CN219715259U - Welding quality detection device for battery cell sealing nails - Google Patents
Welding quality detection device for battery cell sealing nails Download PDFInfo
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- CN219715259U CN219715259U CN202320701973.2U CN202320701973U CN219715259U CN 219715259 U CN219715259 U CN 219715259U CN 202320701973 U CN202320701973 U CN 202320701973U CN 219715259 U CN219715259 U CN 219715259U
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- 238000007789 sealing Methods 0.000 title claims abstract description 89
- 238000003466 welding Methods 0.000 title claims abstract description 76
- 238000001514 detection method Methods 0.000 title claims abstract description 49
- 230000033001 locomotion Effects 0.000 claims abstract description 97
- 230000005540 biological transmission Effects 0.000 claims abstract description 32
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 238000012372 quality testing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 238000003384 imaging method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
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Abstract
The utility model discloses a welding quality detection device for a battery cell sealing nail, and belongs to the technical field of battery cell detection. Comprises a bracket, a servo motion assembly, a motion controller, a camera and a ranging assembly; the driving piece of the servo motion assembly is fixedly connected with the bracket, the ranging assembly and the camera are respectively and fixedly connected with the output part of the transmission mechanism of the servo motion assembly, and the ranging assembly is used for measuring the height value of the top of the cell sealing nail and transmitting the height value to the motion controller; the driving piece is electrically connected with the motion controller, and the motion controller is used for driving the servo motion assembly to adjust the working height of the camera according to the height value; the camera is used for photographing the welding condition of the top of the battery cell sealing nail so as to detect the welding quality of the battery cell sealing nail. Through the regulation of range finding subassembly, motion controller and servo motion subassembly to camera working height, guarantee the definition that the camera was got the image to electric core seal nail top welding condition for electric core seal nail welding quality testing result is more accurate.
Description
Technical Field
The utility model belongs to the technical field of battery cell detection, and particularly relates to a battery cell sealing nail welding quality detection device.
Background
As the main force army in the technical field of new energy power batteries, the lithium battery technology is continuously updated, and the requirements on the detection capability of welded products are more and more severe. The sealing nail welding is an important process for completely isolating the inside of the battery from the external environment, and the conditions of welding spot explosion welding, welding leakage, pinholes and partial welding tend to occur easily during the sealing nail welding, so that the performance of the power battery is greatly reduced and even scrapped. Therefore, the welding quality detection of the battery cell sealing nail provides reliable guarantee for the quality of the lithium battery.
In the prior art, a camera mainly based on 2D imaging is utilized to perform plane image capturing above the battery cell sealing nails so as to detect the welding quality of the battery cell sealing nails, wherein the shooting height of the camera is relatively fixed.
The prior art has at least the following problems: in the long-time production and processing process, the height of the battery cell cannot be kept consistent, the shooting height of the camera is relatively fixed, the distance between the camera and the top of the battery sealing nail can be greatly changed, the depth of field error range of the camera is exceeded, and the camera images in a fuzzy manner and cannot be effectively detected.
Disclosure of Invention
The embodiment of the utility model aims to provide a welding quality detection device for a battery cell sealing nail, which can solve the problems that in the prior art, the height of a battery cell cannot be kept consistent in the production and processing process, so that the distance between a camera and the battery cell sealing nail is greatly changed, the depth of field error range of the camera is exceeded, the imaging of the camera is fuzzy, and effective detection cannot be performed.
In order to solve the technical problems, the utility model is realized as follows:
the utility model provides a welding quality detection device for a battery cell sealing nail, which comprises a bracket, a servo motion assembly, a motion controller, a camera and a ranging assembly, wherein the bracket is arranged on the bracket; the servo motion assembly comprises a driving piece and a transmission mechanism, the driving piece is fixedly connected with the support, the driving piece is fixedly connected with an input part of the transmission mechanism, the distance measuring assembly and the camera are respectively and fixedly connected with an output part of the transmission mechanism, the input part is movably connected with the output part, and the power of the driving piece is transmitted to the output part through the input part; the distance measuring assembly is electrically connected with the motion controller and is used for measuring the height value of the top of the battery cell sealing nail and transmitting the height value to the motion controller; the driving piece is electrically connected with the motion controller, and the motion controller is used for driving the servo motion assembly to drive the distance measuring assembly and the camera to move to a position above the top of the battery cell sealing nail and driving the servo motion assembly to adjust the working height of the camera according to the height value; the camera is used for photographing the welding condition of the top of the battery cell sealing nail so as to detect the welding quality of the battery cell sealing nail.
According to the welding quality detection device for the battery cell sealing nail, provided by the utility model, the height value of the top of the battery cell sealing nail is measured through the distance measuring component, the height value is fed back to the motion controller, the motion controller drives the servo motion component to adjust the working height of the camera, the definition of the camera for taking an image of the welding condition of the top of the battery cell sealing nail is ensured, and the welding quality detection result of the battery cell sealing nail is more accurate.
Drawings
FIG. 1 is an isometric view of a welding quality detection device for a battery cell sealing nail provided by an embodiment of the utility model;
FIG. 2 is a schematic diagram of a drag chain and output connection structure in an embodiment of the present utility model;
FIG. 3 is a schematic view of a camera and a ranging device according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of an operation platform and a transmission assembly according to an embodiment of the present utility model.
Reference numerals:
1-bracket, 2-servo motion assembly, 21-driving piece, 22-transmission mechanism, 221-first servo transmission assembly, 222-second servo transmission assembly, 223-third servo transmission assembly, 2211-input part, 2212-first servo motion assembly output part, 2221-second servo motion assembly input part, 2222-second servo motion assembly output part, 2231-third servo motion assembly input part, 2232-output part, 31-mounting plate, 32-mounting plate fixing piece, 33-drag chain, 34-drag chain fixing plate, 35-drag chain groove, 41-camera, 42-light source, 5-distance measuring assembly, 60-operation platform, 61-turntable, 62-tray, 601-welding quality detection station, 63-rotating shaft, 7-transmission assembly.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the technology of detecting the welding quality of the cell sealing nail, a camera 41 mainly based on 2D imaging is generally used for planar image capturing of the top of the cell sealing nail, so as to detect the welding quality of the sealing nail. The distance of the clear image presented by the camera 41 in the range before and after the focus is completed is referred to as depth of field, wherein the distance from the focus in the direction close to the lens of the camera 41 to be clear image is referred to as front depth of field, and the distance from the focus in the direction away from the lens of the camera 41 to be clear image is referred to as rear depth of field. In other words, the camera 41 can obtain a clear planar image of the top of the cell sealing nail only if the range of fluctuation of the distance error between the top of the cell sealing nail and the camera 41 is within the range of depth of field of the camera 41, and the currently adopted range of depth of field of the camera 41 for detecting the welding quality of the cell sealing nail is within 2 mm.
The embodiment of the utility model provides a welding quality detection device for a battery cell sealing nail, and referring to fig. 1, the welding quality detection device for the battery cell sealing nail comprises a bracket 1, a servo motion assembly 2, a motion controller, a camera 41 and a distance measuring assembly 5; the servo motion assembly 2 comprises a driving member 21 and a transmission mechanism 22, the driving member 21 is fixedly connected with the bracket 1, the driving member 21 is fixedly connected with an input part 2211 of the transmission mechanism 22, the distance measuring assembly 5 and the camera 41 are respectively fixedly connected with an output part 2232 of the transmission mechanism 22, wherein the input part 2211 is movably connected with the output part 2232, and the power of the driving member 21 is transmitted to the output part 2232 through the input part 2211; the distance measuring assembly 5 is electrically connected with the motion controller, and the distance measuring assembly 5 is used for measuring the height value of the top of the cell sealing nail and transmitting the height value to the motion controller; the driving piece 21 is electrically connected with the motion controller, and the motion controller is used for driving the servo motion assembly 2 to drive the distance measuring assembly 5 and the camera 41 to move to a position above the top of the cell sealing nail, and driving the servo motion assembly 2 according to the height value to adjust the working height of the camera 41; the camera 41 is used for photographing the welding condition of the top of the battery cell sealing nail so as to detect the welding quality of the battery cell sealing nail.
Specifically, fig. 1 shows an isometric view of a device for detecting welding quality of a battery cell sealing nail, which is provided by the embodiment of the utility model, and the device for detecting welding quality of the battery cell sealing nail comprises a bracket 1, a servo motion assembly 2, a motion controller, a camera 41 and a ranging assembly 5. The servo motion assembly 2 can move along any one of the three orthogonal directions of the X axis, the Y axis and the Z axis shown in fig. 1, and the servo motion assembly 2 may take a structural form including, but not limited to, a mechanical arm, an articulated robot or a three-axis transmission assembly, and considering the manufacturing cost and the operation convenience, the servo motion assembly 2 in the embodiment of the present utility model is a three-axis transmission assembly, including the driving element 21 and the transmission mechanism 22, the driving element 21 in the embodiment of the present utility model adopts a 400W servo driving motor, the driving element 21 is fixedly connected with the bracket 1, and the transmission mechanism 22 includes a first servo transmission assembly 221, a second servo transmission assembly 222 and a third servo transmission assembly 223. The driving piece 21 is fixedly connected with the input part 2211 of the first servo transmission component 221, the input part 2211 is movably connected with the first servo motion component output part 2212 through a screw rod mechanism, and the first servo motion component output part 2212 is driven by the driving piece 21 to positively or negatively move along the X axis in fig. 1 relative to the input part 2211; the second servo motion assembly input part 2221 is fixedly connected with the first servo motion assembly output part 2212, the second servo motion assembly input part 2221 is movably connected with the second servo motion assembly output part 2222 through a screw rod mechanism, and is driven by a driving piece on the second servo transmission assembly 222, and the second servo motion assembly output part 2222 moves positively or negatively relative to the second servo motion assembly input part 2221 along the Y axis in fig. 1; the third servo motion assembly input unit 2231 is fixedly connected with the second servo motion assembly output unit 2222, the third servo motion assembly input unit 2231 is movably connected with the third servo motion assembly output unit 2232 through a screw mechanism, and is driven by a driving piece on the third servo transmission assembly 223, and the output unit 2232 of the third servo motion assembly 223 moves positively or negatively along the Z axis in fig. 1 relative to the third servo motion assembly input unit 2231. The distance measuring component 5 and the camera 41 are respectively and fixedly connected with the output part 2232 of the transmission mechanism 22, wherein the camera 41 mainly based on 2D imaging is used for photographing the welding condition of the top of the battery cell sealing nail, so as to detect the welding quality of the battery cell sealing nail, and the distance measuring component 5 is used for measuring the height value of the top of the battery cell sealing nail.
Specifically, the motion controller is located on an external circuit control system of the welding quality detection device for the electric core sealing nail, and is electrically connected with the driving piece 21 of the servo motion assembly 2 and the ranging assembly 5, after the ranging assembly 5 feeds back the measured height value of the top of the electric core sealing nail to the motion controller, the motion controller calculates the height deviation, combines the depth of field range error of the camera 41, and outputs a height compensation instruction to the driving piece 21 of the servo motion assembly 2, namely, drives the servo motion assembly 2 to adjust the working height of the camera 41, namely, adjusts the working height of the camera 41 according to the height change of the top of the electric core sealing nail so as to obtain a clearer planar image. Motion controllers, including but not limited to PLC controllers, are digital operation controllers with a microprocessor for automated control, which control various types of machinery or production processes through digital input and output.
In some embodiments, the welding quality of the cell seal pin is detected by the following method:
firstly, before the detection work starts, the imaging definition of the camera 41 is firstly obtained, namely, the height value H of the battery cell when the focal length of the camera 41 falls on the top of the battery cell sealing nail 0 。
Step two, the motion controller sends a motion instruction to the driving piece 21, drives the first servo transmission assembly 221, the second servo transmission assembly 222 and the third servo transmission assembly 223 to act simultaneously, drives the ranging assembly 5 to move above the top of the cell sealing nail, and the ranging assembly 5 scans and measures a real-time height value H of the top of the cell sealing nail 1 And sends the measured values to the motion controller.
Step three, the motion controller is used for controlling the electric core sealing nail according to the real-time height value H of the top of the electric core sealing nail 1 The depth of field range of the combined camera 41 includes a front depth of field range Δl 1 Rear depth of field range ΔL 2 To determine whether to issue a height compensation command to the driving member 21, specifically, when H 1 ＞H 0 When Δh=h is calculated 1 -H 0 If ΔH is less than or equal to ΔL 1 Then the height compensation instruction does not need to be sent out; if DeltaH > DeltaL 1 The height compensation command needs to be sent to the driving piece 21, and the driving output part 2232 moves upwards along the Z-axis direction in fig. 1 relative to the third servo motion assembly input part 2231, that is, the distance between the lens of the camera 41 and the top of the cell sealing nail gradually increases until the shooting distance error of the lens of the camera 41 from the top of the cell sealing nail is within the depth of field range of the camera 41; when H is 1 ＜H 0 When Δh=h is calculated 0 -H 1 If ΔH is less than or equal to ΔL 2 No height compensation command needs to be issued, if ΔH > ΔL 2 The height compensation command needs to be sent to the driving piece 21, and the driving output part 2232 moves downwards relative to the third servo motion assembly input part 2231 along the Z-axis direction in fig. 1, that is, the distance between the lens of the camera 41 and the top of the cell sealing nail gradually decreases until the shooting distance error of the lens of the camera 41 from the top of the cell sealing nail is within the depth of field range of the camera 41; when H is 1 ＝H 0 When the height compensation command is not required.
Step four, the motion controller drives the driving members on the first servo motion assembly 221 and the second servo motion assembly 222 to act, so that the first servo motion assembly output portion 2212 moves along the X-axis direction in fig. 1 relative to the input portion 2211, and the second servo motion assembly output portion 2222 moves along the Y-axis direction in fig. 1 relative to the second servo motion assembly input portion 2221, that is, drives the camera 41 to move to a position right above the top of the cell sealing nail in the XY-plane direction in fig. 1, and can start the plane image capturing operation of the top of the cell sealing nail.
And fifthly, the camera 41 performs plane image capturing on the top of the battery cell sealing nail so as to detect the welding quality of the battery cell sealing nail.
By adopting the welding quality detection device for the cell sealing nail provided by the embodiment of the utility model, the distance measuring component 5 measures the height value of the top of the cell sealing nail in real time, the motion controller gives the height compensation instruction to the driving piece 21 of the servo motion component 2 according to the real-time height value of the cell sealing nail and the depth of field range of the camera 41, and drives the servo motion component 2 to adjust the working height of the camera 41, so that the error value of the distance between the lens of the camera 41 and the top of the cell sealing nail is ensured to be within the depth of field range of the camera 41, namely the consistency of the image capturing distance of the camera 41 is ensured, and the factor that the height of the cell cannot be kept consistent in the production, processing and conveying processes is eliminated. The definition of the plane image of the camera 41 is ensured, and the welding quality detection result of the battery cell sealing nail is more accurate.
Optionally, referring to fig. 1 and 3, the welding quality detection device for the electric core sealing nail further includes a mounting plate 31; the camera 41 and the distance measuring assembly 5 are respectively and fixedly connected with the mounting plate 31, and the mounting plate 31 is fixedly connected with the output unit 2232.
Specifically, fig. 3 shows a schematic structural diagram of the camera 41 and the ranging component 5 in the embodiment of the utility model, where the camera 41 and the ranging component 5 are fixed on the mounting plate 31, and the mounting plate 31 is fixedly connected with the output part 2232 of the third servo motion component 223. That is, the camera 41 and the distance measuring unit 5 are fixedly connected with the output unit 2232 of the third servo movement unit 223 by the mounting plate 31, so that the fixing area of the camera 41 and the distance measuring unit 5 is enlarged, and the connection is more firm. In fig. 3, the structures of the camera 41 and the distance measuring unit 5 are only illustrated, and the mounting positions thereof are shown with reference to fig. 1, that is, the camera 41 and the distance measuring unit 5 are respectively fixed to both sides of the mounting plate 31, thereby reducing the volume of the device and enhancing the compactness.
Optionally, referring to fig. 1, the device for detecting welding quality of the cell sealing nail further includes a mounting plate fixing member 32; one end of the mounting plate fixing member 32 is fixedly connected to the output portion 2232, and the other end is fixedly connected to the mounting plate 31.
Specifically, as shown in fig. 1, the mounting plate holder 32 has an "L" shape, and one end thereof is fixedly connected to the output unit 2232, and the other end thereof is fixedly connected to the mounting plate 31. On the basis of ensuring reliable connection, the fixing area of the mounting plate 31 and the output part 2232 is reduced, and the device is more convenient to disassemble and overhaul.
Optionally, referring to fig. 1 and 2, the welding quality detection device for the electric core sealing nail further includes a drag chain 33, a drag chain fixing plate 34 and a drag chain groove 35; one end of the drag chain 33 is fixedly connected with the drag chain fixing plate 34, the drag chain fixing plate 34 is fixedly connected with the output portion 2232, the other end of the drag chain 33 is fixedly connected with the bracket 1, the drag chain 33 is embedded in the drag chain groove 35 and is contracted or expanded along with the movement of the output portion 2232, and the drag chain 33 is used for accommodating the electric circuit of the camera 41 and the distance measuring assembly 5.
Specifically, fig. 2 shows a schematic diagram of a connection structure between the drag chain 33 and the output portion 2232 in the embodiment of the present utility model, and in combination with fig. 1, the drag chain 33 is fixedly connected to the output portion 2232 through the drag chain fixing plate 34, and the drag chain 33 is used for accommodating the electrical circuits of the camera 41 and the ranging assembly 5, and since the camera 41 and the ranging assembly 5 are fixedly connected to the output portion 2232 of the third servo motion assembly 223, when the output portion 2232 moves relative to the input portion 2231 of the third servo motion assembly along the Z-axis in fig. 1 and 2, the drag chain 33 is retracted or extended along with the movement of the output portion 2232 in the drag chain groove 35, so that the drag chain 33 moves synchronously with the camera 41 and the ranging assembly 5, and the electrical circuits on the camera 41 and the ranging assembly 5 are not pulled and broken due to the movement.
Optionally, referring to fig. 3, the device for detecting welding quality of the electric core sealing nail further includes a light source 42; the light source 42 is fixedly connected with the mounting plate 31, the light source 42 is arranged in front of the camera 41 lens, and the light source 42 is used for supplementing light to the battery cell sealing nail positioned in front of the camera 41 lens.
Specifically, as shown in fig. 3, a light source 42 is disposed along the negative Z-axis direction, that is, in front of the lens of the camera 41, and the center of the light source 42 faces the lens of the camera 41, so as to shine the planar imaging of the camera 41, eliminate imaging shadows, and facilitate the formation of a clearer planar image of the cell seal nail, where the light source 42 takes forms including, but not limited to, a point light source, an annular light source, or a strip light source.
Alternatively, referring to fig. 3, the light source 42 is annular, and the projection of the lens of the camera 41 falls inside the light source 42 along the optical axis direction of the lens of the camera 41.
Specifically, as shown in fig. 3, the light source 42 in the embodiment of the present utility model is an annular light source, and along the optical axis direction of the lens of the camera 41, the projection of the lens of the camera 41 falls inside the light source 42, so that the top edge and the height change of the cell sealing nail can be highlighted, which is beneficial for the camera 41 to obtain a clear and complete planar image.
Optionally, the ranging component 5 is a 3D camera or a three-dimensional ranging sensor.
Specifically, the ranging component 5 is a 3D camera or a three-dimensional ranging sensor, and considering the use cost and the operation convenience, the ranging component 5 of the embodiment of the utility model adopts the 3D camera, has the functions of stereoscopic imaging and distance measurement, and is widely used in the technical field of battery cell vision detection.
Optionally, referring to fig. 4, the device for detecting welding quality of the electric core sealing nail further comprises an operation platform 60, a turntable 61 and a plurality of trays 62; the operation platform 60 is disposed adjacent to the stand 1, and the operation platform 60 is located below the movement area of the camera 41 and the distance measuring component 5; the turntable 61 is rotatably connected with the operation platform 60; a plurality of trays 62 are attached to the turntable 61 near the outer periphery, the trays 62 being configured to carry the electrical cells.
Specifically, fig. 4 shows a schematic structural diagram of the operation platform 60 and the transfer assembly 7 according to the embodiment of the present utility model. The operation platform 60 is arranged adjacent to the bracket 1 and is positioned below the movement area of the camera 41 and the distance measuring assembly 5, the rotary table 62 is rotationally connected with the surface of the operation platform 60 through a rotary shaft 63, a plurality of trays 62 are connected to the rotary table 61 near the periphery, the trays 62 are used for bearing electric cores, and the electric cores are driven to different positions of the operation platform 60 through the rotation of the rotary table 62 to carry out processing, detection or assembly operation.
Optionally, referring to fig. 4, a welding quality detection station 601 is disposed on the operation platform 60; the welding quality detection station 601 is located outside the turntable 61; the welding quality detection station 601 is used for placing a battery cell which needs to be subjected to sealing nail welding quality detection.
Specifically, as shown in fig. 4, a plurality of operation stations are disposed on the turntable 61 near the outer periphery, and are respectively used for placing the battery cells requiring processing, detecting or assembling operations, wherein the operation stations include a welding quality detection station 601 for placing the battery cells requiring sealing nail welding quality detection. The turntable 61 drives the tray 62 carrying the battery cells to move to a position close to the welding quality detection station 601, and an operator takes the battery cells out of the tray 62 through a manipulator or manual operation and places the battery cells at the quality detection station 601, so that the welding quality detection work of the battery cell sealing nails in the previous embodiment can be started.
Optionally, referring to fig. 4, the welding quality detection device of the cell sealing nail further comprises a conveying assembly 7; the conveying assembly 7 is connected with one side of the operation platform 60; the transmission component 7 is used for transmitting the battery cell to be detected to the operation platform 60, and/or the transmission component 7 is used for outputting the battery cell which is finished being detected from the operation platform 60.
Specifically, as shown in fig. 4, the conveying component 7 is connected to one side of the operation platform 60, the conveying component 7 moves along the arrow direction in fig. 4 to drive the battery cell to the operation platform 60, the battery cell is loaded into the tray 62 by an operator, the turntable 61 rotates clockwise, finally the battery cell is driven to come close to the welding quality detection station 601, and after the welding quality detection work of the battery cell sealing nail is finished, the conveying component 7 drives the battery cell to leave the operation platform 60. The conveying assembly 7 can adopt a structure of a conveying belt or a conveying chain, wherein the conveying belt has strong bearing capacity, is efficient and stable in operation and is more widely used.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.
Claims (10)
1. The welding quality detection device for the battery cell sealing nail is characterized by comprising a bracket (1), a servo motion assembly (2), a motion controller, a camera (41) and a distance measuring assembly (5);
the servo motion assembly (2) comprises a driving piece (21) and a transmission mechanism (22), the driving piece (21) is fixedly connected with the support (1), the driving piece (21) is fixedly connected with an input part (2211) of the transmission mechanism (22), the distance measuring assembly (5) and the camera (41) are respectively and fixedly connected with an output part (2232) of the transmission mechanism (22), the input part (2211) is movably connected with the output part (2232), and the power of the driving piece (21) is transmitted to the output part (2232) through the input part (2211);
the distance measuring assembly (5) is electrically connected with the motion controller, and the distance measuring assembly (5) is used for measuring the height value of the top of the cell sealing nail and transmitting the height value to the motion controller;
the driving piece (21) is electrically connected with the motion controller, and the motion controller is used for driving the servo motion assembly (2) to drive the distance measurement assembly (5) and the camera (41) to move to the position above the top of the cell sealing nail, and driving the servo motion assembly (2) to adjust the working height of the camera (41) according to the height value;
the camera (41) is used for photographing the welding condition of the top of the battery cell sealing nail so as to detect the welding quality of the battery cell sealing nail.
2. The cell sealing-nail welding quality detection device according to claim 1, characterized in that it further comprises a mounting plate (31);
the camera (41) and the distance measuring component (5) are respectively and fixedly connected with the mounting plate (31), and the mounting plate (31) is fixedly connected with the output part (2232).
3. The cell sealing-nail welding quality detection device according to claim 2, characterized in that it further comprises a mounting plate fixture (32);
one end of the mounting plate fixing piece (32) is fixedly connected with the output part (2232), and the other end of the mounting plate fixing piece is fixedly connected with the mounting plate (31).
4. The device for detecting the welding quality of the battery cell sealing nail according to claim 1, wherein the device for detecting the welding quality of the battery cell sealing nail further comprises a drag chain (33), a drag chain fixing plate (34) and a drag chain groove (35);
one end of the drag chain (33) is fixedly connected with the drag chain fixing plate (34), the drag chain fixing plate (34) is fixedly connected with the output part (2232), the other end of the drag chain (33) is fixedly connected with the support (1), the drag chain (33) is embedded in the drag chain groove (35) and is contracted or expanded along with the movement of the output part (2232), and the drag chain (33) is used for accommodating the camera (41) and the electric circuit of the distance measuring assembly (5).
5. The cell sealing-nail welding quality detection apparatus according to claim 2, characterized in that the cell sealing-nail welding quality detection apparatus further comprises a light source (42);
the light source (42) is fixedly connected with the mounting plate (31), the light source (42) is arranged in front of the camera (41) lens, and the light source (42) is used for supplementing light to the battery cell sealing nail positioned in front of the camera (41) lens.
6. The device for detecting the welding quality of the battery cell sealing nail according to claim 5, wherein the light source (42) is annular, and the projection of the lens of the camera (41) falls inside the light source (42) along the optical axis direction of the lens of the camera (41).
7. The device for detecting the welding quality of the cell sealing nails according to claim 1, characterized in that the ranging assembly (5) is a 3D camera or a three-dimensional ranging sensor.
8. The device for detecting the welding quality of the battery cell sealing nail according to claim 1, wherein the device for detecting the welding quality of the battery cell sealing nail further comprises an operation platform (60), a turntable (61) and a plurality of trays (62);
the operation platform (60) is arranged adjacent to the bracket (1), and the operation platform (60) is positioned below the movement areas of the camera (41) and the distance measuring component (5);
the turntable (61) is rotationally connected with the operation platform (60);
a plurality of trays (62) are connected to the turntable (61) near the periphery, and the trays (62) are used for bearing the battery cells.
9. The welding quality detection device for the cell sealing nails according to claim 8, characterized in that a welding quality detection station (601) is arranged on the operation platform (60);
the welding quality detection station (601) is positioned outside the turntable (61); the welding quality detection station (601) is used for placing a battery cell which needs to be subjected to sealing nail welding quality detection.
10. The cell sealing-nail welding quality detection device according to claim 8, characterized in that it further comprises a conveying assembly (7);
the conveying assembly (7) is connected with one side of the operation platform (60);
the transmission assembly (7) is used for transmitting the battery cell to be detected onto the operation platform (60), and/or the transmission assembly (7) is used for outputting the battery cell subjected to detection from the operation platform (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320701973.2U CN219715259U (en) | 2023-03-28 | 2023-03-28 | Welding quality detection device for battery cell sealing nails |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320701973.2U CN219715259U (en) | 2023-03-28 | 2023-03-28 | Welding quality detection device for battery cell sealing nails |
Publications (1)
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| CN117647487A (en) * | 2024-01-29 | 2024-03-05 | 宁德思客琦智能装备有限公司 | Welding quality detection device for battery cell sealing nails |
| CN117647487B (en) * | 2024-01-29 | 2024-04-12 | 宁德思客琦智能装备有限公司 | Welding quality detection device for battery cell sealing nails |
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