A pre-press device and a battery module packing apparatus

Abstract

The application belongs to the technical field of battery module packaging equipment and relates to a pre-pressing device and a battery module packaging equipment. The pre-pressing device comprises a clamping mechanism, the clamping mechanism comprises first and second fixing members oppositely arranged along a first linear direction, at least one of the first and second fixing members can move towards the other, and the first and second fixing members are used for clamping an end plate; a moving mechanism, the moving mechanism comprises a base and a first moving member connected with each other, the clamping mechanism is arranged on the first moving member, and the first moving member is used for reciprocating movement in a direction away from the base to drive the end plate to move. When the end plate is not arranged, the pre-pressing device can realize the pre-pressing of a plurality of battery cells through the reciprocating movement of the first moving member to form a battery cell group. Then, when the end plate needs to be arranged, the pre-pressing device can clamp and fix the end plate through the first and second fixing members, that is, the pre-pressing device can realize the functions of pre-pressing and end plate arrangement, thereby reducing the production cost.

Description

Technical Field

[0001] This application relates to the field of battery module packaging equipment technology, and more specifically, to a pre-compression device and battery module packaging equipment. Background Technology

[0002] Current battery modules are typically composed of multiple battery cells. Therefore, in the current battery module production process, cell stacking, pre-compression, and end-plate installation are key steps. Stacking refers to arranging multiple battery cells according to a predetermined structure to build the basic framework of the battery pack. Pre-compression involves applying pressure after stacking to enhance the fit between the cells, reduce internal gaps, and thus improve the overall performance and safety of the battery. End-plate installation, after stacking and pre-compression, uses end plates to seal the multiple battery cells to form a complete battery module.

[0003] In the prior art, after the pre-pressing of the battery cell assembly is completed, when the end plate is installed, the pre-pressed battery cell assembly needs to be placed at the end plate mounting device. Then, the end plate is manually placed at the end of the battery cell, and the position of the end plate is manually adjusted to keep the end plate position on the straight line formed by the end plate mounting device and the battery cell, so as to avoid the end plate installation exceeding the preset position. Then, the end plate is driven by a motor to move towards the battery cell to complete the end plate installation.

[0004] Therefore, existing pre-compression devices cannot achieve end plate installation, resulting in high production costs. Utility Model Content

[0005] The technical problem to be solved by the embodiments of this application is that the pre-pressing device of the prior art cannot realize end plate installation, thus resulting in high production costs.

[0006] To solve the above-mentioned technical problems, the embodiments of this application adopt the following solution: A pre-compression device for clamping and driving an end plate, comprising: A clamping mechanism, comprising a first fixing member and a second fixing member disposed opposite to each other along a first straight direction, wherein at least one of the first fixing member and the second fixing member is capable of moving relative to the other, for clamping the end plate; The motion mechanism includes a base and a first moving member connected to each other. The clamping mechanism is disposed on the first moving member. The first moving member is used to reciprocate in a direction away from the base to drive the end plate to move.

[0007] Furthermore, the clamping mechanism also includes a third fixing member and a fourth fixing member arranged opposite to each other along the second straight direction, at least one of the third fixing member and the fourth fixing member being able to move relative to the other to clamp the end plate, wherein the first straight direction and the second straight direction form an angle.

[0008] Furthermore, the third fixing member is fixedly connected to the first moving member to support the end plate, and the fourth fixing member includes two sub-fixing members, both of which are movably connected to the first moving member and are arranged opposite to each other along the first straight line direction.

[0009] Furthermore, the fourth fixing member includes a rotating shaft, a connecting part, and a third fixing part. The two ends of the connecting part are respectively connected to the rotating shaft and the fixing part. The axis of the rotating shaft is parallel to the second straight line direction and is rotatably connected to the first moving member, for driving the third fixing part to move along the second straight line direction or rotate around the rotating shaft.

[0010] Furthermore, the motion mechanism also includes a pin and a second motion member connected to each other. The second motion member is disposed at the end of the first motion member away from the clamping mechanism. The base is provided with a pin hole, and the second motion member is used to drive the pin to move toward the pin hole. When the pin is located in the pin hole, the pin is located on the movement path of the first moving member, thereby limiting the movement distance of the first moving member.

[0011] Furthermore, the first moving member moves along a third linear direction, which is perpendicular to the first linear direction. The motion mechanism also includes a third moving member connected to the base, which moves toward the first moving member along a direction perpendicular to the third linear direction to abut against and restrict the movement of the first moving member.

[0012] Furthermore, the first fixing member includes a first driving part and a first fixing part connected to each other, the first driving part being used to drive the first fixing part to move toward the second fixing member; the second fixing member includes a second driving part and a second fixing part connected to each other, the second driving part being used to drive the second fixing part to move toward the first fixing member, and the driving force of the first driving part is greater than the driving force of the second driving part.

[0013] Accordingly, this application also provides a battery module packaging device for packaging a first battery cell group and a second battery cell group, wherein the battery module packaging device includes the pre-compression device described in any of the above embodiments.

[0014] Furthermore, the battery module packaging equipment also includes a pre-compression worktable and a merging device. The merging device includes a first support member, a second support member, and a first drive member. The first support member is connected to the pre-compression worktable and is used to support the first battery cell group. The second support member is coplanar with the first support member and is disposed opposite to the first support member on the pre-compression worktable, located on the movement path of the pre-compression device. The second support member is used to support the second battery cell group. The first drive member is used to drive the second support member to reciprocate towards the first support member. The pre-compression device is connected to the pre-compression workbench and is used to move toward the first support member.

[0015] Furthermore, the battery module packaging equipment also includes a side shaping device and a driving device connected to each other. The driving device includes a transmission guide rail and a second driving component. The pre-compression worktable is disposed on the transmission guide rail, and the second driving component is used to drive the pre-compression worktable to move along the transmission guide rail. The side shaping device includes a first shaping component and a second shaping component, which are arranged opposite to each other and located on both sides of the length direction of the transmission guide rail. At least one of the first shaping component and the second shaping component can move relative to the other to compress the first battery cell group and the second battery cell group.

[0016] Compared with the prior art, the embodiments of this application have the following main advantages: When no end plate is installed, the pre-pressing device can pre-press a battery cell group formed by multiple battery cells through the reciprocating motion of the first moving part. Then, when the end plate needs to be installed, the pre-pressing device can clamp and fix the end plate through the first fixing part and the second fixing part. That is, the pre-pressing device can realize the two functions of pre-pressing and end plate installation, thereby reducing production costs. Attached Figure Description

[0017] To more clearly illustrate the solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the first pre-compression device according to an embodiment of this application; Figure 2 This is another structural schematic diagram of the first pre-compression device according to an embodiment of this application; Figure 3 This is a schematic diagram of the working state of the pre-compression device in this application embodiment, including a first pre-compression device and a second pre-compression device; Figure 4 This is a schematic diagram of the structure of the second pre-compression device according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the battery module packaging equipment according to an embodiment of this application; Figure 6 This is another structural schematic diagram of the battery module packaging equipment according to an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the second carrier and the first driving member according to an embodiment of this application; Figure 8 This is a schematic diagram of the side shaping device according to an embodiment of this application.

[0019] Figure label: 10. First cell assembly; 20. Second cell assembly; 30. End plate; 40. Loading and unloading positions; 50. Side shaping area; 60. Manual installation position; 100. First pre-pressing device; 110. First fixing component; 111. First drive unit; 112. First fixing part; 120. Second fixing component; 121. Second drive unit; 122. Second fixing part; 130. Third fixing component; 140. Sub-fixing component; 141. Rotating shaft; 142. Connecting part; 143. Third Fixed part; 200, first moving part; 300, second moving part; 400, third moving part; 500, base; 510, pin hole; 600, second pre-pressing device; 700, pre-pressing worktable; 810, transmission guide rail; 820, second driving part; 910, first bearing part; 920, second bearing part; 930, first driving part; 940, insulating bakelite layer; 1000, side shaping device; 1010, first shaping part; 1020, second shaping part. Detailed Implementation

[0020] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "joined," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] Please refer to Figures 1-3 This application provides a pre-compression device for clamping and driving an end plate 30, comprising: The clamping mechanism includes a first fixing member 110 and a second fixing member 120 disposed opposite to each other along a first linear direction (Y direction), at least one of the first fixing member 110 and the second fixing member 120 being able to move relative to the other for clamping the end plate 30. The motion mechanism includes a base 500 and a first motion member 200 connected to each other. A clamping mechanism is disposed on the first motion member 200. The first motion member 200 is used to reciprocate in a direction away from the base 500 to drive the end plate 30 to move.

[0025] In this embodiment, firstly, when the end plate 30 is not installed, the pre-pressing device can pre-press the battery cell group (first battery cell group 10 and second battery cell group 20) formed by the reciprocating motion of the first moving member 200. Then, when the end plate 30 needs to be installed, the pre-pressing device can clamp and fix the end plate 30 through the first fixing member 110 and the second fixing member 120 to ensure the positioning accuracy of the end plate 30. Next, the motion mechanism can drive the end plate 30 fixed by the clamping mechanism to move toward the battery cell group through the reciprocating motion of the first moving member 200 until the end plate 30 is fixed to the end of the battery cell group.

[0026] Therefore, the pre-compression device in this embodiment can simultaneously perform the functions of pre-compression and end plate 30 installation, thereby improving the assembly efficiency of the battery module and reducing production costs. Furthermore, it can fix the position of the end plate 30 through a clamping mechanism, reducing the need for manual fixing of the end plate 30 and preventing it from deviating from its preset position during movement, thus improving the yield and assembly efficiency of the battery module. In summary, the pre-compression device in this embodiment can improve the yield and assembly efficiency of the battery module.

[0027] It should be understood that the first fixing member 110 and the second fixing member 120 can also move relative to each other simultaneously. In this case, because the total clamping speed of the first fixing member 110 and the second fixing member 120 is increased, the time spent clamping the end plate 30 can be reduced. Further, please refer to... Figures 1-2 The clamping mechanism also includes a third fixing member 130 and a fourth fixing member arranged opposite to each other along the second straight direction (Z direction). At least one of the third fixing member 130 and the fourth fixing member can move relative to the other to clamp the end plate 30. The first straight direction and the second straight direction form an angle (the vertical angle formed by the Z axis and the Y axis in the figure).

[0028] In this embodiment, by providing a third fixing member 130 and a fourth fixing member that are positioned opposite each other along the second straight line, and a first fixing member 110 and a second fixing member 120 along the first straight line, the end plate 30 can be clamped from at least two directions to achieve a complete fixation (directly restricting the movement of the Z-axis and X-axis), thereby improving the installation stability of the end plate 30. Secondly, the multi-directional fixing method can prevent the end plate 30 from rotating or shifting during movement. Then, it ensures the positioning accuracy of the end plate 30 during installation, thereby improving the assembly quality of the battery module.

[0029] Further, please refer to Figures 1-2The third fixing member 130 is fixedly connected to the first moving member 200 and is used to support the end plate 30. The fourth fixing member includes two sub-fixing members 140, both of which are movably connected to the first moving member 200 and are arranged opposite to each other along the first straight line direction.

[0030] In this embodiment, firstly, the third fixing member 130 is fixedly connected to the first moving member 200 to support the end plate 30, while the fourth fixing member includes two sub-fixing members 140 arranged opposite each other along the first straight line direction. This design can leave a gap for the robot to place the end plate 30. Secondly, the sub-fixing members 140 fix the end plate 30 from both ends, which enhances the uniformity and stability of clamping. Then, it avoids the shaking of the end plate 30 during the installation process, and improves the operating efficiency and accuracy.

[0031] Further, please refer to Figures 1-2 The fourth fixing member includes a rotating shaft 141, a connecting part 142, and a third fixing part 143. The two ends of the connecting part 142 are respectively connected to the rotating shaft 141 and the third fixing part 143. The axis of the rotating shaft 141 is parallel to the second straight line direction and is rotatably connected to the first moving member 200 for driving the third fixing part 143 to move along the second straight line direction or rotate around the rotating shaft 141.

[0032] In this embodiment, when the end plate 30 needs to be placed, the rotating shaft 141 drives the connecting part 142 to rotate the third fixing part 143 to avoid the end plate 30 gripped by the robot arm, so as to free up the operating space for placing the end plate 30 in the Z-axis direction, ensuring that the end plate 30 can be smoothly placed on the third fixing part 130, thereby improving the automation level and placement efficiency of the pre-compression device.

[0033] Further, please refer to Figures 1-4 When using a pre-loading device, pre-loading devices can be installed on both sides of the cell assembly, for example, such as... Figure 3 As shown, a first pre-pressure device 100 and a second pre-pressure device 600 are respectively provided on both sides of the battery cell assembly. The first pre-pressure device 100 and the second pre-pressure device 600 both include a clamping mechanism and a moving mechanism. The first moving part 200 of the first pre-pressure device 100 is a cylinder, and the first moving part 200 of the second pre-pressure device 600 is an electric cylinder.

[0034] In this embodiment, the second pre-compression device 600 can be used as a movable end. It adopts an electric cylinder driven clamping mechanism. The electric cylinder is driven by a servo and can stop and compress within any range of its stroke, making the compression range compatible with the pre-compression device larger and making the force on the battery cell assembly more gentle during the compression process.

[0035] Further, please refer to Figures 1-2The first moving member 200 moves along a third linear direction (X direction), which is perpendicular to the first linear direction. The moving mechanism also includes a third moving member 400, which is connected to the base 500 and is used to move toward the first moving member 200 along a direction perpendicular to the third linear direction to abut and restrict the movement of the first moving member 200.

[0036] In this embodiment, the pre-pressing device exists in three states depending on the installation state of the end plate 30: end plate 30 not installed, end plate 30 installed, and reset state. The movement position of the first moving member 200 differs in these three states. For example, when the end plate 30 is not installed, it is at the zero point position (cylinder not activated), allowing the robot or operator to place the end plate 30 into the clamping mechanism. When the end plate 30 is installed, the first moving member 200 needs to move a certain distance to shorten the distance between itself and the battery cell assembly, facilitating further alignment of the end plate 30 and the battery cell positions.

[0037] Because the third moving part 400 can abut against and squeeze the side of the first moving part 200, the third moving part 400 can abut against the first moving part 200 when the pre-pressing device needs to be in different states, so as to restrict the movement of the first moving part 200 and maintain its stability, and avoid vibration affecting the installation accuracy of the end plate 30.

[0038] Further, please refer to Figures 1-2 The first fixing member 110 includes a first driving part 111 and a first fixing part 112 connected to each other. The first driving part 111 is used to drive the first fixing part 112 to move toward the second fixing member 120. The second fixing member 120 includes a second driving part 121 and a second fixing part 122 connected to each other. The second driving part 121 is used to drive the second fixing part 122 to move toward the first fixing member 110. The driving force of the first driving part 111 is greater than the driving force of the second driving part 121.

[0039] In this embodiment, when clamping the end plate 30, the side with the large driving force (the driving force of the first driving part 111) moves first to initially position the end plate 30, and the side with the small driving force (the driving force of the second driving part 121) moves later, which can achieve the effect of positioning first and then fine adjustment.

[0040] Accordingly, please refer to Figures 5-8 This application also provides a battery module packaging device for packaging a first cell group 10 and a second cell group 20. The battery module packaging device includes a pre-compression device according to any of the above embodiments.

[0041] In this embodiment, since the battery module packaging equipment includes the pre-compression device of any of the above embodiments, the battery module packaging equipment of this embodiment can simultaneously perform the functions of pre-compression and end plate 30 installation, thereby improving the assembly efficiency of the battery module; furthermore, it can also fix the position of the end plate 30 through the clamping mechanism, thereby reducing the steps of manually fixing the end plate 30 and preventing the end plate 30 from deviating from the preset position during movement, thus improving the yield and assembly efficiency of the battery module. In summary, the battery module packaging equipment of this embodiment can improve the yield and assembly efficiency of the battery module.

[0042] Further, please refer to Figures 1-4 The battery module packaging equipment includes two pre-compression devices (first pre-compression device 100 and second pre-compression device 600) arranged opposite to each other. The motion mechanism of one of the pre-compression devices (first pre-compression device) also includes a pin (not shown in the figure) and a second moving part 300 connected to each other. The second moving part 300 is disposed at the end of the first moving part 200 away from the clamping mechanism. The base 500 is provided with a pin hole 510. The second moving part 300 is used to drive the pin to move toward the pin hole 510. When the pin is in the pin hole 510, the pin is on the movement path of the first moving member 200, so as to limit the movement distance of the first moving member 200.

[0043] In this embodiment, with Figure 3 For example, Figure 3 The first pre-compression device 100 is equipped with a pin and a second moving component 300. Since the electric cylinder's driving force is greater than that of the pneumatic cylinder, when the electric cylinder of the second pre-compression device 600 compresses the battery cell assembly, its force may exceed the movement range of the pneumatic cylinder of the first pre-compression device 100, potentially causing cylinder damage. In this case, the pin can be inserted into the base 500 to prevent the first moving component 200 in the first pre-compression device 100 from retracting under a large reaction force, thus preventing the first moving component 200 from exceeding its movement range and being damaged. Therefore, the pre-compression device of this embodiment can prevent the first moving component 200 from exceeding its movement range and being damaged when subjected to a large force.

[0044] When the pre-compression device performs pre-compression work, it can set a platform at the end of the battery pack furthest from the pre-compression device. The platform can abut against the battery pack, so that when the first moving part 200 drives the battery pack towards the platform, the platform can abut against the battery pack, so that the battery pack is subjected to forces from both ends, thereby achieving the pre-compression effect. When assembling the end plates 30, the pre-compression device can also set a platform at the end of the battery pack furthest from the pre-compression device, with the end plates 30 fixed on the platform (the fixing method can be clamping, end plate embedding in grooves, etc.). In this case, when the first moving part 200 drives the battery pack towards the platform, the end plates 30 on the platform will abut against the battery pack, thereby realizing the installation of the end plates on both sides of the battery pack. When assembling the end plates 30, the pre-compression device can also... Figure 3 As shown, pre-pressure devices are installed at both ends of the battery cell assembly. At this time, the two pre-pressure devices can drive the end plate 30 to move toward the battery cell assembly simultaneously through the first moving part, thus completing the end plate installation.

[0045] Further, please refer to Figures 3-8 The battery module packaging equipment also includes a pre-compression worktable 700 and a merging device connected to each other. The merging device includes a first support member 910, a second support member 920 and a first drive member 930. The first support member 910 is connected to the pre-compression worktable 700 and is used to support the first cell group 10. The second support member 920 is coplanar with the first support member 910 and is arranged opposite to the first support member 910 on the pre-compression worktable 700 and is located on the movement path of the pre-compression device. The second support member 920 is used to support the second cell group 20. The first drive member 930 is used to drive the second support member 920 to reciprocate towards the first support member 910. The pre-compression device is connected to the pre-compression worktable 700 and is used to move toward the first support member 910.

[0046] In this embodiment, firstly, the battery module packaging equipment integrates a pre-pressing device, which can simultaneously complete the pre-pressing and end plate 30 installation functions; secondly, the second carrier 920 can drive the second cell group 20 to approach the first cell group 10 to complete the merging of the first cell group 10 and the second cell group 20. Therefore, the battery module packaging equipment integrates a merging device, which can eliminate the manual work of merging the first cell group 10 and the second cell group 20, thereby improving the assembly efficiency of the battery module.

[0047] It should be understood that an insulating bakelite layer 940 may be provided on the side of the second carrier 920 away from the pre-pressurized worktable 700. The insulating bakelite layer 940 can prevent the blue film at the bottom of the battery cell assembly from being scratched by the rigid second carrier 920.

[0048] Further, please refer to Figures 3-8 The battery module packaging equipment also includes a side shaping device 1000 and a driving device connected to each other. The driving device is connected to the merging device and the pre-pressing worktable 700. The driving device includes a transmission guide rail 810 and a second driving member 820. The pre-pressing worktable 700 is set on the transmission guide rail 810. The second driving member 820 is used to drive the pre-pressing worktable 700 to move along the transmission guide rail 810. The side shaping device 1000 includes a first shaping member 1010 and a second shaping member 1020. The first shaping member 1010 and the second shaping member 1020 are arranged opposite to each other and are located on both sides of the length direction of the transmission guide rail 810. At least one of the first shaping member 1010 and the second shaping member 1020 can move relative to the other to squeeze the first battery cell group 10 and the second battery cell group 20.

[0049] In this embodiment, firstly, the side shaping device 1000 includes a first shaping component 1010 and a second shaping component 1020, which can squeeze the battery cell assembly from both sides; secondly, by pressurizing and shaping the module, after a separator (not marked in the figure) is provided between the first battery cell assembly 10 and the second battery cell assembly 20, the fit of the separator is ensured, and the neatness of the side of the battery module is ensured, thereby improving the overall quality and consistency of the battery module.

[0050] It should be understood that, such as Figure 6 The side shaping device 1000 and the pre-pressing worktable 700 shown can be arranged sequentially along the length direction (X direction) of the transmission guide rail 810.

[0051] Further, please refer to Figures 3-8 The processing flow of the battery module in the battery module packaging equipment of this application is as follows: S100, the first driving unit 930 controls the pre-pressing worktable 700 to move, so as to drive the pre-pressing device (including the first pre-pressing device 100 and the second pre-pressing device 600) to the upper and lower material positions 40. The mechanical claw grabs the first battery cell group 10 that has been stacked in the previous processing to the upper and lower material positions 40 and places it on the first carrier 910. S200, the first pre-pressing device 100 and the second pre-pressing device 600 press the first battery cell group 10 together, and the first driving member 930 clamps the first battery cell group 10 and moves it to the manual installation position 60. S300, by means of a mechanical gripper or by manual means, attaches the separator to the side of the first cell group 10; S400, the first driving component 930 drives the pre-compression worktable 700 to move the pre-compression device to the loading position, and the first pre-compression device 100 and the second pre-compression device 600 are opened to release the pre-compression state; S500, the mechanical gripper places the second battery cell group 20 on the second carrier 920, and the second driving member 820 drives the second carrier 920 so that the second battery cell group 20 is close to the first battery cell group 10. At this time, the partition is located between the first battery cell group 10 and the second battery cell group 20. S600, the first driving component 930 drives the pre-compression device to the manual installation position 60 by driving the pre-compression worktable 700, and the first pre-compression device 100 and the second pre-compression device 600 are opened. S700, a person or a robot arm places the end plate 30 onto the first pre-compression device 100 and the second pre-compression device 600; S800, the first fixing member 110, the second fixing member 120, the third fixing member 130 and the fourth fixing member on the first pre-compression device 100 and the second pre-compression device 600 work together to fix the end plate 30 on the first moving member 200 of the first pre-compression device 100 and the second pre-compression device 600. S900, the first pre-pressing device 100 and the second pre-pressing device 600 move toward the first cell group 10 and the second cell group 20 to install the end plate 30 onto the end face of the first cell group 10 and the second cell group 20, thereby forming a battery module. S1000, the first driving component 930 drives the pre-pressing worktable 700 so that its battery module is located in the side shaping area 50, and the side shaping device 1000 is located in the side shaping area 50. S1100, the side shaping device 1000 moves relative to the first shaping member 1010 and the second shaping member 1020 to squeeze the side of the battery module and complete the shaping. After the side shaping is completed, the first drive unit 930 drives the pre-pressing worktable 700 to move to the upper and lower material positions 40, where the mechanical claws grab the battery module.

[0052] In this embodiment, the method can utilize the aforementioned battery module packaging equipment to achieve battery module merging, separator assembly, end plate 30 assembly, and side extrusion shaping functions on a single device. Therefore, it can effectively simplify the battery module assembly process, improve the efficiency of battery module flow on the production line, and also accommodate manual feeding. It features simple operation and flexibility.

[0053] It should be understood that the driving force sources of the first moving part 200, the second moving part 300 and the third moving part 400 and the side shaping device 1000 in this application can all be cylinders, electric cylinders or linear motors.

[0054] It is understood that the above-mentioned technical features can be used in any combination without limitation. The above embodiments only illustrate specific implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that for those skilled in the art, without departing from the concept of this utility model, the above-mentioned technical features can be freely combined, and several modifications and improvements can be made, all of which fall within the protection scope of this utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of this utility model should fall within the coverage of the claims of this utility model.

Claims

1. A pre-compression device for clamping and driving an end plate, characterized in that, include: A clamping mechanism, comprising a first fixing member and a second fixing member disposed opposite to each other along a first straight direction, wherein at least one of the first fixing member and the second fixing member is capable of moving relative to the other, for clamping the end plate; The motion mechanism includes a base and a first moving member connected to each other. The clamping mechanism is disposed on the first moving member. The first moving member is used to reciprocate in a direction away from the base to drive the end plate to move.

2. The pre-compression device according to claim 1, characterized in that, The clamping mechanism further includes a third fixing member and a fourth fixing member arranged opposite to each other along the second straight direction. At least one of the third fixing member and the fourth fixing member is capable of moving relative to the other to clamp the end plate. The first straight direction and the second straight direction form an angle.

3. The pre-compression device according to claim 2, characterized in that, The third fixing member is fixedly connected to the first moving member and is used to support the end plate. The fourth fixing member includes two sub-fixing members, both of which are movably connected to the first moving member and are arranged opposite to each other along the first straight line direction.

4. The pre-compression device according to claim 2, characterized in that, The fourth fixing member includes a rotating shaft, a connecting part, and a third fixing part. The two ends of the connecting part are respectively connected to the rotating shaft and the fixing part. The axis of the rotating shaft is parallel to the second straight line direction and is rotatably connected to the first moving member, for driving the third fixing part to move along the second straight line direction or rotate around the rotating shaft.

5. The pre-compression device according to claim 1, characterized in that, The first moving member moves along a third linear direction, which is perpendicular to the first linear direction. The moving mechanism also includes a third moving member connected to the base, which moves toward the first moving member along a direction perpendicular to the third linear direction to abut and restrict the movement of the first moving member.

6. The pre-compression device according to claim 1, characterized in that, The first fixing member includes a first driving part and a first fixing part connected to each other. The first driving part is used to drive the first fixing part to move toward the second fixing member. The second fixing member includes a second driving part and a second fixing part connected to each other. The second driving part is used to drive the second fixing part to move toward the first fixing member. The driving force of the first driving part is greater than the driving force of the second driving part.

7. A battery module packaging device for packaging a first cell group and a second cell group, characterized in that, The battery module packaging equipment includes the pre-compression device as described in any one of claims 1 to 6.

8. The battery module packaging equipment according to claim 7, characterized in that, The battery module packaging equipment includes two pre-compression devices arranged opposite to each other. The motion mechanism of one of the pre-compression devices includes a pin and a second moving part connected to each other. The second moving part is disposed at the end of the first moving part away from the clamping mechanism. The base is provided with a pin hole. The second moving part is used to drive the pin to move toward the pin hole. When the pin is located in the pin hole, the pin is located on the movement path of the first moving member, thereby limiting the movement distance of the first moving member.

9. The battery module packaging equipment according to claim 7, characterized in that, The battery module packaging equipment also includes a pre-compression worktable and a merging device connected to each other. The merging device includes a first support member, a second support member, and a first drive member. The first support member is connected to the pre-compression worktable and is used to support the first battery cell group. The second support member is coplanar with the first support member and is disposed opposite to the first support member on the pre-compression worktable and located on the movement path of the pre-compression device. The second support member is used to support the second battery cell group. The first drive member is used to drive the second support member to reciprocate towards the first support member. The pre-compression device is connected to the pre-compression workbench and is used to move toward the first support member.

10. The battery module packaging equipment according to claim 9, characterized in that, The battery module packaging equipment also includes a side shaping device and a driving device connected to each other. The driving device is connected to the merging device and the pre-pressing worktable. The driving device includes a transmission guide rail and a second driving component. The pre-pressing worktable is disposed on the transmission guide rail. The second driving component is used to drive the pre-pressing worktable to move along the transmission guide rail. The side shaping device includes a first shaping component and a second shaping component, which are arranged opposite to each other and located on both sides of the length direction of the transmission guide rail. At least one of the first shaping component and the second shaping component can move relative to the other to compress the first battery cell group and the second battery cell group.

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