Battery cell appearance detection equipment and method

Abstract

The invention discloses battery cell appearance detection equipment and method, and relates to the technical field of battery cell production. The battery cell appearance detection equipment comprises a base frame, a conveying mechanism, a tab shaping mechanism, a surface detection mechanism and a side surface detection mechanism, wherein the tab shaping mechanism is used for performing tab shaping on a battery cell positioned on a shaping station; the surface detection mechanism comprises a front surface detection mechanism and a back surface detection mechanism. According to the battery cell appearance detection equipment, the tab of the battery cell can be shaped through the tab shaping mechanism, the appearances of the front surface and the back surface of the battery cell can be detected through the surface detection mechanism, and the appearances of the side surfaces of the battery cell can be detected through the side surface detection mechanism, so that the integration level of the battery cell appearance detection equipment is improved; and the fluency among all the technological processes is improved, and then the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell production, and in particular to a battery cell appearance detection device and method. Background Art

[0002] With the rapid development of the new energy industry and the continuous advancement of battery technology, the surface defect detection technology of battery cells is also developing. Battery cell surface defects refer to various undesirable phenomena or flaws that appear on the surface of the battery cell during the manufacturing or use of the battery cell. Battery cell surface defects not only affect the appearance quality of the battery cell, but may also have a negative impact on the performance and safety of the battery cell.

[0003] In the existing battery cell appearance inspection technology, it is necessary to shape the pole lugs separately and inspect the front, back and side appearance of the battery cell. The process flow is cumbersome and complicated, and the mechanism integration is low, and the efficiency of battery cell appearance inspection is not high. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a battery appearance inspection device that can inspect the front and back sides of the battery without turning it over, with high integration and high inspection efficiency.

[0005] The invention also provides a method for detecting the appearance of a battery cell.

[0006] A first aspect of the present invention provides a battery cell appearance inspection device, comprising:

[0007] Base frame,

[0008] A conveying mechanism is arranged on the base frame; a shaping station, a side inspection station and a surface inspection station are arranged on the conveying mechanism;

[0009] A tab shaping mechanism is arranged on the base frame; the tab shaping mechanism is used to shape the tabs of the battery cells located at the shaping station;

[0010] A surface detection mechanism is arranged on the base frame and is used to detect the surface of the battery cell on the surface detection station; the surface detection station includes a front detection station and a back detection station, and the surface detection mechanism includes a front detection mechanism and a back detection mechanism; the front detection mechanism detects the front of the battery cell located on the front detection station from the upper side of the front detection station, and the back detection mechanism detects the back of the battery cell located on the back detection station from the lower side of the back detection station;

[0011] A side detection mechanism is arranged on the base frame; the side detection mechanism is used to detect the side of the battery cell located at the side detection station.

[0012] The surface detection mechanism and the side detection mechanism can detect the appearance of the battery cell and obtain the real-time status of the battery cell in time, avoid unqualified battery cells from entering the subsequent processing links, and improve the yield rate; the front detection mechanism detects the front of the battery cell from the upper side of the front detection station, and the back detection mechanism detects the back of the battery cell from the lower side of the back detection station. The front and back sides of the battery cell can be inspected without turning the battery cell over, thereby reducing the defective rate of the product, saving equipment costs, and improving production efficiency; the pole ear of the battery cell can be shaped by the pole ear shaping mechanism, the appearance of the front and back sides of the battery cell can be inspected by the surface detection mechanism, and the appearance of the side of the battery cell can be inspected by the side detection mechanism, thereby improving the integration of the battery cell appearance detection equipment, improving the fluency between various process flows, and thus improving production efficiency.

[0013] In some embodiments of the present invention, the conveying mechanism further includes a transfer assembly, the transfer assembly includes a moving arm, and the moving arm is used to transfer the battery cell to a reverse side inspection station; the battery cell is fixed to the bottom of the moving arm.

[0014] In some embodiments of the present invention, the surface detection mechanism includes a second support base, a surface detector and an adjustment component, and the surface detector and the adjustment component are installed on the second support base; the surface detector is used to detect the appearance of the battery cell located on the surface detection station, and the adjustment component is used to adjust the distance between the surface detector and the surface detection station.

[0015] In some embodiments of the present invention, the adjustment assembly includes an adjuster and a second bracket, the second bracket is fixed on the second support seat; a second guide rail is arranged on the second bracket, and the second guide rail is arranged along the direction from the surface detection mechanism to the surface detection station; under the action of the adjuster, the detector slides on the second guide rail, so that the detector approaches or moves away from the surface detection station.

[0016] In some embodiments of the present invention, the surface detector includes a first detector and a second detector, the first detector is used to obtain an image of the main surface of the battery cell located at the surface detection station, and the second detector is used to obtain an image of the pole ear of the battery cell located at the surface detection station; the adjustment assembly includes a support member, the support member connects the first detector and the second detector, and the support member is slidably set on the second guide rail.

[0017] In some embodiments of the present invention, the side detection mechanism includes a third detector, which is used to obtain an image of the side of the battery cell located at the side detection station; the third detector includes a main detector and a sub-detector, and the main detector and the sub-detector are arranged along the thickness direction of the battery cell located at the side detection station.

[0018] In some embodiments of the present invention, the conveying mechanism includes a fixture, which includes a base, a driving part and a carrying part, the driving part is fixed to the base, the driving part of the driving part is connected to the carrying part, and the carrying part is used to carry the battery cell; under the drive of the driving part, the carrying part rotates, so that the battery cell located on the carrying part rotates around itself along the direction of a first axis, and the first axis is an axis extending along the thickness direction of the battery cell.

[0019] In some embodiments of the present invention, the appearance inspection equipment also includes a third support base and a side driving member, the third support base is fixed on the base, and the side detection mechanism is installed on the third support base; under the drive of the side driving member, the side detection mechanism moves relative to the third support base, so that the side detection mechanism is close to or away from the side detection station.

[0020] In some embodiments of the present invention, the side detection mechanism further includes an arch light source and a UV light source, and the arch light source and the UV light source are arranged toward the side detection station.

[0021] In some embodiments of the present invention, the appearance inspection equipment also includes a first support seat and a shaping drive component, the first support seat is fixed on the base frame, and the pole ear shaping mechanism is installed on the first support seat; under the drive of the shaping drive component, the pole ear shaping mechanism moves relative to the first support seat, so that the pole ear shaping mechanism is close to or away from the shaping station.

[0022] A second aspect of the present invention provides a method for inspecting the appearance of a battery cell, based on the appearance inspection device described in any one of the embodiments of the first aspect, including:

[0023] The conveying mechanism transfers the battery cell to the shaping station, and the tab shaping mechanism performs tab shaping on the battery cell located at the shaping station;

[0024] The conveying mechanism transfers the battery cell after the tab shaping to the front inspection station, and the front inspection mechanism inspects the front of the battery cell located on the front inspection station from the upper side of the front inspection station;

[0025] The conveying mechanism transfers the battery cell after being inspected by the front inspection mechanism to the side inspection station, and the side inspection mechanism inspects the side of the battery cell located at the side inspection station;

[0026] The conveying mechanism transfers the battery cell after being inspected by the side inspection mechanism to the back side inspection station, and the back side inspection mechanism inspects the back side of the battery cell located on the back side inspection station from the lower side of the back side inspection station. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the structure of a battery cell appearance inspection device provided according to an embodiment of the present invention;

[0028] Figure 2 2 is a schematic structural diagram of a tab shaping mechanism of a battery cell appearance inspection device provided in accordance with an embodiment of the present invention;

[0029] Figure 3 It is a schematic diagram of the coordination relationship among the transfer assembly, the reverse side detection mechanism and the turntable of the battery cell appearance detection device provided in accordance with an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of the coordination relationship between the front detection mechanism and the turntable of the battery cell appearance detection device provided in accordance with an embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of the coordination relationship between the side detection mechanism and the turntable of the battery cell appearance detection device provided in accordance with an embodiment of the present invention;

[0032] Figure 6 is a schematic diagram of the matching relationship between the side detection mechanism and the third support seat of the battery cell appearance detection device provided in accordance with an embodiment of the present invention;

[0033] Figure 7 is a schematic diagram of the matching relationship between the side detection mechanism and the third support seat of the battery cell appearance detection device provided in an embodiment of the present invention at another angle;

[0034] Figure 8 yes Figure 4 A magnified view of the structure at center A;

[0035] Fig. 9 It is a schematic diagram of the matching relationship between the tab shaping mechanism and the first supporting seat of the battery cell appearance inspection device provided in accordance with an embodiment of the present invention;

[0036] Fig.10 It is a schematic diagram of the coordination relationship between the tab shaping mechanism and the rotating disk of the battery cell appearance inspection device provided in accordance with an embodiment of the present invention;

[0037] Fig.11It is a schematic diagram of the structure of the battery cell;

[0038] Fig.12 4 is a flow chart of a method for detecting the appearance of a battery cell provided according to an embodiment of the present invention.

[0039] Reference numerals:

[0040] 100, first support seat; 110, first guide rail; 200, tab shaping mechanism; 210, first pressing block; 220, second pressing block; 230, support frame; 240, first flattening drive member; 300, transmission mechanism; 310, turntable; 320, conveyor; 330, fixture; 331, base; 332, drive unit; 333, bearing unit; 340, transfer assembly; 341, moving arm; 342, cross frame; 400, surface detection mechanism; 410, surface detector; 411, first detector; 412, second detector; 420, light shielding housing; 430, second support seat; 44 0. Adjustment component; 441. Regulator; 442. Second bracket; 450. Front detection mechanism; 460. Back detection mechanism; 500. Third support seat; 610. Surface detection station; 611. Front detection station; 612. Back detection station; 620. Shaping station; 630. Side detection station; 700. Battery cell; 710. Tab; 720. Front; 730. Back; 800. Side detection mechanism; 810. Third detector; 811. Main detector; 812. Auxiliary detector; 813. Arched light source; 814. UV light source; 815. Fixing plate; B. First axis. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it is to be understood that a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] like Figure 1 to Figure 2 As shown, the first embodiment of the present invention provides a battery cell appearance inspection device, which includes a base frame, a conveying mechanism 300, a tab shaping mechanism 200, a surface inspection mechanism 400 and a side inspection mechanism 800, wherein the conveying mechanism 300 is arranged on the base frame; a shaping station 620, a side inspection station 630 and a surface inspection station 610 are arranged on the conveying mechanism 300; the tab shaping mechanism 200, the surface inspection mechanism 400 and the side inspection mechanism 800 are all arranged on the base frame; the tab shaping mechanism 200 is used to shape the tab of the battery cell 700 located on the shaping station 620; the surface inspection station 610 includes a front inspection station 610. 1 and a back side inspection station 612, the surface inspection mechanism 400 is used to inspect the surface of the battery cell 700 on the surface inspection station 610, and the surface inspection mechanism 400 includes a front side inspection mechanism 450 and a back side inspection mechanism 460; the front side inspection mechanism 450 inspects the front side 720 of the battery cell 700 located on the front side inspection station 611 from the upper side of the front side inspection station 611, and the back side inspection mechanism 460 inspects the back side 730 of the battery cell 700 located on the back side inspection station 612 from the lower side of the back side inspection station 612, and the side inspection mechanism 800 is used to inspect the side of the battery cell 700 located on the side inspection station 630.

[0045] The surface detection mechanism 400 and the side detection mechanism 800 can detect the appearance of the battery cell 700, so as to obtain the real-time status of the battery cell 700 in time, avoid unqualified battery cells 700 from entering the subsequent processing links, and improve the yield rate; the front detection mechanism 450 detects the front side 720 of the battery cell 700 from the upper side of the front detection station 611, and the back detection mechanism 460 detects the back side 730 of the battery cell 700 from the lower side of the back detection station 612. Without turning the battery cell 700 over, the battery cell 700 can be inspected. The front side 720 and the back side 730 of the battery cell 700 can be inspected, thereby reducing the defective rate of the product, saving equipment cost and improving production efficiency; the pole ear 710 of the battery cell 700 can be shaped by the pole ear shaping mechanism 200, the appearance of the front side 720 and the back side 730 of the battery cell 700 can be inspected by the surface inspection mechanism 400, and the appearance of the side of the battery cell 700 can be inspected by the side inspection mechanism 800, thereby improving the integration of the battery cell appearance inspection equipment, improving the fluency between the various process flows, and thus improving production efficiency.

[0046] The embodiment of the present invention uses the lug shaping mechanism 200, the front detection mechanism 450, the back detection mechanism 460 and the side detection mechanism 800 to concentrate multiple processes such as lug shaping, front detection, back detection and side detection of the battery cell 700 on one device, thereby improving the integration of the battery cell appearance detection equipment and effectively avoiding the problem of multiple machines occupying a large amount of space. The high integration makes it possible to merge multiple process flows into one system, reducing the time and operation process of switching between different devices, helping to achieve the continuity of the process flow, and making the production process smoother and more efficient. In addition, a higher integration level is more conducive to realizing automated control and intelligent adjustment functions, which can adjust production parameters in real time and has a high response speed, thereby improving the efficiency of the entire process flow; for example, the battery cell appearance detection equipment includes a control system, which is used to control the actions of each mechanism, real-time data collection, processing and analysis, etc.

[0047] The front detection mechanism 450 detects the front side 720 of the battery cell 700 from the upper side of the front detection station 611, and the back detection mechanism 460 detects the back side 730 of the battery cell 700 from the lower side of the back detection station 612. Without turning over the battery cell 700, different main surfaces of the battery cell 700 can be detected by different detection mechanisms. The embodiment of the present invention includes the front detection mechanism 450 and the back detection mechanism 460. On the one hand, the plurality of detection mechanisms can improve the detection efficiency of the battery cell 700. On the other hand, the front detection mechanism 450 can be used to detect the back side of the battery cell 700. The back side detection mechanism 460 detects different surfaces of the battery cell 700 from different directions of the battery cell 700, which can minimize the movement of the detection mechanism, reduce the steps of the production process, and improve production efficiency; that is, when performing back side detection on the battery cell 700, it is only necessary to transfer the battery cell 700 to the back side detection station 612, and detect the back side 730 of the battery cell 700 through the back side detection mechanism 460. There is no need to move the back side detection mechanism 460, which is conducive to keeping the relative position between the back side detection mechanism 460 and the back side detection station 612 unchanged to ensure the accuracy of the detection.

[0048] The main surface of the battery cell 700 includes a front side 720 and a back side 730. When the battery cell appearance inspection equipment in the related art inspects the front side 720 and the back side 730 of the battery cell 700, it is necessary to turn the battery cell 700 over, which adds additional mechanical devices and production time costs. If the turning operation is improper, the outer shell or internal structure of the battery cell 700 may be mechanically damaged, causing scratches, indentations or local damage on the surface of the battery cell 700, thereby affecting the performance and life of the battery, and even causing a short circuit or battery failure. The present invention inspects the appearance of the front side 720 and the back side 730 of the battery cell 700 respectively through the front detection mechanism 450 and the back detection mechanism 460, thereby reducing the steps of turning over the battery cell 700, thereby simplifying the production process to avoid damage to the battery cell 700 caused by the turning step.

[0049] In some embodiments, see Figure 3The conveying mechanism 300 also includes a transfer component 340, and the transfer component 340 includes a moving arm 341. The moving arm 341 is used to transfer the battery cell 700 to the reverse detection station 612. The battery cell 700 is fixed to the bottom of the moving arm 341, so that the reverse detection mechanism 460 can perform an appearance inspection on the reverse side 730 of the battery cell 700; the transfer component 340 also includes a cross frame 342 and a driving component. The moving arm 341 is slidably arranged on the cross frame 342. Under the drive of the driving component, the moving arm 341 slides on the cross frame 342 to drive the battery cell 700 to be transferred to the reverse detection station 612; a suction cup is arranged at the bottom of the moving arm 341, and the suction cup absorbs the battery cell 700, so that the battery cell 700 is fixed to the bottom of the moving arm 341, and the reverse side 730 of the battery cell 700 can be inspected without turning the battery cell 700 over. The battery cell 700 is fixed to the bottom of the moving arm 341 so that the back side 730 of the battery cell 700 is exposed. Without turning the battery cell 700 over, the back side detection mechanism 460 detects the back side 730 of the battery cell 700 from the bottom side of the back side detection station 612. Generally, the driving components are a screw and a motor.

[0050] See also Figure 4 The conveying mechanism 300 includes a driving motor, a turntable 310, a plurality of conveyors 320 disposed on the turntable 310, and a fixing device 330 disposed on the conveyors 320. An air cushion guide rail is disposed inside the turntable 310, and a plurality of conveyors 320 are slidably disposed on the air cushion guide rail. The driving motor is fixed on the turntable 310, and an output shaft of the driving motor is connected to the conveyors 320 to drive the conveyors 320 to rotate relative to the turntable 310 ( Figure 4 The c direction in the figure is the rotation direction of the conveyor 320); the shaping station 620, the front inspection station 611 and the side inspection station 630 are arranged on the peripheral side of the turntable 310, and the fixture 330 is used to carry the battery cell 700; the driving motor is working, and the conveyor 320 rotates, thereby driving the fixture 330 to move between the shaping station 620 and the surface inspection station 610, thereby transferring the battery cell 700 between the shaping station 620, the front inspection station 611 and the side inspection station 630; the transfer component 340 transfers the battery cell 700 from the side inspection station 630 to the back inspection station 612; generally, the number of conveyors 320 is greater than or equal to the number of stations, so that each mechanism can work simultaneously; a control box is also provided inside the turntable 310, and the control box is used to accurately adjust the speed, position and torque of the drive motor to achieve high-precision motion control. In other embodiments, the conveying mechanism 300 may be other conveying equipment such as a conveyor belt in the prior art, and the embodiment of the present invention is not particularly limited to this.

[0051] In some embodiments, along the conveying direction of the conveying mechanism 300, the surface inspection station 610 is located in front of the shaping station 620. After the surface inspection mechanism 400 inspects the appearance of the battery cell 700 located at the surface inspection station 610, the conveying mechanism 300 transfers the battery cell 700 to the shaping station 620. The battery cell appearance inspection equipment can shape the tab 710 of the battery cell 700 according to the inspection result of the surface inspection mechanism 400.

[0052] In some embodiments, along the conveying direction of the conveying mechanism 300, the surface inspection station 610 is located behind the shaping station 620; after the battery cell 700 located on the surface inspection station 610 is shaped by the battery cell appearance inspection equipment, the conveying mechanism 300 transfers the battery cell 700 from the shaping station 620 to the surface inspection station 610, and the surface inspection mechanism 400 can inspect the appearance of the shaped battery cell 700 to prevent unqualified battery cells 700 from entering subsequent processing links, thereby improving the yield rate.

[0053] In some embodiments, two surface inspection stations 610 are provided, and surface inspection stations 610 are provided in front of and behind the shaping station 620 along the conveying direction of the conveying mechanism 300. Before and after shaping the tabs 710 of the battery cell 700, the surface of the battery cell 700 is inspected, and the tabs 710 of the battery cell 700 can be shaped according to the inspection structure before shaping, and the battery cell 700 after shaping can also be inspected to prevent unqualified battery cells 700 from entering the subsequent processing links and improve the yield rate.

[0054] In some embodiments, see Figure 5The conveying mechanism 300 includes a fixture 330, and the fixture 330 includes a base 331, a driving part 332 and a bearing part 333. The driving part 332 is fixed to the base 331, and the driving part of the driving part 332 is connected to the bearing part 333. The bearing part 333 is used to bear the battery cell 700; under the drive of the driving part 332, the bearing part 333 rotates, so that the battery cell 700 located on the bearing part 333 rotates around itself along the direction of the first axis B, and the first axis B is an axis extending along the thickness direction of the battery cell 700; when the battery cell 700 is located at the side detection station 630, the driving part 332 can drive the battery cell 700 to rotate, so that different sides of the battery cell 700 face the side detection mechanism 800, thereby realizing that the side detection mechanism 800 detects different sides of the battery cell 700; for example, the battery cell 700 has a first side, a second side, a third side and a fourth side, and the first side of the battery cell 700 located at the side detection station 630 faces the side The detection mechanism 800, after the side detection mechanism 800 detects the first side, the driving part 332 works to drive the battery cell 700 to rotate around its own center line, so that the second side faces the side detection mechanism 800, and this is repeated, so that one side detection mechanism 800 can detect the four sides of the battery cell 700; the embodiment of the present invention can drive the battery cell 700 to rotate through the structure of the fixture 330 itself, and can drive the battery cell 700 to rotate quickly and efficiently; the first axis B can be the center line of the battery cell 700. Since the battery cell 700 rotates around its own center line, the distance between the center position of the battery cell 700 and the side detection mechanism 800 remains unchanged during multiple rotations, which is more conducive to determining the position of the battery cell 700; generally, the driving part 332 is a motor, and the bearing part 333 is a plate; the base 331 can be a fixed shell for accommodating the motor; the fixture 330 can also include a worm gear and a worm, and the rotation speed can be adjusted by the cooperation of the worm gear and the worm. A suction cup can be provided on the bearing portion 333, and the suction cup is used to adsorb the battery cell 700. The battery cell 700 is adsorbed by the negative pressure principle, and the battery cell 700 is fixed without causing damage to the surface of the battery cell 700. At the same time, the suction cup fixes the battery cell 700 with the characteristics of rapid adsorption and release. By changing the suction force or cutting off the suction force, the battery cell 700 can be quickly adsorbed or placed, which significantly improves production efficiency.

[0055] Since different sides of the battery cell 700 have different lengths, when the battery cell 700 rotates along itself, different sides of the battery cell 700 are at different distances from the side detection mechanism 800, which affects the detection effect.

[0056] In some embodiments, see Figure 6The appearance inspection equipment also includes a third support base 500 and a side driving member. The third support base 500 is fixed on the base frame, and the side inspection mechanism 800 is installed on the third support base 500. Driven by the side driving member, the side inspection mechanism 800 moves relative to the third support base 500, so that the side inspection mechanism 800 approaches or moves away from the side inspection station 630.

[0057] The battery cell 700 is located on the side detection station 630. The battery cell 700 rotates so that different sides face the side detection mechanism 800. The side detection mechanism 800 is driven by the side driving member to move relative to the third support seat 500, so that the side detection mechanism 800 is close to or away from the side detection station 630, thereby adjusting the positional relationship between the side detection mechanism 800 and the side detection station 630, that is, adjusting the distance between the third detector 810 and the side of the battery cell 700 to accommodate the detection of different sides of the battery cell 700.

[0058] When the model of the battery cell 700 is replaced, since the sizes of battery cells 700 of different models are different, the side detection mechanism 800 can be driven by the side driving member to move relative to the third support seat 500 to adapt to different models of battery cells 700; if the size of the battery cell 700 is large, the side detection mechanism 800 is moved away from the side detection station 630 by the side driving member, so that the third detector 810 can capture the entire side of the battery cell 700, which can ensure that the side of the battery cell 700 is located in the image, so as to detect the side of the battery cell 700; if the size of the battery cell 700 is small, the third detector 810 is moved close to the side detection station 630 by the side driving member, so that the battery cell 700 can be clearly displayed in the image captured by the third detector 810, so as to detect the side of the battery cell 700.

[0059] Compared with the front side 720 and the back side 730 of the battery cell 700, the surface area of ​​the side of the battery cell 700 is smaller, which increases the difficulty of accurately detecting the side. In addition, since the battery cell 700 may be affected by various forces during the production process, causing the shape to change, such as bending upward or downward, the detection effect is poor.

[0060] In some embodiments, see Figure 6 to Figure 7The side detection mechanism 800 includes a third detector 810, which is used to obtain an image of the side of the battery cell 700 located on the side detection station 630, so as to detect the side of the battery cell 700; the third detector 810 includes a main detector 811 and a sub-detector 812, and the main detector 811 and the sub-detector 812 are arranged along the thickness direction of the battery cell 700 located on the side detection station 630 to obtain an image of a larger angle range of the battery cell 700; wherein the main detector 811 faces the side detection station 630 to obtain the image of the battery cell 700 0 corresponding to the side image, the auxiliary detector 812 is set on one side of the main detector 811 along the thickness direction of the battery cell 700 to supplement the angle range not obtained by the main detector 811, so as to ensure that the side detection mechanism 800 can detect the entire side of the battery cell 700, effectively avoiding the blind area caused by the single camera angle of view, thereby improving the integrity of the detection; through the main detector 811 and the auxiliary detector 812, it can ensure that all details of the side of the battery cell 700 are fully captured, reducing the problem of defects that cannot be detected due to the bending of the battery cell 700. Among them, two auxiliary detectors 812 can be set, along the thickness direction of the battery cell 700, one of the auxiliary detectors 812 is set on one side of the main detector 811, and the other auxiliary detector 812 is set on the other side of the main detector 811.

[0061] In some embodiments, see Figure 6 to Figure 7 The side detection mechanism 800 further includes an arched light source 813, which is disposed toward the side detection station 630; compared with a conventional planar light source, the arched light source 813 has a larger irradiation range, so that light can be irradiated onto the battery cell 700 from different directions, so that the main detector 811 and the auxiliary detector 812 can obtain images of the battery cell 700 from different angles. The arched light source 813 is a light source in the prior art that generates light through the arc discharge principle. Generally, the arched light source 813 is curved, usually having a curved lamp tube or a curved reflector.

[0062] During the manufacturing process of the battery cell 700, glue is usually used to fix multiple layer structures (such as positive electrode, negative electrode, separator, etc.) inside the battery cell 700 to ensure that the various layer structures inside the battery cell 700 are stably fixed together to avoid displacement or damage during use. However, during the manufacturing process of the battery cell 700, glue overflow is prone to occur, which affects the quality of the battery cell 700.

[0063] In some embodiments, see Figure 6 to Figure 7The side detection mechanism 800 also includes a UV light source 814 (Ultraviolet light source); glue with fluorescent powder added is used to bond the multiple layer structures inside the battery cell 700 in advance. During detection, the ultraviolet light emitted by the UV light source 814 is irradiated on the battery cell 700. If there is overflowed glue on the surface of the battery cell 700, the fluorescent powder in the glue emits visible light under the irradiation of ultraviolet light, which is beneficial for the side detection mechanism 800 to detect the overflow of glue in the battery cell 700; wherein, the UV light source 814 is arranged on the side of the arch light source 813 close to the side detection station 630, so as to reduce the influence of the light emitted by the arch light source 813 on the UV light source 814.

[0064] The appearance inspection device further includes a fixing plate 815, on which the arched light source 813, the UV light source 814 and the third detector 810 are all arranged; the third support seat 500 is provided with a third rail, on which the fixing plate 815 is slidably arranged, and the driving part of the side driving member is connected to the fixing plate 815 to drive the arched light source 813, the UV light source 814 and the third detector 810 to move in principle or close to the side detection station 630 at the same time. The battery cell appearance inspection device may include a third linear module, which includes a side driving member and a third support seat 500, and the linear module has the characteristics of high precision and stable operation.

[0065] Due to differences in battery type, capacity, application scenario and other factors, different models of tabs 710 have different sizes and shapes, and different models of battery cells 700 have different overall sizes. During the production process, the battery cell 700 is generally fixed in the middle of the workstation. If the model of the battery cell 700 is changed, the overall size of the battery cell 700 and the size of the tabs 710 of the battery cell 700 may become larger or smaller. The battery cell appearance inspection equipment in the related art has a fixed overall structure and can only adapt to a single model of battery cell 700, but cannot adapt to the shaping and inspection requirements of different models of tabs 710.

[0066] In some embodiments, see Figure 4 The surface detection mechanism 400 includes a second support base 430, a surface detector 410 and an adjustment component 440, and the surface detector 410 and the adjustment component 440 are installed on the second support base 430; the surface detector 410 is used to detect the appearance of the battery cell 700 located on the surface detection station 610, and the adjustment component 440 is used to adjust the distance between the surface detector 410 and the surface detection station 610.

[0067] The battery cell 700 is located on the surface inspection station 610. If a different type of battery cell 700 is replaced, the distance between the surface detector 410 and the surface inspection station 610 can be adjusted by adjusting the component 440 to adapt to the different type of battery cell 700; if the size of the battery cell 700 is large, the surface detector 410 is moved away from the surface inspection station 610 by adjusting the component 440, so that the surface detector 410 can capture the entire battery cell 700, and the tab 710 of the battery cell 700 can be ensured to be located within the image, so as to detect the outer surface of the battery cell 700 and the tab 710; if the size of the battery cell 700 is small, the surface detector 410 is moved close to the surface inspection station 610 by adjusting the component 440, so that the battery cell 700 can be clearly displayed in the image captured by the surface detector 410, so as to detect the outer surface of the battery cell 700.

[0068] Among them, the surface detector 410 of the front detection mechanism 450 is located above the front detection station 611 and is set toward the front detection station 611 to obtain the front side 720 image of the battery cell 700, and the surface detector 410 of the back side detection mechanism 460 is located below the back side detection station 612 and is set toward the back side detection station 612 to obtain the back side 730 image of the battery cell 700.

[0069] In some embodiments, see Figure 4 and Figure 8 The adjustment assembly 440 includes an adjuster 441 and a second bracket 442, and the second bracket 442 is fixed on the second support seat 430; a second guide rail is arranged on the second bracket 442, and the movement direction of the surface detector 410 on the second support seat 430 can be guided by the second guide rail; the second guide rail is arranged along the direction from the surface detection mechanism 400 to the surface detection station 610; under the action of the adjuster 441, the surface detector 410 slides on the second guide rail, so that the surface detector 410 is close to or away from the surface detection station 610 to adapt to different types of battery cells 700. The second guide rail is arranged along the direction from the surface detection mechanism 400 to the surface detection station 610 (such as Figure 4 b direction in the figure), so that the surface detector 410 slides on the second guide rail, that is, it can be close to or away from the surface detection station 610, and the movement path of the surface detector 410 can be reduced as much as possible to more efficiently adjust the distance between the surface detector 410 and the surface detection station 610. Among them, the second support seat 430 and the second bracket 442 can be integrally formed. Of course, in other embodiments, a plurality of fixed positions of the surface detector 410 can also be set on the second bracket 442, and the plurality of fixed positions are set along the direction from the surface detection mechanism 400 to the surface detection station 610. By setting the surface detector 410 at different fixed positions, the distance between the surface detector 410 and the surface detection station 610 can be adjusted.

[0070] In some embodiments, see Figure 4 and Figure 8 The surface detector 410 includes a first detector 411 and a second detector 412, the first detector 411 is used to obtain an image of the main surface of the battery cell 700 located on the surface detection station 610, and the second detector 412 is used to obtain an image of the tab 710 of the battery cell 700 located on the surface detection station 610; the surface detection mechanism 400 detects the outer surface of the battery cell 700 through the first detector 411, which is not only conducive to discovering surface defects of the battery cell 700, but also can prevent battery performance degradation or safety hazards caused by external damage; the tab 710 serves as the electrode connection point of the battery cell 700, which draws out the current inside the battery and transmits it to the external circuit; the surface detection mechanism 400 detects the tab 710 of the battery cell 700 through the second detector 412, which can ensure the integrity and quality of the tab 710, thereby ensuring the stability of the electrical connection of the battery cell 700.

[0071] In some embodiments, the first detector 411 and the second detector 412 are both cameras, and the images of the battery cell 700 are obtained by the cameras to detect the battery cell 700 as a whole or the tab 710 of the battery cell 700; the surface detection mechanism 400 also includes a light source, which can assist the camera in obtaining images; the light source can include a coaxial light source and a ring light source. The surface detection mechanism 400 also includes a light-blocking housing 420 disposed on the frame, and the light source is disposed inside the light-blocking housing 420, which can reduce the light dispersion of the light source, guide the light source to focus on the battery cell 700, and reduce the interference of external light.

[0072] In some embodiments, see Figure 4 and Figure 8 The adjustment component 440 may include a support member, the first detector 411 and the second detector 412 are both fixed on the support member, and the support member is slidably arranged on the second guide rail; while supporting the first detector 411 and the second detector 412, the support member can ensure that the relative positions of the first detector 411 and the second detector 412 remain unchanged, so that the second detector 412 can detect the tab 710 of the battery cell 700 while ensuring the first detector 411 has a detection effect on the appearance of the battery cell 700. The support member is generally a support plate, which can save space while meeting the supporting function.

[0073] In some embodiments, see Figure 4 and Figure 8The regulator 441 may include a handle and a transmission, the transmission has an input end and an output end, the handle is connected to the input end, and the support is connected to the output end; the transmission is generally a gear assembly, and when the handle is turned, the transmission transmits force to the support to drive the support to slide on the second guide rail, thereby making the first detector 411 and the second detector 412 synchronously approach or move away from the surface detection station 610.

[0074] In some embodiments, see Fig. 9 and Fig.11 The appearance inspection equipment also includes a first support seat 100 and a shaping drive member. The first support seat 100 is fixed on the base frame, and the tab shaping mechanism 200 is installed on the first support seat 100. Under the drive of the shaping drive member, the tab shaping mechanism 200 moves relative to the first support seat 100, so that the tab shaping mechanism 200 is close to or away from the shaping station 620.

[0075] The shape of the pole lug 710 can be corrected through the pole lug shaping mechanism 200 to ensure the quality of the battery cell 700; the battery cell 700 is located on the shaping station 620. If a different type of battery cell 700 is replaced, the pole lug shaping mechanism 200 can be driven by the shaping drive member to move relative to the first support seat 100, so that the pole lug shaping mechanism 200 is close to or away from the shaping station 620, thereby adjusting the positional relationship between the pole lug shaping mechanism 200 and the shaping station 620 to adapt to different types of battery cells 700.

[0076] The size of the battery cell 700 may vary depending on the model. If the size of the battery cell 700 is large, the shaping drive component drives the pole lug shaping mechanism 200 away from the shaping station 620 to reserve sufficient space to accommodate the battery cell 700, so that the pole lug shaping mechanism 200 can shape the pole lug 710. If the size of the battery cell 700 is small, the shaping drive component drives the pole lug shaping mechanism 200 close to the shaping station 620, so that the pole lug shaping mechanism 200 can shape the pole lug 710 of the battery cell 700.

[0077] The embodiment of the present invention adjusts the positional relationship between the tab shaping mechanism 200 and the first support seat 100 according to the model of the battery cell 700 through the cooperation between the tab shaping mechanism 200 and the shaping drive member, thereby adapting to different models of battery cells 700. The shaping drive member can be arranged on the first support seat 100 to fix the shaping drive member and reduce the problem of uneven displacement or misalignment of the tab shaping mechanism 200 caused by instability or offset of the shaping drive member. The battery cell appearance inspection device may include a first linear module, which includes a shaping drive member and a first support seat 100, and the linear module has the characteristics of high precision and smooth operation.

[0078] In some embodiments, see Figure 2 and Fig. 9 A first guide rail 110 is arranged on the first support seat 100, and the tab shaping mechanism 200 is slidably arranged on the first guide rail 110. The movement direction of the tab shaping mechanism 200 on the first support seat 100 can be guided by the first guide rail 110. The first guide rail 110 is arranged along the direction from the tab shaping mechanism 200 to the shaping station 620 (such as direction a in the figure), so that the tab shaping mechanism 200 can slide on the first guide rail 110 to approach or move away from the shaping station 620, and the movement path of the tab shaping mechanism 200 can be reduced as much as possible, so as to more efficiently adjust the distance between the tab shaping mechanism 200 and the shaping station 620.

[0079] In some embodiments, see Fig.10 , the first guide rail 110 extends to the bottom of the shaping station 620. If the size of the battery cell 700 is small, the shaping drive can drive the tab shaping mechanism 200 to slide on the first guide rail 110 to approach the shaping station 620; the first guide rail 110 extends to the bottom of the shaping station 620, which can ensure that the tab shaping mechanism 200 can perform tab shaping on the battery cell 700 on the shaping station 620, so that the battery cell appearance inspection device can adapt to the small-sized battery cell 700.

[0080] In some embodiments, see Figure 2 The tab shaping mechanism 200 includes a first pressing block 210, a second pressing block 220, a support frame 230, a first flattening driving member 240 and a second flattening driving member disposed on the support frame 230. The first pressing block 210 and the second pressing block 220 are slidably disposed on the support frame 230, and the first pressing block 210 and the second pressing block 220 are disposed on both sides of the shaping station 620. The first pressing block 210 is driven by the first flattening driving member 240 to move closer to or farther from the second pressing block 220, and the second pressing block 220 is driven by the second flattening driving member to move closer to or farther from the first pressing block 210. Generally, the first pressing block 210 is located above the second pressing block 220.

[0081] It can be understood that when the tab of the battery cell 700 is being shaped, the distance between the tab shaping mechanism 200 and the shaping station 620 is adjusted by the shaping drive member so that the tab 710 of the battery cell 700 located on the shaping station 620 is located between the first pressing block 210 and the second pressing block 220; the second flattening drive member drives the second pressing block 220 to approach the first pressing block 210, so that the second pressing block 220 supports the battery cell 700 from the bottom of the battery cell 700, and the first flattening drive member 240 drives the first pressing block 210 to approach the second pressing block 220 to flatten the tab 710 of the battery cell 700, thereby correcting the shape of the tab 710 to ensure the quality of the battery cell 700.

[0082] The support frame 230 can be slidably arranged on the first guide rail 110, and the output shaft of the shaping driver is connected to the support frame 230, so that the shaping driver drives the tab shaping mechanism 200 to move relative to the first support seat 100. Generally, the first flattening driver 240 is a cylinder. The battery cell appearance inspection device can include a second linear module, which includes a second flattening driver and a support frame 230, and the linear module has the characteristics of high precision and smooth operation.

[0083] In some embodiments, the battery cell appearance inspection equipment also includes a smoothing mechanism, a dust removal mechanism, a CCD positioning mechanism and a scanning mechanism arranged on a base frame. The smoothing mechanism is a device in the prior art. The smoothing mechanism can be a tab 710 for smoothing the battery cell 700. Generally, the smoothing mechanism flattens the surface of the battery cell 700 through a rubber roller to prevent bubbles on the surface of the battery cell 700 from affecting the inspection effect; the dust removal mechanism is a device in the prior art. The dust removal mechanism uses a negative pressure dust removal method to remove dust from the bottom and front sides 720 of the battery cell 700 to prevent dust from affecting the inspection effect; the scanning mechanism is a device in the prior art, which can scan the surface of the battery cell 700; the CCD positioning mechanism is a device in the prior art, which can position the battery cell 700.

[0084] In some embodiments, the conveying mechanism 300 further includes a feeding conveyor belt and a first manipulator, the smoothing mechanism includes a first smoothing mechanism and a second smoothing mechanism, the dust removal mechanism includes a first dust removal mechanism and a second dust removal mechanism, the first smoothing mechanism, the first dust removal mechanism, the second smoothing mechanism and the second dust removal mechanism are arranged along the conveying direction of the feeding conveyor belt, the first manipulator is located at the end of the feeding conveyor belt, and a suction cup is arranged at the bottom of the first manipulator; the first smoothing mechanism smoothes the front side 720 of the battery cell 700, the first dust removal mechanism dusts the front side 720 of the battery cell 700, and the first manipulator absorbs the battery cell 700 through the suction cup so that the second smoothing mechanism smoothes the back side 730 of the battery cell 700 and the second dust removal mechanism dusts the back side 730 of the battery cell 700. After the second dust removal mechanism dusts the back side 730 of the battery cell 700, the first manipulator transfers the battery cell 700 to the shaping station 620.

[0085] In some embodiments, the back side detection mechanism 460 is provided with a cache station on the side away from the turntable 310, and the battery cells 700 that have completed the back side detection are placed on the cache station, waiting for unloading; the conveying mechanism 300 also includes a second manipulator, an unloading conveyor belt and an NG material bin. If the control system determines that the battery cell 700 is a qualified product based on the data feedback from the front side detection mechanism 450, the back side detection mechanism 460 and the side detection mechanism 800, the second manipulator transfers the corresponding battery cell 700 to the unloading conveyor belt. If the control system determines that the battery cell 700 is a defective product based on the data feedback from the front side detection mechanism 450, the back side detection mechanism 460 and the side detection mechanism 800, the second manipulator transfers the corresponding battery cell 700 to the NG material bin.

[0086] The second embodiment of the present invention provides a method for inspecting the appearance of a battery cell 700, such as Fig.12 As shown, the appearance inspection device based on any embodiment of the first aspect above includes:

[0087] Step S100: the conveying mechanism 300 transfers the battery cell 700 to the shaping station 620, and the tab shaping mechanism 200 performs tab shaping on the battery cell 700 located on the shaping station 620;

[0088] Step S200: The conveying mechanism 300 transfers the battery cell 700 after the tab shaping to the front inspection station 611, and the front inspection mechanism 450 inspects the front side 720 of the battery cell 700 located on the front inspection station 611 from the upper side of the front inspection station 611;

[0089] Step S300: The conveying mechanism 300 transfers the battery cell 700 after being inspected by the front inspection mechanism 450 to the side inspection station 630, and the side inspection mechanism 800 inspects the side of the battery cell 700 located at the side inspection station 630;

[0090] Step S400 : the conveying mechanism 300 transfers the battery cell 700 inspected by the side inspection mechanism 800 to the back inspection station 612 , and the back inspection mechanism 460 inspects the back side 730 of the battery cell 700 on the back inspection station 612 from the bottom side of the back inspection station 612 .

[0091] The embodiment of the present invention integrates the processes of ear shaping, front inspection, back inspection and side inspection, thereby improving the fluency between the various process flows and thus improving production efficiency; preventing unqualified battery cells 700 from entering subsequent processing links and improving the yield rate; the front inspection mechanism 450 inspects the front side 720 of the battery cell 700 from the upper side of the front inspection station 611, and the back inspection mechanism 460 inspects the back side 730 of the battery cell 700 from the lower side of the back inspection station 612. Without turning the battery cell 700 over, the front side 720 and the back side 730 of the battery cell 700 can be inspected, thereby reducing the defective rate of the product, saving equipment costs and improving production efficiency; the ear 710 of the battery cell 700 can be shaped by the ear shaping mechanism 200, the appearance of the front side 720 and the back side 730 of the battery cell 700 can be inspected by the surface inspection mechanism 400, and the appearance of the side of the battery cell 700 can be inspected by the side inspection mechanism 800.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0093] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. Battery cell appearance inspection equipment, characterized in that: include: Base frame, A conveying mechanism (300) is arranged on the base frame; a shaping station (620), a side inspection station (630) and a surface inspection station (610) are arranged on the conveying mechanism (300); A tab shaping mechanism (200) is arranged on the base frame; the tab shaping mechanism (200) is used to shape the tab (710) of the battery cell (700) located on the shaping station (620); A surface detection mechanism (400) is arranged on the base frame and is used to detect the surface of the battery cell (700) on the surface detection station (610); the surface detection station (610) comprises a front detection station (611) and a back detection station (612), and the surface detection mechanism (400) comprises a front detection mechanism (450) and a back detection mechanism (460); the front detection mechanism (450) detects the front side (720) of the battery cell (700) located on the front detection station (611) from the upper side of the front detection station (611), and the back detection mechanism (460) detects the back side (730) of the battery cell (700) located on the back detection station (612) from the lower side of the back detection station (612); A side detection mechanism (800) is arranged on the base frame; the side detection mechanism (800) is used to detect the side of the battery cell (700) located on the side detection station (630).

2. The appearance inspection device according to claim 1, characterized in that: The conveying mechanism (300) further comprises a transfer assembly (340), wherein the transfer assembly (340) comprises a moving arm (341), wherein the moving arm (341) is used to transfer the battery cell (700) to a reverse side inspection station (612); the battery cell (700) is fixed to the bottom of the moving arm (341).

3. The appearance inspection device according to claim 1, characterized in that: The surface detection mechanism (400) comprises a second support seat (430), a surface detector (410) and an adjustment component (440), wherein the surface detector (410) and the adjustment component (440) are mounted on the second support seat (430); the surface detector (410) is used to detect the appearance of the battery cell (700) located on the surface detection station (610), and the adjustment component (440) is used to adjust the distance between the surface detector (410) and the surface detection station (610).

4. The appearance inspection device according to claim 3, characterized in that: The adjustment assembly (440) comprises an adjuster (441) and a second bracket (442), wherein the second bracket (442) is fixed on the second support seat (430); a second guide rail is arranged on the second bracket (442), and the second guide rail is arranged along the direction from the surface detection mechanism (400) to the surface detection station (610); under the action of the adjuster (441), the surface detector (410) slides on the second guide rail, so that the surface detector (410) is close to or away from the surface detection station (610).

5. The battery cell appearance inspection device according to claim 4, characterized in that: The surface detector (410) comprises a first detector (411) and a second detector (412), wherein the first detector (411) is used to obtain an image of a main surface of the battery cell (700) located on the surface detection station (610), and the second detector (412) is used to obtain an image of a tab (710) of the battery cell (700) located on the surface detection station (610); the adjustment component (440) comprises a support member, wherein the support member connects the first detector (411) and the second detector (412), and the support member is slidably arranged on the second guide rail.

6. The appearance inspection device according to any one of claims 1 to 5, characterized in that: The side detection mechanism (800) comprises a third detector (810), and the third detector (810) is used to obtain an image of the side of the battery cell (700) located on the side detection station (630); the third detector (810) comprises a main detector (811) and a sub-detector (812), and the main detector (811) and the sub-detector (812) are arranged along the thickness direction of the battery cell (700) located on the side detection station (630).

7. The appearance inspection device according to any one of claims 1 to 5, characterized in that: The transmission mechanism (300) comprises a fixer (330), the fixer (330) comprises a base (331), a driving part (332) and a bearing part (333), the driving part (332) is fixed to the base (331), the driving part of the driving part (332) is connected to the bearing part (333), and the bearing part (333) is used to bear the battery cell (700); under the drive of the driving part (332), the bearing part (333) rotates, so that the battery cell (700) located on the bearing part (333) rotates around itself along the direction of a first axis, and the first axis is an axis extending along the thickness direction of the battery cell (700).

8. The appearance inspection device according to any one of claims 1 to 5, characterized in that: The appearance inspection device also includes a third support seat (500) and a side driving member, wherein the third support seat (500) is fixed on the base frame, and the side inspection mechanism (800) is installed on the third support seat (500); under the drive of the side driving member, the side inspection mechanism (800) moves relative to the third support seat (500), so that the side inspection mechanism (800) is close to or away from the side inspection station (630).

9. The appearance inspection device according to any one of claims 1 to 5, characterized in that: The side detection mechanism (800) further comprises an arched light source (813) and a UV light source (814), wherein the arched light source (813) and the UV light source (814) are arranged toward the side detection station (630).

10. The appearance inspection device according to any one of claims 1 to 5, characterized in that: The appearance inspection device also includes a first support seat (100) and a shaping drive member, wherein the first support seat (100) is fixed on the base frame, and the pole lug shaping mechanism (200) is installed on the first support seat (100); under the drive of the shaping drive member, the pole lug shaping mechanism (200) moves relative to the first support seat (100), so that the pole lug shaping mechanism (200) is close to or away from the shaping station (620).

11. A method for detecting the appearance of a battery cell, characterized in that: The appearance inspection device according to any one of claims 1 to 10 comprises: The conveying mechanism (300) transfers the battery cell (700) to the shaping station (620), and the tab shaping mechanism (200) shapes the tab (710) of the battery cell (700) located on the shaping station (620); The conveying mechanism (300) transfers the battery cell (700) after the tab (710) has been shaped to the front inspection station (611), and the front inspection mechanism (450) inspects the front side (720) of the battery cell (700) located on the front inspection station (611) from the upper side of the front inspection station (611); The conveying mechanism (300) transfers the battery cell (700) after being inspected by the front inspection mechanism (450) to the side inspection station (630), and the side inspection mechanism (800) inspects the side surface of the battery cell (700) located at the side inspection station (630); The conveying mechanism (300) transfers the battery cell (700) after being inspected by the side inspection mechanism (800) to the back side inspection station (612), and the back side inspection mechanism (460) inspects the back side (730) of the battery cell (700) located on the back side inspection station (612) from the bottom side of the back side inspection station (612).

Images