Pressing mechanism and battery module shaping device

Abstract

The present application discloses a pressing mechanism and a battery module shaping device. The pressing mechanism is used to flatten the top surface of the battery module, and includes: a fixed seat; a plurality of pressing units arranged on the fixed seat along a first direction; and an adjusting mechanism arranged on the fixed seat for adjusting the distance between two adjacent pressing units. In this pressing mechanism, the distance between the pressing units can be adjusted according to different battery modules, improving the compatibility of the battery module shaping device.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing equipment, and particularly relates to a pressing mechanism and a battery module shaping device. Background Art

[0002] Energy conservation and emission reduction are the keys to the sustainable development of the automotive industry. Electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] A battery includes at least one battery module. For batteries with different capacities, the models and quantities of battery modules are different, and the models and quantities of battery cells in the battery module are also different. Therefore, in the production of battery modules, improving the compatibility of production equipment with different battery modules is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] The purpose of this application is to provide a pressing mechanism and a battery module shaping device. This pressing mechanism can be compatible with different models of battery modules.

[0005] In a first aspect, this application provides a pressing mechanism for flattening the top surface of a battery module, including: a fixed seat; a plurality of pressing units arranged on the fixed seat along a first direction; and an adjusting mechanism arranged on the fixed seat for adjusting the distance between adjacent two pressing units.

[0006] In the above solution, since the sizes of battery cells in different models of battery modules are different, correspondingly, the distances between the pressing units should also be changed. By adjusting the distance between adjacent two pressing units through the adjusting mechanism, the pressing mechanism can be used for the processing requirements of different models of battery modules, improving the compatibility of this device.

[0007] In some embodiments, the adjusting mechanism includes a rotating shaft extending along the first direction. A plurality of spiral grooves are arranged on the outer peripheral surface of the rotating shaft, and the spiral grooves spiral around the central axis of the rotating shaft. One end of each pressing unit is embedded in the corresponding spiral groove, and the other end is used to contact the battery cell.

[0008] In the above solution, the pressing unit cooperates with the spiral groove on the rotating shaft. When the rotating shaft rotates, the spiral groove provides the power for the pressing unit to move, achieving the purpose of driving the pressing unit to move.

[0009] In some embodiments, the rotating shaft includes a first section and a second section. At least one first spiral groove is arranged on the outer peripheral surface of the first section, and at least one second spiral groove is arranged on the outer peripheral surface of the second section. The spiral direction of the first spiral groove is opposite to that of the second spiral groove.

[0010] In the above solution, the opposite helix directions of the first helical groove and the second helical groove avoid the situation where a certain helical groove extends too long along the rotating shaft, enabling the number of the first helical groove and the second helical groove to be the same. At the same time, the number of the pressing units that can be controlled by the rotating shaft is increased.

[0011] In some embodiments, the number of the first helical grooves is multiple. Along the axial direction of the rotating shaft and towards the direction away from the second section, the lead of the multiple first helical grooves gradually increases.

[0012] In the above solution, along the axial direction of the rotating shaft and towards the direction away from the second section, the fact that the lead of the multiple first helical grooves gradually increases enables the spacing between all the pressing units cooperating with the first helical grooves to be adjusted.

[0013] In some embodiments, the number of the second helical grooves is multiple. Along the axial direction of the rotating shaft and towards the direction away from the first section, the lead of the multiple second helical grooves gradually increases.

[0014] In the above solution, along the axial direction of the rotating shaft and towards the direction away from the first section, the fact that the lead of the multiple second helical grooves gradually increases enables the spacing between all the pressing units cooperating with the second helical grooves to be adjusted.

[0015] In some embodiments, the first helical groove and the second helical groove are symmetrically arranged with respect to a reference plane. The reference plane is perpendicular to the central axis of the rotating shaft and is located between the first section and the second section.

[0016] In the above solution, when the rotating shaft rotates, due to the same lead of the first helical groove and the second helical groove, the moving speeds and moving distances of the corresponding pressing units are the same, which is convenient for adjustment.

[0017] In some embodiments, the leads of the multiple first helical grooves form a first arithmetic progression, and the leads of the multiple second helical grooves form a second arithmetic progression. The common difference of the first arithmetic progression is d1, and the common difference of the second arithmetic progression is d2. The lead of the first helical groove closest to the reference plane among the multiple first helical grooves is L, satisfying: d1 = d2 = 2L.

[0018] In the above solution, the leads of the first helical groove and the second helical groove respectively form arithmetic progressions, such that when the rotating shaft rotates, when the pressing units cooperating with the first section of the rotating shaft move, the pressing units maintain equal spacing, and when the pressing units cooperating with the second section of the rotating shaft move, the pressing units maintain equal spacing. At the same time, the leads of the first helical groove and the second helical groove are both equal to 2L, enabling the spacing between the pressing units cooperating with the first helical groove to be equal to the spacing between the pressing units cooperating with the second helical groove.

[0019] In some embodiments, the pressing unit includes a body and a cam follower. The cam follower is installed at one end of the body, and the cam follower is in rolling cooperation with the helical groove.

[0020] In the above solution, the cam follower converts the friction between the pressing unit and the spiral groove from sliding friction to rolling friction, reducing the resistance when driving the pressing unit to move, and making the cooperation between the pressing unit and the spiral groove smoother, avoiding jamming between the pressing unit and the spiral groove.

[0021] In some embodiments, the pressing mechanism further includes a first driving member, which is installed on the fixed seat and is used to drive the rotating shaft to rotate.

[0022] In the above solution, the purpose of driving the rotating shaft to rotate is achieved through the first driving member.

[0023] In a second aspect, the present application provides a battery module shaping device, including: a base; a side pressing mechanism, which is movably arranged on the base along a second direction and is used to flatten the side surface of the battery module; the pressing mechanism in the above embodiment, the pressing mechanism is movably arranged on the side pressing mechanism along a third direction and is used to flatten the top surface of the battery module, and the third direction is perpendicular to the second direction.

[0024] In the above solution, the side surface of the battery module is shaped by the side pressing mechanism, and the top surface of the battery module is shaped by the pressing mechanism, so that the shaping of the side surface and the top surface of the battery module can be completed simultaneously, improving the shaping efficiency; the pressing mechanism is integrated into the side pressing mechanism, reducing the complexity of the device.

[0025] In some embodiments, the battery module shaping device further includes: a second driving member, which is installed on the base and is used to drive the side pressing mechanism to move along the second direction; a third driving member, which is installed on the side pressing mechanism and is used to drive the pressing mechanism to move along the third direction.

[0026] In the above solution, the second driving member provides the power for the side pressing mechanism to move and enables the side pressing mechanism to generate pressure on the battery module, and the third driving member provides the power for the pressing mechanism to move and enables each pressing unit to generate pressure on the battery module, achieving the purpose of shaping the top surface and the side surface of the battery module.

[0027] In some embodiments, the second driving member and the side pressing mechanism are respectively arranged on both sides of the base, the base is provided with a through hole, and the battery module shaping device further includes a connecting member, and the connecting member passes through the through hole to connect the second driving member and the side pressing mechanism.

[0028] In the above solution, the advantage of the separate arrangement of the second driving member and the side pressing mechanism is that it improves the space utilization rate, reduces the number of components on the working side of the base, enables a larger battery module to be placed on the base, and increases the compatibility of the battery module shaping device.

[0029] In some embodiments, two side pressing mechanisms are provided. The two side pressing mechanisms are oppositely arranged along the second direction, and a battery module placement area is formed between the two side pressing mechanisms; two pressing mechanisms are provided and correspond to the side pressing mechanisms one by one. Each pressing mechanism is movably arranged along the third direction on the corresponding side pressing mechanism.

[0030] In the above solution, the pressing mechanism is integrated into the side pressing mechanism, and two side pressing mechanisms are provided. First, the number of battery cells simultaneously contacted by a single pressing mechanism is reduced, thereby reducing the working pressure of the pressing mechanism and making the volume of the pressing mechanism smaller; second, by driving the fixed seat to move through the third driving member, all the pressing units in a pressing mechanism can be driven to move simultaneously, without the need to provide multiple driving members, reducing the structural complexity of the pressing mechanism and improving the reliability and processing cost.

[0031] In some embodiments, the battery module shaping device further includes: a first guide rail, fixed to the base and extending along the second direction, and the side pressing mechanism is slidably arranged on the first guide rail; a second guide rail, fixed to the side pressing mechanism and extending along the third direction, and the pressing mechanism is slidably arranged on the second guide rail.

[0032] In the above solution, the purpose of slidably connecting the side pressing mechanism and the base is achieved under the action of the first guide rail, and the purpose of slidably connecting the pressing mechanism and the side pressing mechanism is achieved under the action of the second guide rail.

[0033] In some embodiments, the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0034] In the above solution, the first direction, the second direction, and the third direction are perpendicular to each other in pairs, so that when the side pressing mechanism presses the battery cell vertically, the pressing unit can also press the battery cell vertically without adjustment, improving the shaping efficiency.

[0035] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0037] Figure 1 is a schematic exploded view of a battery according to some embodiments of the present application;

[0038] Figure 2 Schematic structural diagram of the pressing mechanism according to some embodiments of the present application;

[0039] Figure 3 Schematic structural diagram of the rotating shaft according to some embodiments of the present application;

[0040] Figure 4 Schematic structural diagram of the pressing unit according to some embodiments of the present application;

[0041] Figure 5 Schematic three-dimensional structural diagram of the battery module shaping device according to some embodiments of the present application;

[0042] Figure 6 is Figure 5 Enlarged schematic diagram of part A of

[0043] Figure 7 Front view structural diagram of the battery module shaping device according to some embodiments of the present application;

[0044] Figure 8 Side view structural diagram of the battery module shaping device according to some embodiments of the present application;

[0045] Figure 9 Top view structural diagram of the battery module shaping device according to some embodiments of the present application.

[0046] The reference numerals in the specific embodiments are as follows:

[0047] 100 - battery; 10 - box body; 11 - first part; 12 - second part; 20 - battery module; 201 - battery cell; 301 - base; 3011 - through hole; 302 - first guide rail; 303 - third driving member; 304 - second guide rail; 305 - vertical plate; 306 - reinforcing rib plate; 3061 - notch groove; 307 - horizontal plate; 308 - second driving member; 40 - pressing mechanism; 401 - pressing unit; 4011 - abutting portion; 40111 - clamping groove; 4012 - connecting portion; 402 - rotating shaft; 4021 - second segment; 4022 - first segment; 403 - fixing seat; 404 - first spiral groove; 405 - second spiral groove; 501 - sliding seat; 502 - side pressing abutting plate; 60 - detection unit; 70 - battery module placement area; 801 - threaded rod; 802 - nut. Specific embodiments

[0048] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only 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 drawings are intended to cover non-exclusive inclusion.

[0050] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0051] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0052] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0053] In the description of the embodiments of this application, the term "a plurality" means more than two (including two). Similarly, "a plurality of groups" means more than two groups (including two groups), and "a plurality of pieces" means more than two pieces (including two pieces).

[0054] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element 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 this application.

[0055] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship 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.

[0056] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed descriptions of the same components are omitted. It should be understood that the thickness, length, width, etc. of various components shown in the drawings in the embodiments of the present application, as well as the overall thickness, length, width, etc. of the integrated device are only for illustrative purposes and should not constitute any limitation to the present application.

[0057] A battery refers to a single physical module that includes one or more battery modules to provide higher voltage and capacity. For example, a battery is formed by connecting multiple battery modules in series or in parallel.

[0058] A battery module includes multiple battery cells, and the multiple battery cells are stacked. The multiple battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cells.

[0059] Generally, the battery cells in a battery module need to be neatly arranged according to certain rules. During the assembly process of the battery module, the shaping of the battery module refers to shaping multiple battery cells so that the battery cells can be neatly arranged. The shaping of the battery module includes lateral shaping and top shaping. Lateral shaping is to make the battery module laterally flat by applying pressure to multiple battery cells from the side, and top shaping is to make the top flat by applying pressure to the tops of multiple battery cells.

[0060] In the prior art, top shaping is achieved by controlling the pressing units corresponding to the number of battery cells to apply pressure to the battery cells from top to bottom. The inventor found that in the battery module shaping process, due to the different specifications of the battery modules, the number and types of battery cells are different, and it is necessary to adjust the number and spacing of the pressing units. The adjustment of the number and spacing of the pressing units is an important factor affecting the compatibility of the shaping equipment. The existing battery module shaping mechanisms are usually designed for a specific type of battery module, so the number of pressing units and the spacing between the pressing units are fixed and cannot meet the shaping requirements of multiple different types of battery modules. Although the pressing units can be designed as detachable structures, when the number of battery cells changes, the pressing units are disassembled and combined to make the pressing units correspond to the battery cells, but this method is cumbersome and complex to operate and has low efficiency.

[0061] In view of this, through in-depth research, the inventor has designed a pressing mechanism,

[0062] The distance between two adjacent pressing units is adjustable. Without disassembling and assembling the pressing units, by adjusting the distance between two adjacent pressing units, the pressing units can be aligned with each battery cell, so as to meet the shaping process requirements of battery modules of different models, increasing the compatibility of the shaping mechanism and improving the production efficiency.

[0063] Please refer to Figure 1 , Figure 1 which is an exploded view of the battery 100 provided in some embodiments of the present application.

[0064] The battery 100 includes a box body 10 and a plurality of battery cells 201, and the plurality of battery cells 201 are accommodated in the box body 10.

[0065] Among them, the box body 10 is used to provide a accommodation space for the battery cells 201, and the box body 10 can adopt various structures. In some embodiments, the box body 10 may include a first part 11 and a second part 12, the first part 11 and the second part 12 are covered with each other, and the first part 11 and the second part 12 jointly define a accommodation space for accommodating the battery cells 201. The second part 12 may be a hollow structure with one end open, and the first part 11 may be a plate-like structure. The first part 11 is covered on the open side of the second part 12 so that the first part 11 and the second part 12 jointly define a accommodation space; the first part 11 and the second part 12 may also be hollow structures with one side open, and the open side of the first part 11 is covered on the open side of the second part 12. Of course, the box body 10 formed by the first part 11 and the second part 12 may be in various shapes, such as a cylinder, a cuboid, etc.

[0066] In the battery 100, there are a plurality of battery cells 201, and the plurality of battery cells 201 can be connected in series, in parallel or in a mixed connection. The mixed connection means that there are both series and parallel connections among the plurality of battery cells 201. The plurality of battery cells 201 are first connected in series, in parallel or in a mixed connection to form a battery module 20; when the battery includes a plurality of battery modules 20, the plurality of battery modules 20 are then connected in series, in parallel or in a mixed connection to form a whole and are accommodated in the box body 10.

[0067] According to some embodiments of the present application, refer to Figure 2 , Figure 2Schematic diagram of the structure of the pressing mechanism according to some embodiments of the present application. The present application provides a pressing mechanism 40 for flattening the top surface of the battery module 20. The pressing mechanism 40 includes a fixed seat 403, a plurality of pressing units 401, and an adjusting mechanism. The plurality of pressing units 401 are arranged on the fixed seat 403 and arranged along the first direction. The adjusting mechanism is arranged on the fixed seat 403, and the adjusting mechanism is used to adjust the distance between two adjacent pressing units 401.

[0068] In the figure, the direction indicated by the X-axis is the first direction.

[0069] The top surface of the battery module 20 refers to the upper top surface of the battery module 20 in the vertical direction when the battery module 20 is placed horizontally.

[0070] First of all, the flatness of the top surface of the battery module 20 can make the arrangement of the battery cells 201 integral, improving the space utilization rate in the box 10. Secondly, the bottom plate of the battery module 20 and the battery cells 201 are bonded by glue. Pressurizing the top of the battery cells 201 can compact and spread the glue evenly, increasing the filling effect of the glue. Moreover, the battery module 20 also includes components such as busbars and tabs. Some components need to be welded to the electrode terminals of the battery cells 201. Uneven tops of the individual battery cells 201 may cause welding defects such as false welding during welding. Therefore, it is very necessary to shape the top of the battery module 20 to make it flat.

[0071] By moving the fixed seat 403, each pressing unit 401 presses on the top surface of the battery module 20, applying pressure to the top surface of the battery module 20 to achieve the purpose of shaping the top surface of the battery module 20. Further, since the electrode terminals are usually the highest points of the battery cells 201 in the vertical direction, when pressing the battery cells 201, the pressing unit 401 acts on the electrode terminals.

[0072] When the battery module 20 is changed in type, since the sizes of the battery cells 201 in different types of battery modules 20 are different, further resulting in different distances between the electrode terminals of two adjacent battery cells 201. Therefore, correspondingly, the distance between the pressing units 401 should also be changed, otherwise the pressing unit 401 cannot act on the electrode terminals. By adjusting with the adjusting mechanism, the distance between each pressing unit 401 can be adjusted to adapt to the change in the distance of the electrode terminals, enabling the pressing mechanism 40 to be used for the processing requirements of different types of battery modules 20 and improving the compatibility of the device.

[0073] Please refer to Figure 3 and please continue to refer to Figure 2 Figure 3 ​Schematic diagram of the rotating shaft structure according to some embodiments of the present application. According to some embodiments of the present application, optionally, the adjusting mechanism includes a rotating shaft 402, the rotating shaft 402 extends in a first direction, and a plurality of spiral grooves are provided on the outer peripheral surface of the rotating shaft 402. The spiral grooves spiral extend around the central axis of the rotating shaft 402. One end of each pressing unit 401 is embedded in the corresponding spiral groove, and the other end is used to contact the battery cell 201.

[0074] The outer peripheral surface refers to the curved surface of the rotating shaft 402.

[0075] The spiral groove and the rotating shaft 402 can be a split structure or an integral structure. For example, the spiral groove can be formed by installing a spiral guide rail on the rotating shaft 402, or can be formed by machining the outer peripheral surface of the rotating shaft 402.

[0076] When one end of the pressing unit 401 is embedded in the corresponding spiral groove, this end can be in clearance fit or sliding fit with the spiral groove, as long as it can move relative to the spiral groove.

[0077] The pressing units 401 are arranged on the fixed seat 403, which means that during the movement of each pressing unit 401 relative to the fixed seat 403, each pressing unit 401 also maintains an arranged state. Specifically, the pressing units 401 can be slidably connected to the fixed seat 403 or other components, so that the pressing units 401 move along the direction of their arrangement.

[0078] When the rotating shaft 402 rotates, the spiral groove rotates accordingly, so that the contact position between the pressing unit 401 and the spiral groove changes. At the same time, the contact position between the pressing unit 401 and the spiral groove moves in the first direction, which provides power for the pressing unit 401 to move and achieves the purpose of driving the pressing unit 401 to move.

[0079] Please continue to refer to Figure 3 . According to some embodiments of the present application, optionally, the rotating shaft 402 includes a first section 4022 and a second section 4021. At least one first spiral groove 404 is provided on the outer peripheral surface of the first section 4022, and at least one second spiral groove 405 is provided on the outer peripheral surface of the second section 4021. The spiral direction of the first spiral groove 404 is opposite to that of the second spiral groove 405.

[0080] The division of the first section 4022 and the second section 4021 means that it is divided along a reference plane perpendicular to the axis of the rotating shaft 402, and the rotating shaft 402 is divided into two ends. One side of the reference plane is the first section 4022, and the other side is the second section 4021.

[0081] When adjusting the spacing between the two pressing units 401, the movement forms between the two pressing units 401 include the following several types. Taking the case where the spacing becomes larger as an example, the first type is that one of the pressing units 401 remains stationary, and the other pressing unit 401 moves relative to the stationary pressing unit 401; the second type is that the two pressings move in opposite directions simultaneously; the third type is that the two pressing units 401 move in the same direction with different moving speeds. In the case of the same moving speed (in the first case, it refers to the speed of the moving pressing unit 401, and in the third case, it refers to the speed of the faster moving pressing unit 401), the second movement form takes the shortest time, the moving distances of each pressing unit 401 are relatively balanced and are all smaller than the maximum moving distance of the pressing unit 401 in the other two cases.

[0082] Therefore, the opposite helix directions of the first helical groove 404 and the second helical groove 405 cause the pressing units 401 embedded in the first helical groove 404 and the pressing units 401 embedded in the second helical groove 405 to move in opposite directions when the rotating shaft 402 rotates, that is, the second case mentioned above. On the one hand, it avoids the excessive difference in the lengths of the first helical groove 404 and the second helical groove 405. Given a certain length of the rotating shaft 402, it avoids the excessive difference in the number of the first helical groove 404 and the second helical groove 405. On the other hand, the moving distance of each pressing unit 401 is shorter, increasing the number of pressing units 401 that can be controlled by the rotating shaft 402.

[0083] Please continue to refer to Figure 3 According to some embodiments of the present application, optionally, the number of the first helical grooves 404 is multiple, and along the axial direction of the rotating shaft 402 and in the direction away from the second section 4021, the lead of the multiple first helical grooves 404 gradually increases.

[0084] The rotation direction of the rotating shaft 402 is parallel to the first direction, which can both be the direction indicated by the X-axis in the figure.

[0085] The lead of the first helical groove 404 refers to the spacing between adjacent corresponding points of the first helical groove 404. For example, dividing the rotating shaft 402 by a reference plane parallel to the axis of the rotating shaft 402, the spacing between the two cross-sections of the first helical groove 404 above this reference plane is the lead of the first helical groove 404.

[0086] For the pressing units 401 that all cooperate with the first helical groove 404, the moving directions of the respective pressing units 401 are the same. Therefore, in order to enable the adjustment of the spacing between adjacent pressing units 401, the moving speeds of adjacent pressing units 401 should be different, that is, the lead pitches of adjacent first helical grooves 404 should be different. At the same time, in order to enable the adjustment of the spacing between all the pressing units 401 that cooperate with the first helical groove 404, along the axial direction of the rotating shaft 402 and in the direction away from the second section 4021, the moving distance of the pressing unit 401 gradually increases. Therefore, in the direction away from the second section 4021, the lead pitch of the first helical groove 404 should gradually increase.

[0087] Please continue to refer to Figure 3 According to some embodiments of the present application, optionally, the number of the second helical grooves 405 is multiple, and along the axial direction of the rotating shaft 402 and in the direction away from the first section 4022, the lead pitches of the multiple second helical grooves 405 gradually increase.

[0088] In order to enable the adjustment of the spacing between adjacent pressing units 401 on the second section 4021, the moving speeds of adjacent pressing units 401 should be different, that is, the lead pitches of adjacent second helical grooves 405 should be different. At the same time, in order to enable the adjustment of the spacing between all the pressing units 401 that cooperate with the second helical groove 405, along the axial direction of the rotating shaft 402 and in the direction away from the first section 4022, the moving distance of the pressing unit 401 gradually increases. Therefore, in the direction away from the first section 4022, the lead pitch of the second helical groove 405 should gradually increase.

[0089] Please continue to refer to Figure 3 According to some embodiments of the present application, optionally, the first helical groove 404 and the second helical groove 405 are symmetrically arranged with respect to a reference plane, and the reference plane is perpendicular to the central axis of the rotating shaft 402 and is located between the first section 4022 and the second section 4021.

[0090] The reference plane here is the reference plane D shown in the figure.

[0091] In the above solution, when the first helical groove 404 and the second helical groove 405 are symmetric with respect to the reference plane D, the lead pitches of the first helical groove 404 and the corresponding second helical groove 405 are the same (the corresponding second helical groove 405 refers to starting from the helical groove closest to the reference plane D, and the lead pitches of the first helical groove 404 and the second helical groove 405 in the same sequence are the same. For example, the lead pitch of the first first helical groove 404 and the first second helical groove 405 is the same, and so on).

[0092] When the rotating shaft 402 rotates, since the lead of the first spiral groove 404 is the same as that of the second spiral groove 405, the moving speed and moving distance of the corresponding pressing unit 401 are the same, which is convenient for adjustment. Moreover, when the leads are the same, it is convenient to machine the first spiral groove 404 and the second spiral groove 405, reducing the machining difficulty.

[0093] According to some embodiments of the present application, optionally, in some embodiments, the leads of the plurality of first spiral grooves 404 form a first arithmetic progression, and the leads of the plurality of second spiral grooves 405 form a second arithmetic progression. The common difference of the first arithmetic progression is d1, and the common difference of the second arithmetic progression is d2. The lead of the first one of the plurality of first spiral grooves 404 closest to the reference plane D is L, satisfying:

[0094] d1 = d2 = 2L.

[0095] Since the battery cells 201 in the battery module 20 are arranged in an orderly manner, the distance between adjacent battery cells 201 is also the same. Therefore, when adjusting the distance between the respective pressing units 401, the distances between the respective pressing units 401 should be the same.

[0096] In the above solution, the leads of the first spiral groove 404 and the second spiral groove 405 respectively form an arithmetic progression. When the rotating shaft 402 rotates, when the pressing unit 401 cooperating with the first section 4022 of the rotating shaft 402 moves, the pressing units 401 maintain an equal distance. When the pressing unit 401 cooperating with the second section 4021 of the rotating shaft 402 moves, the pressing units 401 maintain an equal distance. Moreover, d1 = d2 = 2L enables the distance between the pressing units 401 cooperating with the first spiral groove 404 to be equal to the distance between the pressing units 401 cooperating with the second spiral groove 405.

[0097] Optionally, the starting ends of all the first spiral grooves 404 and the second spiral grooves 405 are on one generatrix of the rotating shaft 402, and the ending ends of all the first spiral grooves 404 and the second spiral grooves 405 are on another generatrix of the rotating shaft 402.

[0098] Optionally, in the initial state, the distances between all the pressing units 401 are the same.

[0099] According to some embodiments of the present application, optionally, the pressing unit 401 includes a body and a cam follower. The cam follower is installed at one end of the body, and the cam follower is in rolling cooperation with the spiral groove.

[0100] The cam follower includes a rotatable wheel body and a fixed end, and its structure is the content disclosed in the prior art, which will not be elaborated here.

[0101] The fixed end of the cam follower is connected to the pressing unit 401, and its wheel body is in rolling fit with the rotating groove. The cam follower converts the friction between the pressing unit 401 and the spiral groove from sliding friction to rolling friction, reducing the resistance when driving the pressing unit 401 to move, and making the cooperation between the pressing unit 401 and the spiral groove smoother, avoiding jamming between the pressing unit 401 and the spiral groove.

[0102] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of the pressing unit according to some embodiments of the present application. Optionally, the body of the pressing unit 401 may have the following structure: including an abutting portion 4011 and a connecting portion 4012. The connecting portion 4012 is slidably disposed on the fixed seat 403. The abutting portion 4011 is used to apply pressure to the battery cell 201. The abutting portion 4011 is provided with a card slot 40111 which penetrates the abutting portion 4011 along a direction perpendicular to the third direction. The connecting portion 4012 is partially inserted into the card slot 40111 so that the abutting portion 4011 and the connecting portion 4012 are detachably connected. Since the reaction force received by the abutting portion 4011 when acting on the battery cell 201 is along the third direction, the connecting portion 4012 will not come out of the card slot 40111.

[0103] Optionally, in the same pressing unit 401, there may be two abutting portions 4011. As is known, a battery cell 201 usually has two electrode terminals, namely a positive electrode terminal and a negative electrode terminal. If pressure is only applied to one electrode terminal, the force on one side of the battery cell 201 is greater than that on the other side, reducing the leveling effect. Moreover, concentrated force on one part of the battery cell 201 may cause the battery cell 201 to be over-pressed and pose a safety hazard.

[0104] According to some embodiments of the present application, optionally, the pressing mechanism 40 further includes a first driving member which is installed on the fixed seat 403 and is used to drive the rotating shaft 402 to rotate.

[0105] The purpose of driving the rotating shaft 402 to rotate is achieved through the first driving member.

[0106] The power source of the first driving member can be a motor. A transmission structure can be set according to needs. The transmission structure can be a speed reducer, or the output end of the motor can be directly connected to the rotating shaft 402. Specifically, when the motor directly drives the rotating shaft 402 to rotate, the housing of the motor can be fixed to the fixed seat 403, and the rotating output end of the motor is coaxially connected to the rotating shaft 402; when a transmission structure is provided, the housing of the motor is fixed to the fixed seat 403, the rotating output end of the motor is coaxially connected to the input end of the transmission structure, and the output end of the transmission structure is coaxially connected to the rotating shaft 402.

[0107] Please refer to Figure 5 ,Figure 5 Schematic three - dimensional structure diagram of the battery module shaping device according to some embodiments of the present application. Second, the present application provides a battery module shaping device, including: a base 301; a side - pressing mechanism movably arranged on the base 301 along a second direction for flattening the side surface of the battery module 20; the pressing mechanism 40 in the above - mentioned embodiment, the pressing mechanism 40 is movably arranged on the side - pressing mechanism along a third direction for flattening the top surface of the battery module 20, and the third direction is perpendicular to the second direction.

[0108] In the figure, the second direction is the direction indicated by the Y - axis, and the third direction is the direction indicated by the Z - axis. For example, when the second direction is the horizontal direction, the third direction can be the vertical direction.

[0109] By shaping the side surface of the battery module 20 through the side - pressing mechanism and shaping the top surface of the battery module 20 through the pressing mechanism 40, this device can simultaneously complete the shaping of the side surface and the top surface of the battery module 20, improving the shaping efficiency.

[0110] Please continue to refer to Figure 5 According to some embodiments of the present application, optionally, the battery module shaping device further includes: a first guide rail 302 fixed to the base 301 and extending along the second direction, and the side - pressing mechanism is slidably arranged on the first guide rail 302; a second guide rail 304 fixed to the side - pressing mechanism and extending along the third direction, and the pressing mechanism 40 is slidably arranged on the second guide rail 304.

[0111] The first guide rail 302 is used to achieve the purpose of slidably connecting the side - pressing mechanism and the base 301, and the second guide rail 304 is used to achieve the purpose of slidably connecting the pressing mechanism 40 and the side - pressing mechanism.

[0112] It should be noted that the guide rails mentioned in the present application include both the guide rail body and the mating part slidably connected to the guide rail. The mating part can be a slider or a chute formed on the component slidably connected to the guide rail for the guide rail to pass through.

[0113] According to some embodiments of the present application, optionally, the first direction, the second direction, and the third direction are perpendicular to each other pairwise.

[0114] In the above - mentioned solution, the first direction, the second direction, and the third direction are perpendicular to each other pairwise, so that when the side - pressing mechanism presses directly on the battery cell 201, the pressing unit 401 can also press directly on the battery cell 201 without adjustment, improving the shaping efficiency.

[0115] Please continue to refer to Figure 5 , and please further refer to Figure 7 and Figure 8 , Figure 7 Front - view structure diagram of the battery module shaping device according to some embodiments of the present application,Figure 8 This is a schematic side view structure of a battery module shaping device according to some embodiments of the present application. According to some embodiments of the present application, optionally, the battery module shaping device further includes: a second driving member 308, installed on the base 301, for driving the side pressing mechanism to move in a second direction; a third driving member 303, installed on the side pressing mechanism, for driving the downward pressing mechanism 40 to move in a third direction.

[0116] The second driving member 308 provides the power for the side pressing mechanism to move, and enables the side pressing mechanism to generate pressure on the battery module 20. The third driving member 303 provides the power for the downward pressing mechanism 40 to move and enables each downward pressing unit 401 to generate pressure on the battery module 20, achieving the purpose of shaping the top surface and side surface of the battery module 20.

[0117] The second driving member 308 and the third driving member 303 can be common linear driving structures, such as a gear-rack driving structure, a lead screw driving structure, or a cylinder.

[0118] Taking the second driving member 308 as an example, when driven by a gear-rack driving structure, the gear-rack driving structure includes a rack and a gear. The gear is rotatably arranged on the base 301, the rack is connected to the side pressing mechanism, and the gear and the rack are meshed. When the gear rotates, the rack moves under the drive of the gear to drive the side pressing mechanism to move; when driven by a lead screw driving structure, the lead screw driving structure includes a lead screw. The lead screw is rotatably connected to the base 301, and the side pressing mechanism is threadedly connected to the lead screw. When the lead screw rotates, the side pressing mechanism moves under the drive of the lead screw; when driven by a cylinder, the fixed end of the cylinder is arranged on the base 301, and the movable end of the cylinder is connected to the side pressing mechanism.

[0119] Optionally, the second driving member 308 is a second cylinder, the third driving member is a third cylinder. The fixed end of the second cylinder is arranged on the base 301, and the movable end of the second cylinder is connected to the side pressing mechanism; the fixed end of the third cylinder is arranged on the side pressing mechanism, and the movable end of the third cylinder is connected to the downward pressing mechanism 40. The advantage of using a cylinder as a linear driving structure is that the structure of the cylinder is compact and occupies little space.

[0120] Optionally, the battery module shaping device further includes a support seat. The third cylinder is connected to the fixed seat 403 through the support seat to achieve the purpose of driving the downward pressing mechanism 40 to move. The support seat includes a vertical plate 305 extending in a direction perpendicular to the second direction, a horizontal plate 307 extending in the second direction, and a reinforcing rib plate 306. The vertical plate 305 and the horizontal plate 307 are connected, and the reinforcing rib plate 306 is connected to the vertical plate 305 and the horizontal plate 307 to increase the connection strength between the vertical plate 305 and the horizontal plate 307. The fixed seat 403 is arranged on the horizontal plate 307, and the vertical plate 305 is slidably connected to the second guide rail 304 to achieve the purpose of slidably connecting the downward pressing mechanism 40 to the side pressing mechanism.

[0121] Please refer to Figure 6 , Figure 6 which is Figure 5 an enlarged schematic view of part A of

[0122] Please refer to Figure 7 and Figure 8 . According to some embodiments of the present application, optionally, the second driving member 308 and the side pressing mechanism are respectively arranged on two sides of the base 301. The base 301 is provided with a through hole 3011, and the battery module shaping device further includes a connecting member that passes through the through hole 3011 to connect the second driving member 308 and the side pressing mechanism.

[0123] The connecting member is used to transmit the torque of the second driving member 308 to the side pressing mechanism, and the connecting member can be a rod body.

[0124] If the base 301 is horizontally arranged and the side pressing mechanism is arranged above the base 301, then the second driving member 308 is located below the base 301.

[0125] The advantage of the separate side arrangement is that it improves the space utilization rate, reduces the number of components on the working side of the base 301, enables a larger battery module 20 to be placed on the base 301, and increases the compatibility of the battery module shaping device.

[0126] Please continue to refer to Figure 5 , Figure 7 and Figure 8Optionally, the side pressing mechanism may include a side pressing contact plate 502 and a sliding seat 501. The sliding seat 501 is slidably disposed on the first guide rail 302. A connecting member is connected to the side pressing contact plate 502 or the sliding seat 501. By pressing the side pressing contact plate 502 against the side surface of the battery module 20 and applying pressure, the purpose of shaping the side surface of the battery module 20 is achieved. The second guide rail 304 may be disposed on the sliding seat 501 to achieve the purpose of slidably connecting the downward pressing mechanism 40 to the side pressing mechanism.

[0127] Optionally, the sliding seat 501 may be provided with a detection unit 60 for detecting the distance that the downward pressing mechanism 40 moves along the third direction. The detection unit 60 may include a sensor. The sensor is electrically connected to a processor. The measurement data of the sensor is processed by the processor and then fed back to the user or other control devices. The working principles of the sensor and the processor are well-known content and will not be elaborated here.

[0128] Please refer to Figure 9 , Figure 9 is a schematic top view structure diagram of a battery module shaping device according to some embodiments of the present application. According to some embodiments of the present application, optionally, two side pressing mechanisms are provided. The two side pressing mechanisms are oppositely disposed along the second direction, and a battery module placement area 70 is formed between the two side pressing mechanisms; two downward pressing mechanisms 40 are provided and correspond to the side pressing mechanisms one by one. Each downward pressing mechanism 40 is movably disposed along the third direction on the corresponding side pressing mechanism.

[0129] The battery module placement area 70 refers to the area on the bottom plate for placing the battery module 20 to be shaped. The battery module placement area 70 may be disposed in the middle of the two side pressing mechanisms.

[0130] Currently, although there are battery module shaping devices in the prior art that can simultaneously shape the top surface and the side surface of the battery module 20, the top surface shaping structure and the side surface shaping structure of the existing battery module shaping devices are split structures, that is, the two are independent components. The disadvantage of this structure is that, due to the intersection of the moving paths of the pressing members of the side surface shaping structure and the top surface shaping structure, in order to avoid interference, the structure of the entire device is relatively large. For example, the pressing member of the side surface shaping structure needs to press the battery module 20 laterally. In order to avoid collision with the pressing member of the side surface shaping structure, the pressing member of the top surface shaping structure needs to be disposed above the pressing member of the side surface shaping structure.

[0131] In the present application, the downward pressing mechanism 40 is integrated into the side pressing mechanism. The movement of the downward pressing unit 401 and the movement of the side pressing mechanism do not interfere with each other, reducing the floor area of the device. Moreover, two side pressing mechanisms are provided. First, the number of battery cells 201 simultaneously contacted by a single downward pressing mechanism 40 is reduced, thereby reducing the working pressure of the downward pressing mechanism 40 and making the volume of the downward pressing mechanism 40 smaller. Second, by driving the fixed seat 403 to move through the third driving member 303, all the downward pressing units 401 in one downward pressing mechanism 40 can be driven to move simultaneously, eliminating the need to set multiple driving members, reducing the structural complexity of the downward pressing mechanism 40, and improving reliability and processing cost.

[0132] According to some embodiments of the present application, referring to Figures 2 to 9 , the present application provides a battery module shaping device, which includes: a base 301; two side pressing mechanisms movably arranged on the base 301 along a second direction, the two side pressing mechanisms being symmetrically arranged on the base 301, and a battery module placement area 70 being provided in the middle of the two side pressing mechanisms; two downward pressing mechanisms 40 in the above-mentioned embodiments, the downward pressing mechanisms 40 being movably arranged on the side pressing mechanisms along a third direction in a one-to-one correspondence, the thickness direction of the base 301 being parallel to the third direction, and both the side pressing mechanisms and the downward pressing mechanisms 40 being arranged above the base 301.

[0133] Two first guide rails 302 are provided on the base 301, the two first guide rails 302 being spaced apart along a first direction and extending along the second direction, the first direction, the second direction, and the third direction being perpendicular to each other in pairs.

[0134] The side pressing mechanism includes a side pressing abutting plate 502, two sliding seats 501, and a second air cylinder. The side pressing abutting plate 502 is used to flatten the side of the battery module 20, the thickness direction of the side pressing abutting plate 502 being parallel to the first direction. The sliding seats 501 are connected to both sides of the side pressing abutting plate 502 along the first direction, and the sliding seats 501 are slidably arranged on the first guide rails 302 in a one-to-one correspondence. The base 301 is provided with a through hole 3011, the second air cylinder is arranged below the base 301, the fixed end of the second air cylinder is connected to the base 301, and the side pressing abutting plate 502 is connected to the movable end of the second air cylinder through a connecting member via the through hole 3011.

[0135] The pressing mechanism 40 includes: a fixed seat 403. The sliding seat 501 is provided with a second guide rail 304 extending in the third direction. The two sides of the fixed seat 403 along the first direction are respectively slidably connected to the two second guide rails 304. The sliding seat 501 is further provided with a third air cylinder. The fixed end of the third air cylinder is connected to the sliding seat 501, and the movable end of the third air cylinder is connected to the fixed seat 403; a plurality of pressing units 401 for flattening the top surface of the battery module 20. The fixed seat 403 is provided with a third guide rail extending in the first direction. The lower pressing units are all slidably connected to the third guide rail, and the pressing unit 401 and the third guide rail are detachably connected; a rotating shaft 402. The rotating shaft 402 extends in the first direction. The rotating shaft 402 includes a first section 4022 and a second section 4021. A plurality of first spiral grooves 404 are provided on the outer peripheral surface of the first section 4022, and a plurality of second spiral grooves 405 are provided on the outer peripheral surface of the second section 4021. The first spiral grooves 404 of the first section 4022 and the second spiral grooves 405 of the second section 4021 are symmetrically arranged with respect to a reference plane D perpendicular to the midpoint of the axis of the rotating shaft 402 and have opposite helix directions. The lead of the plurality of first spiral grooves 404 is a first arithmetic progression, and the lead of the plurality of second spiral grooves 405 is a second arithmetic progression. The common difference of the first arithmetic progression is d1, and the common difference of the second arithmetic progression is d2. The lead of the one closest to the reference plane D among the plurality of first spiral grooves 404 is L, satisfying: d1 = d2 = 2L, and the leads of the first spiral grooves 404 and the second spiral grooves 405 gradually decrease from the end of the rotating shaft 402 to the middle of the rotating shaft 402.

[0136] The number of the pressing units 401 is the same as the total number of the first spiral grooves 404 and the second spiral grooves 405. The total number of the first spiral grooves 404 is the same as the total number of the second spiral grooves 405. The top end of the pressing unit 401 is provided with a cam follower. The wheel bodies of the cam followers of the respective pressing units 401 are respectively arranged in the spiral grooves of the first section 4022 and the second section 4021.

[0137] In the pressing mechanism 40 of the battery module shaping device, the spacing of the pressing units 401 can be adjusted according to the difference of the battery module 20, improving the compatibility of the battery module shaping device. The pressing mechanism 40 is integrated into the side pressing mechanism, reducing the floor area of the shaping mechanism of the battery module 20.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A pressing mechanism for flattening the top surface of a battery module, characterized in that, Comprising: A fixed seat; A plurality of pressing units, arranged on the fixed seat along a first direction, and the pressing units are slidably connected to the fixed seat along the first direction; And An adjusting mechanism, arranged on the fixed seat, for adjusting the distance between two adjacent pressing units, the adjusting mechanism includes a rotating shaft, the rotating shaft extends along the first direction, and a plurality of spiral grooves are arranged on the outer peripheral surface of the rotating shaft, the spiral grooves spiral around the central axis of the rotating shaft, and one end of each pressing unit is embedded in the corresponding spiral groove, and the other end is used to contact the battery cell.

2. The pressing mechanism according to claim 1, characterized in that The rotating shaft includes a first section and a second section, at least one first spiral groove is arranged on the outer peripheral surface of the first section, and at least one second spiral groove is arranged on the outer peripheral surface of the second section, and the spiral direction of the first spiral groove is opposite to the spiral direction of the second spiral groove.

3. The pressing mechanism according to claim 2, wherein The number of the first spiral grooves is multiple, and along the axial direction of the rotating shaft and towards the direction away from the second section, the lead of the multiple first spiral grooves gradually increases.

4. The pressing mechanism according to claim 2, characterized in that, The number of the second spiral grooves is multiple, and along the axial direction of the rotating shaft and towards the direction away from the first section, the lead of the multiple second spiral grooves gradually increases.

5. The pressing mechanism according to claim 2, wherein The first spiral groove and the second spiral groove are symmetrically arranged with respect to a reference plane, the reference plane is perpendicular to the central axis of the rotating shaft and is located between the first section and the second section.

6. The pressing mechanism according to claim 5, characterized in that The leads of the multiple first spiral grooves form a first arithmetic progression, the leads of the multiple second spiral grooves form a second arithmetic progression, the common difference of the first arithmetic progression is d1, the common difference of the second arithmetic progression is d2, and the lead of the first spiral groove closest to the reference plane among the multiple first spiral grooves is L, satisfying: d1 = d2 = 2L.

7. The pressing mechanism according to claim 1, wherein The pressing unit includes a body and a cam follower, the cam follower is installed at one end of the body, and the cam follower is in rolling cooperation with the spiral groove.

8. The pressing mechanism according to claim 1, wherein The pressing mechanism further includes a first driving member, the first driving member is installed on the fixed seat, and is used to drive the rotating shaft to rotate.

9. A battery module shaping device, characterized in that, Comprising: A base; A side pressing mechanism, movably arranged on the base along a second direction, for flattening the side surface of the battery module; The pressing mechanism according to any one of claims 1-8, the pressing mechanism is movably arranged on the side pressing mechanism along a third direction, for flattening the top surface of the battery module, and the third direction is perpendicular to the second direction.

10. The battery module shaping device according to claim 9, characterized in that, The battery module shaping device further includes: A second driving member, installed on the base, for driving the side pressing mechanism to move along the second direction; A third driving member, installed on the side pressing mechanism, for driving the pressing mechanism to move along the third direction.

11. The battery module shaping device according to claim 10, characterized in that, The second driving member and the side pressing mechanism are respectively arranged on both sides of the base, the base is provided with a through hole, and the battery module shaping device further includes a connecting member, and the connecting member passes through the through hole to connect the second driving member and the side pressing mechanism.

12. The battery module shaping device according to claim 9, characterized in that, There are two side pressing mechanisms, and the two side pressing mechanisms are arranged oppositely along the second direction, and a battery module placement area is formed between the two side pressing mechanisms; There are two of the pressing-down mechanisms, which correspond to the side pressing mechanisms one by one. Each of the pressing-down mechanisms is movably arranged along the third direction on the corresponding side pressing mechanism.

13. The battery module shaping device according to claim 9, characterized in that, The battery module shaping device further includes: a first guide rail, fixed to the base and extending along the second direction, and the side pressing mechanism is slidably arranged on the first guide rail; a second guide rail, fixed to the side pressing mechanism and extending along the third direction, and the pressing-down mechanism is slidably arranged on the second guide rail.

14. The battery module shaping device according to claim 9, wherein, The first direction, the second direction and the third direction are perpendicular to each other in pairs.

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