Battery cell overturning detection device

Abstract

The invention discloses a battery cell overturning detection device, which comprises a conveying mechanism, an overturning mechanism and a detection mechanism, a detection station is arranged on a conveying path of the conveying mechanism, the conveying mechanism is configured to convey a to-be-detected battery cell to the detection station along a first direction, and a first surface of the battery cell at the detection station faces upwards; the turnover mechanism is arranged at the detection station and located on the side of the conveying mechanism, and the turnover mechanism is configured to pick up the battery cells at the detection station, jack the picked battery cells to the detection position and then turn over the battery cells by 180 degrees, so that the second faces of the battery cells face upwards; the detection mechanism is arranged at the detection station, and the detection mechanism is at least configured to detect the appearance of the battery cell body and the tab of the battery cell at the detection position and detect the layer number of the tab of the battery cell at the detection position; the detection device can detect the appearance of the battery cell and the number of layers of the tabs at one detection station, is high in function integration level and small in occupied space, and improves the detection efficiency of the battery cell.

Description

Technical Field

[0001] The present application belongs to the technical field of battery cell visual inspection, and in particular, relates to a battery cell flip detection device. Background Art

[0002] Battery cells can be divided into wound cells and stacked cells according to different manufacturing processes. Winding cells are formed by winding the positive electrode, diaphragm paper, negative electrode and other materials of the battery. Winding cells usually include a cell body and two pole ears spaced at one end of the cell body; stacked cells are formed by stacking the positive electrode, diaphragm, negative electrode and other materials of the battery in a certain way to form a complete cell structure. Stacked cells usually include a cell body and two pole ears located at both ends of the cell body. The pole ears are usually multi-layer structures and are an important component of the battery. The pole ears are used to achieve electrical connection between the inside and outside of the battery.

[0003] During the production process of battery cells, it is necessary to inspect the appearance of the battery cell body and the tabs, as well as the number of layers of the tabs, to determine whether the battery cell is qualified; existing inspection methods are mainly divided into manual inspection and CCD visual inspection, and manual inspection has low inspection efficiency and large inspection errors; and existing CCD visual inspection devices usually need to set up multiple inspection stations to inspect the appearance of the battery cell body and the tabs, as well as the number of layers of the tabs, through multiple inspection steps, resulting in a large overall footprint of the inspection equipment and low inspection efficiency. Summary of the invention

[0004] The purpose of the present application is to provide a battery cell flip detection device to solve the problems of large occupied space and low detection efficiency of existing battery cell detection devices.

[0005] To achieve this goal, this application adopts the following technical solutions:

[0006] The present application provides a battery cell flip detection device, wherein the battery cell comprises a battery cell body and two tabs arranged on the battery cell body, and the battery cell flip detection device comprises a conveying mechanism, a flipping mechanism and a detection mechanism, wherein:

[0007] A testing station is arranged on the conveying path of the conveying mechanism, and the conveying mechanism is configured to convey the battery cell to be tested to the testing station along a first direction, with the first surface of the battery cell at the testing station facing upward;

[0008] The flipping mechanism is arranged at the inspection station and located at the side of the conveying mechanism, and the flipping mechanism is configured to pick up the battery cell at the inspection station and lift the picked-up battery cell to the inspection position and then flip it 180° so that the second side of the battery cell faces upward;

[0009] The detection mechanism is disposed at the detection station, and is configured to detect the appearance of the battery cell body and the tabs of the battery cell at the detection position and to detect the number of layers of the tabs of the battery cell at the detection position.

[0010] Optionally, the flip mechanism includes a base frame, a lifting drive member, a lifting member, a flip drive member, a flip seat and a clamping assembly, wherein:

[0011] The base frame is fixedly mounted on the side of the conveying mechanism, the lifting member is escalably mounted on the base frame, the driving end of the lifting member is connected to the lifting member, and the lifting member is configured to drive the lifting member to move upward and downward;

[0012] The fixed end of the flip driving member is mounted on the lifting member, the driving end of the flip driving member is connected to the flip seat, and the flip driving member is configured to drive the flip seat to flip at a preset angle;

[0013] The clamping assembly is installed on the flip seat, and the clamping assembly is configured to clamp or release the battery core.

[0014] Optionally, two backlight sources are fixedly installed on the flip seat at intervals, each of the backlight sources corresponds to a pole ear of the battery cell, and the two pole ears of the battery cell after flipping are respectively located directly above the two backlight sources, and the backlight sources are configured to provide fill light when the detection mechanism detects the appearance of the pole ears of the battery cell.

[0015] Optionally, the detection mechanism includes a first detection component, two sets of second detection components, two sets of third detection components and two sets of fourth detection components, wherein:

[0016] The first detection component is disposed above the detection position, and is configured to take a photo of the second surface of the battery cell at the detection position, so as to cooperate with the processing unit to perform appearance detection on the second surface of the battery cell;

[0017] The two sets of second detection components are arranged at intervals on both sides of the detection position along the second direction, each set of the second detection components corresponds to an end face of the battery cell at the detection position in the second direction, and the two sets of second detection components are configured to take photos of the two end faces of the battery cell at the detection position in the second direction respectively, so as to cooperate with the processing unit to perform appearance inspection on the two end faces of the battery cell in the second direction;

[0018] The two sets of third detection components are arranged above the detection position at intervals, each set of the third detection components corresponds to a tab of the battery cell at the detection position, and the two sets of third detection components are configured to respectively take photos of the top surfaces of the two tabs of the battery cell at the detection position, so as to cooperate with the processing unit to perform appearance inspection on the two tabs of the battery cell;

[0019] The two sets of fourth detection components are arranged at intervals at the detection position, and each set of the fourth detection components corresponds to a pole ear of the battery cell at the detection position. The two sets of fourth detection components are configured to respectively take pictures of one side of the two pole ears of the battery cell at the detection position, so as to cooperate with the processing unit to detect the number of layers of the two pole ears of the battery cell.

[0020] Optionally, the battery cell is a laminated battery cell, the two tabs are respectively arranged at two ends of the battery cell body in the second direction, and the two sets of fourth detection components are arranged at intervals along the second direction;

[0021] Alternatively, the battery cell is a wound battery cell, the two tabs are spaced apart at one end of the battery cell body in the second direction, and the two sets of fourth detection components are spaced apart along the first direction.

[0022] Optionally, the first detection component is further configured to take a photo of the first side of the battery cell before the flipping mechanism flips the battery cell, so as to cooperate with the processing unit to perform appearance detection on the first side of the battery cell;

[0023] The first detection assembly includes a first base, at least one first camera and two first bar-shaped light sources, wherein:

[0024] The first base is fixedly mounted above the detection position, the first camera is fixedly mounted on the first base, the shooting end of the at least one first camera is vertically downward and the shooting range covers the first surface or the second surface of the battery cell facing upward, the two first strip-shaped light sources are spaced apart on both sides of the first base along the first direction, and the first strip-shaped light sources extend along the second direction;

[0025] The second detection assembly includes a second base, at least one second camera and a second bar light source, wherein:

[0026] The second base is fixedly mounted on one side of the detection position, the second camera is fixedly mounted on the second base, the shooting end of the at least one second camera is horizontally facing the battery cell and the shooting range covers an end surface of the battery cell in the second direction, the second strip light source is mounted on the second base and is located obliquely above the second camera close to the battery cell, and the second strip light source extends along the first direction.

[0027] Optionally, the third detection component includes a third base and a third camera, the third base is fixed above the detection position, the third camera is fixedly mounted on the third base, the shooting end of the third camera is vertically facing downward and the shooting range covers the top surface of a pole ear of the corresponding battery cell;

[0028] The fourth detection component includes a fourth base, a fourth camera and an annular light source. The fourth base is fixedly installed on one side of the detection position, the fourth camera is fixedly installed on the bottom surface of the fourth base, the shooting end of the fourth camera is horizontally facing the side of one pole ear of the battery cell, and the annular light source is fixedly installed on the shooting path of the fourth camera.

[0029] Optionally, the battery cell flipping detection device further includes a plurality of battery cell jigs, wherein the battery cell jigs are configured to carry and position the battery cells, and the conveying mechanism is configured to carry and convey the battery cell jigs to the detection station along a first direction, so that the battery cells on the battery cell jigs are moved to the detection station;

[0030] The conveying mechanism is provided with two sets of limit assemblies at the detection station, the two sets of limit assemblies are arranged at intervals along the first direction, the limit assemblies include a limit driving member and a limit member, wherein: the limit member is rotatably mounted on the conveying mechanism, the driving end of the limit driving member is connected to the limit member, and the limit driving member is configured to drive the limit member to rotate so that the limit member switches to a limit state or an avoidance state;

[0031] The limit driving members of the two sets of the limit assemblies drive the corresponding limit members to rotate upward to a limit state, so that the two limit members respectively abut against the two sides of the battery cell fixture at the detection station in the first direction, thereby positioning the battery cell fixture at the detection station;

[0032] The limit driving parts of the two sets of the limit assemblies drive the corresponding limit parts to rotate downward to an avoidance state, so that the two limit parts move below the bottom surface of the battery cell tooling, thereby avoiding the movement of the tested battery cell out of the testing station and the movement of the next battery cell to be tested into the testing station.

[0033] Optionally, the conveying mechanism is the first conveying line of a battery cell production line of a battery cell manufacturer, and the first conveying line is configured to receive the battery cells of the previous process on the battery cell production line and convey the received battery cells along the first direction to an inspection station, and the first conveying line is also configured to convey the battery cells after inspection at the inspection station along the first direction to the next process of the battery cell production line.

[0034] Optionally, the conveying mechanism is a second conveyor line on the first conveyor line of the battery cell production line connected to the battery cell manufacturer, the first conveyor line is configured to receive the battery cells of the previous process on the battery cell production line and convey the received battery cells along the first direction to a transfer station, the second conveyor line is configured to receive the battery cells at the transfer station and convey the received battery cells to the inspection station for inspection, the second conveyor line is further configured to convey the battery cells inspected at the inspection station to the first conveyor line, and the first conveyor line is further configured to convey the received inspected battery cells along the first direction to the next process of the battery cell production line.

[0035] The beneficial effects of the battery cell flip detection device proposed in this application are:

[0036] 1) Through the cooperation of the flipping mechanism and the detection mechanism, the appearance of the battery body and the tab of the battery cell and the number of layers of the tab of the battery cell can be detected at one detection station, which has high functional integration, small space occupation, and improved battery cell detection efficiency;

[0037] 2) Two backlight sources are integrated on the flip mechanism, which can provide supplementary light when inspecting the appearance of the battery cell's tabs, thereby improving the accuracy and precision of the appearance inspection of the battery cell's tabs, with a reasonable layout and space saving;

[0038] 3) It can be used to test stacked cells and wound cells, with good compatibility;

[0039] 4) The battery cell is circulated through the battery cell tooling, and at the same time, a limit component for limiting the battery cell tooling is provided at the inspection station, which ensures the position accuracy of the battery cell tooling at the inspection station and facilitates the clamping component to pick up and release the battery cell;

[0040] 5) The battery cell flip detection device can be installed on the original battery cell production line of the battery cell manufacturer as needed, with low cost and good adaptability;

[0041] 6) The battery cell flipping detection device can also be used as an integrated machine for the battery cell production line of the battery cell manufacturer as required, which is easy to implement and has good flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the three-dimensional structure of the battery cell flip detection device provided in an embodiment of the present application;

[0043] Figure 2 It is a schematic diagram of the three-dimensional structure of an existing laminated battery cell;

[0044] Figure 3 It is a schematic diagram of the three-dimensional structure of an existing wound battery cell;

[0045] Figure 4 It is a schematic diagram of the three-dimensional structure of the flipping mechanism of the battery cell flipping detection device provided in an embodiment of the present application;

[0046] Figure 5 It is a three-dimensional structural schematic diagram of a detection mechanism of a battery cell flip detection device provided in an embodiment of the present application adapted to a stacked battery cell;

[0047] Figure 6 It is a top view schematic diagram of a detection mechanism of a battery cell flipping detection device provided in an embodiment of the present application adapted to a stacked battery cell;

[0048] Figure 7 It is a schematic diagram of the three-dimensional structure of the detection mechanism of the battery cell flipping detection device provided in the embodiment of the present application adapted to the winding battery cell;

[0049] Figure 8 It is a schematic diagram of a top view of the structure of a detection mechanism of a battery cell flipping detection device provided in an embodiment of the present application adapted to a winding battery cell;

[0050] Fig. 9 yes Figure 1 A partial enlarged view of the middle A;

[0051] Fig.10 It is a structural schematic diagram of an implementation mode of a conveying mechanism of a battery cell flip detection device provided in an embodiment of the present application;

[0052] Fig.11 It is a structural schematic diagram of another implementation manner of the conveying mechanism of the battery cell flip detection device provided in an embodiment of the present application.

[0053] Figures 1 to 11 The following reference numerals are included:

[0054] Battery cell 10: battery cell body 11, tab 12;

[0055] Conveying mechanism 20: detection station 21, limit assembly 22, limit driving member 220, limit member 221, roller 222, first conveying line 23, second conveying line 24, transfer station 25;

[0056] Flipping mechanism 30: base frame 31, lifting drive member 32, lifting member 33, flipping drive member 34, flip seat 35, clamping assembly 36, backlight source 37;

[0057] Detection mechanism 40: first detection assembly 41, first base 410, first camera 411, first strip light source 412, second detection assembly 42, second base 420, second camera 421, second strip light source 422, third detection assembly 43, third base 430, third camera 431, fourth detection assembly 44, fourth base 440, fourth camera 441, annular light source 442, mounting bracket 45;

[0058] Battery cell tooling 50. DETAILED DESCRIPTION

[0059] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0060] This application proposes a battery cell flip detection device, please refer to Figures 1 to 4 As shown, the battery cell 10 includes a battery cell body 11 and two tabs 12 arranged on the battery cell body 11. The battery cell flip detection device includes a conveying mechanism 20, a flipping mechanism 30 and a detection mechanism 40. A detection station 21 is arranged on the conveying path of the conveying mechanism 30. The conveying mechanism 30 is configured to convey the battery cell 10 to be tested along a first direction ( Figure 1 The battery cell 10 is transported to the inspection station 21 in the X direction (in the X direction) with the first side of the battery cell 10 on the inspection station 21 facing upward; the flipping mechanism 30 is arranged at the inspection station 21 and is located on the side of the conveying mechanism 20, and the flipping mechanism 30 is configured to pick up the battery cell 10 at the inspection station 21 and lift the picked-up battery cell 10 to the inspection position and then flip it 180° so that the second side of the battery cell 10 faces upward; the inspection mechanism 40 is arranged at the inspection station 21, and the inspection mechanism 40 is configured to inspect the appearance of the battery cell body 11 and the tab 12 of the battery cell 10 at the inspection position and to inspect the number of layers of the tab 12 of the battery cell 10 at the inspection position.

[0061] The battery cell flipping detection device proposed in the embodiment of the present application picks up the battery cell 10 on the detection station 21 through the flipping mechanism 30 and lifts the battery cell 10 to a preset detection position. The detection mechanism 40 detects the appearance of the battery cell body 11 of the battery cell 10 at the detection position and detects the appearance and number of layers of the two pole tabs 12 of the battery cell 10, thereby realizing the detection of the appearance of the battery body 11 and the pole tabs 12 of the battery cell 10 and the number of layers of the pole tabs 12 of the battery cell 10 at one detection station 21. It has high functional integration, occupies little space, and improves the detection efficiency of the battery cell 10.

[0062] As an embodiment, the flipping mechanism 30 includes a base frame 31, a lifting drive member 32, a lifting member 33, a flipping drive member 34, a flip seat 35 and a clamping assembly 36. The base frame 31 is fixedly installed on the side of the conveying mechanism 20, the lifting member 33 is liftably installed on the base frame 31, the driving end of the lifting drive member 32 is connected to the lifting member 33, and the lifting drive member 32 is configured to drive the lifting member 33 to lift and lower; the fixed end of the flipping drive member 34 is installed on the lifting member 33, the driving end of the flipping drive member 34 is connected to the flip seat 35, and the flipping drive member 34 is configured to drive the flip seat 35 to flip at a preset angle; the clamping assembly 36 is installed on the flip seat 35, and the clamping assembly 36 is configured to clamp or release the battery cell 10.

[0063] Specifically, the lifting drive member 32 adopts a cylinder, and the lifting member 33 can be slidably installed on the base frame 31 through a sliding guide pair composed of a linear guide rail and a slider, so as to improve the stability of the lifting and lowering of the lifting member 33.

[0064] Specifically, the turning driving member 34 is a rotary cylinder, and the rotating shaft of the rotary cylinder is connected to the turning seat 35 .

[0065] Specifically, the clamping assembly 36 adopts a commonly used pneumatic clamp.

[0066] The general working principle of the flipping mechanism 30 proposed in the embodiment of the present application is:

[0067] S1, in the initial state, the clamping assembly 36 on the flip seat 35 is arranged downward, and the lifting drive member 32 drives the lifting member 33 to descend to the material taking position;

[0068] S2, the clamping assembly 36 clamps the battery cell 10 at the inspection station 21;

[0069] S3, the lifting driving member 32 drives the lifting member 33 to rise to the detection position;

[0070] S4, the turning driving member 34 drives the turning seat 35 to turn 180 degrees, so that the clamping assembly 36 on the turning seat 35 faces upward, and further the second surface of the battery cell 10 faces upward.

[0071] It can be seen that through the cooperation of the lifting drive 32, the lifting member 33, the flipping drive 34, the flipping seat 35 and the clamping assembly 36, it is possible to pick up the battery cell 10 at the detection station 21 and lift the picked battery cell 10 to the detection position and then flip it 180° to facilitate the appearance inspection of the second side of the battery 10, providing a flipping mechanism 30 with a simple structure and stable and reliable operation.

[0072] As an embodiment, two backlight sources 37 are fixedly installed at intervals on the flip seat 35, and each backlight source 37 corresponds to a pole ear 12 of the battery cell 10. The two pole ears 12 of the flipped battery cell 10 are respectively located directly above the two backlight sources 37. The backlight source 37 is configured to provide fill light when the detection mechanism 40 detects the appearance of the pole ears 12 of the battery cell 10.

[0073] Specifically, according to the type of the detected battery cell 10, the two backlight light sources 37 can be arranged in the following two ways: first, the battery cell 10 is a laminated battery cell, and the two backlight light sources 37 are arranged along the second direction ( Figure 1 second, the battery cell 10 is a wound battery cell, and two backlight light sources 37 are fixed on the flip seat 35 at intervals along a first direction, and the first direction is perpendicular to the second direction.

[0074] It can be seen that by arranging two backlight sources 37 on the flip seat 35, it is possible to implement fill light on the pole ear 12 below the pole ear 12 during the appearance inspection of the pole ear 12 of the battery cell 10, thereby improving the accuracy and precision of the appearance inspection of the pole ear 12 of the battery cell 10, while rationally utilizing the space on the flip seat 35, with a reasonable layout and ingenious design.

[0075] As an embodiment, the detection mechanism 40 includes a first detection component 41, two sets of second detection components 42, two sets of third detection components 43 and two sets of fourth detection components 44. The first detection component 41 is arranged above the detection position, and the first detection component 41 is configured to take a picture of the second side of the battery cell 10 at the detection position to cooperate with the processing unit to perform appearance detection on the second side of the battery cell 10; the two sets of second detection components 42 are arranged on both sides of the detection position at intervals along the second direction, and each set of second detection components 42 corresponds to an end face of the battery cell 10 at the detection position in the second direction. The two sets of second detection components 42 are configured to take pictures of the two end faces of the battery cell 10 at the detection position in the second direction, respectively, to cooperate with the processing unit to perform appearance detection on the second side of the battery cell 10 in the second direction. Appearance inspection is performed on the two end faces; two sets of third inspection components 43 are arranged at intervals above the inspection position, each set of third inspection components 43 corresponds to a pole ear 12 of the battery cell 10 at the inspection position, and the two sets of third inspection components 43 are configured to respectively take pictures of the top surfaces of the two pole ears 12 of the battery cell 10 at the inspection position, so as to cooperate with the processing unit to perform appearance inspection on the two pole ears 12 of the battery cell 10; two sets of fourth inspection components 44 are arranged at intervals at the inspection position, each set of fourth inspection components 44 corresponds to a pole ear 12 of the battery cell 10 at the inspection position, and the two sets of fourth inspection components 44 are configured to respectively take pictures of one side surface of the two pole ears 12 of the battery cell 10 at the inspection position, so as to cooperate with the processing unit to detect the number of layers of the two pole ears 12 of the battery cell 10.

[0076] It can be seen that the appearance inspection of the second side of the battery cell 10 is implemented through the first inspection component 41; the appearance inspection of the two end faces of the battery cell 10 in the second direction is implemented through two sets of second inspection components 42, the appearance inspection of the two pole ears 12 of the battery cell 10 is implemented through two sets of third inspection components 43, and the number of layers of the two pole ears 12 of the battery cell 10 is implemented through two sets of fourth inspection components 44, thereby providing a detection mechanism 40 with a reasonable layout and small space occupation.

[0077] See also Figure 1 , Figure 2 , Figure 3 , Figures 5 to 8 As shown, as an embodiment, the battery cell 10 is a laminated battery cell, the two pole ears 12 are respectively arranged at the two ends of the battery cell body 11 in the second direction, and the two sets of fourth detection components 44 and the two sets of third detection components 43 are spaced apart along the second direction; or, the battery cell 10 is a wound battery cell, the two pole ears 12 are spaced apart at one end of the battery cell body 11 in the second direction, and the two sets of fourth detection components 44 and the two sets of third detection components 43 are spaced apart along the first direction.

[0078] It can be seen that by setting the installation positions of the two sets of fourth detection components 44 and the two sets of third detection components 43, the detection mechanism 40 can adapt to the laminated battery cells and the wound battery cells, thereby improving the adaptability and compatibility of the detection device.

[0079] As an embodiment, the first detection component 41 is also configured to take a photo of the first side of the battery cell 10 before the flipping mechanism 30 flips the battery cell 10, so as to cooperate with the processing unit to perform appearance inspection on the first side of the battery cell 10; the first detection component 41 includes a first base 410, at least one first camera 411 and two first strip light sources 412, the first base 410 is fixedly installed above the detection position, the first camera 411 is fixedly installed on the first base 410, the shooting end of at least one first camera 411 is vertically downward and the shooting range covers the first side or the second side of the battery cell 10 facing upward, and the two first strip light sources 412 are spaced along the first direction. The partition is arranged on both sides of the first base 410, and the first strip light source 412 extends along the second direction; the second detection component 42 includes a second base 420, at least one second camera 421 and a second strip light source 422, the second base 420 is fixedly installed on one side of the detection position, the second camera 421 is fixedly installed on the second base 420, the shooting end of at least one second camera 421 is horizontally facing the battery cell 10 and the shooting range covers an end face of the battery cell 10 in the second direction, the second strip light source 422 is installed on the second base 420 and is located obliquely above the second camera 421 close to the battery cell 10, and the second strip light source 422 extends along the first direction.

[0080] Specifically, when the battery cell 10 is a stacked battery cell, since the length of the stacked battery cell in the second direction is longer, in order to ensure that the shooting range of the first camera 411 covers the first side or the second side of the stacked battery cell, two first cameras 411 are installed on the first base 410 at intervals along the second direction, and the installation height of the first camera 411 on the first base 410 is adjustable; when the battery cell 10 is a wound battery cell, since the length of the wound battery cell in the first direction is longer, in order to ensure that the shooting range of the first camera 411 covers the first side or the second side of the wound battery cell, two first cameras 411 are installed on the first base 410 at intervals along the first direction, and the installation height of the first camera 411 on the first base 410 is adjustable.

[0081] Specifically, when the battery cell 10 is a wound battery cell, since the lengths of the two end faces of the wound battery cell in the second direction are longer, in order to ensure that the shooting range of the second camera 421 covers one end face of the battery cell 10 in the second direction, two second cameras 421 are arranged on the second base 420 at intervals along the first direction, and the installation position of the second camera 421 on the second base 420 along the second direction is adjustable.

[0082] Specifically, a mounting frame 45 is installed on both the first base 410 and the second base 420, and two first strip light sources 412 are installed on the mounting frame 45 on the first base 410 at intervals along the second direction, and the installation angle of the first strip light sources 412 on the corresponding mounting frame 45 and the installation position along the second direction are adjustable; the second strip light source 422 is installed on the mounting frame 46 on the second base 420, and the installation height and installation angle of the second strip light source 422 on the corresponding mounting frame 45 are adjustable.

[0083] It can be seen that by setting the first detection component 41 to also perform appearance inspection on the first surface of the battery cell 10, the first detection component 41 can perform appearance inspection on the two large surfaces of the battery cell 10, thereby further improving the inspection efficiency of the battery cell 10; by adjusting the installation positions of the first camera 411 and the second camera 421 and adjusting the installation positions of the first strip light source 412 and the second strip light source 422, the first camera 411 and the second camera 421 are in a suitable shooting position, and the first strip light source 412 and the second strip light source 422 are in a suitable fill light position, thereby ensuring shooting accuracy and good adaptability.

[0084] As an embodiment, the third detection component 43 includes a third base 430 and a third camera 431, the third base 430 is fixed above the detection position, the third camera 431 is fixedly installed on the third base 430, the shooting end of the third camera 431 is vertically downward and the shooting range covers the top surface of a pole ear 12 of the corresponding battery cell 10; the fourth detection component 44 includes a fourth base 440, a fourth camera 441 and an annular light source 442, the fourth base 440 is fixedly installed on one side of the detection position, the fourth camera 441 is fixedly installed on the bottom surface of the fourth base 440, the shooting end of the fourth camera 441 is horizontally facing the side of a pole ear 12 of the battery cell 10, and the annular light source 442 is fixedly installed on the shooting path of the fourth camera 441.

[0085] Specifically, a frame (not shown) is disposed above the inspection station 21 , and the first base 410 , the second base 420 , the third base 430 and the fourth base 440 are all detachably fixedly mounted on the frame.

[0086] Specifically, when the battery cell 10 is a stacked battery cell, the third bases 430 of the two sets of third detection components 43 are arranged at intervals along the second direction and are respectively located on both sides of the first base 410 in the second direction, and the fourth bases 440 of the two sets of fourth detection components 44 are arranged at intervals along the second direction; when the battery cell 10 is a wound battery cell, the third bases 430 of the two sets of third detection components 43 are arranged at intervals along the first direction and are respectively located on both sides of the first base 410 in the first direction, and the fourth bases 440 of the two sets of fourth detection components 44 are arranged at intervals along the first direction.

[0087] Specifically, the installation height of the third camera 431 on the third base 430 is adjustable, and the installation position of the fourth camera 441 on the fourth base 440 along the first direction is adjustable.

[0088] It can be seen that the top surfaces of the two pole ears 12 of the battery cell 10 are photographed through the two third cameras 431, and the side surfaces of the two pole ears 12 of the battery cell 10 are photographed through the two fourth cameras 441; by adjusting the installation positions of the third camera 431 and the fourth camera 441, the third camera 431 and the fourth camera 441 are placed in suitable shooting positions, thereby ensuring shooting accuracy and good adaptability.

[0089] See also Figure 1 , Figure 2 and Fig. 9As shown, as an embodiment, the battery cell flip detection device also includes a plurality of battery cell fixtures 50, the battery cell fixtures 50 are configured to carry and position the battery cells 10, and the conveying mechanism 20 is configured to carry and convey the battery cell fixtures 50 to the detection station 21 along the first direction, so that the battery cells 10 on the battery cell fixtures 50 are moved to the detection station 21; the conveying mechanism 20 is provided with two sets of limit assemblies 22 at the detection station 21, and the two sets of limit assemblies 22 are arranged at intervals along the first direction, and the limit assemblies 22 include a limit driving member 220 and a limit member 221, and the limit member 221 is rotatably mounted on the conveying mechanism 20, and the driving end of the limit driving member 220 is connected to the limit member 221, and the limit driving member 220 is configured to The limit member 221 is driven to rotate so that the limit member 221 switches to the limit state or the avoidance state; the limit driving members 220 of the two sets of limit assemblies 22 drive the corresponding limit members 221 to rotate upward to the limit state, so that the two limit members 221 respectively abut against the two sides of the battery cell fixture 50 at the detection station 21 in the first direction, thereby positioning the battery cell fixture 50 at the detection station 21; the limit driving members 220 of the two sets of limit assemblies 22 drive the corresponding limit members 221 to rotate downward to the avoidance state, so that the two limit members 221 move to below the bottom surface of the battery cell fixture 50, thereby avoiding the detected battery cell 10 from being moved out of the detection station 21 and the next battery cell 10 to be detected from being moved into the detection station 21.

[0090] Specifically, a roller 222 is rotatably mounted on the end of the limiting member 221 , so that the contact between the limiting member 221 and the battery cell fixture 50 is rolling contact, thereby reducing the wear on the battery cell fixture 50 .

[0091] Specifically, the limiting driving component 220 is a cylinder.

[0092] It can be seen that by setting up a plurality of battery cell tooling 50, the battery cell 10 can be automatically circulated and accurately positioned in each process, which is beneficial to improving the accuracy of visual inspection; by setting up two sets of limit assemblies 22, the battery cell tooling 50 can be positioned on the inspection station 21, thereby improving the position accuracy of the battery cell 10 at the inspection station 21 and improving the accuracy of the battery cell 10 inspection.

[0093] See also Figure 1 , Figure 2 and Fig.10 As shown, as an embodiment, the conveying mechanism 20 is the first conveying line 23 of the battery cell production line of the battery cell manufacturer. The first conveying line 23 is configured to receive the battery cells 10 of the previous process on the battery cell production line and convey the received battery cells 10 along the first direction to the inspection station 21. The first conveying line 23 is also configured to convey the battery cells 10 after inspection at the inspection station 21 along the first direction to the next process of the battery cell production line.

[0094] It can be seen that by setting the conveying mechanism 20 as the first conveying line 23 of the battery cell production line of the battery cell manufacturer, a battery cell flipping detection device installed on the original battery cell production line of the battery cell manufacturer is provided, which has good adaptability and low cost and can meet the different production rhythm requirements of the production line.

[0095] See also Figure 1 , Figure 2 and Fig.11 As shown, as an embodiment, the conveying mechanism 20 is a second conveyor line 24 on the first conveyor line 23 of the battery cell production line connected to the battery cell manufacturer, and a transfer station 25 is provided on the conveying path of the first conveyor line 23. The first conveyor line 23 is configured to receive the battery cells 10 produced in the previous process of the battery cell production line and convey the received battery cells 10 to the transfer station 25 along the first direction, and the second conveyor line 24 is configured to receive the battery cells 10 at the transfer station 25 and convey the received battery cells 10 to the inspection station 21 for inspection, and the second conveyor line 24 is also configured to convey the inspected battery cells 10 to the first conveyor line 23, and the first conveyor line 23 is also configured to convey the received inspected battery cells 10 to the next process along the first direction.

[0096] Specifically, a conveying mechanism is usually provided at the transfer station 25 and at the discharge end of the second conveyor line 24 , and the conveying mechanism is used to realize the flow of the battery cells 10 between the first conveyor line 23 and the second conveyor line 24 .

[0097] Specifically, the first conveying line 23 and the second conveying line 24 are both step-by-step conveying lines.

[0098] It can be seen that by setting the conveying mechanism 20 as the second conveying line 24 on the first conveying line 23 of the battery cell production line of the battery cell manufacturer, a battery cell flipping detection device for connecting to the original battery cell production line of the battery cell manufacturer is provided, that is, the battery cell flipping detection device is an integrated machine, which is easy to implement and has good flexibility.

[0099] See also Figure 1 and Figure 5 As shown, the general working principle of the battery cell flip detection device proposed in the embodiment of the present application is:

[0100] S1, the conveying mechanism 20 receives the battery cell 10 to be tested and conveys the received battery cell 10 to the testing station 21;

[0101] S2, the flipping mechanism 30 picks up the battery cell 10 on the inspection station 21 and lifts the battery cell to the inspection position and flips it 180° so that the second side of the battery cell 10 faces upward;

[0102] S3, the first camera 411 takes a picture of the second surface of the battery cell 10 at the detection position and sends the captured image information to the processing unit, the two second cameras 421 respectively take pictures of the two end surfaces of the battery cell 10 at the detection position in the second direction and send the captured image information to the processing unit, the two third cameras 431 respectively take pictures of the top surfaces of the two pole ears 12 of the battery cell 10 at the detection position and send the captured image information to the processing unit, and the two fourth cameras 441 respectively take pictures of the side surfaces of the two pole ears 12 of the battery cell 10 at the detection position and send the captured image information to the processing unit;

[0103] S4, the processing unit processes the images received from the first camera 411, the second camera 421, the third camera 431 and the fourth camera 441, and determines whether the appearance of the second surface and the two end surfaces of the battery cell 10 is qualified according to the processing results, and determines whether the appearance and the number of layers of the two tabs 12 of the battery cell 10 are qualified;

[0104] S6 , the conveying mechanism 20 conveys the inspected battery cell 10 to the next process.

[0105] It should be noted that: in step S2, before the flipping mechanism 30 flips the picked up battery cell 10, the first camera 411 can take a picture of the first side of the battery cell 10 and send the captured image information to the processing unit to inspect the appearance of the first side of the battery cell 10, and there is no need to set up a separate inspection station to perform appearance inspection on the first side of the battery cell 10.

[0106] The above embodiments are only to illustrate the basic principles and characteristics of the present application. The present application is not limited by the above examples. Without departing from the spirit and scope of the present application, the present application may be subject to various changes and modifications, which are within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. A battery cell flip detection device, wherein the battery cell comprises a battery cell body and two tabs arranged on the battery cell body, characterized in that: The battery cell flip detection device comprises a conveying mechanism, a flipping mechanism and a detection mechanism, wherein: A testing station is arranged on the conveying path of the conveying mechanism, and the conveying mechanism is configured to convey the battery cell to be tested to the testing station along a first direction, with the first surface of the battery cell at the testing station facing upward; The flipping mechanism is arranged at the inspection station and located at the side of the conveying mechanism, and the flipping mechanism is configured to pick up the battery cell at the inspection station and lift the picked-up battery cell to the inspection position and then flip it 180° so that the second side of the battery cell faces upward; The detection mechanism is disposed at the detection station, and is configured to detect the appearance of the battery cell body and the tabs of the battery cell at the detection position and to detect the number of layers of the tabs of the battery cell at the detection position.

2. The battery cell flip detection device according to claim 1, characterized in that: The flip mechanism comprises a base frame, a lifting drive member, a lifting member, a flip drive member, a flip seat and a clamping assembly, wherein: The base frame is fixedly mounted on the side of the conveying mechanism, the lifting member is escalably mounted on the base frame, the driving end of the lifting member is connected to the lifting member, and the lifting member is configured to drive the lifting member to move upward and downward; The fixed end of the flip driving member is mounted on the lifting member, the driving end of the flip driving member is connected to the flip seat, and the flip driving member is configured to drive the flip seat to flip at a preset angle; The clamping assembly is installed on the flip seat, and the clamping assembly is configured to clamp or release the battery core.

3. The battery cell flip detection device according to claim 2, characterized in that: Two backlight sources are fixedly installed on the flip seat at intervals, each of the backlight sources corresponds to a pole ear of the battery cell, and the two pole ears of the battery cell after flipping are respectively located directly above the two backlight sources. The backlight sources are configured to provide fill light when the detection mechanism detects the appearance of the pole ears of the battery cell.

4. The battery cell flip detection device according to claim 1, characterized in that: The detection mechanism includes a first detection component, two sets of second detection components, two sets of third detection components and two sets of fourth detection components, wherein: The first detection component is disposed above the detection position, and is configured to take a photo of the second surface of the battery cell at the detection position, so as to cooperate with the processing unit to perform appearance detection on the second surface of the battery cell; The two sets of second detection components are arranged at intervals on both sides of the detection position along the second direction, each set of the second detection components corresponds to an end face of the battery cell at the detection position in the second direction, and the two sets of second detection components are configured to take photos of the two end faces of the battery cell at the detection position in the second direction respectively, so as to cooperate with the processing unit to perform appearance inspection on the two end faces of the battery cell in the second direction; The two sets of third detection components are arranged above the detection position at intervals, each set of the third detection components corresponds to a tab of the battery cell at the detection position, and the two sets of third detection components are configured to respectively take photos of the top surfaces of the two tabs of the battery cell at the detection position, so as to cooperate with the processing unit to perform appearance inspection on the two tabs of the battery cell; The two sets of fourth detection components are arranged at intervals at the detection position, and each set of the fourth detection components corresponds to a pole ear of the battery cell at the detection position. The two sets of fourth detection components are configured to respectively take pictures of one side of the two pole ears of the battery cell at the detection position, so as to cooperate with the processing unit to detect the number of layers of the two pole ears of the battery cell.

5. The battery cell flip detection device according to claim 4, characterized in that: The battery core is a laminated battery core, the two tabs are respectively arranged at two ends of the battery core body in the second direction, and the two sets of fourth detection components are arranged at intervals along the second direction; Alternatively, the battery cell is a wound battery cell, the two tabs are spaced apart at one end of the battery cell body in the second direction, and the two sets of fourth detection components are spaced apart along the first direction.

6. The battery cell flip detection device according to claim 5, characterized in that: The first detection component is further configured to take a photo of the first side of the battery cell before the flipping mechanism flips the battery cell, so as to cooperate with the processing unit to perform appearance detection on the first side of the battery cell; The first detection assembly includes a first base, at least one first camera and two first bar-shaped light sources, wherein: The first base is fixedly mounted above the detection position, the first camera is fixedly mounted on the first base, the shooting end of the at least one first camera is vertically downward and the shooting range covers the first surface or the second surface of the battery cell facing upward, the two first strip-shaped light sources are spaced apart on both sides of the first base along the first direction, and the first strip-shaped light sources extend along the second direction; The second detection assembly includes a second base, at least one second camera and a second bar light source, wherein: The second base is fixedly mounted on one side of the detection position, the second camera is fixedly mounted on the second base, the shooting end of the at least one second camera is horizontally facing the battery cell and the shooting range covers an end surface of the battery cell in the second direction, the second strip light source is mounted on the second base and is located obliquely above the second camera close to the battery cell, and the second strip light source extends along the first direction.

7. The battery cell flip detection device according to claim 5, characterized in that: The third detection assembly includes a third base and a third camera, wherein the third base is fixed above the detection position, and the third camera is fixedly mounted on the third base, and the shooting end of the third camera is vertically downward and the shooting range covers the top surface of one pole ear of the corresponding battery cell; The fourth detection component includes a fourth base, a fourth camera and an annular light source. The fourth base is fixedly installed on one side of the detection position, the fourth camera is fixedly installed on the bottom surface of the fourth base, the shooting end of the fourth camera is horizontally facing the side of one pole ear of the battery cell, and the annular light source is fixedly installed on the shooting path of the fourth camera.

8. The battery cell flip detection device according to claim 1, characterized in that: The battery cell flip detection device further includes a plurality of battery cell jigs, wherein the battery cell jigs are configured to carry and position the battery cells, and the conveying mechanism is configured to carry and convey the battery cell jigs to the detection station along a first direction, so that the battery cells on the battery cell jigs are moved to the detection station; The conveying mechanism is provided with two sets of limit assemblies at the detection station, the two sets of limit assemblies are arranged at intervals along the first direction, the limit assemblies include a limit driving member and a limit member, wherein: the limit member is rotatably mounted on the conveying mechanism, the driving end of the limit driving member is connected to the limit member, and the limit driving member is configured to drive the limit member to rotate so that the limit member switches to a limit state or an avoidance state; The limit driving members of the two sets of the limit assemblies drive the corresponding limit members to rotate upward to a limit state, so that the two limit members respectively abut against the two sides of the battery cell fixture at the detection station in the first direction, thereby positioning the battery cell fixture at the detection station; The limit driving parts of the two sets of the limit assemblies drive the corresponding limit parts to rotate downward to an avoidance state, so that the two limit parts move below the bottom surface of the battery cell tooling, thereby avoiding the movement of the tested battery cell out of the testing station and the movement of the next battery cell to be tested into the testing station.

9. The battery cell flip detection device according to claim 1, characterized in that: The conveying mechanism is the first conveying line of the battery cell production line of the battery cell manufacturer. The first conveying line is configured to receive the battery cells of the previous process on the battery cell production line and convey the received battery cells along the first direction to the inspection station. The first conveying line is also configured to convey the battery cells after inspection at the inspection station along the first direction to the next process of the battery cell production line.

10. The battery cell flip detection device according to claim 1, characterized in that: The conveying mechanism is a second conveyor line on the first conveyor line of the battery cell production line connected to the battery cell manufacturer, the first conveyor line is configured to receive the battery cells of the previous process on the battery cell production line and convey the received battery cells to the transfer station along the first direction, the second conveyor line is configured to receive the battery cells at the transfer station and convey the received battery cells to the inspection station for inspection, the second conveyor line is also configured to convey the battery cells inspected at the inspection station to the first conveyor line, and the first conveyor line is also configured to convey the received inspected battery cells to the next process of the battery cell production line along the first direction.

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