Tray

Abstract

Provided in the embodiments of the present application is a tray. The tray is used for carrying battery cells. The tray comprises a tray body and at least one row of bladder assemblies, the at least one row of bladder assemblies being disposed on the tray body, each row of the bladder assemblies comprising a plurality of bladder assemblies arranged at intervals in a first direction, and battery cells being placed between every two adjacent bladder assemblies. The bladder assemblies are arranged on the tray, and the battery cells are placed between every two adjacent bladders, such that the bladder assemblies can deform and swell by being filled with a fluid, so as to abut against the battery cells and fix same. The bladder assemblies can apply uniform pressure on the battery cells, thereby reducing the possibility of the battery cells being damaged, and improving the finished product quality of the battery cells.

Description

tray

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application 202410501040.8 entitled “Tray”, filed on April 24, 2024, 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 tray. 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 tray that can improve the manufacturing quality of battery cells.

[0008] In a first aspect, embodiments of this application provide a tray for carrying battery cells. The tray includes a tray body and at least one row of bladder assemblies. The at least one row of bladder assemblies is disposed on the tray body. Each row of bladder assemblies includes a plurality of bladder assemblies spaced apart along a first direction. The space between two adjacent bladder assemblies is used to place battery cells.

[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, abutting against and fixing the battery cell. The pressure exerted by the capsule assembly on the battery cell is uniform, which can reduce the possibility of damage to the battery cell and help improve the finished quality 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] 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 individual cells between adjacent capsule assemblies. Connecting the edge of the capsule to the frame also fixes the position of the capsule assembly within the tray body and the distance between multiple individual cells, facilitating connection between individual cells and the negative pressure device, reducing the possibility of misalignment between the negative pressure device and the individual cells, thus reducing the risk of fluid leakage and improving the formation effect of the individual cells, thereby improving their quality. It also facilitates connection between individual cells and the current probes of the formation device, reducing the possibility of misalignment and improving the formation efficiency of the individual cells. With individual cells of different sizes fixed in position within the tray body, there is no need to adjust the negative pressure device for forming individual cells of different sizes, improving the preparation efficiency of the individual cells. By placing the capsule within the frame and connecting its edge to the frame, the capsule can be fixed, and the middle of the capsule can deform and abut against the individual cells to secure them.

[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] By making the frame include a first subframe and a second subframe, and the edge of the capsule is sandwiched between the first subframe and the second subframe, 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] By exposing the capsule to the first and second openings, the capsule can extend out of the first and second openings when it deforms, so as to contact 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] By providing a first annular groove on the side of the first subframe facing the second subframe, and a second annular groove on the side of the second subframe facing the first subframe, the first and second annular grooves together form a receiving groove. The edge of the capsule is received in the receiving groove, which makes the frame fixation effect on the capsule better, the capsule is less likely to shift relative to the frame, and the overall structure of the capsule assembly is more stable.

[0018] In some embodiments of this application, the first subframe has a first snap-fit ​​portion, and the second subframe has a second snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion cooperate with each other to connect the first subframe and the second subframe.

[0019] By having the first subframe have a first snap-fit ​​part and the second subframe have a second snap-fit ​​part, and by having the first snap-fit ​​part and the second snap-fit ​​part cooperate with each other to connect the first subframe and the second subframe, the connection between the first subframe and the second subframe can be made more reliable and the overall structure of the frame can be more stable.

[0020] 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.

[0021] 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, making it less likely for the first subframe to shift relative to the second subframe and the capsule to shift relative to the frame on the vertical plane of the first direction, and making the overall structure of the capsule assembly more stable.

[0022] 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.

[0023] By providing a first support protrusion on the side of the first subframe facing away from the second subframe, and a second support protrusion on the side of the second subframe facing away from the first subframe, the first and second support protrusions 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.

[0024] In some embodiments of this application, the first support protrusion is provided with a first groove, which penetrates the first support protrusion along the direction of gravity; the second support protrusion is provided with a second groove, which penetrates the second support protrusion along the direction of gravity.

[0025] By setting a first groove that penetrates the first support protrusion along the direction of gravity, and a second groove that penetrates the second support protrusion along the direction of gravity, the first groove and the second groove can avoid the lifting mechanism that lifts the battery cell, making it easier to remove the battery cell from the tray. They can also be used for heat dissipation of the battery cell, which helps to improve the heat dissipation effect of the battery cell.

[0026] 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.

[0027] 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, which can reduce the possibility of the battery cell being displaced relative to the capsule assembly in the second direction, thereby fixing the position of the battery cell in the tray and facilitating connection with the negative pressure device.

[0028] 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.

[0029] By making the first limiting protrusion recessed relative to the first sidewall of the first subframe along the second direction, and the second limiting protrusion recessed relative to the second sidewall of the first subframe along the second direction, the bladder assembly is mounted on the tray body, the first sidewall of the first subframe 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.

[0030] In some embodiments of this application, a fourth limiting protrusion and a fifth limiting protrusion are provided on the side of the second subframe facing away from the first subframe. Along the second direction, a second opening is located between the fourth limiting protrusion and the fifth limiting protrusion. The fourth limiting protrusion and the fifth 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.

[0031] By providing a fourth limiting protrusion and a fifth limiting protrusion on the side of the second subframe facing away from the first subframe, the fourth limiting protrusion and the fifth limiting protrusion can limit the battery cell in the second direction, which can reduce the possibility of the battery cell being displaced relative to the capsule assembly in the second direction, thereby fixing the position of the battery cell in the tray and facilitating connection with the negative pressure device.

[0032] 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.

[0033] By placing a first diaphragm within and connecting to a first frame, and placing a second diaphragm within and connecting to a second frame, the first and second frames can be fixed together. A receiving cavity for accommodating fluid is formed between the first and second diaphragms. After the fluid flows into the receiving cavity, the first and second diaphragms can deform and expand to abut against and fix the battery cell. After the fluid flows out of the receiving cavity, the first and second diaphragms can deform and contract to separate from the battery cell, facilitating the removal of the battery cell.

[0034] In some embodiments of this application, along a first direction, the thickness of the first frame is greater than the thickness of the first film, and the thickness of the second frame is greater than the thickness of the second film.

[0035] By making the thickness of the first frame greater than the thickness of the first membrane and the thickness of the second frame greater than the thickness of the second membrane along the first direction, the first and second frames can be made more rigid, less prone to deformation, and the position of the capsule more stable.

[0036] 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.

[0037] By making the first connector ring-shaped and sandwiched between the first and second side frames, it can support the bladder body, making the first and second side frames less prone to deformation and making the structure of the bladder body more stable.

[0038] 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.

[0039] By installing valves, fluid can easily flow into or out of the containment chamber.

[0040] In some embodiments of this application, a third groove is provided on the side of the first frame facing the second frame, and a fourth groove is provided on the side of the second frame facing the first frame. The third groove and the fourth groove together form a first through hole communicating with the accommodating cavity, and one end of the valve is inserted into the first through hole.

[0041] By providing a third groove on the side of the first frame facing the second frame and a fourth groove on the side of the second frame facing the first frame, the third groove and the fourth groove together form a first through hole communicating with the accommodating cavity, and one end of the valve is inserted into the first through hole, the preparation of the first through hole can be facilitated.

[0042] In some embodiments of this application, the first connector has a second through hole for connecting a valve.

[0043] By providing a second through hole for connecting the valve in the first connector, valve installation can be facilitated.

[0044] In some embodiments of this application, the tray further includes a 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.

[0045] By setting up a manifold, the multiple first connection holes of the manifold are connected one-to-one with the valves of multiple bladder assemblies. The second connection hole of the manifold is used to connect to the fluid source, which can merge the fluid in multiple bladder assemblies, making it convenient to fill or extract fluid into multiple bladder assemblies at the same time, so as to realize the expansion or contraction of the bladder assemblies.

[0046] 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.

[0047] By setting a base plate, two end plates, and a second connector, with the two end plates respectively located at both ends of the base plate along the first direction and the two ends of the second connector respectively connected to the two end plates, the tray body can have high stress resistance and the tray body is not easily deformed due to stress, thus playing a protective role for the bladder assembly and battery cells.

[0048] 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.

[0049] By setting side plates, the stress performance of the tray body in the second direction can be further improved, making the tray body provide better protection for the bladder assembly and battery cells.

[0050] In some embodiments of this application, the capsule assembly includes a frame, the frame including a body and a sixth limiting protrusion, the sixth limiting protrusion protruding from the body in a second direction and spaced apart from the body, and a second limiting groove on the side of the side plate facing the capsule assembly, the sixth limiting protrusion being received in the second limiting groove.

[0051] By having the sixth limiting protrusion of the frame accommodated in the second limiting groove of the side plate, the side plate can limit the frame along the first direction, thereby fixing the position of the capsule assembly within the tray body.

[0052] In some embodiments of this application, the base plate has a third through hole that penetrates the base plate along the direction of gravity.

[0053] By setting a third through hole through the base plate along the direction of gravity, the third through hole can avoid the lifting mechanism of the battery cell, making it easier to remove the battery cell from the tray. It can also be used for heat dissipation of the battery cell, which helps to improve the heat dissipation effect of the battery cell.

[0054] 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.

[0055] By setting up multiple rows of capsule components arranged side by side along the second direction, the tray can accommodate more battery cells, which helps to improve the preparation efficiency of battery cells. Attached Figure Description

[0056] 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.

[0057] Figure 1 is a three-dimensional structural diagram of a tray provided in some embodiments of this application;

[0058] Figure 2 is a perspective view of a portion of the structure of the tray body assembly provided in some embodiments of this application;

[0059] Figure 3 is a three-dimensional structural diagram of the tray frame provided in some embodiments of this application;

[0060] Figure 4 is a three-dimensional structural diagram of the first sub-frame of the tray provided in some embodiments of this application;

[0061] Figure 5 is a three-dimensional structural diagram of the second sub-frame of the tray provided in some embodiments of this application;

[0062] Figure 6 is a three-dimensional structural diagram of the tray frame provided in some other embodiments of this application;

[0063] Figure 7 is a three-dimensional structural diagram of the tray body provided in some embodiments of this application;

[0064] Figure 8 is a perspective view of a portion of the structure of the tray body provided in some embodiments of this application;

[0065] Figure 9 is a perspective view of a portion of the structure of the tray body provided in some embodiments of this application;

[0066] Figure 10 is a three-dimensional structural diagram of the tray body provided in some other embodiments of this application;

[0067] Figure 11 is a three-dimensional structural schematic diagram of the tray body assembly provided in some other embodiments of this application;

[0068] Figure 12 is a structural schematic diagram of the side panel of the tray provided in some embodiments of this application from one perspective;

[0069] Figure 13 is a structural schematic diagram of the tray body assembly provided in some embodiments of this application from one perspective;

[0070] Figure 14 is a three-dimensional structural diagram of a tray provided in some other embodiments of this application.

[0071] The accompanying drawings are not drawn to scale.

[0072] Marking Explanation: 10-Tray; 100-Tray Body; 110-Base Plate; 120-End Plate; 130-Second Connector; 140-Side Plate; 141-Fifth Groove; 142-Second Limiting Groove; 200-Bag Assembly; 210-Bag; 211-First Limiting Hole; 212-First Component; 2121-First Frame; 2121a-Third Groove; 2122-First Diaphragm; 213-Second Component; 2131-Second Frame; 2131a-Fourth Groove; 2132-Second Diaphragm; 214-First Connector; 2141-Second Through Hole; 2142-Second Limiting Hole; 215-Valve; 220-Frame; 220a-Main Body; 220b-Sixth Limiting Protrusion; 2201b-Limiting Part; 2202b-Connecting Part; 221-First Limiting Protrusion; 2202b-Securing Part; 221-Second Limiting Protrusion; 2203-Second Limiting Part; 2204-Second Limiting Part; 2205-Second Limiting Protrusion; 2206-Second Limiting Part; 2207-Second Limiting Part; 2208-Second Limiting Part; 2209-Second Limiting Part; 220 ... 1. Sub-frame; 221a-First latching part; 221b-First sidewall; 221c-Second sidewall; 2211-First opening; 2212-First annular groove; 2213-First limiting protrusion; 2214-First support protrusion; 2214a-First groove; 2215-Second limiting protrusion; 2216-Third limiting protrusion; 222-Second sub-frame; 222a-Second latching part; 222b-Third sidewall; 222c-Fourth sidewall; 2221-Second opening; 2222-Second annular groove; 2223-First limiting groove; 2224-Second support protrusion; 2224a-Second groove; 2225-Fourth limiting protrusion; 2226-Fifth limiting protrusion; 2-Battery cell; X-First direction; Y-Second direction; Z-Gravity direction. Detailed Implementation

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] In this application, "multiple" means two or more (including two).

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] Based on the above considerations, this application provides a tray for carrying battery cells. The tray includes a tray body and at least one row of bladder assemblies. The at least one row of bladder assemblies is disposed on the tray body. Each row of bladder assemblies includes a plurality of bladder assemblies arranged at intervals along a first direction. The space between two adjacent bladder assemblies is used to place battery cells.

[0083] In the technical solution of this application, 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, abutting against and fixing the battery cell. The pressure exerted by the capsule assembly on the battery cell is uniform, which can reduce the possibility of damage to the battery cell and improve the finished quality of the battery cell.

[0084] 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.

[0085] 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.

[0086] Referring to Figure 1, Figure 1 is a three-dimensional structural schematic diagram of a tray provided in some embodiments of this application.

[0087] This application provides a tray 10 for carrying a battery cell 2. The tray 10 includes a tray body 100 and at least one row of capsule assemblies 200. The at least one row of capsule assemblies 200 is 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. The space between two adjacent capsule assemblies 200 is used to place the battery cell 2.

[0088] By setting the capsule assembly 200 on the tray 10 and placing the battery cell 2 between two adjacent capsules 210, 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 can reduce the possibility of damage to the battery cell 2 and help improve the finished quality of the battery cell 2.

[0089] 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.

[0090] In other embodiments, the battery cell 2 may also be flat, cylindrical or other shapes.

[0091] Referring to Figure 2, Figure 2 is a perspective view of a portion of the structure of the tray body assembly provided in some embodiments of this application.

[0092] 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.

[0093] 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 2. The quality 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 200 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.

[0094] Referring to Figures 3 to 5, Figure 3 is a three-dimensional structural diagram of the pallet frame provided in some embodiments of this application; Figure 4 is a three-dimensional structural diagram of the first sub-frame of the pallet provided in some embodiments of this application; and Figure 5 is a three-dimensional structural diagram of the second sub-frame of the pallet provided in some embodiments of this application.

[0095] 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.

[0096] 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.

[0097] In other embodiments, the first subframe 221 and the second subframe 222 may also be integrally formed.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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 (not shown in the figure), and the edge of the bladder 210 is received in the receiving groove.

[0104] 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.

[0105] In some embodiments, the first subframe 221 has a first snap-fit ​​portion 221a, and the second subframe 222 has a second snap-fit ​​portion 222a. The first snap-fit ​​portion 221a and the second snap-fit ​​portion 222a cooperate with each other to connect the first subframe 221 and the second subframe 222.

[0106] By having the first subframe 221 have a first snap-fit ​​portion 221a and the second subframe 222 have a second snap-fit ​​portion 222a, the first snap-fit ​​portion 221a and the second snap-fit ​​portion 222a cooperate with each other to connect the first subframe 221 and the second subframe 222, thereby making the connection between the first subframe 221 and the second subframe 222 more reliable and the overall structure of the frame 220 more stable.

[0107] In some embodiments, the first snap-fit ​​portion 221a can be a snap-fit ​​protrusion, and the second snap-fit ​​portion 222a can be a snap-fit ​​groove. The snap-fit ​​protrusion is accommodated in the snap-fit ​​groove to realize the interconnection of the first subframe 221 and the second subframe 222.

[0108] In some embodiments, the first snap-fit ​​portion 221a is disposed on the outer periphery of the first sub-frame 221, and the second snap-fit ​​portion 222a is disposed on the outer periphery of the second sub-frame 222. The snap-fit ​​protrusion is accommodated in the snap-fit ​​groove, which can realize the mutual positioning of the first sub-frame 221 and the second sub-frame 222 in the direction of gravity Z.

[0109] In other embodiments, the first snap-fit ​​portion 221a may be disposed between the outer periphery and the inner periphery of the first sub-frame 221, and the second snap-fit ​​portion 222a may be disposed between the outer periphery and the inner periphery of the second sub-frame 222. The snap-fit ​​protrusion is accommodated in the snap-fit ​​groove, which can realize the mutual positioning of the first sub-frame 221 and the second sub-frame 222 in the second direction Y and the gravity direction Z.

[0110] In other embodiments, the first snap-fit ​​portion 221a may be a snap-fit ​​groove, and the second snap-fit ​​portion 222a may be a snap-fit ​​protrusion.

[0111] 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.

[0112] 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.

[0113] In other embodiments, a first 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.

[0114] 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 the capsule 210 is provided with a second elastic member (not shown in the figure) 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.

[0115] 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.

[0116] By providing a first support protrusion 2214 on the side of the first subframe 221 facing away from the second subframe 222, and 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 gravity direction Z, thereby fixing the position of the battery cell 2 in the gravity direction Z, which is convenient for connection with the negative pressure device.

[0117] In other embodiments, the battery cell 2 may also be directly supported on the tray body 100.

[0118] In some embodiments, 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 second support protrusion 2224 is provided with a second groove 2224a, which penetrates the second support protrusion 2224 along the gravity direction Z.

[0119] By setting a first groove 2214a that penetrates the first support protrusion 2214 along the direction of gravity Z and a second groove 2224a that penetrates the second support protrusion 2224 along the direction of gravity Z, the first groove 2214a and the second groove 2224a can avoid the lifting mechanism of the battery cell 2, making it easier to remove the battery cell 2 from the tray 10, and can also be used for heat dissipation of the battery cell 2, which is beneficial to improving the heat dissipation effect of the battery cell 2.

[0120] In some embodiments, a plurality of first grooves 2214a may be provided on the first support protrusion 2214, such as two, three, or four as shown in FIG3. The plurality of first grooves 2214a are spaced apart along the second direction Y, which can make the cross-sectional area of ​​the plurality of first grooves 2214a larger and the heat dissipation effect of the battery cell 2 better.

[0121] In some embodiments, a plurality of second grooves 2224a may be provided on the second support protrusion 2224, such as two, three, or four as shown in FIG3. The plurality of second grooves 2224a are spaced apart along the second direction Y, which can make the cross-sectional area of ​​the plurality of second grooves 2224a larger and the heat dissipation effect of the battery cell 2 better.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] Referring to Figure 6, which is a three-dimensional structural schematic diagram of the tray frame provided in some other embodiments of this application.

[0135] 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 10.

[0136] Referring to Figures 7 and 8, Figure 7 is a three-dimensional structural diagram of the tray body provided in some embodiments of this application; Figure 8 is a three-dimensional structural diagram of a portion of the tray body provided in some embodiments of this application.

[0137] 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 (not shown in the figure) for receiving fluid is formed between the first diaphragm 2122 and the second diaphragm 2132.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] In some embodiments, the length of the first diaphragm 2122 along the gravity direction Z is greater than or equal to the length of the first opening 2211 along the gravity 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.

[0146] In some embodiments, the length of the second diaphragm 2132 along the gravity direction Z is greater than or equal to the length of the second opening 2221 along the gravity 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.

[0147] Please also refer to Figure 9, which is a three-dimensional schematic diagram of a portion of the structure of a tray body provided in some embodiments of this application.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] In other embodiments, the first connector 214 may also be made of materials such as plastic or carbon fiber.

[0152] 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.

[0153] By setting valve 215, fluid can easily flow into or out of the receiving cavity through valve 215.

[0154] In some embodiments, a third groove (not shown in the figure) is provided on the side of the first frame 2121 facing the second frame 2131, and a fourth groove 2131a is provided on the side of the second frame 2131 facing the first frame 2121. The third groove and the fourth groove 2131a together form a first through hole communicating with the accommodating cavity, and one end of the valve 215 is inserted into the first through hole.

[0155] By providing a third groove on the side of the first frame 2121 facing the second frame 2131 and a fourth groove 2131a on the side of the second frame 2131 facing the first frame 2121, the third groove and the fourth groove 2131a together form a first through hole communicating with the accommodating cavity. One end of the valve 215 is inserted into the first through hole, which facilitates the preparation of the first through hole.

[0156] Referring to Figure 10, which is a three-dimensional structural diagram of the tray body provided in some other embodiments of this application.

[0157] 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.

[0158] In other embodiments, valve 215 may also be inserted into the second frame 2131.

[0159] In some embodiments, the first connector 214 has a second through hole 2141 for connecting the valve 215.

[0160] By providing a second through hole 2141 for connecting the valve 215 in the first connector 214, the installation of the valve 215 can be facilitated.

[0161] In some embodiments, a threaded sleeve may be provided in the second through hole 2141. The threaded sleeve has an internal thread, and the valve 215 has an external thread. The threaded sleeve is threadedly connected to the valve 215, which facilitates the installation of the valve 215.

[0162] In some embodiments, the first connector 214 is provided with a second limiting hole 2142, and the first limiting protrusion 2213 is provided through the second limiting hole 2142, so that the first connector 214 is fixed relative to the frame 220.

[0163] Referring to Figure 2, in some embodiments, valve 215 is disposed through frame 220 along the second direction Y.

[0164] Referring to Figure 11, Figure 11 is a three-dimensional structural schematic diagram of the tray body assembly provided in some other embodiments of this application.

[0165] 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.

[0166] In some embodiments, the tray 10 further includes a manifold (not shown) 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 the valves 215 of the plurality of bladder assemblies 200, and the second connection hole is used to connect to a fluid source.

[0167] By setting up a manifold, the multiple first connection holes of the 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 the 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.

[0168] The manifold enables the fluid supplied by the fluid source to be evenly distributed to multiple capsule assemblies 200.

[0169] In other embodiments, the valve 215 of each capsule assembly 200 is directly connected to a fluid source.

[0170] Referring to Figure 1, 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] In some embodiments, a plurality of fifth grooves 141 may be provided on the side of the side plate 140 facing away from the bladder assembly 200, which can reduce the weight of the side plate 140 and thus reduce the overall weight of the tray 10.

[0175] In some embodiments, each side plate 140 may be provided with a plurality of second connectors 130 on the side facing away from the bladder assembly 200. The plurality of second connectors 130 are spaced apart along the gravity direction Z, which can make the connection strength between the two end plates 120 higher, the possibility of deformation of the two end plates 120 under force less, and the overall structure of the tray body 100 more stable.

[0176] In some embodiments, the second connector 130 may be a connecting rod.

[0177] Referring to Figures 3, 12 and 13, Figure 12 is a structural schematic diagram of the side panel of a tray provided in some embodiments of this application from one perspective; Figure 13 is a structural schematic diagram of the bladder assembly of a tray provided in some embodiments of this application from one perspective.

[0178] In some embodiments, the frame 220 includes a body 220a and a sixth limiting protrusion 220b, the sixth limiting protrusion 220b protruding out of the body 220a along the second direction Y and spaced apart from the body 220a, and the side plate 140 having a second limiting groove 142 on the side facing the capsule assembly 200, the sixth limiting protrusion 220b being accommodated in the second limiting groove 142.

[0179] By allowing the sixth limiting protrusion 220b of the frame 220 to be accommodated in the second limiting groove 142 of the side plate 140, the side plate 140 can limit the frame 220 along the first direction X, thereby fixing the position of the capsule assembly 200 within the tray body 100.

[0180] In some embodiments, the sixth limiting protrusion 220b includes a limiting portion 2201b and a connecting portion 2202b. The limiting portion 2201b protrudes from the main body 220a along the second direction Y, and the connecting portion 2202b extends along the gravity direction Z. One end of the connecting portion 2202b is connected to the main body 220a, and the other end is connected to the limiting portion 2201b. Along the second direction Y, the connecting portion 2202b is spaced from the main body 220a. This allows the sixth limiting protrusion 220b to deform under force, so as to engage with the side plate 140.

[0181] In some embodiments, the base plate 110 has a third through hole (not shown in the figure) that penetrates the base plate 110 along the gravity direction Z.

[0182] By providing a third through hole through the base plate 110 along the direction of gravity Z, the third through hole can avoid the lifting mechanism of the battery cell 2, making it easier to remove the battery cell 2 from the tray 10. It can also be used for heat dissipation of the battery cell 2, which helps to improve the heat dissipation effect of the battery cell 2.

[0183] In some embodiments, the base plate 110 is provided with a plurality of third through holes, which are respectively connected to the first groove 2214a and the second groove 2224a, so that the lifting mechanism of the lifting battery cell 2 can sequentially pass through the third through hole, the first groove 2214a or the second groove 2224a to abut against the battery cell 2.

[0184] 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.

[0185] 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.

[0186] Referring to Figure 14, which is a three-dimensional structural schematic diagram of a tray provided in some other embodiments of this application.

[0187] 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.

[0188] Referring to Figures 1 to 9, some embodiments of this application provide a tray 10 for carrying a battery cell 2. The tray 10 includes a tray body 100 and multiple rows of bladder assemblies 200. The multiple rows of bladder assemblies 200 are disposed on the tray body 100. Each row of bladder assemblies 200 includes multiple bladder assemblies 200 arranged at intervals along a first direction X. The space between two adjacent bladder assemblies 200 is used to place the battery cell 2. The multiple rows of bladder assemblies 200 are arranged along a second direction Y.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] In some embodiments, the first subframe 221 has a first snap-fit ​​portion 221a, and the second subframe 222 has a second snap-fit ​​portion 222a. The first snap-fit ​​portion 221a and the second snap-fit ​​portion 222a cooperate with each other to connect the first subframe 221 and the second subframe 222.

[0193] 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.

[0194] 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. 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0201] 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 tray for supporting individual battery cells, wherein, The tray includes: Tray body; At least one row of capsule components is disposed on the tray body, each row of capsule components includes a plurality of capsule components arranged at intervals along a first direction, and the space between two adjacent capsule components is used to place the battery cell.

2. The pallet 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 tray 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 tray 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 pallet 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 pallet according to any one of claims 3-5, wherein, The first subframe has a first snap-fit ​​portion, and the second subframe has a second snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion cooperate with each other to connect the first subframe and the second subframe.

7. The pallet according to any one of claims 3-6, 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.

8. The tray according to any one of claims 3-7, 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.

9. The tray according to claim 8, wherein, The first support protrusion is provided with a first groove, and the first groove passes through the first support protrusion along the direction of gravity; The second support protrusion is provided with a second groove, which penetrates the second support protrusion along the direction of gravity.

10. The tray according to any one of claims 3-9, wherein, The first subframe is provided with a second limiting protrusion and a third limiting protrusion on the side opposite to 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 direction of gravity are perpendicular to each other.

11. The tray according to claim 10, 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.

12. The pallet according to any one of claims 3-11, wherein, The second subframe is provided with a fourth limiting protrusion and a fifth limiting protrusion on the side opposite to the first subframe. Along the second direction, the second opening is located between the fourth limiting protrusion and the fifth limiting protrusion. The fourth limiting protrusion and the fifth limiting protrusion are used to limit the battery cell in the second direction. The first direction, the second direction, and the direction of gravity are perpendicular to each other.

13. The pallet according to any one of claims 2-12, 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.

14. The tray according to claim 13, wherein, Along the first direction, the thickness of the first frame is greater than the thickness of the first membrane, and the thickness of the second frame is greater than the thickness of the second membrane.

15. The pallet according to claim 13, wherein, The capsule further includes a first connector, which is annular and sandwiched between the first frame and the second frame.

16. The pallet according to claim 15, 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.

17. The tray according to claim 16, wherein, A third groove is provided on the side of the first frame facing the second frame, and a fourth groove is provided on the side of the second frame facing the first frame. The third groove and the fourth groove together form a first through hole communicating with the accommodating cavity, and one end of the valve is inserted into the first through hole.

18. The tray according to claim 16, wherein, The first connector has a second through hole for connecting the valve.

19. The tray according to any one of claims 16-18, wherein, The tray also includes a 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.

20. The pallet according to any one of claims 1-19, 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.

21. The pallet according to claim 20, 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.

22. The pallet according to claim 21, wherein, The capsule assembly includes a frame, the frame including a main body and a sixth limiting protrusion, the sixth limiting protrusion protruding from the main body in a second direction and spaced from the main body, the side plate having a second limiting groove on the side facing the capsule assembly, and the sixth limiting protrusion being received in the second limiting groove.

23. The pallet according to any one of claims 20-22, wherein, The base plate has a third through hole, which penetrates the base plate along the direction of gravity.

24. The pallet according to any one of claims 1-23, 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.

Images