Tray, transfer device and testing apparatus

Abstract

A tray, a transfer device and a testing apparatus. The tray (100) comprises a support plate (1), pressing plate assemblies (2) and magnetic attraction assemblies, wherein the support plate is configured to carry a battery cell (200); each pressing plate assembly comprises a connecting base (21) and a pressing plate (22), the connecting base being connected to the support plate, and the pressing plate being rotatably connected to the connecting base and being operably switched between a first position state and a second position state; the magnetic attraction assemblies are disposed on the corresponding connecting bases and configured to hold the pressing plates in the first position state or the second position state; each pressing plate comprises a first contact portion (221) and a second contact portion (222); when the pressing plates are in the first position state, the first contact portions abut against the battery cell to press the battery cell tightly against the support plate; and when the pressing plates are in the second position state, the second contact portions abut against the corresponding connecting bases to release the battery cell. By means of the magnetic attraction force between the magnetic attraction assemblies and the pressing plates, the tray enables the pressing plates to be stably held in either the first position state or the second position state, thereby conveniently and quickly pressing or releasing the battery cell.

Description

Tray, transfer device and detection equipment

[0001] The present application claims priority from Chinese Patent Application No. 202411252570.X filed on September 6, 2024, the contents of which are hereby incorporated by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of detection equipment, in particular to a tray, a transfer device and a detection equipment. BACKGROUND

[0003] The electric core is an important component of the battery, and the performance of the electric core directly affects the use performance of the battery. The quality of the electric core needs to be detected before assembly.

[0004] The single square electric core is a soft and flat cuboid structure. During online detection, a tray is needed to support the electric core. In the related art, the tray is usually used to place the electric core on the tray, and the electric core is clamped from two directions by a positioning mechanism or a limiting mechanism. The overall structure is complex, and the steps of fixing and releasing the electric core are relatively cumbersome and inconvenient to operate. In the related art, the electric core is adsorbed by a suction cup, and the suction cup is provided with adsorption force by a gas source to adsorb the electric core on the suction cup. The structure is complex and inconvenient to operate. SUMMARY

[0005] Therefore, the present application provides a tray, a transfer device and a detection equipment to solve the problem of complex structure of the existing tray for carrying the electric core, and inconvenient operation when fixing or releasing the electric core.

[0006] In a first aspect, an embodiment of the present application provides a tray, comprising:

[0007] a support plate configured to support an electric core;

[0008] a pressing plate assembly comprising a connecting seat and a pressing plate, the connecting seat being connected to the support plate, the pressing plate being rotatably connected to the connecting seat, and the pressing plate being operable to switch between a first position state and a second position state; and

[0009] a magnetic attraction assembly arranged on the connecting seat and configured to keep the pressing plate in the first position state or the second position state,

[0010] wherein the pressing plate comprises a first contact portion and a second contact portion, when the pressing plate is in the first position state, the first contact portion abuts against the electric core to press the electric core against the support plate, and when the pressing plate is in the second position state, the second contact portion abuts against the connecting seat to release the electric core.

[0011] According to an embodiment of the present application, the connecting seat comprises a base and rotating connecting portions, the base is arranged at the edge of the supporting plate, the rotating connecting portions are arranged at the base in a spaced manner, and the pressing plate is located between the rotating connecting portions; and

[0012] The rotating connecting portion comprises a connecting portion and a rotating portion, the connecting portion is connected to the base, and one of the connecting portion and the pressing plate is rotationally connected to the rotating portion.

[0013] According to an embodiment of the present application, a first accommodating groove is arranged at the side of the base away from the supporting plate, the first accommodating groove is used for accommodating the second contact portion, the top surface of the base forms a first contact surface, and the groove bottom surface of the first accommodating groove forms a second contact surface.

[0014] The pressing plate further comprises a transition portion, the transition portion is connected to the first contact portion and the second contact portion at two ends respectively, and the transition portion is rotationally connected to the rotating portion; and

[0015] The first contact portion is in contact with the first contact surface when the pressing plate is in the first position state, and the second contact portion is in contact with the second contact surface when the pressing plate is in the second position state.

[0016] According to an embodiment of the present application, a second accommodating groove is arranged at the side of the base away from the supporting plate, the second accommodating groove is formed by recessing from the side of the base away from the supporting plate to the side of the base facing the supporting plate, and the second accommodating groove is used for accommodating a clamping portion.

[0017] According to an embodiment of the present application, the magnetic attraction assembly comprises a first magnetic attraction unit and a second magnetic attraction unit, the first magnetic attraction unit is arranged at the top of the connecting seat, and the second magnetic attraction unit is arranged at the side of the connecting seat.

[0018] The pressing plate comprises a non-metal layer and a third magnetic attraction unit embedded in the non-metal layer; and

[0019] The magnetic attraction force between the first magnetic attraction unit and the third magnetic attraction unit enables the pressing plate to be kept in the first position state, and the magnetic attraction force between the second magnetic attraction unit and the third magnetic attraction unit enables the pressing plate to be kept in the second position state.

[0020] According to an embodiment of the present application, the first magnetic attraction unit and the second magnetic attraction unit are magnetic pieces, and the third magnetic attraction unit is a metal piece; or

[0021] The first magnetic attraction unit and the second magnetic attraction unit are metal pieces, and the third magnetic attraction unit is a magnetic piece.

[0022] According to the embodiment of the present application, the first magnetic attraction unit and / or the second magnetic attraction unit is embedded in the connecting seat.

[0023] According to the embodiment of the present application, further comprising a limiting assembly.

[0024] The limiting assembly comprises a first limiting member and a second limiting member, and the first limiting member and the second limiting member are respectively arranged at two ends of the supporting plate.

[0025] The first limiting member and the second limiting member are used to contact two end faces opposite to the battery cell.

[0026] According to the embodiment of the present application, further comprising a positioning member.

[0027] The positioning member is arranged in the connecting seat.

[0028] The supporting plate is provided with a positioning hole, and the positioning hole extends into the connecting seat, and the positioning hole is coaxially arranged with the positioning member.

[0029] In the stacked state of the plurality of supporting plates, in the two adjacent supporting plates, the positioning member of one supporting plate is located in the positioning hole of the other supporting plate.

[0030] According to the embodiment of the present application, at least two pressing plate assemblies are arranged on opposite sides of the supporting plate, and a plurality of magnetic attraction assemblies are arranged one by one corresponding to a plurality of pressing plate assemblies.

[0031] According to the embodiment of the present application, the supporting plate is a non-metal member.

[0032] In a second aspect, the embodiments of the present application provide a transfer device, comprising:

[0033] The supporting plate as described above;

[0034] A clamping mechanism comprising two clamping parts arranged oppositely, used for clamping the supporting plate;

[0035] A transfer mechanism connected with the clamping mechanism, used for transferring the supporting plate.

[0036] In a third aspect, the embodiments of the present application provide a detection device, comprising:

[0037] The transfer device as described above; and

[0038] A detection device comprising a conveying mechanism and a detection mechanism,

[0039] The transfer device is used to transfer the supporting plate carrying the battery cell to the conveying mechanism, and the detection mechanism is used to detect the battery cell carried by the supporting plate on the conveying mechanism.

[0040] The tray, transfer device and detection equipment provided by the embodiments of the present application can at least achieve the following technical effects: through the downward movement and upward movement of the pressing plate, the pressing plate can be flexibly switched between the first position and the second position, through the magnetic attraction force between the magnetic attraction assembly and the pressing plate, the pressing plate can be stably kept in the first position state or the second position state, so as to realize the pressing of the battery cell or the taking and placing of the battery cell, and the tray can conveniently and quickly realize the pressing or loosening of the battery cell. BRIEF DESCRIPTION OF DRAWINGS

[0041] The above and other objects, features and advantages of the present application will become more apparent from the following description of embodiments of the present application, taken in conjunction with the accompanying drawings, in which:

[0042] FIG. 1 schematically shows a structural schematic diagram of a tray according to an embodiment of the present application;

[0043] FIG. 2 schematically shows a schematic diagram of a tray pressing a battery cell according to an embodiment of the present application;

[0044] FIG. 3 schematically shows a schematic diagram of a tray loosening a battery cell according to an embodiment of the present application;

[0045] FIG. 4 schematically shows a structural schematic diagram of a tray plate according to an embodiment of the present application;

[0046] FIG. 5 schematically shows a structural schematic diagram of a pressing plate according to an embodiment of the present application;

[0047] FIG. 6 schematically shows a side view of a pressing plate according to an embodiment of the present application;

[0048] FIG. 7 schematically shows a position schematic diagram of a third magnetic attraction unit in a pressing plate according to an embodiment of the present application;

[0049] FIG. 8 schematically shows a schematic diagram of a pressing plate in a first position state according to an embodiment of the present application;

[0050] FIG. 9 schematically shows a schematic diagram of a pressing plate in a second position state according to an embodiment of the present application;

[0051] FIG. 10 schematically shows a structural schematic diagram of a connecting seat according to an embodiment of the present application;

[0052] FIG. 11 schematically shows a front view of a connecting seat according to an embodiment of the present application;

[0053] FIG. 12 schematically shows a top view of a connecting seat according to an embodiment of the present application;

[0054] FIG. 13 schematically shows a structural schematic diagram of a base according to an embodiment of the present application;

[0055] Figure 14 schematically illustrates the structure of the rotating connection portion according to an embodiment of this application;

[0056] Figure 15 schematically illustrates a transfer device holding a pallet according to an embodiment of this application;

[0057] Figure 16 schematically illustrates the structure of a detection device according to an embodiment of this application;

[0058] Reference numerals: 100: Tray; 200: Battery cell; 210: Battery cell assembly; 1: Support plate; 11: Groove; 2: Pressure plate assembly; 21: Connecting seat; 211: Base; 2111: First receiving groove; 2112: Second receiving groove; 212: Rotating connecting part; 2121: Connecting part; 2122: Rotating part; 2123: Limiting plate; 22: Pressure plate; 221: First contact part; 222: Second contact part; 223: Transition part; 224: Third magnetic suction unit; 31: First magnetic suction unit; 32: Second magnetic suction unit; 41: First limiting member; 42: Second limiting member; 5: Positioning member; 600: Transfer device; 61: Clamping mechanism; 62: Transfer mechanism; 700: Detection equipment; 71: First conveying mechanism; 72: X-ray imaging detection mechanism; 721: 722: First transmitting unit; 73: Second transmitting mechanism; 74: Tomographic imaging detection mechanism; 741: Second transmitting unit; 742: Second receiving unit. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0060] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0061] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] The tray 100 provided by the embodiments of the present application is described below in combination with FIG. 1 to FIG. 14.

[0063] As shown in FIG. 1 to FIG. 6, the tray 100 provided by the embodiments of the present application includes a tray plate 1, a pressing plate assembly 2 and a magnetic attraction assembly, the tray plate 1 is used to carry the battery cell 200; the pressing plate assembly 2 includes a connecting seat 21 and a pressing plate 22, the connecting seat 21 is connected to the tray plate 1, the pressing plate 22 is rotatably connected to the connecting seat 21, and the pressing plate 22 is operable to switch between a first position state and a second position state; the magnetic attraction assembly is arranged on the connecting seat 21 and is used to keep the pressing plate 22 in the first position state or the second position state. For example, the pressing plate 22 includes a first contact part 221 and a second contact part 222, the pressing plate 22 is in the first position state, the first contact part 221 abuts against the battery cell 200 to press the battery cell 200 tightly on the tray plate 1; the pressing plate 22 is in the second position state, and the second contact part 222 abuts against the connecting seat 21 to release the battery cell 200.

[0064] Specifically, the tray plate 1 is a plate-shaped body, the tray plate 1 is used to carry the battery cell 200, and the length and width dimensions of the tray plate 1 are adapted to the dimensions of the carried battery cell 200. The tray plate 1 has a length direction and a width direction, along the width direction of the tray plate 1, the tray plate 1 has two component parts symmetrically distributed about a vertical plane perpendicular to the tray plate 1, the vertical plane is defined as the central plane of the tray plate 1, and the direction in which the central plane of the tray plate 1 is located is consistent with the length direction.

[0065] The tray plate 1 is a non-metal part, and the tray plate 1 is made of plastic, rubber, carbon fiber or other materials. For example, the tray plate 1 can be made of polyoxymethylene material, which has high strength, hardness and wear resistance. During the movement of the tray 100 along the conveying line body, the tray plate 1 is relatively rubbed with the conveying line body, and the polyoxymethylene material has excellent wear resistance, so that the tray plate 1 has good wear resistance, which is beneficial to improve the service life of the tray 100.

[0066] The tray plate 1 is a non-metal part, and the absorption ability of the non-metal material to the rays is weak during the detection of the battery cell 200 on the tray plate 1, which maximally reduces the influence of the tray plate 1 on the detection and ensures the accuracy of the detection. In addition, the tray plate 1 is a non-metal part, which is beneficial to the lightweight of the tray plate 1.

[0067] Further, as shown in FIG. 4, the recess 11 is formed on the pallet 1 by recessing the end face of the pallet 1 towards the center face of the pallet 1, and the groove width and groove depth of the recess 11 are not specifically limited. The battery cell 200 is placed on the pallet 1, and the partial area of the battery cell 200 corresponding to the recess 11 is located outside the pallet 1. When the battery cell 200 needs to be taken off the pallet 1, the battery cell 200 can be taken by the working tool at the recess 11, which facilitates the separation of the battery cell 200 from the pallet 1. The recess 11 provides a suitable operation space for placing or taking the battery cell 200, which is beneficial to the convenience of operation.

[0068] The pressing plate assembly 2 is arranged on the pallet 1, and the number of the pressing plate assembly 2 is one, two, four or more, for example, the number of the pressing plate assembly 2 is an even number. Along the width direction of the pallet 1, the pallet 1 has opposite first and second sides, and the position of the pressing plate assembly 2 on the pallet 1 is arranged according to the number of the pressing plate assembly 2.

[0069] When the number of the pressing plate assembly 2 is one, the pressing plate assembly 2 is located in the middle of the pallet 1. When the number of the pressing plate assembly 2 is two, the two pressing plate assemblies 2 are located in the middle of the pallet 1 and are symmetrically arranged about the center face, or the two pressing plate assemblies 2 are staggered and arranged on the first and second sides of the pallet 1. When the number of the pressing plate assembly 2 is four, two pressing plate assemblies 2 are arranged on the first side of the pallet 1 at intervals, two pressing plate assemblies 2 are arranged on the second side of the pallet 1 at intervals, and the two pressing plate assemblies 2 on the first side and the two pressing plate assemblies 2 on the second side are symmetrically arranged about the center face.

[0070] The pressing plate assembly 2 includes a connecting seat 21 and a pressing plate 22, the connecting seat 21 can be connected with the pallet 1 by screwing, and the pressing plate 22 is rotationally connected with the connecting seat 21. For example, the two side faces of the pressing plate 22 are each provided with a rotating shaft, the rotating shaft is rotationally connected with the connecting seat 21, and the rotating shaft rotates to realize the rotation of the pressing plate 22.

[0071] The pressing plate 22 can be switched between a first position state and a second position state. When the pressing plate 22 is in the first position, the pressing plate 22 is parallel to the pallet 1, the battery cell 200 is placed on the pallet 1, and the battery cell 200 is located between the pallet 1 and the pressing plate 22. When the pressing plate 22 is in the second position, the pressing plate 22 is perpendicular to the pallet 1, the battery cell 200 can be taken off the pallet 1, or the battery cell 200 to be detected can be placed on the pallet 1.

[0072] As shown in FIG. 5, FIG. 6 and FIG. 7, the pressing plate 22 is generally cuboid, along the length direction of the pressing plate 22, the pressing plate 22 comprises a first contact part 221 and a second contact part 222, the length of the first contact part 221 is greater than the length of the second contact part 222. When the pressing plate 22 is in the first position, the first contact part 221 is in contact with the battery cell 200, and the battery cell 200 can be pressed tightly on the tray 1, so as to avoid the battery cell 200 from shaking during the movement of the tray 100. When the pressing plate 22 is in the second position, the second contact part 222 is in contact with the connecting seat 21, and the first contact part 221 is away from the tray 1, so as to facilitate the taking and placing of the battery cell 200 from the tray 1.

[0073] The magnetic attraction assembly is arranged on the connecting seat 21, and can be a magnet, an electromagnet, a magnetic fluid or the like. When the pressing plate 22 is flipped down to the first position, the magnetic attraction assembly and the first contact part 221 generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the first position, and the battery cell 200 can be pressed tightly by the pressing plate 22. When the pressing plate 22 is flipped up to the second position, the magnetic attraction assembly and the second contact part 222 generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the second position, so as to facilitate the taking of the battery cell 200 after detection or the placing of the battery cell 200 to be detected.

[0074] The flipping-down action and the flipping-up action of the pressing plate 22 can be operated by an operator or a mechanical hand. The use process of the tray 100 is described below.

[0075] The battery cell 200 to be detected is placed on the tray 1, a pressure is applied to the first contact part 221 of the pressing plate 22 towards the center side, the pressing plate 22 is flipped down to the first position, the magnetic attraction force between the magnetic attraction assembly and the first contact part 221 makes the pressing plate 22 stably kept in the first position, and then the battery cell 200 is tightly pressed on the tray 1.

[0076] After the battery cell 200 to be detected is fixed on the tray 100, the tray 100 carrying the battery cell 200 can be placed on the conveying line body of the detection equipment by a mechanical hand, a transfer device or an operator, and the tray 100 moves with the conveying line body into the detection channel of the detection equipment for detection.

[0077] After the detection of the battery cell 200 is completed, a pressure is applied to the second contact part 222 of the pressing plate 22 towards the center side, the pressing plate 22 is flipped up to the second position, the magnetic attraction force between the magnetic attraction assembly and the second contact part 222 makes the pressing plate 22 stably kept in the second position, so that the detected battery cell 200 can be taken off. Further, the next battery cell 200 to be detected is placed on the tray 1, and the above steps are repeated to detect the next battery cell 200.

[0078] By applying pressure to the first contact portion 221 or the second contact portion 222 of the pressing plate 22 towards the center surface side of the tray 1, the pressing plate 22 can be conveniently flipped to the first position or the second position. When the pressing plate 22 is flipped down to the first position, the magnetic attraction assembly generates a magnetic attraction force with the first contact portion 221, so that the pressing plate 22 is stably kept in the first position, thereby achieving compression of the battery cell 200. When the pressing plate 22 is flipped up to the second position, the magnetic attraction assembly generates a magnetic attraction force with the second contact portion 222, so that the pressing plate 22 is stably kept in the second position, thereby facilitating the taking and placing of the battery cell 200.

[0079] In the embodiments of the present application, the pressing plate 22 can be flexibly switched between the first position and the second position through the flipping down action and the flipping up action of the pressing plate 22. The pressing plate 22 can be stably kept in the first position state or the second position state through the magnetic attraction force between the magnetic attraction assembly and the pressing plate 22, so as to achieve compression of the battery cell 200 or taking and placing of the battery cell 200. The tray 100 can conveniently and quickly achieve compression or loosening of the battery cell 200.

[0080] As shown in FIGS. 8 to 12, in an optional embodiment, the connecting seat 21 includes a base 211 and a rotating connecting portion 212. The base 211 is arranged at the edge of the tray 1. Two rotating connecting portions 212 are arranged at the top surface of the base 211 in a spaced manner. The pressing plate 22 is located between the two rotating connecting portions 212. The rotating connecting portion 212 includes a connecting portion 2121 and a rotating portion 2122. The connecting portion 2121 is connected to the base 211. One of the connecting portion 2121 and the pressing plate 22 is rotationally connected to the rotating portion 2122.

[0081] Specifically, the connecting seat 21 includes a base 211 and a rotating connecting portion 212. The base 211 is in the shape of a cuboid. The base 211 is arranged at the edge of the tray 1. The base 211 can be connected to the tray 1 in a screwing manner. For example, a threaded hole is formed in the tray 1. A counterbore is formed in the base 211. A grub screw is screwed into the counterbore and the threaded hole in sequence, thereby achieving fixed connection of the base 211 and the tray 1.

[0082] The length direction of the base 211 is consistent with the length direction of the tray 1. Two rotating connecting portions 212 are arranged at the top surface of the base 211 in a spaced manner along the length direction of the base 211. The spacing between the two rotating connecting portions 212 is adapted to the width of the pressing plate 22. The pressing plate 22 is located between the two rotating connecting portions 212.

[0083] The rotating connecting portion 212 includes a connecting portion 2121 and a rotating portion 2122. The connecting portion 2121 can be connected to the base 211 in a screwing manner. For example, a first threaded hole is formed in the connecting portion 2121. A second threaded hole is formed in the base 211. The first threaded hole and the second threaded hole are coaxially arranged. A screw is screwed into the first threaded hole and the second threaded hole in sequence, thereby achieving connection of the connecting portion 2121 and the base 211.

[0084] One end of the rotating part 2122 is connected with the connecting part 2121, and the other end of the rotating part 2122 is connected with the pressing plate 22.

[0085] Optionally, a threaded hole is arranged on the side of the connecting part 2121 facing the pressing plate 22, and an external thread is arranged on the end of the rotating part 2122 facing the connecting part 2121, the threaded hole and the external thread are matched, and the rotating part 2122 and the connecting part 2121 are connected by screwing. The rotating part 2122 can also be welded on the side of the connecting part 2121 facing the pressing plate 22. An axle hole is arranged on the pressing plate 22, the axial direction of the axle hole is consistent with the width direction of the pressing plate 22, one end of the rotating part 2122 penetrates the axle hole of the pressing plate 22, and the rotating part 2122 is gap-fitted with the axle hole. By applying pressure to the first contact part 221 or the second contact part 222, the overturning action or the upturning action of the pressing plate 22 can be realized.

[0086] The assembling process of the pressing plate 22 and the connecting base 21 is as follows: after the rotating part 2122 and the connecting part 2121 are assembled, the two rotating parts 2122 are respectively penetrated into the axle holes of the pressing plate 22, and then the two rotating connecting parts 212 are placed on the base 211, and the base 211 and the connecting part 2121 are connected by screws, so that the rotating connection of the pressing plate 22 and the connecting base 21 is realized.

[0087] Further, as shown in FIG. 11 and FIG. 14, the end of the rotating part 2122 close to the connecting part 2121 is provided with a limiting plate 2123, and the limiting plate 2123 is coaxially arranged with the rotating part 2122. The rotating part 2122 and the connecting part 2121 are connected by screwing, the screwing position of the rotating part 2122 and the connecting part 2121 is adjusted by screwing the rotating part 2122, so that the distance between the two limiting plates 2123 on the two rotating connecting parts 212 is matched with the width of the pressing plate 22, that is, the distance between the two limiting plates 2123 is slightly greater than the width of the pressing plate 22. The pressing plate 22 has a first side surface facing one rotating connecting part 212 and a second side surface facing another rotating connecting part 212, and the width of the pressing plate 22 is the distance between the first side surface and the second side surface.

[0088] By adjusting the distance between the two limiting plates 2123, the distance between the two limiting plates 2123 is matched with the width of the pressing plate 22, and the two limiting plates 2123 can limit the displacement of the pressing plate 22 along the axial direction of the rotating part 2122, which is beneficial to guarantee the stability of the rotation of the pressing plate 22.

[0089] Optionally, the connecting portion 2121 is provided with a shaft hole on the side facing the pressing plate 22, and the rotating portion 2122 is connected to the side of the pressing plate 22 by welding or screwing. One end of the rotating portion 2122 penetrates the shaft hole of the connecting portion 2121, and the rotating portion 2122 is in clearance fit with the shaft hole. By applying pressure to the first contact portion 221 or the second contact portion 222, the pressing plate 22 can be flipped down or flipped up.

[0090] The assembly process of the pressing plate 22 and the connecting base 21 is as follows: after the two rotating portions 2122 are assembled with the pressing plate 22, the two rotating portions 2122 are respectively penetrated into the shaft holes of the connecting portions 2121, and then the rotating connecting portions 212 are placed on the base 211, and the base 211 and the connecting portions 2121 are connected by screws, thereby realizing the rotating connection of the pressing plate 22 and the connecting base 21.

[0091] The pressing plate 22 is connected to the base 211 by the two rotating connecting portions 212, and the two rotating portions 2122 are beneficial to the stability of the rotation of the pressing plate 22.

[0092] In the embodiment of the present application, the pressing plate 22 is connected to the two rotating portions 2122, and the two rotating portions 2122 are connected to the base 211 by the two connecting portions 2121, so that the overall structure is compact, the assembly is convenient, and the two rotating portions 2122 are beneficial to the stability of the rotation of the pressing plate 22.

[0093] As shown in FIGS. 8, 9, 13 and 14, in an optional embodiment, the base 211 is provided with a first accommodating groove 2111 on the side away from the support plate 1, the first accommodating groove 2111 is used for accommodating the second contact portion 222, the top surface of the base 211 forms a first abutting surface, and the groove bottom surface of the first accommodating groove 2111 forms a second abutting surface. The pressing plate 22 further comprises a transition portion 223, two ends of the transition portion 223 are respectively connected to the first contact portion 221 and the second contact portion 222, and the transition portion 223 is in rotating connection with the rotating portion 2122. When the pressing plate 22 is in the first position state, the first contact portion 221 abuts against the first abutting surface, and when the pressing plate 22 is in the second position state, the second contact portion 222 abuts against the second abutting surface.

[0094] Specifically, the base 211 is provided with the first accommodating groove 2111 on the side away from the support plate 1, the first accommodating groove 2111 is formed by recessing from one end surface of the base 211 away from the support plate 1 to one end surface of the base 211 facing the support plate 1, the first accommodating groove 2111 comprises two first side groove wall surfaces and a first groove bottom surface, and the interval between the two first side groove wall surfaces is adapted to the width of the pressing plate 22. The two first side groove wall surfaces and the first groove bottom surface form a first accommodating region. The first accommodating groove 2111 is used for accommodating the pressing plate 22, and when the pressing plate 22 is in the second position state, the second contact portion 222 is located at the first accommodating groove 2111.

[0095] The top surface of the base 211 is a first abutting surface, and the bottom surface of the first slot is a second abutting surface. The first abutting surface and the second abutting surface are perpendicular to each other or close to perpendicular to each other.

[0096] The pressing plate 22 comprises a first contact portion 221, a transition portion 223, and a second contact portion 222 connected in sequence. The transition portion 223 is in a tapered shape. The thickness of the transition portion 223 gradually decreases in the direction from the middle portion of the transition portion 223 to the first contact portion 221. The thickness of the transition portion 223 gradually decreases in the direction from the middle portion of the transition portion 223 to the second contact portion 222.

[0097] The transition portion 223 is in a shape of thick in the middle and thin at both ends. The shaft hole is arranged at the transition portion 223. The shape of the transition portion 223 facilitates the connection with the rotating portion 2122. In addition, the transition portion 223 is relatively rotated with the rotating portion 2122, and the transition portion 223 is subjected to a relatively large force. The tapered shape of the transition portion 223 enables the transition portion 223 to have sufficient strength, so that the shaft hole is prevented from being deformed in the repeated rotation process.

[0098] In addition, the thickness of the transition portion 223 gradually decreases in the direction from the middle portion of the transition portion 223 to both ends of the transition portion 223. This is beneficial to reduce the thickness of the first contact portion 221 and the second contact portion 222, and is beneficial to the lightweight of the pressing plate 22.

[0099] The first contact portion 221 and the second contact portion 222 are arranged in a staggered manner along the thickness direction of the pressing plate 22. When the pressing plate 22 is flipped down to the first position, the first contact portion 221 can abut against the first abutting surface, and a surface contact is formed between the first contact portion 221 and the first abutting surface. The pressing plate 22 is not prone to shaking or shaking due to external force factors, which is beneficial to further improve the stability of the pressing plate 22 in the first position.

[0100] When the pressing plate 22 is flipped up to the second position, the second contact portion 222 can abut against the second abutting surface, and a surface contact is formed between the second contact portion 222 and the second abutting surface. The pressing plate 22 is not prone to shaking or shaking due to external force factors, which is beneficial to further improve the stability of the pressing plate 22 in the second position.

[0101] As shown in FIG. 13, in an optional embodiment, a second accommodating slot 2112 is arranged on the side of the base 211 away from the tray 1. The second accommodating slot 2112 is recessed from one side surface of the base 211 away from the tray 1 to the side surface of the base 211 facing the tray 1, and is used for accommodating the clamping portion.

[0102] Specifically, the second accommodating groove 2112 is arranged on the side of the base 211 away from the tray 1. The base 211 has an outer side facing away from the tray 1 and an inner side facing the tray 1. The second accommodating groove 2112 is formed by recessing from the outer side to the inner side along the width direction of the base 211. The groove depth of the second accommodating groove 2112 is smaller than the groove depth of the first accommodating groove 2111. The second accommodating groove 2112 can be in communication with the first accommodating groove 2111.

[0103] The second accommodating groove 2112 includes two second side groove walls, a second groove bottom, and a second groove top. The two second side groove walls, the second groove bottom, and the second groove top enclose a second accommodating area.

[0104] The second accommodating groove 2112 is used for accommodating the clamping part of the clamping device. During clamping of the tray 100, the clamping part of the clamping jaw extends into the second accommodating groove 2112. The clamping part is in contact with part or all of the second side groove walls, the second groove bottom, and the second groove top, which is beneficial to the firmness of clamping.

[0105] It can be understood that the clamping device includes two clamping jaws. The two clamping jaws apply clamping force to the tray 100 from two opposite directions. The two clamping parts are respectively in contact with the groove walls of the second accommodating groove 2112 on the first side and the second side of the tray 1, which ensures the stability of clamping and effectively prevents the tray 100 from slipping off.

[0106] As shown in FIGS. 7, 8, 9, 10, 11, 12, and 13, in an optional embodiment, the magnetic attraction assembly includes a first magnetic attraction unit 31 and a second magnetic attraction unit 32. The first magnetic attraction unit 31 is arranged on the top of the connecting seat 21, and the second magnetic attraction unit 32 is arranged on the side of the connecting seat 21. The pressing plate 22 includes a non-metal layer and a third magnetic attraction unit 224 embedded in the non-metal layer. The magnetic attraction force between the first magnetic attraction unit 31 and the third magnetic attraction unit 224 causes the pressing plate 22 to remain in the first position state. The magnetic attraction force between the second magnetic attraction unit 32 and the third magnetic attraction unit 224 causes the pressing plate 22 to remain in the second position state.

[0107] Specifically, the magnetic attraction assembly includes a first magnetic attraction unit 31 and a second magnetic attraction unit 32. Both the first magnetic attraction unit 31 and the second magnetic attraction unit 32 are arranged on the base 211. The first magnetic attraction unit 31 is located on the top of the base 211, and the second magnetic attraction unit 32 is located on the side of the base 211. In the vertical direction, the first magnetic attraction unit 31 and the second magnetic attraction unit 32 are not located in the same vertical plane. The first magnetic attraction unit 31 and the second magnetic attraction unit 32 are arranged away from each other.

[0108] The main structure of the pressing plate 22 is a non-metal material, the pressing plate 22 comprises a non-metal layer and a third magnetic attraction unit 224 embedded in the non-metal layer, and the material of the non-metal layer can be plastic, rubber, carbon fiber or the like. For example, the non-metal layer is made of polyoxymethylene material. During the detection process, the non-metal layer has weak absorption capacity for the rays, which can minimize the impact on the detection.

[0109] The third magnetic attraction unit 224 is arranged close to the second contact part 222, part of the third magnetic attraction unit 224 is located in the second contact part 222, part of the third magnetic attraction unit 224 is located in the transition part 223, and part of the third magnetic attraction unit 224 can also extend into the first contact part 221.

[0110] The first magnetic attraction unit 31, the second magnetic attraction unit 32 and the third magnetic attraction unit 224 can all be magnets.

[0111] When the pressing plate 22 is in the first position, the first contact part 221 contacts the top surface of the base 211, the second contact part 222 is away from the side surface of the base 211, i.e. the second contact part 222 is away from the bottom surface of the first groove, the first magnetic attraction unit 31 and the third magnetic attraction unit 224 are close to each other, and the magnetic attraction force between the first magnetic attraction unit 31 and the third magnetic attraction unit 224 enables the pressing plate 22 to be stably kept in the first position.

[0112] When the pressing plate 22 is in the second position, the second contact part 222 contacts the side surface of the base 211, the first contact part 221 is away from the top surface of the base 211, the second magnetic attraction unit 32 and the third magnetic attraction unit 224 are close to each other, and the magnetic attraction force between the second magnetic attraction unit 32 and the third magnetic attraction unit 224 enables the pressing plate 22 to be stably kept in the second position.

[0113] By applying a small pressure to the first contact part 221, the adsorption of the first magnetic attraction unit 31 and the third magnetic attraction unit 224 can be realized, and by applying a small pressure to the second contact part 222, the adsorption of the second magnetic attraction unit 32 and the third magnetic attraction unit 224 can be realized, which is conducive to the convenient switching of the pressing plate 22 between the first position and the second position.

[0114] By arranging the first magnetic attraction unit 31 and the second magnetic attraction unit 32 at different positions of the base 211 and arranging the third magnetic attraction unit 224 inside the pressing plate 22, the pressing plate 22 can be stably kept in the first position or the second position, and the structure is simple and easy to realize.

[0115] ​In the embodiments of the present application, the first magnetic attraction unit 31 is arranged on the top of the base 211, the second magnetic attraction unit 32 is arranged on the side of the base 211, and the third magnetic attraction unit 224 is arranged in the interior of the pressing plate 22. The magnetic attraction force between the first magnetic attraction unit 31 and the third magnetic attraction unit 224 can stably keep the pressing plate 22 in the first position, and the magnetic attraction force between the second magnetic attraction unit 32 and the third magnetic attraction unit 224 can stably keep the pressing plate 22 in the second position. The structure is simple, easy to assemble, low in manufacturing cost, and suitable for mass production of the tray 100.

[0116] As shown in FIGS. 10, 11, 12 and 13, in optional embodiments, the first magnetic attraction unit 31 and the second magnetic attraction unit 32 are magnetic pieces, and the third magnetic attraction unit 224 is a metal piece; or the first magnetic attraction unit 31 and the second magnetic attraction unit 32 are metal pieces, and the third magnetic attraction unit 224 is a magnetic piece.

[0117] Optionally, the first magnetic attraction unit 31 and the second magnetic attraction unit 32 are both magnetic pieces, and the first magnetic attraction unit 31 and the second magnetic attraction unit 32 can both be magnets. The first magnetic attraction unit 31 includes one or more first magnets, for example, the first magnetic attraction unit 31 includes two first magnets, and the two first magnets are arranged at intervals on the top of the base 211. The second magnetic attraction unit 32 includes one or more second magnets, for example, the second magnetic attraction unit 32 includes two second magnets, and the two second magnets are arranged at intervals at the groove bottom of the first accommodating groove 2111.

[0118] The third magnetic attraction unit 224 is a metal piece, which is arranged close to the second contact part 222 and the transition part 223. The material of the metal piece can be iron, nickel, cobalt, etc.

[0119] When the pressing plate 22 is flipped down to the first position, the first magnet is close to the metal piece, and the second magnet is away from the metal piece. The first magnet and the metal piece generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the first position. When the pressing plate 22 is flipped up to the second position, the first magnet is away from the metal piece, and the second magnet is close to the metal piece. The second magnet and the metal piece generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the second position.

[0120] Optionally, the first magnetic attraction unit 31 and the second magnetic attraction unit 32 can both be magnetic fluids. The two magnetic fluids are defined as a first magnetic fluid and a second magnetic fluid, respectively. The first magnetic fluid is filled in the top of the base 211, and the second magnetic fluid is filled at the groove bottom of the first accommodating groove 2111. The first magnetic fluid and the metal piece generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the first position. The second magnetic fluid and the metal piece generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the second position.

[0121] Optionally, the first magnetic attraction unit 31 and the second magnetic attraction unit 32 are both metal pieces, and the two metal pieces are defined as a first metal piece and a second metal piece respectively, and the third magnetic attraction unit 224 is a magnet. The first metal piece is arranged on the top of the base 211, and the second metal piece is arranged at the bottom of the first accommodating groove 2111.

[0122] When the pressing plate 22 is flipped down to the first position, the first metal piece is close to the magnet, and the second metal piece is away from the magnet. The first metal piece and the magnet generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the first position. When the pressing plate 22 is flipped up to the second position, the first metal piece is away from the magnet, and the second metal piece is close to the magnet. The second metal piece and the magnet generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the second position.

[0123] Optionally, the first magnetic attraction unit 31 and the second magnetic attraction unit 32 are both metal pieces, and the third magnetic attraction unit 224 is a magnetic fluid filled in the non-metal layer. The first metal piece and the magnetic fluid generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the first position. The second metal piece and the magnetic fluid generate a magnetic attraction force, so that the pressing plate 22 is stably kept in the second position.

[0124] One of the first magnetic attraction unit 31 and the third magnetic attraction unit 224 is a magnet, and the other is a metal piece. The magnetic attraction force generated between the two is neither too large nor too small, and a smaller pressure is applied to the second contact part 222, so that the first magnetic attraction unit 31 and the third magnetic attraction unit 224 can be separated, which is beneficial to easily switch the pressing plate 22 from the first position to the second position.

[0125] One of the second magnetic attraction unit 32 and the third magnetic attraction unit 224 is a magnet, and the other is a metal piece. The magnetic attraction force generated between the two is neither too large nor too small, and a smaller pressure is applied to the first contact part 221, so that the second magnetic attraction unit 32 and the third magnetic attraction unit 224 can be separated, which is beneficial to easily switch the pressing plate 22 from the second position to the first position.

[0126] The third magnetic attraction unit 224 is embedded in the non-metal layer, and the first magnetic attraction unit 31 and the third magnetic attraction unit 224 are not in direct contact. This is beneficial to easily realize the mutual attraction of the two and also beneficial to easily separate the two. The second magnetic attraction unit 32 and the third magnetic attraction unit 224 are not in direct contact. This is beneficial to easily realize the mutual attraction of the two and also beneficial to easily separate the two.

[0127] As shown in FIG. 13, in an optional embodiment, the first magnetic attraction unit 31 and / or the second magnetic attraction unit 32 is embedded in the connecting seat 21.

[0128] Specifically, the first magnetic attraction unit 31 and the second magnetic attraction unit 32 can each be a magnet, and the first magnet and the second magnet can each be a columnar body. The number of the first magnet and the second magnet is set according to actual needs, for example, the number of the first magnet and the second magnet is two.

[0129] Two first blind holes are opened at the top of the base 211, and two first magnets are respectively placed in the two first blind holes. Two second blind holes are opened at the bottom of the first accommodating groove 2111, and two second magnets are respectively placed in the two second blind holes.

[0130] The first magnet is embedded in the top of the base 211, and the second magnet is embedded in the side of the base 211. The first magnet and the second magnet are both embedded in the interior of the base 211, which is beneficial to save installation space and facilitate compactness of the structure.

[0131] Alternatively, the first magnetic attraction unit 31 and the second magnetic attraction unit 32 can each be a magnetic fluid. The first magnetic fluid is filled in the top of the base 211, and the second magnetic fluid is filled in the side of the base 211. The first magnetic fluid and the second magnetic fluid are both filled in the interior of the base 211, which is beneficial to save installation space.

[0132] The pressing plate 22 is flipped down to the first position, and the first contact portion 221 can be in contact with the top surface of the base 211. The pressing plate 22 is flipped up to the second position, and the second contact portion 222 can be in contact with the bottom surface of the first accommodating groove 2111.

[0133] In the embodiments of the present application, the first magnetic attraction unit 31 and the second magnetic attraction unit 32 are embedded in the interior of the base 211, which is beneficial to save installation space and facilitate compactness of the overall structure. In addition, the first contact portion 221 and the second contact portion 222 are ensured to maximize the contact area with the top surface and the side surface of the base 211, respectively, which is beneficial to further improve the stability of the pressing plate 22 in the first position and the second position.

[0134] As shown in FIGS. 1, 2 and 3, in an optional embodiment, the tray 100 further comprises a limiting assembly, which comprises a first limiting piece 41 and a second limiting piece 42. The first limiting piece 41 and the second limiting piece 42 are respectively arranged at the two ends of the tray 1. The first limiting piece 41 and the second limiting piece 42 are used to contact the two end surfaces of the battery cell 200.

[0135] Specifically, along the length direction of the tray 1, the first limiting piece 41 and the second limiting piece 42 are respectively located at the first end and the second end of the tray 1. The spacing between the first limiting piece 41 and the second limiting piece 42 is adapted to the length of the battery cell 200.

[0136] The first limiting member 41 includes two first limiting blocks which are arranged at the first end of the supporting plate 1 in the width direction of the supporting plate 1; and the second limiting member 42 includes two second limiting blocks which are arranged at the second end of the supporting plate 1 in the width direction of the supporting plate 1.

[0137] The battery cell 200 is placed on the supporting plate 1, the first end of the battery cell 200 is opposite to the two first limiting blocks, and the tab at the first end of the battery cell 200 is located in the region between the two first limiting blocks; and the second end of the battery cell 200 is opposite to the two second limiting blocks, and the tab at the second end of the battery cell 200 is located in the region between the two second limiting blocks.

[0138] During the movement of the tray 100 on the conveying line, the two first limiting blocks and the two second limiting blocks can effectively prevent the tabs at the two ends of the battery cell 200 from colliding with other components, thereby protecting the tabs of the battery cell 200.

[0139] As shown in FIG. 1, in an optional embodiment, the tray 100 further includes a positioning member 5 which is arranged on the connecting seat 21; the supporting plate 1 is provided with a positioning hole which extends into the connecting seat 21, and the positioning hole is coaxially arranged with the positioning member 5; in the stacked state of the plurality of trays 100, the positioning member 5 of one of the two adjacent trays 100 is located in the positioning hole of the other tray 100.

[0140] Specifically, along the length direction of the base 211, the end of the base 211 is provided with the positioning member 5 which can be a columnar body, and the positioning member 5 can be connected with the base 211 by welding or screwing.

[0141] The supporting plate 1 is provided with a positioning hole which extends into the inside of the base 211, the hole diameter of the positioning hole matches the diameter of the positioning member 5, and the positioning member 5 is coaxially arranged with the positioning hole. It can be understood that the top surface of the positioning member 5 is higher than the top surface of the rotating connecting part 212.

[0142] When the plurality of trays 100 are stacked in the height direction, the positioning member 5 of the next tray 100 is located in the positioning hole of the previous tray 100, and the plurality of trays 100 are not prone to relative movement during the transfer of the plurality of trays 100, thereby facilitating the stacking and placement of the plurality of trays 100 and the transfer of the plurality of trays 100.

[0143] As shown in FIGS. 1, 2 and 3, in an optional embodiment, at least two pressing plate assemblies 2 are arranged on the opposite sides of the supporting plate 1, and the plurality of magnetic attraction assemblies are one-to-one arranged with the plurality of pressing plate assemblies 2.

[0144] Specifically, the number of the pressing plate assemblies 2 is even, for example, two pressing plate assemblies 2 are arranged on the first side of the support plate 1 along the length direction of the support plate 1, and two pressing plate assemblies 2 are arranged on the second side of the support plate 1 along the length direction of the support plate 1, and the battery cell 200 is pressed by the pressing plate assemblies 2 on the first side and the second side.

[0145] The number of the magnetic attraction assemblies is the same as the number of the pressing plate assemblies 2, for example, the number of the pressing plate assemblies 2 is four, and the number of the magnetic attraction assemblies is also four, and the battery cell 200 is stably fixed by the pressing plate assemblies 2 and the magnetic attraction assemblies.

[0146] During the movement of the tray 100 along the conveying line, the plurality of pressing plate assemblies 2 ensure that the battery cell 200 is not easily moved, and during the movement of the tray 100 carrying the battery cell 200 through the detection channel, the position and angle of the battery cell 200 do not change, thereby realizing accurate detection of the battery cell 200.

[0147] As shown in FIG. 15, the embodiment of the present application also provides a transfer device 600, which comprises the tray 100, the clamping mechanism 61, the transfer mechanism 62 and the driving mechanism described above. The transfer device 600 can be arranged at the entrance or exit of the detection device.

[0148] The structure of the tray 100 is described above and will not be repeated here. The moving end of the transfer mechanism 62 is connected with the clamping mechanism 61, the clamping mechanism 61 comprises two clamping parts, and the driving mechanism can drive the two clamping parts to move close to or away from each other.

[0149] The tray 100 carrying the battery cell 200 moves along the production line to a position close to the entrance section of the conveying line of the detection device, and the driving mechanism drives the two clamping parts to abut against the second accommodation grooves 2112 on the first side and the second side of the support plate 1 respectively, thereby clamping the tray 100.

[0150] The transfer mechanism 62 can perform rotation and translation in multiple dimensions, the clamping mechanism 61 clamps the tray 100, and the tray 100 is placed on the entrance section of the conveying line by the rotation and translation of the transfer mechanism 62. Further, the position and angle of the tray 100 can be adjusted by the rotation and translation of the transfer mechanism 62, thereby adjusting the position and angle of the battery cell 200 on the tray 100, and the tray 100 moves along the entrance section of the conveying line to the detection channel, thereby realizing detection of the battery cell 200.

[0151] After the detection is completed, the tray 100 moves to the exit section of the conveying line, and the exit section of the conveying line is also provided with a transfer device 600, the driving mechanism drives the two clamping parts to move close to each other to clamp the tray 100, and further the tray 100 is transferred from the exit section of the conveying line to the next conveying line by the rotation and translation of the transfer mechanism 62.

[0152] The structure of the tray 100 enables convenient and fast fixing or loosening of the battery cell 200. The second accommodating groove 2112 provided on the tray 100 is beneficial to the stability of clamping of the tray 100 by the clamping mechanism 62, and further beneficial to improving the transfer efficiency of the battery cell 200 and ensuring the reliability of the transfer process.

[0153] As shown in FIG. 16, the embodiment of the present application further provides a detection device 700, which comprises the detection apparatus and the above-mentioned transfer device 600.

[0154] Optionally, the detection apparatus comprises a first conveying mechanism 71, a radiographic detection mechanism 72, a second conveying mechanism 73 and a tomographic detection mechanism 74.

[0155] The first conveying mechanism 71 is used for conveying the battery cell 200, and the radiographic detection mechanism 72 can detect the battery cell 200 by X-ray. When detecting, the radiographic detection mechanism 72 can scan the whole or part of the battery cell 200. Through the scanning imaging result, the impurities in the battery cell 200 and the internal defects of the battery cell 200 can be detected. After the detection of the radiographic detection mechanism 72 is completed, the battery cells 200 are sequentially stacked to form a stacked battery cell group 210, and the battery cell group 210 is placed on the second conveying mechanism 73. During the conveying of the second conveying mechanism 73, the tomographic detection mechanism 74 can scan the battery cell group 210 on the second conveying mechanism 73. Through the scanning imaging result, the alignment of the pole piece of each battery cell 200 of the battery cell group 210 and the welding of the pole piece can be detected, and the simultaneous detection of the defect conditions of multiple battery cells 200 can be realized in one detection of the tomographic detection mechanism 74.

[0156] A rotating device 600 (not shown in FIG. 16) is arranged at the entrance section of the first conveying mechanism 71. The transfer device 600 clamps the tray 100 carrying the battery cell 200 and places the tray 100 on the first conveying surface of the first conveying mechanism 71. When the battery cell 200 is conveyed to the position corresponding to the radiographic detection mechanism 72, the radiographic detection mechanism 72 detects the battery cell 200 to obtain a scanning image of the battery cell 200. According to the scanning result, the impurities and internal defects of the battery cell 200 can be detected to determine whether the battery cell 200 meets the requirements.

[0157] A transfer device 600 is arranged between the outlet section of the first conveying mechanism 71 and the inlet section of the second conveying mechanism 73, the transfer device 600 clamps the tray 100 carrying the battery cell 200 on the first conveying surface and places the tray 100 on the second conveying surface of the second conveying mechanism 73, the transfer device 600 can sequentially stack the battery cells 200 to form the stacked battery cell group 210. When the battery cell group 210 is conveyed to the corresponding position of the tomographic imaging detection mechanism 74, the tomographic imaging detection mechanism 74 rotates around the side of the battery cell group 210, the movement surface of the tomographic imaging detection mechanism 74 is a horizontal surface parallel to the second conveying surface, and the scanning result of the tomographic imaging detection mechanism 74 is a side image of the battery cell group 210. According to the detection result, the alignment of the pole piece is detected to determine whether the battery cell 200 meets the requirements.

[0158] The outlet section of the second conveying mechanism 73 is provided with a transfer device 600 (not shown in FIG. 16), after detection, the transfer device 600 clamps the tray 100 on the second conveying mechanism and rotates the tray 100 to the next conveying line body for subsequent process operation.

[0159] Optionally, the ray imaging detection mechanism 72 comprises a first emitting unit 721 and a first receiving unit 722, the first emitting unit 721 and the first receiving unit 722 are oppositely arranged, the first emitting unit 721 can emit X-rays, and the received signals can be converted into images through the first receiving unit 722 to determine the internal defects of the battery cell 200. The first emitting unit 721 can be an X-ray machine, and the first receiving unit 722 can be a linear array detector.

[0160] Optionally, the tomographic imaging detection mechanism 74 comprises a second emitting unit 741 and a second receiving unit 742, the second emitting unit 741 and the second receiving unit 742 are oppositely arranged, and the second emitting unit 741 and the second receiving unit 742 can reciprocate around the second conveying surface, that is, the tomographic imaging detection mechanism 74 can detect the battery cell 200 in the thickness direction of the battery cell group 210.

[0161] The ray imaging detection mechanism 72 detects various defects of the battery cell 200, for example, whether the battery cell 200 contains impurities and foreign matters, whether the pole piece of the battery cell 200 is wrinkled, folded or damaged, and whether the pole piece has welding defects.

[0162] The tomographic imaging detection mechanism 74 detects various defects of the battery cell group 210, for example, whether the pole piece in the battery cell 200 is aligned, whether the pole piece is folded, whether the pole group is extruded, and whether the pole piece has welding defects.

[0163] The detection efficiency of the ray imaging detection mechanism 72 is high, but the detection precision is low, and the detection effect on impurities, foreign matters and other defects in the battery cell 200 is good. The detection efficiency of the tomographic imaging detection mechanism 74 is low, but the detection precision is high, and the detection effect on defects such as whether the electrode sheet is aligned and the electrode sheet is folded is good. Through the cooperation of the ray imaging detection mechanism 72 and the tomographic imaging detection mechanism 74, the detection precision and the detection efficiency are improved.

[0164] It can be understood that, according to the detection requirement, only the ray imaging detection mechanism 72 can be arranged to detect the battery cell 200, or only the tomographic imaging detection mechanism 74 can be arranged to detect the battery cell 200.

[0165] The tray 100 with the above structure can conveniently and quickly fix or loosen the battery cell 200. The transfer device 600 can ensure the stability of clamping the tray 100. When a plurality of battery cells 200 are detected in batches, the detection equipment 700 can effectively improve the detection efficiency and the detection accuracy.

[0166] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any change or replacement made within the spirit and principles of the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tray characterized in that, The tray comprises: a support plate for supporting a battery cell; a pressing plate assembly comprising a connecting base connected to the support plate and a pressing plate rotatably connected to the connecting base and operable to switch between a first position state and a second position state; and a magnetic assembly arranged on the connecting base for keeping the pressing plate in the first position state or the second position state, wherein the pressing plate comprises a first contact portion and a second contact portion, the first contact portion is in contact with the battery cell to press the battery cell against the support plate when the pressing plate is in the first position state, and the second contact portion is in contact with the connecting base to release the battery cell when the pressing plate is in the second position state.

2. The tray according to claim 1, wherein the connecting base comprises a base arranged on an edge of the support plate and two rotating connecting portions arranged on the base in a spaced manner, and the pressing plate is located between the two rotating connecting portions; and the rotating connecting portion comprises a connecting portion connected to the base and a rotating portion rotatably connected to one of the connecting portion and the pressing plate.

3. The tray according to claim 2, wherein the base arranged on a side away from the support plate is provided with a first accommodating groove for accommodating the second contact portion, a top surface of the base forms a first contact surface, and a groove bottom surface of the first accommodating groove forms a second contact surface; the pressing plate further comprises a transition portion, two ends of the transition portion are connected to the first contact portion and the second contact portion respectively, and the transition portion is rotatably connected to the rotating portion; and the first contact portion is in contact with the first contact surface when the pressing plate is in the first position state, and the second contact portion is in contact with the second contact surface when the pressing plate is in the second position state.

4. The tray according to claim 3, wherein the base arranged on a side away from the support plate is provided with a second accommodating groove, the second accommodating groove is formed by recessing from a side of the base away from the support plate to a side of the base facing the support plate, and the second accommodating groove is used for accommodating a clamping portion.

5. The tray according to any one of claims 1-4, wherein the magnetic assembly comprises a first magnetic unit arranged on a top of the connecting base and a second magnetic unit arranged on a side of the connecting base; the pressing plate comprises a non-metal layer and a third magnetic unit embedded in the non-metal layer; and a magnetic attraction force between the first magnetic unit and the third magnetic unit keeps the pressing plate in the first position state, and a magnetic attraction force between the second magnetic unit and the third magnetic unit keeps the pressing plate in the second position state.

6. The tray according to claim 5, wherein the first magnetic unit and the second magnetic unit are magnetic pieces, and the third magnetic unit is a metal piece; or the first magnetic unit and the second magnetic unit are metal pieces, and the third magnetic unit is a magnetic piece. ​ ​ 7. The tray according to claim 5, wherein, the first magnetic attraction unit and / or the second magnetic attraction unit is embedded in the connecting seat.

8. The tray of any one of claims 1-4, wherein, Further comprising: a limiting assembly; the limiting assembly comprises a first limiting member and a second limiting member, the first limiting member and the second limiting member are respectively arranged at two ends of the tray plate; the first limiting member and the second limiting member are used to contact two end faces opposite to the battery cell.

9. The tray of any one of claims 1-4, wherein, Further comprising: a positioning member; the positioning member is arranged in the connecting seat; the tray plate is provided with a positioning hole, and the positioning hole extends into the connecting seat, and the positioning hole and the positioning member are coaxially arranged; and in the stacked state of a plurality of the trays, in two adjacent trays, the positioning member of one tray is located in the positioning hole of the other tray.

10. The tray according to any one of claims 1-4, wherein, at least two pressing plate assemblies are arranged on opposite sides of the tray plate, and a plurality of magnetic attraction assemblies are arranged one by one corresponding to a plurality of pressing plate assemblies.

11. The tray according to any one of claims 1-4, 6 and 7, wherein, the tray plate is a non-metal member.

12. A transfer device, characterized by including: the tray according to any one of claims 1 to 11; a clamping mechanism comprising two clamping parts arranged oppositely, for clamping the tray; a transfer mechanism connected with the clamping mechanism, for transferring the tray.

13. A detection device, characterized by including: the transfer device according to claim 12; and a detection device comprising a conveying mechanism and a detection mechanism, wherein the transfer device is used to transfer the tray carrying the battery cell to the conveying mechanism, and the detection mechanism is used to detect the battery cell carried by the tray on the conveying mechanism.

Images