Battery cell detection system and detection method thereof

Abstract

The embodiment of the invention provides a battery cell detection system and a detection method thereof. The battery cell detection system comprises a feeding device, a first detection device, a second detection device, a sorting device and a discharging device which are sequentially arranged in the conveying direction. The feeding device is used for transferring a tray bearing a battery cell to the first detection device; the first detection device is used for detecting the battery cell and generating a first detection sub-result; the second detection device is used for detecting the battery cell and generating a second detection sub-result; the sorting device is used for sorting the abnormal battery cells to a first target area; and the discharging device is used for transferring the normal battery cell to a second target area. According to the battery cell detection system, automatic operation of the whole detection work of feeding, detection, sorting and discharging is achieved through cooperation of all the devices, the battery cells are comprehensively detected through the first detection device and the second detection device, and the detection efficiency and detection accuracy of the battery cell detection system can be effectively improved.

Description

Technical Field

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

[0002] The battery cell is an important component inside the battery. The quality of the battery cell largely determines the quality of the battery. The quality of the battery cell needs to be tested before assembly.

[0003] In the related art, multiple links of the battery cell detection system require human participation. For example, the placement and picking of battery cells and the sorting of unqualified battery cells all require manual operation. Due to the uncontrollability of manual operation, the placement position and delivery angle of the battery cells may affect the detection results, resulting in the accuracy and stability of the detection results being unreliable. In addition, multiple links require manual operation, and the detection efficiency is low. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a battery cell detection system and a detection method thereof, which are used to solve the problems of low detection efficiency and poor detection accuracy in the existing detection system.

[0005] In a first aspect, an embodiment of the present invention provides a battery cell detection system, comprising:

[0006] A loading device, a first detection device, a second detection device, a sorting device and a unloading device are sequentially arranged along the conveying direction;

[0007] The loading device is used to transfer the tray carrying the battery cells to the first inlet end of the first detection device;

[0008] The first detection device is used to detect the battery cell and generate a first detection sub-result;

[0009] The second detection device is used to detect the battery cell and generate a second detection sub-result;

[0010] The sorting device is used to sort abnormal cells to a first target area according to the first detection sub-result and the second detection sub-result;

[0011] The unloading device is used to transport the normal battery cells after inspection to the second target area.

[0012] According to an embodiment of the present invention, it also includes: a posture adjustment device;

[0013] The posture adjustment device is arranged at the first inlet end of the first detection device or the second inlet end of the second detection device;

[0014] The posture adjustment device is used to adjust the tray to a preset posture so that the target detection position of the battery cell is opposite to the detection end of the first detection device, or the target detection position of the battery cell is opposite to the detection end of the second detection device.

[0015] According to an embodiment of the present invention, it also includes: a first transfer device, a second transfer device and a first turning conveyor line body;

[0016] The first turning conveyor line is arranged between the first outlet end of the first detection device and the second inlet end of the second detection device;

[0017] The first transfer device is disposed at the first outlet end, and is used to transfer the pallet at the first outlet end to the first end of the first turning conveyor line body;

[0018] The second transfer device is disposed at the second end of the first turning conveyor line body, and is used for transferring the tray to the second entrance end.

[0019] According to an embodiment of the present invention, it further comprises: a third transfer device and a second turning conveyor line body;

[0020] The sorting device is arranged in the conveying direction of the sorting conveying line, and the sorting conveying line has a third end close to the second detection device and a fourth end far away from the second detection device;

[0021] The second turning conveyor line is disposed between the fourth end and the first inlet end, and a conveying direction of the second turning conveyor line is parallel to a conveying direction of the first turning conveyor line;

[0022] The third transfer device is arranged at the fourth end, and the third transfer device is used to transfer the pallet at the fourth end to the second turning conveyor line, and the second turning conveyor line is used to transport the pallet carrying normal battery cells, the empty pallet and the pallet carrying the battery cells to be tested.

[0023] According to an embodiment of the present invention, it also includes: a feeding conveying line body;

[0024] The loading conveyor line is arranged on one side of the second turning conveyor line, and the loading conveyor line is used to convey the battery cell to be tested;

[0025] The loading device is used to place the battery cells to be tested on the loading conveyor line body on the unloaded tray on the second turning conveyor line body, and the second turning conveyor line body is used to transport the tray carrying the battery cells to be tested to the first entrance end.

[0026] According to an embodiment of the present invention, it also includes: a material unloading conveying line body;

[0027] The unloading conveyor line is arranged on one side of the second turning conveyor line, and the unloading conveyor line is used to convey the normal battery cells after detection;

[0028] The unloading device is used to separate the normal battery cells conveyed by the sorting conveying line to the second turning conveying line from the tray, and place the normal battery cells on the unloading conveying line.

[0029] In a second aspect, an embodiment of the present invention provides a detection method of a battery cell detection system, comprising:

[0030] Based on the loading signal, the battery cell to be tested is transferred to the first detection device;

[0031] Based on the first detection signal, the battery cell is detected by the first detection device to obtain a first detection sub-result;

[0032] transporting the battery cell to be tested to a second testing device;

[0033] Based on the second detection signal, the battery cell is detected by the second detection device to obtain a second detection sub-result;

[0034] Based on the first detection sub-result and the second detection sub-result, determining whether the battery cell is an abnormal battery cell or a normal battery cell;

[0035] The abnormal cells are sorted to a first target area, and the normal cells are transported to a second target area.

[0036] According to an embodiment of the present invention, before the testing of the battery cell by the first testing device, the method further includes:

[0037] Based on the posture adjustment signal, adjusting the tray carrying the battery cells to a preset posture so that the target detection position of the battery cells is opposite to the detection end of the first detection device; or

[0038] Before the second detection device detects the battery cell, the method further includes:

[0039] Based on the posture adjustment signal, the tray carrying the battery cells is adjusted to a preset posture so that a target detection position of the battery cells is opposite to a detection end of the second detection device.

[0040] According to an embodiment of the present invention, the step of transporting the battery cell to be tested to the first detection device includes:

[0041] The battery cell to be tested is transported to a position corresponding to the loading device along the loading conveyor line;

[0042] Based on the loading signal, the battery cell is placed on an empty tray on the second turning conveyor line;

[0043] The tray carrying the battery cells is conveyed to the first entrance end of the first detection device through the second turning conveyor line.

[0044] According to an embodiment of the present invention, transporting the battery cell to be tested to a second detection device includes:

[0045] Based on the first transfer signal, adjusting the tray from a preset posture to a target posture;

[0046] Transferring the pallet adjusted to the target posture to the first turning conveyor line;

[0047] Based on the second transfer signal, the pallet on the first turning conveyor line is transferred to the second entrance end of the second detection device.

[0048] According to an embodiment of the present invention, sorting the abnormal battery cells to a first target area and transporting the normal battery cells to a second target area includes:

[0049] Determine that the battery cell is an abnormal battery cell, and sort the abnormal battery cell to the first target area by a sorting device based on a sorting signal; or

[0050] Determining that the battery cell is a normal battery cell, and transferring the normal battery cell to a second steering conveyor line based on a third transfer signal;

[0051] Based on the unloading signal, the normal battery cell is transported to the second target area by the unloading device.

[0052] The battery cell detection system and detection method provided by the embodiments of the present invention can at least achieve the following technical effects: a loading device, a first detection device, a second detection device, a sorting device and a unloading device are arranged in sequence along the conveying direction of the conveyor line, and the entire detection operation of loading, detection, sorting and unloading is automated through the coordinated cooperation between the various devices. The battery cells are comprehensively detected by the first detection device and the second detection device, which can effectively improve the detection efficiency and detection accuracy of the battery cell detection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0054] Figure 1 A schematic diagram of the structure of a battery cell detection system according to an embodiment of the present invention is shown;

[0055] Figure 2 A schematic diagram schematically shows a second detection device and a first detection device arranged side by side according to an embodiment of the present invention;

[0056] Figure 3 A flow chart schematically shows a detection method of a battery cell detection system according to an embodiment of the present invention;

[0057] Reference numerals:

[0058] 10: loading device; 20: first detection device; 21: first conveying line; 30: second detection device; 31: second conveying line; 40: sorting device; 50: unloading device; 60: posture adjustment device; 70: first transfer device; 80: second transfer device; 90: third transfer device;

[0059] 100: first turning conveyor line; 200: sorting conveyor line; 300: second turning conveyor line; 400: loading conveyor line; 500: unloading conveyor line; 600: battery cell. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 indirectly connected 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.

[0063] Combine the following Figure 1 and Figure 2 A battery cell detection system according to an embodiment of the present invention is described.

[0064] like Figure 1As shown, the battery cell detection system provided by the embodiment of the present invention includes: a loading device 10, a first detection device 20, a second detection device 30, a sorting device 40 and a unloading device 50 arranged in sequence along the conveying direction.

[0065] The loading device 10 is used to transfer the tray carrying the battery cells 600 to the first entrance end of the first detection device 20; the first detection device 20 is used to detect the battery cells 600 and generate a first detection sub-result; the second detection device 30 is used to detect the battery cells 600 and generate a second detection sub-result; the sorting device 40 is used to sort the abnormal battery cells 600 to the first target area according to the first detection sub-result and the second detection sub-result; the unloading device 50 is used to transfer the normal battery cells 600 after detection to the second target area.

[0066] Specifically, the battery cell detection system includes a conveyor line body and a loading device 10, a first detection device 20, a second detection device 30, a sorting device 40 and a unloading device 50 which are sequentially arranged along the conveying direction of the conveyor line body.

[0067] The loading device 10 is arranged at the loading station, and the battery cell 600 to be tested can be transferred to the loading station by the transfer device. A loading conveyor line 400 can also be arranged, and the battery cell 600 to be tested moves to the loading station along with the loading conveyor line 400. A tray conveyor line is arranged on one side of the loading conveyor line 400, and the tray conveyor line is used to convey an empty tray.

[0068] For example, the battery cell 600 to be inspected moves to the loading station along with the loading conveyor line 400, and the loading device 10 can move linearly in the horizontal and vertical directions. The loading device 10 includes a first driving part and a first clamping part, the first clamping part includes two clamping claws that can move away from or close to each other, the first driving part drives the two clamping claws to clamp the battery cell 600 on the loading conveyor line 400, and places the battery cell 600 on the empty tray on the tray conveyor line, the tray presses the battery cell 600, and fixes the battery cell 600 on the tray.

[0069] An operator may apply external force to the pallet so that the pallet presses the battery cells 600 ; or the loading device 10 may apply external force to the pallet so that the pallet presses the battery cells 600 , and the pallet carrying the battery cells 600 is further transported to the first entrance end of the first detection device 20 along the pallet conveyor line.

[0070] The battery cells 600 are grabbed from the loading conveyor line 400 and placed on the tray on the tray conveyor line. The entire process is operated by the loading device 10 without the participation of operators.

[0071] The first detection device 20 includes a first conveyor body 21 and a first detection channel. The first conveyor body 21 includes a first inlet end and a first outlet end opposite to each other. The tray carrying the battery cell 600 is transferred to the first inlet end and enters the first detection channel with the movement of the first conveyor body 21. A first detection mechanism is arranged in the first detection channel. The first detection mechanism includes a first transmitting unit and a first receiving unit. The first transmitting unit and the first receiving unit are located on opposite sides of the battery cell 600. The first transmitting unit and the first receiving unit synchronously perform a 360-degree rotation movement to perform a spiral scan on the battery cell 600. The first detection device 20 can be a CT detection device. The first transmitting unit is a CT optical machine, and the first receiving unit is a CT detector.

[0072] The first detection device 20 is a CT detection device, which collects a first scan image of the battery cell 600 through the CT detection device, and obtains a first detection sub-result according to the first scan image. The first detection device 20 can detect various defects of the battery cell 600, for example, whether the pole pieces in the battery cell 600 are aligned, whether the pole pieces are folded or missing, whether the pole pieces have welding defects, etc. The first detection device 20 mainly detects the alignment of the pole pieces of the battery cell 600.

[0073] After the battery cell 600 completes the detection in the first detection channel, it moves to the first outlet end along with the movement of the first conveying line 21, and the battery cell 600 is further conveyed to the second detection device 30 for a second detection.

[0074] The second detection device 30 includes a second conveyor line 31 and a second detection channel, and the second conveyor line 31 includes a second inlet end and a second outlet end opposite to each other. A second detection mechanism is arranged in the second detection channel, and the second detection mechanism includes a second transmitting unit and a second receiving unit, and the second transmitting unit and the second receiving unit are located on opposite sides of the battery cell 600. For example, in the vertical direction, the second transmitting unit is located above the battery cell 600, and the second receiving unit is located below the battery cell 600, so as to scan the battery cell 600. The second detection device 30 can be a DR detection device, the second transmitting unit is a DR optical machine, and the second receiving unit is a DR detector.

[0075] Alternatively, if Figure 2 As shown, the second detection device 30 and the first detection device 20 are arranged side by side. In the case of the side by side arrangement, the second inlet end of the second detection device 30 is opposite to the first outlet end of the first detection device 20.

[0076] Alternatively, if Figure 1As shown, the second detection device 30 is arranged in parallel with the first detection device 20, and the first turning conveyor line body 100 is arranged between the second detection device 30 and the first detection device 20. The first turning conveyor line body 100 has a first end and a second end opposite to each other, the first end is opposite to the first outlet end of the first detection device 20, and the second end is opposite to the second inlet end of the second detection device 30, and the tray located at the first outlet end moves to the second inlet end through the first turning conveyor line body 100.

[0077] The second detection device 30 is a DR detection device, which collects a second scan image of the battery cell 600 through the DR detection device, and obtains a second detection sub-result based on the second scan image. The second detection device 30 can detect impurities and internal defects in the battery cell 600, for example: whether the battery cell 600 contains impurities and foreign matter, whether the pole piece of the battery cell 600 is wrinkled, folded or damaged, etc. The second detection device 30 mainly detects the internal defects of the battery cell 600.

[0078] It can be understood that the first detection device 20 and the second detection device 30 can be interchanged, that is, the battery cell 600 is first detected by the CT detection equipment and then detected by the DR detection equipment; or the battery cell 600 is first detected by the DR detection equipment and then detected by the CT detection equipment.

[0079] After the first detection device 20 detects the battery cell 600, it generates a first scanning image, and obtains a first detection sub-result based on the first scanning image; after the second detection device 30 detects the battery cell 600, it generates a second scanning image, and obtains a second detection sub-result based on the second scanning image. The battery cell 600 is judged to be an abnormal battery cell or a normal battery cell based on the first detection sub-result and the second detection sub-result.

[0080] The battery cells 600 detected by the first detection device 20 and the second detection device 30 are transported to the sorting device 40 , and the sorting device 40 sorts the battery cells 600 according to the determination results.

[0081] If it is determined that the battery cell 600 is an abnormal battery cell, the sorting device 40 sorts the abnormal battery cell to a first target area, which may be a defective product collection bin. The sorting device 40 grabs the abnormal battery cell on the conveyor line and places the abnormal battery cell into the defective product collection bin.

[0082] Furthermore, the abnormal battery cells are placed into the defective product collection bin along with the tray, and the sorting device 40 will add an empty tray to the conveyor line.

[0083] If the battery cell 600 is determined to be a normal battery cell, the normal battery cell is further transported to the unloading station, and the unloading device 50 is arranged at the unloading station. The unloading device 50 has a similar structure to the loading device 10, and the unloading device 50 can move linearly in the horizontal direction and the vertical direction. The unloading device 50 includes a second driving part and a second clamping part, and the second clamping part includes two clamping claws that can move away from or close to each other.

[0084] It is understandable that the unloading device 50 can apply an unlocking action to the tray, the tray releases the normal battery cell, and the second driving unit drives the two clamps to clamp the separated normal battery cell and place the normal battery cell in the second target area. The second target area can be the unloading conveyor line 500, and the normal battery cell is conveyed to the next station along with the unloading conveyor line 500 to perform the next process.

[0085] The manipulator of the loading device 10 and the manipulator of the unloading device 50 may be a truss manipulator or a multi-axis manipulator.

[0086] The following is an explanation of the detection process of the battery cell detection system.

[0087] The battery cell 600 to be inspected moves to the loading station, and the loading device 10 places the battery cell 600 to be inspected on the tray. After the tray presses the battery cell 600, the tray carrying the battery cell 600 is transported to the first inspection device 20. The first inspection device 20 inspects the battery cell 600 and generates a first scanning image, and obtains a first detection sub-result according to the first scanning image. The battery cell 600 inspected by the first inspection device 20 is transported to the second inspection device 30, and the second inspection device 30 inspects the battery cell 600 and generates a second scanning image, and obtains a second detection sub-result according to the second scanning image. Thereafter, the battery cell 600 is transported to the sorting device 40, and the sorting device 40 sorts the battery cell 600 according to the first detection sub-result and the second detection sub-result. If the battery cell 600 is determined to be an abnormal battery cell, the sorting device 40 transfers the abnormal battery cell to the first target area; if the battery cell 600 is determined to be a normal battery cell, the normal battery cell is transported to the unloading station. The unloading device 50 applies an unlocking action to the tray, the tray releases the battery cell 600, and the unloading device 50 further places the normal battery cell on the unloading conveyor line 500, and the normal battery cell is conveyed to the next station along with the unloading conveyor line 500 for subsequent process operations. The empty tray is further conveyed to the loading station to carry the next battery cell 600 to be tested, so as to realize the recycling of the tray.

[0088] The loading device 10 is used to fix the battery cell 600 to be tested and the tray, and the battery cell 600 is transferred to the first detection device 20; the first detection device 20 and the second detection device 30 are used to comprehensively detect the alignment of the pole pieces of the battery cell 600 and the internal conditions of the battery cell 600; the sorting device 40 sorts the abnormal battery cells to the first target area according to the first detection sub-result and the second detection sub-result; the unloading device 50 is used to separate the normal battery cells from the tray, and transfer the normal battery cells to the second target area. During the entire detection process, the participation of the operating personnel is greatly reduced. Through the coordination and cooperation between the various devices, the entire detection operation of loading, testing, sorting, and unloading is automated, which can effectively improve the detection efficiency and accuracy.

[0089] In an embodiment of the present invention, a loading device 10, a first detection device 20, a second detection device 30, a sorting device 40 and a unloading device 50 are sequentially arranged along the conveying direction of the conveyor line. Through the coordinated cooperation between the various devices, the entire detection operation of loading, detecting, sorting and unloading is automated. By performing a comprehensive detection of the battery cell 600 by the first detection device 20 and the second detection device 30, the detection efficiency and detection accuracy of the battery cell detection system can be effectively improved.

[0090] like Figure 1 As shown, in an optional embodiment, the battery cell detection system also includes a posture adjustment device 60; the posture adjustment device 60 is arranged at the first entrance end of the first detection device 20 or the second entrance end of the second detection device 30; the posture adjustment device 60 is used to adjust the tray to a preset posture so that the target detection position of the battery cell 600 is opposite to the detection end of the first detection device 20, or the target detection position of the battery cell 600 is opposite to the detection end of the second detection device 30.

[0091] Specifically, one of the first detection device 20 and the second detection device 30 is used to detect the alignment of the pole pieces of the battery cell 600 . For example, the first detection device 20 is a CT detection device, and the first detection device 20 detects the alignment of the pole pieces of the battery cell 600 .

[0092] The posture adjustment device 60 is disposed at the first entrance end of the first detection device 20. The manipulator of the posture adjustment device 60 can move and rotate in three mutually perpendicular directions, and adjust the tray to a preset posture through linear movement and rotation, that is, adjust the placement angle of the tray. In the preset posture, the target detection position of the battery cell 600 is opposite to the detection end of the first detection device 20, and the target detection position of the battery cell 600 is the diagonal position of the battery cell 600.

[0093] Taking the battery cell 600 as a rectangular battery cell as an example, the battery cell 600 has a length direction and a width direction. Along one circumference of the battery cell 600, the four end corner positions of the battery cell 600 are defined as a first endpoint, a second endpoint, a third endpoint and a fourth endpoint, respectively. The first endpoint and the third endpoint are located on the first diagonal line, and the second endpoint and the fourth endpoint are located on the second diagonal line.

[0094] The first endpoint and the third endpoint on the first diagonal line are target detection positions, and the first endpoint and the third endpoint are both located on the center line of the first detection device 20 through the adjustment action of the posture adjustment device 60. It can be understood that the second endpoint and the fourth endpoint can also be located on the center line of the first detection device 20. The placement angle of the tray is the angle formed between the center plane of the tray and the center line of the first detection device 20. Under the preset posture, the placement angle of the tray is defined as the first placement angle.

[0095] The placement angle of the tray is adjusted by the posture adjustment device 60 so that the target detection position of the battery cell 600 can be opposite to the detection end, so as to accurately detect the alignment of the pole pieces in the battery cell 600. It is understandable that the first placement angle of the tray is different for battery cells 600 of different sizes, and the first placement angle of the tray can be 20 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees, etc., and it is ensured that the endpoints on the diagonal of the battery cell 600 are located on the center line of the first detection device 20.

[0096] By individually controlling the posture adjustment device 60 and adjusting the first placement angle according to the type of the battery cell 600 , the detection requirements of battery cells of different sizes and specifications can be met, and the adaptability is strong.

[0097] If both the first detection device 20 and the second detection device 30 are CT detection devices, one posture adjustment device 60 is arranged at the first entrance end of the first detection device 20, and the other posture adjustment device 60 is arranged at the second entrance end of the second detection device 30. After the detection of the first and third endpoints of the battery cell 600 is completed at the first detection device 20, the battery cell 600 is transported to the second entrance end of the second detection device 30. The posture adjustment device 60 at the second entrance end of the second detection device 30 adjusts the placement angle of the tray with reference to the above adjustment method, so that the second and fourth endpoints of the second diagonal line of the battery cell 600 are located on the center line of the second detection device 30, thereby completing the detection of the second and fourth endpoints of the battery cell 600 through the second detection device 30.

[0098] The placement angle of the tray is adjusted by the posture adjustment device 60. Compared with manual adjustment of the placement angle of the tray, the posture adjustment device 60 can adjust the placement angle more quickly and accurately, avoiding errors and uncontrollability caused by manual operation, which is beneficial to improving the accuracy and reliability of the detection results.

[0099] In an embodiment of the present invention, the posture adjustment device 60 is arranged at the first entrance end of the first detection device 20 or the second entrance end of the second detection device 30. The placement angle of the tray is adjusted by the posture adjustment device 60 so that the target detection position of the battery cell 600 is opposite to the detection end, which is beneficial to ensure the accuracy of the placement position of the battery cell 600, and further helps to improve the accuracy and reliability of the detection results.

[0100] like Figure 1 As shown, in an optional embodiment, the battery cell detection system further includes a first transfer device 70 , a second transfer device 80 and a first turning conveyor line 100 .

[0101] The first turning conveyor line 100 is arranged between the first outlet end of the first detection device 20 and the second inlet end of the second detection device 30; the first transfer device 70 is arranged at the first outlet end, and the first transfer device 70 is used to transfer the pallet at the first outlet end to the first end of the first turning conveyor line 100; the second transfer device 80 is arranged at the second end of the first turning conveyor line 100, and is used to transfer the pallet to the second inlet end.

[0102] Specifically, the first detection device 20 and the second detection device 30 are arranged in parallel with each other, the first detection device 20 includes a first conveying line body 21, and the second detection device 30 includes a second conveying line body 31. The conveying direction of the first conveying line body 21 and the conveying direction of the second conveying line body 31 are parallel and opposite to each other.

[0103] The first turning conveyor line 100 is located between the first outlet end of the first detection device 20 and the second inlet end of the second detection device 30. The conveying direction of the first turning conveyor line 100 is perpendicular to the conveying direction of the first conveyor line 21, and the conveying direction of the first turning conveyor line 100 is perpendicular to the conveying direction of the second conveyor line 31.

[0104] The first turning conveyor line body 100 has a first end and a second end opposite to each other, and the first transfer device 70 is located at the first outlet end of the first detection device 20. The first transfer device 70 can be a push rod transfer device, which includes a first push rod and a second push rod parallel to each other, and the first push rod and the second push rod have different pushing strokes.

[0105] The battery cell 600 that has completed the inspection in the first inspection channel moves to the first exit end along with the movement of the first conveyor line 21. At this time, the tray is still in a preset posture, and the placement angle of the tray is the first placement angle, which can be 30 degrees.

[0106] The first transfer device 70 adjusts the pallet from a preset posture to a target posture. The first push rod and the second push rod of the first transfer device 70 move toward the direction of the pallet, and the two push rods apply different degrees of thrust to the pallet, adjusting the pallet from the first placement angle to the second placement angle, and pushing the pallet from the first outlet end to the first end of the first turning conveyor line body 100. At the second placement angle, the center plane of the pallet is parallel to the center line of the first conveyor line body 21, and the second placement angle is 0 degrees.

[0107] The tray carrying the battery cell 600 moves to the second end along with the first turning conveyor line 100, and the second transfer device 80 is arranged at the second end of the first turning conveyor line 100. The second transfer device 80 can be a lifting and transferring device, and the lifting and transferring device includes a lifting mechanism and a rotating mechanism. The tray moves to the second end, and the tray is lifted to the target height by the lifting mechanism. As the rotating mechanism rotates, the tray further moves to the second entrance end of the second detection device 30.

[0108] It can be understood that the rotation direction of the rotating mechanism is perpendicular to the rotation direction of the first turning conveyor line body 100, so as to adjust the movement direction of the tray.

[0109] The first transfer device 70 is used to adjust the tray placement angle from the first placement angle to the second placement angle. In addition, the first transfer device 70 transfers the tray to the first turning conveyor line 100. The second transfer device 80 transfers the tray moved to the second end to the second entrance end of the second detection device 30.

[0110] A U-shaped conveying direction is formed among the first conveying line body 21 , the first turning conveying line body 100 and the second conveying line body 31 , which is beneficial to the compactness of the overall structure of the battery cell detection system and to reducing the occupied space of the battery cell detection system.

[0111] The first transfer device 70 is used to adjust the tray placement angle, and the first transfer device 70 and the second transfer device 80 are used to adjust the tray conveying direction without the need for operator involvement, which is beneficial to the intelligent operation of the battery cell detection system.

[0112] like Figure 1 As shown, in an optional embodiment, the battery cell detection system further includes a third transfer device 90 and a second turning conveyor line 300 .

[0113] The sorting device 40 is arranged in the conveying direction of the sorting conveyor line 200, and the sorting conveyor line 200 has a third end close to the second detection device 30 and a fourth end away from the second detection device 30; the second turning conveyor line 300 is arranged between the fourth end and the first entrance end, and the conveying direction of the second turning conveyor line 300 is parallel to the conveying direction of the first turning conveyor line 100; the third transfer device 90 is arranged at the fourth end, and the third transfer device 90 is used to transfer the pallet at the fourth end to the second turning conveyor line 300, and the second turning conveyor line 300 is used to transport pallets carrying normal battery cells, empty pallets and pallets carrying battery cells to be tested.

[0114] Specifically, the sorting device 40 is arranged in the conveying direction of the sorting conveying line 200 , and the sorting conveying line 200 has a third end and a fourth end opposite to each other, and the third end is opposite to the second outlet end of the second detection device 30 .

[0115] The second turning conveyor line body 300 is arranged in parallel with the first turning conveyor line body 100 at intervals. The second turning conveyor line body 300 has a fifth end and a sixth end opposite to each other. The fifth end is opposite to the fourth end of the sorting conveyor line body 200, and the sixth end is opposite to the first inlet end of the first detection device 20.

[0116] Thus, the first conveyor line 21, the first turning conveyor line 100, the second conveyor line 31, the sorting conveyor line 200 and the second turning conveyor line 300 form a U-shaped detection conveyor line. The first conveyor line 21, the first turning conveyor line 100, the second conveyor line 31, the sorting conveyor line 200 and the second turning conveyor line 300 can be a double-speed chain conveying structure, an O-belt conveying structure, etc.

[0117] The third transfer device 90 is arranged at the fourth end of the sorting conveyor line 200. The third transfer device 90 can be a lifting and transferring device. The lifting and transferring device includes a lifting mechanism and a rotating mechanism. The pallet is lifted to the target height by the lifting mechanism, and the pallet is transferred to the second turning conveyor line 300 by the rotating mechanism.

[0118] The tray carrying normal battery cells moves along the second turning conveyor line 300 to the unloading position corresponding to the unloading device 50. The unloading device 50 applies an unlocking action to the tray so that the tray releases the normal battery cells. After that, the unloading device 50 transfers the normal battery cells to the unloading conveyor line 500 for subsequent operations.

[0119] After being separated from the normal battery cells, the tray moves along with the second turning conveyor line 300 to the loading position corresponding to the loading device 10. The loading device 10 grabs the battery cells 600 to be tested on the loading conveyor line 400 and places the battery cells 600 on the tray. Through the locking action, the tray presses the battery cells 600. The tray carrying the battery cells 600 moves along with the second turning conveyor line 300 to the first entrance end of the first detection device 20.

[0120] The first conveyor line 21, the first turning conveyor line 100, the second conveyor line 31, the sorting conveyor line 200 and the second turning conveyor line 300 form a U-shaped detection conveyor line, and the loading device 10, the posture adjustment device 60, the first detection device 20, the first transfer device 70, the second transfer device 80, the sorting device 40, the third transfer device 90 and the unloading device 50 are arranged in sequence along the conveying direction of the detection conveyor line, which not only improves the structural compactness of the battery cell detection system, but also helps to save the occupied space of the battery cell detection system.

[0121] The tray moves along the conveying direction of the detection conveyor line, so that the tray can be recycled. By controlling the conveying speed of each conveyor line, multiple battery cells 600 can be inspected in sequence, which is beneficial to improving the inspection efficiency.

[0122] like Figure 1 As shown, in an optional embodiment, the battery cell detection system also includes a loading conveyor line 400; the loading conveyor line 400 is arranged on one side of the second turning conveyor line 300, and the loading conveyor line 400 is used to convey the battery cells 600 to be tested; the loading device 10 is used to place the battery cells 600 to be tested on the loading conveyor line 400 on the empty tray on the second turning conveyor line 300, and the second turning conveyor line 300 is used to transport the tray carrying the battery cells 600 to be tested to the first entrance end.

[0123] Specifically, the loading conveyor line 400 is arranged close to the second turning conveyor line 300, and the battery cell 600 to be inspected moves with the loading conveyor line 400 to the loading station.

[0124] The loading device 10 grabs the battery cells 600 on the loading conveyor line 400 and transfers the battery cells 600 to an unloaded tray on the second turning conveyor line 300. The tray carrying the battery cells 600 further moves to the first entrance end along with the second turning conveyor line 300.

[0125] By providing the feeding conveyor line 400 , the battery cell 600 to be inspected can be moved to the feeding work station along with the feeding conveyor line 400 , which is beneficial to further improve the intelligent operation of the battery cell inspection system.

[0126] like Figure 1As shown, in an optional embodiment, the battery cell detection system also includes a unloading conveyor line 500; the unloading conveyor line 500 is arranged on one side of the second turning conveyor line 300, and the unloading conveyor line 500 is used to convey normal battery cells after detection; the unloading device 50 is used to separate the normal battery cells transported from the sorting conveyor line 200 to the second turning conveyor line 300 from the tray, and place the normal battery cells on the unloading conveyor line 500.

[0127] Specifically, the unloading conveyor line 500 is arranged near the second turning conveyor line 300. The tray carrying the normal battery cell moves to the unloading station with the second turning conveyor line 300. At the unloading station, the tray releases the normal battery cell, and the unloading device 50 grabs the normal battery cell and transfers the normal battery cell to the unloading conveyor line 500. The normal battery cell further moves to the next station with the movement of the unloading conveyor line 500 for subsequent operation.

[0128] By providing the unloading conveyor line 500 , the normal battery cells after detection can be moved to the next workstation along with the unloading conveyor line 500 , which is beneficial to further improve the intelligent operation of the battery cell detection system.

[0129] like Figure 3 As shown, an embodiment of the present invention further provides a detection method of a battery cell detection system, the detection method comprising:

[0130] Step 101: Based on a loading signal, the battery cell 600 to be tested is transferred to the first detection device 20;

[0131] Step 102: Based on the first detection signal, the first detection device 20 detects the battery cell 600 to obtain a first detection sub-result;

[0132] Step 103: transporting the battery cell 600 to be tested to the second testing device 30;

[0133] Step 104: Based on the second detection signal, the second detection device 30 detects the battery cell 600 to obtain a second detection sub-result;

[0134] Step 105: Determine whether the battery cell 600 is an abnormal battery cell or a normal battery cell based on the first detection sub-result and the second detection sub-result;

[0135] Step 106: sorting abnormal cells to a first target area, and transporting normal cells to a second target area.

[0136] Specifically, the structure of the battery cell detection system is as described above and will not be repeated here. The loading device 10, the first detection device 20, the first transfer device 70, the second transfer device 80, the second detection device 30, the sorting device 40 and the unloading device 50 are arranged in sequence along the conveying direction of the detection conveyor line. Each device is connected to the controller for communication.

[0137] The loading device 10 receives the loading signal, and the loading device 10 transfers the battery cell 600 to be inspected to the first entrance end of the first inspection device 20. After adjusting the tray carrying the battery cell 600 to the first placement angle, the tray moves into the first inspection channel. The first inspection mechanism receives the first inspection signal, and detects the target inspection position of the battery cell 600 through the first inspection mechanism. A first scanning image is generated by spirally scanning the endpoints on the diagonal of the battery cell 600, and a first inspection sub-result is obtained from the first scanning image. The inspected battery cell 600 moves to the first exit end along with the first conveyor line 21.

[0138] The first transfer device 70 receives the first transfer signal, adjusts the tray carrying the battery cells 600 to the second placement angle, and transfers the battery cells 600 at the first outlet end to the first turning conveyor line 100, and the battery cells 600 move to the second end along with the first turning conveyor line 100. The second transfer device 80 receives the second transfer signal, and transfers the battery cells 600 at the second end to the second inlet end of the second detection device 30.

[0139] The tray carrying the battery cell 600 moves into the second detection channel, and the second detection mechanism receives the second detection signal, and the second detection mechanism detects the target detection position of the battery cell 600. A second scanning image is generated by performing a spiral scan on the battery cell 600, and a second detection sub-result is obtained from the second scanning image. The detected battery cell 600 moves from the second conveyor line 31 to the sorting conveyor line 200.

[0140] The detected battery cell 600 is determined to be a normal battery cell or an abnormal battery cell according to the first detection sub-result and the second detection sub-result. If the first detection sub-result is qualified or unqualified, and the second detection sub-result is qualified or unqualified, and both the first detection sub-result and the second detection sub-result are qualified, the battery cell 600 is determined to be a normal battery cell; if at least one of the first detection sub-result and the second detection sub-result is unqualified, the battery cell 600 is determined to be an abnormal battery cell.

[0141] The battery cell 600 is determined to be an abnormal battery cell, and the sorting device 40 receives a sorting signal. The sorting device 40 sorts the abnormal battery cell to a first target area, and the first target area may be a defective product collection bin.

[0142] It is determined that the battery cell 600 is a normal battery cell, and the sorting device 40 receives a release signal, and the tray carrying the normal battery cell moves to the unloading station.

[0143] The unloading device 50 receives the unloading signal, and then transfers the normal battery cells to the second target area for the next process.

[0144] During the entire inspection process, the involvement of operators is greatly reduced. Through the coordination between various devices, the entire inspection operation of loading, inspection, sorting, and unloading is automated. The first inspection device 20 detects the alignment of the pole pieces of the battery cell 600, and the second inspection device 30 detects the internal defects of the battery cell 600. The first inspection device 20 and the second inspection device 30 perform a comprehensive inspection on the battery cell 600. The above inspection method can effectively improve the inspection efficiency and accuracy.

[0145] In an optional embodiment, before the first detection device 20 detects the battery cell 600, the method further includes:

[0146] Based on the posture adjustment signal, the tray carrying the battery cells 600 is adjusted to a preset posture so that the target detection position of the battery cells 600 is opposite to the detection end of the first detection device 20; or

[0147] Before the second detection device 30 detects the battery cell 600, the method further includes:

[0148] Based on the posture adjustment signal, the tray carrying the battery cells 600 is adjusted to a preset posture so that the target detection position of the battery cells 600 is opposite to the detection end of the second detection device 30 .

[0149] Specifically, if the first detection device 20 is a CT detection device, the posture adjustment device 60 is arranged at the first inlet end of the first detection device 20 ; if the second detection device 30 is a CT detection device, the posture adjustment device 60 is arranged at the second inlet end of the second detection device 30 .

[0150] Taking the example of the posture adjustment device 60 being set at the first entrance end, the tray moves to the first entrance end, the posture adjustment device 60 receives the posture adjustment signal, and the posture adjustment device 60 adjusts the tray carrying the battery cell 600 to the first placement angle, so that the target detection position of the battery cell 600 can be opposite to the detection end of the first detection mechanism.

[0151] The manipulator of the posture adjustment device 60 can move and rotate in three mutually perpendicular directions, and adjust the tray to a preset posture through linear movement and rotation, so that the first and third endpoints on the diagonal of the battery cell 600 are located on the center line of the first detection device 20, or the second and fourth endpoints on the diagonal of the battery cell 600 are located on the center line of the first detection device 20. The first detection mechanism performs a spiral scan around the first and third endpoints to accurately detect the alignment of the pole pieces of the battery cell 600.

[0152] The placement angle of the tray is adjusted by the posture adjustment device 60. Compared with manual adjustment of the placement angle of the tray, the posture adjustment device 60 can adjust the placement angle more quickly and accurately, avoiding errors and uncontrollability caused by manual operation, which is beneficial to improving the accuracy and reliability of the detection results.

[0153] In an optional embodiment, the step of transporting the battery cell 600 to be tested to the first detection device 20 includes:

[0154] The battery cell 600 to be tested is transported to a position corresponding to the loading device 10 along the loading conveyor line 400;

[0155] Based on the loading signal, the battery cell 600 is placed on the unloaded tray on the second turning conveyor line 300;

[0156] The tray carrying the battery cells 600 is transported to the first entrance end of the first detection device 20 through the second turning conveyor line 300 .

[0157] Specifically, the first conveyor line 21, the first diverting conveyor line 100, the second conveyor line 31, the sorting conveyor line 200 and the second diverting conveyor line 300 form a U-shaped detection conveyor line. The feeding conveyor line 400 and the second diverting conveyor line 300 are parallel to each other.

[0158] The battery cell 600 to be inspected moves to the loading station along with the loading conveyor line 400. The loading device 10 receives the loading signal, grabs the battery cell 600 on the loading conveyor line 400, and places the battery cell 600 on the empty tray on the second turning conveyor line 300. The tray presses the battery cell 600, and the tray carrying the battery cell 600 moves to the first entrance end of the first inspection device 20 along with the second turning conveyor line 300.

[0159] Through the coordinated cooperation of the loading conveyor line 400, the second turning conveyor line 300 and the loading device 10, the tray carrying the battery cells 600 is transferred to the first entrance end, realizing the intelligent operation of the battery cell detection system.

[0160] In an optional embodiment, transporting the battery cell 600 to be tested to the second detection device 30 includes:

[0161] Based on the first transfer signal, adjusting the tray from a preset posture to a target posture;

[0162] Transferring the pallet adjusted to the target posture to the first turning conveyor line 100;

[0163] Based on the second transfer signal, the pallet on the first turning conveyor line 100 is transferred to the second entrance end of the second detection device 30 .

[0164] Specifically, after the battery cell 600 completes the detection in the first detection channel, it moves to the first exit end of the first detection device 20. At this time, the tray is still in a preset posture, and the tray is at a first placement angle, which may be 30 degrees.

[0165] Through the pushing action of the first push rod and the second push rod of the first transfer device 70, the tray is adjusted from the preset posture to the target posture. In the target posture, the tray is at a second placement angle, which is 0 degrees.

[0166] The pallet moves to the first exit end of the first detection device 20 , and the first transfer device 70 receives the first transfer signal. Through the pushing action of the first transfer device 70 , the pallet is adjusted from the first placement angle to the second placement angle, and the pallet is pushed onto the first turning conveyor line 100 .

[0167] The pallet moves to the second end along with the first turning conveyor line 100, and the second transfer device 80 receives the second transfer signal, changes the moving direction of the pallet through the lifting and rotating actions of the second transfer device 80, and transfers the pallet to the second entrance end of the second detection device 30.

[0168] The first transfer device 70 is used to adjust the tray placement angle, and the second transfer device 80 is used to adjust the tray movement direction, without the need for operator involvement, which is beneficial to the intelligent operation of the battery cell detection system.

[0169] In an optional embodiment, sorting abnormal battery cells to a first target area and transporting normal battery cells to a second target area includes:

[0170] Determine that the battery cell 600 is an abnormal battery cell, and sort the abnormal battery cell to a first target area through the sorting device 40 based on the sorting signal; or

[0171] Determine that the battery cell 600 is a normal battery cell, and transfer the normal battery cell to the second turning conveyor line 300 based on the third transfer signal;

[0172] Based on the unloading signal, the normal battery cells are transported to the second target area through the unloading device 50 .

[0173] Specifically, the battery cell 600 detected by the first detection device 20 and the second detection device 30 is moved to the sorting device 40. The battery cell 600 is determined to be a normal battery cell or an abnormal battery cell according to the first detection sub-result and the second detection sub-result.

[0174] The battery cell 600 is determined to be an abnormal battery cell, and the sorting device 40 receives a sorting signal, and the sorting device 40 grabs the abnormal battery cell and places the abnormal battery cell in a defective product collection bin.

[0175] It is determined that the battery cell 600 is a normal battery cell, and the sorting device 40 receives a release signal. The tray carrying the normal battery cells moves to the third transfer device 90 along the sorting conveyor line 200.

[0176] The third transfer device 90 receives the third transfer signal, and transfers the tray carrying the normal battery cells to the second turning conveyor line 300 , and the normal battery cells are further moved to the unloading station along with the second turning conveyor line 300 .

[0177] The unloading device 50 receives the unloading signal, and the normal battery cell is separated from the tray. The unloading device 50 grabs the normal battery cell and places the normal battery cell on the unloading conveyor line 500. The normal battery cell moves with the unloading conveyor line 500 to the next workstation for subsequent operations.

[0178] The above is only a specific embodiment of the present invention, but the protection scope of this application is not limited thereto. Any changes or substitutions made within the spirit and principle of the present invention should be included in the protection scope of this application. Therefore, the protection scope of this application should be based on the protection scope of the claims.

Claims

1. A battery cell detection system, characterized in that: include: A loading device, a first detection device, a second detection device, a sorting device and a unloading device are sequentially arranged along the conveying direction; The loading device is used to transfer the tray carrying the battery cells to the first inlet end of the first detection device; The first detection device is used to detect the battery cell and generate a first detection sub-result; The second detection device is used to detect the battery cell and generate a second detection sub-result; The sorting device is used to sort abnormal cells to a first target area according to the first detection sub-result and the second detection sub-result; The unloading device is used to transport the normal battery cells after inspection to the second target area.

2. The battery cell detection system according to claim 1, wherein: Also includes: Attitude adjustment device; The posture adjustment device is arranged at the first inlet end of the first detection device or the second inlet end of the second detection device; The posture adjustment device is used to adjust the tray to a preset posture so that the target detection position of the battery cell is opposite to the detection end of the first detection device, or the target detection position of the battery cell is opposite to the detection end of the second detection device.

3. The battery cell detection system according to claim 2, wherein: It also includes: a first transfer device, a second transfer device and a first turning conveyor line body; The first turning conveyor line is arranged between the first outlet end of the first detection device and the second inlet end of the second detection device; The first transfer device is disposed at the first outlet end, and is used to transfer the pallet at the first outlet end to the first end of the first turning conveyor line body; The second transfer device is disposed at the second end of the first turning conveyor line body, and is used for transferring the tray to the second entrance end.

4. The battery cell detection system according to claim 3, wherein: It also includes: a third transfer device and a second steering conveyor line body; The sorting device is arranged in the conveying direction of the sorting conveying line, and the sorting conveying line has a third end close to the second detection device and a fourth end far away from the second detection device; The second turning conveyor line is disposed between the fourth end and the first inlet end, and a conveying direction of the second turning conveyor line is parallel to a conveying direction of the first turning conveyor line; The third transfer device is arranged at the fourth end, and the third transfer device is used to transfer the pallet at the fourth end to the second turning conveyor line, and the second turning conveyor line is used to transport the pallet carrying normal battery cells, the empty pallet and the pallet carrying the battery cells to be tested.

5. The battery cell detection system according to claim 4, wherein: It also includes: a feeding conveying line body; The loading conveyor line is arranged on one side of the second turning conveyor line, and the loading conveyor line is used to convey the battery cell to be tested; The loading device is used to place the battery cells to be tested on the loading conveyor line body on the unloaded tray on the second turning conveyor line body, and the second turning conveyor line body is used to transport the tray carrying the battery cells to be tested to the first entrance end.

6. The battery cell detection system according to claim 4, wherein: It also includes: a material unloading conveying line body; The unloading conveyor line is arranged on one side of the second turning conveyor line, and the unloading conveyor line is used to convey the normal battery cells after detection; The unloading device is used to separate the normal battery cells conveyed by the sorting conveying line to the second turning conveying line from the tray, and place the normal battery cells on the unloading conveying line.

7. A detection method for a battery cell detection system, comprising: Based on the loading signal, the battery cell to be tested is transferred to the first detection device; Based on the first detection signal, the battery cell is detected by the first detection device to obtain a first detection sub-result; transporting the battery cell to be tested to a second testing device; Based on the second detection signal, the battery cell is detected by the second detection device to obtain a second detection sub-result; Based on the first detection sub-result and the second detection sub-result, determining whether the battery cell is an abnormal battery cell or a normal battery cell; The abnormal cells are sorted to a first target area, and the normal cells are transported to a second target area.

8. The detection method of the battery cell detection system according to claim 7, wherein: Before the testing of the battery cell by the first testing device, the method further includes: Based on the posture adjustment signal, adjusting the tray carrying the battery cells to a preset posture so that the target detection position of the battery cells is opposite to the detection end of the first detection device; or Before the second detection device detects the battery cell, the method further includes: Based on the posture adjustment signal, the tray carrying the battery cells is adjusted to a preset posture so that a target detection position of the battery cells is opposite to a detection end of the second detection device.

9. The detection method of the battery cell detection system according to claim 7, wherein: The step of transferring the battery cell to be tested to the first detection device comprises: The battery cell to be tested is transported to a position corresponding to the loading device along the loading conveyor line; Based on the loading signal, the battery cell is placed on an empty tray on the second turning conveyor line; The tray carrying the battery cells is conveyed to the first entrance end of the first detection device through the second turning conveyor line.

10. The detection method of the battery cell detection system according to claim 7, wherein: The step of transferring the battery cell to be tested to a second testing device comprises: Based on the first transfer signal, adjusting the tray from a preset posture to a target posture; Transferring the pallet adjusted to the target posture to the first turning conveyor line; Based on the second transfer signal, the pallet on the first turning conveyor line is transferred to the second entrance end of the second detection device.

11. The detection method of the battery cell detection system according to claim 10, wherein: The step of sorting the abnormal cells to the first target area and transporting the normal cells to the second target area comprises: Determine that the battery cell is an abnormal battery cell, and sort the abnormal battery cell to the first target area by a sorting device based on a sorting signal; or Determining that the battery cell is a normal battery cell, and transferring the normal battery cell to a second steering conveyor line based on a third transfer signal; Based on the unloading signal, the normal battery cell is transported to the second target area by the unloading device.

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