An assembling device of a battery module

Abstract

The application relates to the battery technical field, and provides an assembling device of a battery module, which comprises a base, a first positioning structure and a second positioning structure, the base is provided with an assembling area, the first positioning structure is movably arranged at least in part and is configured to limit the size of the assembling area in a first direction, and the second positioning structure is configured to limit the size of the assembling area on at least one side in a second direction. The assembling device in the embodiment can adjust the size of the assembling area in a certain range, so that the assembling device of the battery module can adjust the size of the assembling area according to different battery modules, thereby improving the compatibility of the assembling device and expanding the application range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to an assembling device of a battery module. BACKGROUND

[0002] The stability in the assembling process of a power battery module and the control precision of the dimensional tolerance of the power battery module in the assembling process are important indexes affecting the performance of the power battery module. In order to realize the assembling of the power battery module, a special assembling device of the power battery module is designed in the related technology, and the special assembling device is generally only applicable to the assembling of the power battery module with a fixed size. When the size of the power battery module changes, the special assembling device cannot be applied, resulting in low compatibility and small application range of the special assembling device. SUMMARY

[0003] The present application provides an assembling device of a battery module, which has high compatibility and wide application range.

[0004] An aspect of the present application provides an assembling device of a battery module, comprising:

[0005] a base having an assembling area;

[0006] a first positioning structure being at least partially movably arranged and being configured to limit the size of the assembling area in a first direction;

[0007] and a second positioning structure being configured to limit the size of the assembling area on one side in a second direction.

[0008] The assembling device of the battery module in the embodiment of the present application comprises a base, a first positioning structure and a second positioning structure, wherein the base has an assembling area, each cell unit in the battery module can be stacked in the assembling area, the first positioning structure limits the size of the assembling area in a first direction, the second positioning structure at least limits the size of the assembling area on one side in a second direction, the combination of the first positioning structure and the second positioning structure at least limits the size of the assembling area within a certain range, and based on the characteristic that the first positioning structure is movably arranged, the size of the assembling area can also be adjusted within a certain range, so that the assembling device of the battery module can adjust the size of the assembling area according to different battery modules, thereby improving the compatibility of the assembling device and expanding the application range thereof.

[0009] In a possible implementation manner, the second positioning structure is arranged on one side in the second direction and is fixedly arranged, and the assembling area surrounded by the first positioning structure and the second positioning structure has a free end.

[0010] In a possible implementation, the first direction and the second direction are perpendicular to each other and are in the same plane.

[0011] In a possible implementation, the first positioning structure includes at least one set of abutting pressing plates that are parallel to each other and can move closer to or farther away from each other in the first direction, and the second positioning structure includes a fixedly arranged positioning plate that is perpendicular to the abutting pressing plates.

[0012] In a possible implementation, the first positioning structure further includes an abutting driving unit capable of outputting linear motion, and the abutting pressing plates are mounted on the output end of the abutting driving unit.

[0013] In a possible implementation, the assembling device further includes a pressing structure arranged in the second direction and opposite to the second positioning structure, and the pressing structure is capable of limiting the size of the assembling area in the second direction together with the second positioning structure.

[0014] In a possible implementation, the pressing structure includes:

[0015] a pressing member having a mating surface matched with the battery module;

[0016] and a pressing driving mechanism, the pressing member being connected to the pressing driving mechanism and being capable of moving towards the second positioning structure under the driving of the pressing driving mechanism.

[0017] In a possible implementation, the pressing driving mechanism includes:

[0018] a pair of first lead screws that are parallel to each other;

[0019] and a first lead screw driving assembly connected to the pair of first lead screws and capable of driving the pair of first lead screws to rotate in the same direction, the pressing member being mounted on the first lead screw and being capable of moving along the first lead screw.

[0020] In a possible implementation, the first lead screw driving assembly includes:

[0021] a first driving unit;

[0022] and a reverser assembly having at least two output ends capable of outputting rotation in the same direction, the first driving unit being connected to the pair of first lead screws via the reverser assembly and the first lead screws being connected to the output ends.

[0023] In a possible implementation, the reverser assembly includes:

[0024] The first commutator is connected with the first driving unit and comprises a first input end and at least two first output ends, the first input end is connected with the first driving unit, and one of the two first output ends is connected with one of the pair of first lead screws;

[0025] The second commutator comprises a second input end and a second output end, the second input end is connected with the other first output end of the first commutator, and the second output end is connected with the other of the pair of first lead screws;

[0026] The second input end is connected with the other first output end of the first commutator through the connecting column.

[0027] In a possible implementation, the assembling device further comprises a pressing structure arranged in the second direction and capable of applying a pressing force to the battery module under the action of the pressing structure.

[0028] In a possible implementation, the pressing structure comprises:

[0029] a pair of oppositely arranged pressing mechanisms having a matching surface matched with the pull plate;

[0030] and a pressing driving mechanism, the pair of pressing mechanisms are connected with the pressing driving mechanism and capable of moving close to or away from each other under the driving of the pressing driving mechanism.

[0031] In a possible implementation, the pressing mechanism comprises:

[0032] a pressing block;

[0033] and a pressing force adjusting assembly, the pressing block is mounted on the pressing force adjusting assembly, and the pressing force adjusting assembly is configured to adjust the pressing force of the pressing block on the pull plate.

[0034] In a possible implementation, the pressing force adjusting assembly comprises:

[0035] a mounting plate;

[0036] a guide column mounted on the mounting plate, the pressing block is slidingly mounted on the guide column;

[0037] and a pressure sensor mounted on the guide column and located between the pressing block and the mounting plate.

[0038] In a possible implementation, the pressing force adjusting assembly further comprises an elastic member connected between the pressure sensor and the pressing block.

[0039] In a possible implementation, the pressing block comprises a first pressing portion and a second pressing portion, and the first pressing portion and the second pressing portion are connected vertically.

[0040] In a possible implementation, the pressing driving mechanism comprises:

[0041] a pair of second lead screws arranged in parallel to each other;

[0042] and a second lead screw driving assembly connected to the pair of second lead screws and capable of driving the pair of second lead screws to rotate in the same direction, the pressing mechanism being mounted on the second lead screw and capable of moving along the second lead screw.

[0043] In a possible implementation, the second lead screw driving assembly comprises:

[0044] a second driving unit;

[0045] and a synchronous belt transmission assembly, a synchronous belt in the synchronous belt transmission assembly being sleeved on the outer periphery of the pair of second lead screws, the second driving unit being capable of driving the pair of second lead screws to rotate in the same direction via the synchronous belt transmission assembly.

[0046] In a possible implementation, the pressing structure further comprises a dust removal mechanism arranged on the pressing mechanism.

[0047] In a possible implementation, the dust removal mechanism comprises a dust removal cover having a cover area and an extension pipe connected to the dust removal cover and in communication with the cover area. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0049] Figure 1 a structure schematic diagram of an assembling device according to an embodiment of the present application is shown;

[0050] Figure 2 a structure schematic diagram of a pressing structure according to an embodiment of the present application is shown;

[0051] Figure 3 a structure schematic diagram of a pressing structure according to an embodiment of the present application is shown;

[0052] Figure 4A local enlarged view of the local part of the C is shown. Figure 3 A local enlarged view of the local part of the C is shown.

[0053] Reference signs:

[0054] Base; 101-assembly area; 102-free end;

[0055] First positioning structure; 210-abutting pressing plate; 220-abutting driving unit;

[0056] Second positioning structure; 310-positioning plate;

[0057] Pressing structure; 410-pressing piece; 420-pressing driving mechanism; 421-first screw rod; 422-first screw rod driving assembly; 423-guide rail; 424-sliding block; 425-pressing back plate; 4221-first driving unit; 4222-commutator assembly; 4222a-first commutator; 4222b-second commutator; 4222c-connection column; 4222a1-first input end; 4222a2-first output end; 4222b1-second input end; 4222b2-second output end;

[0058] Pressing structure; 410-pressing piece; 420-pressing driving mechanism; 421-first screw rod; 422-first screw rod driving assembly; 423-guide rail; 424-sliding block; 425-pressing back plate; 4221-first driving unit; 4222-commutator assembly; 4222a-first commutator; 4222b-second commutator; 4222c-connection column; 4222a1-first input end; 4222a2-first output end; 4222b1-second input end; 4222b2-second output end;

[0059] Dust removal mechanism; 610-dust removal cover; 620- extension pipe;

[0060] Control system;

[0061] Alarm system;

[0062] 10-battery module; 11-cell unit; 12-pull plate. DETAILED DESCRIPTION

[0063] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0064] The assembly of the power battery module needs to rely on the assembly device for auxiliary positioning or size control. The main role of the auxiliary positioning is that, when the battery module is welded, glued and the like, the position of the power battery module is fixed based on the positioning of the assembly device, so as to ensure the smooth progress of the above processes. The main role of the size control is that, through the cooperation between mechanisms, the sizes of the power battery module are within the tolerance range, which is beneficial to improving the overall performance of the power battery module.

[0065] In the application of the assembly device to complete the assembly of the power battery module, the key step is to control the distance between each cell unit of the battery module and the overall size of the power battery module composed of each cell unit. In the related art, when the power battery module is assembled, the assembly needs to be completed by means of a tray or other mechanisms with specific limiting functions arranged in the assembly device. The tray and the mechanisms with specific limiting functions are designed to accommodate or limit the power battery module of a specific size. In the assembly process, each cell unit needs to be placed on a special tray or other mechanism first, and then the battery module is stacked based on the specifications and sizes of the tray or other mechanism. The overall size of the power battery module is restricted by the tray or other mechanism, and a tray or other mechanism is only suitable for the assembly of one type of power battery module, resulting in low compatibility and small application range of the assembly device using the tray or other structure.

[0066] Based on the above status and defects of the assembly device, the embodiment of the present application provides an assembly device for a battery module. The assembly device is formed with an assembly area, and the battery module can be assembled in the assembly area or can be limited in the assembly area, so as to realize welding, gluing and the like of the battery module. The assembly device can adjust the size of the assembly area through the cooperation between structures, so as to adapt to the assembly of more battery modules.

[0067] In the embodiment of the present application, each structure in the assembly device can be movably arranged or fixedly arranged, but it needs to be understood that at least part of the structures can be movable. These movably arranged structures can adjust the size of the assembly area. It needs to be explained that each structure in the assembly device can independently adjust the size of the assembly area, and each structure or part of each structure can be matched with other functional mechanisms to adjust the size of the assembly area.

[0068] In the embodiment of the present application, based on the design that the assembly area in the assembly device is adjustable, the assembly device can adapt to more types of battery modules, and has the advantages of high compatibility and wide application range.

[0069] Figure 1 A structure schematic diagram of an assembly device according to an embodiment of the present application is shown. In the embodiment of the present application, please refer toFigure 1 The assembling device comprises a base 100, a first positioning structure 200, and a second positioning structure 300.

[0070] The base 100 serves as a support structure of the assembling device, which can be designed in the form of a box, i.e., the base 100 can be a box with a receiving cavity, the top of the box can provide a working space for assembling the battery module 10, for example, the assembling area 101 can be formed on the top of the box, and the receiving cavity of the box can accommodate other parts of the assembling device, for example, the control system 700, the alarm system 800 and other related hardware and circuit parts of the assembling device can be arranged in the receiving cavity. The base 100 in the form of a box can protect the structures and parts accommodated in the receiving cavity. In view of heat dissipation and other aspects, heat dissipation holes, heat dissipation fans and other structures can be provided at appropriate positions of the box.

[0071] In addition to the box form, the base 100 can also be designed in the form of a support frame, i.e., the base 100 is formed by splicing a plurality of support rods, which can effectively control the manufacturing cost of the base 100. The top of the support frame is designed with a platform, and the assembling area 101 can be formed on the platform.

[0072] In other embodiments, the base 100 can also adopt more structural forms, which are not limited in the present application.

[0073] The assembling area 101 on the base 100 is the place for assembling the battery module 10, and also the place for assisting in positioning and controlling the size of the battery module 10. Each cell unit 11 in the battery module 10 can be placed in the assembling area 101 and assembled into the battery module 10 in the assembling area 101. Other devices can be used to realize welding, gluing and other operations on the battery module 10 during the assembling process.

[0074] The first positioning structure 200 is at least partially movably arranged, and the first positioning structure 200 is configured to limit the size of the assembling area 101 in the first direction.

[0075] In the above description, the first positioning structure 200 is at least partially movably arranged to include at least two layers of content. The first layer of content is that the first positioning structure 200 belongs to an integral structure, a part of which is movable and the movable direction is the first direction. After being moved to a certain position, the movable part can be fixed, so that a size-adjustable area is formed between the movable part and the non-movable part of the first positioning structure 200, thereby realizing the limitation of the size of the assembly area 101 in the first direction. The second layer of content is that the first positioning structure 200 includes a plurality of independent components. Taking two components as an example, both of the two components can be movably arranged, or one of the two components can be movably arranged and the other component can be fixedly arranged. The movably arranged component can be fixed. As a result, a size-adjustable area is formed between the two components, thereby realizing the limitation of the size of the assembly area 101 in the first direction.

[0076] It can be understood that in the above description, "limitation" at least includes two meanings. One is to limit the size of the assembly area 101 in the first direction to have a fixed value, and the other is to change the fixed value. The combination of the two meanings realizes the size adjustment of the assembly area 101 in the first direction.

[0077] The second positioning structure 300 is configured to at least limit the size of the assembly area 101 in the second direction. The second positioning structure 300 is movably arranged in a relatively flexible manner, which can be fixedly arranged or movably arranged. The purpose is to realize the limitation in other directions on the basis of the limitation of the assembly area 101 in the first direction by the first positioning structure 200. The limitation in other directions can be a surrounding limitation or an open limitation.

[0078] Here, the surrounding limitation refers to that the second positioning structure 300 is similar to the first positioning structure 200 described above, which limits the assembly area 101 on both sides in the second direction, that is, makes the assembly area 101 have a fixed value in the second direction. Here, "limitation" at least includes two meanings. One is to limit the size of the assembly area 101 in the second direction to have a fixed value, and the other is to change the fixed value. The combination of the two meanings realizes the size adjustment of the assembly area 101 in the second direction. It can be understood that the first positioning structure 200 adopts the surrounding limitation.

[0079] The open restriction here means that the second positioning structure 300 can only restrict one side in the second direction, and the other side in the second direction is in an open state, and the open restriction provides a basis for the intervention of the functional mechanism. It should be noted that the second direction can be defined as follows: the second direction has a front side and a rear side, similar to the front and rear in the direction of travel, when the assembly area 101 is restricted in the second direction, if the front side and the rear side are both restricted, that is, the front side and the rear side can have a fixed value between them, which is a surrounding restriction, if only one of the front side and the rear side is restricted, which is an open restriction, and on the basis of the open restriction, combined with the restriction that the functional mechanism can provide, it can be changed to a surrounding restriction.

[0080] Therefore, in the embodiment of the present application, one of the purposes of the setting mode of the second positioning structure 300 is to provide a basis for the intervention of the functional mechanism, that is, when the second positioning structure 300 adopts an open restriction, the side in the second direction that is not restricted can be realized through the functional mechanism. For example, the functional mechanism can be the pressing structure 400 described below.

[0081] The assembly device of the battery module 10 in the embodiment of the present application includes a base 100, a first positioning structure 200, and a second positioning structure 300, wherein the base 100 has an assembly area 101, each battery cell unit 11 in the battery module 10 can be stacked in the assembly area 101, the first positioning structure 200 restricts the size of the assembly area 101 in the first direction, and the second positioning structure 300 can at least restrict the size of the assembly area 101 on one side in the second direction. The combination of the first positioning structure 200 and the second positioning structure 300 can at least restrict the size of the assembly area 101 within a certain range, and based on the characteristics of the active setting of the first positioning structure 200, the size of the assembly area 101 can also be adjusted within a certain range, so that the assembly device of the battery module 10 can adjust the size of the assembly area 101 according to different power batteries, thereby improving the compatibility of the assembly device and expanding its application range.

[0082] In the embodiment of the present application, it can be understood that through the restriction of the first positioning structure 200 on the assembly area 101 in the first direction and the restriction of the second positioning structure 300 on the assembly area 101 in the second direction, the auxiliary positioning effect and the size control effect of the assembly area 101 on the battery module 10 can be realized. The first direction and the second direction are not limited, and according to the type of different battery modules 10, the first direction and the second direction can be adjusted accordingly.

[0083] In some embodiments, please refer to Figure 1 , the first direction and the second direction are perpendicular to each other, and the first direction and the second direction are in the same plane, and in Figure 1In the embodiment, the first direction is the X direction and the second direction is the Y direction. For the battery module 10, the first direction is the stacking direction of the battery cell units 11 and the second direction is the length direction of the battery cell units 11. It can be understood that the first direction and the second direction are set as described above, and the assembly device can be used to assemble the square battery module 10.

[0084] Specifically, each battery cell unit 11 constituting the battery module 10 can be stacked in the Y direction in sequence, and the two ends of the battery cell unit 11 in the length direction, i.e., in the X direction, can be limited by the first positioning structure 200, and the Y direction can be limited by the second positioning structure 300. The assembly of the battery module 10 can be achieved by the combined action of the first positioning structure 200 and the second positioning structure 300, which can play the auxiliary positioning function or the size control function of the battery module 10.

[0085] In combination with the foregoing description, when the first direction and the second direction are adjusted, or when the first direction and the second direction are used in other combinations, the assembly device can also be used to assemble other types of battery modules 10.

[0086] In the following embodiments, for the purpose of simplifying the description and understanding, the following embodiments will take the square battery module as an example to describe the structures and functional mechanisms of the assembly device in detail. In the following description, the structures mainly refer to the first positioning structure 200 and the second positioning structure 300, and the functional mechanisms mainly refer to the pressing structure 400, the pressing structure 500, the dust removal mechanism 600, etc.

[0087] In some embodiments, please refer to Figure 1 The second positioning structure 300 is arranged on one side in the second direction and is fixedly arranged. The assembly area 101 surrounded by the first positioning structure 200 and the second positioning structure 300 has a free end 102.

[0088] In combination with the foregoing description, the second positioning structure 300 adopts an open limiting mode. The second positioning structure 300 is fixedly arranged, and can surround the assembly area 101 with the first positioning structure 200 to form a free end 102. For the free end 102, it can provide a basis for the intervention of the functional mechanism.

[0089] In the above embodiment, the arrangement of the second positioning structure 300 can simplify its structural composition, which is equivalent to simplifying the combination of the first positioning structure 200 and the second positioning structure 300. By reserving the free end 102, the functional mechanism can be conveniently intervened, thereby realizing the auxiliary positioning or size control function of the battery module 10. At the same time, the functional mechanism can also realize the function set by the pressing structure 400 in the following embodiment, for example, the pressing function. The open restriction mode of the second positioning structure 300 breaks the traditional all-around restriction mode, which can make the assembly device more compact in structure and more concentrated in function realization.

[0090] In some embodiments, please refer to Figure 1 The first positioning structure 200 includes at least one set of abutting pressing plates 210 which are parallel to each other and can move closer to or away from each other in the first direction, and the second positioning structure 300 includes a fixedly arranged positioning plate 310 which is perpendicular to the abutting pressing plates 210.

[0091] For a square battery module, the abutting pressing plates 210 and the positioning plate 310 can form an assembly area 101 in a substantially rectangular structure, and one side of the assembly area 101 reserves the free end 102. During the movement of the abutting pressing plates 210 closer to or away from each other, the size of the assembly area 101 can be adjusted.

[0092] It should be noted that the abutting pressing plates 210 can abut on both sides of the battery module 10 in the first direction (i.e., the X direction). According to the definition of the arrangement direction of the battery cell unit 11 in the foregoing, the two sides of the battery module 10 in the first direction generally need to be designed as a tab group composed of multiple positive and negative tabs. Therefore, for the abutting pressing plates 210, an avoidance area should be reserved for the tab group to pass through. In addition, to ensure the abutting effect, the rest of the abutting pressing plates 210 can be designed as a flat plate. Of course, in other embodiments, the abutting pressing plates 210 can also be designed in other shapes. The positioning plate 310 is arranged in the second direction (i.e., the Y direction). According to the definition of the arrangement direction of the battery cell unit 11 in the foregoing, the two sides of the battery module 10 in the second direction are the areas where the end plates of the battery module 10 are located. Therefore, for the positioning plate 310, it needs to be designed to match the structure of the end plate, and a concave-convex structure can be arranged on the positioning plate 310 to cooperate with the corresponding structure on the end plate. In other embodiments, the positioning plate 310 can also be designed in other shapes.

[0093] In the above embodiment, the abutting pressing plates 210 and the positioning plate 310 are combined to form the assembly area 101, which is simple in structure, convenient in arrangement, and has good stability.

[0094] For the above-mentioned embodiments, the execution of the function of the first positioning structure 200 needs to rely on the movement of the abutting pressing plate 210, and the execution of the function of the second positioning structure 300 needs to rely on the fixed arrangement of the positioning plate 310. It can be understood that, in order to realize the movement of the abutting pressing plate 210, the abutting pressing plate 210 can be mounted on a mechanism capable of outputting linear motion, and in order to realize the fixed arrangement of the positioning plate 310, the positioning plate 310 can be fixedly mounted on the base 100. The mounting can be in a mechanical connection manner, for example, assembled by screws, or in a welding manner, or by cooperation or clamping action between structures.

[0095] In order to realize the mounting of the abutting pressing plate 210, in some embodiments, please refer to Figure 1 The first positioning structure 200 further comprises an abutting driving unit 220 capable of outputting linear motion, and the abutting pressing plate 210 is mounted on the output end of the abutting driving unit 220.

[0096] Therefore, the movement of the abutting pressing plate 210 in the first direction can be driven by starting the abutting driving unit 220, which is simple in structure and can improve the stability of the abutting pressing plate 210 during movement. It can be understood that one abutting driving unit 220 can be provided for each abutting pressing plate 210, or a plurality of abutting pressing plates 210 can be connected to the same abutting driving unit 220. The abutting driving unit 220 can be arranged on one side of the first direction, or on both sides of the first direction.

[0097] In some specific embodiments, the abutting driving unit 220 can be a linear motor, a pneumatic cylinder, an oil cylinder, etc. Taking the pneumatic cylinder as an example, the abutting pressing plate 210 is mounted on the cylinder shaft of the pneumatic cylinder. In order to improve the mounting reliability, a connecting structure such as a connecting plate or a connecting block can be designed on the cylinder shaft, and then the abutting pressing plate 210 is connected to the connecting structure.

[0098] In the foregoing embodiments, in order to facilitate the support of the battery module 10, the abutting pressing plate 210 and the positioning plate 310 can be designed in an L shape, i.e., the abutting pressing plate 210 and the positioning plate 310 have two vertical side walls, one of which can abut or be positioned on the corresponding part on the battery module 10, and the other of which can be supported below the battery module 10, thereby supporting the battery module 10.

[0099] In addition, it can be understood that, in the assembly of the battery module 10, Figure 1The shown orientation is an example, and the battery module 10 needs to be operated on both the upper and lower sides, so for the abutting pressing plate 210, enough space should be reserved between the two abutting pressing plates 210 to operate on the upper or lower side of the battery module 10, such as setting the pull plate 12 for the battery module 10 as will be described below.

[0100] In addition to the first positioning structure 200 and the second positioning structure 300 described above, the first positioning structure 200 and the second positioning structure 300 can also be deformed, for example, they can be designed as a foldable structure, which can be folded up to limit the assembly area 101 when the battery module 10 needs to be assembled, and after the assembly is completed, it can be folded down and stored in the top of the base 100 or the inside of the base 100.

[0101] Figure 2 A structural schematic diagram of a pressing structure according to an embodiment of the present application is shown.

[0102] In some embodiments, please refer to Figure 2 The assembly device includes a pressing structure 400 arranged in the second direction and opposite to the second positioning structure 300, and the pressing structure 400 can limit the size of the assembly area 101 in the second direction together with the second positioning structure 300.

[0103] In the above embodiment, the pressing structure 400 as a functional mechanism can limit the size of the assembly area 101 together with the second positioning structure 300. At the same time, the pressing structure 400 can also exert a pressing force on the battery module 10 to control the size of the battery module 10 in the Y direction.

[0104] In this embodiment, the second positioning structure 300 can adopt the fixedly arranged positioning plate 310 described above, and when the pressing structure 400 acts, the battery module 10 can be made to move towards the positioning plate 310 in the Y direction under the action of the pressing force with the positioning plate 310 as a reference. Of course, other types of second positioning structures 300 can also be selected to form a combination with the pressing structure 400.

[0105] For the battery module 10, a plurality of battery cell units 11 are stacked, and a shape-unfixed substance such as aerogel or structural glue (AB glue) is arranged between the battery cell units 11, which can easily cause the size of the battery module 10 composed of the plurality of battery cell units 11 to not reach the set size requirement after the stacking is completed. At this time, the battery module 10 needs to be further compressed so that the size of the battery module 10 reaches the design requirement. The above process is the restraining operation of the battery module 10. In the embodiment of the present application, the restraining operation can be completed by the combination of the pressing structure 400 and the second positioning structure 300. The process is generally as follows: the size of the first positioning structure 200 along the X direction is adjusted, the second positioning structure 300 is fixed, then the battery cell units 11 and the related components of the battery module 10, such as end plates, are sequentially placed into the first positioning structure 200 and tightly attached to the second positioning structure 300, then the pressing structure 400 is controlled to apply a pressing force to the battery module 10 and keep for a period of time, and then the restraining operation is completed. In addition, after the first positioning structure 200, the second positioning structure 300 and the pressing structure 400 limit the battery module 10 in the assembly area 101, the battery module 10 can also be subjected to a gluing operation. When the gluing operation is performed, the assembly device needs to be moved to the corresponding gluing station.

[0106] In some embodiments, referring to Figure 2 , the pressing structure 400 includes a pressing member 410 and a pressing driving mechanism 420. The pressing member 410 has a matching surface matched with the battery module 10. The pressing member 410 is connected to the pressing driving mechanism 420 and moves towards the second positioning structure 300 under the driving of the pressing driving mechanism 420.

[0107] The pressing member 410 can directly act on the end plate of the battery module 10. The end plate is arranged on both sides of the battery module 10 along the Y direction. In order to ensure the transmission effect of the force, the pressing member 410 is designed to have a matching surface that can match the end plate, which can effectively increase the contact area between the two, thereby improving the reliability of the assembly relationship. The pressing member 410 moves towards the second positioning structure 300 under the driving of the pressing driving mechanism 420, which can realize the above restraining operation and also realize the limitation and positioning of the battery module 10.

[0108] In some specific embodiments, the pressing member 410 can be made of a metal material with high hardness and strength. Of course, in order to facilitate the smooth progress of the restraining operation and not to damage the battery module 10 due to the high hardness of the pressing member 410, the pressing member 410 can be made of a material with moderate hardness such as copper.

[0109] In some embodiments, referring to Figure 2The pressing driving mechanism 420 comprises a pair of first lead screws 421 parallel to each other and a first lead screw driving assembly 422 connected to the pair of first lead screws 421 and capable of driving the pair of first lead screws 421 to rotate in the same direction. The pressing member 410 is mounted on the first lead screws 421 and is capable of moving along the first lead screws 421.

[0110] The first lead screws 421 can form the movement track of the pressing member 410. By designing the transmission matching relationship between the pressing member 410 and the first lead screws 421, the pressing member 410 can move along the first lead screws 421 when the first lead screws 421 rotate.

[0111] In the above embodiment, the pressing driving mechanism 420 is designed in the manner that the rotation of the first lead screws 421 is converted into the movement of the pressing member 410. It can be understood that in this embodiment, the first lead screws 421 can be ball screws which are assembled with the pressing member 410 in the threaded connection manner. During the rotation of the first lead screws 421, the pressing member 410 can move along the first lead screws 421 based on the threaded assembly manner between the first lead screws 421 and the pressing member 410.

[0112] In some embodiments, please refer to Figure 2 The guiding structure is provided on one side of the first lead screws 421 and comprises a guide rail 423 parallel to the first lead screws 421 and a sliding block 424 capable of moving along the guide rail 423. The pressing member 410 is connected to the sliding block 424.

[0113] Thus, the guiding structure is provided between the pressing member 410 and the first lead screws 421, the cooperation between the pressing member 410 and the first lead screws 421 is converted into the cooperation between the guiding structure and the first lead screws 421, the pressing member 410 can be avoided to be processed, the rotation of the first lead screws 421 is first transmitted to the guiding structure and then transmitted to the pressing member 410, the transmission path is lengthened, which is also beneficial to reduce the vibration and improve the stability of the movement of the pressing member 410.

[0114] In some embodiments, in order to further improve the stability of the movement of the pressing member 410 along the first lead screws 421, a smooth guide rod can be further provided on one side of the first lead screws 421. The guide rod is parallel to the first lead screws 421 and can guide the movement of the pressing member 410.

[0115] In some embodiments, the pressing driving mechanism 420 can also be provided with more pairs of first lead screws 421, which can also play a role in improving the stability of the movement.

[0116] In some embodiments, please refer to Figure 2The guiding structure is further provided with a pressing back plate 425, and the pressing member 410 is installed on the pressing back plate 425. The pressing back plate 425 has a gantry structure, and the installation of the pressing member 410 on the pressing back plate 425 can improve the stability of the movement of the pressing member 410.

[0117] As an example, the pressing member 410 is detachably installed on the pressing back plate 425, so that the pressing member 410 can be repaired and replaced. As described above, the assembly device in the embodiment of the application can be adapted to the assembly of various types of battery modules 10. Here, the pressing member 410 is designed to be repaired and replaced, which can be matched with the characteristics of the assembly device. When the battery module 10 is assembled by using the assembly device, different pressing members 410 can be matched according to different battery modules 10.

[0118] In some embodiments, referring to Figure 2 The first screw driving assembly 422 includes a first driving unit 4221 and a reversing assembly 4222 having at least two output ends capable of rotating in the same direction. The first driving unit 4221 is connected to a pair of first screws 421 via the reversing assembly 4222, and the first screws 421 are connected to the output ends.

[0119] The first driving unit 4221 is used to provide power to the reversing assembly 4222. The reversing assembly 4222 can switch the power output direction under the action of the first driving unit 4221, so that one first driving unit 4221 can be used to synchronously drive a pair of first screws 421 to rotate in the same direction.

[0120] In some specific embodiments, the first driving unit 4221 can be a stepper motor or a servo motor.

[0121] In some specific embodiments, the reversing assembly 4222 is internally provided with a gear set connected to the first driving unit 4221, for example, the gear set is connected to the output shaft of the stepper motor. The output shaft drives the first gear in the gear set to rotate, and then another second gear having a perpendicular meshing relationship with the first gear is provided. The second gear can rotate, and the switching of the power output direction is also realized.

[0122] It should be noted that the above description of the structure of the reversing assembly 4222 is only for illustration and belongs to a simplified description. In actual design and selection of the reversing assembly 4222, different application scenarios and load requirements need to be considered, for example, a speed reducer or other structure can be arranged between the first driving unit 4221 and the gear set in some reversing assemblies 42222.

[0123] In other embodiments, the first lead screw drive assembly 422 can also be designed separately. For example, a first drive unit 4221 can be provided for each first lead screw 421, and the first drive unit 4221 can directly drive the first lead screw 421 to rotate.

[0124] In some embodiments, please refer to Figure 2 The commutator assembly 4222 includes a first commutator 4222a, a second commutator 4222b, and a connecting post 4222c. The first commutator 4222a is connected to a first drive unit 4221. The first commutator 4222a includes a first input terminal 4222a1 and at least two first output terminals 4222a2. The first input terminal 4222a1 is connected to the first drive unit 4221. One of the two first output terminals 4222a2 is connected to one of a pair of first lead screws 421, and the other of the two first output terminals 4222a2 is connected to the second commutator 4222b. The second commutator 4222b includes a second input terminal 4222b1 and a second output terminal 4222b2. The second input terminal 4222b1 is connected to the first commutator 4222a, and the second output terminal 4222b2 is connected to the other of the pair of first lead screws 421. The connecting post 4222c is connected between the first commutator 4222a and the second commutator 4222b.

[0125] by Figure 1 Taking the orientation shown as an example, the first drive unit 4221 is arranged along the X direction, and its output rotation is based on the Y direction as a virtual axis of rotation. The first input terminal 4222a1 and the first output terminal 4222a2 (output terminal A) of the first commutator 4222a are located on both sides of the first commutator 4222a along the X direction, and the other first output terminal 4222a2 (output terminal B) is arranged along the Y direction. The output terminal B is connected to a first lead screw 421. The second input terminal 4222b1 of the second commutator 4222b is arranged along the X direction and is directly opposite to one of the first output terminals 4222b1 of the first commutator 4222a. The second output terminal 4222b2 of the second commutator 4222b is arranged along the Y direction and is connected to another first lead screw 421. The connecting post 4222c is connected between the output terminal A of the first commutator 4222a and the second input terminal 4222b1 of the second commutator 4222b. After the first drive unit 4221 is started, the first commutator 4222a can output rotational motion at both first output terminals 4222b1. Under the action of the connecting column 4222c, the second input terminal 4222b1 and the second output terminal 4222b2 of the second commutator 4222b can also rotate, so that the output terminal A, the output terminal B, the second input terminal 4222b1 and the second output terminal 4222b2 can rotate at the same speed, and the rotation directions of the output terminal B and the second output terminal 4222b2 are the same, so that the pair of first lead screws 421 can rotate in the same direction.

[0126] The commutator assembly 4222 realizes the unity of the rotation steps of the pair of first lead screws 421 through the cooperation of the first commutator 4222a, the second commutator 4222b and the connecting column 4222c, the transmission is reliable, the precision is high, and the assembly precision of the battery module 10 can be improved.

[0127] In addition to the above, in other embodiments, the press-fit driving mechanism 420 can be designed in the form of a synchronous belt, a linear module, etc. For example, a synchronous belt transmission assembly can be arranged along the Y direction, and a connecting block can be arranged on the synchronous belt. The connecting block can be connected to the press-fit piece 410, and the press-fit piece 410 can move together with the connecting block as the connecting block moves. To improve the movement reliability, guide rods or the like can be arranged on both sides of the synchronous belt. For example, a linear module can be arranged along the Y direction, and the press-fit piece 410 can be installed on the guide rail of the linear module. Starting the linear module can drive the press-fit piece 410 to move along the Y direction.

[0128] So far, the above embodiments have made a detailed introduction to the first positioning structure 200, the second positioning structure 300, the press-fit structure 400 and the cooperation mode between the press-fit structure 400 and the second positioning structure 300. Through the foregoing content and in combination with the description of the accompanying drawings, Figure 2 and Figure 3 , the first positioning structure 200, the second positioning structure 300 and the press-fit structure 400 can realize the stacking, restraining and gluing processes of the battery module 10. These processes can be smoothly performed after the auxiliary positioning and size control of the battery module 10 are performed as described above. In the assembly process of the battery module 10, to prevent the rebound phenomenon of the battery module 10 after being restrained, a pull plate 12 can be arranged on the upper and lower sides of the battery module 10. The pull plate 12 can pull the two ends of the battery module 10 along the Y direction. The back pull force provided by the pull plate 12 can prevent the rebound phenomenon of the battery module 10. In the case of further ensuring the size precision of the battery module 10 by arranging the pull plate 12, the battery module 10 can be subjected to welding and pressing operations.

[0129] Figure 4 A structural schematic diagram of a pressing structure according to an embodiment of the present application is shown; Figure 3 A partial enlarged view of a C part in Figure 3 is shown.

[0130] In some embodiments, please refer to Figure 3 The assembly device further comprises a pressing structure 500 arranged in the second direction and capable of applying a pressing force to the battery module 10 under the action of the press-fit structure 400.

[0131] The aforementioned pressing structure 400 acts on the battery module 10, and in particular, can directly act on the end plate in the battery module 10, and mainly completes the restraint work on the battery module 10. The pressing structure 500 acts on the pull plate 12 and the end plate, and can effectively control the gap between the pull plate 12 and the end plate or the size of the two, facilitating subsequent high-precision welding work.

[0132] In some embodiments, referring to Figure 4 and Figure 3 , the pressing structure 500 includes a pair of oppositely arranged pressing mechanisms 510 and a pressing driving mechanism 520. The pressing mechanism 510 has a matching surface matched with the pull plate 12. The pressing mechanism 510 is connected to the pressing driving mechanism 520 and can approach or move away from each other under the driving of the pressing driving mechanism 520.

[0133] For the battery module 10, the end plates arranged at both ends in the Y direction have the same shape, so the pair of pressing mechanisms 510 can be designed to have the same structure. When pressing the end plate and the pull plate 12, the pair of pressing mechanisms 510 can act on the pull plate 12 in the same way.

[0134] The pressing driving mechanism 520 can act on the pull plate 12 during driving the pressing mechanisms 510 to approach each other. When it is not necessary to continue pressing, the pressing mechanisms 510 can be separated under the driving of the pressing driving mechanism 520.

[0135] When designing the pressing mechanism 510, the matching relationship between the pressing mechanism 510 and the pull plate 12 needs to be considered, such as the design of the matching surface and the design of the pressing force. For example, the contact area between the pressing mechanism 510 and the pull plate 12 can be increased as much as possible, so that the pressing force can be uniformly distributed on the pull plate 12.

[0136] When designing the pressing driving mechanism 520, the stability and transmission accuracy of the pressing driving mechanism 520 on the pressing mechanism 510 need to be considered. It can be understood that the pressing driving mechanism 520 can only drive one pressing mechanism 510 to move, or can drive both pressing mechanisms 510 to move.

[0137] In some embodiments, referring to Figure 4 and Figure 4 , the pressing mechanism 510 includes a pressing block 511 and a pressing force adjusting assembly 512. The pressing block 511 is installed on the pressing force adjusting assembly 512, and the pressing force adjusting assembly 512 is configured to adjust the pressing force of the pressing block 511 on the pull plate 12.

[0138] The pressing force adjusting assembly 512 is constructed here. When the pressing block 511 acts on the pull plate 12, the pressing force adjusting assembly 512 can adjust the pressing effect of the pressing block 511 on the pull plate 12 according to the feedback effect of the force, so that the pressing effect of the pressing block 511 on the pull plate 12 can be controlled within the required range, and damage to the pull plate 12, the battery module 10, etc. can be prevented.

[0139] In some embodiments, please refer to Figure 4 The pressing force adjusting assembly 512 includes a mounting plate 5121, a guide column 5122, and a pressure sensor 5123. The guide column 5122 is installed on the mounting plate 5121, the pressing block 511 is slidingly installed on the guide column 5122, and the pressure sensor 5123 is installed on the guide column 5122 and located between the pressing block 511 and the mounting plate 5121.

[0140] It can be understood that when the pressing block 511 is pressed onto the pull plate 12, the reaction force of the pull plate 12 on the pressing block 511 can act on the pressure sensor 5123, and the pressure sensor 5123 can receive the reaction force information and control the action of the pressing driving mechanism 520 through the control of the control system 700. The reaction force information can be transmitted to the control system 700 of the assembly device. For example, when the pressing force is insufficient, the pressing driving mechanism 520 can be controlled to continue to drive the pressing mechanism 510 to move towards each other, and when the pressing force is too high, the pressing driving mechanism 520 can also be controlled to drive the pressing mechanism 510 to move away from each other. In the above process, when the reaction force is too high, the alarm system 800 can also be used to make an alarm prompt.

[0141] The pressing force adjusting assembly 512 can accurately feedback the pressing force information through the combination of the mounting plate 5121, the guide column 5122, and the pressure sensor 5123, which has a positive effect on maintaining the normal progress of the process and preventing damage to the battery module 10.

[0142] In some embodiments, please refer to Figure 4 The pressing force adjusting assembly 512 can also include an elastic member 5124, which can be a spring, a compression spring, etc. The elastic member 5124 is connected between the pressure sensor 5123 and the pressing block 511.

[0143] The elastic member 5124 is arranged to make the contact between the pressing block 511 and the pull plate 12 a floating contact, which can prolong the service life of the pressing block 511 and the pull plate 12 while maintaining the pressing effect, and can also prevent damage to the pull plate 12 and the battery module 10. It can be understood that, due to the arrangement of the elastic member 5124, the pressing force can be buffered at the initial time when the pressing block 511 contacts the pull plate 12, and the pressing force gradually increases to the required force. Specifically, when the pressing block 511 just contacts the pull plate 12, based on the elastic effect of the elastic member 5124, the pressing block 511 can contact the pull plate 12 in a flexible manner, which can prevent the generation of instantaneous large force between the pull plate 12 and the pressing block 511, and can protect the pull plate 12 and the pressing block 511. Under the further driving of the pressing driving mechanism 520, the pressing block 511 will gradually act on the pull plate 12 with greater pressing force. In summary, under the driving of the pressing driving mechanism 520, based on the arrangement of the elastic member 5124, the action of the pressing block 511 lags behind the mounting plate 5121, so that the pressing block 511 can act on the pull plate 12 in a gradually increasing and soft manner.

[0144] In some embodiments, referring to Figure 3 , the pressing block 511 includes a first pressing portion 5111 and a second pressing portion 5112, and the first pressing portion 5111 and the second pressing portion 5112 are connected vertically.

[0145] The pressing block 511 in the above structure can form an L-shaped pressing surface between the first pressing portion 5111 and the second pressing portion 5112, which can be fitted into the corner of the pull plate 12, thereby increasing the contact area between the pressing block 511 and the pull plate 12, and achieving the purpose of uniform pressing force.

[0146] In some specific embodiments, the pressing block 511 can be made of a metal material with high hardness and strength, of course, in order to facilitate the smooth progress of the welding pressing operation, and also to prevent damage to the pull plate 12 and other structures due to the high hardness of the pressing block 511. The pressing block 511 can be made of copper or other materials with moderate hardness.

[0147] In some embodiments, referring to Figure 3 , the pressing driving mechanism 520 includes a pair of second lead screws 521 parallel to each other and a second lead screw driving assembly 522 connected to the pair of second lead screws 521 and capable of driving the pair of second lead screws 521 to rotate in the same direction, and the pressing mechanism 510 is installed on the second lead screw 521 and can move along the second lead screw 521.

[0148] The second screw rod 521 can form a movement track of the pressing mechanism 510, and by designing the transmission matching relationship between the pressing mechanism 510 and the second screw rod 521, the pressing mechanism 510 can move along the second screw rod 521 when the second screw rod 521 rotates.

[0149] In the above embodiment, the pressing driving mechanism 520 is designed in a manner that the rotation of the second screw rod 521 is converted into the movement of the pressing mechanism 510. It can be understood that in this embodiment, the second screw rod 521 can be a trapezoidal screw rod, and by reasonably designing the positive direction thread of the trapezoidal screw rod, the opposite movement or the back-to-back movement of the pair of pressing mechanisms 510 along the second screw rod 521 can be realized.

[0150] In some embodiments, please refer to Figure 3 To improve the movement stability of the pressing mechanism 510, a guide rod or the like can be arranged on one side of the second screw rod 521, which is arranged in parallel with the second screw rod 521 and plays a guiding role in the movement of the pressing mechanism 510.

[0151] In some embodiments, please refer to Figure 4 The second screw rod driving assembly 522 includes a second driving unit 5221 and a synchronous belt transmission assembly (not shown in the figure), the synchronous belt in the synchronous belt transmission assembly is sleeved on the outer periphery of the pair of second screw rods 521, and the second driving unit 5221 can drive the pair of second screw rods 521 to rotate in the same direction through the synchronous belt transmission assembly.

[0152] Specifically, the second driving unit 5221 is a power input component of the synchronous belt transmission assembly, which can drive the synchronous belt to rotate in the circumferential direction, and by reasonably configuring the force relationship between the synchronous belt and the second screw rod 521, the second screw rod 521 can be driven to rotate in the process of synchronous belt rotation.

[0153] In some specific embodiments, the second driving unit 5221 can be a stepper motor or a servo motor.

[0154] In some embodiments, please refer to Figure 4 The pressing structure 500 further includes a dust removal mechanism 600, which is arranged on the pressing mechanism 510.

[0155] Here, the pressing mechanism 510 for assisting in performing the pressing welding operation and the dust removal mechanism 600 for performing the dust removal operation are designed together in the pressing structure 500, which can effectively simplify the structure of each functional mechanism in the assembly device, and also makes the assembly device more compact in structure.

[0156] Please refer to Figure 4The dust removal mechanism 600 can be arranged on the part of the pressing mechanism 510 that needs to directly contact the pull plate 12, for example, the dust removal mechanism 600 can be directly installed on the aforementioned pressing block 511, so that the dust removal mechanism 600 can be closer to the welding area, facilitating the timely removal of welding slag, dust and the like.

[0157] In some embodiments, referring to ​ The dust removal mechanism 600 includes a dust removal cover 610 having a cover area and an extension pipe 620 connected to the dust removal cover 610 and communicating with the cover area.

[0158] When performing the dust removal operation, the cover area can cover the welding area, so that the welding slag and dust can be gathered into the cover area and then removed through the extension pipe 620.

[0159] In some embodiments, the dust removal cover 610 can be designed to have a converging structure, for example, large outside and small inside, so that the welding slag and dust can be converged into the dust removal cover 610.

[0160] In some embodiments, a plurality of extension pipes 620 can be connected to the dust removal cover 610, and the plurality of extension pipes 620 can enable the welding slag and dust at each position in the dust removal cover 610 to be removed through the extension pipes 620.

[0161] In some embodiments, a plurality of dust removal mechanisms 600 can be arranged on the pressing mechanism 510, and the number thereof can be set according to the arrangement and number of welding positions.

[0162] The battery module 10 involved in the embodiments of the present application can be applied to an electric device such as a vehicle, i.e., can provide electric energy for the electric device such as a vehicle. The vehicle can be a car, a bus, a truck, an electric self-balancing scooter, etc.

[0163] The vehicle can include a vehicle body, an axle and a motor, wherein the battery pack, the axle and the motor can be arranged on the vehicle body. The battery pack can be electrically connected to the motor, the motor can be connected to the axle, and the battery pack can supply power to the motor, so that the motor can rotate, and the motor can drive the axle to rotate in the process of rotating, so that the vehicle can travel.

[0164] The vehicle body can include a vehicle chassis and a vehicle body arranged on the chassis, and the vehicle body can have a passenger compartment, in which a driver seat, a passenger seat, etc. can be arranged, and a driver can sit on the driver seat to operate the vehicle. For example, the vehicle body can also be provided with a steering wheel, a clutch, a brake and other structural members to enable the vehicle to realize complete functions, which are not limited in the present application.

[0165] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0166] In the description of the application, it should be understood that the terms "including" and "having" and any variations thereof used in this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0167] Unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium; it can be the connection or interaction relationship between two elements inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0168] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. An apparatus for assembling a battery module (10), characterized by, The application relates to an assembling device for a battery module (10), which comprises: a base (100) with an assembling area (101); a first positioning structure (200) arranged at least partially movably and configured to limit the size of the assembling area (101) in a first direction; a second positioning structure (300) configured to limit the size of the assembling area (101) on one side in a second direction; and a pressing structure (400) arranged in the second direction and opposite to the second positioning structure (300), which can limit the size of the assembling area (101) in the second direction together with the second positioning structure (300). The assembling device further comprises a pressing structure (500) arranged in the second direction and capable of applying a pressing force to the battery module (10) under the action of the pressing structure (400). The pressing structure (500) comprises: a pair of oppositely arranged pressing mechanisms (510) with a matching surface matched with the pull plate (12); and a pressing driving mechanism (520), and the pair of pressing mechanisms (510) are connected to the pressing driving mechanism (520) and can approach or move away from each other under the driving of the pressing driving mechanism (520).

2. The assembly apparatus of claim 1, wherein, The second positioning structure (300) is arranged on one side in the second direction and is fixedly arranged, and the assembling area (101) surrounded by the first positioning structure (200) and the second positioning structure (300) has a free end (102).

3. The assembly apparatus of claim 1, wherein, The first direction and the second direction are perpendicular to each other and are in the same plane.

4. The assembly apparatus of claim 3, wherein, The first positioning structure (200) comprises at least one set of abutting pressing plates (210) parallel to each other and capable of approaching or moving away from each other in the first direction, and the second positioning structure (300) comprises a fixedly arranged positioning plate (310) perpendicular to the abutting pressing plates (210).

5. The assembly apparatus of claim 4, wherein, The first positioning structure (200) further comprises an abutting driving unit (220) capable of outputting linear motion, and the abutting pressing plates (210) are mounted on the output end of the abutting driving unit (220).

6. The assembly apparatus of claim 1, wherein, The pressing structure (400) comprises: a pressing member (410) with a matching surface matched with the battery module (10); and a pressing driving mechanism (420), and the pressing member (410) is connected to the pressing driving mechanism (420) and can move towards the second positioning structure (300) under the driving of the pressing driving mechanism (420).

7. The assembly apparatus of claim 6, wherein, The pressing driving mechanism (420) comprises: a pair of first lead screws (421) parallel to each other; and a first lead screw driving assembly (422) connected to the pair of first lead screws (421) and capable of driving the pair of first lead screws (421) to rotate in the same direction, and the pressing member (410) is mounted on the first lead screw (421) and can move along the first lead screw (421).

8. The assembly apparatus of claim 7, wherein, The first screw driving assembly (422) comprises: a first driving unit (4221); and a commutator assembly (4222) having at least two output ends capable of outputting rotation in the same direction, the first driving unit (4221) being connected to a pair of the first screws (421) via the commutator assembly (4222) and the first screws (421) being connected to the output ends.

9. The assembly apparatus of claim 8, wherein, The commutator assembly (4222) comprises: a first commutator (4222a) connected with the first driving unit (4221) and comprising a first input end (4222a1) connected with the first driving unit (4221) and at least two first output ends (4222a2), one of the two first output ends (4222a2) being connected with one of a pair of first screws (421); a second commutator (4222b) comprising a second input end (4222b1) connected with the other first output end (4222a2) of the first commutator (4222a) and a second output end (4222b2) connected with the other of the pair of first screws (421); and a connecting column (4222c), the second input end (4222b1) being connected with the other first output end (4222a2) of the first commutator (4222a) via the connecting column (4222c).

10. The assembly apparatus of claim 1, wherein, The pressing mechanism (510) comprises: a pressing block (511); and a pressing force adjusting assembly (512), the pressing block (511) being mounted on the pressing force adjusting assembly (512), the pressing force adjusting assembly (512) being configured to adjust the pressing force of the pressing block (511) on the pull plate (12).

11. The assembly apparatus of claim 10, wherein, The pressing force adjusting assembly (512) comprises: a mounting plate (5121); a guide column (5122) mounted on the mounting plate (5121), the pressing block (511) being slidingly mounted on the guide column (5122); and a pressure sensor (5123) mounted on the guide column (5122) and located between the pressing block (511) and the mounting plate (5121).

12. The assembly apparatus of claim 11, wherein, The pressing force adjusting assembly (512) further comprises an elastic member (5124) connected between the pressure sensor (5123) and the pressing block (511).

13. The assembly apparatus of claim 10, wherein, The pressing block (511) comprises a first pressing portion (5111) and a second pressing portion (5112), the first pressing portion (5111) and the second pressing portion (5112) being connected perpendicularly.

14. The assembly apparatus of claim 1, wherein, The pressing driving mechanism (520) comprises: a pair of second screws (521) parallel to each other; and a second screw driving assembly (522) connected to the pair of second screws (521) and capable of driving the pair of second screws (521) to rotate in the same direction, the pressing mechanism (510) being mounted on the second screw (521) and capable of moving along the second screw (521).

15. The assembly apparatus of claim 14, wherein, The second screw driving assembly (522) comprises: a second driving unit (5221); and a synchronous belt transmission assembly, a synchronous belt in the synchronous belt transmission assembly being sleeved on the outer periphery of the pair of second screws (521), the second driving unit (5221) being capable of driving the pair of second screws (521) to rotate in the same direction via the synchronous belt transmission assembly.

16. The assembly apparatus of any one of claims 1 to 15, wherein, The pressing structure (500) further comprises a dust removal mechanism (600) arranged on the pressing mechanism (510).

17. The assembly apparatus of claim 16, wherein, The dust removal mechanism (600) comprises a dust removal cover (610) having a cover area and an extension pipe (620) connected to the dust removal cover (610) and in communication with the cover area.

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