Bearing device and bearing assembly

Abstract

The utility model discloses a bearing device and a bearing assembly. The bearing device comprises a supporting plate, a magnetic part and a pressing part. An embedded groove is formed in the supporting plate and used for containing a finished bottom battery piece before the coating process. The magnetic pieces are installed on the supporting plate, and the magnetic pieces are arranged on the two opposite sides of a groove opening of the embedded groove. The pressing pieces and the magnetic pieces are correspondingly arranged, the pressing pieces are magnetically connected to the corresponding magnetic pieces, and at least part of each pressing piece extends into the corresponding embedded groove to press the edge of the finished bottom battery piece. Due to the fact that the pressing piece and the magnetic piece are magnetically attracted, under the magnetic action of the pressing piece with the light weight and the magnetic piece, stable attachment of the pressing piece with the light weight and the finished bottom battery piece can be achieved, the finished bottom battery piece can be limited in the embedded groove to be subjected to film coating, and therefore even under the conditions that the bottom battery becomes thick and the flexibility becomes poor, the bottom battery piece can be stably attached to the bottom battery piece. And the light-weight pressing piece acts on the finished bottom battery piece, so that the finished bottom battery piece can be prevented from being cracked, and the subsequent coating process of the finished bottom battery piece is ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of stacked solar cell coating processing, and specifically relates to a carrying device and a carrying assembly. Background Art

[0002] Crystalline silicon-perovskite tandem cells are based on crystalline silicon heterojunction bottom cells and are finished cells made from ultra-thin velvet silicon wafers through multiple process steps.

[0003] After the textured silicon wafer has been deposited and coated multiple times, the bottom cell becomes thicker. And due to the presence of structures such as the metal gate, the flexibility of the bottom cell becomes poorer, the bottom cell becomes more brittle and easy to break, affecting the subsequent coating process of the bottom cell. Utility Model Content

[0004] In order to solve the technical problem that the bottom cell is fragile in the coating process of crystalline silicon-perovskite stacked cells in the related art and affects the subsequent coating process of the bottom cell, the present application provides a carrying device and a carrying assembly.

[0005] A first aspect of the present application provides a carrying device, the carrying device comprising:

[0006] A support plate is provided with an embedded groove;

[0007] A magnetic member is mounted on the support plate, and the magnetic member is disposed on opposite sides of the slot of the embedded slot;

[0008] A clamping member is arranged corresponding to the magnetic member, the clamping member is magnetically connected to the corresponding magnetic member, and at least a portion of the clamping member extends into the embedded groove.

[0009] In some embodiments, a limiting member is further provided on the support plate, the limiting member is provided on the outer side of the embedded groove, and the pressing member is connected to the limiting member.

[0010] In some embodiments, the stopper comprises:

[0011] A plurality of limit posts are respectively mounted on the support plates and located outside the notches;

[0012] The pressing member is provided with a plurality of limiting holes, and the limiting holes are sleeved on the limiting columns and are magnetically attracted to the magnetic member.

[0013] In some embodiments, the magnetic member includes a plurality of magnets, and at least some of the magnets have different areas of magnetic attraction with the pressing member.

[0014] In some embodiments, a magnet groove is provided on the support plate, and the magnet is installed in the magnet groove.

[0015] In some embodiments, the magnet is removably mounted in the magnet slot.

[0016] In some embodiments, an operation opening is formed on the side wall of the embedded groove.

[0017] In some embodiments, a plurality of the embedded grooves are provided on the support plate, and the plurality of the embedded grooves are arranged in a matrix;

[0018] The plurality of magnetic members located on the same side of the embedded groove on the same straight line are magnetically connected to the same pressing member.

[0019] In some embodiments, the pressing member is located between two adjacent embedded grooves along a preset direction, and opposite sides of the pressing member extend into the two embedded grooves respectively.

[0020] A second aspect of the present application provides a bearing assembly, comprising:

[0021] A plurality of the above-mentioned carrying devices are arranged in an interleaved and stacked manner.

[0022] In some embodiments, two adjacent supporting devices are connected via a plurality of connecting columns.

[0023] According to the carrying device and the carrying assembly provided by one or more embodiments of the present application, the carrying device includes a support plate, a magnetic member and a clamping member. The support plate is provided with an embedded groove, and the embedded groove is used to place the finished bottom battery cell before the coating process. The magnetic member is installed on the support plate, and magnetic members are arranged on opposite sides of the notch of the embedded groove. The clamping member and the magnetic member are arranged correspondingly, and the clamping member is magnetically connected to the corresponding magnetic member, and at least part of the clamping member extends into the embedded groove to clamp the edge of the finished bottom battery cell. Since the clamping member and the magnetic member are magnetically attracted, the lightweight clamping member can be used under the magnetic effect of the magnetic member to achieve stable bonding with the finished bottom battery cell to confine the finished bottom battery cell to the embedded groove for coating. In this way, even in the case where the bottom battery becomes thicker and the flexibility becomes worse, the lightweight clamping member can be tightly fitted with the finished bottom battery cell to prevent the finished bottom battery cell from slipping out of the embedded groove. When the light-weight pressing member acts on the finished bottom battery cell, it can prevent the finished bottom battery cell from cracking, ensure the integrity of the finished bottom battery cell, and ensure that the finished bottom battery cell can be subsequently subjected to a coating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a carrying device (omitting a pressing member) in one or more embodiments of the present application;

[0025] Figure 2 A schematic diagram of the structure of a carrying device in one or more embodiments of the present application;

[0026] Figure 3It is a schematic structural diagram of a carrying device (omitting all pressing members) in one or more embodiments of the present application;

[0027] Figure 4 It is a schematic diagram of the structure of a clamping member in one or more embodiments of the present application.

[0028] Description of reference numerals:

[0029] 10. support plate; 11. embedded groove; 111. notch; 12. magnet slot; 13. operation port;

[0030] 20. Magnetic part; 30. Pressing part; 31. Limiting hole; 40. Limiting column; 50. Avoiding groove;

[0031] 60. Connecting groove; 70. Connecting column; 80. Pad. DETAILED DESCRIPTION

[0032] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] Crystalline silicon-perovskite tandem cells are a new type of solar cell structure that combines crystalline silicon solar cells with perovskite solar cells, giving full play to the advantages of both types of cells. Crystalline silicon solar cells have the advantages of high stability, low cost and long life, and are currently the most important type of solar cells on the market; while perovskite solar cells have the advantages of high photoelectric conversion efficiency, low preparation cost and flexibility, and are considered to be the future development direction of solar cells.

[0034] As the first generation of solar cells, crystalline silicon solar cells have a relatively mature technology development. As the photoelectric conversion efficiency approaches its limit, the marginal cost of improving the efficiency of crystalline silicon solar cells gradually becomes higher. Perovskite cells are currently a new generation of high-efficiency thin-film solar cells, with the characteristics of simple preparation process and good tolerance to defects. The process of perovskite cells is simpler than that of crystalline silicon cells. The cost of equipment, superimposed raw materials and preparation in the process of perovskite cells is lower; in terms of material prices, silicon materials are expensive and perovskites are relatively cheap. Perovskite cells can reduce the cost per kilowatt-hour compared to crystalline silicon cells.

[0035] Crystalline silicon-perovskite tandem cells have received research attention following perovskite cells. By combining crystalline silicon cells and perovskite cells, the spectral response of the cells can be effectively broadened. Compared with crystalline silicon cells or perovskite cells, they have higher ultimate photoelectric conversion efficiency.

[0036] Crystalline silicon-perovskite tandem cells are based on silicon heterojunction bottom cells. Through pyramid texture modulation technology and high-efficiency interface passivation technology, research on high-efficiency crystalline silicon-perovskite tandem cells has been carried out, solving problems such as perovskite texture film formation and tandem cell opening voltage loss. Crystalline silicon-perovskite tandem cells can significantly improve the efficiency of tandem cells with a relatively small increase in material costs, and have strong market competitiveness.

[0037] Crystalline silicon-perovskite stacked cells use crystalline silicon heterojunction bottom cells, which are finished bottom cells made from ultra-thin velvet silicon wafers through multiple processes. The velvet silicon wafers become thicker after multiple deposition and coating, and due to the presence of structures such as metal gates, the flexibility of the finished bottom cell becomes worse, becoming more brittle and easy to break, affecting the subsequent coating process of the finished bottom cell, and the coating wrapping phenomenon is more serious.

[0038] In order to make the coating process of crystalline silicon-perovskite tandem cells effective, the following problems need to be solved in view of the defects of material properties of the finished bottom cell:

[0039] 1. The finished bottom battery cell is thick and has poor flexibility, which affects the subsequent coating process.

[0040] 2. The finished bottom cell is light in weight and is prone to sliding in the vacuum environment of the coating process.

[0041] 3. In the coating process of the finished bottom cell, serious wrap-around coating is likely to occur on the back side (non-coated side) of the finished bottom cell, affecting the photoelectric conversion efficiency.

[0042] 4. When the finished bottom cell is coated, a frame is usually used to press on the finished bottom cell to position the finished bottom cell. Due to the difference in thermal expansion coefficients of the back electrode of the finished bottom cell and the pressure of the frame located on the top of the finished bottom cell, it is easy to produce fragments.

[0043] 5. The frame is usually made of metal. Under the action of gravity, the frame is prone to produce shear stress on the corners of the finished bottom battery cell, causing the finished bottom battery cell to crack.

[0044] 6. In order to reduce the processing accuracy of the frame and the influence of deformation under heating, the frame is relatively high in the vertical direction. When the finished bottom cell is coated, the frame is relatively high in the vertical direction, which affects the smooth flow of the gas field, hinders the source diffusion in the vacuum environment, and easily causes coating dead zone and uneven coating.

[0045] 7. During the coating process of the finished bottom cell, it is necessary to adjust the edge width of the edge frame on the finished bottom cell. In order to improve the accuracy of the edge width, multiple adjustments are required, which is relatively cumbersome and affects the coating process rhythm.

[0046] 8. When the finished bottom battery cells are plated, a single-layer coating process is usually used, which has low growth efficiency and affects the batch coating growth of the finished bottom battery cells.

[0047] In order to solve the above technical problems, the present application provides a bearing device and a bearing assembly.

[0048] The first aspect of the present application provides a carrying device, which is used to carry finished bottom battery cells so as to facilitate the coating process of the finished bottom battery cells. Figures 1 to 4 The carrying device includes a support plate 10, a magnetic member 20 and a pressing member 30.

[0049] The support plate 10 is used to place the finished bottom battery cell before the coating process, so as to facilitate the coating of the finished bottom battery cell. The material of the support plate 10 can be aluminum, which is light, easy to cut and process, and can ensure hardness. In some embodiments, the support plate 10 can also be made of other materials, which can be set according to actual needs, and this application does not limit it.

[0050] The support plate 10 is usually in the shape of a rectangular plate, and one side of the support plate 10 can be cut to form an embedded groove 11 of a set size. The set size can be determined according to the size of the finished bottom battery cell, and this application does not limit it. When the finished bottom battery cell is a rectangular parallelepiped, the notch 111 of the embedded groove 11 is a rectangle, and the length and width of the notch 111 can be set according to the length and width adaptability of the finished bottom battery cell, and the groove depth of the embedded groove 11 can be set according to the height of the battery cell.

[0051] In some embodiments, the shape of the pallet 10 may be determined according to the clamp space used to clamp the pallet 10 , which is not limited in the present application.

[0052] The magnetic part 20 has magnetism to be magnetically attracted to the clamping part 30. The magnetic part 20 is installed on the support plate 10, and the magnetic part 20 is provided on both opposite sides of the notch 111 of the embedded groove 11 in the width direction. The magnetic part 20 can be a magnet, such as a permanent magnet and an electromagnet. When the magnetic part 20 is a permanent magnet, it can directly use its own magnetism to be magnetically attracted to the clamping part 30, and use a pulling force to separate the clamping part 30 from the permanent magnet; when the magnetic part 20 is an electromagnet, the magnetism of the electromagnet can be controlled by turning the power on and off. When the electromagnet is powered on, the clamping part 30 can be magnetically attracted to the electromagnet; when the electromagnet is powered off, the electromagnet is demagnetized, which facilitates the separation of the clamping part 30 from the electromagnet. In some embodiments, the magnetic part 20 can also be other magnets, which can be set according to actual needs, and this application does not limit it.

[0053] The clamping member 30 is used to clamp the finished bottom battery cell. In order to make the clamping member 30 and the magnetic member 20 magnetically attracted to each other, the material of the clamping member 30 can be carbon steel or magnet, etc. The material of the clamping member 30 can be selected according to actual needs, and this application does not limit it.

[0054] The clamping member 30 can be arranged corresponding to the magnetic member 20, and the clamping member 30 is magnetically connected to the corresponding magnetic member 20, and at least part of the clamping member 30 extends into the embedded groove 11 to clamp the edge of the finished bottom battery cell. The pallet 10 is placed horizontally, so the finished bottom battery cell can also be placed horizontally in the embedded groove 11. When the finished bottom battery cell is placed in the embedded groove 11, the coated surface of the finished bottom battery cell and the operating surface of the pallet 10 (the operating surface can be understood as the side where the pallet 10 intersects with the notch 111 of the embedded groove 11) are on the same plane. The clamping member 30 can be set as a long strip, and when the clamping member 30 and the magnetic member 20 are magnetically attracted to each other, the pressing surface of the clamping member 30 fits with the operating surface of the pallet 10. Since the coated surface and the operating surface of the finished bottom battery cell are on the same plane, and the pressing surface of the pressing member 30 fits with the operating surface of the support plate 10, the pressing surface of the pressing member 30 can fit tightly with the coated surface of the finished bottom battery cell under the action of magnetic force. In this way, under the restriction of the embedded groove 11 and the gravity of the pressing member 30, the finished bottom battery cell can be stably restricted in the embedded groove 11, preventing the finished bottom battery cell from sliding out of the embedded groove 11, thereby ensuring the effective positioning of the finished bottom battery cell.

[0055] Since magnetic members 20 are provided on opposite sides of the notch 111 of the embedded groove 11, when the finished bottom battery cell is placed in the embedded groove 11, the pressing member 30 can be used to tightly fit the opposite sides of the finished bottom battery cell to restrict the finished bottom battery cell in the embedded groove 11, thereby improving the positioning stability of the finished bottom battery cell. Even if the pallet 10 tilts or flips during operation or transportation, the finished bottom battery cell can be prevented from sliding out of the embedded groove 11, thereby improving the practicality and applicability of the carrying device.

[0056] Compared with the related art, in which the finished bottom battery cell is directly placed on the operating surface of the support plate 10, the finished bottom battery cell is light in weight and is easy to slide off the operating surface of the support plate 10. In the present application, since the finished bottom battery cell is placed in the embedded groove 11, under the restriction of the embedded groove 11 and the gravity of the pressing member 30, the finished bottom battery cell can be stably restricted in the embedded groove 11, thereby improving the positioning stability of the finished bottom battery cell.

[0057] The pressing member 30 is pressed on the finished bottom battery cell under the magnetic force of the magnetic member 20, and compressive stress is applied to the finished bottom battery cell, so that the finished bottom battery cell can be stably confined in the embedded groove 11. Since the pressing member 30 is only tightly fitted with the opposite sides of the finished bottom battery cell, that is, the pressing member 30 only presses the opposite sides of the finished bottom battery cell, when the finished bottom battery cell is subjected to the coating process, a vacuum pump is used to create a vacuum environment. When the vacuum pump is started or stopped, the finished bottom battery cell encounters a slight disturbance, or when the finished bottom battery cell undergoes thermal expansion during the heating process, the stress can be released through the non-pressed edge positions on the opposite sides of the finished bottom battery cell, thereby reducing the possibility of edge chipping of the finished bottom battery cell.

[0058] Since the clamping piece 30 is in the shape of a long strip and is magnetically attracted to the magnetic piece 20, a lightweight clamping piece 30 can be stably fitted with the finished bottom battery cell under the magnetic effect of the magnetic piece 20. In this way, even if the bottom battery becomes thicker and its flexibility becomes poorer, the lightweight clamping piece 30 can fit tightly with the finished bottom battery cell and the mass of the clamping piece 30 can act on the finished bottom battery cell, thereby preventing the finished bottom battery cell from cracking, ensuring the integrity of the finished bottom battery cell and ensuring that the finished bottom battery cell can be subsequently subjected to a coating process.

[0059] In order to improve the practicality of the clamping member 30, the clamping member 30 is light, soft and extremely thin, and is easy to be magnetically attracted to the magnetic member 20. The clamping member 30 is attached to the coating surface of the finished bottom battery cell. Since the thickness of the clamping member 30 is relatively thin, there is no obvious thickness height difference in the direction perpendicular to the finished bottom battery cell, and no obvious jump difference is presented, which is convenient for the effective flow and diffusion of the coating growth source, and it is not easy to form a coating non-growth area, thereby improving the coating uniformity and stability of the coating surface of the finished bottom battery cell. Compared with the use of a metal pressure frame in the related art, the clamping member 30 in the present application is light in weight, which reduces the risk of fragmentation caused by the self-weight of the clamping member 30, reduces the possibility of fragmentation, and improves the safety and convenience of the overall operation.

[0060] The pressing surface of the pressing member 30 can be in contact with the coated surface of the finished bottom battery cell. Under the action of the magnetic attraction between the pressing member 30 and the magnetic attraction member, the position of the pressing member 30 relative to the finished bottom battery cell can be stabilized, and the pressing surface of the pressing member 30 can be tightly fitted with the finished bottom battery cell. At the same time, under the action of force transmission, the non-coated surface of the finished bottom battery cell (arranged opposite to the coated surface) can also be tightly fitted with the bottom of the embedded groove 11. In this way, when the finished bottom battery cell is subjected to a coating process, taking the atomic layer deposition coating process as an example, it can prevent atoms from moving to the non-coated surface to cause a wrap-around plating phenomenon.

[0061] It should be noted that during the preparation of the transport layer of the perovskite battery, the lower coating growth temperature of the transport layer of the perovskite battery is usually 80°C. Since the magnetic attraction stability between the clamping member 30 and the magnetic member 20 can be ensured in the low temperature section (for example, below 120°C). Then, during the preparation of the transport layer of the perovskite battery, when the coating growth temperature is 80°C, the magnetic attraction effect between the clamping member 30 and the magnetic member 20 can also be ensured, so that the clamping member 30 and the magnetic member are stably attracted, so that the non-coated surface of the finished bottom battery cell is tightly fitted with the bottom of the embedded groove 11, so that when the finished bottom battery cell is subjected to the atomic layer deposition coating process, it can prevent atoms from moving to the non-coated surface to cause wrap-around plating.

[0062] A limiting member (not shown in the figure) is also provided on the support plate 10. The limiting member is provided on the outer side of the embedded groove 11. The clamping member 30 is connected to the limiting member. The limiting member can limit the position of the clamping member 30. The length of the clamping member 30 extending into the embedded groove 11 can be limited by setting the position of the limiting member. In this way, the pressing and positioning of the finished bottom battery cell can be achieved, and the pressing edge width of the finished bottom battery cell by the clamping member 30 can be limited by limiting the position of the limiting member.

[0063] See also Figures 1 to 4 The limiting member includes a plurality of limiting posts 40, which are respectively mounted on the support plate 10 and are located outside the notch 111 and are arranged in sequence along the length direction of the notch 111 of the embedded groove 11. The pressing member 30 is in the shape of a long strip and has a plurality of limiting holes 31 opened along the length direction of the pressing member 30. The limiting holes 31 are sleeved on the limiting posts 40. The position of the pressing member 30 is limited by the limiting posts 40, so that the pressing edge width of the finished bottom battery cell by the pressing member 30 is controlled between 2mm and 5mm, so that the finished bottom battery can be pressed and prevented from slipping off the support plate 10. At the same time, the pressing edge width of 2mm to 5mm, when the finished bottom battery cell is subjected to the atomic layer deposition coating process, for example, the atoms can be drilled into the range corresponding to the pressing edge width between the pressing member 30 and the finished bottom battery for coating. Compared with the related art of adjusting the edge width of the pressure frame on the finished bottom battery cell multiple times to improve the accuracy of the edge width, in the present application, the edge width can be directly limited by the limiting column 40 and the limiting hole 31, without the need for multiple adjustments, and the operation is simple, which can improve the rhythm of the coating process.

[0064] Since the clamping piece 30 is light and soft and is magnetically attracted to the magnetic piece 20, and the magnetic attraction between the clamping piece 30 and the magnetic piece 20 is limited, the atoms can push the clamping piece 30 to move to the side away from the support plate 10 or the clamping piece 30 can be deformed to drill into the pressure edge width between the clamping piece 30 and the finished bottom battery, thereby ensuring the uniformity and effectiveness of the coating on the finished bottom battery cell. This can also prevent the occurrence of wrap-around plating on the finished bottom battery cell, thereby ensuring the coating quality of the finished bottom battery cell.

[0065] It should be noted that the plurality of limit posts 40 also limit the edge pressing width between the clamping member 30 and the finished bottom battery cell in the length direction of the notch 111 of the embedded groove 11, so that the edge pressing width between the clamping member 30 and the finished bottom battery cell in the length direction of the notch 111 of the embedded groove 11 can be equal. At the same time, combined with the flow diffusion and generation capacity of the coating growth source, it can prevent the occurrence of uneven coating and circumferential coating within the edge pressing width range, thereby ensuring the uniformity and effectiveness of the coating of the finished bottom battery cell.

[0066] In some embodiments, a limiting groove may be provided on the outer side of the notch 111, and a limiting protrusion may be provided on the clamping member 30. The clamping member 30 and the magnetic member 20 are positioned by the limiting protrusion and the limiting groove so that the edge pressing width between the clamping member 30 and the finished bottom battery cell is equal along the length direction of the notch 111 of the embedded groove 11.

[0067] In order to release the stress of the finished bottom cell during the coating process, please refer to Figures 1 to 4 , the magnetic member 20 includes a plurality of magnets, which are sequentially arranged along the length direction of the notch 111 of the embedded groove 11, so as to realize the effective adsorption of the pressing member 30 by the pressing member 30 in the length direction, and ensure the stability of the position of the pressing member 30. The magnet is usually columnar, and the heights of the plurality of magnets are the same, and the cross-sectional diameters of the plurality of magnets are different, that is, at least some of the magnets have different areas of magnetic attraction with the pressing member 30, so the magnets at different positions along the length direction of the pressing member 30 have different magnetic attraction forces on the pressing member 30, so when the vacuum pump is started or stopped, the finished bottom battery sheet encounters a slight disturbance; or when the finished bottom battery sheet undergoes thermal expansion during heating, the magnetic attraction between the magnet with a small cross-sectional diameter and the pressing member 30 is weak, so the stress can be released at the position where the magnetic attraction between the pressing member 30 and the magnet is low, so that the finished bottom battery sheet remains in the same plane, which can promote the flow and diffusion of the growth source and ensure the uniformity and effectiveness of the coating of the finished bottom battery sheet.

[0068] It should be noted that the cross-sectional shape of the magnet can also be square, rectangular or triangular, and can be set according to actual needs, and this application does not limit it.

[0069] To facilitate the positioning of the magnets, refer to Figures 1 to 4A magnet groove 12 is provided on the support plate 10 along the length direction of the notch 111 of the embedded groove 11, and the magnet is installed in the magnet groove 12. When the magnet is installed in the magnet groove 12, the magnetic surface of the magnet (the side of the magnet away from the bottom of the magnet groove 12 and the magnetic attraction of the clamping member 30) is in the same plane as the operating surface of the support plate 10. Then, when the finished bottom battery cell can also be placed horizontally in the inner groove, the coating surface of the finished bottom battery cell, the operating surface of the support plate 10 and the magnetic attraction surface of the magnet are in the same plane. In this way, when the clamping member 30 is magnetically attracted to the magnetic attraction surface of the magnet, the clamping member 30 can be simultaneously attached to the operating surface of the support plate 10 and the coating surface of the finished bottom battery cell, so that the finished bottom battery cell can be stably confined in the embedded groove 11, ensuring the effective positioning of the finished bottom battery cell.

[0070] In order to prevent the clamping member 30 from bringing the magnet out of the magnet slot 12, the magnet is detachably mounted in the magnet slot 12. Specifically, the magnet may be provided with a screw-through hole along its axial direction, and a stepped groove is provided near the magnetic attraction surface of the magnet, and a screw is passed through the screw-through hole and is threadedly connected to the bottom of the magnet slot 12, and the screw head is located in the stepped groove, which ensures the stability of the magnet installed in the magnet slot 12 and prevents the clamping member 30 from bringing the magnet out of the magnet slot 12, and also prevents the screw head from affecting the flatness of the clamping member 30.

[0071] In some embodiments, the magnet may also be bonded into the magnet slot 12 and may be configured according to actual needs, which is not limited in this application.

[0072] The finished bottom battery cell can be directly placed in the embedded groove 11 by using tools and its own gravity. In order to facilitate the removal of the finished bottom battery cell from the embedded groove 11, please refer to Figures 1 to 3 An operating opening 13 is provided on the side wall of the embedded groove 11, and the operating opening 13 is connected to the embedded groove 11 and extends to the bottom of the embedded groove 11, so that a tool can be extended into the operating opening 13 to take out the finished bottom battery cell, thereby improving the convenience of taking out the finished bottom battery cell.

[0073] Before taking out the finished bottom battery cell, it is necessary to separate the clamping piece 30 from the magnet so that the clamping piece 30 is separated from the finished bottom battery cell. Since the clamping piece 30 is in the shape of a long strip and is extremely thin, the clamping piece 30 can be stably fitted with the operating surface of the support plate 10 and the magnetic surface of the magnet. In order to facilitate the removal of the clamping piece 30, a clearance groove 50 is provided at the end of the support plate 10 along the length direction of the clamping piece 30, which can be located at one end or both ends of the support plate 10 along the length direction of the clamping piece 30, so that a tool can be inserted into the clearance groove 50 to remove the clamping piece 30, thereby improving the convenience of removing the clamping piece 30.

[0074] In some embodiments, a magnet with strong magnetic properties can also be used to remove the clamping member 30 from the side of the clamping member 30 away from the support plate 10. This can be set according to actual needs and is not limited in this application.

[0075] To improve the coating efficiency of finished bottom cells, please refer to Figures 1 to 4 , a plurality of embedded grooves 11 are provided on the support plate 10, and the plurality of embedded grooves 11 are arranged in a matrix. The same clamping member 30 is magnetically connected, so that the same clamping member 30 can be used to clamp a plurality of finished bottom battery cells, thereby improving the positioning efficiency of the finished bottom battery cells. The clamping member 30 is located between two adjacent embedded grooves 11 along a preset direction (the width direction of the support plate 10), and the opposite sides of the clamping member 30 extend into the two embedded grooves 11 respectively. By setting the width of the clamping member 30 and the distance between the two adjacent embedded grooves 11, the same clamping member 30 can be used to compress two adjacent finished bottom battery cells, thereby improving the positioning efficiency of the finished bottom battery cells.

[0076] In the present application, six embedded grooves 11 can be opened on the same pallet 10, and the six embedded grooves 11 are arranged in two rows, with three embedded grooves 11 in each row. A plurality of magnetic parts 20 are located on the same side of the embedded grooves 11 on the same straight line (the same row). After the six finished bottom battery cells are respectively placed in the six embedded grooves 11, three clamping parts 30 are placed in parallel and pressed on the opposite sides of the pallet 10. The rows of limiting holes 31 on the clamping parts 30 are sleeved on the limiting columns 40 on the pallet 10, and the magnetic suction effect is used to press on the opposite sides of the finished bottom battery cells to prevent the different edge widths on the finished bottom battery cells, resulting in different degrees of circumferential plating or non-growth areas of the coating, thereby improving the coating uniformity and effectiveness of the finished bottom battery cells.

[0077] In some embodiments, a plurality of embedded grooves 11 may also be provided on the support plate 10, which may be provided according to actual needs and are not limited in this application.

[0078] The second aspect of the present application further provides a load-bearing assembly, which includes a plurality of the above-mentioned load-bearing devices, wherein the plurality of load-bearing devices are arranged in an interleaved and stacked manner, and two adjacent trays are connected by a plurality of connecting columns 70 .

[0079] Specifically, the load-bearing device includes a connecting column 70, which is connected to the side of the pallet 10 away from the embedded groove 11, and a connecting groove 60 is provided on the side of the pallet 10 away from the connecting column 70. The connecting column 70 and the connecting groove 60 are plugged into the connecting groove 60 corresponding to the connecting column 70 in a direction perpendicular to the pallet 10. Two adjacent load-bearing devices are connected to the connecting groove 60 through the connecting column 70. In the present application, the connecting column 70 can be arranged in two rows and respectively located on both sides close to the width direction of the pallet 10, and three connecting columns 70 can be arranged in each row. The connecting groove 60 can be arranged with six connected in two rows, corresponding to the positions of the connecting column 70, so that the load-bearing devices of two adjacent layers can be easily connected through the connecting column 70 and the connecting groove 60.

[0080] The bearing device also includes a pad 80, which can be set in the shape of a long strip. The pad 80 can be arranged in two rows and respectively located on both sides of the width direction of the support plate 10 and connected to the support plate 10 by screws. The connecting column 70 is installed on the side of the pad 80 away from the support plate 10 by screwing. In some embodiments, the connecting column 70 and the pad 80 can be installed by screwing, clamping or bonding, which can be set according to actual conditions. A connecting hole is opened on the side of the support plate 10 away from the pad 80, and the connecting hole and the pad 80 can be surrounded to form a connecting groove 60 with the surface of the pad 80 as the groove bottom.

[0081] It should be noted that the connecting column 70 is located on the side of the support plate 10 away from the embedded groove 11, which can prevent the height of the connecting column 70 from affecting the placement of the finished bottom battery cell and the clamping member 30, thereby improving the convenience of placing the finished bottom battery cell and the clamping member 30.

[0082] In some embodiments, while ensuring that the height of the connecting column 70 does not affect the placement and removal of the finished bottom battery cell and the clamping member 30, the connecting column 70 can be arranged on a side of the pallet 10 where the embedded groove 11 is arranged, and the connecting groove 60 is arranged on a side of the pallet 10 away from the connecting column 70. It can be arranged according to actual conditions and is not limited in this application.

[0083] When the finished bottom battery cells in the carrier device at the bottom are placed securely, multiple layers of carrier devices are placed layer by layer from bottom to top. The stacking of two adjacent carrier devices through connecting columns 70 and connecting grooves 60 facilitates batch coating growth process and improves coating efficiency.

[0084] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0085] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0086] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or 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 this application can be understood according to specific circumstances.

[0087] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0088] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A carrying device, characterized in that: The carrying device comprises: A support plate is provided with an embedded groove; A magnetic member is mounted on the support plate, and the magnetic member is disposed on opposite sides of the slot of the embedded slot; A clamping member is arranged corresponding to the magnetic member, the clamping member is magnetically connected to the corresponding magnetic member, and at least a portion of the clamping member extends into the embedded groove.

2. The carrying device according to claim 1, characterized in that: A limiting member is also provided on the support plate. The limiting member is provided on the outer side of the embedded groove, and the pressing member is connected to the limiting member.

3. The carrying device according to claim 2, characterized in that: The limiting member comprises: A plurality of limit posts are respectively mounted on the support plates and located outside the notches; The pressing member is provided with a plurality of limiting holes, and the limiting holes are sleeved on the limiting columns and are magnetically attracted to the magnetic member.

4. The carrying device according to claim 1, characterized in that: The magnetic component includes a plurality of magnets, and at least some of the magnets have different areas of magnetic attraction with the pressing component.

5. The carrying device according to claim 4, characterized in that: The support plate is provided with a magnet groove, and the magnet is installed in the magnet groove.

6. The carrying device according to claim 5, characterized in that: The magnet is detachably mounted in the magnet slot.

7. The carrying device according to claim 5, characterized in that: An operating opening is provided on the side wall of the embedded groove.

8. The carrying device according to claim 1, characterized in that: The support plate is provided with a plurality of the embedded grooves, and the plurality of the embedded grooves are arranged in a matrix; The plurality of magnetic members located on the same side of the embedded groove on the same straight line are magnetically connected to the same pressing member.

9. The carrying device according to claim 8, characterized in that: The pressing member is located between two adjacent embedded grooves along a preset direction, and two opposite sides of the pressing member extend into the two embedded grooves respectively.

10. A load-bearing assembly, characterized in that: include: A plurality of carrying devices according to any one of claims 1 to 9, wherein the plurality of carrying devices are arranged in an interleaved and stacked manner.

11. The load-bearing assembly according to claim 10, characterized in that: Two adjacent carrying devices are connected via a plurality of connecting columns.

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