Device for detecting size and flatness of battery cell module

Abstract

The utility model provides a cell module size and flatness detection device, which comprises a rack, a tray, a conveying module, a jacking assembly, a three-axis mechanical module assembly and a detection assembly, and is characterized in that the tray is used for bearing a cell module; the conveying module is arranged on the rack and used for conveying the tray to the position above the jacking assembly; the number of the jacking assemblies is at least two, and the jacking assemblies are fixedly arranged on the rack and used for jacking and positioning the trays above the jacking assemblies. The three-axis mechanical module assembly is arranged on the rack and used for bearing and driving the detection assembly to move in three directions perpendicular to one another; and the detection assembly is used for detecting the size and flatness of the battery cell module on the jacked and positioned tray. The tray with the positioning holes and the jacking assembly with the positioning pins are arranged, the tray is positioned through cooperation of the positioning holes and the positioning pins, the situation that the detection result is affected by shaking of the battery cell module is avoided, and the detection precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production and manufacturing, and in particular to a device for detecting the size and flatness of a battery core module. Background Art

[0002] The battery module is formed by stacking and assembling multiple battery cells in a certain arrangement. The function of the module is to manage and protect the battery cells to ensure their normal operation. The battery stacking process stacks the battery cells and end plate assemblies into modules. After the battery module is stacked, its external dimensions and surface flatness need to be measured so that the battery module can meet the product qualification standards.

[0003] When general inspection equipment performs two-dimensional and three-dimensional inspection on battery modules, it is necessary to inspect the flatness and size of the battery modules separately. In the inspection process, the error rate is high and the inspection accuracy is low. The Chinese patent with the authorization announcement number CN217738179U discloses a high-precision measurement equipment with the advantages of high inspection efficiency, high accuracy and low error rate, which solves the problem of low inspection efficiency and high error rate of workpieces.

[0004] For example, the measuring equipment in the above technical solution needs to use the Y-axis linear motor module to drive the product carrier to move during the inspection process, so as to adjust the focal length of the 2D inspection camera and the 3D inspection camera in the front and rear directions, and then inspect the flatness, size, etc. of the entire product. During the inspection process, the product moves dynamically, and there will be a certain degree of shaking during the movement process, which will cause measurement errors. Utility Model Content

[0005] In view of this, the utility model proposes a battery cell module size and flatness detection device, which positions the battery cell module during detection, avoids erroneous influence of shaking on the detection result, and improves the measurement accuracy.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a device for detecting the size and flatness of a battery module, which includes a frame, a tray, a conveying module, a lifting component, a three-axis mechanical module component and a detection component.

[0007] The tray is used to carry the battery module;

[0008] The conveying module is arranged on the frame and is used to convey the pallet to the top of the lifting assembly;

[0009] The lifting components include at least two components, which are fixed on the frame and used to lift and position the tray above the lifting components;

[0010] The three-axis mechanical module assembly is arranged on the frame and is used to carry and drive the detection assembly to move along three directions perpendicular to each other;

[0011] The detection component is used to detect the size and flatness of the battery cell module on the tray after jacking and positioning.

[0012] On the basis of the above technical solution, preferably, a positioning hole is provided at the bottom of the pallet, and a positioning pin is provided at the top of the jacking assembly, and the positioning pin is selectively inserted into the positioning hole to position the pallet.

[0013] On the basis of the above technical solution, preferably, a cushion block is further provided at the bottom of the tray, and a support block is further provided at the top of the jacking assembly, wherein:

[0014] The positioning holes and the cushion blocks are arranged in groups side by side along the moving direction of the conveying module;

[0015] The support block selectively clings to the cushion block to lift and support the tray.

[0016] On the basis of the above technical solution, preferably, the lifting assembly further includes a cylinder seat, a cylinder and a lifting plate, wherein:

[0017] The cylinder seat is fixedly connected to the frame;

[0018] The cylinder is arranged below the cylinder seat and is used to lift the lifting plate upwards;

[0019] The lifting plate is arranged at the output end of the cylinder and is used to support the positioning pin and the supporting block.

[0020] On the basis of the above technical solution, preferably, the lifting assembly further includes a proximity switch, and the proximity switch is arranged on the lifting plate to monitor whether the pallet is lifted into place.

[0021] On the basis of the above technical solution, preferably, the conveying module includes a slide rail and a drive assembly, wherein:

[0022] The slide rail is arranged on the frame to carry and transport the pallet;

[0023] The driving assembly drives the tray to move along the slide rail.

[0024] On the basis of the above technical solution, preferably, the three-axis mechanical module assembly includes a bracket, an X-axis linear module, a Y-axis linear module, a Z-axis linear module and a sliding block, wherein:

[0025] The bracket is arranged on the frame;

[0026] The X-axis linear module is arranged on the bracket, and is used to drive the Y-axis linear module to move along a conveying direction parallel to the conveying module;

[0027] The Y-axis linear module is used to drive the Z-axis linear module to move along a conveying direction perpendicular to the conveying module;

[0028] The Z-axis linear module is used to drive the sliding block to move along the vertical direction;

[0029] The sliding block is fixedly connected to the detection component.

[0030] On the basis of the above technical solution, preferably, the detection component includes a connecting part, a 2D camera and a 3D camera, wherein:

[0031] The connecting portion is fixedly connected to the sliding block;

[0032] The 2D camera is fixedly arranged at the lower end of the connecting portion and is used for detecting the size of the battery module;

[0033] The 3D camera is fixedly connected to the connecting portion and is disposed on one side of the 2D camera for performing flatness detection on the battery module.

[0034] On the basis of the above technical solution, preferably, it further comprises a calibration plate assembly, wherein the calibration plate assembly comprises a column and a calibration plate, wherein:

[0035] The column is fixedly connected to the frame;

[0036] The calibration plate is arranged at the top of the column and is arranged relative to the Y-axis linear module for calibrating the detection component.

[0037] On the basis of the above technical solution, preferably, the jacking assembly comprises two jacking assemblies, and the two jacking assemblies are arranged opposite to each other.

[0038] On the basis of the above technical solution, preferably, a support plate is provided on the frame for connecting and supporting the jacking assembly.

[0039] The battery cell module size and flatness detection device of the utility model has the following beneficial effects compared with the prior art:

[0040] (1) By providing a tray with positioning holes and a lifting assembly with a cylinder, a support plate, and a positioning pin, after the tray carrying the battery cell module enters the inspection station, the tray is lifted and supported by the support plate through the cylinder, and the positioning holes and the positioning pins are used to coordinately position the tray, thereby avoiding the shaking of the battery cell module during the inspection process, which may cause errors in the inspection results, thereby improving the inspection accuracy;

[0041] (2) A three-axis mechanical module assembly and a detection assembly including 2D and 3D detection cameras are set up, and the detection assembly is driven to move by the three-axis mechanical module assembly, and the positions of the 2D and 3D detection cameras relative to the battery cell module are adjusted to realize the detection of the size and flatness of the battery cell module. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 It is a three-dimensional diagram of the battery module size and flatness detection device of the utility model;

[0044] Figure 2 A bottom view of a tray of the battery module size and flatness detection device of the utility model;

[0045] Figure 3 A three-dimensional diagram of a lifting assembly of a device for detecting the size and flatness of a battery module of the utility model;

[0046] Figure 4 A three-dimensional diagram of a tray and a lifting assembly of the battery module size and flatness detection device of the utility model;

[0047] Figure 5 A three-dimensional diagram of a three-axis mechanical module assembly of a battery module size and flatness detection device of the utility model;

[0048] Figure 6 A three-dimensional diagram of a detection component of a device for detecting size and flatness of a battery module of the present invention;

[0049] Figure 7 It is a three-dimensional diagram of the calibration plate assembly of the battery cell module size and flatness detection device of the present invention.

[0050] Description of the drawings: 1. Rack; 2. Tray; 21. Positioning hole; 22. Pad; 3. Conveying module; 31. Slide rail; 32. Driving assembly; 4. Lifting assembly; 41. Positioning pin; 42. Support block; 43. Cylinder seat; 44. Cylinder; 45. Lifting plate; 5. Three-axis mechanical module assembly; 51. Bracket; 52. X-axis linear module; 53. Y-axis linear module; 54. Z-axis linear module; 55. Sliding block; 6. Detection assembly; 61. Connecting part; 62. 2D camera; 63. 3D camera; 7. Calibration plate assembly; 71. Column; 72. Calibration plate. DETAILED DESCRIPTION

[0051] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0052] like Figure 1-6 As shown, a device for detecting the size and flatness of a battery module of the utility model comprises a frame 1, a tray 2, a conveying module 3, a lifting component 4, a three-axis mechanical module component 5 and a detection component 6.

[0053] Specifically, the pallet 2 is placed on the conveying module 3 for carrying the battery cell module; the conveying module 3 is arranged on the frame 1, and is used to convey the pallet 2 to the top of the jacking assembly 4; the jacking assembly 4 includes at least two, which are fixed on the frame 1 and are used to lift and position the pallet 2 above the jacking assembly 4; the three-axis mechanical module assembly 5 is arranged on the frame 1, and is used to carry and drive the detection assembly 6 to move along three directions perpendicular to each other; the detection assembly 6 is used to perform size and flatness detection on the battery cell module on the pallet 2 after jacking and positioning.

[0054] As a preferred embodiment, the conveying module 3 includes a slide rail 31 and a driving assembly 32 , wherein the slide rail 31 is arranged on the frame 1 to carry and convey the tray 2 , and the driving assembly 32 drives the tray 2 to move along the slide rail 31 .

[0055] As shown in the above structure, there are various types of battery cell modules in actual production. The tray 2 has a clamping component with adjustable spacing, which can adapt to different types of battery cell modules. The slide rail 31 of the conveying module 3 is located in the middle of the frame 1 and is supported by the frame 1 above the frame 1. The jacking component 4 is fixedly connected to the frame 1 and is located below the slide rail 31 of the conveying module 3, so that the tray 2 placed on the conveying module 3 can be lifted upward and positioned.

[0056] Further preferably, the conveying module 3 can adopt a ball screw linear module, which includes a motor, a screw and a nut slide, and the tray 2 is arranged on the nut slide. The motor is used to drive the screw to rotate, and the rotation of the screw drives the nut slide to move linearly on the screw, thereby driving the tray 2 on the nut slide to move linearly along the screw.

[0057] Further, such as Figure 2-4 As shown, a positioning hole 21 is provided at the bottom of the tray 2, and a positioning pin 41 is provided at the top of the lifting assembly 4. The positioning pin 41 is selectively inserted into the positioning hole 21 to position the tray 2.

[0058] Further preferably, a pad block 22 is provided at the bottom of the tray 2, and a support block 42 is provided at the top of the lifting assembly 4. The positioning holes 21 and the pad blocks 22 are arranged in groups side by side along the moving direction of the conveying module 3, and the support block 42 selectively clings to the pad blocks 22 for lifting and supporting the tray 2.

[0059] Specifically, in order to avoid the shaking of the battery cell module during the detection process as much as possible, thereby improving the detection accuracy, it is necessary to position the tray 2 carrying the battery cell module. When the jacking assembly 4 is lifted upward, the positioning pin 41 is inserted into the positioning hole 21, thereby fixing the tray 2 to achieve positioning. In order to make the tray 2 balanced and stable, a cushion block 22 is arranged side by side on one side of the positioning hole 21, and a support block 42 matched with the cushion block 22 is arranged at a corresponding position on the top of the jacking assembly 4. When the jacking assembly 4 is lifted upward, the support block 42 is close to the cushion block 22, thereby lifting and supporting the tray 2. The simultaneous lifting of the positioning pin 41 and the support block 42 can keep the bottom height of the tray 2 consistent, avoid the tray 2 from tilting to one side, reduce the shaking of the battery cell module on the tray 2, and thus improve the detection accuracy.

[0060] It should be noted that a groove matching the shape of the cushion block 22 is provided at the bottom of the pallet 2, and the cushion block 22 is detachably arranged in the groove. In this way, after the jacking assembly 4 is jacked multiple times, if the friction between the support block 42 and the cushion block 22 causes the surface of the cushion block 22 to be uneven, it is only necessary to replace the cushion block 22 without replacing the entire pallet 2, thereby reducing production costs.

[0061] As a preferred embodiment, the positioning hole 21 and the cushion block 22 are circular or square, and the shapes of the positioning pin 41 and the support block 42 match those of the positioning hole 21 and the cushion block 22 .

[0062] As a preferred embodiment, the lifting assembly 4 also includes a cylinder seat 43, a cylinder 44 and a lifting plate 45, wherein the cylinder seat 43 is fixedly connected to the frame 1, and the cylinder 44 is arranged under the cylinder seat 43 for lifting the lifting plate 45 upward; the lifting plate 45 is arranged at the output end of the cylinder 44 for supporting the positioning pin 41 and the support block 42.

[0063] As a preferred embodiment, the lifting assembly 4 also includes a proximity switch 46, which is arranged on the lifting plate 45 and is used to monitor whether the pallet 2 is lifted into place. When the lifting assembly 4 lifts the pallet 2 into place, the sensor senses the position of the pallet 2 and issues a corresponding instruction. The three-axis mechanical module assembly 5 drives the detection assembly 6 to move and starts size and flatness detection.

[0064] As a preferred embodiment, Figure 5 As shown, the three-axis mechanical module assembly 5 includes a bracket 51 , an X-axis linear module 52 , a Y-axis linear module 53 , a Z-axis linear module 54 and a sliding block 55 .

[0065] As described above, the bracket 51 is arranged on the frame 1, and is used to support the X-axis linear module 52, the Y-axis linear module 53 and the Z-axis linear module, and reserve movement and detection space for the detection component 6 arranged on the three-axis mechanical module assembly 5; the X-axis linear module is arranged on the bracket 51, and is used to drive the Y-axis linear module 53 to move along the conveying direction parallel to the conveying module 3; the Y-axis linear module 53 is used to drive the Z-axis linear module 54 to move along the conveying direction perpendicular to the conveying module 3; the Z-axis linear module 54 is used to drive the sliding block 55 to move along the vertical direction; the sliding block 55 is fixedly connected to the detection component 6.

[0066] Further preferably, the X-axis linear module 52 adopts a ball screw transmission method, and the X-axis linear module 52 includes two slides parallel to the conveying direction of the conveying module 3. A screw is provided in the slide, and a nut seat is provided on the screw. The nut seat supports the Y-axis linear module 53 to span the two slides of the X-axis linear module 52. The screw is driven to rotate by a servo motor, and the rotation of the screw drives the nut to move linearly on the screw, thereby driving the Y-axis linear module 53 to move linearly along the slide of the Y-axis linear module 53; similarly, the Y-axis linear module 53 and the Z-axis linear module 54 each include a group of screws, nut seats and servo motors.

[0067] As a preferred embodiment, the detection component 6 includes a connecting part 61, a 2D camera 62 and a 3D camera 63, wherein the connecting part 61 is fixedly connected to the sliding block 55; the 2D camera 62 is fixedly arranged at the lower end of the connecting part 61, and is used for size detection of the battery cell module; the 3D camera 63 is fixedly connected to the connecting part 61 and is arranged on one side of the 2D camera 62, and is used for flatness detection of the battery cell module.

[0068] Specifically, after the tray 2 is positioned, the three-axis mechanical module assembly 5 drives the detection assembly 6 to move to the corresponding detection position on one side of the battery cell module, the 2D camera 62 takes pictures of the end plate holes on one side of the battery cell module for detection, drives the 3D camera 63 to move to the upper row of poles, and moves to scan the height difference of the upper row of poles, and then the three-axis mechanical module assembly 5 drives the detection assembly 6 to move to the corresponding detection position on the other side of the battery cell module, the 2D camera 62 and the 3D camera 63 take pictures and scan the end plate holes and the lower row of poles on the other side of the battery cell module to complete the size and flatness detection.

[0069] As a preferred embodiment, it also includes a calibration plate assembly 7, which includes a column 71 and a calibration plate 72, wherein the column 71 is fixedly connected to the frame 1; the calibration plate 72 is arranged at the top of the column 71 and is arranged relative to the Y-axis linear module 53, and is used to calibrate the calibration detection assembly 6.

[0070] It should be noted that, in order to improve the accuracy and precision of image processing, a calibration plate 72 is provided as a calibration object to correct image distortion of a 2D camera and a 3D camera and improve the accuracy of the detection result.

[0071] As a preferred embodiment, the jacking components 4 include two jacking components 4, and the two jacking components 4 are arranged opposite to each other.

[0072] Specifically, Figure 3-4 As shown, the two lifting assemblies 4 are relatively arranged below the two ends of the tray 2, so that the tray 2 can be stably supported. The two positioning holes 21 are diagonally arranged on both sides of the bottom of the tray 2, so that the two sides of the tray 2 can be balanced, making the battery module on the tray 2 more stable, thereby reducing the impact of shaking on the detection results.

[0073] As a preferred embodiment, a support plate is provided on the frame 1 for connecting and supporting the jacking assembly 4. The cylinder seat 43 of the jacking assembly 4 is arranged above the support plate and fixedly connected to the support plate by bolts and nuts.

[0074] Specific implementation steps:

[0075] 1. Start the driving assembly 32 to drive the tray 2 equipped with the battery module to move along the slide rail 31, and transport the tray 2 to the upper area of ​​the lifting assembly 4;

[0076] 2. The cylinder 44 drives the lifting plate 45 to lift upward, the positioning pin 41 on one side of the upper end of the lifting plate 45 is inserted into the positioning hole 21, and the support block 42 on the other side of the upper end of the lifting plate 45 is close to the cushion block 22, thereby realizing the lifting support and positioning of the pallet 2. During this process, the proximity switch 46 monitors whether the pallet 2 is lifted into place;

[0077] 3. The three-axis mechanical module assembly 5 drives the detection assembly 6 to move, and the 2D camera 62 takes pictures of the multiple end plate holes of the battery cell module for size detection, and the 3D camera 63 scans the upper and lower rows of poles of the battery cell module for flatness detection.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting the size and flatness of a battery cell module, comprising a frame (1), a tray (2), a conveying module (3), a lifting assembly (4), a three-axis mechanical module assembly (5) and a detection assembly (6), characterized in that: The tray (2) is used to carry the battery cell module; The conveying module (3) is arranged on the frame (1) and is used to convey the tray (2) to the top of the lifting assembly (4); The lifting components (4) include at least two components, which are fixed on the frame (1) and are used to lift and position the tray (2) above the lifting components (4); The three-axis mechanical module assembly (5) is arranged on the frame (1) and is used to carry and drive the detection assembly (6) to move along three directions perpendicular to each other; The detection component (6) is used to detect the size and flatness of the battery cell module on the tray (2) after being lifted and positioned.

2. The battery cell module size and flatness detection device according to claim 1, characterized in that: The bottom of the tray (2) is provided with a positioning hole (21), and the top of the lifting assembly (4) is provided with a positioning pin (41), and the positioning pin (41) is selectively inserted into the positioning hole (21) to position the tray (2).

3. The battery cell module size and flatness detection device according to claim 2, characterized in that: The bottom of the tray (2) is also provided with a cushion block (22), and the top of the lifting assembly (4) is also provided with a support block (42), wherein: The positioning holes (21) and the cushion blocks (22) are arranged in groups side by side along the moving direction of the conveying module (3); The support block (42) is selectively pressed against the cushion block (22) to lift and support the tray (2).

4. The battery cell module size and flatness detection device according to claim 3, characterized in that: The lifting assembly (4) further comprises a cylinder seat (43), a cylinder (44) and a lifting plate (45), wherein: The cylinder seat (43) is fixedly connected to the frame (1); The cylinder (44) is arranged below the cylinder seat (43) and is used to lift the lifting plate (45) upwards; The lifting plate (45) is arranged at the output end of the cylinder (44) and is used to support the positioning pin (41) and the supporting block (42).

5. The battery cell module size and flatness detection device according to claim 4, characterized in that: The lifting assembly (4) further comprises a proximity switch (46), which is arranged on the lifting plate (45) and is used to monitor whether the tray (2) is lifted into place.

6. The battery module size and flatness detection device according to claim 1, characterized in that: The conveying module (3) comprises a slide rail (31) and a driving assembly (32), wherein: The slide rail (31) is arranged on the frame (1) to carry and transport the tray (2); The driving assembly (32) drives the tray (2) to move along the slide rail (31).

7. The battery cell module size and flatness detection device according to claim 1, characterized in that: The three-axis mechanical module assembly (5) comprises a bracket (51), an X-axis linear module (52), a Y-axis linear module (53), a Z-axis linear module (54) and a sliding block (55), wherein: The bracket (51) is arranged on the frame (1); The X-axis linear module is arranged on the bracket (51) and is used to drive the Y-axis linear module (53) to move along a conveying direction parallel to the conveying module (3); The Y-axis linear module (53) is used to drive the Z-axis linear module (54) to move along a conveying direction perpendicular to the conveying module (3); The Z-axis linear module (54) is used to drive the sliding block (55) to move along the vertical direction; The sliding block (55) is fixedly connected to the detection component (6).

8. The battery module size and flatness detection device according to claim 7, characterized in that: The detection component (6) comprises a connecting portion (61), a 2D camera (62) and a 3D camera (63), wherein: The connecting portion (61) is fixedly connected to the sliding block (55); The 2D camera (62) is fixedly arranged at the lower end of the connecting portion (61) and is used to detect the size of the battery module; The 3D camera (63) is fixedly connected to the connecting portion (61) and is disposed on one side of the 2D camera (62) for performing flatness detection on the battery cell module.

9. The battery module size and flatness detection device according to claim 7, characterized in that: It also includes a calibration plate assembly (7), wherein the calibration plate assembly (7) includes a column (71) and a calibration plate (72), wherein: The upright column (71) is fixedly connected to the frame (1); The calibration plate (72) is arranged at the top of the column (71) and is arranged relative to the Y-axis linear module (53) for calibrating the detection component (6).

10. The battery cell module size and flatness detection device according to claim 1, characterized in that: The jacking components (4) include two jacking components (4), and the two jacking components (4) are arranged opposite to each other.

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