Formation apparatus

Abstract

Provided in the embodiment of the present application is a formation apparatus. The formation apparatus comprises a tray and a negative-pressure device, wherein the tray comprises a tray body and at least one row of capsule assemblies, the capsule assemblies being arranged on the tray body, each row of capsule assemblies comprising a plurality of capsule assemblies arranged at intervals in a first direction, and a battery cell being placed between every two adjacent capsule assemblies; and the negative-pressure device comprises a support and negative-pressure cups, the support being connected to the tray body, the negative-pressure cups being arranged on the support, and the negative-pressure cups being configured to connect to battery cells. The capsule assemblies can deform and expand by means of being filled with a fluid, so as to abut against the battery cells and fix the battery cells, and the pressure exerted by the capsule assemblies on the battery cells is uniform, so that the possibility of damage to the battery cells can be reduced, thereby facilitating an improvement in the final product quality of the battery cells. By means of connecting the negative-pressure cups of the negative-pressure device to the battery cells, a negative pressure can be provided for the battery cells, so as to assist in the formation of the battery cells.

Description

Chemical formation equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application CN202410496788.3, ​​filed on April 24, 2024, entitled “Chemical Formation Equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery technology, and more specifically, to a formation device. Background Technology

[0004] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0005] In battery technology, improving the quality of battery manufacturing is a technical problem that urgently needs to be solved.

[0006] Summary of the Invention

[0007] This application provides a formation apparatus that can improve the preparation quality of battery cells.

[0008] In a first aspect, embodiments of this application provide a formation apparatus, which includes a tray and a negative pressure device. The tray includes a tray body and at least one row of capsule assemblies. The capsule assemblies are disposed on the tray body, and each row of capsule assemblies includes a plurality of capsule assemblies spaced apart along a first direction. A battery cell is placed between two adjacent capsule assemblies. The negative pressure device includes a support and a negative pressure cup. The support is connected to the tray body, and the negative pressure cup is disposed on the support and is used to connect to the battery cell.

[0009] In the above technical solution, by setting a capsule assembly on the tray and using the space between two adjacent capsules to place a battery cell, the capsule assembly can deform and expand by filling with fluid, contacting and fixing the battery cell. The pressure exerted by the capsule assembly on the battery cell is uniform, which can reduce the possibility of battery cell damage and improve the finished quality of the battery cell. By connecting the negative pressure cup of the negative pressure device to the battery cell, negative pressure can be provided to the battery cell to assist in the formation of the battery cell.

[0010] In some embodiments of this application, the capsule assembly includes a capsule and a frame, the frame being connected to the tray body, the capsule being disposed within the frame, and the edge of the capsule being connected to the frame.

[0011] In the above technical solution, by connecting the frame to the tray body, the position of the capsule assembly within the tray body can be fixed, thereby fixing the position of the battery cells between two adjacent capsule assemblies. By connecting the edge of the capsule to the frame, the position of the capsule assembly within the tray body can be fixed, and the distance between multiple battery cells can also be fixed. This facilitates the connection between the battery cells and the negative pressure device, reduces the possibility of misalignment between the negative pressure device and the battery cells, thereby reducing the risk of fluid leakage and improving the formation effect of the battery cells, thus improving the quality of the battery cells. It also facilitates the connection between the battery cells and the current probe of the formation device, reducing the possibility of misalignment between the battery cells and the current probe, and improving the formation efficiency of the battery cells. Since the positions of battery cells of different sizes are fixed within the tray body, it is not necessary to adjust the negative pressure device for forming battery cells of different sizes, thereby improving the preparation efficiency of the battery cells. By setting the capsule within the frame and connecting the edge of the capsule to the frame, the capsule can be fixed, and the middle part of the capsule can deform and abut against the battery cells to achieve the function of fixing the battery cells.

[0012] In some embodiments of this application, the frame includes a first subframe and a second subframe, the first subframe and the second subframe are arranged along a first direction and connected to each other, and the edge of the capsule is sandwiched between the first subframe and the second subframe.

[0013] In the above technical solution, by making the frame include a first sub-frame and a second sub-frame, and the edge of the capsule is sandwiched between the first sub-frame and the second sub-frame, it is possible to facilitate the assembly of the frame and the capsule.

[0014] In some embodiments of this application, the first subframe has a first opening, the second subframe has a second opening, the first opening and the second opening are disposed opposite to each other along a first direction, and the capsule is exposed through the first opening and the second opening.

[0015] In the above technical solution, by exposing the capsule to the first opening and the second opening, the capsule can extend out of the first opening and the second opening when it deforms, so as to abut against the battery cell and fix the battery cell.

[0016] In some embodiments of this application, a first annular groove is provided on the side of the first subframe facing the second subframe, and the inner periphery of the first annular groove forms a first opening; a second annular groove is provided on the side of the first subframe facing the second subframe, and the inner periphery of the second annular groove forms a second opening; the first annular groove and the second annular groove together form a receiving groove, and the edge of the bladder is received in the receiving groove.

[0017] In the above technical solution, by setting a first annular groove on the side of the first subframe facing the second subframe and setting a second annular groove on the side of the second subframe facing the first subframe, the first annular groove and the second annular groove together form a receiving groove, and the edge of the bladder is received in the receiving groove, the frame can fix the bladder better, the bladder is less likely to move relative to the frame, and the overall structure of the bladder assembly is more stable.

[0018] In some embodiments of this application, a first limiting protrusion is provided on the side of the first subframe facing the second subframe, a first limiting groove is provided on the side of the second subframe facing the first subframe, a limiting hole is provided on the edge of the bladder, and the first limiting protrusion passes through the limiting hole and is inserted into the first limiting groove.

[0019] In the above technical solution, by setting a first limiting protrusion on the side of the first subframe facing the second subframe, setting a first limiting groove on the side of the second subframe facing the first subframe, and setting a limiting hole on the edge of the capsule, the first limiting protrusion passes through the limiting hole and is inserted into the first limiting groove, so that the first subframe can limit the capsule and the second subframe on the vertical plane of the first direction, so that the first subframe is not easy to be displaced relative to the second subframe and the capsule is not easy to be displaced relative to the frame on the vertical plane of the first direction, and the overall structure of the capsule assembly is more stable.

[0020] In some embodiments of this application, a first support protrusion is provided on the side of the first subframe facing away from the second subframe, and a second support protrusion is provided on the side of the second subframe facing away from the first subframe. The first support protrusion and the second support protrusion are used to support the battery cell in the direction of gravity.

[0021] In the above technical solution, by providing a first support protrusion on the side of the first subframe facing away from the second subframe, and providing a second support protrusion on the side of the second subframe facing away from the first subframe, the first support protrusion and the second support protrusion can support the battery cell in the direction of gravity, thereby fixing the position of the battery cell in the direction of gravity and facilitating connection with the negative pressure device.

[0022] In some embodiments of this application, a second limiting protrusion and a third limiting protrusion are provided on the side of the first subframe facing away from the second subframe. Along the second direction, a first opening is located between the second limiting protrusion and the third limiting protrusion. The second limiting protrusion and the third limiting protrusion are used to limit the battery cell in the second direction. The first direction, the second direction and the gravity direction are perpendicular to each other.

[0023] In the above technical solution, by setting a second limiting protrusion and a third limiting protrusion on the side of the first subframe facing away from the second subframe, the second limiting protrusion and the third limiting protrusion can limit the battery cell in the second direction, thereby reducing the possibility of the battery cell being displaced relative to the capsule assembly in the second direction, and thus fixing the position of the battery cell in the tray, which is convenient for connection with the negative pressure device.

[0024] In some embodiments of this application, the outer periphery of the first sub-frame includes a first sidewall and a second sidewall opposite to each other along a second direction; along the second direction, a second limiting protrusion is recessed relative to the first sidewall of the first sub-frame; and along the second direction, a third limiting protrusion is recessed relative to the second sidewall of the first sub-frame.

[0025] In the above technical solution, by making the first limiting protrusion recessed relative to the first side wall of the first sub-frame along the second direction, and the second limiting protrusion recessed relative to the second side wall of the first sub-frame along the second direction, the bladder assembly is installed on the tray body, the first side wall of the first sub-frame abuts against the side plate of the tray body, and the first limiting protrusion and the side plate form a gap, the heat of the battery cell can be dissipated through the space between the first limiting protrusion and the side plate, which is beneficial to improving the heat dissipation effect of the battery cell.

[0026] In some embodiments of this application, the capsule includes a first component and a second component stacked along a first direction; the first component includes a first frame and a first membrane, the first membrane being disposed within and connected to the first frame; the second component includes a second frame and a second membrane, the second membrane being disposed within and connected to the second frame; the first frame is connected to the second frame, and a receiving cavity for containing fluid is formed between the first membrane and the second membrane.

[0027] In the above technical solution, by placing the first diaphragm inside and connected to the first frame, and placing the second diaphragm inside and connected to the second frame, the first frame and the second frame are connected, which can fix the first diaphragm and the second diaphragm. A receiving cavity for containing fluid is formed between the first diaphragm and the second diaphragm, so that after the fluid flows into the receiving cavity, the first diaphragm and the second diaphragm can deform and expand to abut against and fix the battery cell; after the fluid flows out of the receiving cavity, the first diaphragm and the second diaphragm can deform and contract to separate from the battery cell, making it easy to remove the battery cell.

[0028] In some embodiments of this application, the capsule further includes a first connector, which is annular and sandwiched between a first sidewall and a second sidewall.

[0029] In the above technical solution, by making the first connector ring-shaped and sandwiched between the first frame and the second frame, it can play a supporting role for the bladder. The first frame and the second frame are not easily deformed, making the structure of the bladder more stable.

[0030] In some embodiments of this application, the capsule further includes a valve for fluid to enter and exit the accommodating cavity, the valve being mounted on a first frame and / or a second frame.

[0031] In the above technical solution, by setting a valve, it is possible for fluid to flow into or out of the receiving cavity through the valve.

[0032] In some embodiments of this application, the tray further includes a first manifold having a plurality of first connection holes and at least one second connection hole, wherein the plurality of first connection holes are connected one-to-one with valves of a plurality of bladder assemblies, and the second connection hole is used to connect to a fluid source.

[0033] In the above technical solution, by setting a first manifold, the multiple first connection holes of the first manifold are connected one-to-one with the valves of multiple bladder assemblies. The second connection hole of the first manifold is used to connect with a fluid source, which can merge the fluid in multiple bladder assemblies, so as to simultaneously fill or extract fluid into multiple bladder assemblies to realize the expansion or contraction of the bladder assemblies.

[0034] In some embodiments of this application, the tray includes multiple rows of bladder assemblies arranged side by side along a second direction; the first direction, the second direction, and the gravity direction are perpendicular to each other.

[0035] In the above technical solution, by setting up multiple rows of capsule components arranged side by side along the second direction, the tray can accommodate more battery cells, which is beneficial to improving the preparation efficiency of battery cells.

[0036] In some embodiments of this application, the pallet body includes a bottom plate, two end plates, and a second connector. The two end plates are respectively disposed at both ends of the bottom plate along a first direction, and the two ends of the second connector are respectively connected to the two end plates.

[0037] In the above technical solution, by setting a base plate, two end plates and a second connector, the two end plates are respectively set at both ends of the base plate along the first direction, and the two ends of the second connector are respectively connected to the two end plates, which can make the force-bearing performance of the tray body higher, and the tray body is not easy to deform due to force, thus playing a protective role for the bladder assembly and battery cells.

[0038] In some embodiments of this application, the tray body further includes two side plates, which are respectively disposed on both sides of the bladder assembly along the second direction; along the second direction, each side plate is provided with at least one second connector on the side facing away from the bladder assembly; the first direction, the second direction and the gravity direction are perpendicular to each other.

[0039] In the above technical solution, by setting a side plate, the force-bearing performance of the tray body in the second direction can be further improved, so that the tray body can better protect the bladder assembly and the battery cells.

[0040] In some embodiments of this application, the bracket is detachably connected to the tray body.

[0041] In the above technical solution, by making the bracket and the tray body detachably connected, it is easy to disassemble the bracket and the tray body, and then insert or remove the battery cells into the tray body, and facilitate the maintenance of the bracket and the tray body.

[0042] In some embodiments of this application, one end of the negative pressure cup is connected to a suction nozzle, which is used to connect to a single battery cell.

[0043] In the above technical solution, by connecting a suction nozzle to one end of the negative pressure cup for connecting the battery cell, the connection between the negative pressure cup and the battery cell can be made more stable, and the battery cell can maintain communication with the negative pressure cup, which is beneficial to improving the formation effect of the battery cell.

[0044] In some embodiments of this application, the negative pressure device includes a second manifold and at least one row of negative pressure cups. Each row of negative pressure cups includes a plurality of negative pressure cups arranged along a first direction. The second manifold has a plurality of third connection holes and at least one fourth connection hole. The plurality of third connection holes are connected to the plurality of negative pressure cups in a one-to-one correspondence. The fourth connection hole is used to connect to a negative pressure source.

[0045] In the above technical solution, by setting a second busbar, the multiple third connection holes of the second busbar are connected one-to-one with the multiple negative pressure cups, and the fourth connection hole of the second busbar is used to connect with the negative pressure source, which can converge the airflow in the multiple negative pressure cups, so as to provide negative pressure to multiple battery cells at the same time through multiple negative pressure cups, so that the battery cells maintain a vacuum state during the formation process, which is beneficial to improving the formation effect of the battery cells.

[0046] In some embodiments of this application, the second manifold includes a body and a control valve, a third connection hole and a fourth connection hole are disposed on the body, and the control valve is disposed on the body for controlling the opening and closing of the third connection hole and / or the fourth connection hole.

[0047] In the above technical solution, by setting a control valve on the main body of the second busbar to control the opening and closing of the third connection hole and / or the fourth connection hole, the negative pressure cup can be connected to the battery cell, and the opening of the third connection hole and the fourth connection hole can be controlled by the control valve to provide negative pressure to the battery cell through the negative pressure cup; after the battery cell has been formed, the closing of the third connection hole and / or the fourth connection hole can be controlled by the control valve to stop providing negative pressure to the negative pressure cup.

[0048] In some embodiments of this application, the bracket includes at least two first support plates, which are respectively connected to both ends of the second busbar along a first direction, and are respectively detachably connected to two end plates.

[0049] In the above technical solution, by setting at least two first support plates, the at least two first support plates are respectively connected to the two ends of the second manifold along the first direction, and the at least two first support plates are respectively detachably connected to the two end plates, so that the second manifold is located between the two end plates, which facilitates connection with the negative pressure cup.

[0050] In some embodiments of this application, the first support plate and the end plate are connected by a connecting mechanism; the connecting mechanism includes a first fastener, a second fastener, and an elastic element. The first fastener and the second fastener are rotatably connected to the end plate, the first end of the first fastener is provided with a first fastening portion, the first end of the second fastener is provided with a second fastening portion, the second ends of the first fastener and the second ends of the second fastener are connected by the elastic element, the first support plate is provided with a first fastening groove and a second fastening groove, the first fastening groove engages with the first fastening portion, and the second fastening groove engages with the second fastening portion.

[0051] In the above technical solution, the connecting mechanism includes a first fastener, a second fastener, and an elastic element. The first fastener can engage with the first fastening groove of the first support plate, and the second fastener can engage with the second fastening groove of the first support plate, thereby connecting the tray to the first support plate. The first and second fasteners are rotatably connected to the end plate, allowing them to rotate relative to the end plate to engage or disengage with the first and second fastening grooves, respectively, thus achieving a detachable connection between the first support plate and the end plate. The second ends of the first and second fasteners are connected by an elastic element, which provides elastic force to both fasteners to keep the first fastener engaged with the first fastening groove and the second fastener engaged with the second fastening groove, making the connecting mechanism more stable.

[0052] In some embodiments of this application, the bracket includes a second support plate, the two ends of which are respectively connected to at least two first support plates, a negative pressure cup is disposed on the second support plate, and the second support plate is located between the second manifold and the tray along the direction of gravity.

[0053] In the above technical solution, by setting a second support plate, both ends of the second support plate are respectively connected to at least two first support plates. The negative pressure cup is set on the second support plate. Along the direction of gravity, the second support plate is located between the second busbar and the tray, which facilitates the connection of the end of the negative pressure cup facing the tray to the battery cell, and the end of the negative pressure cup facing away from the tray to the second busbar. Attached Figure Description

[0054] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 is a three-dimensional structural schematic diagram of the chemical formation equipment provided in some embodiments of this application;

[0056] Figure 2 is a perspective view of a portion of the structure of the capsule assembly of a chemical formation device provided in some embodiments of this application;

[0057] Figure 3 is a three-dimensional structural diagram of the frame of the formation device provided in some embodiments of this application;

[0058] Figure 4 is a three-dimensional structural schematic diagram of the first sub-frame of the formation device provided in some embodiments of this application;

[0059] Figure 5 is a three-dimensional structural schematic diagram of the second sub-frame of the formation device provided in some embodiments of this application;

[0060] Figure 6 is a three-dimensional structural schematic diagram of the frame of the formation device provided in some other embodiments of this application;

[0061] Figure 7 is a three-dimensional structural schematic diagram of the capsule of the chemical formation device provided in some embodiments of this application;

[0062] Figure 8 is a perspective view of a portion of the structure of the capsule of a chemical formation device provided in some embodiments of this application;

[0063] Figure 9 is a perspective view of a portion of the structure of the capsule of a chemical formation device provided in some embodiments of this application;

[0064] Figure 10 is a three-dimensional structural schematic diagram of the capsule of the chemical formation device provided in some other embodiments of this application;

[0065] Figure 11 is a three-dimensional structural schematic diagram of the tray body assembly provided in some other embodiments of this application;

[0066] Figure 12 is a three-dimensional structural schematic diagram of the tray of the chemical formation equipment provided in some other embodiments of this application;

[0067] Figure 13 is a three-dimensional structural diagram of the tray of the chemical formation equipment provided in some embodiments of this application;

[0068] Figure 14 is a three-dimensional structural schematic diagram of the negative pressure device of the chemical formation equipment provided in some embodiments of this application;

[0069] Figure 15 is a partially enlarged structural diagram of point A in the chemical formation equipment in Figure 1.

[0070] The accompanying drawings are not drawn to scale.

[0071] Marking Explanation: 10-Tray; 100-Tray Body; 110-Bottom Plate; 120-End Plate; 130-Second Connector; 140-Side Plate; 141-Fifth Groove; 142-Second Limiting Groove; 200-Blouse Assembly; 210-Blouse; 211-First Limiting Hole; 212-First Component; 2121-First Frame; 2122-First Diaphragm; 213-Second Component; 2131-Second Frame; 2132 - Second diaphragm; 214 - First connector; 2141 - Second through hole; 2142 - Second limiting hole; 215 - Valve; 220 - Frame; 221 - First sub-frame; 221b - First sidewall; 221c - Second sidewall; 2211 - First opening; 2212 - First annular groove; 2213 - First limiting protrusion; 2214 - First support protrusion; 2215 - Second limiting protrusion; 221 6-Third limiting protrusion; 222-Second sub-frame; 222b-Third sidewall; 222c-Fourth sidewall; 2221-Second opening; 2222-Second annular groove; 2223-First limiting groove; 2224-Second support protrusion; 2225-Fourth limiting protrusion; 2226-Fifth limiting protrusion; 300-Bracket; 310-First support plate; 311-First buckle groove; 312-Second buckle groove ; 320-Second support plate; 400-Negative pressure cup; 410-Suction nozzle; 500-Second manifold; 510-Main body; 511-Fourth connecting hole; 520-Control valve; 600-Connecting mechanism; 610-First buckle; 611-First buckle part; 620-Second buckle; 621-Second buckle part; 630-Elastic element; 2-Battery cell; X-First direction; Y-Second direction; z-Gravity direction. Detailed Implementation

[0072] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0073] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0074] The terms "first," "second," etc., in the specification, claims, or the accompanying drawings of this application are used to distinguish different objects, rather than to describe a specific order or primary / secondary relationship.

[0075] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0076] In this application, "multiple" means two or more (including two).

[0077] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited thereto. The battery cell may be flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0078] A single battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, while the current collector without the coating acts as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, while the current collector without the coating acts as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that large currents can pass through without melting, multiple positive electrode tabs and multiple negative electrode tabs are stacked together. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc.

[0079] Batteries have outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide applicability, and low self-discharge coefficient, making them an important component of the current development of new energy.

[0080] The preparation of battery cells generally requires formation. During the formation process, the position of the battery cells needs to be fixed so that they can be connected to the negative pressure device and the formation device. However, the trays currently used for fixing generally include a tray body and multiple fixing plates arranged in the first direction. The battery cells are placed between two adjacent fixing plates. The fixing plates exert a large force on the battery cells, and the manufacturing process of the fixing plates may cause uneven force on the battery cells, which can easily cause the battery cells to be damaged due to excessive force, thus affecting the quality of the finished battery cells.

[0081] Based on the above considerations, this application provides a formation device, which includes a tray and a negative pressure device. The tray includes a tray body and at least one row of capsule assemblies. The capsule assemblies are disposed on the tray body. Each row of capsule assemblies includes a plurality of capsule assemblies arranged at intervals along a first direction. A battery cell is placed between two adjacent capsule assemblies. The negative pressure device includes a support and a negative pressure cup. The support is connected to the tray body, and the negative pressure cup is disposed on the support. The negative pressure cup is used to connect with the battery cell.

[0082] In this application's technical solution, by setting a capsule assembly on a tray and using the space between two adjacent capsules to place a battery cell, the capsule assembly can deform and expand by filling with fluid, contacting and fixing the battery cell. The pressure exerted by the capsule assembly on the battery cell is uniform, which reduces the possibility of battery cell damage and improves the finished quality of the battery cell. By connecting the negative pressure cup of the negative pressure device to the battery cell, negative pressure can be provided to the battery cell to assist in its formation.

[0083] The battery cells disclosed in this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be constructed using batteries disclosed in this application.

[0084] Electrical appliances can include, but are not limited to, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0085] Referring to Figure 1, Figure 1 is a three-dimensional structural schematic diagram of the formation device provided in some embodiments of this application.

[0086] This application provides a formation apparatus 1, which includes a tray 10 and a negative pressure device 20. The tray 10 includes a tray body 100 and at least one row of capsule assemblies 200. The capsule assemblies 200 are disposed on the tray body 100. Each row of capsule assemblies 200 includes a plurality of capsule assemblies 200 arranged at intervals along a first direction X. A battery cell 2 is placed between two adjacent capsule assemblies 200. The negative pressure device 20 includes a support 300 and a negative pressure cup 400. The support 300 is connected to the tray body 100, and the negative pressure cup 400 is disposed on the support 300 and is used to connect to the battery cell 2.

[0087] By providing a capsule assembly 200 on the tray 10, and using the space between two adjacent capsules 210 for placing the battery cell 2, the capsule assembly 200 can deform and expand by filling with fluid, abutting against and fixing the battery cell 2. The pressure exerted by the capsule assembly 200 on the battery cell 2 is uniform, which reduces the possibility of damage to the battery cell 2 and helps improve the finished quality of the battery cell 2. By connecting the negative pressure cup 400 of the negative pressure device 20 to the battery cell 2, negative pressure can be provided to the battery cell 2 to assist in the formation of the battery cell 2.

[0088] In some embodiments, the battery cell 2 can be in the form of a cuboid, so that multiple battery cells 2 can be arranged in a matrix and are close together, which is beneficial to improving the efficiency of the tray 10.

[0089] In other embodiments, the battery cell 2 may also be flat, cylindrical or other shapes.

[0090] Referring to Figure 2, Figure 2 is a perspective view of a portion of the structure of the capsule assembly of a formation device provided in some embodiments of this application.

[0091] In some embodiments, the capsule assembly 200 includes a capsule 210 and a frame 220, the frame 220 being connected to the tray body 100, the capsule 210 being disposed within the frame 220, and the edge of the capsule 210 being connected to the frame 220.

[0092] Currently, in trays that fix battery cells using a fixing plate, the fixing plate can move along a first direction from the first end to the second end within the tray body to press against the battery cells, thereby fixing their position. However, this results in excessive pressure on the battery cells located at the second end, which can easily cause damage. Therefore, in this application, by connecting the frame 220 to the tray body 100, the position of the capsule assembly 200 within the tray body 100 can be fixed, thereby fixing the position of the battery cells 2 between two adjacent capsule assemblies 200. By connecting the edge of the capsule 210 to the frame 220, the position of the capsule assembly 200 within the tray body 100 can be fixed, and the distance between multiple battery cells 2 can also be fixed. This facilitates the connection between the battery cells 2 and the negative pressure device, reduces the possibility of misalignment between the negative pressure device and the battery cells 2, thereby reducing the risk of fluid leakage and improving the formation effect of the battery cells 2, thus improving the overall performance of the battery cells. The quality of 2 is improved; it facilitates the connection between the battery cell 2 and the current probe of the formation device, reduces the possibility of misalignment between the battery cell 2 and the current probe, and helps to improve the formation efficiency of the battery cell 2; battery cells 2 of different sizes are fixed in the position of the tray body 100, so there is no need to adjust the negative pressure device for forming battery cells 2 of different sizes, which can improve the preparation efficiency of the battery cell 2; by setting the capsule 210 in the frame 220, and the edge of the capsule 210 is connected to the frame 220, the capsule 210 can be fixed, and the middle part of the capsule 210 can deform and abut against the battery cell 2 to achieve the function of fixing the battery cell 2.

[0093] Referring to Figures 3 to 5, Figure 3 is a three-dimensional structural schematic diagram of the frame of the formation device provided in some embodiments of this application; Figure 4 is a three-dimensional structural schematic diagram of the first sub-frame of the formation device provided in some embodiments of this application; and Figure 5 is a three-dimensional structural schematic diagram of the second sub-frame of the formation device provided in some embodiments of this application.

[0094] In some embodiments, the frame 220 includes a first sub-frame 221 and a second sub-frame 222, the first sub-frame 221 and the second sub-frame 222 are arranged along a first direction X and connected to each other, and the edge of the bladder 210 is sandwiched between the first sub-frame 221 and the second sub-frame 222.

[0095] By making the frame 220 include a first sub-frame 221 and a second sub-frame 222, and the edge of the capsule 210 is sandwiched between the first sub-frame 221 and the second sub-frame 222, it is possible to facilitate the assembly of the frame 220 and the capsule 210.

[0096] In other embodiments, the first subframe 221 and the second subframe 222 may also be integrally formed.

[0097] In some embodiments, the frame 220 may be made of at least one of engineering plastics, metal parts, and carbon fiber, which can make the frame 220 have greater structural strength and better stress performance.

[0098] In some embodiments, the first subframe 221 has a first opening 2211, the second subframe 222 has a second opening 2221, the first opening 2211 and the second opening 2221 are arranged opposite to each other along a first direction X, and the capsule 210 is exposed to the first opening 2211 and the second opening 2221.

[0099] By exposing the capsule 210 to the first opening 2211 and the second opening 2221, the capsule 210 can extend out of the first opening 2211 and the second opening 2221 when it deforms, so as to abut against the battery cell 2 and thus fix the battery cell 2.

[0100] In some embodiments, the length of the first opening 2211 along the gravity direction z is less than or equal to the length of the battery cell 2 along the gravity direction z, and the width of the first opening 2211 along the second direction Y is less than or equal to the width of the battery cell 2 along the second direction Y, so that the portion of the capsule 210 exposed in the first opening 2211 can abut against the middle of the battery cell 2, reducing the possibility of the capsule 210 squeezing the tab of the battery cell 2 and causing damage to the tab or short circuit of the battery cell 2, thereby reducing the possibility of thermal runaway of the battery cell 2.

[0101] In some embodiments, the length of the second opening 2221 along the gravity direction z is less than or equal to the length of the battery cell 2 along the gravity direction z, and the width of the second opening 2221 along the second direction Y is less than or equal to the width of the battery cell 2 along the second direction Y, so that the portion of the capsule 210 exposed in the second opening 2221 can abut against the middle of the battery cell 2, reducing the possibility of the capsule 210 squeezing the tab of the battery cell 2 and causing damage to the tab or short circuit of the battery cell 2, thereby reducing the possibility of thermal runaway of the battery cell 2.

[0102] In some embodiments, a first annular groove 2212 is provided on the side of the first sub-frame 221 facing the second sub-frame 222, and the inner periphery of the first annular groove 2212 forms a first opening 2211. A second annular groove 2222 is provided on the side of the first sub-frame 221 facing the second sub-frame 222, and the inner periphery of the second annular groove 2222 forms a second opening 2221. The first annular groove 2212 and the second annular groove 2222 together form a receiving groove, and the edge of the bladder 210 is received within the receiving groove.

[0103] By providing a first annular groove 2212 on the side of the first sub-frame 221 facing the second sub-frame 222, and providing a second annular groove 2222 on the side of the second sub-frame 222 facing the first sub-frame 221, the first annular groove 2212 and the second annular groove 2222 together form a receiving groove, and the edge of the bladder 210 is received in the receiving groove, the frame 220 can fix the bladder 210 better, the bladder 210 is less likely to be displaced relative to the frame 220, and the overall structure of the bladder assembly 200 is more stable.

[0104] In some embodiments, the first subframe 221 is provided with a first limiting protrusion 2213 on the side facing the second subframe 222, the second subframe 222 is provided with a first limiting groove 2223 on the side facing the first subframe 221, and the edge of the bladder 210 is provided with a limiting hole 211. The first limiting protrusion 2213 passes through the limiting hole 211 and is inserted into the first limiting groove 2223.

[0105] By providing a first limiting protrusion 2213 on the side of the first sub-frame 221 facing the second sub-frame 222, and a first limiting groove 2223 on the side of the second sub-frame 222 facing the first sub-frame 221, and a limiting hole 211 on the edge of the bladder 210, the first limiting protrusion 2213 passes through the limiting hole 211 and is inserted into the first limiting groove 2223, so that the first sub-frame 221 can limit the bladder 210 and the second sub-frame 222 on the vertical plane of the first direction X, so that the first sub-frame 221 is less likely to be displaced relative to the second sub-frame 222 and the bladder 210 is less likely to be displaced relative to the frame 220 on the vertical plane of the first direction X, and the overall structure of the bladder assembly 200 is more stable.

[0106] In other embodiments, a second limiting groove may be provided on the side of the first subframe 221 facing the second subframe 222, and a first limiting protrusion may be provided on the side of the second subframe 222 facing the first subframe 221. The first limiting protrusion passes through the limiting hole 211 and is inserted into the first limiting groove.

[0107] In other embodiments, the capsule 210 can also be fixed in the receiving groove by means of interference fit, elastic abutment, snap connection, etc. For example, the capsule 210 is provided with a first elastic member (not shown in the figure) on at least one side along the gravity direction z, and a second elastic member (not shown in the figure) is provided on at least one side along the second direction Y. The first elastic member and the second elastic member abut against the inner wall of the receiving groove to fix the capsule 210 in the receiving groove.

[0108] In some embodiments, a first support protrusion 2214 is provided on the side of the first subframe 221 facing away from the second subframe 222, and a second support protrusion 2224 is provided on the side of the second subframe 222 facing away from the first subframe 221. The first support protrusion 2214 and the second support protrusion 2224 are used to support the battery cell 2 in the direction of gravity z.

[0109] By providing a first support protrusion 2214 on the side of the first subframe 221 facing away from the second subframe 222, and providing a second support protrusion 2224 on the side of the second subframe 222 facing away from the first subframe 221, the first support protrusion 2214 and the second support protrusion 2224 can support the battery cell 2 in the direction of gravity z, thereby fixing the position of the battery cell 2 in the direction of gravity z, which is convenient for connection with the negative pressure device.

[0110] In other embodiments, the battery cell 2 may also be directly supported on the tray body 100.

[0111] In some embodiments, the outer periphery of the first sub-frame 221 includes a first sidewall 221b and a second sidewall 221c opposite each other along the second direction Y. Along the second direction Y, a first support protrusion 2214 is recessed relative to the first sidewall 221b of the first sub-frame 221. Along the second direction Y, the first support protrusion 2214 is recessed relative to the second sidewall 221c of the first sub-frame 221.

[0112] By making the first support protrusion 2214 recessed relative to the first sidewall 221b of the first subframe 221 along the second direction Y, and the first support protrusion 2214 recessed relative to the second sidewall 221c of the first subframe 221 along the second direction Y, the bladder assembly 200 is mounted on the tray body 100, the first sidewall 221b of the first subframe abuts against the side plate of the tray body 100, and the first support protrusion 2214 forms a gap with the side plate. The heat of the battery cell 2 can be dissipated through the space between the first support protrusion 2214 and the side plate, which is beneficial to improving the heat dissipation effect of the battery cell 2.

[0113] In some embodiments, the outer periphery of the second subframe 222 includes a third sidewall 222b and a fourth sidewall 222c opposite to each other along the second direction Y. Along the second direction Y, a second support protrusion 2224 is recessed relative to the third sidewall 222b of the second subframe 222. Along the second direction Y, the second support protrusion 2224 is recessed relative to the fourth sidewall 222c of the second subframe 222.

[0114] By making the second support protrusion 2224 recessed relative to the third sidewall 222b of the second subframe 222 along the second direction Y, and the second support protrusion 2224 recessed relative to the fourth sidewall 222c of the second subframe 222, the bladder assembly 200 is mounted on the tray body 100, the third sidewall 222b of the second subframe 222 abuts against the side plate of the tray body 100, and the second support protrusion 2224 forms a gap with the side plate. The heat of the battery cell 2 can be dissipated through the space between the second support protrusion 2224 and the side plate, which is beneficial to improving the heat dissipation effect of the battery cell 2.

[0115] In some embodiments, a second limiting protrusion 2215 and a third limiting protrusion (not shown in the figure) are provided on the side of the first subframe 221 facing away from the second subframe 222. Along the second direction Y, the first opening 2211 is located between the second limiting protrusion 2215 and the third limiting protrusion. The second limiting protrusion 2215 and the third limiting protrusion are used to limit the battery cell 2 in the second direction Y. The first direction X, the second direction Y and the gravity direction z are perpendicular to each other.

[0116] By providing a second limiting protrusion 2215 and a third limiting protrusion on the side of the first subframe 221 facing away from the second subframe 222, the second limiting protrusion 2215 and the third limiting protrusion can limit the battery cell 2 in the second direction Y, thereby reducing the possibility of the battery cell 2 being displaced relative to the capsule assembly 200 in the second direction Y, and thus fixing the position of the battery cell 2 in the tray 10, which is convenient for connection with the negative pressure device.

[0117] In some embodiments, the outer periphery of the first sub-frame 221 includes a first sidewall 221b and a second sidewall 221c opposite each other along the second direction Y. Along the second direction Y, a second limiting protrusion 2215 is recessed relative to the first sidewall 221b of the first sub-frame 221. Along the second direction Y, a third limiting protrusion is recessed relative to the second sidewall 221c of the first sub-frame 221.

[0118] By making the second limiting protrusion 2215 recessed relative to the first sidewall 221b of the first subframe 221 along the second direction Y, and the third limiting protrusion recessed relative to the second sidewall 221c of the first subframe 221 along the second direction Y, the bladder assembly 200 is mounted on the tray body 100, the first sidewall 221b of the first subframe 221 abuts against the side plate of the tray body 100, and the second limiting protrusion 2215 forms a gap with the side plate. The heat of the battery cell 2 can be dissipated through the space between the second limiting protrusion 2215 and the side plate, which is beneficial to improving the heat dissipation effect of the battery cell 2.

[0119] In some embodiments, the second subframe 222 is provided with a fourth limiting protrusion 2225 and a fifth limiting protrusion 2226 on the side of the second subframe 222 away from the first subframe 221. Along the second direction Y, the second opening 2221 is located between the fourth limiting protrusion 2225 and the fifth limiting protrusion 2226. The fourth limiting protrusion 2225 and the fifth limiting protrusion 2226 are used to limit the battery cell 2 in the second direction Y. The first direction X, the second direction Y and the gravity direction z are perpendicular to each other.

[0120] By providing a fourth limiting protrusion 2225 and a fifth limiting protrusion 2226 on the side of the second subframe 222 facing away from the first subframe 221, the fourth limiting protrusion 2225 and the fifth limiting protrusion 2226 can limit the battery cell 2 in the second direction Y, thereby reducing the possibility of the battery cell 2 being displaced relative to the capsule assembly 200 in the second direction Y, and thus fixing the position of the battery cell 2 in the tray 10, which is convenient for connection with the negative pressure device.

[0121] In some embodiments, the outer periphery of the second subframe 222 includes third sidewalls 222b and 222c opposite each other along the second direction Y. A fourth limiting protrusion 2225 is recessed relative to the third sidewall 222b of the second subframe 222 along the second direction Y. A fifth limiting protrusion 2226 is recessed relative to the fourth sidewall 222c of the second subframe 222 along the second direction Y.

[0122] By making the fourth limiting protrusion 2225 recessed relative to the third sidewall 222b of the second subframe 222 along the second direction Y, and the fifth limiting protrusion 2226 recessed relative to the fourth sidewall 222c of the second subframe 222 along the second direction Y, the bladder assembly 200 is mounted on the tray body 100, the third sidewall 222b of the second subframe 222 abuts against the side plate of the tray body 100, and the fourth limiting protrusion 2225 forms a gap with the side plate. The heat of the battery cell 2 can be dissipated through the space between the fourth limiting protrusion 2225 and the side plate, which is beneficial to improving the heat dissipation effect of the battery cell 2.

[0123] Referring to Figure 6, which is a three-dimensional structural schematic diagram of the frame of the formation device provided in some other embodiments of this application.

[0124] In other embodiments, a support protrusion and a limiting protrusion may also be provided for one of the first sub-frame 221 and the second sub-frame 222. For example, as shown in FIG6, the first sub-frame 221 is provided with a first support protrusion 2214, a second limiting protrusion 2215, and a third limiting protrusion 2216, while the second sub-frame 222 is not provided with a support protrusion and a limiting protrusion. This frame 220 is used to be placed at the end of each row of bag assembly 200, and the side without the support protrusion and the limiting protrusion is used to abut against the end plate 120 of the tray body 100, which helps to improve the space utilization of the tray.

[0125] Referring to Figures 7 and 8, Figure 7 is a three-dimensional structural schematic diagram of the capsule of the formation device provided in some embodiments of this application; Figure 8 is a three-dimensional schematic diagram of a portion of the structure of the capsule of the formation device provided in some embodiments of this application.

[0126] In some embodiments, the capsule 210 includes a first component 212 and a second component 213 stacked along a first direction X. The first component 212 includes a first frame 2121 and a first diaphragm 2122, the first diaphragm 2122 being disposed within and connected to the first frame 2121; the second component 213 includes a second frame 2131 and a second diaphragm 2132, the second diaphragm 2132 being disposed within and connected to the second frame 2131. The first frame 2121 is connected to the second frame 2131, and a receiving cavity for receiving fluid is formed between the first diaphragm 2122 and the second diaphragm 2132.

[0127] By placing the first diaphragm 2122 within and connecting to the first frame 2121, and placing the second diaphragm 2132 within and connecting to the second frame 2131, the first frame 2121 and the second frame 2131 are connected, thus fixing the first diaphragm 2122 and the second diaphragm 2132. A receiving cavity for accommodating fluid is formed between the first diaphragm 2122 and the second diaphragm 2132. After the fluid flows into the receiving cavity, the first diaphragm 2122 and the second diaphragm 2132 can deform and expand to abut against and fix the battery cell 2. After the fluid flows out of the receiving cavity, the first diaphragm 2122 and the second diaphragm 2132 can deform and contract to separate from the battery cell 2, facilitating the removal of the battery cell 2.

[0128] In some embodiments, the first frame 2121 and the first diaphragm 2122 may be integrally formed. For example, the first frame 2121 is formed by vulcanizing the edges of a rubber diaphragm.

[0129] In other embodiments, the materials of the first frame 2121 and the first diaphragm 2122 may be different, and they can be fixedly connected by means of bonding, fastening, etc.

[0130] In some embodiments, the second frame 2131 and the second diaphragm 2132 may be integrally formed. For example, the second frame 2131 is formed by vulcanizing the edges of a rubber diaphragm.

[0131] In other embodiments, the materials of the second frame 2131 and the second diaphragm 2132 may also be different, and they can be fixedly connected by means of bonding, fastening, etc.

[0132] In some embodiments, along the first direction X, the thickness of the first frame 2121 is greater than the thickness of the first diaphragm 2122, and the thickness of the second frame 2131 is greater than the thickness of the second diaphragm 2132.

[0133] By making the thickness of the first frame 2121 greater than the thickness of the first membrane 2122 and the thickness of the second frame 2131 greater than the thickness of the second membrane 2132 along the first direction X, the first frame 2121 and the second frame 2131 can be made more rigid and less prone to deformation, and the position of the capsule 210 can be more stable.

[0134] In some embodiments, the length of the first diaphragm 2122 along the gravitational direction z is greater than or equal to the length of the first opening 2211 along the gravitational direction z, and the width of the first diaphragm 2122 along the second direction Y is greater than or equal to the width of the first opening 2211 along the second direction Y, so that the first diaphragm 2122 can fill the first opening 2211 after deformation and expansion, which can make the contact area between the first diaphragm 2122 and the battery cell 2 larger, the force on the battery cell 2 per unit area smaller, and reduce the possibility of damage to the battery cell 2.

[0135] In some embodiments, the length of the second diaphragm 2132 along the gravitational direction z is greater than or equal to the length of the second opening 2221 along the gravitational direction z, and the width of the second diaphragm 2132 along the second direction Y is greater than or equal to the width of the second opening 2221 along the second direction Y, so that the second diaphragm 2132 can fill the second opening 2221 after deformation and expansion, which can make the contact area between the first diaphragm 2122 and the battery cell 2 larger, the force on the battery cell 2 per unit area smaller, and reduce the possibility of damage to the battery cell 2.

[0136] Please also refer to Figure 9, which is a three-dimensional schematic diagram of a portion of the structure of the capsule of a formation device provided in some embodiments of this application.

[0137] In some embodiments, the capsule 210 further includes a first connector 214, which is annular and sandwiched between a first frame 2121 and a second frame 2131.

[0138] By making the first connector 214 ring-shaped and sandwiched between the first frame 2121 and the second frame 2131, it can support the bladder 210. The first frame 2121 and the second frame 2131 are not easily deformed, making the structure of the bladder 210 more stable.

[0139] In some embodiments, the first connector 214 can be made of metal, which can make the first connector 214 have higher support strength and better support effect on the first frame 2121 and the second frame 2131, making the first frame 2121 and the second frame 2131 less prone to deformation, thereby making the position of the bladder 210 within the frame 220 more stable.

[0140] In other embodiments, the first connector 214 may also be made of materials such as plastic or carbon fiber.

[0141] In some embodiments, the bladder 210 further includes a valve 215 for allowing fluid to enter and exit the accommodating cavity, the valve 215 being mounted on the first frame 2121 and / or the second frame 2131.

[0142] By setting valve 215, fluid can easily flow into or out of the receiving cavity through valve 215.

[0143] Referring to Figure 10, which is a three-dimensional structural schematic diagram of the capsule of the formation device provided in some other embodiments of this application.

[0144] In some other embodiments, a third groove 2121a is provided on the side of the first frame 2121 facing the second frame 2131. The third groove 2121a penetrates the first frame 2121 along the second direction Y, and one end of the valve 215 is inserted into the third groove 2121a.

[0145] In other embodiments, valve 215 may also be inserted into the second frame 2131.

[0146] Referring to Figure 2, in some embodiments, valve 215 is disposed through frame 220 along the second direction Y.

[0147] Referring to Figure 11, Figure 11 is a three-dimensional structural schematic diagram of the capsule assembly of the formation device provided in some other embodiments of this application.

[0148] In other embodiments, the valve 215 is disposed through the frame 220 along the gravity direction z. When the number of rows of the capsule assembly 200 is greater than two, the capsule assembly 200 located in the middle along the second direction Y occupies less space in the second direction Y, which is beneficial to improving the space utilization of the tray 10.

[0149] In some embodiments, the tray 10 further includes a first manifold (not shown in the figure), the first manifold having a plurality of first connection holes and at least one second connection hole, the plurality of first connection holes being connected one-to-one with the valves 215 of the plurality of bladder assemblies 200, and the second connection hole being used to connect to a fluid source.

[0150] By setting a first manifold, the multiple first connection holes of the first manifold are connected one-to-one with the valves 215 of the multiple bladder assemblies 200. The second connection hole of the manifold is used to connect to a fluid source, which can merge the fluid in the multiple bladder assemblies 200, so as to simultaneously fill or extract fluid into the multiple bladder assemblies 200 to realize the expansion or contraction of the bladder assemblies 200.

[0151] The first manifold enables the fluid supplied by the fluid source to be evenly distributed to multiple capsule assemblies 200.

[0152] In other embodiments, the valve 215 of each capsule assembly 200 is directly connected to a fluid source.

[0153] Referring to Figure 12, which is a three-dimensional structural schematic diagram of the tray of the formation device provided in some other embodiments of this application.

[0154] In some embodiments, the tray 10 includes multiple rows of bladder assemblies 200 arranged side-by-side along a second direction Y. The first direction X, the second direction Y, and the gravity direction z are perpendicular to each other.

[0155] By setting up multiple rows of capsule components 200 arranged side by side along the second direction Y, the tray 10 can accommodate more battery cells 2, which is beneficial to improving the preparation efficiency of battery cells 2.

[0156] For example, as shown in Figure 1, the tray 10 includes two rows of pouch assemblies 200. For example, as shown in Figure 12, the tray 10 may also include three rows of pouch assemblies 200, which are arranged along a second direction Y. In other embodiments, the tray 10 may also include four rows of pouch assemblies 200, five rows of pouch assemblies 200, etc.

[0157] Referring to Figure 13, Figure 13 is a three-dimensional structural schematic diagram of the tray of the formation device provided in some embodiments of this application.

[0158] In some embodiments, the pallet body 100 includes a bottom plate 110, two end plates 120 and a second connector 130. The two end plates 120 are respectively disposed at both ends of the bottom plate 110 along the first direction X, and the two ends of the second connector 130 are respectively connected to the two end plates 120.

[0159] By setting a base plate 110, two end plates 120 and a second connector 130, with the two end plates 120 respectively located at both ends of the base plate 110 along the first direction X, and the two ends of the second connector 130 respectively connected to the two end plates 120, the tray body 100 can have high stress performance and is not easily deformed due to stress, thus playing a protective role for the bladder assembly 200 and the battery cell 2.

[0160] In some embodiments, the tray body 100 further includes two side plates 140, which are respectively disposed on both sides of the capsule assembly 200 along the second direction Y. The tray body 100 includes at least two second connectors 130, and each side plate 140 has at least one second connector 130 disposed on the side facing away from the capsule assembly 200 along the second direction Y. The first direction X, the second direction Y, and the gravity direction z are perpendicular to each other.

[0161] By setting the side plate 140, the force-bearing performance of the tray body 100 in the second direction Y can be further improved, so that the tray body 100 can better protect the bladder assembly 200 and the battery cell 2.

[0162] In some embodiments, the second connector 130 may be a connecting rod.

[0163] Referring to Figure 14, Figure 14 is a three-dimensional structural schematic diagram of the negative pressure device of the formation equipment provided in some embodiments of this application.

[0164] In some embodiments, the support 300 is detachably connected to the tray body 100.

[0165] By making the bracket 300 detachably connected to the tray body 100, it is easy to install the battery cell 2 into or remove the battery cell 2 from the tray body 100 after the bracket 300 is detached from the tray body 100, and it is also convenient to maintain the bracket 300 and the tray body 100.

[0166] In some embodiments, one end of the negative pressure cup 400 is connected to a suction nozzle 410, which is used to connect to the battery cell 2.

[0167] By connecting a nozzle 410 to one end of the negative pressure cup 400 for connecting the battery cell 2, the connection between the negative pressure cup 400 and the battery cell 2 can be made more stable, and the battery cell 2 can remain connected to the negative pressure cup 400, which is beneficial to improving the formation effect of the battery cell 2.

[0168] In some embodiments, the negative pressure device 20 includes a second manifold 500 and at least one row of negative pressure cups 400. Each row of negative pressure cups 400 includes a plurality of negative pressure cups 400 arranged along a first direction X. The second manifold 500 has a plurality of third connection holes (not shown in the figure) and at least one fourth connection hole 511. The plurality of third connection holes are connected one-to-one with the plurality of negative pressure cups 400, and the fourth connection hole 511 is used to connect to a negative pressure source (not shown in the figure).

[0169] By setting a second manifold 500, the multiple third connection holes of the second manifold 500 are connected one-to-one with the multiple negative pressure cups 400. The fourth connection hole 511 of the second manifold 500 is used to connect with a negative pressure source, which can merge the airflow in the multiple negative pressure cups 400, so that negative pressure can be provided to multiple battery cells 2 at the same time through multiple negative pressure cups 400, so that the battery cells 2 maintain a vacuum state during the formation process, which is beneficial to improving the formation effect of the battery cells 2.

[0170] In some embodiments, the second manifold 500 includes a body 510 and a control valve 520, a third connection hole and a fourth connection hole 511 are disposed on the body 510, and the control valve 520 is disposed on the body 510 for controlling the opening and closing of the third connection hole and / or the fourth connection hole 511.

[0171] By setting a control valve 520 on the main body 510 of the second busbar 500 to control the opening and closing of the third connection hole and / or the fourth connection hole 511, the negative pressure cup 400 can be connected to the battery cell 2. The control valve 520 controls the opening of the third connection hole and / or the fourth connection hole 511 to provide negative pressure to the battery cell 2 through the negative pressure cup 400. After the formation of the battery cell 2 is completed, the control valve 520 can control the closing of the third connection hole and / or the fourth connection hole 511 to stop providing negative pressure to the negative pressure cup 400.

[0172] In some embodiments, the bracket 300 includes at least two first support plates 310, which are respectively connected to the two ends of the second busbar 500 along the first direction X, and are respectively detachably connected to two end plates 120.

[0173] By setting at least two first support plates 310, the at least two first support plates 310 are respectively connected to the two ends of the second manifold 500 along the first direction X, and the at least two first support plates 310 are respectively detachably connected to the two end plates 120, so that the second manifold 200 is located between the two end plates 120, which facilitates connection with the negative pressure cup 400.

[0174] See Figure 15, which is a partially enlarged structural diagram of point A in the formation equipment in Figure 1.

[0175] In some embodiments, the first support plate 310 and the end plate 120 are connected by a connecting mechanism 600. The connecting mechanism 600 includes a first latching member 610, a second latching member 620, and an elastic member 630. The first latching member 610 and the second latching member 620 are rotatably connected to the end plate 120, respectively. The first end of the first latching member 610 is provided with a first latching portion 611, and the first end of the second latching member 620 is provided with a second latching portion 621. The second ends of the first latching member 610 and the second ends of the second latching member 620 are connected by the elastic member 630. The first support plate 310 is provided with a first latching groove 311 and a second latching groove 312. The first latching groove 311 engages with the first latching portion 611, and the second latching groove 312 engages with the second latching portion 621.

[0176] The connecting mechanism 600 includes a first fastener 610, a second fastener 620, and an elastic element 630. The first fastener 610 can engage with the first fastening groove 311 of the first support plate 310, and the second fastener 620 can engage with the second fastening groove 312 of the first support plate 310, thereby connecting the tray 10 to the first support plate 310. The first fastener 610 and the second fastener 620 are rotatably connected to the end plate 120, allowing them to rotate relative to the end plate 120 to engage or disengage with the first fastening groove 311 and the second fastening groove 312, respectively, thus achieving a detachable connection between the first support plate 310 and the end plate 120. The second end of the first fastener 610 and the second end of the second fastener 620 are connected by an elastic member 630, so that the elastic member 630 can provide elastic force to the first fastener 610 and the second fastener 620 so that the first fastener 610 is kept engaged with the first fastening groove 311 and the second fastener 620 is kept engaged with the second fastening groove 312, making the connecting mechanism 600 more stable.

[0177] In some embodiments, the bracket 300 includes a second support plate 320, the two ends of which are respectively connected to at least two first support plates 310, and the negative pressure cup 400 is disposed on the second support plate 320. Along the direction of gravity z, the second support plate 320 is located between the second manifold 500 and the tray 10.

[0178] By setting a second support plate 320, both ends of the second support plate 320 are respectively connected to at least two first support plates 310. The negative pressure cup 400 is set on the second support plate 320. Along the direction of gravity z, the second support plate 320 is located between the second busbar 500 and the tray 10, which facilitates the connection of the end of the negative pressure cup 400 facing the tray 10 to the battery cell 2, and the end of the negative pressure cup 400 facing away from the tray 10 to the second busbar 500.

[0179] Referring to Figures 1 to 15, some embodiments of this application provide a formation apparatus 1. The formation apparatus 1 includes a tray 10 and a negative pressure device 20. The tray 10 includes a tray body 100 and at least one row of capsule assemblies 200. The capsule assemblies 200 are disposed on the tray body 100. Each row of capsule assemblies 200 includes a plurality of capsule assemblies 200 arranged at intervals along a first direction X. A battery cell 2 is placed between two adjacent capsule assemblies 200. The negative pressure device 20 includes a support 300 and a negative pressure cup 400. The support 300 is connected to the tray body 100, and the negative pressure cup 400 is disposed on...

[0180] In some embodiments, the capsule assembly 200 includes a capsule 210 and a frame 220, the frame 220 being connected to the tray body 100, the capsule 210 being disposed within the frame 220, and the edge of the capsule 210 being connected to the frame 220.

[0181] In some embodiments, the frame 220 includes a first sub-frame 221 and a second sub-frame 222, which are arranged and connected to each other along a first direction X. The first sub-frame 221 has a first opening 2211, and a first annular groove 2212 is provided on the side of the first sub-frame 221 facing the second sub-frame 222, with the inner periphery of the first annular groove 2212 forming the first opening 2211. The edge of the bladder 210 is sandwiched between the first sub-frame 221 and the second sub-frame 222.

[0182] In some embodiments, the second subframe 222 has a second opening 2221, and the first subframe 221 is provided with a second annular groove 2222 on one side facing the second subframe 222. The inner periphery of the second annular groove 2222 forms the second opening 2221. The first opening 2211 and the second opening 2221 are arranged opposite to each other along the first direction X, and the capsule 210 is exposed to the first opening 2211 and the second opening 2221.

[0183] In some embodiments, the first subframe 221 is provided with a first limiting protrusion 2213 on the side facing the second subframe 222, the second subframe 222 is provided with a first limiting groove 2223 on the side facing the first subframe 221, and the edge of the bladder 210 is provided with a limiting hole 211. The first limiting protrusion 2213 passes through the limiting hole 211 and is inserted into the first limiting groove 2223.

[0184] In some embodiments, a first support protrusion 2214 is provided on the side of the first sub-frame 221 facing away from the second sub-frame 222. The first support protrusion 2214 is provided with a first groove 2214a, which penetrates the first support protrusion 2214 along the gravity direction z. The first support protrusion 2214 is used to support the battery cell 2 in the gravity direction z.

[0185] In some embodiments, a second support protrusion 2224 is provided on the side of the second subframe 222 facing away from the first subframe 221. The second support protrusion 2224 is provided with a second groove 2224a. The second groove 2224a passes through the second support protrusion 2224 along the gravity direction Z. The first support protrusion 2214 and the second support protrusion 2224 are used to support the battery cell 2 in the gravity direction Z.

[0186] In some embodiments, a second limiting protrusion 2215 and a third limiting protrusion are provided on the side of the first subframe 221 facing away from the second subframe 222, and a first opening 2211 is located between the second limiting protrusion 2215 and the third limiting protrusion along the second direction Y.

[0187] In some embodiments, the second subframe 222 is provided with a fourth limiting protrusion 2225 and a fifth limiting protrusion 2226 on the side of the second subframe 222 away from the first subframe 221, and the second opening 2221 is located between the fourth limiting protrusion 2225 and the fifth limiting protrusion 2226 along the second direction Y.

[0188] In some embodiments, the capsule 210 includes a first component 212, a first connector 214, and a second component 213 stacked along a first direction X. The first component 212 includes a first frame 2121 and a first diaphragm 2122, the first diaphragm 2122 being disposed within and connected to the first frame 2121. The second component 213 includes a second frame 2131 and a second diaphragm 2132, the second diaphragm 2132 being disposed within and connected to the second frame 2131. The first frame 2121 is connected to the second frame 2131, and a receiving cavity for containing fluid is formed between the first diaphragm 2122 and the second diaphragm 2132. The first connector 214 is annular and is sandwiched between the first frame 2121 and the second frame 2131.

[0189] In some embodiments, the tray body 100 includes a bottom plate 110, two end plates 120, four second connectors 130, and two side plates 140. The two end plates 120 are respectively disposed at both ends of the bottom plate 110 along the first direction X. The two ends of the four second connectors 130 are respectively connected to the two end plates 120. The two side plates 140 are respectively disposed on both sides of the bladder assembly 200 along the second direction Y. Each side plate 140 has two second connectors 130 disposed on the side facing away from the bladder assembly 200.

[0190] In some embodiments, the negative pressure device 20 includes two second manifolds 500, four first support plates 310, and two second support plates 320. Each pair of the four first support plates 310 is connected to an end plate 120. The two ends of each second support plate 320 are connected to the two first support plates 310 respectively. The two ends of each second manifold 500 are connected to the two first support plates 310 respectively. Along the direction of gravity z, the second support plates 320 are disposed between the tray 10 and the manifolds 500.

[0191] In some embodiments, the first support plate 310 and the end plate 120 are connected by a connecting mechanism 600. The connecting mechanism 600 includes a first latching member 610, a second latching member 620, and an elastic member 630. The first latching member 610 and the second latching member 620 are rotatably connected to the end plate 120, respectively. The first end of the first latching member 610 is provided with a first latching portion 611, and the first end of the second latching member 620 is provided with a second latching portion 621. The second ends of the first latching member 610 and the second ends of the second latching member 620 are connected by the elastic member 630. The first support plate 310 is provided with a first latching groove 311 and a second latching groove 312. The first latching groove 311 engages with the first latching portion 611, and the second latching groove 312 engages with the second latching portion 621.

[0192] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0193] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A chemical formation device, wherein, include: A tray includes a tray body and at least one row of capsule assemblies, the capsule assemblies being disposed on the tray body, each row of capsule assemblies including a plurality of capsule assemblies spaced apart along a first direction, and a battery cell being placed between two adjacent capsule assemblies. A negative pressure device includes a bracket and a negative pressure cup. The bracket is connected to the tray body, and the negative pressure cup is disposed on the bracket and is used to connect to the battery cell.

2. The chemical formation equipment according to claim 1, wherein, The capsule assembly includes a capsule and a frame, the frame being connected to the tray body, the capsule being disposed within the frame, and the edge of the capsule being connected to the frame.

3. The chemical formation equipment according to claim 2, wherein, The frame includes a first subframe and a second subframe, which are arranged along the first direction and connected to each other. The edge of the capsule is sandwiched between the first subframe and the second subframe.

4. The chemical formation equipment according to claim 3, wherein, The first subframe has a first opening, the second subframe has a second opening, the first opening and the second opening are arranged opposite to each other along the first direction, and the capsule is exposed through the first opening and the second opening.

5. The chemical formation apparatus according to claim 4, wherein, The first subframe has a first annular groove on the side facing the second subframe, and the inner periphery of the first annular groove forms the first opening; The first subframe has a second annular groove on the side facing the second subframe, and the inner periphery of the second annular groove forms the second opening; The first annular groove and the second annular groove together form a receiving groove, and the edge of the bladder is received in the receiving groove.

6. The chemical formation apparatus according to any one of claims 3-5, wherein, The first subframe has a first limiting protrusion on the side facing the second subframe, the second subframe has a first limiting groove on the side facing the first subframe, and the edge of the bladder has a limiting hole. The first limiting protrusion passes through the limiting hole and is inserted into the first limiting groove.

7. The chemical formation apparatus according to any one of claims 3-6, wherein, The first subframe has a first support protrusion on the side facing away from the second subframe, and the second subframe has a second support protrusion on the side facing away from the first subframe. The first support protrusion and the second support protrusion are used to support the battery cell in the direction of gravity.

8. The chemical formation apparatus according to any one of claims 3-7, wherein, The first subframe has a second limiting protrusion and a third limiting protrusion on the side facing away from the second subframe. Along the second direction, the first opening is located between the second limiting protrusion and the third limiting protrusion. The second limiting protrusion and the third limiting protrusion are used to limit the battery cell in the second direction. The first direction, the second direction and the gravity direction are perpendicular to each other.

9. The chemical formation apparatus according to claim 8, wherein, The outer periphery of the first sub-frame includes a first sidewall and a second sidewall opposite to each other along a second direction. Along the second direction, the second limiting protrusion is recessed relative to the first sidewall of the first sub-frame; along the second direction, the third limiting protrusion is recessed relative to the second sidewall of the first sub-frame.

10. The chemical formation apparatus according to any one of claims 2-9, wherein, The capsule includes a first component and a second component stacked along the first direction; The first component includes a first frame and a first diaphragm, wherein the first diaphragm is disposed within the first frame and connected to the first frame; The second component includes a second frame and a second diaphragm, wherein the second diaphragm is disposed within the second frame and connected to the second frame; The first frame is connected to the second frame, and a receiving cavity for containing fluid is formed between the first diaphragm and the second diaphragm.

11. The chemical formation apparatus according to claim 10, wherein, The capsule further includes a first connector, which is annular and sandwiched between the first frame and the second frame.

12. The chemical formation apparatus according to claim 10, wherein, The capsule also includes a valve for allowing fluid to enter and exit the accommodating cavity, the valve being mounted on the first frame and / or the second frame.

13. The chemical formation apparatus according to claim 12, wherein, The tray also includes a first manifold having a plurality of first connection holes and at least one second connection hole. The plurality of first connection holes are connected one-to-one with the valves of the plurality of bladder assemblies, and the second connection hole is used to connect to a fluid source.

14. The chemical formation apparatus according to any one of claims 1-13, wherein, The tray includes multiple rows of bladder assemblies arranged side by side along a second direction; The first direction, the second direction, and the direction of gravity are perpendicular to each other.

15. The chemical formation apparatus according to any one of claims 1-14, wherein, The pallet body includes a bottom plate, two end plates, and a second connector. The two end plates are respectively disposed at both ends of the bottom plate along the first direction, and the two ends of the second connector are respectively connected to the two end plates.

16. The chemical formation apparatus according to claim 15, wherein, The tray body also includes two side plates, which are respectively disposed on both sides of the capsule assembly along the second direction; Along the second direction, each of the side plates is provided with at least one of the second connectors on the side facing away from the capsule assembly; The first direction, the second direction, and the direction of gravity are perpendicular to each other.

17. The chemical formation apparatus according to any one of claims 1-14, wherein, The bracket is detachably connected to the tray body.

18. The chemical formation apparatus according to any one of claims 1-14, wherein, One end of the negative pressure cup is connected to a suction nozzle, which is used to connect to the battery cell.

19. The chemical formation apparatus according to any one of claims 1-14, wherein, The negative pressure device includes a second manifold and at least one row of negative pressure cups. Each row of negative pressure cups includes a plurality of negative pressure cups arranged along the first direction. The second manifold has a plurality of third connection holes and at least one fourth connection hole. The plurality of third connection holes are connected to the plurality of negative pressure cups in a one-to-one correspondence. The fourth connection hole is used to connect to a negative pressure source.

20. The chemical formation apparatus according to claim 19, wherein, The second manifold includes a main body and a control valve. The third connection hole and the fourth connection hole are disposed on the main body, and the control valve is disposed on the main body for controlling the opening and closing of the third connection hole and / or the fourth connection hole.

21. The chemical formation apparatus according to claim 19, wherein, The bracket includes at least two first support plates, which are respectively connected to both ends of the second busbar along the first direction, and are respectively detachably connected to the two end plates.

22. The chemical formation apparatus according to claim 21, wherein, The first support plate is connected to the two end plates via a connecting mechanism; The connecting mechanism includes a first fastener, a second fastener, and an elastic element. The first fastener and the second fastener are rotatably connected to the end plate. The first end of the first fastener is provided with a first fastening portion, and the first end of the second fastener is provided with a second fastening portion. The second ends of the first fastener and the second fastener are connected through the elastic element. The first support plate is provided with a first fastening groove and a second fastening groove. The first fastening groove engages with the first fastening portion, and the second fastening groove engages with the second fastening portion.

23. The chemical formation apparatus according to claim 21, wherein, The bracket includes a second support plate, the two ends of which are respectively connected to at least two of the first support plates. The negative pressure cup is disposed on the second support plate. Along the direction of gravity, the second support plate is located between the second manifold and the tray.

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