A modular stackable device

Abstract

The utility model discloses a separation formula module stacking device relates to battery manufacturing technical field, wherein, the assembly is provided with the stacking station, the stacking station can be inlayed or cut off with the stacking station, and the stacking platform includes the tray and the compression assembly, and the tray is equipped with the placement position for supporting the electric core pile, and the compression assembly is slidably arranged on the tray along the first direction to compress the electric core pile on the placement position, the pressure mechanism is arranged on the assembly, and the pressure mechanism includes the pressure assembly and the down -pressing component, and the pressure assembly can push the compression assembly on the stacking station along the first direction to carry out the clamping compression to the electric core pile, and the down -pressing component extends along the first direction, and the placement position and the compression assembly jointly form the compression structure that the electric core pile is pressed tightly all around. The utility model has high compatibility, and the stacking effect is good, can exert the effect of all -around compression to the electric core pile of different models fast, and avoids the electric core pile and appears the partial position cracking problem because of the excessive local pressure.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a separate module stacking device. Background Technology

[0002] The cell stacking process refers to the process of stacking several individual cells to form a module or battery pack; it is part of the module stacking assembly process. In the stacking process, a pressurizing mechanism is typically used to pressurize and stack the individual cells. In existing technologies, clamping components are used to press the ends of the cell stack together to achieve compression between the cells.

[0003] However, existing battery module stacking equipment has the following problems: (1) The pressing mechanism and the stacking platform are usually set up as one unit. When using the pressing mechanism to stack and press different types of cells, since the central axis of the pressing mechanism needs to overlap with the central axis of the cell stack or be on the same vertical plane, different pressing mechanisms need to be replaced, which will lead to high production costs and poor compatibility. (2) When stacking cells, adhesive or foam components are set between the cells due to process requirements. The cell stack is usually partially pressed in a semi-enclosed manner, which will cause the unpressed part of the cell to generate separation force, resulting in poor stacking effect. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a separate module stacking device with high compatibility and excellent stacking effect. It can quickly apply full-circumference compression to different types of battery cell stacks and can avoid the problem of partial cracking of battery cell stacks due to excessive local pressure.

[0005] This utility model embodiment provides a separate module stacking device, which includes: Assembly rack, which is equipped with stacking stations; A stacking platform configured to engage or disengage with the stacking station, the stacking platform including a tray and a clamping assembly, the tray having a placement position for supporting a cell stack, and the clamping assembly being slidably disposed on the tray along a first direction for clamping the cell stack on the placement position. A pressurizing mechanism, disposed on an assembly frame, includes a pressurizing component and a pressing component. The pressurizing component is configured to push the clamping component on the stacking station along a first direction to clamp the cell stack. The pressing component extends along the first direction and is configured to form a clamping structure with the placement position and the clamping component for clamping the cell stack around its entire circumference.

[0006] The separate module stacking device according to the embodiments of the present invention has at least the following advantages: Because the stacking platform and the pressurizing mechanism are designed separately, it is possible to place battery cells of different sizes on the placement position of the stacking platform, and apply a pre-compression effect along the first direction to the battery cell stack through the pressing component, so that the central axis of the battery cell stack extending along the first direction overlaps with or is on the same vertical plane as the central axis of the pressing component extending along the first direction, eliminating the need to replace the pressing component according to the battery cell size; when the stacking platform carrying the battery cell stack is transferred to the assembly rack... After the stacking station is completed, the pressurizing mechanism is activated. The pressurizing component applies a pushing force to the clamping component along the first direction, causing the clamping component to clamp the battery cell stack. At the same time, the pressing component applies a pressing force to the battery cell stack. Thus, through the cooperation of the tray, clamping component, pressurizing component, and pressing component, the battery cell stack is fully compressed around the circumference, avoiding excessive local pressure that could cause cracking in some parts of the battery cell stack. This achieves the purpose of pressurizing and stacking battery cell stacks of different sizes, improving compatibility and stacking effect, and reducing production costs.

[0007] In some embodiments of this utility model, the clamping assembly includes two clamping members, which are symmetrically arranged on both sides of the placement position along a first direction. The clamping members are slidably connected to the tray along the first direction. Each clamping member has a first locking portion on the side away from the placement position along the first direction. The first locking portion is located at the center of the clamping member along a second direction. The pressurizing assembly includes two pressurizing members that are symmetrically arranged along the first direction and can approach each other. Each pressurizing member has a second locking portion, which is located at the center of the pressurizing member along the second direction. The second locking portion is configured to approach and lock onto the first locking portion along the first direction. The second direction is perpendicular to the first direction.

[0008] In some embodiments of this utility model, the second snap-fit ​​portion is symmetrically provided with the pressing component on both sides along the second direction.

[0009] In some embodiments of this utility model, each of the pressurizing members is provided with a limiting surface, the pressing component is located above the second snap-fit ​​portion and below the limiting surface, the pressing component is fitted to the limiting surface or is provided with a vertical gap, and the limiting surface is configured to limit the pressing component.

[0010] In some embodiments of this utility model, the pressurizing mechanism further includes a rotary drive, a lead screw, and a support. The lead screw extends along a first direction and is rotatably connected to the support. The lead screw has a first threaded portion and a second threaded portion with opposite thread directions. The rotary drive is disposed on the support and is drivenly connected to the lead screw. The two pressurizing components are slidably connected to the support along the first direction and are threadedly connected to the first threaded portion and the second threaded portion, respectively.

[0011] In some embodiments of this utility model, the pressure member includes a square-shaped sliding block and a pressure block. The sliding block is sleeved on the lead screw and slidably connected to the support along a first direction. The lower surface of the sliding block is set as the limiting surface. The pressure block is located at the center of the sliding block along a second direction and is connected to the lower surface of the sliding block. The pressure block is provided with a second locking portion; and / or, The pressing assembly includes a pressing rod that extends along a first direction and is located between the limiting surface and the second snap-fit ​​portion. Both ends of the pressing rod along the first direction are provided with connecting portions that connect to the support.

[0012] In some embodiments of the present invention, the stacking platform further includes a limiting component. At least one of the limiting components is provided on the side of the clamping member away from the placement position along the first direction. All of the limiting components are provided on the tray and are configured to limit the clamping member along the first direction when the two clamping members clamp the cell stack.

[0013] In some embodiments of this utility model, the clamping member is provided with limiting wheels on both sides along the second direction, the central axis of the limiting wheel extends along the third direction, the limiting assembly includes a limiting member and a locking member, the limiting member is slidably connected to the tray in a direction perpendicular to the third direction and is configured to limit the limiting wheel along the first direction, the locking member is detachably connected between the tray and the limiting member and is configured to lock the limiting member and the tray when the limiting member contacts the limiting wheel, the third direction is perpendicular to the first direction, the third direction is perpendicular to the second direction; and / or, The tray includes a base and a sliding plate. The sliding plate is located above the base and is slidably connected to the base along a second direction. The sliding plate has the placement position. The clamping member is slidably connected to the sliding plate along a first direction. The limiting component is located on the sliding plate. The assembly frame is provided with a tooling positioning mechanism. There are two tooling positioning mechanisms, which are respectively located on both sides of the stacking station along the second direction. The tooling positioning mechanism is configured to position the sliding plate along the second direction.

[0014] In some embodiments of this utility model, the split module stacking device further includes a moving platform, the assembly frame is provided with a first conveying track extending along a first direction, the moving platform is provided with a second conveying track extending along the first direction, the second conveying track is configured to dock with the first conveying track so that the stacking platform can move between the first conveying track and the second conveying track, and the pressurizing mechanism is configured to move along a second direction, the second direction being perpendicular to the first direction.

[0015] In some embodiments of this utility model, the stacking platform is provided with a positioning hole, and the moving platform is provided with a handrail and a positioning component on one side along the first direction. The positioning component includes an operating rod, a connecting rod, and a positioning rod. The positioning rod extends along a third direction and is slidably connected to the moving platform along the third direction. The two ends of the connecting rod are respectively hinged to the lower end of the positioning rod and one end of the operating rod. The operating rod is hinged to the moving platform and is configured to drive the positioning rod to move along the third direction and extend into the positioning hole under its own weight. The third direction is perpendicular to the first direction and the third direction is perpendicular to the second direction.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the split module stacking device provided according to an embodiment of the present utility model; Figure 2 This is a three-dimensional structural diagram of the separate module stacking device provided according to an embodiment of the present utility model, omitting the stacking platform; Figure 3 This is a three-dimensional structural diagram of the pressurizing mechanism and the stacking platform working together according to an embodiment of the present utility model; Figure 4 This is a three-dimensional structural diagram of the stacking platform provided according to an embodiment of the present utility model; Figure 5 This is a three-dimensional structural diagram of the pressurizing mechanism provided according to an embodiment of the present utility model, omitting the pressing component; Figure 6 This is a three-dimensional structural diagram of the pressurizing mechanism provided according to an embodiment of the present utility model, with the pressing component omitted; Figure 7 This is a three-dimensional structural diagram of the mobile platform provided according to an embodiment of the present utility model.

[0018] Reference numerals: 100, stacking platform; 110, tray; 111, chassis; 112, sliding plate; 113, boss; 114, first slide rail assembly; 115, guide wheel; 120, clamping element; 121, first locking part; 122, limiting wheel; 123, second slide rail assembly; 130, limiting assembly; 131, limiting element; 132, third slide rail assembly; 133, locking element; 200, pressurizing mechanism; 210, pressurizing element; 211, sliding block; 212 213. Pressing block; 220. Second locking part; 221. Drive assembly; 222. Drive motor; 223. Lead screw; 230. Pressing assembly; 240. Support; 250. Fourth slide rail assembly; 300. Moving table; 310. Second conveying rail; 320. Operating lever; 330. Positioning lever; 340. Stop block; 350. Side guard; 360. Handrail; 400. Assembly frame; 500. Fifth slide rail assembly; 600. Tooling positioning mechanism; 700. First conveying rail. Detailed Implementation

[0019] The embodiments of this utility model 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 utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "several" means one or more, and "multiple" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following is for reference. Figures 1 to 7 This invention describes a separate module stacking device provided according to an embodiment of the present invention.

[0023] like Figures 1 to 7As shown, the separate module stacking device according to this embodiment of the present invention can be applied in a battery manufacturing production line to pressurize and stack battery cells to assemble battery modules. This separate module stacking device has the advantages of high compatibility and excellent stacking effect. It can quickly apply full-circumference compression to different types of battery cells and avoid the problem of partial cracking caused by excessive local pressure.

[0024] The discrete module stacking device has a first direction, a second direction, and a third direction, wherein the first direction, the second direction, and the third direction are arranged perpendicularly to each other. In this embodiment, it is assumed that the first direction is the front-to-back direction, the second direction is the left-to-right direction, and the third direction is the up-down direction.

[0025] like Figures 1 to 6 As shown, the modular stacking device includes an assembly frame 400, a stacking platform 100, and a pressurizing mechanism 200.

[0026] The assembly rack 400 is equipped with a stacking station, which provides a pressurized stacking position for the battery cell stacks on the stacking platform 100. It is understood that the specific structure of the assembly rack 400 can be designed according to actual needs, and no specific limitation is made here.

[0027] The stacking platform 100 is separately positioned from the assembly rack 400, and is configured to engage or disengage from the stacking station. It is understood that the stacking platform 100 can move to the stacking station along a first or second direction, or enter the stacking station along other horizontal directions. The stacking platform 100 can be placed on or removed from the stacking station manually or by a robotic arm, thus enabling the stacking platform 100 to enter and exit the stacking station. When the stacking platform 100 is engaged with the stacking station, the battery cells on the stacking platform 100 can be stacked. After the battery cell stacking is completed, the stacking platform 100 can be disengaged from the stacking station.

[0028] like Figure 4 As shown, the stacking platform 100 includes a tray 110 and a clamping assembly. The tray 110 has placement positions for supporting battery cell stacks. The clamping assembly is slidably disposed on the tray 110 along a first direction to clamp the battery cell stacks at the placement positions. When a battery cell stack is placed on the placement position of the tray 110, the clamping assembly is driven to slide relative to the tray 110 along the first direction, allowing the clamping assembly to apply clamping force to both ends of the battery cell stack along the first direction, thus maintaining the battery cell stack in a stable state on the tray 110. In this case, battery cell stacks of different lengths or widths can be placed on the placement positions of the tray 110 and pre-clamped using the clamping assembly.

[0029] Specifically, the clamping assembly includes two clamping members 120. The two clamping members 120 are symmetrically arranged on both sides of the placement position along the first direction. The clamping members 120 are slidably connected to the tray 110 along the first direction. In this embodiment, as shown... Figure 4 As shown, the tray 110 is provided with a first slide rail assembly 114 extending along a first direction. Two first slide rail assemblies 114 are provided and arranged at intervals along a second direction. Correspondingly, the bottom of the clamping member 120 is provided with a first slider, which is slidably connected to the first slide rail assembly 114. The two clamping members 120 can move closer to each other along the first direction to apply a clamping effect to the battery cell stack located in the placement position; the two clamping members 120 can also move further apart along the first direction to release the clamping effect on the battery cell stack, making it easier to remove the battery cell stack.

[0030] Furthermore, each clamping member 120 is provided with a first locking portion 121 on the side away from the placement position along the first direction. The first locking portion 121 is fixed to the clamping member 120. The first locking portion 121 is located at the center position of the clamping member 120 along the second direction, that is, the first locking portion 121 is located on the axis of symmetry of the clamping member 120 extending along the first direction.

[0031] It is understood that the specific structure of the clamping member 120 can be designed according to actual conditions, and is not specifically limited here, as long as the clamping member 120 can provide a clamping plane that fits against the battery cell stack. The clamping plane of the clamping member 120 extends along the second direction, and the size of the clamping plane is not limited, as long as it can fit and clamp various battery cell stack sizes. After the battery cell stack is placed in the placement position, the central axis of the battery cell stack extending along the first direction is made to coincide with or be on the same vertical plane as the central axis of the clamping member 120 extending along the first direction.

[0032] In some embodiments, there is a certain friction between the clamping member 120 and the tray 110, so that the clamping member 120 is not easy to slide relative to the tray 110 when no external force is applied, and the clamping member 120 maintains the state of pressing the battery cell stack.

[0033] In other embodiments, the friction between the clamping member 120 and the tray 110 is weak, and the clamping member 120 is prone to sliding relative to the tray 110. In this case, such as Figure 4 As shown, the stacking platform 100 also includes a limiting component 130. At least one limiting component 130 is provided on the side of the clamping member 120 away from the placement position along a first direction. All limiting components 130 are disposed on the tray 110. The limiting component 130 is configured to limit the clamping member 120 along the first direction when the two clamping members 120 are clamping the cell stack, preventing the clamping member 120 from easily sliding along the first direction under the clamping action on the cell stack, thus causing the clamping effect to disappear.

[0034] Specifically, the clamping member 120 has limiting wheels 122 on both sides along the second direction. The limiting wheels 122 are mounted on the clamping member 120 via rotating shafts, and the central axis of the limiting wheels 122 extends in the vertical direction. The limiting assembly 130 includes a limiting member 131 and a locking member 133. The limiting member 131 is slidably connected to the tray 110 in a direction perpendicular to the vertical direction, allowing the limiting member 131 to slide horizontally relative to the tray 110 to approach or move away from the limiting wheels 122 on the clamping member 120. Furthermore, the limiting member 131 is configured to limit the limiting wheels 122 in the first direction, enabling the two clamping members 120 to maintain a state of pressing the battery cell stack. The locking member 133 is detachably connected between the tray 110 and the limiting member 131, and is configured to lock the limiting member 131 and the tray 110 when the limiting member 131 contacts the limiting wheels 122.

[0035] It is understood that the structures of the limiting member 131 and the locking member 133 are not limited. In some examples, the locking member 133 can be a locking bolt, with one of the tray 110 and the limiting member 131 having a connecting hole and the other having an elongated hole. The locking bolt passes through the connecting hole and the elongated hole to lock the limiting member 131 and the tray 110 when the limiting member 131 applies a limiting action to the limiting wheel 122, keeping the limiting member 131 in contact with the limiting wheel 122. In still other examples, the locking member 133 is a tightening screw, which is threadedly connected to one of the tray 110 and the limiting member 131, and the locking member 133 is tightened against the other of the tray 110 and the limiting member 131. In other examples, the locking element 133 may be a positioning screw, one of the tray 110 and the limiting element 131 may be provided with multiple slots, and the other of the tray 110 and the limiting element 131 may be provided with a positioning screw that can engage with the slots to lock the limiting element 131 in different positions.

[0036] In this embodiment, as Figure 4 As shown, the bottom of the limiting member 131 is provided with a third slider. Correspondingly, the tray 110 is provided with a third slide rail assembly 132 extending along the second direction, and the third slide rail assembly 132 is slidably connected to the third slider. The limiting member 131 has an inclined surface near the limiting wheel 122, and the inclined surface can contact the outer peripheral surface of the limiting wheel 122. After the position of the clamping member 120 is adjusted along the first direction, the limiting member 131 is driven to move along the second direction and approach the limiting wheel 122, so that the limiting member 131 contacts and limits the limiting wheel 122, preventing the clamping member 120 from moving away from the battery cell stack along the first direction while clamping the battery cell stack, thereby ensuring that the two clamping members 120 can maintain a good clamping effect on the battery cell stack.

[0037] The pressurizing mechanism 200 is mounted on the assembly frame 400. The pressurizing mechanism 200 and the stacking platform 100 are designed separately, so that the pressurizing mechanism 200 and the stacking platform 100 can form a clamp-type press-fit structure.

[0038] Furthermore, the pressurizing mechanism 200 is configured to move along the second direction, enabling it to enter and exit the stacking station. Specifically, the upper part of the assembly rack 400 is provided with two fifth slide rail assemblies 500 extending along the second direction. The two fifth slide rail assemblies 500 are arranged at intervals along the first direction. Correspondingly, the pressurizing mechanism 200 is provided with a fifth slider, which is slidably connected to the fifth slide rail assembly 500. A linear drive device is provided on the assembly rack 400. The linear drive device can be a cylinder, hydraulic cylinder, or linear module, etc. The output end of the linear drive device is connected to the pressurizing mechanism 200 to drive the pressurizing mechanism 200 to move along the fifth slide rail assembly 500 on the assembly rack 400, thereby adjusting the position of the pressurizing mechanism 200 in the second direction. This allows the pressurizing mechanism 200 to avoid obstructing the movement of the stacking table 100 along the first direction when it moves along the first direction to enter and exit the stacking station.

[0039] When the stacking platform 100 moves to the stacking station, the stacking platform 100 is located below the pressurizing mechanism 200. At this time, the pressurizing mechanism 200 is driven to move to the stacking station in the second direction, and the pressurizing mechanism 200 is used to press the components to apply a pressurizing stacking effect to the battery cell stack.

[0040] Of course, if the stacking platform 100 moves in or out of the stacking station along the second direction, the pressurizing mechanism 200 can be fixedly mounted on the assembly rack 400. In this case, the pressurizing mechanism 200 will not obstruct the stacking platform 100 from moving in or out of the stacking station. In addition, it is possible that the pressurizing mechanism 200 moves closer to or further away from the stacking station by lifting up or down.

[0041] The pressurizing mechanism 200 includes a pressurizing component and a pressing component 230. The pressurizing component is configured to push a clamping component on the stacking station along a first direction to clamp and press the battery cell stack together. Specifically, the pressurizing component includes a driving component 220 and two pressurizing members 210, which are symmetrically arranged along the first direction and can move closer to or further away from each other along the first direction. In this embodiment, as... Figure 5 and Figure 6 As shown, each pressure member 210 is provided with a second snap-fit ​​portion 213, which is fixed to the pressure member 210. The second snap-fit ​​portion 213 is located at the center of the pressure member 210 along the second direction, and is configured to approach and snap onto the first snap-fit ​​portion 121 along the first direction.

[0042] It is understandable that the specific structure of the pressure member 210 is not limited. The shape of the second locking part 213 is adapted to the shape of the first locking part 121, so that the first locking part 121 and the second locking part 213 can be locked together through the concave and convex structure, so that the second locking part 213 can only move along the first direction to approach or move away from the first locking part 121.

[0043] The function of the drive assembly 220 is to drive the pressure member 210 to move along a first direction. The specific structure of the drive assembly 220 is not limited. In some examples, the drive assembly 220 includes two linear drive members, which can be cylinders, electric cylinders, hydraulic cylinders, or linear modules, etc., and the two linear drive members are respectively driven by the two pressure members 210. In other examples, the drive assembly 220 includes one linear drive member, and both ends of the linear drive member are respectively driven by the two pressure members 210.

[0044] In this embodiment, as Figure 5 and Figure 6 As shown, the pressurizing mechanism 200 also includes a support 240, which is mounted on the fifth slide rail assembly 500 of the assembly frame 400 via a fifth slider. The structure of the support 240 is not limited, as long as it provides an installation position for the drive assembly 220 and the pressurizing component 210. The drive assembly 220 includes a rotary drive and a lead screw 222. The lead screw 222 extends along a first direction and is rotatably connected to the support 240. Specifically, both ends of the lead screw 222 are mounted on the support 240 via bearing seats. The lead screw 222 has a first threaded portion and a second threaded portion, which are sequentially arranged along the length of the lead screw 222. The thread directions of the first and second threaded portions are opposite. The rotary drive is fixedly mounted on the support 240, and its output end is connected to one end of the lead screw 222 to achieve a drive connection between the rotary drive and the lead screw 222. The rotary drive component includes a drive motor 221 and a transmission structure. The transmission structure can be a coupling, a reducer, or a gear transmission structure, etc. The drive motor 221 is connected to the lead screw 222 through the transmission structure.

[0045] Two pressure-applying components 210 are slidably connected to the support 240 along a first direction. Specifically, the pressure-applying components 210 can be mounted on the support 240 via a guide rail slider pair. Furthermore, the two pressure-applying components 210 are respectively configured and threadedly connected to the first threaded portion and the second threaded portion. When the rotary drive is running, the lead screw 222 can rotate in the forward direction. At this time, the two pressure-applying components 210 can move closer together along the first direction, allowing the second locking portion 213 to engage with the first locking portion 121. Thus, under the driving action of the pressure-applying components 210, the two clamping components 120 can apply clamping pressure to the battery cell stack. When the lead screw 222 rotates in the reverse direction under the driving action of the rotary drive, the two pressure-applying components 210 will move away from each other along the first direction, causing the second locking portion 213 to separate from the first locking portion 121. This configuration allows the two pressure-applying components 210 to move synchronously under the operation of the same rotary drive.

[0046] The pressing assembly 230 extends along a first direction and is fixedly mounted on the support 240. The pressing assembly 230 is configured to form a clamping structure with the placement position and the pressing assembly for pressing the entire circumference of the battery cell stack. Specifically, the pressing assembly 230 includes pressing rods. The number of pressing rods is not limited to one; all pressing rods can be spaced apart along a second direction. The length of the pressing rods extends along the first direction, and both ends of the pressing rods along the first direction have connecting portions, so that the pressing rods and the connecting portions on both sides together form a U-shaped structure. The connecting portions are fixedly connected to the support 240. The lower surface of the pressing rod is flat and can be fitted to the upper surface of the battery cell stack. The dimensions of the lower surface of the pressing rod along the second direction can be designed according to actual needs and are not specifically limited here.

[0047] Understandably, when the pressurizing assembly and the clamping assembly work together to clamp and press the battery cell stack, the lower surface of the battery cell stack is in contact with the placement position of the tray 110, the side of the battery cell stack along the first direction is in contact with the clamping member 120, and the lower surface of the pressure rod is in contact with the upper surface of the battery cell stack, thus applying a clamping effect to the upper part of the battery cell stack. In some examples, at the stacking station, the lower surface of the pressure rod is flush with the upper surface of the clamping member 120, and in this case, the upper surface of the battery cell stack is in contact with the lower surface of the pressure rod. In other examples, at the stacking station, the pressure rod is located above the clamping member 120, and there is a certain vertical distance between the lower surface of the pressure rod and the upper surface of the clamping member 120. This vertical distance can be set according to the actual situation and is not specifically limited here. In this case, the upper surface of the battery cell stack is higher than the upper surface of the clamping member 120 and is in contact with the lower surface of the pressure rod.

[0048] Due to process requirements, adhesive or foam components are installed between the pouch cells. When the pressurizing component is working, it can increase the pressure of the clamping component 120 on the cell stack, so that the two clamping components 120 can pressurize and stack the cell stack. During the pressurization process, the cell stack is partially pressed in a semi-enclosed manner. This will cause the unpressurized part of the cell to generate separation force, causing the upper part of the pouch cell to spread out. Therefore, this embodiment adds a pressing component 230 to apply downward pressure to the cell stack during the pressurization process, thereby limiting the upper part of the pouch cell to spread out and ensuring that the cells are tightly attached. In addition, by applying full-circumference pressing effect to the cell stack, the problem of cracking in other parts of the cells due to excessive local pressure is avoided, which is beneficial to improving the pressurization and stacking effect.

[0049] In this embodiment, as Figure 3 As shown, the second latching portion 213 is symmetrically provided with pressing components 230 on both sides along the second direction. It can be understood that during the cell stacking process, the first latching portion 121 of the clamping member 120 on the stacking platform 100 and the second latching portion 213 of the pressing component align during the pressing process to achieve a coaxial stacking and pressing effect. At this time, the pressing axis overlaps with or is on the same vertical plane as the central axis of the cell stack extending along the first direction; under these circumstances, the pressure exerted on the center position of the cell stack along the second direction is stronger than that on the sides, making it easy for the upper part of the cell stack to separate at the center position along the second direction due to local overpressure.

[0050] Since the second latching part 213 is symmetrically provided with pressure rods on both sides along the second direction, it can apply pressure restriction to the center position of the upper part of the cell stack along the second direction. This allows the stacking platform 100 and the pressure mechanism 200 to cooperate to perform coaxial stacking and circumferential pressing on the cell stack in the vertical plane where the pressure axis is located. The pressing uniformity is good, which can avoid the problem of cracking in other parts between cells due to local overpressure.

[0051] In the process of using the separate module stacking device provided in this utility model embodiment, since the stacking platform 100 and the pressurizing mechanism 200 adopt a separate structural design, it is possible to place battery cells of different sizes on the placement position of the stacking platform 100, and apply a pre-compression effect along the first direction to the battery cells by the pressing component, so that the central axis of the battery cells extending along the first direction overlaps with or is on the same vertical plane as the central axis of the pressing component extending along the first direction. In this way, it is not necessary to change the pressing component according to the size of the battery cells, which is beneficial for quickly pressing battery cells of different sizes.

[0052] After the stacking platform 100 carrying the battery cell stack is transferred to the stacking station of the assembly rack 400, the pressurizing mechanism 200 moves to the stacking station along the second direction. The pressurizing component applies a pushing force to the clamping component along the first direction, causing the clamping component to clamp the battery cell stack along the first direction. At the same time, the pressing component 230 applies a downward pressing force to the upper part of the battery cell stack. Thus, through the cooperation of the tray 110, the clamping component, the pressurizing component, and the pressing component 230, a uniform full-circumference pressing effect is applied to the battery cell stack on the vertical plane where the pressurizing axis is located. This effectively avoids cracking of parts of the battery cell stack due to excessive local pressure. Therefore, by adopting a separate clamping arrangement between the stacking platform 100 and the pressurizing mechanism 200, it is possible to quickly pressurize and stack battery cell stacks of different sizes, improve compatibility and stacking effect, and reduce production costs.

[0053] In some embodiments, such as Figure 3 As shown, each pressure member 210 has a limiting surface. The shape of the pressure member 210 is not limited, and the pressure member 210 can provide a horizontally extending limiting surface. The pressing assembly 230 is located above the second latching portion 213, and below the limiting surface. Specifically, the pressing rod is located between the limiting surface and the second latching portion 213. The pressing assembly 230 is fitted to the limiting surface or has a vertical gap, and the limiting surface is configured to limit the pressing assembly 230.

[0054] Understandably, in some examples, the upper surface of the pressure rod is fitted against the limiting surface, and the contact surface between the pressure rod and the limiting surface can be a smooth surface or a plane with a low coefficient of friction. When the pressure member 210 applies a pushing action to the clamping member 120, the clamping member 120 can apply pressure to the cell stack along the first direction. At the same time, the lower surface of the pressure rod is fitted against the upper surface of the cell stack. If the pressure is too strong, the upper part of the cell stack will spread out and exert a force on the pressure rod, causing the pressure rod to bend upwards. If the pressure rod bends upwards, it will exert a blocking action on the pressure member 210 along the first direction, preventing the two pressure members 210 from approaching each other along the first direction. This helps to avoid excessive pressure on the cell stack and ensures that the cells are tightly fitted together without the upper part of the cells spreading out.

[0055] In other examples, there is a certain vertical distance between the upper surface of the pressure rod and the limiting surface. The specific value of the vertical distance is not limited and can be set according to actual needs. Similarly, during the pressurization process, if the pressurization force is too large, the upper part of the cell stack will spread out, causing the pressure rod to bend upward and come into contact with the limiting surface. At this time, the pressure rod can hinder the closing movement of the two pressurizing components 210, thereby limiting the pressurization effect on the cell stack.

[0056] Additionally, a torque sensor can be installed between the lead screw 222 and the output end of the rotary drive component. This torque sensor can collect the torsional torque between the lead screw 222 and the rotary drive component in real time. When the pressure is too strong, the pressure rod will deform upwards, preventing the two pressure components 210 from moving closer together, thus increasing the torsional torque between the lead screw 222 and the rotary drive component. At this time, the torque sensor collects the torsional torque data. If the torsional torque data exceeds the set data, the rotary drive component is controlled to stop operating.

[0057] In this embodiment, as Figure 5 and Figure 6 As shown, the pressure component 210 includes a sliding block 211 and a pressure block 212. The sliding block 211 has a square frame design and is composed of four plates connected vertically in sequence. The sliding block 211 is fitted onto the lead screw 222 and can be threaded onto the lead screw 222 via a nut seat. Furthermore, the sliding block 211 is slidably connected to the support 240 along a first direction. Specifically, the support 240 has two fourth slide rail assemblies 250 at its upper and lower parts, each extending along the first direction. Correspondingly, the sliding block 211 has a fourth slider, which is slidably connected to the fourth slide rail assembly 250. This enhances the movement stability and accuracy of the sliding block 211. Moreover, the support 240 provides support for the sliding block 211, reducing the downward pulling force exerted by the sliding block 211 on the fourth slide rail assembly 250, thus extending the service life of the fourth slide rail assembly 250. The lower surface of the sliding block 211 is designated as a limiting surface.

[0058] The pressure block 212 is located below the sliding block 211, at the center of the sliding block 211 along the second direction, and is fixedly connected to the lower surface of the sliding block 211. The pressure block 212 is provided with a second engaging portion 213. Specifically, the opposing surfaces of the two pressure blocks 212 have the second engaging portion 213, which is located between the two pressure blocks 212. Viewed along the second direction, the second engaging portion 213 is L-shaped.

[0059] In some embodiments, such as Figure 4 As shown, the tray 110 includes a base 111 and a sliding plate 112. The sliding plate 112 is located above the base 111 and is slidably connected to the base 111 along a second direction. Specifically, the base 111 is provided with two first slide rail assemblies 114 extending along the second direction, and the two first slide rail assemblies 114 are arranged at intervals along a first direction. Correspondingly, a first slider is provided at the bottom of the sliding plate 112, and the first slider is slidably connected to the first slide rail assembly 114.

[0060] The sliding disk 112 has a placement position, and the clamping member 120 is slidably connected to the sliding disk 112 along a first direction. Specifically, a boss 113 is provided at the middle position of the sliding disk 112, and the upper surface of the boss 113 is the placement position. Two clamping members 120 are symmetrically arranged on both sides of the boss 113 along the first direction. The sliding disk 112 has two second slide rail assemblies 123 extending along the first direction, and the two second slide rail assemblies 123 are arranged at intervals along the second direction. Correspondingly, a second slider is provided at the bottom of the clamping member 120, and the second slider is slidably connected to the second slide rail assembly 123. A limiting assembly 130 is provided on the sliding disk 112, and there are four limiting assemblies 130, which are respectively set at the four corner positions of the sliding disk 112.

[0061] like Figure 2 As shown, the assembly frame 400 is provided with a tooling positioning mechanism 600. There are two tooling positioning mechanisms 600, which are located on both sides of the stacking station along the second direction. Moreover, the tooling positioning mechanism 600 is configured to position the sliding disk 112 along the second direction.

[0062] It is understandable that the structure of the tooling positioning mechanism 600 is not limited. After the stacking table 100 is delivered to the stacking station, the tooling positioning mechanism 600 is moved along the second direction manually or by a drive component such as a telescopic cylinder. This allows the tooling positioning mechanism 600 to contact and drive the sliding disk 112 to move relative to the chassis 111 along the second direction, thereby positioning the sliding disk 112 in the second direction. This ensures that the second engaging portion 213 of the pressure member 210 accurately engages with the first engaging portion 121 of the clamping member 120. In some examples, one tooling positioning mechanism 600 is fixed, while the other moves along the second direction to push the sliding disk 112 until the sliding disk 112 simultaneously contacts both tooling positioning mechanisms 600. In other examples, the two tooling positioning mechanisms 600 approach each other along the second direction under the action of a drive component to complete the centering and positioning of the sliding disk 112 in the second direction.

[0063] In this embodiment, the tooling positioning mechanism 600 includes two positioning plates. The positioning plates can position the sliding disk 112 by surface-to-surface contact or by a concave-convex fit structure (such as a convex part and a groove).

[0064] In some embodiments, such as Figure 1 , Figure 2 and Figure 7As shown, the modular stacking device also includes a moving platform 300. The assembly rack 400 is provided with a first conveyor track 700, the length of which extends along a first direction. The moving platform 300 is provided with a second conveyor track 310, the length of which also extends along the first direction. The second conveyor track 310 is configured to dock with the first conveyor track 700, allowing the stacking platform 100 to move between the first and second conveyor tracks 700. In this configuration, a pressurizing mechanism 200 is provided on the assembly rack 400 and is movable along a second direction.

[0065] Understandably, the bottom of the mobile platform 300 is equipped with casters to facilitate the movement of the mobile platform 300 to transport the stacking platform 100. Through the docking of the first conveyor rail 700 and the second conveyor rail 310, the stacking platform 100 can be pushed from the second conveyor rail 310 onto the first conveyor rail 700 to complete the loading process, which facilitates the subsequent pressurization and stacking of the battery cells. After the pressurization and stacking process is completed, the stacking platform 100 is pushed from the first conveyor rail 700 onto the second conveyor rail 310 to complete the unloading process.

[0066] In this embodiment, both the first conveying track 700 and the second conveying track 310 are roller conveying mechanisms. The first conveying track 700 has a positioning block on the side away from the moving platform 300 along a first direction. When the stacking platform 100 contacts the positioning block, the stacking platform 100 is positioned on the assembly frame 400 along the first direction. The second conveying track 310 has a stop block 340 on the side away from the first conveying track 700 along the first direction. When the stacking platform 100 contacts the stop block 340, the stacking platform 100 is positioned on the moving platform 300 along the first direction.

[0067] In addition, the sliding disk 112 is provided with multiple guide wheels 115 on both sides along the second direction. The central axis of the guide wheels 115 extends in the vertical direction. Correspondingly, the moving table 300 is provided with side rails 350 on both sides along the second direction, and the second conveying track 310 is provided with side rails 350 on both sides along the second direction. Similarly, the assembly frame 400 is provided with guide sides on both sides along the second direction, and the first conveying track 700 is provided with guide sides on both sides along the second direction. When the first conveying track 700 and the second conveying track 310 are docked, the side rails 350 and the guide sides will also dock. During the process of the stacking table 100 being transferred from the moving table 300 to the stacking station, the guide wheels 115 will roll on the side rails 350 and the guide sides. Through the cooperation of the guide wheels 115 with the side rails 350 and the guide sides, the stacking table 100 can move stably in a straight line along the first direction.

[0068] Furthermore, the stacking platform 100 is provided with positioning holes, the central axis of which extends vertically. Specifically, the positioning holes are located on the chassis 111. The moving platform 300 is provided with a handrail 360 and a positioning component on one side along the first direction. The handrail 360 facilitates the movement of the moving platform 300 by the operator. The positioning component is used to position and engage the stacking platform 100 on the moving platform 300, ensuring its stability during movement and preventing it from falling off.

[0069] like Figure 7 As shown, the positioning component is located at the center of the moving platform 300 along the second direction. The positioning component includes an operating lever 320, a connecting rod, and a positioning rod 330. The positioning rod 330 extends vertically and is slidably connected to the moving platform 300 in the vertical direction. Specifically, the positioning rod 330 is a round rod, and the moving platform 300 is provided with a sleeve. The positioning rod 330 passes through the sleeve, and the outer circumferential surface of the positioning rod 330 is adapted to and connected to the inner circumferential surface of the sleeve. The positioning rod 330 has a chamfer on the side away from the handrail 360 along the first direction.

[0070] The two ends of the connecting rod are respectively hinged to the lower end of the positioning rod 330 and one end of the operating rod 320 via hinge shafts. The operating rod 320 is hinged to the moving table 300 via a hinge shaft. The hinge axis of the connecting rod and the hinge axis of the operating rod 320 both extend along the second direction. Furthermore, the operating rod 320 is configured to drive the positioning rod 330 upward under its own weight and extend into the positioning hole.

[0071] Understandably, the total weight of the end of the operating lever 320 near the connecting rod, the connecting rod, and the positioning rod 330 is less than the weight of the end of the operating lever 320 away from the connecting rod. Therefore, without external force, the end of the operating lever 320 near the connecting rod will be tilted upwards, allowing the positioning rod 330 to protrude upwards and engage with the positioning hole of the stacking platform 100, thus achieving a positioning engagement between the positioning component and the stacking platform 100. When it is necessary to release the positioning engagement, an upward external force is applied to the end of the operating lever 320 away from the positioning rod 330. Using the lever principle, the operating lever 320 is driven to move the positioning rod 330 downwards through the connecting rod, causing the positioning rod 330 to disengage from the positioning hole.

[0072] The operating lever 320 is positioned near the handrail 360, allowing the operator to easily apply force to it after the first conveyor rail 700 and the second conveyor rail 310 are connected. After releasing the positioning latch, the stacking platform 100 can be pushed towards the first conveyor rail 700. After the pressurization and stacking work is completed, the operator pushes the stacking platform 100 from the first conveyor rail 700 towards the second conveyor rail 310. During the movement of the stacking platform 100 along the second conveyor rail 310, the positioning rod 330 has a chamfer. Under the guidance of the chamfer, the stacking platform 100 can move relative to the positioning rod 330 in the first direction and apply force to the positioning rod 330 to drive it downward. This allows the positioning hole to move relative to the positioning rod 330 in the first direction to above the positioning rod 330. At this point, the force exerted by the stacking platform 100 on the positioning rod 330 disappears, and the positioning rod 330 automatically moves upward and inserts into the positioning hole under the weight of the operating lever 320.

[0073] 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 the present invention. 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.

[0074] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A modular stackable device, comprising: include: Assembly rack (400) with stacking stations; A stacking platform (100) configured to engage or disengage with the stacking station, the stacking platform (100) including a tray (110) and a clamping assembly, the tray (110) having a placement position for supporting a cell stack, the clamping assembly being slidably disposed on the tray (110) in a first direction for clamping the cell stack on the placement position; A pressurizing mechanism (200) is disposed on an assembly frame (400). The pressurizing mechanism (200) includes a pressurizing component and a pressing component (230). The pressurizing component is configured to push the clamping component on the stacking station in a first direction to clamp the cell stack. The pressing component (230) extends in the first direction and is configured to form a clamping structure with the placement position and the clamping component for clamping the cell stack around its entire circumference.

2. The separate module stacking device according to claim 1, characterized in that, The pressing assembly includes two pressing members (120), which are symmetrically arranged on both sides of the placement position along the first direction. The pressing members (120) are slidably connected to the tray (110) along the first direction. Each pressing member (120) has a first locking part (121) on the side away from the placement position along the first direction. The first locking part (121) is located at the center of the pressing member (120) along the second direction. The pressurizing assembly includes two pressurizing members (210) that are symmetrically arranged along the first direction and can approach each other. Each pressurizing member (210) has a second locking part (213) located at the center of the pressurizing member (210) along the second direction. The second locking part (213) is configured to approach and lock onto the first locking part (121) along the first direction. The second direction is perpendicular to the first direction.

3. The separate module stacking device according to claim 2, characterized in that, The second snap-fit ​​portion (213) is symmetrically provided with the pressing component (230) on both sides along the second direction.

4. The separate module stacking device according to claim 3, characterized in that, Each of the pressurizing components (210) is provided with a limiting surface. The pressing component (230) is located above the second snap-fit ​​portion (213) and below the limiting surface. The pressing component (230) is fitted to the limiting surface or has an upper and lower gap. The limiting surface is configured to limit the pressing component (230).

5. The separate module stacking device according to claim 4, characterized in that, The pressurizing mechanism (200) further includes a rotary drive, a lead screw (222), and a support (240). The lead screw (222) extends along a first direction and is rotatably connected to the support (240). The lead screw (222) has a first threaded portion and a second threaded portion with opposite thread directions. The rotary drive is disposed on the support (240) and is drivenly connected to the lead screw (222). The two pressurizing components (210) are slidably connected to the support (240) along the first direction and are threadedly connected to the first threaded portion and the second threaded portion, respectively.

6. The separate module stacking device according to claim 5, characterized in that, The pressure member (210) includes a square-shaped sliding block (211) and a pressure block (212). The sliding block (211) is sleeved on the lead screw (222) and slidably connected to the support (240) along a first direction. The lower surface of the sliding block (211) is the limiting surface. The pressure block (212) is located at the center of the sliding block (211) along a second direction and is connected to the lower surface of the sliding block (211). The pressure block (212) is provided with a second locking part (213); and / or, The pressing assembly (230) includes a pressing rod that extends along a first direction and is located between the limiting surface and the second snap-fit ​​portion (213). Both ends of the pressing rod along the first direction are provided with connecting portions that connect to the support (240).

7. The separate module stacking device according to claim 2, characterized in that, The stacking platform (100) further includes a limiting component (130), and at least one of the limiting components (130) is provided on the side of the clamping member (120) away from the placement position along a first direction. All of the limiting components (130) are provided on the tray (110) and are configured to limit the clamping member (120) along the first direction when the two clamping members (120) clamp the cell stack.

8. The separate module stacking device according to claim 7, characterized in that, The clamping member (120) is provided with limiting wheels (122) on both sides along the second direction. The central axis of the limiting wheel (122) extends along the third direction. The limiting assembly (130) includes a limiting member (131) and a locking member (133). The limiting member (131) is slidably connected to the tray (110) in a direction perpendicular to the third direction and is configured to limit the limiting wheel (122) along the first direction. The locking member (133) is detachably connected between the tray (110) and the limiting member (131) and is configured to lock the limiting member (131) and the tray (110) when the limiting member (131) contacts the limiting wheel (122). The third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction; and / or, The tray (110) includes a base (111) and a sliding tray (112). The sliding tray (112) is located above the base (111) and is slidably connected to the base (111) along a second direction. The sliding tray (112) has the placement position. The clamping member (120) is slidably connected to the sliding tray (112) along a first direction. The limiting component (130) is located on the sliding tray (112). The assembly frame (400) is provided with a tooling positioning mechanism (600). There are two tooling positioning mechanisms (600), which are located on both sides of the stacking station along the second direction. The tooling positioning mechanism (600) is configured to position the sliding tray (112) along the second direction.

9. The separate module stacking device according to claim 1, characterized in that, It also includes a moving platform (300), the assembly rack (400) having a first conveying track (700) extending in a first direction, the moving platform (300) having a second conveying track (310) extending in the first direction, the second conveying track (310) being configured to dock with the first conveying track (700) to allow the stacking platform (100) to move between the first conveying track (700) and the second conveying track (310), and the pressurizing mechanism (200) being configured to move in a second direction perpendicular to the first direction.

10. The separate module stacking device according to claim 9, characterized in that, The stacking platform (100) is provided with a positioning hole. The moving platform (300) is provided with a handrail (360) and a positioning component on one side along the first direction. The positioning component includes an operating rod (320), a connecting rod, and a positioning rod (330). The positioning rod (330) extends along a third direction and is slidably connected to the moving platform (300) along the third direction. The two ends of the connecting rod are respectively hinged to the lower end of the positioning rod (330) and one end of the operating rod (320). The operating rod (320) is hinged to the moving platform (300) and is configured to drive the positioning rod (330) to move along the third direction and extend into the positioning hole under its own weight. The third direction is perpendicular to the first direction and the third direction is perpendicular to the second direction.

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