Battery cell tray and detection device

Abstract

The invention relates to a battery cell tray and a detection device. The battery cell tray comprises a tray body and at least one battery cell station module, the at least one battery cell station module is installed on the tray body, each battery cell station module comprises a plurality of carrier rollers which are distributed at intervals, every two adjacent carrier rollers jointly form a battery cell station used for clamping a to-be-detected battery cell, every two adjacent carrier rollers can rotate in the same rotating direction, and the battery cell station is used for clamping the to-be-detected battery cell. And the to-be-detected battery cell is driven to rotate. According to the battery cell tray provided by the embodiment of the invention, the two adjacent carrier rollers rotate in the same rotating direction so as to drive the borne to-be-detected battery cell to rotate and perform all-directional detection on the to-be-detected battery cell. The battery cell station is composed of the two carrier rollers, so that the shielding area of the battery cell station on the battery cell to be detected can be reduced, and the quality of a shot image is improved so as to help quality inspection personnel to screen qualified battery cells. In addition, the battery cell tray can load a plurality of battery cells to be detected at the same time, and all the loaded battery cells to be detected can be detected at the same time, so that the loading capacity of the battery cell tray is enhanced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery cell tray and a detection device. Background Art

[0002] The battery cells need to be inspected before assembly. For example, the transmission principle of X-rays can be used to penetrate the battery cells without damaging them. Based on the different degrees of X-ray absorption by various materials in the battery cells, a clear image of the internal structure of the battery cells can be obtained, thereby quickly detecting defects inside the battery cells to determine whether the battery cells meet the requirements.

[0003] The battery tray is a component used to load the battery cells, and can be used in conjunction with the detection device to improve the effect of battery cell detection. However, the current battery tray can only load a small number of battery cells in a single test, resulting in a longer battery cell detection time. Summary of the invention

[0004] In view of the above problems, the present application provides a battery cell tray and a detection device, which can alleviate the problem of small loading quantity of the battery cell tray.

[0005] In a first aspect, the present application provides a battery cell tray, characterized in that it includes:

[0006] Tray body;

[0007] At least one battery cell station module, mounted on the tray body;

[0008] Among them, each of the battery cell station modules includes a plurality of rollers distributed at intervals, and two adjacent rollers together form a battery cell station for clamping the battery cell to be tested, and the two adjacent rollers can rotate in the same direction and drive the battery cell to be tested to rotate.

[0009] In the technical solution of the embodiment of the present application, two adjacent rollers in the battery tray rotate in the same direction to drive the battery to be tested carried on the two rollers to rotate, so that different parts of the battery to be tested are exposed to the avoidance channel formed between the two rollers in turn, thereby performing a full range of inspection on the battery to be tested. Among them, the battery station is set to be composed of two rollers, which can reduce the shielding area of ​​the battery station on the battery to be tested. When inspecting the battery to be tested, the quality of the captured image can be improved to help quality inspectors screen qualified batteries.

[0010] In addition, the battery cell tray can simultaneously load a plurality of battery cells to be tested, and test all of the battery cells to be tested loaded thereon simultaneously, thereby enhancing the loading capacity of the battery cell tray.

[0011] In some embodiments, the battery tray further comprises a first driving member, which is connected to each of the battery stations and drives the rollers of all the battery stations to rotate synchronously. When the first driving member is in operation, it can drive all the rollers to rotate synchronously and drive the battery cells to be inspected of each battery station to rotate synchronously.

[0012] In some embodiments, the battery tray further includes a transmission member, one end of which is in transmission connection with the first driving member, and the other end of which is in transmission connection with all the rollers of each battery station module. When the first driving member drives the transmission member to operate, the transmission member can drive all the rollers connected thereto to rotate synchronously, so as to drive the batteries to be tested supported by the rollers to rotate synchronously. The self-rotation speeds of the batteries to be tested are consistent, which can improve the consistency of the rotation of the batteries to be tested during testing and reduce the probability of a second test being performed on some batteries to be tested because the test is not completed.

[0013] In some embodiments, all the rollers of each cell station module are distributed along the first direction, and the transmission member is a conveyor belt. In the first direction, the conveyor belt is sequentially connected to each of the rollers. When the transmission member is a conveyor belt, because the conveyor belt itself has good flexibility and elasticity, it can absorb and distribute the impact force generated during the operation of the conveyor belt, making the transmission process as smooth and noiseless as possible.

[0014] In some embodiments, two adjacent battery cell station modules are distributed along a second direction, the second direction intersects with the first direction, the rollers of each battery cell station module correspond one-to-one and are transmission connected along the second direction, and the first driving member is transmission connected to the rollers of one of the battery cell station modules.

[0015] When the first driving member drives one of the battery cell station modules to rotate, it can drive other battery cell station modules to rotate accordingly. All battery cell station modules in the battery cell station modules rotate at the same frequency, and drive the battery cells to be tested carried by them to rotate at the same frequency.

[0016] In some embodiments, the battery cell to be tested rotates around a set axis, and each of the battery cell station modules is provided with a limiting portion, which is movably connected to the tray body and limits the battery cell to be tested along the set axis.

[0017] When the battery cell to be tested is placed on the roller, the limiting part can limit the battery cell to be tested, and the limiting part can change its position according to the length of the battery cell to be tested, so that the battery cell tray can carry battery cells to be tested of different lengths.

[0018] In some embodiments, the limiting portion is extended along the first direction and limits the same end of all the cells to be tested distributed along the first direction. The structure of the limiting portion can be simplified, and a single limiting portion can be used to limit the same end of multiple cells to be tested at the same time.

[0019] In some embodiments, each of the battery cell station modules is further provided with a guide portion, the extension direction of the guide portion is consistent with the extension direction of the roller, the guide portion is located on the tray body, and is movably connected to the limiting portion.

[0020] When the length of the battery cell to be detected changes, the limiting part can be quickly installed at different positions of the guide part 12 to limit the battery cell to be detected.

[0021] In some embodiments, the guide portion is provided with a plurality of fixed positions spaced apart along its extension direction, and the limit portion is connected to one of the fixed positions via a locking member. In this way, the connection between the guide portion and the limit portion is simplified, and the processing difficulty of the guide portion and the limit portion is reduced.

[0022] In some embodiments, the battery tray further includes a second driving member, which is drivingly connected to all the battery station modules and drives all the battery station modules to translate relative to the tray body along the first direction. When the second driving member drives the battery station module to translate along the first direction to a preset position, the battery cells loaded in the battery station can be loaded and unloaded.

[0023] In some embodiments, the tray body is provided with a first matching portion extending along the first direction, and the cell station module is provided with a second matching portion, and the second matching portion and the first matching portion are slidably matched. The cell station module is guided by the first matching portion and the second matching portion, so that the moving speed of the cell station module along the first direction can be accelerated.

[0024] In some embodiments, one of the first matching portion and the second matching portion is a slide rail, and the other is a slide groove, which can simplify the structures of the first matching portion and the second matching portion, and reduce the difficulty of production and processing of the first matching portion and the second matching portion.

[0025] In some embodiments, the battery tray includes a radiation calibration area, which is disposed on the tray body. By judging the change of radiation energy through the radiation calibration area, it is helpful to adjust the radiation energy to an initial state, so as to help quality inspectors screen the battery cells.

[0026] In some embodiments, the tray body is provided with a hollow portion, and the hollow portion forms the radiation calibration area. This arrangement simplifies the structure of the radiation calibration area.

[0027] In a second aspect, the present application provides a detection device, which includes a detection component and the above-mentioned battery cell tray, and the battery cell tray is detachably mounted on the detection component.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0030] Figure 1 Schematic diagram of the structure of the battery tray in some embodiments of the present application.

[0031] Figure 2 A schematic diagram of the rotation direction of the battery cells to be inspected and the rollers of the battery cell tray provided in some embodiments of the present application.

[0032] Figure 3 This is a schematic structural diagram of a battery cell tray in some embodiments of the present application with part of the structure hidden.

[0033] Figure 4 for Figure 3 Schematic diagram of the structure of a single battery cell station module.

[0034] The reference numerals in the specific implementation manner are as follows:

[0035] 100. Battery tray; 200. Battery to be tested;

[0036] 10. Tray body; 11. First matching part; 12. Guide part; 12a. Fixed position; 20. Cell station module; 21. Support roller; 22. Limiting part; 30. First driving member; 40. Second driving member; 41. Screw rod; 50. Transmission member; 60. Radiation correction area;

[0037] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of the present application, if technical terms such as "first" and "second" appear, they are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of the present application, if it appears, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present application, if any, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, if any technical terms such as "installed", "connected", "connected", "fixed" and the like are to be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0045] A battery cell refers to the smallest unit that makes up a battery. A battery cell usually includes an end cap, a shell, a battery cell, and other functional components.

[0046] The end cap and the shell together form the internal environment of the battery cell, which can be used to accommodate battery cells, electrolytes and other components. Usually, the shell has an opening, and the end cap covers the opening. The shell and the end cap can be independent components or integrated. Specifically, the shape of the shell can be determined according to the specific shape and size of the battery cell, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Functional components such as electrode terminals can be provided on the end cap. The electrode terminal can be used to electrically connect to the battery cell for outputting or inputting electrical energy of the battery cell. The battery cell is the component in the battery cell where electrochemical reactions occur. One or more battery cells can be contained in the shell.

[0047] The battery cell is mainly formed by winding or stacking the positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the battery cell, and the parts of the positive and negative electrode sheets without active materials each constitute the tabs. The positive tab and the negative tab can be located at one end of the main body or at both ends of the main body respectively. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop.

[0048] During the battery production process, the battery cells are usually placed in a specific environment for a certain period of time to undergo a series of tests, for example, to detect defects in the battery cells.

[0049] Typically, a battery cell testing device is used to provide a corresponding specific environment. A battery cell tray is set inside the battery cell testing device, and the battery cells are placed on the battery cell tray. The rays emitted by the radiation source mechanism pass through the battery cells placed on the battery cell tray, and form an image showing the internal structure of the battery cell on the imaging surface to determine whether there are defects inside the battery cell, thereby determining whether the battery cell meets the requirements.

[0050] During the inspection process, because the operating area of ​​the radiation source mechanism is limited, different parts of the battery cell need to be rotated into the operating area of ​​the radiation source mechanism to perform a full range of inspections on the battery cell, thereby improving the accuracy of the battery cell inspection. However, the current battery cell tray has a function of driving the battery cell to rotate relative to the battery cell tray, but its loading capacity is poor, and only a small number of battery cells can be loaded in a single inspection, resulting in a long battery cell inspection time.

[0051] Based on the above considerations, in order to improve the loading capacity of the battery tray, the embodiment of the present application provides a battery tray. The battery tray is provided with at least one battery station module, each battery station module includes a plurality of battery stations, and the battery cells in each battery station can be self-rotated under the drive of the driving component, which helps to improve the loading capacity of the battery tray.

[0052] The battery cell tray provided in the embodiment of the present application is mainly used to place battery cells. The battery cells have various shapes, such as cylinders, flat batteries, cuboids or other shapes.

[0053] Taking a cylinder as an example, a cylindrical battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., but the embodiments of the present application are not limited to this.

[0054] The cylindrical battery cell includes a shell, an electrode assembly and an electrolyte, and the shell is used to contain the electrode assembly and the electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The cylindrical battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.

[0055] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0056] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic structural diagram of a battery cell tray 100 provided in some embodiments of the present application. Figure 2 Schematic diagram of the rotation direction of the battery cell 200 to be inspected and the roller 21 of the battery cell tray 100 provided in some embodiments of the present application.

[0057] like Figure 1 As shown, the cell tray 100 provided in some embodiments of the present application includes a tray body 10 and at least one cell station module 20, and at least one cell station module 20 is installed on the tray body 10. Among them, each cell station module 20 includes a plurality of rollers 21 distributed at intervals, and two adjacent rollers 21 together form a cell station for clamping the cell 200 to be tested, and the two adjacent rollers 21 can rotate in the same direction and drive the cell 200 to be tested to rotate.

[0058] The cell tray 100 can be installed in a lead room, which is a radiation protection device made of lead. For example, the cell tray 100 can be installed in the lead room through a lead room fixing member.

[0059] The orthographic projection shape of the tray body 10 in the thickness direction of the tray may be a square frame with one side open, and the thickness direction of the tray body 10 may be parallel to its gravity direction.

[0060] The battery cell station module 20 is arranged on the tray body 10 and can be located in the recessed area of ​​the tray body 10. The battery cell station module 20 may include a frame, and the orthographic projection of the frame in the thickness direction of the tray may be rectangular. A plurality of battery cell stations may be provided inside the rectangular frame, and the battery cell stations may be positioning members to position the battery cell 200 to be tested and to drive the battery cell 200 to be tested to rotate relative to the rectangular frame. Each battery cell station may be distributed along the first direction X or the second direction Y. Among them, the first direction X, the second direction Y and the thickness direction intersect each other and are not coplanar, for example, the first direction X, the second direction Y and the thickness direction may be perpendicular to each other.

[0061] When there are multiple cell station modules 20, two adjacent cell station modules 20 may be distributed along the first direction X or along the second direction Y. Two adjacent cell station modules 20 may be transmission connected and driven by a driving device, or each cell station module 20 may be transmission connected to a driving device.

[0062] The roller 21 can be extended along the second direction Y, and its shape can be roughly cylindrical. Two adjacent rollers 21 are arranged at intervals and can form a clamping space (i.e., a battery cell station), wherein the avoidance channel formed between the two adjacent rollers 21 can expose some parts of the battery cell 200 to be inspected, so that the rays can pass through the exposed parts of the battery cell 200 to be inspected and inspect the exposed parts.

[0063] like Figure 2 As shown, when the battery cell 200 to be tested is placed in the battery cell station, it can contact the surface of the two rollers 21, and the two rollers 21 rotate synchronously in the same direction. Friction can be generated between the battery cell 200 to be tested and the rollers 21, and the battery cell 200 to be tested can rotate in situ under the action of the friction. For example, when the two rollers 21 rotate synchronously in the counterclockwise direction, the battery cell 200 to be tested can be driven to rotate in the clockwise direction. In this way, different parts of the battery cell 200 to be tested are rotated to the avoidance channel in turn to be exposed to a state where rays can pass through, until all parts of the battery cell 200 to be tested are rotated to the avoidance channel.

[0064] In summary, when the battery cell tray 100 provided in some embodiments of the present application is working, the two adjacent rollers 21 rotate in the same direction to drive the battery cell 200 to be inspected carried on the two rollers 21 to rotate, so that different parts of the battery cell 200 to be inspected are exposed to the avoidance channel formed between the two rollers 21 in turn, thereby performing a full range of inspection on the battery cell 200 to be inspected. Among them, the battery cell station is set to be composed of two rollers 21, which can reduce the shielding area of ​​the battery cell 200 to be inspected by the battery cell station, and when inspecting the battery cell 200 to be inspected, the quality of the captured image can be improved to help quality inspectors screen qualified batteries.

[0065] In addition, the battery cell tray 100 can simultaneously load a plurality of battery cells 200 to be inspected, and can simultaneously inspect all of the battery cells 200 to be inspected, thereby enhancing the loading capacity of the battery cell tray 100 .

[0066] like Figure 1 As shown, in some embodiments, the battery tray 100 further includes a first driving member 30, which may be, but is not limited to, a motor, a hydraulic cylinder, or a pneumatic cylinder. The first driving member 30 may be mounted on the tray body 10, and is connected to each battery station drivingly, and can drive each roller 21 of all battery stations to rotate synchronously.

[0067] The relationship between the number of first driving members 30 and the number of battery cell station modules 20 can be one to one or one to multiple, that is, one first driving member 30 drives the rollers 21 in one battery cell station module 20 to rotate synchronously, or one first driving member 30 drives the rollers 21 in all battery cell station modules 20 to rotate synchronously.

[0068] For example, in Figure 1 In the example shown, the cell tray 100 includes two cell station modules 20 and a first driving member 30. The cell stations of the two cell station modules 20 correspond to each other and are connected in a transmission manner. The first driving member 30 can be connected in a driving manner to one of the cell station modules 20. While the first driving member 30 drives the rollers 21 of the cell station module 20 to rotate synchronously, the rollers 21 of the other cell station module 20 can also be driven to rotate synchronously through the cell station module 20.

[0069] Figure 3 This is a schematic structural diagram of a battery cell tray 100 in some embodiments of the present application, with some structures omitted.

[0070] like Figure 1 and Figure 3 As shown, in some embodiments, the cell tray 100 further includes a transmission member 50, which may be, but is not limited to, a gear assembly or a belt. One end of the transmission member 50 may be transmission-connected to the first driving member 30, and the other end may be transmission-connected to all the rollers 21 of each cell station module 20.

[0071] When the first driving member 30 drives the transmission member 50 to operate, the transmission member 50 can drive all the rollers 21 connected thereto to rotate synchronously, so as to drive each battery cell 200 to be inspected located at each battery cell station to rotate synchronously. The rotation speed of each battery cell 200 to be inspected is consistent, which can improve the consistency of each battery cell 200 to be inspected during inspection and reduce the probability of a second inspection being performed on some battery cells 200 to be inspected because the inspection has not been completed.

[0072] Furthermore, if Figure 3 As shown, all the rollers 21 of each battery cell station module 20 are distributed along the first direction X, and the transmission member 50 can be a conveyor belt (such as a belt). In the first direction X, the conveyor belt can be sequentially connected to each roller 21 for transmission.

[0073] When the number of the battery cell station module 20 is one, the connection method between the belt and the battery cell station module 20 is as follows.

[0074] Please refer to Figure 3 The cell station module 20 includes 11 rollers 21 arranged at intervals along the first direction X, and the circumferential surface of the end portion on the same side of each roller 21 can contact the surface of the belt. When the first driving member 30 drives the belt to rotate, the belt drives the rollers 21 connected thereto to rotate synchronously, and the rollers 21 thereby drive the supported cells 200 to be tested to rotate synchronously. Because the belt itself has good flexibility and elasticity, it can absorb and distribute the impact force generated during the operation of the belt, making the transmission process as smooth and noiseless as possible.

[0075] When there are multiple battery cell station modules 20 , the connection between the belt and the battery cell station module 20 is as follows.

[0076] Two adjacent battery cell station modules 20 can be distributed along the second direction Y, which intersects the first direction X. The rollers 21 of each battery cell station module 20 correspond one to one along the second direction Y and are transmission connected. The first driving member 30 is transmission connected to the rollers 21 of one of the battery cell station modules 20.

[0077] For example, Figure 3 As shown, the cell tray 100 includes two cell station modules 20 distributed along the second direction Y, each cell station module 20 can include 11 rollers 21, and the entire cell tray 100 can carry up to 20 cells 200 to be tested at a time. The rollers 21 of each cell station module 20 correspond one to one in the second direction Y, that is, two adjacent rollers 21 distributed in the second direction Y are on the same straight line, and the two rollers 21 can be connected by a coupling. The belt can be connected to the rollers 21 of one of the cell station modules 20, specifically, the surface of the belt contacts the circumferential surface of the end portion located on the same side of each roller 21.

[0078] When the first driving member 30 drives the belt to run, the belt can drive the rollers 21 in one of the cell station modules 20 to rotate synchronously. At this time, the rollers 21 in the cell station module 20 drive the corresponding rollers 21 in another cell station module 20 to rotate synchronously through the coupling. In this way, each cell station module 20 in each cell station module 20 rotates at the same frequency, and drives each cell 200 to be tested carried by it to rotate at the same frequency.

[0079] The above arrangement can simplify the connection between the rollers 21 of two adjacent battery cell station modules 20 while realizing the synchronous rotation of all the rollers 21 .

[0080] In some embodiments, Figure 3 As shown, the battery cell 200 to be tested rotates around the set axis, and each battery cell station module 20 is provided with a limiting portion 22, which can be movably connected to the tray body 10 and limit the battery cell 200 to be tested along the set axis. In other words, the limiting portion 22 can limit the battery cell 200 to be tested in the second direction Y.

[0081] The limiting portion 22 may be, but is not limited to, a limiting block, which may be snap-fitted or threadedly connected to the tray body 10 and may be made of a deformable material such as polyester fiber. When the limiting portion 22 abuts against the battery cell 200 to be tested, the limiting portion 22 may properly protect the tabs of the battery cell 200 to be tested, thereby reducing the probability of damage to the tabs.

[0082] When the battery cell 200 to be inspected is placed on the roller 21 , along the second direction Y, two ends of the battery cell 200 to be inspected abut against a limiting portion 22 respectively, so as to limit the battery cell in the second direction Y.

[0083] When the length of the battery cell 200 to be detected changes, for example, if the length of the battery cell 200 to be detected becomes shorter, the distance between the two limiting parts 22 can be shortened so that each limiting part 22 abuts against one end of the battery cell 200 to be detected, thereby limiting the battery cells 200 to be detected of various lengths. In other words, the limiting part 22 can change its position according to the length of the battery cell 200 to be detected, so that the battery cell tray 100 can carry the battery cells 200 to be detected of different lengths.

[0084] In some embodiments, one limiting portion 22 limits one end of one battery cell, while in other embodiments, one limiting portion 22 can limit one ends of multiple battery cells at the same time.

[0085] Figure 4 This is a schematic diagram of the structure of a single battery cell workstation module in some embodiments of the present application.

[0086] like Figure 4 As shown, the limiting portion 22 can be extended along the first direction X, and the orthographic projection of the limiting portion 22 on the tray body 10 can be a straight line or an L shape, etc. In the present application, the limiting portion 22 can limit the same end of all the battery cell stations distributed along the first direction X. The above arrangement can simplify the structure of the limiting portion 22, and a single limiting portion 22 can be used to simultaneously limit the same end of the battery cells 200 to be tested in multiple battery cell stations.

[0087] Please continue reading Figure 4 In some embodiments, each cell station module 20 is further provided with a guide portion 12, and the extension direction of the guide portion 12 is consistent with the extension direction of the roller 21. The guide portion 12 is located on the tray body 10 and can be movably connected with the limiting portion 22. For example, the guide portion 12 and the limiting portion 22 can be connected by a snap connection or a bolt connection, etc., which is convenient for disassembly and assembly.

[0088] For example, Figure 4 As shown, the structure of the guide portion 12 can be in the shape of an elongated strip. The guide portion 12 can be located on one side of the placement portion (such as the roller 21). It can be a guide rail extending along the second direction Y. When the length of the battery cell 200 to be tested changes, the limiting portion 22 can be quickly installed at different positions of the guide portion 12 to limit the battery cell 200 to be tested.

[0089] Specifically, Figure 4As shown, the guide portion 12 is provided with a plurality of fixed positions 12a spaced apart along its extension direction, and the limiting portion 22 is connected to one of the fixed positions 12a through a locking member. For example, the guide portion 12 may be provided with limiting screw holes spaced apart along the second direction Y, and a single limiting screw hole may form a fixed position 12a. The limiting portion 22 may be installed on the guide portion 12 through a locking member such as a screw, and abut against the battery cell 200 to be tested. The above arrangement simplifies the connection between the guide portion 12 and the limiting portion 22, and reduces the processing difficulty of the guide portion 12 and the limiting portion 22.

[0090] In some embodiments, Figure 1 As shown, the battery tray 100 further includes a second driving member 40 , which is drivingly connected to all the battery cell station modules 20 and drives all the battery cell station modules 20 to translate along the first direction X relative to the tray body 10 .

[0091] The second driving member 40 may be, but is not limited to, a motor, a hydraulic cylinder or a pneumatic cylinder. The second driving member 40 may be connected to the cell station module 20 through a screw rod 41. The number of the second driving members 40 and the number of the cell station modules 20 may be one-to-one or one-to-multiple, that is, one second driving member 40 drives one cell station module 20 to translate along the first direction X, or one second driving member 40 drives multiple cell station modules 20 to translate along the first direction X at the same time.

[0092] For example, in Figure 1 In the example shown, the battery cell tray 100 includes two battery cell station modules 20, and the two battery cell station modules 20 are transmission connected. The second driving member 40 is drivingly connected to one of the battery cell station modules 20. While the second driving member 40 drives the battery cell station module 20 to translate along the first direction X, it can drive the other battery cell station module 20 to translate along the first direction X through the battery cell station module 20.

[0093] When the second driving member 40 drives the cell station module 20 to move away from the tray body 10 to the loading and unloading position (the position for taking out or placing the cell 200 to be tested), the cell tray 100 is in an idle state, and the cell 200 to be tested in the cell station can be loaded and unloaded. When the cell station module 20 is completely located in the recessed area of ​​the tray body 10, the cell 200 to be tested on the cell tray 100 can be tested.

[0094] Please continue to refer to Figure 1In some embodiments, the tray body 10 is provided with a first matching portion 11 extending along the first direction X, and the battery cell station module 20 is provided with a second matching portion, and the second matching portion and the first matching portion 11 are slidably matched. The first matching portion 11 and the second matching portion can be, but are not limited to, a slide rail, a slide groove, or a slider. The first matching portion 11 and the second matching portion are used to guide the battery cell station module 20, so that the moving speed of the battery cell station module 20 along the first direction X can be accelerated.

[0095] Specifically, in some embodiments, one of the first matching portion 11 and the second matching portion is a slide rail, and the other is a slide groove. Figure 1 In the example shown, the tray body 10 may be provided with long strip slide rails extending along two first directions X and spaced apart. The two battery cell station modules 20 are considered as a whole, and the two slide rails may be spaced apart on both sides of the whole along the second direction Y. Each battery cell station module 20 is provided with a slide groove that slides with the slide rail. In this way, the two battery cell station modules 20 can move along the first direction X at the same time, and one of the first matching part 11 and the second matching part is provided with a slide rail, and the other is provided with a slide groove, which can simplify the structure of the first matching part 11 and the second matching part, and reduce the difficulty of production and processing of the first matching part 11 and the second matching part.

[0096] Normally, after a battery cell inspection device has been used for a period of time, the energy of the rays it emits will change. When the rays with changed energy pass through the battery cell 200 to be inspected and form an image of the inside of the battery cell 200 to be inspected, the image is different from the image formed by the original rays, which can affect the quality inspectors' judgment on the quality of the battery cell 200 to be inspected, resulting in phenomena such as failure to discover defective batteries.

[0097] In order to help quality inspectors screen the cells, a radiation calibration area 60 may be provided on the cell tray 100. In some embodiments, the radiation calibration area 60 may be provided on the tray body 10, and the radiation energy change is determined by the radiation calibration area 60, and the radiation energy is adjusted to the initial state. Figure 1 As shown, the tray body 10 is provided with a hollow portion, and the hollow portion can form a radiation correction area 60 .

[0098] After the battery cell inspection device has been used for a period of time, the radiation emission port of the radiation source mechanism can be directed toward the radiation calibration area 60, and the radiation emitted by the radiation source mechanism can pass through the radiation calibration area 60 and form an image. The user can compare the formed image with the image formed by the radiation of the initial energy to adjust the energy of the radiation. This is repeated, and after the battery cell inspection device has been used for a period of time, the radiation calibration area 60 can be used to adjust the energy of the radiation emitted by the battery cell inspection device.

[0099] In addition, some embodiments of the present application further provide a detection device. The detection device includes a detection component and the above-mentioned battery tray 100, and the battery tray 100 is detachably mounted on the detection component. The introduction of the battery tray 100 can be referred to the above records, and will not be repeated here.

[0100] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A battery tray, characterized in that: include: Tray body (10); At least one battery cell station module (20) installed on the tray body (10); Wherein, each of the battery cell station modules (20) comprises a plurality of rollers (21) distributed at intervals, and two adjacent rollers (21) together form a battery cell station for clamping the battery cell (200) to be tested, and the two adjacent rollers (21) can rotate in the same direction and drive the battery cell (200) to be tested to rotate.

2. The battery cell tray according to claim 1, characterized in that: The battery cell tray (100) further comprises a first driving member (30), wherein the first driving member (30) is drivingly connected to each of the battery cell stations and drives the rollers (21) of all the battery cell stations to rotate synchronously.

3. The battery cell tray according to claim 2, characterized in that: The battery cell tray (100) further comprises a transmission member (50), one end of which is transmission-connected to the first driving member (30), and the other end of which is transmission-connected to all the rollers (21) of each battery cell station module (20).

4. The battery cell tray according to claim 3, characterized in that: All the rollers (21) of each of the battery cell station modules (20) are distributed along a first direction (X), and the transmission member (50) is a conveyor belt. In the first direction (X), the conveyor belt is sequentially connected to each of the rollers (21) in a transmission manner.

5. The battery cell tray according to claim 4, characterized in that: Two adjacent battery cell station modules (20) are distributed along a second direction (Y), the second direction (Y) intersects with the first direction (X), the rollers (21) of each battery cell station module (20) correspond one to one along the second direction (Y) and are transmission-connected, and the first driving member (30) is transmission-connected to the rollers (21) of one of the battery cell station modules (20).

6. The battery cell tray according to claim 1, characterized in that: The battery cell (200) to be tested rotates around a set axis, and each of the battery cell workstation modules (20) is provided with a limiting portion (22). The limiting portion (22) is movably connected to the tray body (10) and limits the battery cell (200) to be tested along the set axis.

7. The battery cell tray according to claim 6, characterized in that: The limiting portion (22) is extended along the first direction (X) and limits the same end of all the battery cells (200) to be tested distributed along the first direction (X).

8. The battery cell tray according to claim 6, characterized in that: Each of the battery cell station modules (20) is also provided with a guide portion (12), the extension direction of the guide portion (12) being consistent with the extension direction of the roller (21), the guide portion (12) being located on the tray body (10) and being movably connected to the limiting portion (22).

9. The battery cell tray according to claim 8, characterized in that: The guide portion (12) is provided with a plurality of fixed positions (12a) spaced apart along its extension direction, and the limiting portion (22) is connected to one of the fixed positions (12a) via a locking member.

10. The battery cell tray according to any one of claims 1 to 9, characterized in that: The battery cell tray (100) further comprises a second driving member (40), which is drivingly connected to all the battery cell workstation modules (20) and drives all the battery cell workstation modules (20) to translate relative to the tray body (10) along a first direction (X).

11. The battery cell tray according to claim 10, characterized in that: The tray body (10) is provided with a first matching portion (11) extending along the first direction (X), and the battery cell station module (20) is provided with a second matching portion, and the second matching portion and the first matching portion (11) are slidably matched.

12. The battery cell tray according to claim 11, characterized in that: One of the first matching portion (11) and the second matching portion is a slide rail, and the other is a slide groove.

13. The battery cell tray according to any one of claims 1 to 9, characterized in that: The battery cell tray (100) comprises a radiation calibration area (60), and the radiation calibration area (60) is arranged on the tray body (10).

14. The battery cell tray according to claim 13, characterized in that: The tray body (10) is provided with a hollow portion, and the hollow portion forms the radiation correction area (60).

15. A detection device, characterized in that: It comprises a detection component and a cell tray (100) according to any one of claims 1 to 14, wherein the cell tray (100) is detachably mounted on the detection component.

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