Stacking and pre-assembling equipment suitable for battery modules of different specifications

Abstract

The utility model discloses stacking and pre-assembling equipment suitable for battery modules of different specifications, which relates to the technical field of module stacking and assembling equipment and is provided with a lifting mechanism, a lifting frame, a linear driving mechanism, a reference structure and a stacking side clamping jaw structure. The lifting frame is installed at the output end of the lifting mechanism, the reference structure and the stacking side clamping jaw structure are sequentially arranged in the conveying direction of the conveying line, the linear driving mechanism and the reference structure are installed on the lifting frame, and the stacking side clamping jaw structure is connected with the output end of the linear driving mechanism. Compared with an existing production line which needs to be provided with two battery cell module stacking grippers for feeding and discharging respectively, the battery cell stacking and pre-assembling device has the advantages that the battery cell stacking and pre-assembling of the battery cell module can be directly realized on the tray only by arranging one battery cell module stacking gripper for feeding; and the equipment cost and the equipment occupied space of battery module stacking and pre-assembling are effectively reduced, and improvement of the production efficiency and control of the production cost are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of module stacking assembly equipment, and in particular to a stacking pre-assembly equipment for battery module cells. Background Art

[0002] A battery module is a power source composed of multiple cells connected in series. Compared with traditional batteries, battery modules can provide higher voltage and have greater capacity. Battery modules are widely used in various emerging industrial fields including new energy vehicles.

[0003] In the prior art, the stacking of new energy battery modules is mostly carried out on a stacking turntable, and during the stacking work, each stacking turntable needs to be equipped with two six-axis robots to load the battery cells and unload the battery modules respectively. The overall equipment cost is high and the equipment occupies a large space.

[0004] Through prior art search, there are the following known technical solutions:

[0005] Prior art 1:

[0006] Application number: CN202321377751.6, application date: 2023.05.31, publication date (authorization): 2023.12.15.

[0007] Prior art 1 discloses a battery module stacking device, including a carrier, a feeding mechanism, a guide assembly and a conveying mechanism. The feeding mechanism is used to place a plurality of battery cells on the carrier; the carrier is used to carry and position a plurality of battery cells, the guide assembly is installed on the carrier, and the guide assembly is used to limit the position of each battery cell on the carrier, so that each battery cell gap is arranged and pre-assembled into a battery module; the carrier is also provided with a fixing mechanism for pressing the battery module, and after the fixing mechanism presses the battery module, the guide assembly is separated from the battery module; the conveying mechanism is used to move the carrier and the pressed battery module carried by the carrier. Thus, after the battery module is regularized through the coordinated action of the feeding mechanism, the carrier, the guide assembly, the fixing mechanism and the conveying mechanism, the fixing mechanism on the carrier presses the battery module, and then the guide assembly is separated from the battery module. After the battery module is welded, the fixing mechanism releases the pressing of the battery module when the module is put into the box or the module is offline. However, the mechanical structure of prior art 1 is complex and the manufacturing cost is high.

[0008] Through the above search, it is found that the above technical solutions do not affect the novelty of the utility model. Utility Model Content

[0009] The utility model is to avoid the deficiencies of the above-mentioned prior art and provides a stacking preassembly device suitable for battery modules of different specifications.

[0010] The utility model adopts the following technical solutions to solve the technical problems: a stacking preassembly device suitable for battery modules of different specifications, which is used to neatly stack the battery cells on a tray located below the stacking preassembly device, and a battery cell module stacking gripper for battery cell loading is arranged adjacent to the side of the stacking preassembly device, and the tray is placed on a conveyor line and is provided with a lifting mechanism, a lifting frame, a linear drive mechanism, a reference structure and a stacking side clamping claw structure;

[0011] The lifting frame is installed at the output end of the lifting mechanism and can be raised or lowered under the drive of the lifting mechanism;

[0012] The reference structure and the stacking side clamping structure are sequentially arranged along the conveying direction of the conveying line, and the linear drive mechanism and the reference structure are mounted on the lifting frame; the output end of the linear drive mechanism outputs a linear motion along the conveying direction of the conveying line, and the stacking side clamping structure is mounted and connected to the output end of the linear drive mechanism;

[0013] The stacking side clamp structure is used to clamp the battery cells and stack them on the tray in sequence along the conveying direction starting from the reference structure under the driving feeding of the linear drive mechanism to form a battery module.

[0014] Further, the stacking side clamping jaw structure includes a connecting bracket, a stacking lifting cylinder, a fine-tuning cylinder, a stacking bracket, a stacking clamping cylinder, a stacking clamping jaw and a mounting plate;

[0015] The connecting bracket is connected and fixed to the lifting frame, the stacking lifting cylinder is installed and fixed to the connecting bracket, and its output end is connected and fixed to the mounting plate, and the output drives the mounting plate to move vertically upward or downward;

[0016] The fine-tuning cylinder is mounted and fixed to the mounting plate, and its output end is mounted and fixed to the stacking bracket, and the output drives the stacking bracket to move upward or downward in the vertical direction;

[0017] A pair of stacking jaws are relatively arranged on both sides of the tray, and are respectively connected and fixed to the two output ends of the stacking clamping cylinder installed and fixed on the stacking bracket; the output of the stacking clamping cylinder drives the pair of stacking jaws to move away from each other or move towards each other in a horizontal direction perpendicular to the conveying direction, and the battery cell is clamped between the pair of stacking jaws.

[0018] Furthermore, the stacking side clamping jaw structure also includes a pressing cylinder and a pressing rod;

[0019] The pressing cylinder is mounted and fixed on the stacking bracket, and an output end thereof is connected and fixed to the pressing rod pressed to the top of the battery cell, and the output drives the pressing rod to move vertically upward or downward.

[0020] Furthermore, one of the connecting bracket and the mounting plate is provided with a stacking side slider, and the other is provided with a stacking side slide rail accordingly, and the two are installed by slidingly matching the stacking side slider and the stacking side slide rail to form a sliding pair along the vertical direction.

[0021] Furthermore, the stacking side clamping jaw structure is also provided with a pressing cylinder and a pressing rod;

[0022] The clamping cylinder is mounted and fixed on the stacking bracket, and its output end is connected and fixed to the compression rod, and the output is a vertical linear motion; the compression rod is located above the battery cell and can be lowered and compressed by the clamping cylinder.

[0023] Furthermore, the number of the linear drive mechanisms is two, one of which serves as a reference-side linear drive mechanism and the other serves as a stacking-side linear drive mechanism;

[0024] The reference structure is mounted on the lifting frame through the reference-side linear drive mechanism, or the reference structure is slidably mounted on the lifting frame to form a sliding pair along the conveying direction with the lifting frame, and the reference structure is connected and fixed to the output end of the reference-side linear drive mechanism;

[0025] The stacking side clamping structure is installed on the lifting frame through the stacking side linear driving mechanism, or the stacking side clamping structure is slidably installed on the lifting frame to form a sliding pair along the conveying direction between the stacking side clamping structure and the lifting frame, and the stacking side clamping structure is connected and fixed to the output end of the stacking side linear driving mechanism.

[0026] Furthermore, the linear drive mechanism includes a servo motor, a lead screw, a nut block and a slide rail;

[0027] The servo motor is fixedly mounted on the lifting frame, and its output end is connected to the screw shaft; the screw is rotatably mounted on the lifting frame through a screw seat, and its axis is arranged along the conveying direction; the nut block serves as the output end of the linear drive mechanism, and is connected and fixed to the reference structure or the stacking side clamping structure; the slide rail is fixedly mounted on the lifting frame, and the reference structure and the stacking side clamping structure are slidably mounted on the slide rail, forming a sliding pair along the conveying direction between the slide rail and the lifting frame.

[0028] Further, the reference structure includes a reference bracket, a reference clamping cylinder and a reference clamping claw;

[0029] The reference bracket is connected and fixed to the output end of the reference-side linear drive mechanism, and is slidably installed on the lifting frame, forming a sliding pair along the conveying direction with the lifting frame; a pair of reference clamps are relatively arranged on both sides of the tray, and are respectively connected and fixed to the two output ends of the reference clamping cylinder installed and fixed on the reference bracket; the output of the reference clamping cylinder drives the pair of reference clamps to move away from each other or towards each other in a linear motion in a horizontal direction perpendicular to the conveying direction, and the first battery cell on the tray located at the front end of the conveying path is clamped and fixed between the pair of reference clamps.

[0030] Furthermore, the lifting mechanism is a pair of lifting cylinders whose output ends are fixed to the top of the lifting frame. Either one of the pair of lifting cylinders serves as a balancing lifting cylinder, outputting an upward pulling force to balance the dead weight of the lifting frame, the linear drive mechanism, the reference structure, the stacking side clamping structure and the drag chain; the other serves as a driving lifting cylinder, used to drive the lifting frame to lift and lower.

[0031] Furthermore, a drag chain is provided for accommodating and protecting the lines of the stacked pre-assembled equipment.

[0032] The utility model provides a stacking preassembly device suitable for battery modules of different specifications, which has the following beneficial effects:

[0033] 1. The utility model only needs to be equipped with one battery module stacking gripper for loading materials to directly realize the stacking pre-assembly of battery modules and cells on the tray. Compared with the existing production line, which needs to be equipped with two battery module stacking grippers for loading and unloading respectively, the equipment cost and equipment space occupied by the battery module stacking pre-assembly are effectively reduced, which is conducive to improving production efficiency and controlling production costs;

[0034] 2. The positions of the reference structure and the stacking side clamping structure of the utility model can be adjusted under the drive of the linear drive mechanism, and the spacing between a pair of reference clamping jaws and a pair of stacking clamping jaws can be adjusted under the drive of the reference clamping cylinder and the stacking clamping cylinder respectively, which can adapt to the stacking pre-assembly needs of battery modules of different specifications and has good compatibility.

[0035] 3. The utility model has a simple structure and is easy to use, meeting the needs of actual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of the utility model;

[0037] Figure 2 It is a structural schematic diagram of the reference bracket of the utility model;

[0038] Figure 3 It is a structural schematic diagram of the stacking side clamping claw structure of the utility model.

[0039] In the figure:

[0040] 1. Lifting mechanism; 2. Lifting frame; 3. Linear drive mechanism, 31. Servo motor, 32. Screw rod, 34. Slide rail; 4. Reference structure, 41. Reference bracket, 42. Reference clamping cylinder, 43. Reference clamping claw; 5. Stacking side clamping claw structure, 51. Connecting bracket, 52. Stacking lifting cylinder, 53. Fine-tuning cylinder, 54. Stacking bracket, 55. Stacking clamping cylinder, 56. Stacking clamping claw, 57. Mounting plate, 58. Clamping cylinder, 59. Pressure rod; 6. Pallet; 7. Battery cell; 8. Drag chain. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] like Figure 1~Figure 3 As shown, the structural relationship is as follows: the battery cells 7 are neatly stacked on the tray 6 located below the stacking preassembly device, and the battery cell module stacking gripper for loading the battery cells is adjacent to the side of the stacking preassembly device. When actually set, the battery cell module stacking gripper can use the battery cell module stacking gripper disclosed in Chinese patent CN202321672571.0;

[0043] The pallet 6 is placed on the conveyor line and is provided with a lifting mechanism 1, a lifting frame 2, a linear drive mechanism 3, a reference structure 4 and a stacking side clamping claw structure 5;

[0044] The lifting frame 2 is installed at the output end of the lifting mechanism 1 and can be raised or lowered under the drive of the lifting mechanism 1;

[0045] The reference structure 4 and the stacking side clamping structure 5 are sequentially arranged along the conveying direction of the conveying line, and the linear drive mechanism 3 and the reference structure 4 are installed on the lifting frame 2; the output end of the linear drive mechanism 3 outputs a linear motion along the conveying direction of the conveying line, and the stacking side clamping structure 5 is installed and connected with the output end of the linear drive mechanism 3;

[0046] The stacking side clamping jaw structure 5 is used to clamp the battery cells 7 and stack them on the tray 6 in sequence along the conveying direction starting from the reference structure 4 under the driving feeding of the linear drive mechanism 3 to form a battery module.

[0047] Preferably, the stacking side clamping jaw structure 5 includes a connecting bracket 51, a stacking lifting cylinder 52, a fine-tuning cylinder 53, a stacking bracket 54, a stacking clamping cylinder 55, a stacking clamping jaw 56 and a mounting plate 57;

[0048] The connecting bracket 51 is connected and fixed to the lifting frame 2, and the stacking lifting cylinder 52 is installed and fixed to the connecting bracket 51, and its output end is connected and fixed to the mounting plate 57, and the output drives the mounting plate 57 to move vertically upward or downward;

[0049] The fine-tuning cylinder 53 is mounted and fixed on the mounting plate 57, and its output end is mounted and fixed on the stacking bracket 54, and the output drives the stacking bracket 54 to move upward or downward in the vertical direction;

[0050] A pair of stacking jaws 56 are arranged on both sides of the tray 6, and are respectively connected and fixed to the two output ends of the stacking clamping cylinder 55 installed and fixed on the stacking bracket 54; the output of the stacking clamping cylinder 55 drives the pair of stacking jaws 56 to move away from each other or move towards each other in a horizontal direction perpendicular to the conveying direction. The battery cell 7 is clamped between the pair of stacking jaws 56.

[0051] Preferably, the stacking side clamping jaw structure 5 further includes a pressing cylinder 58 and a pressing rod 59;

[0052] The pressing cylinder 58 is mounted and fixed on the stacking bracket 54, and its output end is connected and fixed to a pressing rod 59 pressed to the top of the battery cell 7, and the output drives the pressing rod 59 to move vertically upward or downward.

[0053] Preferably, one of the connecting bracket 51 and the mounting plate 57 is provided with a stacking side slider, and the other is provided with a stacking side slide rail, and the two are installed by slidingly matching the stacking side slider and the stacking side slide rail to form a sliding pair along the vertical direction.

[0054] The sliding pair plays a guiding and stabilizing role, so that the rapid rising or falling movement of the mounting plate 57 driven by the stacking lifting cylinder 52 is smoother.

[0055] Preferably, the stacking side clamping jaw structure 5 is further provided with a pressing cylinder 58 and a pressing rod 59;

[0056] The clamping cylinder 58 is installed and fixed on the stacking bracket 54 , and its output end is connected and fixed to the pressure rod 59 , and the output is a vertical linear motion; the pressure rod 59 is located above the battery cell 7 and can be lowered and pressed by the clamping cylinder 58 to compress the battery cell 7 .

[0057] Preferably, the number of the linear drive mechanisms 3 is two, one of which serves as a reference-side linear drive mechanism and the other serves as a stacking-side linear drive mechanism;

[0058] The reference structure 4 is mounted on the lifting frame 2 through a reference-side linear drive mechanism, or the reference structure 4 is slidably mounted on the lifting frame 2 to form a sliding pair along the conveying direction with the lifting frame 2, and the reference structure 4 is connected and fixed to the output end of the reference-side linear drive mechanism;

[0059] The stacking side clamping structure 5 is installed on the lifting frame 2 through the stacking side linear driving mechanism, or the stacking side clamping structure 5 is slidably installed on the lifting frame 2 to form a sliding pair along the conveying direction between the stacking side clamping structure 5 and the lifting frame 2, and the stacking side clamping structure 5 is connected and fixed to the output end of the stacking side linear driving mechanism.

[0060] Preferably, the linear drive mechanism 3 includes a servo motor 31, a screw rod 32, a nut block and a slide rail 34;

[0061] The servo motor 31 is installed and fixed on the lifting frame 2, and its output end is axially connected with the screw rod 32; the screw rod 32 is rotatably installed on the lifting frame 2 through the screw rod seat, and its axis is set along the conveying direction; the nut block serves as the output end of the linear drive mechanism 3, and is connected and fixed to the reference structure 4 or the stacking side clamping structure 5; the slide rail 34 is installed and fixed on the lifting frame 2, and the reference structure 4 and the stacking side clamping structure 5 are slidably installed on the slide rail 34, forming a sliding pair along the conveying direction between the lifting frame 2.

[0062] Preferably, the reference structure 4 includes a reference bracket 41, a reference clamping cylinder 42 and a reference clamping claw 43;

[0063] The reference bracket 41 is connected and fixed to the output end of the reference-side linear drive mechanism, and is slidably installed on the lifting frame 2, forming a sliding pair along the conveying direction between the lifting frame 2; a pair of reference clamps 43 are relatively arranged on both sides of the tray 6, and are respectively connected and fixed to the two output ends of the reference clamping cylinder 42 installed and fixed on the reference bracket 41; the output of the reference clamping cylinder 42 drives the pair of reference clamps 43 to move away from each other or towards each other in a linear motion in a horizontal direction perpendicular to the conveying direction, and the first battery cell 7 on the tray 6 located at the front end of the conveying path is clamped and fixed between the pair of reference clamps 43.

[0064] Preferably, the lifting mechanism 1 is a pair of lifting cylinders whose output ends are fixedly installed on the top of the lifting frame 2. Either one of the pair of lifting cylinders serves as a balancing lifting cylinder, outputting an upward pulling force to balance the dead weight of the lifting frame 2, the linear drive mechanism 3, the reference structure 4, the stacking side clamp structure 5 and the drag chain 8, and the other serves as a driving lifting cylinder, used to drive the lifting frame 2 to rise and fall.

[0065] Preferably, a drag chain 8 is also provided for accommodating and protecting the lines of the stacked pre-assembled devices.

[0066] During specific use, when the production line starts production or the specifications of the battery modules produced are changed, the reference structure 4 should be calibrated and adjusted first: the servo motor 31 of the linear drive mechanism on the reference side works to drive the screw 32 of the linear drive mechanism on the reference side to rotate forward or reversely, so as to drive the nut block of the linear drive mechanism on the reference side and the reference structure 4 installed on the nut block to slide forward or backward along the conveying direction to a suitable position under the guidance of the slide rail 34, and then the servo motor 31 stops to lock the position of the reference structure 4.

[0067] The above stacking pre-assembly equipment includes the following processes when stacking cells:

[0068] In the first step, the conveyor line conveys the pallet 6 to the position below the stacking pre-assembly device, and then the lifting mechanism 1 drives the lifting frame 2 and the linear drive mechanism 3, the reference structure 4 and the stacking side clamping structure 5 installed thereon to descend to the position;

[0069] At this time, the reference structure 4 and the stacking side clamping structure 5 are both located at the initial position of the battery cell 7 stacking;

[0070] In the second step, the stacking clamping cylinder 55 drives the pair of stacking clamping jaws 56 to move away from each other, and the stacking lifting cylinder 52 drives the mounting plate 57 to rise under the guidance of the stacking side slide rail and the stacking side slider, so that the pair of stacking clamping jaws 56 are docked with the battery module stacking gripper for battery cell loading, and then the stacking clamping cylinder 55 drives the pair of stacking clamping jaws 56 to move toward each other, until the battery cell 7 on the battery module stacking gripper is clamped and taken over;

[0071] In the third step, the stacking lifting cylinder 52 drives the stacking side slide rail and the stacking side slider to descend and reset under the guidance of the stacking side slide rail and the stacking side slider, the reference clamping cylinder 43 drives the pair of reference clamping jaws 43 to move away from each other, and the fine-tuning cylinder 53 drives the stacking bracket 54 to descend, so that the pair of stacking clamping jaws 56 dock with the pair of reference clamping jaws 43;

[0072] Then, the reference clamping cylinder 43 drives a pair of reference clamping claws 43 to move toward each other and clamp the battery cell 7, and the stacking clamping cylinder 55 drives a pair of stacking clamping claws 56 to move away from each other and release the battery cell 7, and stacks the battery cell 7 as the first battery cell 7 of the battery module stacking on the tray 6; the fine-tuning cylinder 53 then drives the stacking bracket 54 to rise and reset;

[0073] In the fourth step, the servo motor 31 of the stacking side linear drive mechanism drives the screw 32 to rotate in the forward direction, driving the nut block of the stacking side linear drive mechanism and the stacking side clamping structure installed on the nut block to step backward along the conveying direction under the guidance of the slide rail 34, and the stepping distance is the preset stacking thickness of the battery cell 7;

[0074] In the fifth step, the stacking side clamping structure 5 takes over the next battery cell 7 according to the method of the second step. Then, the stacking lifting cylinder 52 drives the stacking side slide rail and the stacking side slider to descend and reset under the guidance of the stacking side slide rail and the stacking side slider. The fine-tuning cylinder 53 drives the stacking bracket 54 to continue to descend.

[0075] Until the battery cell 7 clamped by the pair of stacking jaws 56 approaches the previous battery cell 7 on the tray 6 and is stacked on the tray 6;

[0076] The pressing cylinder 58 then drives the pressing rod 59 to descend, and the top of the battery cell 7 clamped by the pair of stacking clamps 56 presses the battery cell 7, and the stacking clamping cylinder 55 drives the pair of stacking clamps 56 to move away from each other, releasing the battery cell 7, and then the fine-tuning cylinder 53 and the pressing cylinder 58 respectively drive the stacking bracket 54 and the pressing rod 59 to rise and reset, completing the stacking of the battery cell 7;

[0077] Step 6: Repeat the process of steps 4 to 5 until the battery modules are stacked. The conveyor line sends the tray 6 and the pre-assembled battery modules stacked thereon to the downstream process as a whole.

[0078] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stacking preassembly device suitable for battery modules of different specifications, used for neatly stacking each battery cell (7) on a tray (6) located below the stacking preassembly device, a battery cell module stacking gripper for loading the battery cells is arranged adjacent to the side of the stacking preassembly device, the tray (6) is placed on a conveyor line, and is characterized in that: A lifting mechanism (1), a lifting frame (2), a linear drive mechanism (3), a reference structure (4) and a stacking side clamping claw structure (5) are provided; The lifting frame (2) is mounted on the output end of the lifting mechanism (1) and can be raised or lowered under the drive of the lifting mechanism (1); The reference structure (4) and the stacking side clamping structure (5) are arranged in sequence along the conveying direction of the conveying line, and the linear drive mechanism (3) and the reference structure (4) are mounted on the lifting frame (2); the output end of the linear drive mechanism (3) outputs a linear motion along the conveying direction of the conveying line, and the stacking side clamping structure (5) is mounted and connected to the output end of the linear drive mechanism (3); The stacking side clamping claw structure (5) is used to clamp each of the battery cells (7) and stack them in sequence on the tray (6) along the conveying direction starting from the reference structure (4) under the driving feed of the linear drive mechanism (3) to form a battery module.

2. The stacking preassembly device for battery modules of different specifications according to claim 1, characterized in that: The stacking side clamping claw structure (5) comprises a connecting bracket (51), a stacking lifting cylinder (52), a fine-tuning cylinder (53), a stacking bracket (54), a stacking clamping cylinder (55), a stacking clamping claw (56) and a mounting plate (57); The connecting bracket (51) is connected and fixed to the lifting frame (2); the stacking lifting cylinder (52) is installed and fixed to the connecting bracket (51); its output end is connected and fixed to the mounting plate (57); the output drives the mounting plate (57) to move vertically upward or downward; The fine-tuning cylinder (53) is mounted and fixed on the mounting plate (57), and its output end is mounted and fixed on the stacking bracket (54), and the output drives the stacking bracket (54) to move upward or downward in a vertical direction; A pair of stacking jaws (56) are arranged on opposite sides of the tray (6) and are respectively connected and fixed to two output ends of the stacking clamping cylinder (55) mounted and fixed on the stacking bracket (54); the output of the stacking clamping cylinder (55) drives the pair of stacking jaws (56) to move away from each other or towards each other in a linear motion in a horizontal direction perpendicular to the conveying direction, and the battery cell (7) is clamped between the pair of stacking jaws (56).

3. The stacking preassembly device suitable for battery modules of different specifications according to claim 2, characterized in that: The stacking side clamping claw structure (5) further comprises a pressing cylinder (58) and a pressing rod (59); The pressing cylinder (58) is mounted and fixed on the stacking bracket (54), and its output end is connected and fixed to the pressing rod (59) pressed to the top of the battery cell (7), and the output drives the pressing rod (59) to move vertically upward or downward.

4. A stacking preassembly device suitable for battery modules of different specifications according to claim 2 or 3, characterized in that: Either the connecting bracket (51) or the mounting plate (57) is provided with a stacking side slider, and the other is provided with a stacking side slide rail, and the two are installed by slidingly matching the stacking side slider and the stacking side slide rail to form a sliding pair along the vertical direction.

5. The stacking preassembly equipment suitable for battery modules of different specifications according to claim 2, characterized in that: The stacking side clamping claw structure (5) is also provided with a pressing cylinder (58) and a pressing rod (59); The pressing cylinder (58) is mounted and fixed on the stacking bracket (54), and its output end is connected and fixed to the pressing rod (59), and outputs a linear motion in the vertical direction; the pressing rod (59) is located above the battery cell (7), and can be lowered and pressed against the battery cell (7) under the drive of the pressing cylinder (58).

6. A stacking preassembly device suitable for battery modules of different specifications according to any one of claims 1 to 3, characterized in that: The number of the linear drive mechanisms (3) is two, one of which serves as a reference side linear drive mechanism and the other serves as a stacking side linear drive mechanism; The reference structure (4) is mounted on the lifting frame (2) via the reference-side linear drive mechanism, or the reference structure (4) is slidably mounted on the lifting frame (2) to form a sliding pair with the lifting frame (2) along the conveying direction, and the reference structure (4) is connected and fixed to the output end of the reference-side linear drive mechanism; The stacking side clamping jaw structure (5) is mounted on the lifting frame (2) via the stacking side linear drive mechanism, or the stacking side clamping jaw structure (5) is slidably mounted on the lifting frame (2) to form a sliding pair along the conveying direction between the stacking side clamping jaw structure (5) and the lifting frame (2), and the stacking side clamping jaw structure (5) is connected and fixed to the output end of the stacking side linear drive mechanism.

7. The stacking preassembly equipment suitable for battery modules of different specifications according to claim 4, characterized in that: The linear drive mechanism (3) comprises a servo motor (31), a lead screw (32), a nut block and a slide rail (34); The servo motor (31) is mounted and fixed on the lifting frame (2), and its output end is axially connected to the screw rod (32); the screw rod (32) is rotatably mounted on the lifting frame (2) through a screw rod seat, and its axis is arranged along the conveying direction; the nut block serves as the output end of the linear drive mechanism (3), and is connected and fixed to the reference structure (4) or the stacking side clamping structure (5); the slide rail (34) is mounted and fixed on the lifting frame (2), and the reference structure (4) and the stacking side clamping structure (5) are slidably mounted on the slide rail (34), forming a sliding pair along the conveying direction between the slide rail and the lifting frame (2).

8. The stacking preassembly equipment suitable for battery modules of different specifications according to claim 6, characterized in that: The reference structure (4) comprises a reference bracket (41), a reference clamping cylinder (42) and a reference clamping claw (43); The reference bracket (41) is connected and fixed to the output end of the reference-side linear drive mechanism, and is slidably mounted on the lifting frame (2), forming a sliding pair along the conveying direction between the lifting frame (2); a pair of reference clamping jaws (43) are arranged on both sides of the tray (6) opposite to each other, and are respectively connected and fixed to the two output ends of the reference clamping cylinder (42) mounted and fixed on the reference bracket (41); the output of the reference clamping cylinder (42) drives the pair of reference clamping jaws (43) to move away from each other or towards each other in a linear motion in a horizontal direction perpendicular to the conveying direction, and the first battery cell (7) on the tray (6) located at the front end of the conveying path is clamped and fixed between the pair of reference clamping jaws (43).

9. The stacking preassembly equipment suitable for battery modules of different specifications according to claim 1, characterized in that: The lifting mechanism (1) is a pair of lifting cylinders whose output ends are fixedly mounted on the top of the lifting frame (2). One of the pair of lifting cylinders serves as a balancing lifting cylinder that outputs an upward pulling force to balance the deadweight of the lifting frame (2), the linear drive mechanism (3), the reference structure (4), the stacking side clamping structure (5) and the drag chain (8), and the other serves as a driving lifting cylinder that drives the lifting frame (2) to move up and down.

10. The stacking preassembly equipment suitable for battery modules of different specifications according to claim 1, characterized in that: A drag chain (8) is also provided for accommodating and protecting the line of the stacked pre-assembled equipment.

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