Restraint tray and formation device

Abstract

A restraint tray, a partition plate assembly (20) being provided between a first end plate (12) and a second end plate (13), a plurality of partition plates (21) being sequentially provided in a first direction, and accommodating spaces for accommodating battery cells (200) being defined between adjacent partition plates (21); first clamping jaws (212) and second clamping jaws (213) are in slidable fit in the first direction, such that the partition plate assembly (20) is adapted to switch between a pressing position and a release position, wherein, at the release position, the first clamping jaws (212) abut against the second clamping jaws (213).

Description

Restraint trays and chemical conversion equipment

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202421642643.1, filed on July 11, 2024, entitled “Restraint Tray and Formation Device”. Technical Field

[0003] This application relates to the field of battery technology, and in particular to a battery cell, battery device, and electrical equipment. 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, the existing restraint trays have a relatively complex structure, especially the connection structure between adjacent partitions, which is also complex and costly. Summary of the Invention

[0006] This application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this application is to provide a restraint tray that has a simple structure and low cost.

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

[0008] This application provides a restraint tray, including: a bracket and a partition assembly. The bracket has a first end plate and a second end plate opposite each other in a first direction. 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 sequentially arranged in the first direction, and adjacent partitions define a receiving space for accommodating battery cells. Each partition includes: a plate body, a first claw located on one side of the plate body in the first direction, and a second claw located on the other side of the plate body in the first direction. The first claw and the second claw are slidably engaged in the first direction to adapt the partition assembly to switch between a pressing position and a releasing position. In the releasing position, the first claw and the second claw abut against each other.

[0009] According to the restraint tray of the present application embodiment, adjacent partitions can switch between pressing and releasing positions through the first and second claws. On the one hand, the structure of the partition assembly can be simplified to reduce the cost of the restraint tray and achieve a lightweight design of the restraint tray. On the other hand, the interlocking of adjacent partitions in the releasing position can be achieved, and the smoothness of movement between adjacent partitions can be improved, reducing the probability of jamming. This can improve the stability and reliability of the partition assembly and enhance the user experience of the restraint tray.

[0010] According to some embodiments of this application, 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] According to some embodiments of this application, the connecting part is constructed as a hook.

[0016] According to some embodiments of this application, a limiting buckle is also provided on the side wall of the 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.

[0017] 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.

[0018] 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.

[0019] According to some embodiments of this application, at least one of the two clearance portions that are joined together to form a clearance through hole is configured as a C-shaped hole.

[0020] 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.

[0021] According to some embodiments of this application, the limiting part includes a connecting plate and a limiting plate. One end of the connecting plate is connected to the plate body, and the limiting plate is connected to the other end of the connecting plate and extends toward the accommodating space to limit the battery cell.

[0022] According to some embodiments of this application, a guide ramp is provided at one end of the connecting plate in the third direction.

[0023] According to some embodiments of this application, buffer portions are provided on both sides of the plate body in the first direction.

[0024] 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.

[0025] 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 is in concave-convex fit with the first mounting part.

[0026] According to some embodiments of this application, the partition is provided with multiple weight-reducing sections.

[0027] According to some embodiments of this application, the restraint tray further includes a push plate assembly disposed on the bracket and adapted to push against an end partition of the partition assembly located at the end.

[0028] This application proposes a formation device, including: the restraint tray in the above embodiments.

[0029] 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

[0030] 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:

[0031] Figure 1 is a schematic diagram of the engagement of a restraint tray and a battery cell according to an embodiment of this application;

[0032] Figure 2 is another schematic diagram of the engagement between the restraint tray and the battery cell according to an embodiment of this application;

[0033] Figure 3 is a schematic diagram of an angle of the intermediate partition according to an embodiment of this application;

[0034] Figure 4 is a schematic diagram of the intermediate partition from another angle according to an embodiment of this application;

[0035] Figure 5 is a schematic diagram of a cushioning pad according to an embodiment of this application;

[0036] Figure 6 is a schematic diagram of the covering layer according to an embodiment of this application;

[0037] Figure 7 is a schematic diagram of the end partition and push plate assembly according to an embodiment of this application;

[0038] Figure 8 is a schematic diagram of a formation apparatus according to an embodiment of this application. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] The inventors discovered through research that the partition assembly on conventional restraint trays in the prior art has a complex connection structure between adjacent partitions, which is costly and prone to jamming. This makes it more difficult to adjust the position between adjacent partitions and reduces the ease of use of the restraint tray.

[0047] Based on this, this application proposes a restraint tray, which has a simpler structure, lower cost, lower probability of jamming during operation, higher operational stability, and greater ease of use.

[0048] The restraint tray 100 and the formation device 1000 according to embodiments of this application are described below with reference to Figures 1-8.

[0049] As shown in Figures 1 and 2, 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.

[0050] Referring to Figures 3 and 4, 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 abuts against the second claw 213.

[0051] 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.

[0052] 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.

[0053] It is understandable that a push plate assembly 30 can be provided between the first end plate 12 and the partition assembly 20. The push plate assembly 30 can be provided on the bracket 10, such as on the first end plate 12 or on the second end plate 13, 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 limiting, prevent the partitions 21 from disengaging, and improve the stability and reliability of the partition assembly 20.

[0054] 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.

[0055] It should be noted that in the embodiments of this application, the first direction can be the length direction, i.e., the X direction shown in the figure; the second direction can be the width direction, i.e., the Y direction shown in the figure; and the third direction can be the height direction or the up-down direction, i.e., the Z direction shown in the figure.

[0056] Referring to Figures 3 and 4, 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 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.

[0057] 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.

[0058] 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.

[0059] As shown in Figures 2, 3, 4 and 7, 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.

[0060] 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.

[0061] 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 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] As shown in Figures 2, 3, and 4, 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.

[0069] 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.

[0070] 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.

[0071] In some embodiments, the connecting portion 2111 is configured as a hook.

[0072] 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.

[0073] As shown in Figure 4, 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.

[0074] 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.

[0075] 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.

[0076] As shown in Figures 3, 4 and 7, 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] As shown in Figures 3 and 4, 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] As shown in Figure 4, 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.

[0085] 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.

[0086] 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.

[0087] Referring to Figures 4 and 7, 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.

[0088] 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.

[0089] 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.

[0090] It is understandable that the connecting plate 2141 has a guide ramp 2143 at one end in the third direction.

[0091] 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.

[0092] As shown in Figures 5 and 7, buffer portions 215 are provided on both sides of the plate body 211 in the first direction.

[0093] 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.

[0094] 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.

[0095] As shown in Figures 5 and 6, 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.

[0096] 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.

[0097] It is understood that both the push plate assembly 30 and the adjustment assembly 40 are 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, thereby pressing the battery cell 200 into a constrained state between the partitions 21 for 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] Referring to Figure 2, according to some embodiments of this application, the partition assembly 20 is provided with a plurality of weight reduction parts 50.

[0102] Specifically, the weight-reducing part 50 can be constructed as a hollow part or 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.

[0103] 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.

[0104] As shown in Figure 8, this application provides a formation device 1000, including: the restraint tray 100 in the above embodiment.

[0105] Other configurations and operations of the restraint tray 100 and the formation device 1000 according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0106] 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.

[0107] 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) has a first end plate (12) and a second end plate (13) opposite each other in a first direction; 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 (200). in The partition (21) includes: a plate body (211), a first claw (212) located on one side of the plate body (211) in the 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 adapt the partition assembly (20) to switch between a pressing position and a releasing position. In the releasing position, the first claw (212) abuts against the second claw (213).

2. The restraint tray according to claim 1, wherein, 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). At the other end of (2131), the first plate portion (2121) and the second plate portion (2131) are disposed opposite each other in a second direction perpendicular to the first direction, the first claw portion (2122) extends toward the receiving space in the second direction, and the second claw portion (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).

3. The restraint tray according to claim 2, 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).

4. Within the restraint tray according to claim 2 or 3, 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.

5. The restraint tray according to any one of claims 1-4, 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).

6. The restraint tray according to claim 5, wherein, 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) 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).

7. The restraint tray according to claim 6, wherein, The connecting part (2111) is configured as a hook.

8. The restraint tray according to claim 6 or 7, 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).

9. The restraint tray according to any one of claims 6-8, 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 (200).

10. The restraint tray according to claim 9, 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 (200).

11. The restraint tray according to claim 10, wherein, At least one of the two clearance portions (2114) that form the clearance through hole is configured as a C-shaped hole.

12. Within the restraint tray according to any one of claims 6-11, 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 (200).

13. The restraint tray according to claim 12, wherein, 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).

14. Within the restraint tray according to claim 13, wherein, The connecting plate (2141) is provided with a guide slope (2143) at one end in the third direction.

15. The restraint tray according to any one of claims 1-14, wherein, The plate body (211) is provided with buffer portions (215) on both sides in the first direction.

16. The restraint tray according to claim 15, 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.

17. The restraint tray according to claim 15 or 16, 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).

18. The restraint tray according to any one of claims 1-17, wherein, The partition (21) is provided with multiple weight-reducing parts (50).

19. The restraint tray according to any one of claims 1-18, wherein, Also includes: A push plate assembly (30) is disposed on the bracket (10) and adapted to push against the end partition (21b) of the partition assembly (20) at its end.

20. A chemical formation device, wherein, include: The restraint tray according to any one of claims 1-19.

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