Battery module stacking equipment

Abstract

The present application discloses a battery module stacking device, which relates to the technical field of battery processing equipment. The battery module stacking device includes a support frame and a stacking tool; the stacking tool is arranged on the support frame, and the stacking tool includes a stacking table, an end plate positioning mechanism, a battery cell positioning mechanism, and a length pushing mechanism; wherein the end plate positioning mechanism is arranged on the stacking table and is configured to position the end plate assembly, the end plate assembly including an end plate and at least one battery cell; the battery cell positioning mechanism is arranged on the stacking table and is configured to position two adjacent groups of battery cells and compress the stacked battery module; the length pushing mechanism is arranged on the stacking table and is configured to push the end plate assembly toward the end plate positioning mechanism and push the battery cell toward the battery cell positioning mechanism. The technical solution provided by the present application can solve the problem of low assembly accuracy of battery module stacking.

Description

Technical Field

[0001] The present application relates to the technical field of battery processing equipment, and in particular to a battery module stacking device. Background Art

[0002] With the rapid development of society, the demand for electric vehicles (EVs) is increasing year by year. The primary source of energy for EVs is the battery pack. The smallest unit of a battery pack is the cell, which is an electrical energy storage unit. When multiple cells are encapsulated within a common housing and connected to the outside world through a unified boundary, they form a battery module. When these modules are controlled or managed by a BMS (battery management system) and a thermal management system, this unified whole becomes a battery pack. The process of placing multiple cells within the same housing is called battery module stacking.

[0003] In the related art, a robot cell gripper grabs the cell and places it on a stacking ramp cache table, and then the stacking ramp gripper grabs the cell from the cache table to complete the stacking. However, the position of the cell when it is grabbed to the cache table is different each time, resulting in low accuracy in the stacking assembly of the battery module. Summary of the Invention

[0004] In view of the above problems, the present application provides a battery module stacking device, which aims to solve the problem of low assembly accuracy of battery module stacking.

[0005] The present application provides a battery module stacking device, comprising a support frame and a stacking tool; the stacking tool is arranged on the support frame, and the stacking tool comprises a stacking platform, an end plate positioning mechanism, a cell positioning mechanism and a length pushing mechanism; wherein the end plate positioning mechanism is arranged on the stacking platform, and is configured to position the end plate assembly, the end plate assembly comprising an end plate and at least one cell; the cell positioning mechanism is arranged on the stacking platform, and is configured to position two adjacent groups of cells and press the stacked battery module; the length pushing mechanism is arranged on the stacking platform, and is configured to push the end plate assembly toward the end plate positioning mechanism, and push the cell toward the cell positioning mechanism; the end plate positioning mechanism is configured to be positioned on the first side The end plate assembly is positioned in the first direction and the second direction; the end plate positioning mechanism includes a first centering mechanism, a first clamping mechanism and a second clamping mechanism; the first centering mechanism is configured to position the battery cell of the end plate assembly in the first direction; the first clamping mechanism is arranged on one side of the first centering mechanism and is configured to position the end plate in the second direction; the second clamping mechanism is arranged on a side of the first centering mechanism away from the first clamping mechanism and is configured to position the battery cell of the end plate assembly in the second direction; the end plate positioning mechanism also includes a positioning member, which is arranged below the first centering mechanism and is configured to be inserted into the notch of the end plate to position the end plate in the first direction and the second direction.

[0006] In the technical solution of the embodiment of the present application, the technical solution of the present application adopts a battery module stacking device to achieve the stacking of battery modules. In the first step, the end plate assembly is first placed on the stacking table, and the length pushing mechanism is used to push the end plate assembly toward the end plate positioning mechanism, so that the end plate assembly is positioned by the end plate positioning mechanism; in the second step, the next group of battery cells is placed on the stacking table, and the length pushing mechanism is used to push the battery cells toward the battery cell positioning mechanism, so that the battery cells on the end plate assembly and the next group of battery cells are positioned by the battery cell positioning mechanism, that is, the battery cell positioning mechanism is used to position the two adjacent groups of battery cells, and the battery cell positioning mechanism is used to press the stacked battery module so that the two adjacent groups of battery cells fit together, and the above second step is repeated according to the number of battery cells in the battery module; when there are enough battery cells stacked, the last group of end plate assemblies is finally placed on the stacking table, and the length pushing mechanism is used to push the last group of end plate assemblies toward the battery cell positioning mechanism, so that the battery cell positioning mechanism is used to position the last group of end plate assemblies, and the battery cell positioning mechanism is used to press the stacked battery module, and finally the stacking of the entire battery module is completed. Therefore, the battery module stacking equipment provided in the present application directly places the end plate assembly and the battery cells on the stacking table, and then uses the cooperation of the end plate positioning mechanism, the battery cell positioning mechanism and the length pushing mechanism to realize the automatic stacking of the battery modules. There is no need to first place the battery cells on the stacking ramp cache table, and then use the stacking ramp clamp to grab the battery cells from the cache table to complete the stacking, thereby reducing the size ring to improve the flatness of the bottom and side of the battery cells, thereby improving the assembly accuracy. In addition, the end plate positioning mechanism can be used to position the end plate assembly in the X-axis and Z-axis directions to improve the bottom and side flatness of the end plate assembly, which can improve the positioning accuracy of the end plate assembly; the first centering mechanism can be used to position the battery cell of the end plate assembly in the first direction, and then the end plate assembly is centered in the first direction to improve the side flatness of the end plate assembly; at the same time, the first clamping mechanism and the second clamping mechanism can be used to position the end plate and the battery cell respectively in the second direction to press the end plate assembly against the table surface of the stacking table, so that the end plate assembly is tightly attached to the table surface of the stacking table to improve the bottom flatness of the end plate assembly. In addition, when the length pushing mechanism pushes the end plate assembly toward the end plate positioning mechanism, the positioning piece is first inserted into the notch of the end plate to pre-position the end plate in the first and second directions, and then the end plate assembly is re-positioned by the first centering mechanism, the first clamping mechanism and the second clamping mechanism, which can further improve the positioning accuracy of the end plate assembly.

[0007] In some embodiments, the battery cell positioning mechanism is configured to position two adjacent groups of battery cells in a first direction and a second direction, and to compress the stacked battery module in a third direction; the length pushing mechanism is configured to push the end plate assembly and the battery cells in the third direction; the first direction, the second direction, and the third direction are arranged at an angle to each other. With such a design, the battery cell positioning mechanism can be used to position two adjacent groups of battery cells in the X-axis and Z-axis directions to improve the bottom and side flatness of the two adjacent groups of battery cells, thereby improving the positioning accuracy of the two adjacent groups of battery cells. In addition, by using the battery cell positioning mechanism to compress the stacked battery module in the Y-axis direction, and using the length pushing mechanism to push the end plate assembly and the battery cells in the Y-axis direction, the positioning effect of the end plate assembly and the battery cells can be maintained without affecting the pushing and pressing process, thereby achieving both high positioning accuracy and automated stacking effects.

[0008] In some embodiments, the positioning member is retractable in the second direction. With this design, when the length-pushing mechanism pushes the end plate assembly toward the end plate positioning mechanism, the positioning member extends in the second direction into the notch of the end plate to pre-position the end plate. After stacking is completed, the positioning member can retract in the second direction to escape from the notch of the end plate, making it easier to remove the stacked battery module.

[0009] In some embodiments, the first centering mechanism includes a first driving member and two oppositely disposed first baffles, the first baffles being transmission-connected to the first driving member, and the first driving member driving the two first baffles toward or away from each other to clamp or release the battery cells of the end plate assembly in a first direction. With this design, when the first driving member drives the two first baffles toward each other, the two first baffles can clamp the battery cells of the end plate assembly to center the end plate assembly; when the first driving member drives the two first baffles away from each other, the two first baffles release the end plate assembly to facilitate removal of the stacked battery modules.

[0010] In some embodiments, the first pressing mechanism includes a second driving member and a first pressing member, wherein the first pressing member is connected to the second driving member by transmission, and the second driving member drives the first pressing member to rise and fall to press or release the end plate in the second direction. With this design, when the first pressing member is driven down by the second driving member, the end plate can be pressed against the table surface of the stacking table in the second direction by the first pressing member to improve the bottom flatness of the end plate; when the first pressing member is driven up by the second driving member, the first pressing member releases the end plate to facilitate removal of the stacked battery module.

[0011] In some embodiments, the second pressing mechanism includes a third driving member and a second pressing member, the second pressing member being connected to the third driving member by transmission, and the third driving member driving the second pressing member to rise and fall to press or release the battery cells of the end plate assembly in the second direction. With this design, when the second pressing member is driven down by the third driving member, the battery cells of the end plate assembly can be pressed against the table surface of the stacking table in the second direction by the second pressing member to improve the bottom flatness of the battery cells; when the second pressing member is driven up by the third driving member, the second pressing member releases the battery cells to facilitate removal of the stacked battery module.

[0012] In some embodiments, the battery cell positioning mechanism includes a second centering mechanism, a third pressing mechanism, and a large-surface pushing mechanism; the second centering mechanism is configured to position two adjacent groups of battery cells in a first direction; the third pressing mechanism is provided on one side of the second centering mechanism and is configured to position the two adjacent groups of battery cells in a second direction; the large-surface pushing mechanism is provided on one side of the second centering mechanism and is configured to press the stacked battery modules in a third direction. With such a design, the second centering mechanism can be used to center the two adjacent groups of battery cells in the first direction to improve the side flatness of the two adjacent groups of battery cells; at the same time, the third pressing mechanism can be used to position the two adjacent groups of battery cells in the second direction to press the two adjacent groups of battery cells against the table surface of the stacking table so that the two adjacent groups of battery cells are closely attached to the table surface of the stacking table to improve the bottom flatness of the battery cells; and the large-surface pushing mechanism can be used to press the stacked battery modules in the third direction to press the two adjacent groups of battery cells together and maintain the pressure of the stacked battery modules, thereby improving the stacking accuracy of the battery modules.

[0013] In some embodiments, the second centering mechanism includes a fourth drive member and two oppositely disposed second baffles, the second baffles being transmission-connected to the fourth drive member, and the fourth drive member driving the two second baffles to move toward or away from each other to clamp or release two adjacent groups of battery cells in the first direction. With this design, when the fourth drive member drives the two second baffles toward each other, the two second baffles can clamp the two adjacent groups of battery cells to center the two adjacent groups of battery cells; when the fourth drive member drives the two second baffles to move away from each other, the two second baffles release the two adjacent groups of battery cells to facilitate removal of the stacked battery module.

[0014] In some embodiments, the third clamping mechanism includes a fifth drive member and a third clamping member, the third clamping member being transmission-connected to the fifth drive member, and the fifth drive member driving the third clamping member to rise and fall, thereby compressing or releasing two adjacent groups of battery cells in the second direction. With such a design, when the third clamping member is driven down by the fifth drive member, the third clamping member can be used to compress the two adjacent groups of battery cells on the table surface of the stacking table in the second direction to improve the bottom flatness of the two adjacent groups of battery cells; when the third clamping member is driven up by the fifth drive member, the third clamping member releases the end plate to facilitate the removal of the stacked battery module.

[0015] In some embodiments, the large-surface pushing mechanism includes a sixth driving member and a pushing member, the pushing member being transmission-connected to the sixth driving member, and the sixth driving member driving the pushing member to move toward the end plate positioning mechanism to compress the stacked battery modules in a third direction. With this design, when the pushing member is driven by the sixth driving member to move toward the end plate positioning mechanism, the stacked battery modules can be compressed in the third direction by the pushing member to press two adjacent groups of battery cells together while maintaining pressure on the stacked battery modules. When the pushing member is driven by the sixth driving member to move away from the end plate positioning mechanism, the pushing member releases the battery modules to facilitate removal of the stacked battery modules.

[0016] In some embodiments, the large-surface pressing mechanism further includes a distance meter configured to detect the distance between two adjacent groups of battery cells. This design, by using the distance meter to detect the distance between two adjacent groups of battery cells, enables precise control of the travel of the sixth driving member driving the pressing member, thereby precisely controlling the pressing force of the pressing member on the battery module, thereby improving the pressing effect on the battery module.

[0017] In some embodiments, the support frame has a loading end and a unloading end distributed along a third direction, and the length pushing mechanism can drive the stacking platform to move in the third direction to switch between the loading end and the unloading end. In such a design, before loading, the stacking platform is first moved to the loading end by the length pushing mechanism, and then the end plate positioning mechanism and the battery cell positioning mechanism on the stacking platform are driven to move to the loading end, so as to facilitate the placement of the end plate assembly and the battery cell on the stacking platform; and before unloading, the stacking platform is moved to the unloading end by the length pushing mechanism, and then the end plate positioning mechanism and the battery cell positioning mechanism on the stacking platform are driven to move to the unloading end, so as to facilitate the removal of the stacked battery modules.

[0018] In some embodiments, the stacking fixtures are provided with at least two layers, and the at least two layers of stacking fixtures are staggered in the second direction. When the stacking fixtures on the upper layer move to the loading end, the stacking fixtures on the lower layer move to the unloading end. This design, using at least two layers of stacking fixtures, allows battery modules on one layer of stacking fixtures to be unloaded simultaneously while the stacking process is being loaded on the other layer, thereby improving work efficiency.

[0019] In some embodiments, the end plate positioning mechanism and the battery cell positioning mechanism are spaced apart along the third direction, and the length-pushing mechanism is located on the side of the battery cell positioning mechanism away from the end plate positioning mechanism. This design allows the length-pushing mechanism to smoothly push the end plate assembly toward the end plate positioning mechanism, and the battery cell toward the battery cell positioning mechanism, while also making the overall structure more compact and reducing its volume.

[0020] In some embodiments, the battery module stacking apparatus further includes a loading mechanism disposed on one side of the support frame and configured to transport the end plate assembly and battery cells to the surface of the stacking table. With this design, the loading mechanism can automatically transport the end plate assembly and battery cells to the surface of the stacking table, thereby achieving automatic loading.

[0021] In some embodiments, the battery module stacking equipment further includes a discharge mechanism, which is disposed on one side of the support frame and is configured to transport the stacked battery modules from the stacking table to the next process. With this design, the discharge mechanism can be used to automatically transport the stacked battery modules from the stacking table to the next process, thereby achieving automatic discharge.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, which can be implemented in accordance with the contents of the specification, and to make other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of an embodiment of a battery module stacking device of the present application;

[0025] Figure 2 This is a structural diagram of a stacking tool in one embodiment of the battery module stacking equipment of the present application;

[0026] Figure 3 This is a partial structural diagram of a stacking tool in one embodiment of the battery module stacking equipment of the present application;

[0027] Figure 4 This is a structural diagram of an end plate positioning mechanism in one embodiment of the battery module stacking device of the present application;

[0028] Figure 5 This is a structural schematic diagram of the cell positioning mechanism in one embodiment of the battery module stacking equipment of the present application.

[0029] Description of Figure Numbers:

[0030]

[0031] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0034] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0035] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0037] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0039] With the rapid development of society, the demand for electric vehicles (EVs) is increasing year by year. The primary source of energy for EVs is the battery pack. The smallest unit of a battery pack is the cell, which is an electrical energy storage unit. When multiple cells are encapsulated within a common housing and connected to the outside world through a unified boundary, they form a battery module. When these modules are controlled or managed by a BMS (battery management system) and a thermal management system, this unified whole becomes a battery pack. The process of placing multiple cells within the same housing is called battery module stacking.

[0040] In the related art, a robot cell gripper grabs the cell and places it on a stacking ramp cache table, and then the stacking ramp gripper grabs the cell from the cache table to complete the stacking. However, the position of the cell when it is grabbed to the cache table is different each time, resulting in low accuracy in the stacking assembly of the battery module.

[0041] Based on the above problems, the present application proposes a battery module stacking device 100, which aims to solve the problem of low assembly precision of battery module stacking. Detailed description of the device is provided below with reference to specific drawings and embodiments.

[0042] See also Figures 1 to 5In one embodiment of the present application, the battery module stacking device 100 includes a support frame 10 and a stacking tool 20; the stacking tool 20 is arranged on the support frame 10, and the stacking tool 20 includes a stacking platform 21, an end plate positioning mechanism 22, a battery cell positioning mechanism 23 and a length pushing mechanism 24; wherein, the end plate positioning mechanism 22 is arranged on the stacking platform 21, and is configured to position the end plate assembly, the end plate assembly includes an end plate and at least one battery cell; the battery cell positioning mechanism 23 is arranged on the stacking platform 21, and is configured to position two adjacent groups of battery cells and press the stacked battery modules; the length pushing mechanism 24 is arranged on the stacking platform 21, and is configured to push the end plate assembly toward the end plate positioning mechanism 22, and push the battery cell toward the battery cell positioning mechanism 23.

[0043] The end plate positioning mechanism 22 is configured to position the end plate assembly in a first direction a and a second direction b. The end plate positioning mechanism 22 includes a first centering mechanism 221, a first clamping mechanism 222, and a second clamping mechanism (not shown). The first centering mechanism 221 is configured to position the battery cells of the end plate assembly in the first direction a. The first clamping mechanism 222 is located on one side of the first centering mechanism 221 and is configured to position the end plate in the second direction b. The second clamping mechanism is located on a side of the first centering mechanism 221 away from the first clamping mechanism 222 and is configured to position the battery cells of the end plate assembly in the second direction b. The end plate positioning mechanism 22 also includes a positioning member 224, which is located below the first centering mechanism 221 and is configured to be inserted into the notch of the end plate to position the end plate in the first direction a and the second direction b.

[0044] The support frame 10 is used to mount and secure the stacking tool 20, ensuring stability during the stacking process. The support frame 10 may include multiple support frames and a mounting plate. The mounting plate is supported on the multiple support frames, so that the multiple support frames and the mounting plate can form a structure in the shape of a cube, cylinder, etc., and the stacking tool 20 is mounted on the mounting plate.

[0045] The stacking tool 20 is used to automatically stack battery modules. The stacking platform 21 is a mounting platform, and the end plate positioning mechanism 22, the battery cell positioning mechanism 23 and the length tightening mechanism 24 are all installed on the stacking platform 21.

[0046] The end plate positioning mechanism 22 can position the end plate assembly in directions including but not limited to horizontal and vertical directions. The end plate positioning mechanism 22 can position the end plate assembly by one or more methods such as centering, pressing, clamping, and holding.

[0047] The first centering mechanism 221 is used to clamp or release the battery cells of the end plate assembly in a first direction a. When clamping the battery cells of the end plate assembly, the battery cells of the end plate assembly can be centered. The first centering mechanism 221 can be a structure composed of a cylinder and a first transmission member, wherein the first transmission member can be a structural member such as a baffle, a push rod, or a clamping claw.

[0048] The first pressing mechanism 222 is used to press or release the end plate in the second direction b so that the end plate is tightly attached to the table surface of the stacking table 21. The first pressing mechanism 222 can also be a structure in which a cylinder cooperates with a second transmission member, wherein the second transmission member can be a structural member such as a pressure block, a pressure plate, or a push rod.

[0049] The second pressing mechanism is used to press or release the battery cells of the end plate assembly in the second direction b, so that the battery cells of the end plate assembly are tightly attached to the surface of the stacking table 21. The second pressing mechanism can also be a structure in which a cylinder cooperates with a third transmission member, wherein the third transmission member can also be a structural member such as a pressure block, a pressure plate, or a push rod.

[0050] The positioning member 224 is used to be inserted into the notch of the end plate and abut against the inner wall of the notch to position the end plate in the first direction a and the second direction b. The positioning member 224 can be a structural member such as a positioning pin, a positioning rod, or a positioning block. There can be one or at least two positioning members 224, which can be determined specifically based on the number of notches on the end plate. The positioning member 224 can be fixed relative to the stacking table 21 or can be movable relative to the stacking table 21, as long as the positioning member 224 is inserted into the notch of the end plate when the end plate assembly moves to the end plate positioning mechanism 22.

[0051] The cell positioning mechanism 23 can position two adjacent groups of cells in directions including, but not limited to, horizontal and vertical directions, ensuring that the bottom and side planes of the two adjacent groups of cells remain consistent. The cell positioning mechanism 23 can also position the two adjacent groups of cells using one or more of the following methods: centering, pressing, clamping, and holding.

[0052] The length pushing mechanism 24 can smoothly push the end plate assembly toward the end plate positioning mechanism 22, and can also push the battery cells and the last set of end plate assemblies toward the battery cell positioning mechanism 23. The length pushing mechanism 24 can use a cylinder and a push rod to push the end plate assembly and the battery cells, or a cylinder and a screw nut, or a cylinder and a gear rack to push the end plate assembly and the battery cells.

[0053] In summary, in the technical solution of the embodiment of the present application, the technical solution of the present application adopts the battery module stacking device 100 to realize the stacking of battery modules. In the first step, the end plate assembly is first placed on the stacking table 21, and the length pushing mechanism 24 is used to push the end plate assembly to the end plate positioning mechanism 22, so as to use the end plate positioning mechanism 22 to position the end plate assembly; in the second step, the next group of battery cells is placed on the stacking table 21, and the length pushing mechanism 24 is used to push the battery cells to the battery cell positioning mechanism 23, so as to use the battery cell positioning mechanism 23 to position the battery cells on the end plate assembly and the next group of battery cells, that is, the battery cell positioning mechanism 23 is used to position the two adjacent groups of battery cells, and the battery cell positioning mechanism 23 is used to position the battery cells. The positioning mechanism 23 presses the stacked battery module to make the two adjacent groups of battery cells fit together. The above second step is repeated according to the number of battery cells in the battery module. When a sufficient number of battery cells are stacked, the last group of end plate assemblies is finally placed on the stacking table 21, and the length pushing mechanism 24 is used to push the last group of end plate assemblies toward the battery cell positioning mechanism 23, so that the battery cell positioning mechanism 23 is used to position the last group of end plate assemblies, and at the same time, the battery cell positioning mechanism 23 is used to press the stacked battery module, and finally the stacking of the entire battery module is completed. Therefore, the battery module stacking equipment 100 provided in the present application directly places the end plate assembly and the battery cells on the stacking table 21, and then uses the cooperation of the end plate positioning mechanism 22, the battery cell positioning mechanism 23 and the length pushing mechanism 24 to realize automatic stacking of the battery modules. There is no need to place the battery cells on the stacking ramp cache table first, and then use the stacking ramp clamp to grab the battery cells from the cache table to complete the stacking, avoiding redundant steps such as grabbing the battery cells from the cache table of the stacking table 21, thereby reducing the size ring increase caused by the superposition of multiple processes, so as to improve the flatness of the bottom and side of the battery cells, and achieve the flatness of the bottom and side of the battery cells <0.1mm, thereby improving the assembly accuracy.

[0054] In addition, the end plate positioning mechanism 22 can be used to position the end plate assembly in the X-axis and Z-axis directions to improve the bottom and side flatness of the end plate assembly, thereby improving the positioning accuracy of the end plate assembly. The first centering mechanism 221 can be used to position the battery cells of the end plate assembly in the first direction a, thereby centering the end plate assembly in the first direction a to improve the side flatness of the end plate assembly. At the same time, the first pressing mechanism 222 and the second pressing mechanism can be used to position the end plate and the battery cells respectively in the second direction b to press the end plate assembly against the table surface of the stacking table 21, so that the end plate assembly is tightly attached to the table surface of the stacking table 21, thereby improving the bottom flatness of the end plate assembly.

[0055] In addition, when the length pushing mechanism 24 pushes the end plate assembly toward the end plate positioning mechanism 22, the positioning piece 224 is first inserted into the notch of the end plate to pre-position the end plate in the first direction a and the second direction b, and then the end plate assembly is re-positioned by the first centering mechanism 221, the first clamping mechanism 222 and the second clamping mechanism, which can further improve the positioning accuracy of the end plate assembly.

[0056] See also Figures 2 to 4 In one embodiment of the present application, the battery cell positioning mechanism 23 is configured to position two adjacent groups of battery cells in the first direction a and the second direction b, and to press the stacked battery module in the third direction c; the length pushing mechanism 24 is configured to push the end plate assembly and the battery cells in the third direction c; the first direction a, the second direction b and the third direction c are arranged at an angle to each other.

[0057] In this embodiment, the first direction a, the second direction b, and the third direction c can be the X-axis, Z-axis, and Y-axis directions, respectively. The end plate positioning mechanism 22 can position the end plate assembly in the X-axis and Z-axis directions; the battery cell positioning mechanism 23 can position two adjacent groups of battery cells in the X-axis and Z-axis directions, and can also compress the stacked battery modules in the Y-axis direction; the length pressing mechanism 24 can push the end plate assembly and battery cells in the Y-axis direction.

[0058] This design allows the cell positioning mechanism 23 to position two adjacent groups of cells in the X-axis and Z-axis directions, thereby improving the flatness of the bottom and side surfaces of the two adjacent groups of cells and improving the positioning accuracy of the two adjacent groups of cells. In addition, by using the cell positioning mechanism 23 to compress the stacked battery modules in the Y-axis direction and using the length-pushing mechanism 24 to push the end plate assembly and cells in the Y-axis direction, the positioning of the end plate assembly and cells can be maintained during the pushing and pressing process, thereby achieving both high positioning accuracy and automated stacking.

[0059] See also Figure 4 In one embodiment of the present application, the positioning member 224 can be extended and retracted in the second direction b.

[0060] When the positioning member 224 extends in the second direction b, it can be inserted into the notch of the end plate; when the positioning member 224 retracts in the second direction b, it can be removed from the notch of the end plate.

[0061] With this design, when the length pushing mechanism 24 pushes the end plate assembly toward the end plate positioning mechanism 22, the positioning member 224 extends in the second direction b into the notch of the end plate to pre-position the end plate. After the stacking is completed, the positioning member 224 can retract in the second direction b to disengage from the notch of the end plate, making it easier to remove the stacked battery module.

[0062] See also Figure 4 In one embodiment of the present application, the first centering mechanism 221 includes a first driving member 2211 and two oppositely arranged first baffles 2212. The first baffles 2212 are transmission-connected to the first driving member 2211. The first driving member 2211 drives the two first baffles 2212 to move closer to or away from each other to clamp or release the battery cells of the end plate assembly in the first direction a.

[0063] The first driving member 2211 provides power for the two first baffles 2212 to move closer to or away from each other. The first driving member 2211 may include a cylinder and two output members. The output member may be a push rod, or a screw nut or a gear rack structure. The two first baffles 2212 are respectively connected to the two output members, and the two output members are driven to move by the cylinder, and then the two first baffles 2212 are respectively driven to move closer to or away from each other by the two output members.

[0064] With this design, when the two first baffles 2212 are driven toward each other by the first driving member 2211, the battery cells of the end plate assembly can be clamped by the two first baffles 2212 to center the end plate assembly; when the two first baffles 2212 are driven away from each other by the first driving member 2211, the two first baffles 2212 release the end plate assembly to facilitate the removal of the stacked battery module.

[0065] See also Figure 4 In one embodiment of the present application, the first clamping mechanism 222 includes a second driving member 2221 and a first clamping member 2222. The first clamping member 2222 is transmission-connected to the second driving member 2221. The second driving member 2221 drives the first clamping member 2222 to rise and fall to clamp or release the end plate in the second direction b.

[0066] The second driving member 2221 provides power for the lifting and lowering of the first clamping member 2222. The second driving member 2221 may only include a linear motor to directly connect the first clamping member 2222 to the output shaft of the linear motor so that it can be lifted and lowered along with the output shaft of the linear motor; or, the second driving member 2221 may also include a rotating motor and a screw nut to connect the screw to the output shaft of the rotating motor, and connect the first clamping member 2222 to the nut. The rotating motor can drive the screw to rotate so that the nut moves along the length direction of the screw, and then drive the first clamping member 2222 to be lifted and lowered through the nut.

[0067] With such a design, when the first pressing member 2222 is driven down by the second driving member 2221, the end plate can be pressed against the table surface of the stacking table 21 in the second direction b by the first pressing member 2222 to improve the bottom flatness of the end plate; when the first pressing member 2222 is driven up by the second driving member 2221, the first pressing member 2222 releases the end plate to facilitate the removal of the stacked battery module.

[0068] See also Figure 4 In one embodiment of the present application, the second clamping mechanism includes a third driving member and a second clamping member. The second clamping member is transmission-connected to the third driving member. The third driving member drives the second clamping member to rise and fall to clamp or release the battery cell of the end plate assembly in the second direction b.

[0069] The third driving member provides power for the lifting and lowering of the second clamping member. The third driving member may only include a linear motor to directly connect the second clamping member to the output shaft of the linear motor so that it can be lifted and lowered along with the output shaft of the linear motor; or, the third driving member may also include a rotating motor and a screw nut to connect the screw to the output shaft of the rotating motor and connect the second clamping member to the nut. The rotating motor can drive the screw to rotate so that the nut moves along the length direction of the screw, and then drive the second clamping member to be lifted and lowered through the nut.

[0070] With this design, when the second pressing member is driven down by the third driving member, the battery cells of the end plate assembly can be pressed against the table surface of the stacking table 21 in the second direction b by the second pressing member to improve the bottom flatness of the battery cells; when the second pressing member is driven up by the third driving member, the second pressing member releases the battery cells to facilitate the removal of the stacked battery module.

[0071] See also Figure 5 In one embodiment of the present application, the battery cell positioning mechanism 23 includes a second centering mechanism 231, a third pressing mechanism 232 and a large-surface pushing mechanism 233; the second centering mechanism 231 is configured to position two adjacent groups of battery cells in a first direction a; the third pressing mechanism 232 is provided on one side of the second centering mechanism 231, and is configured to position two adjacent groups of battery cells in a second direction b; the large-surface pushing mechanism 233 is provided on one side of the second centering mechanism 231, and is configured to press the stacked battery modules in a third direction c.

[0072] The second centering mechanism 231 is used to clamp or release two adjacent groups of battery cells in the first direction a. When clamping two adjacent groups of battery cells, the second centering mechanism 231 can be centered to ensure consistent flatness of the sides of the two adjacent groups of battery cells. The second centering mechanism 231 can be a structure composed of a cylinder and a fourth transmission member, where the fourth transmission member can be a baffle, a push rod, a clamping claw, or other structural components.

[0073] The third pressing mechanism 232 is used to press or release two adjacent groups of battery cells in the second direction b, so that the two adjacent groups of battery cells are tightly attached to the surface of the stacking table 21. The second pressing mechanism can also be a structure in which a cylinder cooperates with a fifth transmission member, wherein the fifth transmission member can be a structural member such as a pressure block, a pressure plate, or a push rod.

[0074] The large-surface pressing mechanism 233 is used to compress the stacked battery modules in the third direction c, thereby pressing two adjacent groups of battery cells together. The large-surface pressing mechanism 233 may include a structure that cooperates with a cylinder and a sixth transmission member. The sixth transmission member may also be a structural member such as a pressure block, a pressure plate, or a push rod.

[0075] With such a design, a second centering mechanism 231 can be used to center two adjacent groups of battery cells in the first direction a to improve the side flatness of the two adjacent groups of battery cells; at the same time, a third clamping mechanism 232 can be used to position the two adjacent groups of battery cells in the second direction b to press the two adjacent groups of battery cells onto the table surface of the stacking table 21, so that the two adjacent groups of battery cells are tightly attached to the table surface of the stacking table 21 to improve the bottom flatness of the battery cells; and a large-surface pushing mechanism 233 is used to press the stacked battery module in the third direction c to press the two adjacent groups of battery cells together, and at the same time maintain the pressure of the stacked battery module, thereby improving the stacking accuracy of the battery module.

[0076] See also Figure 5 In one embodiment of the present application, the second centering mechanism 231 includes a fourth driving member 2311 and two oppositely arranged second baffles 2312, the second baffles 2312 are transmission-connected to the fourth driving member 2311, and the fourth driving member 2311 drives the two second baffles 2312 to move closer to or away from each other to clamp or release two adjacent groups of battery cells in the first direction a.

[0077] The fourth driving member 2311 provides power for the two second baffles 2312 to move closer to or away from each other. The fourth driving member 2311 may include a cylinder and two output members. The output member may be a push rod, or a screw nut or a gear rack structure. The two second baffles 2312 are respectively connected to the two output members, and the two output members are driven to move by the cylinder, and then the two second baffles 2312 are respectively driven to move closer to or away from each other by the two output members.

[0078] With this design, when the two second baffles 2312 are driven to approach each other by the fourth driving member 2311, the two adjacent groups of battery cells can be clamped by the two second baffles 2312 to center the two adjacent groups of battery cells; when the two second baffles 2312 are driven to move away from each other by the fourth driving member 2311, the two second baffles 2312 release the two adjacent groups of battery cells to facilitate the removal of the stacked battery module.

[0079] See also Figure 5 In one embodiment of the present application, the third clamping mechanism 232 includes a fifth driving member 2321 and a third clamping member 2322. The third clamping member 2322 is transmission-connected to the fifth driving member 2321. The fifth driving member 2321 drives the third clamping member 2322 to rise and fall, thereby clamping or releasing two adjacent groups of battery cells in the second direction b.

[0080] The fifth driving member 2321 provides power for the lifting and lowering of the third clamping member 2322. The fifth driving member 2321 may only include a linear motor to directly connect the third clamping member 2322 to the output shaft of the linear motor so that it can be lifted and lowered along with the output shaft of the linear motor; or, the fifth driving member 2321 may also include a rotating motor and a screw nut to connect the screw to the output shaft of the rotating motor, and connect the third clamping member 2322 to the nut. The rotating motor can drive the screw to rotate so that the nut moves along the length direction of the screw, and then drive the third clamping member 2322 to be lifted and lowered through the nut.

[0081] With such a design, when the third pressing member 2322 is driven down by the fifth driving member 2321, the two adjacent groups of battery cells can be pressed onto the table surface of the stacking table 21 in the second direction b by the third pressing member 2322 to improve the bottom flatness of the two adjacent groups of battery cells; when the third pressing member 2322 is driven up by the fifth driving member 2321, the third pressing member 2322 releases the end plate to facilitate the removal of the stacked battery module.

[0082] See also Figure 5 In one embodiment of the present application, the large-surface pushing mechanism 233 includes a sixth driving member 2331 and a pushing member 2332. The pushing member 2332 is transmission-connected to the sixth driving member 2331. The sixth driving member 2331 drives the pushing member 2332 to move toward the end plate positioning mechanism 22 to compress the stacked battery modules in the third direction c.

[0083] The sixth driving member 2331 provides power for the movement of the pushing member 2332. The sixth driving member 2331 may only include a linear motor to directly connect the pushing member 2332 to the output shaft of the linear motor so that it moves in the third direction c along with the output shaft of the linear motor; or, the sixth driving member 2331 may also include a rotating motor and a screw nut to connect the screw to the output shaft of the rotating motor and connect the pushing member 2332 to the nut. The rotating motor can drive the screw to rotate so that the nut moves along the length direction of the screw, and then drive the pushing member 2332 to move in the third direction c through the nut.

[0084] With such a design, when the sixth driving member 2331 drives the pushing member 2332 to move toward the end plate positioning mechanism 22, the stacked battery module can be pressed in the third direction c by the pushing member 2332 to press the two adjacent groups of battery cells together, while maintaining the pressure of the stacked battery module; when the sixth driving member 2331 drives the pushing member 2332 to move away from the end plate positioning mechanism 22, the pushing member 2332 releases the battery module to facilitate the removal of the stacked battery module.

[0085] See also Figure 5 In one embodiment of the present application, the large-surface pushing mechanism 233 further includes a distance meter 2333 , which is configured to detect the distance between two adjacent groups of battery cells.

[0086] The rangefinder 2333 can detect the distance between two adjacent groups of battery cells and transmit a signal to the control terminal, which controls the sixth driving member 2331 to drive the movement of the pressing member 2332. The rangefinder 2333 can include, but is not limited to, a laser rangefinder 2333, an ultrasonic rangefinder 2333, a contact rangefinder 2333, and an infrared rangefinder 2333.

[0087] This design, by using the rangefinder 2333 to detect the distance between two adjacent groups of battery cells, can accurately control the movement stroke of the sixth driving member 2331 to drive the pushing member 2332, so as to accurately control the clamping force of the pushing member 2332 on the battery module, thereby improving the clamping effect on the battery module.

[0088] See also Figure 2 In one embodiment of the present application, the support frame 10 has a loading end 11 and a unloading end 12 distributed along the third direction c, and the length pushing mechanism 24 can drive the stacking platform 21 to move in the third direction c to switch between the loading end 11 and the unloading end 12.

[0089] The loading end 11 refers to an end of the support frame 10 close to the previous process, and the unloading end 12 refers to an end of the support frame 10 close to the next process.

[0090] With this design, before loading, the stacking platform 21 is first moved to the loading end 11 by the length pushing mechanism 24, and then the end plate positioning mechanism 22 and the battery cell positioning mechanism 23 on the stacking platform 21 are driven to move to the loading end 11, so as to facilitate the placement of the end plate assembly and the battery cell on the stacking platform 21; and before unloading, the stacking platform 21 is moved to the unloading end 12 by the length pushing drum, and then the end plate positioning mechanism 22 and the battery cell positioning mechanism 23 on the stacking platform 21 are driven to move to the unloading end 12, so as to facilitate the removal of the stacked battery modules.

[0091] See also Figure 2In one embodiment of the present application, the stacking tooling 20 is provided with at least two layers, and at least two layers of stacking tooling 20 are staggered in the second direction b. When the upper layer of stacking tooling 20 moves to the loading end 11, the lower layer of stacking tooling 20 moves to the unloading end 12.

[0092] Each layer of the stacking tool 20 can stack one battery module at a time, or at least two battery modules at a time. It is understood that the end plate positioning mechanism 22, the cell positioning mechanism 23, and the length-pushing mechanism 24 of the stacking tool 20 are defined as a stacking unit. The stacking platform 21 of the stacking tool 20 can have one or at least two stacking units. When at least two stacking units are provided, the at least two stacking units can be arranged in a spaced relationship in the first direction a.

[0093] Such a design, which uses at least two layers of stacking tooling 20, can simultaneously unload battery modules on another layer of stacking tooling 20 while loading and stacking on one layer of stacking tooling 20, thereby improving work efficiency.

[0094] See also Figure 2 In one embodiment of the present application, the end plate positioning mechanism 22 and the battery cell positioning mechanism 23 are spaced apart along the third direction c, and the length pushing mechanism 24 is provided on a side of the battery cell positioning mechanism 23 away from the end plate positioning mechanism 22 .

[0095] With this design, the length pushing mechanism 24 can be used to smoothly push the end plate assembly toward the end plate positioning mechanism 22 and the battery cell toward the battery cell positioning mechanism 23, while making the overall structure more compact to achieve the effect of reducing the volume.

[0096] See also Figure 1 In one embodiment of the present application, the battery module stacking device 100 further includes a loading mechanism 30 , which is disposed on one side of the support frame 10 and is configured to transport the end plate assembly and the battery cells to the surface of the stacking table 21 .

[0097] The loading mechanism 30 is used to transport the end plate assembly and the battery cell to the table surface of the stacking table 21. The loading mechanism 30 can be a manipulator, or a structure in which a three-axis moving mechanism and a clamp cooperate. For example, the three-axis moving mechanism can include an X-axis moving mechanism, a Y-axis moving mechanism, and a Z-axis moving mechanism; the X-axis moving mechanism can include an X-axis track, a first slider, and a first drive motor, and the first drive motor drives the first slider to slide along the X-axis track; the Y-axis moving mechanism can include a Y-axis track, a second slider, and a second drive motor, and the Y-axis track is connected to the first slider, and the second drive motor drives the second slider to slide along the Y-axis track; the Z-axis moving mechanism can include a Z-axis track, a third slider, and a third drive motor, and the Z-axis track is connected to the second slider, and the third drive motor drives the third slider to slide along the Z-axis track. Therefore, the clamp can be driven to move in three-dimensional space under the drive of the three-axis moving mechanism, so as to smoothly transport the end plate assembly and the battery cell to the table surface of the stacking table 21 through the clamp.

[0098] With such a design, the loading mechanism 30 can be used to automatically transport the end plate assembly and the battery cells to the table surface of the stacking table 21 to achieve automatic loading.

[0099] See also Figure 1 In one embodiment of the present application, the battery module stacking device 100 further includes a unloading mechanism 40, which is disposed on one side of the support frame 10 and is configured to transport the stacked battery modules from the table surface of the stacking table 21 to the next process.

[0100] The unloading mechanism 40 is used to transport the stacked battery modules from the stacking table 21 to the next process. The unloading mechanism 40 can be a robot arm or a structure composed of a three-axis movement mechanism and a clamping claw. It is understood that the specific structure of the unloading mechanism 40 and the loading mechanism 30 can be the same.

[0101] With such a design, the unloading mechanism 40 can be used to automatically transport the stacked battery modules from the table top of the stacking table 21 to the next process, thereby realizing automatic unloading.

[0102] According to some embodiments of the present application, a battery module stacking device 100 is provided. Figures 1 to 5The stacking steps of the battery module stacking device 100 can be as follows: the loading mechanism 30 grabs the end plate assembly and places it on the table of the stacking table 21; the length pushing mechanism 24 pushes the end plate assembly to the end plate positioning mechanism 22; the positioning member 224 of the end plate positioning mechanism 22 extends into the notch of the end plate to pre-position the end plate in the first direction a and the second direction b; the first centering mechanism 221 positions the battery cell of the end plate assembly in the first direction a, and then centers the end plate assembly in the first direction a to improve the side of the end plate assembly. Flatness; at the same time, the first pressing mechanism 222 and the second pressing mechanism respectively press and position the end plate and the battery cell in the second direction b to press the end plate assembly onto the table surface of the stacking table 21 to improve the bottom flatness of the end plate assembly; the loading mechanism 30 grabs the second group of battery cells and places them on the table surface of the stacking table 21; the length pushing mechanism 24 pushes the second group of battery cells to a position 5mm from the battery cells (first group of battery cells) of the end plate assembly; the second centering mechanism 231 centers the two adjacent groups of battery cells in the first direction a to improve the side planes of the two adjacent groups of battery cells Then, the third pressing mechanism 232 positions the two adjacent groups of battery cells in the second direction b to press the two adjacent groups of battery cells onto the table surface of the stacking platform 21, so that the two adjacent groups of battery cells are tightly attached to the table surface of the stacking platform 21 to improve the flatness of the bottom of the battery cells; then, the large-surface pushing mechanism 233 presses the stacked battery module in the third direction c to press the two adjacent groups of battery cells together; the above steps after grabbing the second group of battery cells are repeated; when a sufficient number of battery cells are stacked, the last group of end plate assemblies is finally placed on the stacking platform 21 , and use the length pushing mechanism 24 to push the last group of end plate assemblies to the position 5mm in front of the previous group of battery cells, so as to use the second centering mechanism 231 and the third pressing mechanism 232 to position the last group of end plate assemblies, and at the same time use the large surface pushing mechanism 233 to press the stacked battery modules, and at the same time maintain the pressure of the stacked battery modules, and finally complete the stacking of the entire battery module; the length pushing mechanism 24 moves the stacking tool 20 from the loading end 11 to the unloading end 12; the unloading mechanism 40 transports the stacked battery modules from the stacking table 21 to the next process.

[0103] The above description is merely an exemplary embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A battery module stacking device, characterized in that: include: Support frame; A stacking tool is provided on the support frame, and the stacking tool includes a stacking table, an end plate positioning mechanism, a battery cell positioning mechanism, and a length pushing mechanism; Wherein, the end plate positioning mechanism is provided on the stacking platform and is configured to position the end plate assembly, wherein the end plate assembly comprises an end plate and at least one battery cell; The battery cell positioning mechanism is provided on the stacking platform and is configured to position two adjacent groups of battery cells and press the stacked battery module; The length pushing mechanism is provided on the stacking platform and is configured to push the end plate assembly toward the end plate positioning mechanism and push the battery cell toward the battery cell positioning mechanism; The end plate positioning mechanism is configured to position the end plate assembly in a first direction and a second direction; The end plate positioning mechanism comprises: a first centering mechanism configured to position the battery cells of the end plate assembly in the first direction; a first pressing mechanism, provided on one side of the first centering mechanism, and configured to position the end plate in the second direction; a second pressing mechanism, provided on a side of the first centering mechanism away from the first pressing mechanism, and configured to position the battery cells of the end plate assembly in the second direction; A positioning member is provided below the first centering mechanism and is configured to be inserted into the notch of the end plate; the positioning member can be extended and retracted in the second direction; when the positioning member is extended in the second direction, it can be inserted into the notch of the end plate; when the positioning member is retracted in the second direction, it can be removed from the notch of the end plate; when the length pushing mechanism pushes the end plate assembly toward the end plate positioning mechanism, the positioning member extends and is inserted into the notch of the end plate to pre-position the end plate in the first direction and the second direction; and the end plate assembly is re-positioned by the first centering mechanism, the first clamping mechanism and the second clamping mechanism.

2. The battery module stacking device according to claim 1, wherein: The battery cell positioning mechanism is configured to position two adjacent groups of battery cells in a first direction and a second direction, and to compress the stacked battery modules in a third direction; The length pushing mechanism is configured to push the end plate assembly and the battery core in the third direction; The first direction, the second direction and the third direction are arranged at an angle to each other.

3. The battery module stacking device according to claim 1, wherein: The first centering mechanism includes a first driving member and two first baffles arranged opposite to each other, wherein the first baffles are transmission-connected to the first driving member, and the first driving member drives the two first baffles to move toward or away from each other to clamp or release the battery cells of the end plate assembly in the first direction; And / or, the first pressing mechanism includes a second driving member and a first pressing member, the first pressing member is transmission-connected to the second driving member, and the second driving member drives the first pressing member to rise and fall, so as to press or release the end plate in the second direction; And / or, the second clamping mechanism includes a third driving member and a second clamping member, the second clamping member is transmission-connected to the third driving member, and the third driving member drives the second clamping member to rise and fall to clamp or release the battery cell of the end plate assembly in the second direction.

4. The battery module stacking device according to claim 2, wherein: The battery core positioning mechanism includes: a second centering mechanism, configured to position two adjacent groups of battery cells in the first direction; a third pressing mechanism, provided on one side of the second centering mechanism, and configured to position two adjacent groups of battery cells in the second direction; The large-surface pushing mechanism is provided on one side of the second centering mechanism and is configured to press the stacked battery modules in the third direction.

5. The battery module stacking device according to claim 4, characterized in that: The second centering mechanism includes a fourth driving member and two oppositely arranged second baffles, the second baffles being transmission-connected to the fourth driving member, and the fourth driving member driving the two second baffles to move closer to or away from each other, so as to clamp or release two adjacent groups of battery cells in the first direction; And / or, the third pressing mechanism includes a fifth driving member and a third pressing member, the third pressing member is transmission-connected to the fifth driving member, and the fifth driving member drives the third pressing member to rise and fall, thereby pressing or releasing two adjacent groups of battery cells in the second direction; And / or, the large-surface pushing mechanism includes a sixth driving member and a pushing member, the pushing member is transmission-connected to the sixth driving member, and the sixth driving member drives the pushing member to move toward the end plate positioning mechanism to compress the stacked battery modules in the third direction.

6. The battery module stacking device according to claim 5, characterized in that: The large-surface pushing mechanism further includes a distance meter, which is configured to detect the distance between two adjacent groups of battery cells.

7. The battery module stacking device according to any one of claims 1 to 6, characterized in that: The support frame has a loading end and a unloading end distributed along a third direction, and the length pushing mechanism can drive the stacking platform to move in the third direction to switch between the loading end and the unloading end.

8. The battery module stacking device according to claim 7, wherein: The stacking tooling is provided with at least two layers, and the at least two layers of the stacking tooling are staggered in the second direction. When the stacking tooling of the upper layer moves to the loading end, the stacking tooling of the lower layer moves to the unloading end.

9. The battery module stacking device according to any one of claims 1 to 6, characterized in that: The end plate positioning mechanism and the battery cell positioning mechanism are spaced apart and distributed along the third direction, and the length pushing mechanism is arranged on a side of the battery cell positioning mechanism away from the end plate positioning mechanism.

10. The battery module stacking device according to any one of claims 1 to 6, characterized in that: The battery module stacking device further includes a loading mechanism, which is provided on one side of the support frame and is configured to transport the end plate assembly and the battery cells to the table of the stacking table; And / or, the battery module stacking equipment further includes a blanking mechanism, which is disposed on one side of the support frame and is configured to transport the stacked battery modules from the table top of the stacking table to the next process.

Images