Pre-welding current collector detection device and battery cell production system

Abstract

The utility model relates to the technical field of battery production, and discloses a pre-welding current collector detection device and a battery cell production system. The device comprises a position adjusting component and a detection component, the position adjusting component is used for moving a to-be-detected cell to a detection station, the detection component comprises an imaging assembly and a processing assembly, the imaging assembly is used for obtaining an image of a pre-welding current collector position of the to-be-detected cell, and the processing assembly is used for processing the image. And whether the pre-welding current collector of the battery cell meets the requirement is determined according to the image processing result. The battery cell production system comprises a transfer logistics line and the pre-welding current collector detection device. The detection device provided by the utility model adopts an automatic detection mode, can carry out comprehensive detection on products, avoids the phenomenon of missing detection, ensures the quality of finished products, can increase the detection efficiency, simultaneously reduces the labor cost, and in addition, the matching mode of the imaging assembly and the processing assembly can ensure the accuracy of a detection result.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a pre-welded current collector detection device and a battery core production system. Background Art

[0002] In the production process of soft-pack power cells, ultrasonic welding in the assembly workshop is a very important process. Pre-welding and cutting is a very important station in the welding process. Poor centering of the current collector after pre-welding will cause a series of welding problems such as main welding cracks, cold welding, inconsistent welding length of TAB sheets, and packaging abnormalities. The existing technology mostly adopts manual sampling methods. During the production process, product sampling is carried out according to the specified time of the process. The sampling time is about 2 minutes / piece, which greatly wastes manpower and affects the efficiency of the production line. In addition, the manual sampling method cannot guarantee 100% detection. Some unqualified products that are missed are easy to enter the next process, affecting the quality of the finished product. On the other hand, manual detection is inaccurate, which leads to inaccurate test results. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a pre-welded current collector detection device and a battery cell production system.

[0004] The utility model provides a pre-welded current collector detection device, comprising a position adjustment component and a detection component, wherein the position adjustment component is used to move a battery cell to be detected to a detection station, the detection component comprises an imaging component and a processing component, the imaging component is arranged corresponding to the detection station, and is used to obtain an image at the pre-welded current collector position of the battery cell to be detected, the processing component is connected to the imaging component, and is used to process the image, and determine whether the pre-welded current collector of the battery cell meets the requirements according to the image processing result.

[0005] Optionally, the position adjustment component includes a lifting assembly disposed below the inspection station, and the lifting assembly is used to lift the battery cell to be inspected on the transfer logistics line to the inspection station.

[0006] Optionally, the detection component further comprises a light source, and the light source corresponds to the pre-welded current collector of the battery cell to be detected.

[0007] Optionally, the light source is arranged on one side of the length direction of the battery cell to be inspected, the imaging component is arranged on one side of the width direction of the battery cell to be inspected, and the light source and the imaging component are both arranged on a horizontal plane where the inspection station is located.

[0008] Optionally, the pre-welded current collector detection device further comprises a background plate, the background plate is arranged opposite to the imaging assembly, and when the battery cell to be detected is located at the detection station, its pre-welded current collector is located between the background plate and the imaging assembly;

[0009] And / or, the detection component further includes a displacement component, and the displacement component is used to adjust the position of the imaging component.

[0010] Optionally, the imaging component includes two imaging parts, the processing component includes two processing parts, each of the imaging parts is electrically connected to one of the processing parts, and the two imaging parts are respectively opposite to the positions of two pre-welded current collectors on the battery cell to be inspected.

[0011] The utility model also provides a battery cell production system, comprising:

[0012] A transport logistics line for transporting cells to be tested;

[0013] In the above-mentioned pre-welded current collector detection device, the position adjustment component is used to move the battery cell to be detected on the transport stream to the detection station.

[0014] Optionally, the position adjustment component includes a lifting assembly, and an avoidance opening is provided at a position of the transfer logistics line corresponding to the lifting assembly, and the lifting assembly can pass through the avoidance opening to rise or fall in a direction perpendicular to the transfer logistics line.

[0015] Optionally, the battery cell production system also includes a transfer component, which is used to transport qualified products and unqualified products on the inspection station to corresponding production lines respectively. The transfer component includes a manipulator arranged above the inspection station, and the manipulator is arranged on the bracket of the pre-welding current collector inspection device, and the manipulator is located above the inspection station.

[0016] Optionally, the battery cell production system further includes a battery cell fixture for placing the battery cells to be tested, and the transfer logistics line is used to transport the battery cell fixture.

[0017] Optionally, the battery cell fixture comprises two clamping plates spaced apart on the transport logistics line, a space for placing the battery cell to be inspected is formed between the two clamping plates, and the two clamping plates are connected by a plurality of connecting columns.

[0018] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0019] The pre-welded current collector detection device provided by the utility model can move the battery cell to be detected to the detection station through a position adjustment component, and then obtain the image of the pre-welded current collector position of the battery cell to be detected through an imaging component, and process the image through a processing component to determine whether the pre-welded current collector meets the requirements, and then detect whether the pre-welded current collector meets the standards. The detection device adopts an automated detection method, can perform comprehensive detection on the product, avoid missed detection, ensure the quality of the finished product, and can increase the detection efficiency, while reducing labor costs. In addition, the coordination between the imaging component and the processing component can ensure the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0021] In order to more clearly illustrate the implementation mode of the utility model or the technical solution in the prior art, the drawings required for use in the implementation mode or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of the pre-welded current collector detection device in use according to the embodiment of the utility model;

[0023] Figure 2 This is a front view of the pre-welded current collector detection device in the use state according to the embodiment of the utility model;

[0024] Figure 3 It is a side view of the pre-welded current collector detection device in the use state according to the embodiment of the utility model;

[0025] Figure 4 This is a working flow chart of the battery cell production system described in the embodiment of the utility model;

[0026] Figure 5 This is a physical picture of using the pre-welded current collector detection device in the embodiment of the utility model to detect the pre-welded current collector.

[0027] Description of Reference Numerals

[0028] 1. Position adjustment component; 11. Lifting component; 2. Detection component; 21. Imaging component; 211. Imaging component; 3. Battery cell to be detected; 31. Pre-welded current collector; 4. Light source; 5. Transfer logistics line; 6. Transfer component; 61. Robot; 7. Battery cell fixture; 71. Clamp; 72. Connecting column; 8. Bracket. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0030] The following description sets forth many specific details to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the implementation methods in the specification are only part of the implementation methods of the present invention, rather than all of the implementation methods.

[0031] In order to facilitate the understanding of the embodiment of the utility model, the pre-welded current collector 31 is first explained. Pre-welded current collector 31 is a process step involved in the battery manufacturing process, mainly involving the welding operation of the current collector and the copper sheet or other materials. In battery manufacturing, the current collector is usually used to collect and transmit current and is an important component of the battery.

[0032] The process flow of pre-welding the current collector 31 generally includes the following steps: 1. Material preparation: prepare the copper sheets for the positive and negative electrodes, as well as the current collector. These materials need to meet certain quality standards, such as the copper sheet requires a smooth surface without oxides, and the current collector requires precise dimensions. 2. Cleaning: Clean the copper sheet and the current collector to remove dirt and grease on the surface to ensure the quality of welding. 3. Preheating: Preheat the copper sheet and the current collector to increase the temperature during welding, which is conducive to improving the welding quality. 4. Welding operation: Place the preheated copper sheet and the current collector in the welding equipment for welding. Common welding methods include resistance welding, laser welding or ultrasonic welding. 5. Detection and correction: After welding is completed, the welding point is inspected to check whether the welding quality is qualified. The embodiment of the utility model is precisely for the link of detecting the welding quality of the current collector after pre-welding.

[0033] The embodiment of the utility model is particularly suitable for the production of soft-pack power batteries. For welding in other fields similar to the pre-welding current collector 31 process of soft-pack power batteries, the detection device for the pre-welding current collector 31 provided by the embodiment of the utility model is also applicable, and no specific limitation is made here.

[0034] Combination Figures 1 to 3As shown, the pre-welded current collector 31 detection device provided by the embodiment of the utility model includes a position adjustment component 1 and a detection component 2. The position adjustment component 1 is used to move the battery cell 3 to be detected to the detection station. Specifically, the position adjustment component 1 moves the battery cell 3 to be detected located on the transfer logistics line 5 to the detection station and can keep the battery cell 3 to be detected at the detection station. The detection component 2 includes an imaging component 21 and a processing component. The imaging component 21 is set corresponding to the detection station. The corresponding setting here means that the imaging component 21 is set on the side of the detection station, that is, the imaging component 21 and the detection station are on the same horizontal plane, so that after the battery cell 3 to be detected moves to the detection station under the action of the position adjustment component 1, the imaging component 21 can be opposite to the position of the pre-welded current collector 31 of the battery cell 3 to be detected. The imaging component 21 is used to obtain an image at the position of the pre-welded current collector 31 of the battery cell 3 to be detected. The processing component is connected to the imaging component 21. The connection here can be a signal connection or a line connection, etc. The processing component can receive the image information obtained by the imaging component 21. The processing component is used to process the image and determine whether the pre-welded current collector 31 of the battery cell meets the requirements according to the image processing result.

[0035] Among them, the imaging component 21 is opposite to the pre-welding position of the pre-welded current collector 31 of the battery cell 3 to be inspected. Specifically, the imaging component 21 is located on the side of the position of the pre-welded current collector 31 of the battery cell 3 to be inspected, and is used to obtain the image of the side of the pre-welded current collector 31. The processing component is electrically connected to the imaging component 21, and the image of the side of the pre-welded current collector 31 is processed by the processing component, and whether the pre-welded current collector 31 of the battery cell meets the requirements is determined according to the image processing result.

[0036] The pre-welded current collector 31 detection device provided by the utility model can move the battery cell 3 to be detected to the detection station through the position adjustment component 1, and then obtain the image of the pre-welded current collector 31 position of the battery cell 3 to be detected through the imaging component 21, and process the image through the processing component to determine whether the pre-welded current collector 31 meets the requirements, and then detect whether the current collector after pre-welding is up to standard. The detection device adopts an automated detection method, which can perform comprehensive detection on the product to avoid missed detection, ensure the quality of the finished product, and increase the detection efficiency. At the same time, it reduces labor costs. In addition, the coordination between the imaging component 21 and the processing component can ensure the accuracy of the detection result.

[0037] In some embodiments, Figure 1 As shown, the position adjustment component 1 includes a lifting assembly 11 arranged below the detection station, and the lifting assembly 11 is used to lift the battery cell 3 to be detected on the transfer logistics line 5 to the detection station.

[0038] Specifically, the lifting assembly 11 is opposite to the detection station in the vertical direction, and the lifting assembly 11 is arranged below the transfer logistics line 5. The transfer logistics line 5 can move the battery cell 3 to be detected in the previous process to the bottom of the detection station. The lifting assembly 11 located below the transfer logistics line 5 can lift the battery cell 3 to be detected on the transfer logistics line 5 to the detection station and can keep the battery cell 3 to be detected at the detection station.

[0039] The position adjustment component 1 in this design has a simple structure and is easy to operate. It can also keep the battery cell 3 to be tested at the testing position, ensuring the accuracy and stability of the positioning of the battery cell 3 to be tested, so as to meet the testing requirements of the battery cell 3 to be tested.

[0040] In some embodiments, the lifting assembly 11 is a cylinder, a hydraulic cylinder or an electric push rod, and can be designed according to actual needs. It only needs to ensure that the lifting assembly 11 can lift the battery cell 3 to be inspected on the transfer logistics line 5 to the inspection station.

[0041] In some embodiments, in combination Figures 1 to 3 As shown, in order to improve the clarity of the image of the pre-welded current collector 31 acquired by the imaging component 21, the detection component 2 also includes a light source 4, and the light source 4 corresponds to the pre-welded current collector 31 of the battery cell 3 to be detected. The light source 4 is on the same horizontal plane as the detection station, and the correspondence here refers to that the light source 4 is set on one side of the pre-welded current collector 31 of the battery cell 3 to be detected, wherein the light source 4 can be set on one side of the pre-welded current collector 31 along the length direction of the battery cell 3 to be detected, and can also be set on one side of the pre-welded current collector 31 along the width direction of the battery cell 3 to be detected, and can be designed according to actual needs.

[0042] In this design, by setting the light source 4, the position of the pre-welded current collector 31 of the battery cell 3 to be inspected can be supplemented with light to ensure the imaging effect of the imaging component 21, so as to obtain a real image of the pre-welded current collector 31 and ensure the accuracy of the inspection result. Figure 5 shown.

[0043] In some embodiments, the light source 4 corresponds to the pre-welded current collector 31, and the relative position of the light source 4 and the pre-welded current collector 31 can be adjusted according to actual needs. The light source 4 can be directly opposite the pre-welded current collector 31 or at a certain angle to it. The direction of the light source 4 is adjusted according to actual needs.

[0044] In some embodiments, the light source 4 has adjustable brightness and color temperature.

[0045] Exemplarily, by adopting a light source 4 with adjustable brightness and color temperature to adapt to the surface reflection characteristics and detection requirements of the pre-welded current collector 31 in different scenes and different battery cells 3 to be inspected, the clarity of the image of the pre-welded current collector 31 obtained by the imaging component 21 is further improved.

[0046] In some embodiments, the imaging assembly 21 further includes a calibration module for calibrating the imaging mechanism before detection.

[0047] Exemplarily, a calibration module is provided to calibrate the imaging mechanism before detection. The specific calibration method can be implemented by existing technical means, and the embodiment of the utility model does not make any specific limitation.

[0048] The utility model can ensure that the imaging component 21 can accurately identify and measure information such as the size, shape and position of the target object by adding a calibration module, thereby improving the measurement accuracy and stability of the system.

[0049] In some embodiments, the light source 4 is arranged on one side of the length direction of the battery cell 3 to be inspected, and the imaging component 21 is arranged on one side of the width direction of the battery cell 3 to be inspected, so that the setting direction of the light source 4 is perpendicular to the setting direction of the battery cell 3 to be inspected, and the light source 4 and the imaging component 21 are both arranged on the horizontal plane where the inspection station is located.

[0050] In the non-detection state, the battery cell 3 to be detected is located on the transfer logistics line 5, and the light source 4 and the imaging component 21 are located above the transfer logistics line 5 to avoid affecting the transfer and transportation of the battery cell 3 to be detected.

[0051] During inspection, the battery cell 3 to be inspected is moved to the bottom of the inspection station and lifted to the inspection station by the lifting assembly 11. At this time, the light source 4, the imaging assembly 21 and the battery cell 3 to be inspected are all located on the same horizontal plane, and then the light source 4 is used to fill in the light for the position of the pre-welded current collector 31 of the battery cell 3 to be inspected, and the image information of the position of the pre-welded current collector 31 is obtained by the imaging assembly 21.

[0052] This design ensures normal transportation of the battery cells 3 to be inspected and detection of the welding degree, and the light source 4 and the imaging assembly 21 surround the periphery of the inspection station, making the overall structure more compact and reducing space occupancy.

[0053] In some embodiments, the pre-welded current collector detection device further includes a background plate, which is arranged opposite to the imaging component 21 . When the battery cell 3 to be detected is located at the detection station, its pre-welded current collector 31 is located between the background plate and the imaging component 21 .

[0054] Under this design, an imaging component 21 is provided on one side of the pre-welded current collector 31 of the battery cell 3 to be inspected, and a background plate is provided on the other side of the pre-welded current collector 31 of the battery cell 3 to be inspected, so as to increase the imaging effect at the position of the pre-welded current collector 31 and ensure that the subsequent processing and analysis results are more accurate.

[0055] In some embodiments, the detection component 2 further includes a displacement component, and the displacement component is used to adjust the position of the imaging component 21.

[0056] In this design, the position of the imaging component 21 can be adjusted by setting a displacement component to change the distance between the imaging component 21 and the pre-welded current collector 31, so that during the detection process, the distance between the imaging component 21 and the pre-welded current collector 31 can be automatically adjusted to obtain images at different focal lengths.

[0057] In some embodiments, the displacement component is disposed below the imaging component 21, and the displacement component is disposed on the bracket 8 of the pre-welded current collector detection device, wherein the displacement component can be a linear motor, an electric push rod, etc., which can be selected according to actual needs. Optionally, the component includes a driving member, a slide rail, a screw rod, and a slider, the screw rod is rotated along its length direction and disposed in the slide rail, the slider and the screw rod thread cooperate, the driving member can drive the screw rod to rotate, and then drive the slider to rotate, the imaging component 21 is disposed on the slider, and then the imaging component 21 can be driven by the slider to move in the direction close to or away from the pre-welded current collector 31.

[0058] Under this design, the imaging component 21 can be supported on one side of the battery cell 3 to be inspected at the inspection station through the displacement component, and the imaging component 21 can be driven by the driving member to move in a direction close to or away from the pre-welded current collector 31, thereby increasing the convenience and accuracy of position adjustment and ensuring that the target image can be obtained.

[0059] In some embodiments, the detection component 2 further includes a data recording component for recording the image of the pre-welded current collector 31 obtained each time and the image processing result.

[0060] Under this design, if the next process product has an abnormal situation, it can be traced based on the image information to check whether the unqualified product was missed by this process. If the unqualified product is missed in this process, it can be analyzed and rectified; if the product detected in this process is good, the cause of the abnormality can be traced to the next process for rectification, which is very helpful for abnormal analysis and saves analysis time. It is convenient for subsequent quality tracing and data analysis.

[0061] In some embodiments, the detection component 2 also includes an alarm component, which includes an alarm for issuing an alarm prompt when the pre-welded collector 31 determined by the processing component does not meet the requirements, so that on-site staff can find unqualified products in time and can choose to manually remove unqualified products to avoid them flowing into the next process.

[0062] Furthermore, the alarm component also includes a display screen, which is used to display the specific location of the unqualified pre-welded current collector 31 and the reason for the unqualified state, so as to facilitate subsequent analysis and provide an important basis for improving product technology.

[0063] In some embodiments, the imaging component 21 includes two imaging elements 211, and the processing component includes two processing elements. Each imaging element 211 is electrically connected to a processing element, and the two imaging elements 211 are respectively opposite to the positions of two pre-welded current collectors 31 on the battery cell 3 to be inspected.

[0064] In this design, the image information of the pre-welded current collectors 31 on both sides of the battery cell 3 to be inspected is obtained respectively through two imaging elements 211, so as to inspect the two pre-welded current collectors separately and ensure the accuracy of the inspection effect. At the same time, it can be intuitively determined at which end of the battery cell 3 to be inspected the unqualified pre-welded current collector 31 is located, which is convenient for subsequent processing.

[0065] Taking any one of the imaging elements 211 as an example, the image acquired by the imaging element 211 is sent to the processing element, which may be a processor, a host computer or a PLC control device, etc. The acquired image is sent to the processing element, and then the acquired image can be processed according to existing technical means such as AI algorithms to obtain the length of the upper and lower edges of the pre-welded current collector 31 protruding relative to each pole piece, and the welding conditions between each pole piece (for example, whether there are welding cracks between each pole piece, whether there are wrinkles on the pole piece, and whether there are cold welds between each pole piece, etc.) and other image processing results.

[0066] For example, when the obtained image processing result determines that one of the lengths of the upper and lower edges of the pre-welded current collector 31 does not meet the set size requirements, or one of the pole pieces has wrinkles, or there are any defects such as loose welding and cold welding between the pole pieces, it can be determined that the pre-welded current collector 31 of the battery cell does not meet the requirements. The detection device will detect each pre-welded current collector to determine which one meets the requirements and which one does not, avoiding the problem of missed detection during manual sampling, thereby improving the accuracy of detection and production efficiency.

[0067] In some embodiments, the imaging element 211 may be a camera, specifically a CCD camera. The CCD camera is a conventional component in the imaging field, and its structure and working principle are not described in detail herein.

[0068] In some embodiments, the detection device further includes a bracket 8, so that the position adjustment component 1 and / or the detection component 2 can be placed at a specified position through the bracket 8 to meet usage requirements.

[0069] Combination Figures 1 to 4 As shown, the utility model also provides a battery cell production system, including a transfer flow line 5 for conveying the battery cell 3 to be inspected and the above-mentioned pre-welded collector 31 detection device. Specifically, the transfer flow line 5 is used to convey the battery cell 3 to be inspected to the bottom of the detection station, and the position adjustment component 1 is used to move the battery cell 3 to be inspected on the transfer flow to the detection station.

[0070] The battery cell production system provided in the present application can transport the battery cells of the previous process to the bottom of the inspection station through the transfer logistics line 5, and then move the battery cells 3 to be inspected to the inspection station through the position adjustment component 1 to realize automated inspection, reduce labor costs, and increase inspection efficiency.

[0071] In some embodiments, the position adjustment member 1 includes a lifting assembly 11, and a clearance is provided at a position of the transfer logistics line 5 corresponding to the lifting assembly 11, and the lifting assembly 11 can pass through the clearance to rise or fall in a direction perpendicular to the transfer logistics line 5. The lifting assembly 11 has been described above and will not be described in detail here. The clearance on the transfer logistics line 5 facilitates the lifting assembly 11 to realize the lifting function and makes the overall structure more compact.

[0072] In some embodiments, the position adjustment member 1 includes a lifting assembly 11, which is disposed between two conveying lines of the transfer logistics line 5, so that the lifting assembly 11 can pass through the gap between the two conveying lines of the transfer logistics line 5 to ensure the conveying effect of the battery cell 3 to be tested.

[0073] In some embodiments, the battery cell production system further includes a transfer component 6, which is used to transport qualified products and unqualified products on the inspection station to corresponding production lines respectively.

[0074] Under this design, qualified products and unqualified products on the inspection station can be moved to the next process through the transfer component 6, thereby reducing labor costs and increasing work efficiency.

[0075] In some embodiments, the transfer assembly 6 includes a manipulator 61 disposed above the detection station, the manipulator 61 is disposed on the bracket 8 of the pre-welded current collector detection device, and the manipulator 61 is located above the detection station. The control device controls the manipulator 61 to sort the battery cells that meet the requirements into the qualified product area and the battery cells that do not meet the requirements into the defective product area according to the image processing result of the detection component 2, thereby improving production efficiency.

[0076] In this design, the manipulator 61 is arranged above the detection station, so that the manipulator, light source, imaging component, light source 4 and imaging component 21 surround the periphery of the detection station, making the overall structure more compact and reducing space occupancy.

[0077] In some embodiments, in combination Figures 1 to 3 As shown, the battery cell production system also includes a battery cell fixture 7 for placing the battery cells 3 to be tested, and the transfer logistics line 5 is used to transport the battery cell fixture 7.

[0078] The battery cell clamp 7 can be provided to fix the battery cell 3 to be tested, so as to facilitate the movement and fixation of the position of the battery cell 3 to be tested.

[0079] In some embodiments, the cell fixture 7 includes two clamping plates 71 spaced apart on the transporter flow line 5, a space for placing the cell 3 to be tested is formed between the two clamping plates 71, and the two clamping plates 71 are connected by a plurality of connecting posts 72. The clamping plate 71 extends out of the position of the pre-welded current collector 31 of the cell 3 to be tested clamped between the two clamping plates 71 to ensure the imaging effect of the pre-welded current collector 31.

[0080] In this design, the battery cell 3 to be tested can be clamped between the two clamping plates 71 to ensure the fixing effect of the battery cell.

[0081] In some embodiments, a spring is provided on the connecting column 72 to apply a force to one of the clamping plates 71 toward the other clamping plate 71 through the spring, so as to ensure that the clamping plate 71 can clamp the battery cell 3 to be tested.

[0082] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0083] The above description is only a specific embodiment of the utility model, so that those skilled in the art can understand or implement the utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments described herein, but should conform to the widest scope consistent with the principles and novel features of the utility model described herein.

Claims

1. A pre-welded current collector detection device, characterized in that: The invention comprises a position adjustment component (1) and a detection component (2), wherein the position adjustment component (1) is used to move a battery cell (3) to be detected to a detection station, and the detection component (2) comprises an imaging component (21) and a processing component, wherein the imaging component (21) is arranged corresponding to the detection station and is used to obtain an image at the position of a pre-welded current collector (31) of the battery cell (3) to be detected, and the processing component is connected to the imaging component (21) and is used to process the image and determine whether the pre-welded current collector (31) of the battery cell meets the requirements according to the image processing result.

2. The pre-welded current collector detection device according to claim 1, characterized in that: The position adjustment component (1) comprises a lifting assembly (11) arranged below the detection station, and the lifting assembly (11) is used to lift the battery cell (3) to be detected on the transfer logistics line (5) to the detection station.

3. The pre-welded current collector detection device according to claim 1, characterized in that: The detection component (2) further comprises a light source (4), wherein the light source (4) corresponds to the pre-welded current collector (31) of the battery cell (3) to be detected.

4. The pre-welded current collector detection device according to claim 3, characterized in that: The light source (4) is arranged on one side of the length direction of the battery cell (3) to be detected, the imaging component (21) is arranged on one side of the width direction of the battery cell (3) to be detected, and the light source (4) and the imaging component (21) are both arranged on a horizontal plane where the detection station is located.

5. The pre-welded current collector detection device according to claim 1, characterized in that: The pre-welded current collector detection device further comprises a background plate, the background plate being arranged opposite to the imaging assembly (21), and when the battery cell (3) to be detected is located at the detection station, the pre-welded current collector (31) is located between the background plate and the imaging assembly (21); And / or, the detection component (2) further comprises a displacement component, wherein the displacement component is used to adjust the position of the imaging component (21).

6. The pre-welded current collector detection device according to claim 1, characterized in that: The imaging component (21) comprises two imaging elements (211), the processing component comprises two processing elements, each of the imaging elements (211) is electrically connected to one of the processing elements, and the two imaging elements (211) are respectively opposite to the positions of two pre-welded current collectors (31) on the battery cell (3) to be inspected.

7. A battery cell production system, characterized in that: include: A transport logistics line (5) for transporting the battery cells (3) to be tested; According to the pre-welded current collector detection device as described in any one of claims 1 to 6, the position adjustment component (1) is used to move the battery cell (3) to be detected on the transport flow to the detection station.

8. The battery cell production system according to claim 7, characterized in that: The position adjustment component (1) comprises a lifting component (11), and a clearance opening is provided at a position of the transfer logistics line (5) corresponding to the lifting component (11), and the lifting component (11) can pass through the clearance opening to rise or fall in a direction perpendicular to the transfer logistics line (5).

9. The battery cell production system according to claim 7, characterized in that: The battery cell production system further comprises a transfer assembly (6), the transfer assembly (6) being used to transport qualified products and unqualified products on the inspection station to corresponding production lines respectively, the transfer assembly (6) comprising a manipulator (61) arranged above the inspection station, the manipulator (61) being arranged on a bracket (8) of the pre-welded current collector inspection device, and the manipulator (61) being located above the inspection station; The battery cell production system further comprises a battery cell fixture (7) for placing the battery cell (3) to be tested, and the transfer flow line (5) is used to transport the battery cell fixture (7).

10. The battery cell production system according to claim 9, characterized in that: The battery cell clamp (7) comprises two clamping plates (71) arranged at intervals on the transport flow line (5), a space for placing the battery cell (3) to be tested is formed between the two clamping plates (71), and the two clamping plates (71) are connected by a plurality of connecting columns (72).

Images