Restraint tray, and formation apparatus and control method therefor

Abstract

A restraint tray, wherein a carrier frame (10) comprises a bottom plate (11), and a first end plate (12) and a second end plate (13) which are located at two ends of the bottom plate (11) in a first direction; the bottom plate (11) is configured to be an injection-molded part; a partition plate assembly (20) is provided between the first end plate (11) and the second end plate (12), the partition plate assembly (20) comprising a plurality of partition plates (21); and a push plate assembly (30) is movably provided on the carrier frame (10) and is adapted to push against the partition plate assembly (20) at the side of the first end plate (12) and / or the side of the second end plate (13).

Description

Restraint tray, formation equipment and control method

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410931250.0, filed on July 11, 2024, entitled “Restraint Tray, Formation Device and Control Method”. Technical Field

[0003] This application relates to the field of battery manufacturing technology, and in particular to a restraint tray, formation equipment, and control method. Background Technology

[0004] In related technologies, batteries are widely used in the new energy field, such as battery packs for electric vehicles and battery cells in energy storage systems. The battery production process includes a formation step, which refers to the chemical and electrochemical reaction process in which the green plates are charged in the electrolyte to a charged state, impurities are removed, and the electrochemical activity of the active materials is improved. During the formation step, a restraint tray is used to restrain the battery cells, which has a beneficial effect on the venting of the battery cells.

[0005] However, existing restraint pallets have a complex structure and are heavy, placing a heavy burden on the logistics system. On the one hand, this increases the energy consumption of the logistics system, and on the other hand, it is not conducive to daily maintenance and poses safety hazards. Summary of the Invention

[0006] This application aims to address at least one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a restraint pallet that has a simple structure, is lightweight, reduces the difficulty of transportation, facilitates daily maintenance, and has low safety risks.

[0007] This application further proposes a formation device employing the aforementioned restraint tray.

[0008] This application also proposes a control method for a formation device.

[0009] This application provides a restraint tray, including: a bracket, a partition assembly, and a pusher assembly. The bracket includes: a base plate and a first end plate and a second end plate located at both ends of the base plate in a first direction. The base plate is constructed as an injection molded part. The partition assembly is disposed between the first end plate and the second end plate. The partition assembly includes a plurality of partitions, which are arranged sequentially in the first direction, and adjacent partitions define a receiving space for accommodating battery cells. The pusher assembly is movably disposed on the bracket and is adapted to push against the partition assembly on one side of the first end plate and / or one side of the second end plate.

[0010] According to the embodiments of this application, by selecting an injection-molded base plate, the total weight of the restraint pallet can be reduced, the structure of the restraint pallet can be simplified, thereby reducing the burden of the restraint pallet on the chemical forming logistics system, reducing the energy consumption of the chemical forming logistics system, and reducing processing costs. On the other hand, the material cost of the restraint pallet itself can be reduced, the maintenance convenience of the restraint pallet can be improved, and the safety hazards of the restraint pallet can be reduced.

[0011] According to some embodiments of this application, a structural insert is provided in the base plate, and multiple embedding holes are provided in the base plate. The embedding holes extend along a first direction, and the multiple embedding holes are spaced apart in a second direction perpendicular to the first direction. Each embedding hole is provided with a structural insert.

[0012] According to some embodiments of this application, the base plate is provided with positioning holes at both ends in the first direction, and a foolproof hole is provided at one end.

[0013] According to some embodiments of this application, the base plate is provided with power-taking clearance holes on both sides in the second direction, and the power-taking clearance holes are used to avoid the power-taking block.

[0014] According to some embodiments of this application, the base plate includes a plurality of power outlets provided with corresponding partition components. The plurality of power outlets are arranged sequentially along a first direction. Each power outlet corresponds to an accommodating space, and each row of power outlets includes a first elongated hole and a second elongated hole. The lengths of the first elongated hole and the second elongated hole are different in the first direction.

[0015] According to some embodiments of this application, the base plate is provided with mounting holes at both ends in a first direction, and the first end plate and the second end plate are provided with assembly parts that mate with the mounting holes.

[0016] According to some embodiments of this application, the partition includes: a middle partition and an end partition, a first end plate is connected to an end partition, and a push plate assembly is disposed between a second end plate and another end partition.

[0017] According to some embodiments of this application, the partition assembly further includes: a connecting rod, a connecting boss is provided on the first end plate, one end of the connecting rod is connected to the connecting boss, and the other end of the connecting rod is connected to the second end plate.

[0018] According to some embodiments of this application, at least one pad is provided between the first end plate and the end partition, and the multiple pads have the same or different thicknesses so that the distance between the end partition and the first end plate is adjustable.

[0019] According to some embodiments of this application, the pad includes a first plate segment, a second plate segment, and a third plate segment connected sequentially along a third direction. The third direction is orthogonal to the first direction and is the assembly direction of the battery cell. The dimensions of the first plate segment, the second plate segment, and the third plate segment decrease sequentially in the second direction to define a first step and a second step, respectively. Slots are formed on the first step and the second step, and the connector between the end partition and the first end plate is adapted to be inserted into the slot.

[0020] According to some embodiments of this application, the push plate assembly includes a push plate and a push rod. The push plate is connected to an end partition, and the push rod passes through a second end plate and is connected to the push plate, and is adapted to push the push plate to press against the battery cell.

[0021] According to some embodiments of this application, a push plate is provided with push points, a push rod is connected to the push points, the push rods are arranged in groups, the push points define multiple push point groups, the multiple push point groups are arranged sequentially in a third direction, and the connection lengths between the push points in the multiple push point groups are different.

[0022] According to some embodiments of this application, the restraint tray further includes: an adjustment component, which is adapted to adjust the center distance between the cells in adjacent accommodating spaces. The adjustment component is constructed as a screw and nut transmission component, with the nut connected to the second end plate, the screw threadedly engaged with the nut, and connected to the push plate.

[0023] According to some embodiments of this application, a first magnetic element is provided at one end of the lead screw connected to the push plate, and a second magnetic element is provided on the push plate to magnetically engage with the first magnetic element to limit the push plate.

[0024] According to some embodiments of this application, the push plate is provided with an elongated mounting portion, which has at least two mounting positions. The second magnetic element is adapted to be installed in any of the mounting positions to adjust the pushing position of the lead screw.

[0025] According to some embodiments of this application, a limiting step is also provided at one end of the lead screw that is magnetically engaged with the push plate. The limiting step is suitable for pushing the nut when the lead screw moves to its limit position.

[0026] According to some embodiments of this application, a mounting platform is provided on the second end plate, and a nut mounting block is provided on the mounting platform. The nut mounting block is adapted to be connected to a nut, and the mounting platform is constructed as an elongated oval platform so that the position of the nut mounting block is adjustable on the mounting platform.

[0027] According to some embodiments of this application, a third magnetic element is also provided on the mounting platform, which is adapted to magnetically engage with the push plate.

[0028] According to some embodiments of this application, a plurality of partition assemblies are provided above the base plate, and the plurality of partition assemblies are arranged sequentially in the second direction.

[0029] According to some embodiments of this application, the partition includes a plate body and a first claw and a second claw located on both sides of the plate body. The first claw includes a first plate portion and a first claw portion, one end of the first plate portion is connected to the plate body, and the first claw portion is located at the other end of the first plate portion. The second claw includes a second plate portion and a second claw portion, one end of the second plate portion is connected to the plate body, and the second claw portion is located at the other end of the second plate portion. The first plate portion and the second plate portion are disposed opposite to each other in a second direction perpendicular to the first direction. The first claw portion extends toward the receiving space along the second direction, and the second claw portion extends away from the receiving space along the second direction, so that the partition assembly is adapted to switch between a pressing position and a releasing position, and in the releasing position, the first claw and the second claw abut against each other.

[0030] According to some embodiments of this application, the partition includes: a middle partition and an end partition. The middle partition is provided with a first claw and a second claw on both sides in a first direction, one end partition is provided with a first claw, and the other end partition is provided with a second claw.

[0031] According to some embodiments of this application, the first claw and the second claw are both disposed at both ends of the plate body in the second direction.

[0032] According to some embodiments of this application, the partition assembly further includes: a connecting rod extending along a first direction, and multiple partitions being slidably disposed on the connecting rod, with both ends of the connecting rod connected to a first end plate and a second end plate, respectively.

[0033] According to some embodiments of this application, the battery cell is assembled to the partition along a third direction orthogonal to both the first and second directions, and a connecting part is provided at one end of the partition body located in the third direction, and the connecting part is connected to the connecting rod.

[0034] According to some embodiments of this application, the connecting part is constructed as a hook.

[0035] According to some embodiments of this application, a limiting buckle is also provided on the side wall of the plate body in the second direction. The limiting buckle and the connecting part are opposite to each other in the third direction and are adapted to cooperate with the connecting rod to realize the anti-detachment limiting of the partition.

[0036] According to some embodiments of this application, a support platform is provided at one end of the board body in the third direction, and the support platform is suitable for carrying the battery cell.

[0037] According to some embodiments of this application, a clearance portion is provided on the support platform, and the clearance portions of adjacent partitions are joined to form a clearance through hole, which is suitable for clearance of the lifting rod used to lift the battery cell.

[0038] According to some embodiments of this application, a limiting part is provided on one side of the board body in the first direction, and the limiting part is used to limit the battery cell.

[0039] According to some embodiments of this application, buffer portions are provided on both sides of the plate body in the first direction.

[0040] According to some embodiments of this application, the buffer portion includes: a buffer pad and at least one covering layer, the covering layer covering the buffer pad, the buffer pad being constructed of silicone material, and the covering layer being constructed of polyester film.

[0041] According to some embodiments of this application, the fixing surface of the plate body for fixing the buffer part is constructed as a concave surface, and a first mounting part arranged in an array is provided thereon, and the buffer part has a second mounting part that fits the first mounting part concave and convex.

[0042] According to some embodiments of this application, the partition assembly, pusher assembly, and bracket are all provided with multiple weight-reducing parts.

[0043] This application provides a formation device, including: the restraint tray in the above embodiments.

[0044] This application provides a control method for a chemical formation device, including:

[0045] The separator assembly is in the released position, and the battery cells are placed in multiple accommodating spaces respectively;

[0046] The push rod pushes the push plate assembly to move the separator assembly to the pressing position, and the cell is subjected to pressure that reaches the pressure threshold.

[0047] Obtain the spacing between adjacent partitions;

[0048] If the interval distance is less than the distance threshold, an overtravel alarm will be triggered, and the operation will be stopped.

[0049] If the interval threshold is greater than or equal to the distance threshold, the adjustment component is adjusted to match the center distance between adjacent cells with the probe position of the formation equipment;

[0050] The restraint tray is transferred to the formation location for formation.

[0051] According to some embodiments of this application, the control method further includes:

[0052] After the formation is complete, the push rod pulls the push plate assembly, causing the partition assembly to move to the release position;

[0053] Adjust the adjustment components so that the limit step contacts the second end plate;

[0054] The battery cell is removed by activating the battery take-up block and lifting rod.

[0055] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0056] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0057] Figure 1 is a schematic diagram of the engagement of a restraint tray and a battery cell according to an embodiment of this application;

[0058] Figure 2 is another schematic diagram of the engagement between the restraint tray and the battery cell according to an embodiment of this application;

[0059] Figure 3 is a schematic diagram of the base plate at one angle according to an embodiment of this application;

[0060] Figure 4 is a schematic diagram of the base plate from another angle according to an embodiment of this application;

[0061] Figure 5 is a schematic diagram of the first end plate according to an embodiment of this application;

[0062] Figure 6 is a schematic diagram of the first end plate and the pad according to an embodiment of this application;

[0063] Figure 7 is a schematic diagram of an angle of the intermediate partition according to an embodiment of this application;

[0064] Figure 8 is a schematic diagram of the intermediate partition from another angle according to an embodiment of this application;

[0065] Figure 9 is a schematic diagram of a cushioning pad according to an embodiment of this application;

[0066] Figure 10 is a schematic diagram of the covering layer according to an embodiment of this application;

[0067] Figure 11 is a schematic diagram of an angle of the second end plate according to an embodiment of this application;

[0068] Figure 12 is a schematic diagram of the second end plate from another angle according to an embodiment of this application;

[0069] Figure 13 is a schematic diagram of the adjustment component according to an embodiment of this application;

[0070] Figure 14 is a cross-sectional schematic diagram of the adjustment component according to an embodiment of this application;

[0071] Figure 15 is a schematic diagram of an angle of the end partition and the push plate according to an embodiment of this application;

[0072] Figure 16 is a schematic diagram of the end partition and push plate from another angle according to an embodiment of this application;

[0073] Figure 17 is a schematic diagram showing the disassembled end partition and push plate according to an embodiment of this application;

[0074] Figure 18 is a schematic diagram of a chemical formation apparatus according to an embodiment of this application;

[0075] Figure 19 is a flowchart of a control method for a formation device according to an embodiment of this application. Detailed Implementation

[0076] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0077] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0078] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0079] A battery cell consists of an electrode assembly and an electrolyte. The electrode assembly includes 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 electrode plates. The separator is positioned between the positive and negative electrode plates to insulate them and prevent short circuits.

[0080] The cell also includes a housing and an end cap. The housing has an opening, and the end cap closes to the opening to form a closed space that is isolated from the external space. This closed space is used to house the electrode assembly, electrolyte, and other functional components.

[0081] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0082] The battery manufacturing process includes a formation step, which refers to the chemical and electrochemical reaction process in which green plates are converted into a charged state in the electrolyte through charging, impurities are removed, and the electrochemical activity of their active materials is improved. With the rapid development of the lithium battery industry, the requirements for cell production efficiency are becoming increasingly stringent, while production costs need to be significantly reduced, necessitating lower energy consumption in cell production. Clamping and restraining the cell surface during the formation process has a beneficial effect on cell venting; therefore, restraint formation is widely used in the production process of prismatic lithium-ion cells.

[0083] The applicant found through research that conventional restraint pallets in the prior art are all made of metal. Due to their heavy weight, they place a heavy burden on the logistics system, which on the one hand increases the energy consumption of the chemical logistics system; on the other hand, they are not conducive to daily maintenance by personnel, making it extremely difficult for maintenance personnel to handle them, and resulting in the risk of personnel being injured during the transfer.

[0084] Based on this, this application proposes a restraint pallet, which has a simpler structure, reduces the difficulty of transportation, facilitates daily maintenance, and has low safety risks.

[0085] The restraint tray 100, the formation device 1000, and the control method according to embodiments of this application are described below with reference to Figures 1-19.

[0086] As shown in Figures 1 and 2, this application provides a restraint tray 100, including: a bracket 10, a partition assembly 20, and a pusher assembly 30.

[0087] The bracket 10 is used to support the separator assembly 20 and the pusher assembly 30. The separator assembly 20 is used to accommodate the battery cell 200, and the pusher assembly 30 is used to apply a pushing force to constrain the battery cell 200, thereby constraining its formation. Applying a constraining force to the battery cell 200 suppresses the shell expansion phenomenon during the formation of the battery cell 200. Since the shell no longer expands, the bubbles generated in the shell are relatively easier to expel. The bubbles in the shell will not continue to grow, thus making it less likely to carry out the electrolyte in the shell, reducing electrolyte waste, and improving the electrolyte injection efficiency.

[0088] The bracket 10 includes a base plate 11 and a first end plate 12 and a second end plate 13 located at both ends of the base plate 11 in a first direction. The base plate 11 is constructed as an injection molded part. A partition assembly 20 is disposed between the first end plate 12 and the second end plate 13. The partition assembly 20 includes a plurality of partitions 21, which are arranged sequentially in the first direction, and adjacent partitions 21 define a receiving space for accommodating the battery cell 200. A pusher assembly 30 is movably disposed on the bracket 10 and is adapted to push against the partition assembly 20 on one side of the first end plate 12 and / or the second end plate 13.

[0089] The partition assembly 20 may include multiple partitions 21, such as having 10 partitions 21 or 20 partitions 21. Each adjacent partition 21 can define an accommodating space, and then the battery cell 200 is arranged in the accommodating space. The pusher assembly 30 is movably arranged on the bracket 10 and moves relative to the bracket 10 to press against the battery cell 200, thereby achieving restraint formation.

[0090] The bracket 10 consists of a base plate 11 and a first end plate 12 and a second end plate 13 located at both ends of the base plate 11 in a first direction. The first end plate 12 and the second end plate 13 are detachably fixed to the base plate 11. The partition assembly 20 and the push plate assembly 30 move between the first end plate 12 and the second end plate 13, which can improve the integrity of the restraint tray 100 and reduce the difficulty of transportation. The push plate assembly 30 can be set between the first end plate 12 and the partition assembly 20, or between the second end plate 13 and the partition assembly 20, or both the first end plate 12 and the partition assembly 20 and the second end plate 13 and the partition assembly 20 can be set with the push plate assembly 30.

[0091] The base plate 11 can be constructed as an injection molded part, and can be made of high-strength plastic. Compared with conventional metal base plates, it is lighter. The restraint pallet 100 is even lighter, easier to transport, cheaper to transport, and consumes less energy. In particular, it consumes less energy in the chemical logistics system. At the same time, it is more convenient to operate during daily maintenance, has less motion inertia, and poses less safety hazards.

[0092] According to the embodiments of this application, by selecting the injection-molded base plate 11, the total weight of the restraint pallet 100 can be reduced, the structure of the restraint pallet 100 can be simplified, thereby reducing the burden of the restraint pallet 100 on the chemical forming logistics system, reducing the energy consumption of the chemical forming logistics system, and reducing processing costs. On the other hand, the material cost of the restraint pallet 100 itself can be reduced, the maintenance convenience of the restraint pallet 100 can be improved, and the safety hazards of the restraint pallet 100 can be reduced.

[0093] In this embodiment of the application, the first direction can be the length direction, i.e. the X direction in the figure, the second direction can be the width direction, i.e. the Y direction in the figure, and the third direction can be the height direction or the up-down direction, i.e. the Z direction in the figure.

[0094] As shown in Figure 3, according to some embodiments of this application, a structural insert 111 is provided in the base plate 11, and a plurality of embedding holes are provided on the base plate 11. The embedding holes extend along a first direction, and the plurality of embedding holes are spaced apart in a second direction perpendicular to the first direction. Each embedding hole is provided with a structural insert 111.

[0095] The first direction is the length direction of the base plate 11, and the second direction is the width direction of the base plate 11. Three, four, five or more structural inserts 111 are arranged sequentially in the width direction. Each structural insert 111 is generally constructed as a tubular structure to extend into the embedding hole to achieve structural reinforcement of the base plate 11.

[0096] Therefore, firstly, the setting of the structural insert 111 can improve the structural strength of the base plate 11, enabling the base plate 11 to meet the load-bearing requirements and improve load-bearing stability and reliability. The structural insert 111 can be a steel pipe, a high-strength carbon fiber structural component, etc. Furthermore, by setting an embedding hole and placing the structural insert 111 in the embedding hole, the structural reinforcement of the base plate 11 can be achieved. This not only improves the structural strength of the base plate 11, but also makes the setting position of the structural insert 111 reasonable, reduces processing difficulty, increases assembly efficiency, and improves structural stability.

[0097] Of course, the configuration of the structural insert 111 in this application embodiment is not limited to this. In other embodiments, the embedding hole may include a first hole extending along the first direction and a second hole extending along the second direction. The corresponding structural insert 111 includes a first member and a second member. The first member extending along the first direction and the second member extending along the second direction are respectively disposed in the first hole and the second hole. The embedding hole may also be formed into a grid structure, and the structural insert 111 may be formed into a grid insert.

[0098] Referring to Figure 3, according to some embodiments of this application, the base plate 11 is provided with positioning holes 113 at both ends in the first direction, and a foolproof hole 112 is provided at one end.

[0099] Specifically, the base plate 11 is generally a rectangular plate structure. One end of the base plate 11 in the first direction can be provided with a foolproof hole 112. The foolproof hole 112 is an open square hole. One, two or more holes can be provided on one end of the base plate 11 in the first direction. The positioning hole 113 is used to fix the positioning of the tray 100. A steel pin sleeve can be embedded in it to achieve positioning by insertion.

[0100] Understandably, during use, the restraint tray 100 can be transported via a formation logistics system. For example, after the battery cell 200 is assembled in the accommodating space, the restraint tray 100 and the battery cell 200 are transported to the formation location. After formation is completed, the restraint tray 100 is moved out of the formation location. The formation logistics system can be constructed as a traditional belt drive structure, which can be equipped with a foolproof protrusion structure that mates with the foolproof hole 112 and a positioning pin structure that mates with the positioning hole 113. The restraint tray 100... During the placement of the restraint pallet 100 into the chemical processing logistics system, the anti-misalignment protrusion and anti-misalignment hole 112 can be used to prevent the restraint pallet 100 from being installed upside down, ensuring that the restraint pallet 100 is assembled into the chemical processing logistics system according to the expected direction and angle. The positioning pin and positioning hole 113 can improve the installation accuracy, fixing stability and reliability of the restraint pallet 100 in the chemical processing logistics system, making the movement synchronization between the restraint pallet 100 and the chemical processing logistics system better, resulting in higher production cycle consistency, processing efficiency and processing accuracy.

[0101] As shown in Figures 3 and 4, according to some embodiments of this application, the base plate 11 is provided with power-taking clearance holes 114 on both sides in the second direction, which are used to avoid the power-taking block.

[0102] Specifically, the power-taking block can be a rectangular block, a cylindrical block, or other structures, and the corresponding power-taking clearance hole 114 can be a square hole or a round hole. The power-taking clearance hole 114 is formed on both sides of the bottom plate 11 in the second direction, that is, the power-taking clearance hole 114 is set near the edge of the bottom plate 11 in the width direction.

[0103] In this way, the power-taking block can be avoided by the power-taking avoidance hole 114, making the removal of the battery cell 200 from the restraint tray 100 simpler and more convenient, with a lower probability of interference, higher processing efficiency, and lower processing cost.

[0104] It should be noted that the process of removing the battery cell 200 can be divided into two steps. First, the power-taking block extends out of the power-taking clearance hole 114 to fix the relative position of the power-taking mechanism and the base plate 11. Then, the battery cell 200 is pushed out of the accommodating space by the lifting rod of the power-taking mechanism. That is, in the third direction, the power-taking block extends into the power-taking clearance hole 114 to achieve the positioning of the base plate 11. Then, the lifting rod moves in the third direction to push out the battery cell 200 in the third direction. This can ensure the alignment of the lifting rod and reduce the difficulty of removing the battery cell 200. The third direction can be defined as the assembly direction of the battery cell 200 in this embodiment of the application.

[0105] Referring to Figures 3 and 4, according to some embodiments of this application, the base plate 11 has a plurality of power outlet holes 115 corresponding to the partition assembly 20. The plurality of power outlet holes 115 are arranged sequentially along a first direction. Each power outlet hole 115 corresponds to an accommodating space, and each row of power outlet holes 115 includes a first elongated hole and a second elongated hole. The lengths of the first elongated hole and the second elongated hole are different in the first direction.

[0106] Specifically, there are multiple partitions 21, and adjacent partitions 21 define accommodating spaces. Each accommodating space contains a battery cell 200. The multiple accommodating spaces are spaced apart in a first direction, and corresponding to the multiple power extraction holes 115 in the first direction, each accommodating space and at least one power extraction hole 115 are directly opposite each other in the assembly direction (i.e., the third direction), so that the lifting rod can pass through the power extraction hole 115 and lift the battery cell 200, further reducing the difficulty of removing the battery cell 200, enabling the battery cell 200 to be removed quickly and improving production efficiency.

[0107] Meanwhile, the power extraction hole 115 can be constructed as an elongated oval hole, which has a larger length dimension in the first direction. The larger power extraction hole 115 can reduce the length of the lifting rod extending into the power extraction hole 115, thereby further reducing the difficulty of power extraction. As a result, the partition assembly 20 of this application can be used to accommodate battery cells 200 of different specifications. Since the compression parameters of battery cells 200 of different specifications are different during the formation process, the center distances are different. The power extraction holes 115 of different specifications can correspond to battery cells 200 of different specifications, so that battery cells 200 of different specifications can be taken out through the power extraction holes 115 of different specifications, thereby further reducing the difficulty of removal.

[0108] It should be noted that the partition assembly 20 in this application embodiment can be multiple sets, and multiple sets of partition assemblies 20 are arranged sequentially in the second direction. Multiple partitions 21 in each set are arranged sequentially in the first direction. The power outlet 115 can be set for each set of partition assembly 20. Each set of partition assembly 20 is provided with one or two columns of power outlet 115. In the embodiment where two columns of power outlet 115 are provided, the two columns of power outlet 115 can be located on both sides of the structure of the structural insert 111. For example, if the partition assembly 20 includes two sets and the structural insert 111 is five, then the two columns of power outlet 115 corresponding to the first set of partition assembly 20 are located on both sides of the second structural insert 111, and the two columns of power outlet 115 corresponding to the second set of partition assembly 20 are located on both sides of the fourth structural insert 111.

[0109] Furthermore, as shown in Figures 3 and 4, a reinforcing rib 117 can be provided on the base plate 11, which is constructed as an injection molded part. The reinforcing rib 117 extends along a first direction and / or a second direction to improve the structural strength of the base plate 11. Process holes 118 can also be provided on the base plate 11. The process holes 118 are opened on the upper and lower side surfaces of the base plate 11, and the process holes 118 on the upper side surface are staggered from those on the lower side surface. By providing the process holes 118, the processing of embedded holes can be realized, and the processing difficulty of the base plate 11 can be reduced, the processing accuracy of the base plate 11 can be improved, and the weight of the base plate 11 can be reduced.

[0110] It is understood that the partition assembly 20 of this application embodiment can accommodate battery cells 200 of different sizes. Since the distance between the first end plate 12 and the second end plate 13 is fixed, when accommodating a battery cell 200 with a larger thickness, the number of battery cells 200 and the number of partitions 21 can be relatively small. At this time, the center distance between adjacent battery cells 200 is large. When accommodating a battery cell 200 with a smaller thickness, the number of battery cells 200 and the number of partitions 21 can be relatively large. The first hole and the second hole are specifically provided to ensure that both large and small battery cells can be easily removed.

[0111] As shown in Figures 6 and 12, according to some embodiments of this application, the base plate 11 is provided with mounting holes 116 at both ends in the first direction, and the first end plate 12 and the second end plate 13 are provided with assembly parts 14 that cooperate with the mounting holes 116.

[0112] Specifically, a mounting hole 116 can be provided on the end of the base plate 11 in the first direction, and a metal toothed sleeve can be embedded in the mounting hole 116. It can be provided on the lower end of the first end plate 12 and the second end plate 13. The assembly part 14 can be constructed as a connecting ear protruding from the side of the first end plate 12 facing the partition assembly 20 in the first direction, or as a connecting ear protruding from the side of the second end plate 13 facing the partition assembly 20 in the first direction, or formed on the lower end surface of the first end plate 12 and the second end plate 13. The mounting hole 116 and the assembly part 14 can be connected by a fastener, or the assembly part 14 can be formed as a fastener and threadedly engaged with the metal toothed sleeve in the mounting hole 116.

[0113] This not only improves the connection stability and reliability between the base plate 11 and the first end plate 12, and between the base plate 11 and the second end plate 13, but also makes the disassembly and assembly between the base plate 11 and the first end plate 12, and between the base plate 11 and the second end plate 13 easier, making the maintenance of the restraint tray 100 simpler and more convenient.

[0114] Referring to Figures 2, 6, 15, 16 and 17, according to some embodiments of this application, the partition 21 includes: a middle partition 21a and an end partition 21b, a first end plate 12 is connected to one end partition 21b, and a push plate assembly 30 is disposed between the second end plate 13 and the other end partition 21b.

[0115] Specifically, multiple intermediate partitions 21a are provided between the two end partitions 21b. For example, if there are M intermediate partitions 21a and 2 end partitions 21b, then the accommodating space is M+1, that is, the number of accommodating spaces is the total number of partitions 21 minus 1. The first end plate 12 is connected to one end partition 21b, and a push plate assembly 30 is provided between the other end partition 21b and the second end plate 13. This allows one end of the restraint tray 100 to remain relatively stationary while a restraining force is applied to the other end to restrain the battery cell 200. Applying a restraining force on one side makes adjustment easier, further simplifies the structure of the restraint tray 100, and reduces costs.

[0116] As shown in Figures 2, 6, 10 and 11, according to some embodiments of this application, the partition assembly 20 further includes a connecting rod 22, a connecting boss 121 is provided on the first end plate 12, one end of the connecting rod 22 is connected to the connecting boss 121, and the other end of the connecting rod 22 is connected to the second end plate 13.

[0117] Specifically, the partition assembly 20 includes connecting rods 22. Each partition assembly 20 can be provided with four connecting rods 22. Both ends of the connecting rods 22 are provided with threaded sections. The first end plate 12 is located at one end of the connecting rod 22 and is threadedly fastened to the connecting rod 22. The second end plate 13 is located at the other end of the connecting rod 22 and is threadedly fastened to the connecting rod 22.

[0118] Furthermore, a connecting boss 121 can be provided on the first end plate 12. The number of connecting bosses 121 is the same as the number of connecting rods 22. For example, if there are four connecting rods 22, then four connecting bosses 121 can be provided on the first end plate 12. In embodiments where there are two or more sets of partition assembly 20, the number of connecting rods 22 is eight or more, corresponding to eight or more connecting bosses 121. A countersunk hole can be provided inside the connecting boss 121. The side of the countersunk hole away from the partition 21 is formed as an internal hexagon countersunk hole. The threaded section of the connecting rod 22 can be inserted into the connecting boss 121 and threadedly fastened to the connecting boss 121.

[0119] This allows for a longer connection area between the connecting rod 22 and the first end plate 12, resulting in a longer path for mechanical transmission between the connecting rod 22 and the first end plate 12, thus enhancing the stability and reliability of the connection between them.

[0120] In other words, countersunk screws can be installed on the end face of the first end plate 12. Therefore, the opening on the first end plate 12 needs to have a certain depth. However, the thickness of the end plate is less than the required opening depth. Therefore, a connecting boss 121 is provided so that the opening depth meets the requirements for countersunk screws, thereby improving the fixing stability of the connecting rod 22 and improving the load-bearing capacity of the connecting rod 22.

[0121] It should be noted that the connecting bosses 121 on both sides of the first end plate 12 in the second direction can be constructed as D-shaped bosses, while the internal connecting bosses 121 are formed as circular bosses. This can improve the connection stability and reliability, while making the sides of the first end plate 12 flatter and reducing the probability of interference between the restraint pallet 100 and surrounding components during transportation.

[0122] It should be noted that the first end plate 12 and the second end plate 13 can both be made of metal, such as cast iron, or high-strength plastic. Hollowed-out parts can be provided on the surfaces of the first end plate 12 and the second end plate 13 to reduce weight. Several reinforcing rib structures can be formed on them, and the outer surface can be formed as a plane.

[0123] Furthermore, lifting lug holes 16 can be provided on the upper surface of the first end plate 12 and the second end plate 13 in the third direction. When the restraint pallet 100 is lifted and transferred, lifting lugs can be provided in the lifting lug holes 16. The transfer device can lift the lifting lugs to realize the transfer of the restraint pallet 100, which can further reduce the transportation difficulty of the restraint pallet 100, reduce transportation costs, and improve transportation safety.

[0124] As shown in Figure 6, according to some embodiments of this application, at least one pad 15 is provided between the first end plate 12 and the end partition 21b. The thickness of the multiple pads 15 is the same or different, so that the distance between the end partition 21b and the first end plate 12 is adjustable.

[0125] Specifically, the number of pads 15 can be at least one, such as one, two or more, and they are stacked along the first direction. The thickness of the pads 15 can be the same or different to adjust the distance between the first end plate 12 and the end partition 21b in the stacking direction.

[0126] It is understandable that there are errors in the processing of the battery cell 200, and wear also occurs during the use of the restraint tray 100. When battery cells 200 of different specifications and sizes are processed through the restraint tray 100 of this application, the gap on one side edge may also be different. Correspondingly, based on error elimination, wear elimination, and adaptation to the use of battery cells 200 of different specifications and sizes, the number of pads 15 and the selection of pads 15 of different sizes can be adjusted to achieve end gap adjustment. That is, the pads can achieve size compensation, gap compensation, and wear compensation, thereby improving the stability and reliability of the restraint tray 100.

[0127] For example, the pad 15 includes a first pad 15 and a second pad 15. The thickness of the first pad 15 is 2mm and the thickness of the second pad 15 is 3mm. Only the first pad 15 can be used to achieve a 2mm size adjustment, or only the second pad 15 can be used to achieve a 3mm size adjustment. The first pad 15 and the second pad 15 can be used simultaneously to achieve a 5mm size adjustment. Multiple first pads 15 and multiple second pads 15 can also be used simultaneously, etc. This application does not impose specific limitations.

[0128] Referring to Figures 5 and 6, according to some embodiments of this application, the pad 15 includes a first plate segment 151, a second plate segment 152, and a third plate segment 153 connected sequentially along a third direction. The third direction is orthogonal to the first direction and is the assembly direction of the battery cell 200. The dimensions of the first plate segment 151, the second plate segment 152, and the third plate segment 153 decrease sequentially in the second direction to define a first step 154 ​​and a second step 155, respectively. Slots 156 are formed on the first step 154 ​​and the second step 155, and the connector between the end partition 21b and the first end plate 12 is adapted to be inserted into the slot 156.

[0129] Specifically, the first end plate 12 may be provided with an end partition 21b mounting hole 116, and the end partition 21b is fastened to the first end plate 12 by fasteners. A pad 15 may be provided between the first partition 21b and the end partition 21b, and the number of pads 15 may be adjusted according to the usage requirements.

[0130] Furthermore, the width of the first plate segment 151 is greater than the width of the second plate segment 152, and the width of the second plate segment 152 is greater than the width of the third plate segment 153, so as to define the first step 154 ​​and the second step 155 respectively. Slots 156 extending in the assembly direction can be provided on the first step 154 ​​and the second step 155, such as downward extending slots 156. The positions of the fasteners used to fix the first end plate 12 and the end partition 21b can be correspondingly set with the slots 156, so that the pad 15 can be inserted and removed in the third direction between the first end plate 12 and the end partition 21b, which facilitates the insertion and removal adjustment of the pad, further reduces the adjustment difficulty of the restraint tray 100, improves the ease of use, improves production efficiency, and reduces production costs.

[0131] As shown in Figures 15 and 17, according to some embodiments of this application, the push plate assembly 30 includes a push plate 31 and a push rod (not shown in the figures). The push plate 31 is connected to the end partition 21b, and the push rod passes through the second end plate 13 and is connected to the push plate 31, and is adapted to push the push plate 31 to press against the battery cell 200.

[0132] Specifically, the push rods can be arranged in groups, with each group having two, three or more push rods. The push rods are suitable for pushing against the push plate 31, such as: the push rods are connected to the push plate 31 and are suitable for pushing the push plate 31. The push rods can pass through the second end plate 13 and cooperate with the push plate 31, which can reduce the probability of interference with surrounding components during the movement of the push plate assembly 30 and improve the working stability and reliability of the push plate assembly 30.

[0133] It should be noted that the end partition 21b includes an end partition 21b disposed adjacent to the first end plate 12 and an end partition 21b disposed adjacent to the second end plate 13. The first end plate 12 and the end partition 21b are connected by fasteners. The second end plate 13 is spaced apart from the end cover plate. The push plate 31 is connected to the end partition 21b so that the end partition 21b can move toward or away from the end partition 21b under the action of the push plate 31, thereby driving the multiple partitions 21 to move as a whole, so as to release or press against the battery cell 200.

[0134] Referring to Figures 2, 5, and 17, according to some embodiments of this application, the push plate 31 is provided with a push point 311, the push rod is connected to the push point 311, the push rod is arranged in groups, the push point defines multiple push point groups 312, the multiple push point groups 312 are arranged sequentially in the third direction, and the connection length between the push points 311 in the multiple push point groups 312 is different.

[0135] Specifically, the position where the push rod abuts against the push plate 31 can be defined as the push point 311. Based on the push rods being set in groups, the corresponding push points 311 on the push plate 31 can also be set in groups. The number of push rods in each group can be 2, 3 or more, and the number of push points 311 in each group can also be 2, 3 or more.

[0136] Furthermore, multiple push point groups 312 are arranged sequentially in a third direction. For example, the push point group 312 includes a first point group and a second point group, with the first point group located above and the second point group located below. This results in different connection lengths between the multiple push points 311 within the push point group 312. For example, the connection length of the first point group is 80mm, and the connection length of the second point group is 100mm.

[0137] Therefore, by making the length of the connecting line between the push points 311 in the multiple push point groups 312 different, the width dimension of the corresponding second direction of the different push point groups 312 is different. In the third direction, the multiple push point groups 312 are arranged sequentially so that the positions of the different push point groups 312 in the height direction are different. Thus, the longer push point groups 312 are located at the lower end of the third direction, and the shorter push point groups 312 are located at the upper end of the third direction. This can adapt to large-size battery cells and small-size battery cells respectively, so that the force points of large-size battery cells and small-size battery cells can be roughly located within the height centerline area during the restraint process, thereby improving the restraint effect and the formation effect.

[0138] For example, the push point group 312 includes a first point group and a second point group. The first point group has two push points 311, and the second point group has two push points 311. The line connecting the four push points 311 forms an isosceles trapezoid. The second end plate 13 is provided with a push rod avoidance hole 131, which is used to avoid the push rod, so as to improve the working stability and reliability of the restraint tray 100.

[0139] As shown in Figures 13 and 14, according to some embodiments of this application, the restraint tray 100 further includes an adjustment assembly 40, which is adapted to adjust the center distance between the battery cells 200 in adjacent accommodating spaces. The adjustment assembly 40 is configured as a screw and nut transmission assembly, with the nut 42 connected to the second end plate 13, the screw 41 threadedly engaged with the nut 42, and connected to the push plate 31.

[0140] Specifically, the push rod cooperates with the push plate 31 to apply pressure to the battery cell 200 to reach the pressure threshold. After the push rod stops operating, the position is further adjusted by the adjustment component 40. Specifically, the distance between the lead screw and the nut 42 is increased to push the push plate 31 to move toward or away from the battery cell 200, thereby realizing the adjustment of the center distance between adjacent battery cells 200.

[0141] It should be noted that the pressure applied to the battery cell 200 can be within a range, such as 20N to 30N. The push rod and push plate 31 work together to apply pressure up to 23N or 25N, which is below the pressure limit. This causes the pressure value to change further during the adjustment of the center distance, but it is still within the allowable pressure range. This avoids damage to the battery cell 200 and makes the center distance between adjacent battery cells 200 more reasonable. The alignment effect between the battery cell 200 and the probe is better, resulting in a better formation effect.

[0142] Understandably, a lead screw clearance hole can also be provided on the second end plate 13 to allow the lead screw 41 to move and avoid obstacles during its movement.

[0143] As shown in Figures 14, 15 and 17, according to some embodiments of this application, a first magnetic element 411 is provided at one end of the lead screw 41 connected to the push plate 31, and a second magnetic element 32 is provided on the push plate 31 to magnetically engage with the first magnetic element 411 to limit the push plate 31.

[0144] The pusher plate 31 can push the end partition 21b and realize the sequential force transmission between multiple partitions 21 to restrain the battery cell 200. The movement of the pusher plate 31 is in the first direction. After the restraint action is completed, the force applied to the pusher plate 31 is released, and the pusher plate 31 is in a free state in the first direction. In the subsequent process of removing the battery cell 200, the free state of the pusher plate 31 may affect the removal of the battery cell 200. However, by the attraction of the first magnetic element 411 and the second magnetic element 32, the pusher plate 31 can be limited in the first direction to avoid relative movement of the pusher plate 31 in the first direction. This facilitates the subsequent operations on the restraint tray 100 after formation and improves the ease of use of the restraint tray 100.

[0145] Of course, in this embodiment, the constraint and limiting structure of the push plate 31 is not limited to this. It can also be limited by setting a limiting pin, a cable or other structure on the second end plate 13 when the push plate 31 is in a free state.

[0146] It should be noted that both the first magnetic component 411 and the second magnetic component 32 can be constructed as permanent magnets, or one of them can be a permanent magnet and the other an electromagnet, or both can be electromagnets. The second magnetic component 32 can include a cover and a permanent magnet. The cover is provided with a mounting part, and the permanent magnet is disposed in the mounting part. The cover is connected to the push plate 31.

[0147] Referring to Figures 15 and 17, according to some embodiments of this application, the push plate 31 is provided with an elongated cylindrical mounting portion 313, which has at least two mounting positions 3131. The second magnetic element 32 is adapted to be mounted at any of the mounting positions 3131 to adjust the pushing position of the lead screw 41.

[0148] The push plate 31 has multiple push point groups 312, which allows the push rod to reasonably select the push point 311 based on the size of the battery cell 200 set in the accommodating space. The multiple push point groups 312 are arranged sequentially in the third direction, and a corresponding elongated mounting part 313 can be set in the third direction. Multiple mounting positions 3131 can be formed in the elongated mounting part 313, and the mounting positions 3131 can be set corresponding to the push point groups 312.

[0149] For example, the push position group 312 includes a first position group and a second position group, and the corresponding mounting position 3131 includes a first position and a second position. When the push rod is on the first position group, the corresponding push position of the lead screw 41 can be the first position, and when the push rod is on the second position group, the corresponding push position of the lead screw 41 can be the second position.

[0150] In this way, the pushing position of the lead screw 41 can be switched between multiple mounting positions 3131, and the multiple mounting positions 3131 are set one-to-one with multiple push point groups 312, so that the position of the lead screw 41 is more reasonable. After the push rod makes the restraint force of the cell 200 reach the pressure threshold range, when the center distance of the cell 200 is further adjusted by the lead screw 41, the more reasonable position of the lead screw 41 can improve the response speed of the partition assembly 20, reduce the difficulty of operation, and improve the adjustment accuracy.

[0151] As shown in Figures 13 and 14, according to some embodiments of this application, the end of the lead screw 41 that is magnetically engaged with the push plate 31 is also provided with a limiting step 412, which is suitable for pushing the nut 42 when the lead screw 41 moves to the limit position.

[0152] Specifically, one end of the lead screw 41 can be provided with an internal hexagonal hole for power transmission. For example, an external drive shaft can be inserted into the internal hexagonal hole to drive the lead screw 41 to rotate. The other end is provided with a countersunk hole with a thread inside. The second magnetic component 32 can be provided inside the countersunk hole. A shoulder is provided on the outside of the end where the countersunk hole is located. The limiting step 412 can be limited by a retaining ring, that is, the retaining ring is fixed on the shoulder (for example, the end of the lead screw 41 is fitted with the inner retaining ring and welded to it), forming the limiting step 412. The nut 42 is threadedly engaged with the lead screw 41 and is provided with a flange. A step hole can be provided on the flange, and it can be connected to the second end plate 13 through the step hole so that the lead screw 41 can rotate relative to the nut 42 and push the push plate 31 toward or away from the first end plate 12.

[0153] Therefore, the limiting step 412 can be pushed and engaged with the flange edge of the nut 42 to limit the rotation of the lead screw 41, prevent the lead screw 41 from disengaging from the nut 42, and improve the stability and reliability of the adjusting assembly 40.

[0154] As shown in Figures 11 and 12, according to some embodiments of this application, a mounting platform 132 is provided on the second end plate 13, and a nut mounting block 133 is provided on the mounting platform 132. The nut mounting block 133 is adapted to be connected to the nut 42, and the mounting platform 132 is constructed as an elongated oval platform so that the nut mounting block 133 can be flipped and mounted on the mounting platform 132.

[0155] Specifically, the second end plate 13 and the first end plate 12 can be made of the same material, and the weight can be reduced by opening a hollow part. A stepped hole can be opened on the surface of the second end plate 13 in the first direction. The stepped hole forms a countersunk hole and cooperates with the mounting countersunk platform 132 on the first end plate 12 so that the two ends of the connecting rod 22 are connected to the stepped hole and the mounting countersunk platform 132 respectively, thereby improving the stability and reliability of the restraint tray 100. An assembly part 14 can also be provided on the second end plate 13 for fixing the second end plate 13 to the base plate 11. The assembly part 14 can be formed as a mounting ear or an assembly structure (such as an assembly hole) located on the lower end surface of the second end plate 13. A lifting lug hole 16 can also be provided on the upper surface of the second end plate 13 to facilitate the lifting of the restraint tray 100.

[0156] Furthermore, square clearance holes can be provided at both ends and the middle position of the second end plate 13 in the second direction to avoid the square tubular structure on the formation equipment 1000 used to drive the push rod or guide the push rod. A mounting platform 132 can be provided on the second end plate 13. A nut mounting block 133 can be provided inside the mounting platform 132. The nut mounting block 133 is connected to the nut 42 to fix the adjustment component 40 on the second end plate 13. The mounting platform 132 can be constructed as an elongated oval shape so that the position of the nut mounting block 133 in the mounting platform 132 can be adjusted, such as up and down adjustment or flip adjustment in the third direction, so as to determine the force point of the battery cell 200 according to the size of the battery cell 200, and reasonably adjust the position of the nut mounting block 133 in the mounting platform 132 based on the position of the force point. This makes the position of the adjustment component 40 pushing against the push plate 31 more reasonable, and the adjustment accuracy and adjustment response speed of the adjustment component 40 higher.

[0157] It should be noted that the nut mounting block 133 can be constructed as a waist-shaped column with a flange on its outer periphery. The flange has threaded holes, and one end of the waist-shaped column has a through hole for mounting the nut 42. The position of the nut 42 can be adjusted by flipping the nut mounting block 133.

[0158] As shown in Figure 12, according to some embodiments of this application, a third magnetic element 134 is also provided on the mounting platform 132, which is adapted to magnetically engage with the push plate 31.

[0159] Specifically, the third magnetic component 134 can be constructed as a cylindrical magnetic block with a mounting protrusion on its side. It is fixed to the mounting platform 132 by the mounting protrusion. There can be two second magnetic components 32, which are respectively set on two mounting positions 3131. The first magnetic component 411 on the lead screw 41 of the adjusting assembly 40 can cooperate with one of the second magnetic components 32 to achieve the attraction and limiting of the push plate 31. The third magnetic component 134 is set on the side surface of the second end plate 13 facing the push plate 31 and can cooperate with another second magnetic component 32. By increasing the number of magnetic attraction components and the number of magnetic attraction positions, the reliability and stability of limiting the push plate 31 in the first direction can be improved.

[0160] Referring to Figures 1 and 2, according to some embodiments of this application, a plurality of partition assemblies 20 are provided above the base plate 11, and the plurality of partition assemblies 20 are arranged sequentially in the second direction.

[0161] Among them, multiple sets of partition assemblies 20 means that there can be 2 sets, 3 sets or more of partition assemblies 20. The battery cells 200 contained in each set can be arranged sequentially in the first direction, and the multiple sets of partition assemblies 20 are spaced apart in the second direction, so that multiple battery cells 200 can be arranged in an array in the restraint tray 100, thereby improving the load-bearing capacity of the restraint tray 100 and accommodating more battery cells 200.

[0162] For example, as shown in Figures 1 and 2, the partition assembly 20 can be in two sets, one set of partition assembly 20 in a constrained state and the other set in a released state. Multiple sets of partition assemblies 20 can be arranged sequentially in the second direction. Each set of partition assemblies 20 only needs to be provided with a first end plate 12 and a second end plate 13. The push plate assembly 30 can also realize the sharing of multiple sets of partition assemblies 20, which can simplify the structure of the constraining tray 100 and enable the constraining tray 100 to process more cells 200 at the same time, thereby improving processing efficiency and reducing processing costs.

[0163] It should be noted that the push plate 31 of the push plate assembly 30 can be a small push plate, and the number can be the same as the number of partition assemblies 20. Alternatively, multiple partition assemblies 20 can share a large push plate to achieve synchronous formation. In the embodiment with a small push plate, one restraint tray 100 can simultaneously perform formation processes of multiple different specifications of battery cells 200, which can further improve production efficiency. In the embodiment with a small push plate, notches can be set at the corners of the small push plate to avoid the connecting rod 22. Guide block 33 structures can be further set at the notches. The guide block 33 cooperates with the push rod for guidance. In the embodiment with a large push plate, notches also need to be set at the four corner areas of the large push plate and the area in the middle corresponding to the connecting rod 22 to avoid the connecting rod 22. Guide block 33 structures can also be set at the notches. The guide block 33 can be constructed as a multi-block assembly structure.

[0164] As shown in Figures 7 and 8, the restraint tray 100 according to an embodiment of this application includes: a bracket 10 and a partition assembly 20. The bracket 10 has a first end plate 12 and a second end plate 13 opposite to each other in a first direction. The partition assembly 20 is disposed between the first end plate 12 and the second end plate 13. The partition assembly 20 includes a plurality of partitions 21, which are arranged sequentially in the first direction, and adjacent partitions 21 define a receiving space for accommodating the battery cell 200.

[0165] The partition 21 includes: a plate body 211, a first claw 212 located on one side of the plate body 211 in a first direction, and a second claw 213 located on the other side of the plate body 211 in the first direction. The first claw 212 and the second claw 213 slide in the first direction to make the partition assembly 20 suitable for switching between a pressing position and a releasing position. In the releasing position, the first claw 212 and the second claw 213 abut against each other.

[0166] Specifically, the bracket 10 may include a base plate 11, a first end plate 12, and a second end plate 13. The first end plate 12 and the second end plate 13 are disposed at both ends of the base plate 11 in a first direction, and the partition assembly 20 is disposed between the first end plate 12 and the second end plate 13. Adjacent partitions 21 form an accommodating space, and each accommodating space can be provided with a battery cell 200. The position between adjacent partitions 21 is adjustable so that the partition assembly 20 can switch between a pressing position and a releasing position. In the pressing position, the gap between adjacent partitions 21 is smaller than the size of the battery cell 200 in the first direction to restrain the battery cell 200 and achieve restraint formation. In the releasing position, the gap between adjacent partitions 21 is larger than the size of the battery cell 200 in the first direction to facilitate the installation of the battery cell 200 into the accommodating space and the removal of the battery cell 200 from the accommodating space, thereby improving the ease of use of the restraint tray 100.

[0167] Furthermore, in order to achieve a sliding engagement between adjacent partitions 21 in the first direction, and to limit the engagement between adjacent partitions 21 when the partition assembly 20 is in the release position, this application further provides a first claw 212 and a second claw 213. The first claw 212 and the second claw 213 can slide in the first direction to achieve switching between the pressing position and the release position. In the release position, the first claw 212 and the second claw 213 can abut in the first direction to avoid the phenomenon of disengagement between adjacent partitions 21.

[0168] It is understandable that a push plate assembly 30 can be provided between the first end plate 12 and the partition assembly 20, so that multiple partitions 21 can move under the action of thrust, move in face-to-face contact, and move sequentially to the pressing position. Multiple partitions 21 can also switch to the release position under the action of tension. During the process of switching to the release position, the multiple partitions 21 move sequentially to the release position through the abutting action of the first claw 212 and the second claw 213. That is, the linkage of multiple partitions 21 is realized through the first claw 212 and the second claw 213, without the need for further linkage structures such as connecting rods. This simplifies the structure of the partition assembly 20, reduces costs, and after moving to the release position, the abutting action of the first claw 212 and the second claw 213 can achieve limit, prevent the partitions 21 from disengaging, and improve the stability and reliability of the partition assembly 20.

[0169] According to the restraint tray 100 of this application embodiment, adjacent partitions 21 can switch between pressing and releasing positions through the first claw 212 and the second claw 213. On the one hand, the structure of the partition assembly 20 can be simplified to reduce the cost of the restraint tray 100 and achieve a lightweight design of the restraint tray 100. On the other hand, the interlocking of adjacent partitions 21 in the release position can be achieved, and the smoothness of movement between adjacent partitions 21 can be improved, the probability of jamming can be reduced, the stability and reliability of the partition assembly 20 can be improved, and the user experience of the restraint tray 100 can be improved.

[0170] Referring to Figures 7 and 8, the first claw 212 includes a first plate portion 2121 and a first claw portion 2122. One end of the first plate portion 2121 is connected to the plate body 211, and the first claw portion 2122 is located at the other end of the first plate portion 2121. The second claw 213 includes a second plate portion 2131 and a second claw portion 2132. One end of the second plate portion 2131 is connected to the plate body 211, and the second claw portion 2132 is located at the other end of the second plate portion 2131. The first plate portion 2121 and the second plate portion 2131 are arranged opposite to each other in a second direction perpendicular to the first direction. The first claw portion 2122 extends toward the receiving space along the second direction, and the second claw portion 2132 extends away from the receiving space along the second direction, so that the partition assembly 20 is adapted to switch between a pressing position and a releasing position. In the releasing position, the first claw 212 and the second claw 213 abut against each other.

[0171] Specifically, under the projection of the third direction, both the first claw 212 and the second claw 213 are constructed in an L-shape, with one being a regular L-shape and the other an inverted L-shape, so that the first claw 2122 and the second claw 2132 can achieve abutment and limit in the first direction when in the release position. During the process of switching from the release position to the pressing position, the first plate 2121 and the second plate 2131 are opposite in the second direction, and the adjacent partitions 21 can slide freely to achieve the above-mentioned technical effect.

[0172] Of course, the first plate portion 2121 and the second plate portion 2131 are located at the two ends in the third direction, that is, the upper end and the lower end can also be provided with the limiting plate portion 2142. The limiting plate portion 2142 can realize the limiting in the third direction, thereby reducing the movement of adjacent partitions 21 when they move relative to each other in the first direction, and improving the movement stability and reliability of the partition assembly 20.

[0173] As shown in Figures 2, 7, 8, 15, 16 and 17, the partition 21 includes: a middle partition 21a and an end partition 21b. The middle partition 21a is provided with a first claw 212 and a second claw 213 on both sides in the first direction, one end partition 21b is provided with a first claw 212, and the other end partition 21b is provided with a second claw 213.

[0174] In other words, an accommodating space is defined between adjacent partitions 21, and the end partitions 21b located at the ends can be connected to the first end plate 12 and the second end plate 13, or a push plate assembly 30 can be provided between the first end plate 12 and the end partitions 21b, and between the second end plate 13 and the end partitions 21b. The two end partitions 21b are defined as the first end partition 21b and the second end partition 21b, respectively. The middle partition 21a is located between the first end partition 21b and the second end partition 21b. The first end partition 21b has a first claw 212, which cooperates with the second claw 213 on the middle partition 21a, while the second end partition 21b has a second claw 213, which cooperates with the first claw 212 on the middle partition 21a. This makes the push-pull cooperation structure between multiple partitions 21 in the partition assembly 20 simpler, the position adjustment more difficult, and the adjustment accuracy higher.

[0175] The number of intermediate partitions 21a can be multiple. Based on the different sizes of the battery cells 200, the number of intermediate partitions 21a can be reasonably set. The gap can be adjusted by setting a pad 15 between the first end plate 12 and the end partition 21b, or between the second end plate 13 and the end partition 21b, thereby improving the adaptability of the restraint tray 100 and making it suitable for the formation processing of battery cells 200 of various sizes.

[0176] It is understandable that the first claw 212 and the second claw 213 are both located at the two ends of the plate body 211 in the second direction.

[0177] Specifically, the two sides of the plate body 211 in the first direction are defined as the first side and the second side, respectively. The first side may be provided with a first claw 212, and the corresponding second side may be provided with a second claw 213. The plate body 211 is provided with a first claw 212 and a second claw 213 at both ends in the second direction. That is, the first claws 212 are arranged in pairs and located at both ends of the plate body 211 in the second direction, and the second claws 213 are arranged in pairs and also located at both ends of the plate body 211 in the second direction.

[0178] In this way, the force consistency at both ends of the partition 21, which is movable along the first direction, can be better, thereby reducing the swaying of the partition 21 when it moves along the first direction, reducing the movement bias of the partition 21, improving the movement stability of the partition 21, and thus improving the stability and reliability of the partition assembly 20.

[0179] As shown in Figures 1 and 2, the partition assembly 20 further includes a connecting rod 22, which extends along a first direction, and multiple partitions 21 are slidably disposed on the connecting rod 22. The two ends of the connecting rod 22 are respectively connected to the first end plate 12 and the second end plate 13.

[0180] Specifically, the partition assembly 20 includes connecting rods 22. Each partition assembly 20 may be provided with four connecting rods 22. Both ends of the connecting rods 22 are provided with threaded sections. The first end plate 12 is located at one end of the connecting rod 22 and is threadedly fastened to the connecting rod 22. The second end plate 13 is located at the other end of the connecting rod 22 and is threadedly fastened to the connecting rod 22.

[0181] Thus, the first end plate 12 and the second end plate 13 define a space for placing the partition assembly 20. The distance between the first end plate 12 and the second end plate 13 is fixed, and the number of intermediate partitions 21a can be reasonably set according to the thickness of the battery cell 200 to match the distance between the first end plate 12 and the second end plate 13. The two ends of the connecting rod 22 are fixed to the first end plate 12 and the second end plate 13 respectively. The partition 21 is slidably set on the connecting rod 22, which can reduce the difficulty of adjusting the position of the partition 21 and reduce the difficulty of using the restraint tray 100.

[0182] As shown in Figures 2, 7, 8 and 16, the battery cell 200 is assembled to the partition plate 21 along a third direction that is orthogonal to both the first and second directions. The plate body 211 has a connecting part 2111 at one end in the third direction, and the connecting part 2111 is connected to the connecting rod 22.

[0183] In other words, the connecting part 2111 is located at the upper end of the plate body 211, and the partition 21 can be mounted to the connecting rod 22 at the upper end. The battery cell 200 can be mounted to the accommodating space from the upper end, and the connecting part 2111 can overlap with the connecting rod 22, thereby achieving motion guidance cooperation along the first direction.

[0184] This reduces the difficulty of disassembling the separator 21, thereby reducing the difficulty of adjusting the number of separators 21. Adjusting the number of separators 21 based on the size of the cell 200 is easier and more convenient to use.

[0185] In some embodiments, the connecting portion 2111 is configured as a hook.

[0186] Specifically, the lower side of the lug can have an arc-shaped notch with an angle of 180° or greater, and it can overlap with the connecting rod 22 to facilitate the overlapping assembly of the connecting part 2111 and the connecting rod 22, while also ensuring the connection stability between the connecting part 2111 and the connecting rod 22 and reducing the probability of the connecting part 2111 and the connecting rod 22 disengaging.

[0187] As shown in Figure 8, a limiting buckle 2112 is also provided on the side wall of the plate body 211 in the second direction. The limiting buckle 2112 and the connecting part 2111 are opposite to each other in the third direction and are suitable for cooperating with the connecting rod 22 to realize the anti-detachment limiting of the partition 21.

[0188] Specifically, the limiting buckle 2112 includes a plate body and a buckle body at the end. The plate body is spaced apart from the plate body 211 in the second direction, and one end of the plate body in the third direction is connected to the plate body 211, while the other end is provided with a buckle body, so that the limiting buckle 2112 is elastically connected to the plate body 211. After the connecting part 2111 is connected to the connecting rod 22, the limiting buckle 2112 can push against the connecting rod 22 on the outer peripheral surface of the connecting rod 22 to realize the connection limitation of the connecting rod 22 and the connecting part 2111.

[0189] It is understandable that after the battery cell 200 completes the formation process, it needs to be removed. The assembly direction of the battery cell 200 is the same as the installation direction of the partition 21, both being installed from top to bottom. Correspondingly, the battery cell 200 is removed from bottom to top. However, the connecting part 2111 and the connecting rod 22 are designed as an overlapping structure for easy disassembly. During the removal of the battery cell 200, the partition 21 and the connecting rod 22 may easily become disengaged, increasing the difficulty of removing the battery cell 200. This application, by setting a limiting buckle 2112, can limit the partition 21, thereby reducing the probability that the partition 21 will be pulled out during the removal of the battery cell 200, improving the convenience of removing the battery cell 200, and improving the user experience of the restraint tray 100.

[0190] As shown in Figures 7, 8 and 16, a support platform 2113 is provided at one end of the plate body 211 in the third direction, and the support platform 2113 is suitable for supporting the battery cell 200.

[0191] Specifically, the support platform 2113 is located at the lower end of the plate body 211. The support platform 2113 is generally square in structure so as to support the battery cell 200. The support platform 2113 of each partition 21 includes a first part located on the first side and a second part located on the second side. The first part of one partition 21 and the second part of another partition 21 can be spliced ​​together in the front-back direction (i.e., the first direction) to form a complete platform, which is used to place the battery cell 200.

[0192] In this way, by setting up the support platform 2113, on the one hand, the structural strength of the partition 21 can be improved, and on the other hand, the stability and reliability of the battery cell 200 placed on the partition 21 can be improved.

[0193] It should be noted that the support platform 2113 protrudes from the surface of the plate body 211 in the first and second directions, and the protrusion size is smaller than the protrusion size of the first claw 212 and the second claw 213.

[0194] As shown in Figures 7 and 8, the support platform 2113 is provided with a clearance part 2114. The clearance parts 2114 of adjacent partitions 21 are joined together to form a clearance through hole, which is suitable for clearance of the lifting rod used to lift the battery cell 200.

[0195] In other words, each support platform 2113 includes a first part and a second part. Both the first part and the second part are provided with a clearance part 2114. The clearance part 2114 of the first part on one partition 21 and the clearance part 2114 of the second part on another partition 21 can be combined to form a clearance through hole. The clearance through hole can avoid the lifting rod, thereby avoiding the lifting rod during the removal of the battery cell 200, so as to reduce the difficulty of removing the battery cell 200 from the restraint tray 100.

[0196] Furthermore, at least one of the two clearance portions 2114 that are assembled to form the clearance through hole is configured as a C-shaped hole.

[0197] Specifically, one of the clearance portions 2114 is formed as a C-shaped hole, and the other clearance portion 2114 is also a C-shaped hole, or an arc-shaped hole, etc., so that the first clearance portion 2114 and the second clearance portion 2114 and the blank area between them can be combined to form an elongated hole. The setting of the elongated hole makes it easier for the lifting rod to pass through the clearance portion 2114, which can reduce the probability of interference between the partition 21 and the lifting rod, thereby reducing the difficulty of removing the battery cell 200 and improving the ease of use of the restraint tray 100.

[0198] As shown in Figure 8, a limiting part 214 is provided on one side of the plate body 211 in the first direction. The limiting part 214 is used to limit the battery cell 200.

[0199] Specifically, the battery cell 200 is placed on the support platform 2113, and the plate body 211 is provided with a limiting part 214. The limiting part 214 can be located on the first side or the second side. The limiting parts 214 on the multiple partitions 21 are all located on the first side or all located on the second side. By setting the limiting part 214, the battery cell 200 can be limited, reducing the probability of the battery cell 200 coming out and improving the bearing stability of the battery cell 200.

[0200] It should be noted that when the partition 21 is in the released position, the gap between adjacent partitions 21 is greater than the size of the cell 200 in the first direction. At this time, after the cell 200 is placed in the accommodating space, the cell 200 can be limited by the limiting part 214.

[0201] Referring to Figures 8 and 16, the limiting part 214 includes a connecting plate 2141 and a limiting plate 2142. One end of the connecting plate 2141 is connected to the plate body 211, and the limiting plate 2142 is connected to the other end of the connecting plate 2141 and extends toward the accommodating space to limit the battery cell 200.

[0202] In other words, the projection outline of the limiting part 214 in the third direction is L-shaped, and the plate body 211 can limit the cell 200 in the second direction. The limiting plate 2142 is arranged opposite to the plate body 211 in the first direction, and can limit the cell 200 in the first direction.

[0203] In this way, the battery cell 200 is limited in the second direction and the third direction by the connecting plate 2141 and the limiting plate 2142 respectively, so as to improve the stability and reliability of the battery cell 200 in the accommodating space, improve the formation accuracy, and avoid damage to the battery cell 200 during the pressing process, thereby improving the yield.

[0204] It is understandable that the connecting plate 2141 has a guide ramp 2143 at one end in the third direction.

[0205] In this assembly, the battery cell 200 is assembled into the receiving space from the top. The upper end of the connecting plate 2141 (i.e., the end facing the third direction) is provided with a guide slope 2143. The two connecting plates 2141 facing each other in the second direction define the battery cell 200 inlet hole. The battery cell 200 can be assembled into the receiving space through the battery cell 200 inlet hole. Based on the setting of the guide slope 2143, the battery cell 200 inlet hole can be formed into a flared hole to guide the assembly of the battery cell 200, reduce the assembly difficulty of assembling the battery cell 200 into the receiving space, reduce the assembly difficulty, and improve production efficiency.

[0206] As shown in Figures 7, 16 and 17, buffer portions 215 are provided on both sides of the plate body 211 in the first direction.

[0207] Specifically, the buffer 215 can provide buffer for the battery cell 200 during the restraint process, making the force distribution on the battery cell 200 more uniform, improving the stress concentration during the restraint process, and reducing the probability of damage to the battery cell 200.

[0208] It should be noted that the upper end of the buffer section 215 can be constructed as a slope structure, which can also be used to guide the assembly of the battery cell 200.

[0209] As shown in Figures 9 and 10, the buffer portion 215 includes: a buffer pad 2151 and at least one covering layer 2152, the covering layer 2152 covering the buffer pad 2151, the buffer pad 2151 being constructed of silicone material, and the covering layer 2152 being constructed of polyester film.

[0210] Specifically, the covering layer 2152 can be configured to be symmetrically arranged along the third direction center, and the opening of the covering layer 2152 is located on the third direction centerline, ensuring that there is no difference between front and back installation of the covering layer 2152, which can realize assembly error prevention. The buffer pad 2151 is constructed of silicone material, and the covering layer 2152 is constructed of polyester film, which can protect the buffer pad 2151 and reduce the probability of electrolyte wetting the buffer pad, thereby reducing the probability of the buffer pad 2151 being corroded. Moreover, by using multiple covering layers 2152, the overall size and thickness of the buffer part 215 can be adjusted. That is, when the buffer pad 2151 undergoes plastic deformation, resulting in a reduction in thickness, the size can be adjusted by the number of covering layers 2152. At the same time, based on the material characteristics of the buffer pad 2151, the setting of the covering layer 2152 can also prevent oily substances from acting on the surface of the battery cell 200, thereby improving the processing quality of the battery cell 200.

[0211] It is understandable that the push plate assembly 30 and the adjustment assembly 40 are both adapted to push the end partition 21b on one side of the end partition 21b of the partition assembly 20 to press the battery cell 200, press the battery cell 200 into a restrained state, and then perform formation. During the pressing process, the buffer pad 2151 will deform. Long-term pressing and frequent use will cause the buffer pad 2151 to undergo plastic deformation and wear.

[0212] Furthermore, the fixing surface of the plate body 211 for fixing the buffer part 215 is constructed as a concave surface, and a first mounting part 2115 arranged in an array is provided thereon. The buffer part 215 has a second mounting part 2153 that is in concave-convex fit with the first mounting part 2115.

[0213] Specifically, the concave fixed surface is connected to the buffer part 215, which can achieve better assembly positioning and fixation of the buffer part 215, and improve the fixation stability and reliability of the buffer part 215. The concave-convex fit connection between the first mounting part 2115 and the second mounting part 2153 can reduce the difficulty of disassembling and assembling the buffer part 215, so as to facilitate the replacement of the buffer part 215. At the same time, the first mounting part 2115 and the second mounting part 2153 can be arranged in an array along the second direction and the third direction, which can also improve the fixation stability and reliability of the buffer part 215.

[0214] It should be noted that the plate body 211 is also provided with a square through hole. The square through hole can be used to avoid the limiting plate 2142 of the limiting part 214, so as to avoid interference between the limiting part 214 on one partition 21 and the plate body 211 of the other partition 21 when the pressure position is reached, so as to improve the restraint stability and reliability.

[0215] Referring to Figures 2, 6, 7, 8, and 12, according to some embodiments of this application, the partition assembly 20, the pusher assembly 30, and the bracket 10 are all provided with multiple weight-reducing parts 50.

[0216] Specifically, the weight-reducing part 50 can be constructed as a hollow part, with the periphery of the hollow part forming a structure such as reinforcing ribs and reinforcing plates. The weight-reducing part 50 can also be constructed as an opening, so as to reduce the weight of the restraint pallet 100, reduce the difficulty of transportation, reduce the transportation cost, and improve the safety of transportation.

[0217] It should be noted that the weight reduction part 50 is provided on the partition 21, which can reduce the amount of deformation of the partition 21 during the processing and improve the structural reliability of the partition 21.

[0218] As shown in Figure 18, this application provides a formation device 1000, including: the restraint tray 100 in the above embodiment.

[0219] As shown in Figure 19, this application provides a control method for a chemical formation device 1000, including:

[0220] The separator assembly 20 is in the released position, and the battery cells 200 are placed in multiple accommodating spaces respectively;

[0221] The push rod pushes the push plate assembly 30 so that the separator assembly 20 moves to the pressing position and the cell 200 is subjected to pressure up to the pressure threshold.

[0222] Obtain the spacing between adjacent partitions 21;

[0223] If the interval distance is less than the distance threshold, an overtravel alarm will be triggered, and the operation will be stopped.

[0224] If the interval threshold is greater than or equal to the distance threshold, the adjustment component 40 is adjusted so that the center distance between adjacent cells 200 matches the probe position of the formation device 1000.

[0225] The restraint tray 100 is transferred to the formation position for formation.

[0226] Specifically, during the constraint formation process, the constraint force applied to the battery cell 200 can be set within a pressure range, and the pressure threshold can be any value within that pressure range, not the endpoint of the pressure range. For example, if the pressure range is 20N to 30N, the pressure threshold can be 25N, meaning the pressure threshold is within the range. Then, the push rod first pushes the push plate 31 to adjust the separator assembly 20 to the pressing position. After the pressure on the battery cell 200 equals the pressure threshold, the push rod is held in place under this force, and the distance between the plate bodies 211 of adjacent separators 21 is detected. When the center distance between adjacent cells 200 is less than the distance threshold, it indicates that the cell 200 is over-compressed, which may pose a risk of damage to the cell 200. Therefore, an overtravel alarm is issued and the operation is stopped to improve the safety of the formation process and avoid damage to the cell 200. When the distance between adjacent cells 200 is greater than or equal to the distance threshold, the adjustment component 40 is further adjusted to match the center distance between the cells 200 with the position of the probe of the formation equipment 1000 to improve the formation effect and accuracy. During the process of the adjustment component 40 further adjusting the position of the push plate 31, the pressure can also be within the pressure range.

[0227] As shown in Figure 19, the control method further includes:

[0228] After the formation is complete, the push rod pulls the push plate assembly 30 to move the partition assembly 20 to the release position;

[0229] Adjust the adjustment component 40 so that the limiting step 412 contacts the second end plate 13;

[0230] The battery pack and lifting rod are activated to remove battery cell 200.

[0231] In other words, when the restraint tray 100 is in the released position, the battery cell 200 is placed inside the restraint tray 100, and then the push plate assembly 30 and the adjustment assembly 40 are used to make the partition assembly 20 in the pressing position, and then formation is performed. After formation is completed, the partition assembly 20 is switched to the released position, and the adjustment assembly 40 is reset. Then, power is taken out through the power taking block, lifting rod, etc., so as to reduce the formation difficulty, improve the formation efficiency, improve the production efficiency of the battery cell 200, and reduce the production cost.

[0232] Other configurations and operations of the restraint tray 100 and the formation device 1000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0233] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0234] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A restraint tray, wherein, include: The bracket (10) includes: a base plate (11) and a first end plate (12) and a second end plate (13) located at both ends of the base plate (11) in a first direction, wherein the base plate (11) is constructed as an injection molded part; A separator assembly (20) is disposed between the first end plate (12) and the second end plate (13). The separator assembly (20) includes a plurality of separators (21), which are arranged sequentially in the first direction, and adjacent separators (21) define a accommodating space for accommodating the battery cell. A push plate assembly (30) is movably disposed on the bracket (10) and adapted to push against the partition assembly (20) on the side of the first end plate (12) and / or the side of the second end plate (13).

2. The restraint tray according to claim 1, wherein, The base plate (11) is provided with a structural insert (111), and the base plate (11) is provided with a plurality of insert holes. The insert holes extend along a first direction and are spaced apart in a second direction perpendicular to the first direction. Each insert hole is provided with a structural insert (111).

3. The restraint tray according to claim 1 or 2, wherein, The base plate (11) has positioning holes (113) at both ends in the first direction, and a foolproof hole (112) at one end.

4. The restraint tray according to any one of claims 1-3, wherein, The base plate (11) is provided with power-taking avoidance holes (114) on both sides in the second direction. The power-taking avoidance holes (114) are used to avoid the power-taking block.

5. The restraint tray according to any one of claims 1-4, wherein, The base plate (11) includes a plurality of power extraction holes (115) corresponding to the partition assembly (20). The plurality of power extraction holes (115) are arranged sequentially along a first direction. Each power extraction hole (115) corresponds to a receiving space. Each row of power extraction holes (115) includes a first elongated hole and a second elongated hole. The lengths of the first elongated hole and the second elongated hole are different in the first direction.

6. The restraint tray according to any one of claims 1-5, wherein, The base plate (11) has mounting holes (116) at both ends in the first direction, and the first end plate (12) and the second end plate (13) have assembly parts (14) that cooperate with the mounting holes (116).

7. The restraint tray according to any one of claims 1-6, wherein, The partition (21) includes: a middle partition (21a) and an end partition (21b), wherein the first end plate (12) is connected to one of the end partitions (21b), and the push plate assembly (30) is disposed between the second end plate (13) and the other end partition (21b).

8. The restraint tray according to claim 7, wherein, The partition assembly (20) further includes a connecting rod (22), a connecting boss (121) is provided on the first end plate (12), one end of the connecting rod (22) is connected to the connecting boss (121), and the other end of the connecting rod (22) is connected to the second end plate (13).

9. The restraint tray according to claim 7, wherein, At least one pad (15) is provided between the first end plate (12) and the end partition (21b). The multiple pads (15) have the same or different thicknesses so that the distance between the end partition (21b) and the first end plate (12) is adjustable.

10. The restraint tray according to claim 9, wherein, The pad (15) includes a first plate segment (151), a second plate segment (152), and a third plate segment (153) connected sequentially along a third direction. The third direction is orthogonal to the first direction and is the assembly direction of the battery cell. The dimensions of the first plate segment (151), the second plate segment (152), and the third plate segment (153) decrease sequentially in the second direction to define a first step (154) and a second step (155), respectively. Slots (156) are formed on the first step (154) and the second step (155), and the connector between the end partition (21b) and the first end plate (12) is adapted to be inserted into the slot (156).

11. The restraint tray according to any one of claims 1-10, wherein, The push plate assembly (30) includes a push plate (31) and a push rod. The push plate (31) is connected to the end partition (21b). The push rod passes through the second end plate (13) and is connected to the push plate (31), and is adapted to push the push plate (31) to press against the battery cell.

12. The restraint tray according to claim 11, wherein, The push plate (31) is provided with a push point (311), the push rod is connected to the push point (311), the push rod is arranged in groups, the push point defines multiple push point groups (312), the multiple push point groups (312) are arranged sequentially in a third direction, and the connection length between the push points (311) in the multiple push point groups (312) is different.

13. The restraint tray according to claim 11 or 12, wherein, The restraint tray further includes an adjustment component (40), which is adapted to adjust the center distance between the cells in adjacent accommodating spaces. The adjustment component (40) is configured as a lead screw (41) and nut (42) transmission assembly. The nut (42) is connected to the second end plate (13), the lead screw (41) is threadedly engaged with the nut (42), and is connected to the push plate (31).

14. The restraint tray according to claim 13, wherein, The lead screw (41) is connected to the push plate (31) at one end with a first magnetic element (411), and the push plate (31) is provided with a second magnetic element (32) that magnetically engages with the first magnetic element (411) to limit the push plate (31).

15. The restraint tray according to claim 14, wherein, The push plate (31) is provided with an elongated cylindrical mounting part (313), which has at least two mounting positions (3131). The second magnetic component (32) is adapted to be installed in any of the mounting positions (3131) to adjust the pushing position of the lead screw (41).

16. The restraint tray according to claim 15, wherein, The end of the lead screw (41) that is magnetically attracted to the push plate (31) is also provided with a limiting step (412), which is suitable for pushing the nut (42) when the lead screw (41) moves to the limit position.

17. The restraint tray according to any one of claims 13-16, wherein, The second end plate (13) is provided with a mounting platform (132), and a nut mounting block (133) is provided on the mounting platform (132). The nut mounting block (133) is adapted to be connected to the nut (42), and the mounting platform (132) is constructed as an elongated oval platform so that the nut mounting block (133) is adjustablely positioned on the mounting platform (132).

18. The restraint tray according to claim 17, wherein, The mounting platform (132) is also provided with a third magnetic component (134), which is adapted to magnetically engage with the push plate (31).

19. The restraint tray according to any one of claims 1-18, wherein, Multiple sets of partition assemblies (20) are arranged above the base plate (11), and the multiple sets of partition assemblies (20) are arranged sequentially in the second direction.

20. The restraint tray according to any one of claims 1-19, wherein, The partition (21) includes a plate body (211) and a first claw (212) and a second claw (213) located on both sides of the plate body (211). The first claw (212) includes a first plate portion (2121) and a first claw portion (2122). One end of the first plate portion (2121) is connected to the plate body (211), and the first claw portion (2122) is located at the other end of the first plate portion (2121). The second claw (213) includes a second plate portion (2131) and a second claw portion (2132). One end of the second plate portion (2131) is connected to the plate body. (211) are connected, the second claw (2132) is located at the other end of the second plate (2131), the first plate (2121) and the second plate (2131) are disposed opposite each other in a second direction perpendicular to the first direction, the first claw (2122) extends toward the receiving space in the second direction, and the second claw (2132) extends away from the receiving space in the second direction, so that the partition assembly (20) is adapted to switch between a pressing position and a releasing position, and in the releasing position, the first claw (212) abuts against the second claw (213).

21. The restraint tray according to claim 20, wherein, The partition (21) includes: a middle partition (21a) and an end partition (21b). The middle partition (21a) is provided with a first claw (212) and a second claw (213) on both sides of the first direction. One end partition (21b) is provided with a first claw (212) and the other end partition (21b) is provided with a second claw (213).

22. Within the restraint tray according to claim 20 or 21, wherein, The first claw (212) and the second claw (213) are both located at both ends of the plate body (211) in the second direction.

23. The restraint tray according to any one of claims 20-22, wherein, The partition assembly (20) further includes a connecting rod (22) extending along the first direction, and the plurality of partitions (21) are slidably disposed on the connecting rod (22), and the two ends of the connecting rod (22) are respectively connected to the first end plate (12) and the second end plate (13).

24. The restraint tray according to claim 23, wherein, The battery cell is assembled to the partition (21) along a third direction orthogonal to both the first and second directions. The plate body (211) is provided with a connecting part (2111) at one end of the third direction, and the connecting part (2111) is connected to the connecting rod (22).

25. The restraint tray according to claim 24, wherein, The connecting part (2111) is configured as a hook.

26. The restraint tray according to claim 24 or 25, wherein, The plate body (211) is also provided with a limiting buckle (2112) on the side wall in the second direction. The limiting buckle (2112) and the connecting part (2111) are opposite to each other in the third direction and are adapted to cooperate with the connecting rod (22) to realize the anti-detachment limiting of the partition (21).

27. The restraint tray according to any one of claims 24-26, wherein, The plate body (211) is provided with a support platform (2113) at one end in the third direction, and the support platform (2113) is adapted to support the battery cell.

28. The restraint tray according to claim 27, wherein, The support platform (2113) is provided with a clearance part (2114), and the clearance parts (2114) of the adjacent partitions (21) are joined to form a clearance through hole, which is suitable for clearance of the lifting rod used to lift the battery cell.

29. The restraint tray according to claim 24, wherein, The plate body (211) is provided with a limiting part (214) on one side in the first direction, and the limiting part (214) is used to limit the battery cell.

30. The restraint tray according to any one of claims 20-29, wherein, The plate body (211) is provided with buffer portions (215) on both sides in the first direction.

31. The restraint tray according to claim 30, wherein, The buffer portion (215) includes: a buffer pad (2151) and at least one covering layer (2152), the covering layer (2152) covering the buffer pad (2151), the buffer pad (2151) being constructed of silicone material, and the covering layer (2152) being constructed of polyester film.

32. The restraint tray according to claim 30 or 31, wherein, The plate body (211) has a concave surface for fixing the buffer part (215), and a first mounting part (2115) arranged in an array is provided thereon. The buffer part (215) has a second mounting part (2153) that is in concave-convex fit with the first mounting part (2115).

33. The restraint tray according to any one of claims 1-32, wherein, The partition assembly (20), the pusher assembly (30), and the bracket (10) are all provided with multiple weight-reducing parts (50).

34. A chemical formation apparatus (1000), wherein, include: The restraint tray according to any one of claims 1-33.

35. A control method for a chemical formation device (1000), wherein, include: The separator assembly (20) is in the released position, and the battery cells are placed in multiple accommodating spaces respectively; The push rod pushes the push plate (31) to move the separator assembly (20) to the pressing position, and the cell is subjected to pressure that reaches the pressure threshold. Obtain the spacing between adjacent partitions (21); If the interval distance is less than the distance threshold, an overtravel alarm will be triggered, and the operation will be stopped. If the interval threshold is greater than or equal to the distance threshold, the adjustment component (40) is adjusted so that the center distance between adjacent cells matches the probe position of the formation device (1000); The restraint tray is transferred to the formation location for formation.

36. The control method according to claim 35, wherein, Also includes: After the formation is completed, the push rod pulls the push plate assembly (30) to move the partition assembly (20) to the release position; Adjust the adjustment component (40) so that the limiting step (412) contacts the second end plate (13); The battery cell is removed by activating the battery take-up block and lifting rod.

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