Cylindrical cell size detection mechanism

Abstract

The utility model relates to the technical field of battery cell detection, and provides a cylindrical battery cell dimension detection mechanism. The lifting assembly comprises a fixing part, a lifting part connected to the fixing part in a sliding mode and a roller wheel set connected to the lifting part in a rotating mode, the roller wheel set comprises two roller wheels arranged side by side in a front-back mode, and the axes of the roller wheels are parallel to the X direction; the rotating assembly comprises a rotating driving part and a rotating driving roller of which the axis is parallel to the X direction; the rotary driving roller is connected with the output end of the rotary driving part, the rotary driving roller is rotationally connected with the fixing part, and the rotary driving roller is arranged above the roller set; a to-be-tested battery cell is clamped between the roller and the rotary driving roller; the detection assembly is arranged on one side of the rotating assembly in the Y direction, and the Y direction is perpendicular to the X direction; the detection assembly comprises a CCD installation part and a cell size detection CCD connected to the CCD installation part. According to the utility model, the detection accuracy is improved and the detection efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core detection, in particular to a cylindrical battery core size detection mechanism. Background Art

[0002] The height and diameter of cylindrical cells are process parameters that must be controlled during the production process. Affected by objective factors such as the thickness of raw materials and the performance of the equipment itself, the diameter and height of the cell products produced during the production process will vary within a certain range. When the difference exceeds the allowable deviation, the cells in the subsequent process will not be able to be properly shelled. In order to ensure that the produced batteries can be assembled normally, it is necessary to determine whether the cell diameter and height are qualified before assembly, and unqualified products must be removed in a timely manner.

[0003] Most of the existing diameter and height detection methods are through manual measurement or sensor measurement devices. Manual measurement is inefficient and has large errors, and cannot guarantee the accuracy of battery cell size detection; sensor measurement has limitations, and each time the model is changed, personnel need to readjust the sensor position and calibration accuracy. In addition, if the battery cell diameter is elliptical, there is a risk of missed detection in sensor measurement and manual detection methods. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the existing technology.

[0005] In order to solve the above technical problems, on the one hand, the utility model provides a cylindrical battery cell size detection mechanism, comprising:

[0006] The lifting assembly comprises a fixed part, a lifting part slidably connected to the fixed part, and a roller group rotatably connected to the lifting part, wherein the roller group comprises two rollers arranged side by side in front and behind, and the axis of the rollers is parallel to the X direction;

[0007] The rotating assembly includes a rotating driving part and a rotating driving roller whose axis is parallel to the X direction; the rotating driving part is connected to the fixed part, the rotating driving roller is connected to the output end of the rotating driving part, the rotating driving roller is rotatably connected to the fixed part, and the rotating driving roller is arranged above the roller group; the battery cell to be tested is clamped between the roller and the rotating driving roller;

[0008] The detection component is arranged on one side of the rotating component along the Y direction, and the Y direction is perpendicular to the X direction; the detection component includes a CCD mounting component and a cell size detection CCD connected to the CCD mounting component.

[0009] In one embodiment of the utility model, the lifting part includes a lifting plate with a U-shaped structure and a lifting drive. The lifting plate is arranged between two mounting plates. The lifting plate includes two vertical plates and a connecting plate fixedly connected to the bottom of the two vertical plates. The output end of the lifting drive is fixedly connected to the mounting plate.

[0010] In one embodiment of the utility model, the present application also includes a transmission component, which includes a frame, a conveyor belt for conveying the battery cell to be tested, and a battery cell carrier; the battery cell carrier is connected to the conveyor belt, and the battery cell to be tested is placed on the battery cell carrier.

[0011] In one embodiment of the utility model, there are two roller groups, which are symmetrically arranged on the left and right, with a gap between the two roller groups, and the gap is smaller than the height of the battery cell to be tested.

[0012] In one embodiment of the utility model, the present application also includes a sensor for identifying whether the battery cell to be tested is in place.

[0013] In one embodiment of the utility model, the detection component further comprises a CCD light source arranged on a side of the rotating component away from the battery cell size detection CCD.

[0014] In one embodiment of the utility model, the detection component also includes an adjustment unit for adjusting the distance between the battery cell size detection CCD and the battery cell to be tested.

[0015] In one embodiment of the utility model, the adjusting part includes a connecting piece and a connecting bolt. The connecting piece is provided with a waist-shaped hole extending along the Y direction. The connecting bolt passes through the waist-shaped hole and is fixedly connected to the CCD mounting piece.

[0016] In one embodiment of the utility model, the detection assembly further includes a protective cover arranged above the battery cell size detection CCD, and the protective cover is connected to the top of the CCD mounting part.

[0017] In one embodiment of the utility model, there are multiple battery cell size detection CCDs, and the multiple battery cell size detection CCDs are arranged in parallel along the X direction.

[0018] In one embodiment of the utility model, the present application further includes a control unit, which is electrically connected to the sensor, the lifting unit, the rotation drive unit, and the battery cell size detection CCD.

[0019] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0020] The cylindrical cell size detection mechanism described in the utility model, its lifting part can drive the cell to be tested placed thereon to rise and fall, until the cell to be tested contacts and squeezes the rotating drive roller, at this time, the rotating drive part drives the rotating drive roller to rotate, thereby driving the cell to be tested to rotate, and at this time, the roller also rotates, and during the rotation of the cell to be tested, the cell size detection CCD performs a 360-degree scanning detection on the cell to be tested, so that the upper and lower edges of the cell to be tested can be grasped to measure the cell diameter and the two end faces can be grasped to measure the cell height size. Since the present application performs a 360-degree scanning during the rotation of the cell, it can scan the entire circumference of the cell for detection, thereby improving the accuracy of the detection and having high detection efficiency; the elliptical cell can be accurately detected, solving the problem of missed detection; during the rotation of the cell to be tested, the cell with protruding end faces and poor height size can also be synchronously detected, and the detection accuracy is high. In addition, the present embodiment can be applied to the detection of cells with different diameter specifications, has a wide range of applications, and can be used directly when the cell specifications are changed, without the need to readjust, replace components or calibrate, which is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model and in combination with the accompanying drawings, wherein:

[0022] Figure 1 This is a structural schematic diagram of a cylindrical battery cell size detection mechanism in a preferred embodiment of the utility model;

[0023] Figure 2 for Figure 1 A partial schematic diagram of a cylindrical battery cell size detection mechanism is shown;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure of a cylindrical battery cell size detection mechanism (excluding the transmission component);

[0025] Figure 4 for Figure 1 A schematic diagram of the structure of a cylindrical battery cell size detection mechanism (excluding the transmission component and the detection component);

[0026] Figure 5 for Figure 4 Front view of the diagram;

[0027] Figure 6 for Figure 4 Schematic diagram of the back side.

[0028] Description of the accompanying drawings: 100, lifting assembly; 110, fixing part; 111, mounting plate; 120, lifting part; 121, lifting drive; 122, vertical plate; 123, connecting plate; 130, roller group; 131, roller;

[0029] 200, rotating assembly; 210, rotating driving unit; 220, rotating driving roller; 230, rotating shaft;

[0030] 300, detection component; 310, CCD mounting part; 320, battery cell size detection CCD; 330, CCD light source; 340, adjustment part; 341, connecting part; 342, waist-shaped hole; 350, protective cover;

[0031] 400, battery cell to be tested;

[0032] 500, guide assembly; 510, guide rail; 520, slider;

[0033] 600, transmission component; 610, rack; 620, transmission belt; 630, battery cell carrier;

[0034] 700. Sensor. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the utility model and implement it, but the embodiments are not intended to limit the utility model.

[0036] Reference Figure 1 to Figure 6 As shown, the embodiment of the utility model provides a cylindrical battery cell size detection mechanism, comprising:

[0037] The lifting assembly 100 includes a fixed portion 110, a lifting portion 120 slidably connected to the fixed portion 110, and a roller group 130 rotatably connected to the lifting portion 120, wherein the roller group 130 includes two rollers 131 arranged side by side in front and back, and the axis of the rollers 131 is parallel to the X direction; in some embodiments, the fixed portion 110 includes two mounting plates 111 symmetrically arranged along the X direction; the lifting portion 120 includes a lifting plate and a lifting drive 121 of a U-shaped structure, wherein the lifting plate is arranged between the two mounting plates 111, and the lifting plate includes two vertical plates 122 and a connecting plate 123 fixedly connected to the bottom of the two vertical plates 122. The lifting drive 121 is fixedly connected to the mounting plate 111, and the output end of the lifting drive 121 is connected to the connecting plate 123. For example, the lifting drive 121 is a cylinder, an oil cylinder, etc. The extension and retraction of the lifting drive 121 drives the connecting plate 123 and the roller 131 connected to the connecting plate 123 to move up and down.

[0038] The rotating assembly 200 includes a rotating driving unit 210 and a rotating driving roller 220 whose axis is parallel to the X direction; the rotating driving unit 210 is connected to the fixing unit 110, the rotating driving roller 220 is connected to the output end of the rotating driving unit 210, the rotating driving roller 220 is rotatably connected to the fixing unit 110, and the rotating driving roller 220 is arranged above the roller group 130; the battery cell 400 to be tested is clamped between the roller 131 and the rotating driving roller 220, and the lifting unit 120 drives the roller group 130 and the battery cell 400 to be tested to move upward. After the test cell 400 is lifted and lowered until the test cell 400 contacts the rotating drive roller 220, the lifting part 120 continues to rise so that the rotating drive roller 220 and the roller 131 have a certain squeezing force on the test cell 400 (the squeezing force is controlled by the lifting stroke of the lifting part 120). In this way, the test cell 400 can be clamped by the roller 131 and the rotating drive roller 220 to ensure that the test cell 400 rotates smoothly for size detection without affecting the quality of the test cell 400. In some embodiments, the rotating drive part 210 is a motor. The motor is fixedly connected to the top of the mounting plate 111, and the output end (output shaft) of the motor extends along the X direction. The rotating drive roller 220 is coaxially connected with a rotating shaft 230, and both ends of the rotating shaft 230 are rotatably connected to the mounting plate 111 through bearings, and one end of the rotating shaft 230 is connected to the output end of the motor through a coupling.

[0039] The detection assembly 300 is arranged on one side of the rotating assembly 200 along the Y direction, and the Y direction is perpendicular to the X direction; the detection assembly 300 includes a CCD mounting member 310 and a cell size detection CCD 320 connected to the CCD mounting member 310. The CCD mounting member 310 is a door-type frame, and the CCD mounting member 310 is connected to a frame 610 (described below).

[0040] Specifically, the lifting part 120 in this embodiment can drive the battery cell 400 to be tested placed thereon to rise and fall until the battery cell 400 to be tested contacts and squeezes the rotating drive roller 220. At this time, the rotating drive part 210 drives the rotating drive roller 220 to rotate, thereby driving the battery cell 400 to be tested to rotate. At this time, the roller 131 also rotates. During the rotation of the battery cell 400 to be tested, the battery cell size detection CCD320 performs a 360-degree scanning detection on the battery cell 400 to be tested, so that the upper and lower edges of the battery cell 400 to be tested can be grasped to measure the battery cell diameter and the two end faces can be grasped to measure the battery cell height size. Since the present application performs a 360-degree scan during the rotation of the battery cell, it can scan the entire circumference of the battery cell for detection, thereby improving the accuracy of the detection and having high detection efficiency; the elliptical battery cell can be accurately detected, solving the problem of missed detection; during the rotation of the battery cell 400 to be tested, the battery cell with protruding end faces and poor height size can also be synchronously detected, and the detection accuracy is high. In addition, this embodiment can be applied to the detection of battery cells with different diameter specifications, has a wide range of applications, and can be used directly when the battery cell specifications are changed without the need for readjustment, replacement of components or calibration, which is more convenient and quick.

[0041] Further, the present application also includes a guide assembly 500, which includes a guide rail 510 and a slider 520 slidably connected to the guide rail 510, the guide rail 510 is vertically arranged and connected to the fixing portion 110, and the slider 520 is connected to the lifting portion 120. In some embodiments, there are two guide assemblies 500, and the guide assemblies 500 are arranged one-to-one with the mounting plate 111. The guide rail 510 of the guide assembly 500 is fixedly connected to the inner side of the mounting plate 111. The slider 520 is fixedly connected to the outer side of the vertical plate 122.

[0042] Specifically, the present embodiment is provided with a guide assembly 500 , which guides the process in which the lifting unit 120 drives the battery cell 400 to be tested to be lifted, thereby ensuring the stability of the lifting.

[0043] Furthermore, the present application also includes a transmission assembly 600, which includes a frame 610, a conveyor belt 620 for conveying the battery cell 400 to be tested, and a battery cell carrier 630; the battery cell carrier 630 is connected to the conveyor belt 620, and the battery cell 400 to be tested is placed on the battery cell carrier 630. In some embodiments, a plurality of battery cell carriers 630 are connected to the conveyor belt 620.

[0044] Specifically, in this embodiment, the transmission assembly 600 is used to transport the battery cells 400 to be tested and the battery cells after testing, which does not require manual handling, thereby reducing labor costs and improving testing efficiency.

[0045] Furthermore, there are two roller assemblies 130 , which are symmetrically arranged left and right (left and right, ie, in the X direction), and there is a gap between the two roller assemblies 130 , which is smaller than the height of the battery cell 400 to be tested.

[0046] Specifically, two roller groups 130 are provided in this embodiment, so that when the transmission component 600 transports the battery cell 400 to be tested to the bottom of the rotating component 200, the roller group 130 is located between the battery cell 400 to be tested and the belt, so that the roller group 130 is driven to rise by the lifting part 120 to lift the battery cell 400 to be tested and realize the separation of the battery cell 400 from the battery cell carrier 630, thereby realizing the automatic placement of the battery cell 400 to be tested, without the need to manually grab the battery cell 400 to be tested and place it on the roller 131 for testing, and without the need to manually remove the battery cell after the test. Therefore, this embodiment can improve the detection efficiency and reduce the labor cost. In addition, in this embodiment, the four rollers 131 of the two roller groups 130 can form an arc-shaped surface. When the four rollers 131 support the battery cell 400 to be tested, the arc-shaped surface is more conducive to fitting with the arc-shaped outer wall of the battery cell 400 to be tested, thereby further ensuring the stability of the lifting process and the rotation detection process of the battery cell 400 to be tested.

[0047] Furthermore, the present application also includes a sensor 700 for identifying whether the battery cell 400 to be tested is in place. In some embodiments, the sensor 700 is fixed on the frame 610.

[0048] Specifically, the sensor 700 provided in this embodiment can identify whether the battery cell 400 to be tested is in place, so as to facilitate the subsequent movement of the lifting unit 120 .

[0049] Furthermore, the detection component 300 also includes a CCD light source 330 disposed on a side of the rotating component 200 away from the battery cell size detection CCD 320 .

[0050] Specifically, the CCD light source 330 provided in this embodiment provides lighting for the battery cell size detection CCD 320 when shooting, thereby improving the clarity of the scanning and shooting of the battery cell size detection CCD 320 and further improving the detection accuracy.

[0051] Furthermore, the detection assembly 300 also includes an adjustment portion 340 for adjusting the distance between the cell size detection CCD 320 and the cell to be tested 400. In some embodiments, the adjustment portion 340 includes a connecting member 341 and a connecting bolt, and the connecting member 341 is provided with a waist-shaped hole 342 extending along the Y direction, and the connecting bolt passes through the waist-shaped hole 342 and is fixedly connected to the CCD mounting member 310.

[0052] Specifically, the present embodiment is provided with an adjustment unit 340, through which the distance between the cell size detection CCD 320 and the cell to be tested 400 can be adjusted, so that the cell size detection CCD 320 moves in the focal length direction, so that when detecting cells of different diameters, the cell size detection CCD 320 can be moved to correct the focal length position through the adjustment unit 340. It can be seen that the present embodiment can be applied to the detection of cells of different diameter specifications, and has a wide range of applications.

[0053] Furthermore, the detection assembly 300 also includes a protective cover 350 disposed above the battery cell size detection CCD 320 , and the protective cover 350 is detachably connected to the top of the CCD mounting member 310 .

[0054] Specifically, in this embodiment, a protective cover 350 is provided to protect the cell size detection CCD 320 to prevent dust from falling onto the cell size detection CCD 320 and affecting the detection effect.

[0055] Furthermore, the present application also includes a control unit, which is electrically connected to the sensor 700 , the lifting unit 120 , the rotation driving unit 210 , the battery cell size detection CCD 320 , and the transmission component 600 .

[0056] Specifically, the control unit in this embodiment can realize the linkage of the sensor 700, the lifting unit 120, the rotating drive unit 210, the belt, and the battery cell size detection CCD 320. In this way, when the belt drives the battery cell 400 to be tested to run under the rotating assembly 200, the sensor 700 can recognize it, and the sensor 700 transmits the signal to the control unit, so that the control unit controls the lifting unit 120 to rise and the belt to stop. As the lifting unit 120 rises, the roller 131 lifts the battery cell 400 to be tested from the battery cell carrier 630 until the battery cell 400 to be tested contacts the rotating drive roller 220 and generates a certain degree of extrusion (the extrusion force can be controlled by the lifting unit 120). After the battery cell to be tested reaches the testing position, the control unit controls the rotation drive unit 210 and the battery cell size detection CCD 320 to start, and the rotation drive unit 210 drives the rotation drive roller 220 to rotate, thereby rotating the battery cell 400 to be tested. During the rotation, the battery cell size detection CCD 320 grabs the upper and lower edges of the battery cell 400 to measure the diameter of the battery cell and the two end faces of the battery cell 400 to measure the height. It can be seen that this embodiment realizes full automation of battery cell size detection, improves detection efficiency, and reduces labor costs.

[0057] During the testing process of this application, the battery cell is lifted for 0.5S, rotated for 0.5S, and lowered for 0.5S. The entire testing action is shortened to 1.5S, which can meet the production capacity requirements of more than 35PPM. However, the existing testing mechanism has many parts, complex actions, and a long testing cycle.

[0058] This application can detect the diameter and height of the battery cell. It has a simple operation and a short test cycle, which greatly shortens the detection time and has high detection efficiency. It solves the problem of missed detection of elliptical battery cells and can simultaneously detect the protrusions and poor height of the battery cell end faces. It can be seen that this application can detect the diameter and height of the battery cell more efficiently and accurately. The mechanism of this application can be used for the diameter and height detection of cylindrical battery cells.

[0059] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the utility model creation.

Claims

1. A cylindrical battery cell size detection mechanism, characterized in that: include: The lifting assembly comprises a fixed part, a lifting part slidably connected to the fixed part, and a roller group rotatably connected to the lifting part, wherein the roller group comprises two rollers arranged side by side in front and back, and the axis of the rollers is parallel to the X direction; A rotating assembly, comprising a rotating driving part and a rotating driving roller whose axis is parallel to the X direction; the rotating driving part is connected to the fixed part, the rotating driving roller is connected to the output end of the rotating driving part, the rotating driving roller is rotatably connected to the fixed part, and the rotating driving roller is arranged above the roller group; the battery cell to be tested is clamped between the roller and the rotating driving roller; The detection component is arranged on one side of the rotating component along the Y direction, and the Y direction is perpendicular to the X direction; the detection component includes a CCD mounting component and a cell size detection CCD connected to the CCD mounting component.

2. The cylindrical battery core size detection mechanism according to claim 1, characterized in that: The lifting part includes a lifting plate with a U-shaped structure and a lifting drive. The lifting plate is arranged between two mounting plates. The lifting plate includes two vertical plates and a connecting plate fixedly connected to the bottom of the two vertical plates. The output end of the lifting drive is fixedly connected to the mounting plate.

3. The cylindrical battery core size detection mechanism according to claim 1, characterized in that: It also includes a transmission component, which includes a frame, a transmission belt for conveying the battery cell to be tested, and a battery cell carrier; the battery cell carrier is connected to the transmission belt, and the battery cell to be tested is placed on the battery cell carrier.

4. The cylindrical battery core size detection mechanism according to claim 3, characterized in that: There are two roller groups, which are symmetrically arranged on the left and right. There is a gap between the two roller groups, and the gap is smaller than the height of the battery cell to be tested.

5. The cylindrical battery core size detection mechanism according to claim 1, characterized in that: It also includes a sensor for identifying whether the battery cell to be tested is in place.

6. The cylindrical battery core size detection mechanism according to claim 5, characterized in that: It also includes a control unit, which is electrically connected to the sensor, the lifting unit, the rotation drive unit and the battery cell size detection CCD.

7. The cylindrical battery core size detection mechanism according to claim 1, characterized in that: The detection component also includes a CCD light source arranged on a side of the rotating component away from the battery cell size detection CCD.

8. The cylindrical battery core size detection mechanism according to claim 1, characterized in that: The detection component also includes an adjustment unit for adjusting the distance between the battery cell size detection CCD and the battery cell to be tested.

9. The cylindrical battery core size detection mechanism according to claim 8, characterized in that: The adjusting part comprises a connecting piece and a connecting bolt. The connecting piece is provided with a waist-shaped hole extending along the Y direction. The connecting bolt passes through the waist-shaped hole and is fixedly connected to the CCD mounting piece.

10. The cylindrical battery core size detection mechanism according to claim 1, characterized in that: There are multiple battery cell size detection CCDs, and the multiple battery cell size detection CCDs are arranged in parallel along the X direction.

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