Double-sided pressurizing device

Abstract

The utility model provides a double-sided pressurizing device. A pressurizing plate with a bidirectional pressurizing surface is arranged on a pressurizing beam; the pressurizing beam can be driven by the pressurizing linear module to move, the position of the pressurizing beam relative to the battery cell unit is adjusted, the battery cell unit is pushed and pressed from any one face of the battery cell unit, the high application capacity is achieved, and the stacking requirements in different states can be met. In addition, a clamping mechanism capable of moving in the Y-axis direction is arranged on the pressurizing beam, and the positions of the two sides of the battery cell units are fixed in the pressurizing process, so that the stacking direction of the battery cell units is accurate. The system is good in compatibility effect, high in circulation degree, convenient to debug and capable of effectively improving the pressurization efficiency.

Description

Technical Field

[0001] The utility model relates to battery module processing equipment, in particular to a double-sided pressurizing device. Background Art

[0002] The square shell battery module is assembled from multiple battery cells, and the multiple battery cells work together to make the square shell battery module have a larger capacity. Figure 1 The figure shows a schematic diagram of the structure of a cell unit that makes up a square shell battery. The cell unit is a horizontal strip structure composed of multiple cells assembled in parallel, and a water cooling plate is installed on one end face of the multiple cells. Then, the multiple cell units are arranged longitudinally and pressed together so that the water cooling plate covers the other end face of the cell, thereby forming a square shell battery module.

[0003] The stacking of square shell battery modules requires extremely high alignment accuracy of the battery cell units. The applicant provides a square shell battery stacking system in the invention patent with authorization announcement number CN117133991B, in which two sets of clamping components are respectively arranged on both sides of the stacking table to clamp two adjacent sets of water cooling tubes respectively. Driven by the clamping hand linear module, the two sets of water cooling tubes on the same side are brought close to each other and pre-inserted, and then the pressurizing unit applies a pressing force to the battery cell unit to complete the stacking, thereby reducing the pressurization difficulty of the pressurizing unit.

[0004] However, this solution, like the prior art, can only apply pressure in one direction, so there are certain requirements on the position of loading, which affects the flexibility of module stacking. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a double-sided pressurizing device, comprising a frame and a pressurizing mechanism, wherein the pressurizing mechanism comprises pressurizing linear modules arranged in parallel on the frame, and the moving output ends of the two sets of pressurizing linear modules are commonly connected to a set of pressurizing beams, and a lifting linear module is fixedly arranged on the pressurizing beam, and a pressurizing component is arranged at the moving output end of the lifting linear module; the characteristics are:

[0006] The length direction of the pressure beam is set as the X axis, the extension direction of the pressure linear module is set as the Y axis, and the pressure component is provided with pressure plates on both sides of the Y axis direction for outputting a pushing force to the battery cell unit;

[0007] A clamping mechanism is also provided for adjusting the position of the battery cell unit during the pressurization process, and the clamping mechanism includes four groups of gripping assemblies, which are respectively located on both sides of the battery cell unit and distributed on both sides of the moving beam, and each group of gripping assemblies is respectively arranged at the moving end of a group of gripping linear modules arranged along the Y-axis, and the gripping linear modules are connected to the moving beam.

[0008] Furthermore, the pressurized linear module adopts a gear rack transmission structure, including a guide rack arranged along the Y-axis on the frame and a pressure beam support plate, a servo motor is fixedly installed on the pressure beam support plate and a gear meshing with the guide rack is arranged at the rotation output end of the servo motor, and both ends of the pressure beam are fixedly connected to the pressure beam support plate.

[0009] Furthermore, the pressurizing assembly includes a pressure plate disposed between two groups of pressurizing plates, the pressure plate being fixedly disposed at the bottom of the pressurizing assembly and connected to the pressurizing plates via a linear bearing;

[0010] A pressure sensor is provided between the pressure plate and the pressure receiving plate.

[0011] Furthermore, contact sensors for sensing the position of the battery cell units are arranged in the direction of the pressure plate toward the pressure surface, and the contact sensors are in multiple groups and are distributed in the length direction of the pressure plate.

[0012] Furthermore, a distance sensor for monitoring the distance between the pressurizing assembly and the battery cell unit is also arranged at the bottom of the pressurizing assembly.

[0013] Furthermore, the gripper assembly includes a centering gripper having a positioning surface C that abuts against the side surface of the battery cell unit; the centering gripper is connected to a group of push-pull cylinders arranged along the Y axis and is pushed by the push-pull cylinders.

[0014] Furthermore, a compatible linear module arranged along the X-axis is also arranged on the pressure beam, and two groups of clamping claw linear modules located on the same side of the battery cell unit are connected to the moving output end of the same group of compatible linear modules.

[0015] Furthermore, a gripper lifting module for driving the gripper assembly to move vertically is also provided on the gripper linear module, and the push-pull cylinder is provided at the output end of the gripper lifting module.

[0016] Furthermore, the gripper assembly also includes a positioning gripper group for locating the position of the water cooling pipe, and the positioning gripper group is composed of one or more positioning grippers, each positioning gripper has a positioning groove that matches the shape of the water cooling pipe and in the same gripper assembly, the centers of the positioning grooves of the positioning grippers are located on the same axis.

[0017] Furthermore, the positioning clamping hand group includes at least a first clamping hand for positioning the water-cooling pipe body or a second clamping hand for positioning the water-cooling pipe opening.

[0018] The utility model provides a double-sided pressurizing device, wherein a pressurizing plate with a bidirectional pressurizing surface is arranged on a pressurizing beam; the pressurizing beam can be driven to move by a pressurizing linear module, and the position of the pressurizing beam relative to the battery cell unit can be adjusted, and the battery cell unit can be pushed from any side of the battery cell unit. The utility model has strong applicability and can meet the stacking requirements under different states.

[0019] The utility model also provides a clamping mechanism movable along the Y-axis direction on the pressurizing beam to fix the positions of both sides of the battery cell unit during the pressurizing process, thereby accurately stacking the battery cell unit. The utility model has good compatibility, high circulation degree, convenient debugging, and can effectively improve the pressurizing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a double-sided pressurizing device of the utility model;

[0021] Figure 2 is a schematic diagram of the structure of the pressurized component;

[0022] Figure 3 It is a structural schematic diagram of the clamping mechanism;

[0023] Figure 4 It is a structural schematic diagram of the gripper assembly.

[0024] Rack 1;

[0025] Pressurizing mechanism 2; pressurizing beam 21, pressurizing linear module 22, pressurizing beam support plate 221, servo motor 222, lifting linear module 23, pressurizing assembly 24, pressurizing plate 241, pad 242, pressure plate 243, linear bearing 244, pressure sensor 245, buffer spring 246, vertical guide rail 247, contact sensor 248, distance sensor 249;

[0026] Clamping mechanism 3; clamping hand assembly 31, centering clamping hand 311, positioning clamping hand 312, first clamping hand 312-1, second clamping hand 312-2, micro switch 313, clamping cylinder 314, positioning groove 315, push-pull cylinder 32, clamping claw linear module 33, compatible linear module 34, clamping hand lifting module 35. DETAILED DESCRIPTION

[0027] like Figure 1 A double-sided pressurizing device is shown, comprising a frame 1 and a pressurizing mechanism 2, wherein the pressurizing mechanism 2 comprises pressurizing linear modules 22 arranged in parallel on the frame 1, and the moving output ends of the two groups of pressurizing linear modules 22 are commonly connected to a group of pressurizing beams 21, and a lifting linear module 23 is fixedly arranged on the pressurizing beam 21, and a pressurizing component 24 is arranged at the moving output end of the lifting linear module 23.

[0028] The length direction of the pressure beam 21 is set as the X-axis, and the extension direction of the pressure linear module 22 is set as the Y-axis. The pressure component 24 is provided with a pressure plate 241 for outputting a pushing force to the battery cell unit on both sides in the Y-axis direction; a plurality of pads 242 are arranged on the end face of the pressure plate 241, and the pads 242 are in contact with the battery cell unit to form a pressure surface for the battery cell unit.

[0029] The pressurizing linear module 22 can drive the pressurizing beam 21 and the battery cell unit to move, and can also adjust the position of the pressurizing beam 21 relative to the battery cell unit, and push the battery cell unit from any side of the battery cell unit.

[0030] In this embodiment, the pressurized linear module 22 adopts a gear rack transmission structure, including a guide rack arranged along the Y-axis on the frame 1 and a pressurized beam support plate 221, a servo motor 222 is fixedly arranged on the pressurized beam support plate 221 and a gear meshing with the guide rack is arranged at the rotation output end of the servo motor 222, and both ends of the pressurized beam 21 are fixedly connected to the pressurized beam support plate 221.

[0031] The lifting linear module 23 in this embodiment adopts a lifting slide structure, and the pressurizing assembly 24 is driven by the lifting linear module 23 and the pressurizing linear module 22 respectively, pushing the battery cell unit to move toward the reference surface of the dummy beam to complete the stacking.

[0032] like Figure 1 and Figure 2 As shown, the pressure assembly 24 includes a pressure plate 243 arranged between two groups of pressure plates 241. The pressure plate 243 is fixedly arranged at the bottom of the pressure assembly 24 and connected to the pressure plate 241 through a linear bearing 244. While ensuring the stable connection between the pressure plate 243 and the pressure plate 241, a small relative displacement can be generated.

[0033] A pressure sensor 245 is provided between the pressure plate 241 and the pressure-bearing plate 243, which can monitor the pressure transmitted from the pressure plate 241. When the pressure exceeds the preset safety value, the movement of the pressurized linear module 22 is stopped and an alarm is sounded to prevent excessive pressure from causing damage to the pressurized component 24 or the battery module.

[0034] Furthermore, a buffer spring 246 is connected between the pressure plate 241 and the pressure-bearing plate 243. The buffer spring 246 can share the pressure on the pressure sensor 245 during the pressurization process and restore the pressure plate 241 to its initial position after the pressurization is completed.

[0035] The pressurizing assembly 24 also includes a lifting support plate located above the pressurizing plate 241 , on which a plurality of vertical guide rails 247 are arranged. A guide slider matching the vertical guide rails 247 is fixedly arranged on the pressurizing beam 21 to stabilize the vertical movement of the pressurizing assembly 24 .

[0036] Furthermore, a locking hole is provided on the end face of the lifting support plate opposite to the pressure beam 21, and a locking pin is provided at the position corresponding to the locking hole of the pressure beam 21. The locking pin can be inserted into the locking hole to lock the lifting stroke of the lifting linear module 23 and stop the vertical movement of the pressure component 24.

[0037] Contact sensors 248 for sensing the position of the battery cell units are arranged in the direction of the pressurizing plate 241 toward the pressurizing surface, and the contact sensors 248 are arranged in multiple groups and distributed in the length direction of the pressurizing plate 241. When each contact sensor 248 is in contact with the battery cell unit, it can be determined that the battery cell unit is parallel to the pressurizing plate 241 in the length direction, thereby achieving synchronous pressurization of the pressurizing surface.

[0038] Furthermore, a distance sensor 249 is provided at the bottom of the pressurizing assembly 24 facing the battery cell unit so as to monitor the distance between the pressurizing assembly 24 and the battery cell unit in real time.

[0039] like Figures 2 to 4 As shown, a clamping mechanism 3 is also provided for adjusting the position of the battery cell unit during the pressurization process, and the clamping mechanism 3 includes four groups of gripper assemblies 31, which are respectively located on both sides of the battery cell unit and distributed on both sides of the moving beam, and each group of gripper assemblies 31 is respectively arranged at the moving end of a group of clamping claw linear modules 33 arranged along the Y axis, and the clamping claw linear modules 33 are connected to the moving beam. The two groups of gripper assemblies 31 on the same side of the moving beam simultaneously position a group of battery cell units from the side direction, and the clamping claw linear modules 33 can drive the gripper assemblies 31 to move along the Y axis to select a suitable clamping position.

[0040] The gripper assembly 31 includes a centering gripper 311, which has a positioning surface C that abuts against the side of the battery cell unit; the centering gripper 311 is connected to a group of push-pull cylinders 32 arranged along the Y axis and is pushed by the push-pull cylinders 32 until the positioning surface C abuts against the side of the battery cell module.

[0041] A compatible linear module 34 arranged along the X-axis is also provided on the pressure beam 21. Two groups of clamping linear modules 33 located on the same side of the battery cell unit are connected to the moving output end of the same group of compatible linear modules 34. The compatible linear module 34 is used to servo-adjust the position according to different product specifications.

[0042] In this embodiment, a clamp lifting module 35 is also provided on the clamp linear module 33 to drive the centering clamp 311 to move vertically. The push-pull cylinder 32 is arranged at the output end of the clamp lifting module 35, so that the centering clamp 311 can be vertically displaced relative to the pressure beam 21, and accurately pressed against the side of the battery unit according to different battery specifications.

[0043] As described above, the pressure plate 241 pushes the battery cell unit to move along the Y-axis, and during the pushing process, the length end face of the battery cell unit is made parallel to the pressure surface; the centering clamp 311 positions the battery cell unit from both sides to ensure that each group of battery cell units remains consistent in the length direction. The pressure plate 241 and the centering clamp 311 jointly limit the position of the battery cell unit.

[0044] The gripper assembly 31 also includes a positioning gripper group for locating the position of the water cooling pipe, and the positioning gripper group is composed of one or more positioning grippers. Each positioning gripper 312 has a positioning groove 315 that matches the shape of the water cooling pipe, and the centers of the positioning grooves 315 of the positioning grippers 312 in the same gripper assembly 31 are located on the same axis to keep the water cooling pipe horizontal.

[0045] The positioning gripper group and the centering gripper 311 are jointly arranged on the same clamping claw linear module 33, and are driven by the push-pull cylinder 32 to move toward the side of the battery cell unit, and when the centering gripper 311 is centered, the battery cell units to be stacked are positioned and the position of the water cooling tube is limited.

[0046] like Figure 4 As shown, in this embodiment, the positioning gripper 312 can be divided into a first gripper 312-1 and a second gripper 312-2 according to different positioning functions. The first gripper 312-1 is used to limit the position of the water-cooling tube body to prevent the tube body from tilting too much. A micro switch 313 is arranged on the side end face of the first gripper 312-1, and the micro switch 313 can contact with the protruding part of the water-cooling plate when the gripper assembly 31 moves along the Y-axis, so as to accurately locate the position of the first gripper 312-1. The number of first grippers 312-1 in each group of gripper assemblies 31 can be set according to demand. For example, in CN117133991B, for a combination formed by pre-stacked arrays of battery cell units, a first gripper 312-1 is arranged for each group of battery cell units.

[0047] The two clamping jaws of the second clamping hand 312-2 are driven by a group of clamping cylinders 314 to move relative to each other, and can clamp the pipe mouth position of the water-cooling pipe, further ensuring the alignment accuracy of the pipe mouth of the water-cooling pipe during insertion.

[0048] In each group of gripper assemblies 31 , the number and positions of the positioning grippers 312 are not strictly limited and can be adjusted according to the specifications of different products.

[0049] In addition, in each group of gripper assemblies 31, the positioning grippers 312 can be connected to the same push-pull cylinder 32 for synchronous movement, or each can be connected to a push-pull cylinder 32 for step-by-step movement.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A double-sided pressurizing device, comprising a frame (1) and a pressurizing mechanism (2), wherein the pressurizing mechanism (2) comprises pressurizing linear modules (22) arranged in parallel on the frame (1), the movable output ends of the two sets of pressurizing linear modules (22) are commonly connected to a set of pressurizing beams (21), a lifting linear module (23) is fixedly arranged on the pressurizing beam (21), and a pressurizing component (24) is arranged at the movable output end of the lifting linear module (23); the characteristics are: The length direction of the pressurizing beam (21) is set as the X-axis, the extension direction of the pressurizing linear module (22) is set as the Y-axis, and the pressurizing component (24) is provided with a pressurizing plate (241) for outputting a pushing force on the battery cell unit on two side surfaces in the Y-axis direction; A clamping mechanism (3) is also provided for adjusting the position of the battery cell unit during the pressurization process. The clamping mechanism (3) comprises four groups of gripper assemblies (31). The four groups of gripper assemblies (31) are respectively located on both sides of the battery cell unit and distributed on both sides of the moving beam. Each group of gripper assemblies (31) is respectively arranged at the moving end of a group of gripper linear modules (33) arranged along the Y axis. The gripper linear modules (33) are connected to the moving beam.

2. A double-sided pressurizing device as claimed in claim 1, characterized in that: The pressurized linear module (22) adopts a gear rack transmission structure, comprising a guide rack arranged along the Y axis on the frame (1) and a pressurized beam support plate (221), a servo motor (222) is fixedly arranged on the pressurized beam support plate (221), and a gear meshing with the guide rack is arranged at the rotation output end of the servo motor (222), and both ends of the pressurized beam (21) are fixedly connected to the pressurized beam support plate (221).

3. A double-sided pressurizing device as claimed in claim 1, characterized in that: The pressurizing assembly (24) comprises a pressure plate (243) arranged between two groups of pressurizing plates (241); the pressure plate (243) is fixedly arranged at the bottom of the pressurizing assembly (24) and connected to the pressurizing plate (241) via a linear bearing (244); A pressure sensor (245) is provided between the pressure plate (241) and the pressure receiving plate (243).

4. A double-sided pressurizing device as claimed in claim 1, characterized in that: A contact sensor (248) for sensing the position of a cell unit is arranged in the direction of the pressure plate (241) toward the pressure surface. The contact sensors (248) are in multiple groups and are distributed in the length direction of the pressure plate (241).

5. A double-sided pressurizing device as claimed in claim 1, characterized in that: A distance sensor (249) for monitoring the distance between the pressurizing component (24) and the battery cell unit is also arranged at the bottom of the pressurizing component (24).

6. A double-sided pressurizing device as claimed in claim 1, characterized in that: The gripper assembly (31) comprises a centering gripper (311), wherein the centering gripper (311) has a positioning surface C that abuts against the side surface of the battery cell unit; the centering gripper (311) is connected to a group of push-pull cylinders (32) arranged along the Y axis and is pushed by the push-pull cylinders (32).

7. A double-sided pressurizing device as claimed in claim 1, characterized in that: A compatible linear module (34) arranged along the X-axis is also arranged on the pressure beam (21), and two groups of clamping claw linear modules (33) located on the same side of the battery cell unit are connected to the moving output end of the same group of compatible linear modules (34).

8. A double-sided pressurizing device as claimed in claim 6, characterized in that: A gripper lifting module (35) for driving the gripper assembly (31) to move vertically is also provided on the gripper linear module (33), and the push-pull cylinder (32) is provided at the output end of the gripper lifting module (35).

9. A double-sided pressurizing device as claimed in claim 6, characterized in that: The gripper assembly (31) also includes a positioning gripper group for locating the position of the water cooling pipe, the positioning gripper group is composed of one or more positioning grippers (312), each positioning gripper (312) has a positioning groove (315) that matches the shape of the water cooling pipe, and in the same gripper assembly (31), the centers of the positioning grooves (315) of the positioning grippers (312) are located on the same axis.

10. A double-sided pressurizing device as claimed in claim 9, characterized in that: The positioning clamping hand group at least comprises a first clamping hand (312-1) for positioning the body of the water cooling pipe or a second clamping hand (312-2) for positioning the opening of the water cooling pipe.

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