment to compensate for the deviation, ensuring that the battery cell module and the opening of the PACK box are completely parallel, achieving precise placement into the box without collision or scratches.

[0041] In a preferred embodiment, reference Figure 2 The equipment for pressurizing and shaping the battery cell modules into the PACK box also includes a fall protection mechanism 8. The fall protection mechanism 8 includes a fall protection rack 81, a fall protection cylinder 82, and a fall protection rod driven by the fall protection cylinder 82. The fall protection rack 81 is fixed to the Z-axis lifting mechanism 4 (e.g., fixed to the lifting column 41), and has multiple fall protection notches. The fall protection cylinder 82 is fixed to the Y-axis support mounting base 31 of the Y-axis moving mechanism 3. The fall protection rod can be controllably extended and engaged in the fall protection notches or retracted to disengage from the fall protection notches. Under normal conditions, the fall protection rod extends and engages in the notches of the fall protection rack 81 to achieve mechanical locking, preventing the Z-axis lifting mechanism 4 and its connected components from falling in the event of power failure or gas failure, greatly improving the safety of the equipment. When the Z-axis lifting mechanism 4 is lifting vertically, the anti-fall cylinder 82 drives the anti-fall rod to retract and disengage from the anti-fall rack 81 to avoid affecting the operation of the lifting mechanism; the multiple anti-fall notches on the anti-fall rack 81 enable adaptive locking at different heights, improving safety.

[0042] Preferably, the fall arrestor 8 also includes multiple sensors, which can be mounted near the fall arrestor rack 81 via sensor brackets to detect whether the fall arrestor bar has reached the preset fall arrest notch. This embodiment allows the status signal of the fall arrestor 8 to be connected to the control mechanism, enabling real-time monitoring and feedback of the safety status, making the equipment operation more intelligent and reliable, and facilitating fault diagnosis and maintenance.

[0043] In other alternative embodiments, the fall arrestor 8 can also be implemented using an eccentric wheel self-locking mechanism, an electromagnetic safety clamp, a wedge block self-locking device, etc., which will not be described in detail here.

[0044] Preferred, such as Figure 2 As shown, the equipment for pressurizing and shaping the battery cell modules into the PACK box also includes a weight reduction mechanism 9. The weight reduction mechanism 9 is connected between the Y-axis support mounting base 31 and the rotary support connecting plate 51, and is used to balance most of the weight of the multi-directional pressurizing and shaping mechanism and the battery cell modules being gripped. By balancing the load through the weight reduction mechanism 9, the actual load on transmission components such as servo motors and gear racks is significantly reduced, making the equipment operate more smoothly and easily. At the same time, it reduces the risk of component wear and failure due to overload, and improves the equipment's lifespan and reliability.

[0045] Specifically, the weight-reducing mechanism 9 includes a weight-reducing cylinder 91, a cylinder connecting rod 92, and a cylinder connecting seat 93. The cylinder body end of the weight-reducing cylinder 91 is hinged to the Y-direction support mounting base 31, and the piston rod end of the weight-reducing cylinder 91 is mounted on the rotary support connecting plate 51 via the cylinder connecting rod 92 and the cylinder connecting seat 93. In this embodiment, two weight-reducing cylinders 91 can be arranged in parallel (e.g., Figure 2 As shown in the diagram, the cylinder connecting seat 93 can be fixed to the rotary support connecting plate 51. The piston rod end of the weight-reducing cylinder 91 is connected to the cylinder connecting rod 92, and the cylinder connecting rod 92 is connected to the cylinder connecting seat 93. In this embodiment, two weight-reducing cylinders 91 are preferably arranged in parallel. The two cylinders share the weight of the multi-directional pressure shaping mechanism and the gripped battery cell module, avoiding the risk of falling off the Z-axis due to overload. Moreover, the dual-cylinder structure provides redundancy backup. When one cylinder fails, the other can still provide partial balancing force, resulting in higher safety.

[0046] In other alternative embodiments, the weight reduction mechanism 9 can also be implemented using existing technologies such as balance cylinders and counterweights, which will not be described in detail here.

[0047] In the embodiments of this application, such as Figure 3 As shown, the multi-directional pressurizing and shaping mechanism includes a length-direction pressurizing mechanism 10, a width-direction pressurizing mechanism 20, and a height-direction pressurizing mechanism 30. The length-direction pressurizing mechanism 10 includes a reference side 101 and a drive side; the reference side 101 adopts a cylinder-driven cam mechanism to provide a fixed reference positioning point; the drive side adopts a clamping plate driven by a servo electric cylinder for pressurizing the battery cell module in the length direction towards the reference side 101.

[0048] Specifically, in an optional embodiment, such as Figure 4 and Figure 5As shown, the cam 102 is circular and connected to the piston rod of the cylinder. An inclined surface 104, which mates with the cam 102, is provided behind the fixed surface 103 of the reference side 101. When the cylinder extends, it pushes the circular cam 102 along the inclined surface 104, causing the inclined surface 104 to move forward and pushing the entire fixed surface 103 of the reference side 101 outward, positioning it at the reference positioning point. In other embodiments, the cam 102 can also be a cam with a gradually changing working radius. For example, when the cylinder extends, it pushes the cam to rotate, and the working radius of the cam gradually increases from its minimum value, thereby pushing the reference side 101 forward to position it at the reference positioning point.

[0049] In the embodiments of this application, reference is made to Figure 6 and Figure 7 The width-direction pressurizing mechanism 20 includes two symmetrically arranged servo cylinders, with clamping plates 201 connected to the piston rod ends of the servo cylinders. The servo cylinders are configured to move synchronously towards each other to center and clamp the battery cell module, or to move synchronously away from each other to release the battery cell module. The workflow is "center first, then clamp." That is, the two servo cylinders first move synchronously towards each other, gently contacting the battery cell module from both sides to align its center with the equipment center, and then apply a preset pressure to clamp it. This method ensures the centering and dimensional consistency of the battery cell module in the width direction.

[0050] In the embodiments of this application, reference is made to Figure 3 The height-direction pressurization mechanism 30 employs at least one servo electric cylinder vertically mounted on the rotating mechanism 5. Its piston rod points downward and is connected to the mounting frame of the length-direction pressurization mechanism 10 and the width-direction pressurization mechanism 20. This mechanism is used to press the battery cell module downward into the PACK box after it is placed in the box and to perform a pressure holding operation to ensure the depth of placement in the box.

[0051] Preferably, the servo cylinder of the height-direction pressurization mechanism 30 has a built-in or external pressure sensor. The control mechanism is configured to control the servo cylinder to perform a pressure-holding operation after the battery cell module is pressed into the PACK box, and to monitor the pressure curve of the pressure sensor to determine whether the battery cell module's entry into the box is normal. During the pressure-holding stage, the control mechanism monitors the pressure curve in real time. A normal pressure curve should be maintained stably within a certain range. If a sudden drop in pressure or abnormal fluctuation occurs, it can be determined that there may be interference in entering the box or a module malfunction, thus realizing online quality monitoring of the process.

[0052] In the embodiments of this application, reference is made to Figure 7 and Figure 8The adsorption and holding mechanism 6 includes multiple vacuum suction cups or negative pressure adsorption units and a vacuum generating device. The multiple vacuum suction cups or negative pressure adsorption units are arrayed on the mounting frame of the length-direction pressurizing mechanism 10 and the width-direction pressurizing mechanism 20. The vacuum generating device is connected to the vacuum suction cups or negative pressure adsorption units. The adsorption and holding mechanism 6 is configured such that after the width-direction pressurizing mechanism 20 and the length-direction pressurizing mechanism 10 have clamped the battery cell module, the top of the battery cell module is adsorbed by the vacuum suction cups or negative pressure adsorption units to overcome the weight of the battery cell module and maintain its flatness in the Z-direction. In this embodiment, after clamping and shaping in the length and width directions, the adsorption and holding mechanism 6 is activated, and the vacuum suction cups firmly adsorb the top surface of the battery cell module. At this time, the pressure of the height-direction pressurizing mechanism 30 is released, and the weight of the module is completely overcome by the adsorption force. This effectively prevents the lower battery cell from collapsing due to the weight of the battery cell module itself during the transfer process, maintaining the flatness of the module in the Z-direction. The adsorption holding mechanism 6 of this application embodiment replaces mechanical pressure during the transfer of the battery cell module. It effectively prevents the battery cell module from collapsing due to gravity through vacuum adsorption, ensuring the flatness of the upper surface of the module before it is placed in the box, thus laying the foundation for stable placement in the box.

[0053] When using the device of this embodiment to pressurize and shape the battery cell module into the PACK box, first control the X-axis moving mechanism 2 and the Y-axis moving mechanism 3 to move the device above the battery cell module. The visual positioning mechanism 7 takes a picture to locate the position of the battery cell module. Based on the feedback result of the picture positioning, control the rotating mechanism 5 to finely adjust the angle and control the Z-axis lifting mechanism 4 to descend into place. The servo cylinder of the width direction pressing mechanism 20 is positioned in the width direction. Then, the width direction cylinder clamps the width of the battery cell module. The reference side 101 cylinder of the length direction pressing mechanism 10 extends into place, so that the fixing surface 103 of the reference side 101 is located at a reference position. The drive side cylinder presses the length of the battery cell module into place. The top adsorption holding mechanism 6 extends to hold the battery cell. The module is adsorbed to ensure the reference height of the battery cell module. The Z-axis lifting mechanism 4 rises to raise the battery cell module to a safe height. The X-axis moving mechanism 2 and the Y-axis moving mechanism 3 drive the gear rack to move back and forth and left and right to the position where the battery cell module enters the PACK box. Then, the visual positioning mechanism 7 accurately positions the PACK box. The rotating mechanism 5 finely adjusts the angle of the battery cell module according to the shooting angle. The Z-axis lifting mechanism 4 descends to the position and partially puts the battery cell module into the PACK box (10mm-20mm). The reference side cylinder 101 of the Y-axis moving mechanism 3 retracts to the position. Then, the drive side electric cylinder of the Y-axis moving mechanism 3 retracts. The pressure servo electric cylinder of the Z-axis lifting mechanism 4 pushes the battery cell module into the PACK box and maintains pressure. At the same time, the pressure curve of the pressure sensor is detected. After pressurization is completed, the pressurization cylinder of the X-axis moving mechanism 2 retracts to the fully open state, the servo cylinder of the actuator in the adsorption holding mechanism 6 retracts completely, the Z-axis lifting mechanism 4 rises to the position, the equipment is reset, and the entire process of pressurizing and shaping the battery cells into the PACK box is completed.

[0054] The device for pressurizing and shaping the battery cell module into the PACK box according to the embodiments of this application has the following advantages:

[0055] 1. High precision and high efficiency: Through the precision transmission of X, Y, and Z servo motors and gear racks, combined with visual positioning and rotation compensation, the rapid and accurate positioning and boxing of battery cell modules are achieved, which greatly improves the automation level of battery cell module pressurization and shaping and accurate boxing and the product qualification rate, thereby improving production efficiency.

[0056] 2. All-round shaping and pressurization: Through independent servo pressurization mechanisms in three directions—length, width, and height—the cell module is precisely shaped to ensure that its dimensions meet the strict requirements of the PACK box, adapt to the stringent process of high-energy-density batteries, and improve the battery energy density ratio.

[0057] 3. Reliable flatness maintenance: The adsorption holding mechanism replaces mechanical pressure during the transfer of battery cell modules. Through vacuum adsorption, it effectively prevents the modules from collapsing due to gravity, ensuring the flatness of the upper surface of the battery cell modules before they are placed in the box, thus laying the foundation for stable placement.

[0058] 4. High safety and stability: The Z-axis lifting mechanism is driven by a servo motor and equipped with an anti-fall mechanism, ensuring smooth movement and equipment safety under heavy loads. The cam mechanism on the reference side in the length direction provides a rigid reference point, ensuring the reliability of clamping.

[0059] 5. Intelligent process control: By monitoring the pressure curve of the pressure holding process in the chamber through pressure sensors, it is possible to determine in real time whether the state of the chamber is normal, thus realizing the monitoring and quality control of the process.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

[0062] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A device for pressurizing and shaping battery cell modules into a PACK box, characterized in that, include: frame; The X-axis moving mechanism and the Y-axis moving mechanism are mounted on the frame; The Z-axis lifting mechanism is installed on the Y-axis moving mechanism; A rotating mechanism installed at the actuator end of the Z-axis lifting mechanism; The multi-directional pressure shaping mechanism mounted on the rotating mechanism is used to pressure shape the battery cell module in three directions: length, width and height. An adsorption and holding mechanism, integrated into the multi-directional pressure shaping system, is used to maintain the flatness of the cell module in the height direction before it is placed into the box. The control mechanism is electrically connected to the X-axis moving mechanism, Y-axis moving mechanism, Z-axis lifting mechanism, rotating mechanism, multi-directional pressure shaping mechanism, and adsorption holding mechanism, and is used to control the coordinated operation of each mechanism.

2. The device according to claim 1, characterized in that, The device also includes: a visual positioning mechanism; The visual positioning mechanism is installed on the multi-directional pressure shaping mechanism and is used to identify the position and angle of the battery cell module and PACK box.

3. The device according to claim 1, characterized in that, The device also includes a fall protection mechanism; The fall protection mechanism includes a fall protection rack with multiple fall protection notches fixed to the Z-axis lifting mechanism, a fall protection cylinder mounted on the Y-axis support mounting base of the Y-axis moving mechanism, and a fall protection rod driven therefrom. The fall protection rod can be extended in a controlled manner and engaged with the fall protection notches to achieve mechanical locking.

4. The device according to claim 1, characterized in that, The X-axis moving mechanism, Y-axis moving mechanism, and Z-axis lifting mechanism all adopt a transmission method in which servo motors drive gears and racks to mesh.

5. The device according to claim 1, characterized in that, The rotating mechanism includes: A rotary support connecting plate is fixedly connected to the Z-axis lifting mechanism; A slewing bearing has a fixed ring and a rotating ring, the fixed ring being fixedly connected to the slewing bearing connecting plate, and the rotating ring being sleeved outside the fixed ring; A rotary motor is fixedly mounted on the rotary support connecting plate. Its output shaft is equipped with a gear, which meshes with the rotating ring to drive the multi-directional pressure shaping mechanism to rotate as a whole, thereby achieving angle compensation under off-center load conditions.

6. The device according to claim 1, characterized in that, The multi-directional pressure shaping mechanism includes: The length-direction pressurization mechanism includes a reference side and a drive side; the reference side employs a cylinder-driven cam mechanism to provide a fixed reference positioning point; the drive side employs a clamping plate driven by a servo electric cylinder for pressurizing the battery cell module in the length direction towards the reference side; the width-direction pressurization mechanism includes two symmetrically arranged servo electric cylinders, the piston rod ends of which are connected to the clamping plate; the servo electric cylinders are configured to move synchronously in opposite directions to perform centering positioning and clamping pressurization of the battery cell module, or to move synchronously in opposite directions to release the battery cell module; The height-direction pressurization mechanism employs at least one servo electric cylinder vertically mounted on the rotating mechanism, with its piston rod pointing downwards and connected to the mounting frame of the length-direction pressurization mechanism and the width-direction pressurization mechanism. This mechanism is used to press the battery cell module downwards into the PACK box and perform a pressure-holding operation after the battery cell module is placed into the box.

7. The device according to claim 6, characterized in that, The cam is a circular cam connected to the piston rod of the cylinder. The reference side is provided with an inclined surface that cooperates with the cam. When the cylinder extends, it pushes the cam to move along the inclined surface and pushes the inclined surface forward to move it to the reference positioning point.

8. The device according to claim 6, characterized in that, The servo electric cylinder of the height-direction pressurization mechanism has a built-in or external pressure sensor. The control mechanism is configured to control the servo electric cylinder to perform a pressure-holding operation after the battery cell module is pressed into the PACK box, and to monitor the pressure curve of the pressure sensor to determine whether the battery cell module is in a normal state when it enters the box.

9. The device according to claim 6, characterized in that, The adsorption and retention mechanism includes: Multiple vacuum suction cups or negative pressure adsorption units are arrayed on the mounting frame of the length direction pressurization mechanism and the width direction pressurization mechanism; A vacuum generating device connected to the vacuum suction cup or negative pressure adsorption unit; The adsorption and holding mechanism is configured such that after the width-direction pressing mechanism and the length-direction pressing mechanism have clamped the battery cell module, the top of the battery cell module is adsorbed by the vacuum suction cup or the negative pressure adsorption unit to overcome the gravity of the battery cell module and maintain its flatness in the Z direction.

10. The device according to claim 1, characterized in that, The Z-axis lifting mechanism includes a lifting servo motor, a lifting column, a lifting guide rail slider sleeved on the guide rail of the lifting column, and a rack fixed on the lifting column. The output shaft of the lifting servo motor is equipped with a gear that meshes with the rack; The lifting guide rail slider is fixed on the Y-axis support mounting base of the Y-axis moving mechanism to drive the Z-axis lifting mechanism to move up and down in the vertical direction.

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