WO2024012538A1 - Pressing mechanism and battery module shaping apparatus - Google Patents

Abstract

The present application discloses a pressing mechanism and a battery module shaping apparatus. The pressing mechanism is used for flattening the top surface of a battery module and comprises: a fixing seat; a plurality of pressing units disposed on the fixing seat and arranged in a first direction; and an adjusting mechanism disposed on the fixing seat and used for adjusting the distance between two adjacent pressing units. In the pressing mechanism, the distance between the pressing units can be adjusted according to differences between battery modules, thereby improving the compatibility of the battery module shaping apparatus.

Description

Pressure mechanism and battery module shaping device

Cross-references to related applications

This application claims priority to Chinese patent application 202210826169.7 titled "Pressing down mechanism and battery module shaping device" submitted on July 14, 2022. The entire content of this application is incorporated herein by reference.

Technical field

This application relates to the field of battery manufacturing equipment, specifically to a pressing mechanism and a battery module shaping device.

Background technique

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

The battery includes at least one battery module. For batteries with different capacities, the battery module models and quantities are different, and the battery cell models and quantities in the battery modules are also different. Therefore, in the production of battery modules, it is necessary to improve the production equipment Compatibility of different battery modules is a technical issue that needs to be solved urgently.

Contents of the invention

The purpose of this application is to provide a pressing mechanism and a battery module shaping device. The push-down mechanism is compatible with different types of battery modules.

In a first aspect, this application provides a pressing mechanism for flattening the top surface of a battery module, including: a fixed base; a plurality of pressing units arranged on the fixed base and arranged along a first direction; and an adjustment The mechanism is installed on the fixed base and is used to adjust the distance between two adjacent pressing units.

In the above solution, due to the different sizes of battery cells in different types of battery modules, the distance between the push-down units should also be changed accordingly. The distance between two adjacent push-down units should be adjusted through the adjustment mechanism. The pressing mechanism can be used for the processing needs of different types of battery modules, which improves the compatibility of the device.

In some embodiments, the adjustment mechanism includes a rotating shaft extending along the first direction. A plurality of spiral grooves are provided on the outer circumferential surface of the rotating shaft. The spiral grooves spirally extend around the central axis of the rotating shaft. One end of each pressing unit is embedded in the corresponding Spiral groove, the other end is used to contact the battery cells.

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 to move the pressing unit, thereby achieving the purpose of driving the pressing unit to move.

In some embodiments, the rotating shaft includes a first section and a second section, the first section is provided with at least one first spiral groove on its outer circumferential surface, the second section is provided with at least one second spiral groove on its outer circumferential surface, and the first section is provided with at least one first spiral groove on its outer circumferential surface. The direction of rotation of the spiral groove is opposite to the direction of rotation of the second spiral groove.

In the above solution, the directions of rotation of the first spiral groove and the second spiral groove are opposite, so that the length of a certain spiral groove extending along the rotation axis is within a reasonable range, so that the number of the first spiral groove and the second spiral groove can be the same, and at the same time , increasing the number of controllable pressing units of the rotating shaft.

In some embodiments, there are multiple first spiral grooves, and the leads of the plurality of first spiral grooves gradually increase along the axial direction of the rotating shaft and in the direction away from the second section.

In the above solution, along the axial direction of the rotating shaft and in the direction away from the second section, the leads of the plurality of first spiral grooves gradually increase so that the spacing between all the pressing units that cooperate with the first spiral grooves can be Adjustment.

In some embodiments, there are multiple second spiral grooves, and the leads of the plurality of second spiral grooves gradually increase along the axial direction of the rotating shaft and in the direction away from the first section.

In the above solution, along the axial direction of the rotating shaft and in the direction away from the first section, the leads of the plurality of second spiral grooves gradually increase so that the spacing between all the pressing units that cooperate with the second spiral grooves can be Adjustment.

In some embodiments, the first spiral groove and the second spiral groove are arranged symmetrically about a reference plane, which is perpendicular to the central axis of the rotating shaft and located between the first section and the second section.

In the above solution, when the rotating shaft rotates, since the leads of the first spiral groove and the second spiral groove are the same, the moving speed and moving distance of the corresponding pressing units are the same, which facilitates adjustment.

In some embodiments, the leads of the plurality of first spiral grooves are a first arithmetic sequence, the leads of the plurality of second spiral grooves are a second arithmetic sequence, the tolerance of the first arithmetic sequence is d1, and the second arithmetic sequence has a tolerance of d1. The tolerance of the arithmetic sequence is d2, and the lead of the one closest to the datum among the plurality of first spiral grooves is L, which satisfies: d1=d2=2L.

In the above scheme, the lead of the first spiral groove and the lead of the second spiral groove respectively form an arithmetic sequence, so that when the rotating shaft rotates and the pressing unit that cooperates with the first section of the rotating shaft moves, the pressing units are maintained Equally spaced. When the press-down unit that cooperates with the second section of the rotating shaft moves, the press-down units maintain equal spacing. At the same time, the lead of the first spiral groove and the lead of the second spiral groove are equal to 2L at the same time, so that the distance between the pressing unit matching the first spiral groove can be equal to the distance between the pressing unit matching the second spiral groove. The spacing is equal.

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 fit with the spiral groove.

In the above scheme, the cam follower converts the friction between the pressing unit and the spiral groove from sliding friction into rolling friction, which reduces the resistance when driving the pressing unit to move and makes the cooperation between the pressing unit and the spiral groove more precise. Smooth, reducing the risk of the pressing unit and spiral groove getting stuck.

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

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

In a second aspect, this application provides a battery module shaping device, including: a base; a lateral pressing mechanism, movably disposed on the base along the second direction, for flattening the side of the battery module; in the above embodiment The pressing mechanism is movably arranged on the side pressing mechanism along the third direction, and is used to flatten the top surface of the battery module, and the third direction is perpendicular to the second direction.

In the above solution, the side pressing mechanism is used to shape the side of the battery module, and the downward pressing mechanism is used to shape the top surface of the battery module. This can complete the shaping of the side and top surfaces of the battery module at the same time, improving the shaping efficiency; The downward pressing mechanism is integrated into the side pressing mechanism, reducing the complexity of the device.

In some embodiments, the battery module shaping device further includes: a second driving member, installed on the base, for driving the lateral pressing mechanism to move in the second direction; and a third driving member, installed on the lateral pressing mechanism, for driving the downward pressing mechanism. The pressing mechanism moves in the third direction.

In the above solution, the second driving member provides the power to move the side pressing mechanism and enables the side pressing mechanism to generate pressure on the battery module. The third driving member provides the power to move the pressing mechanism and enables each pressing unit to move. The battery module is produced to achieve the purpose of shaping the top and side surfaces of the battery module.

In some embodiments, the second driving member and the lateral pressing mechanism are respectively provided on both sides of the base, and the base is provided with a through hole. The battery module shaping device also includes a connecting member that passes through the through hole to connect to the second driving member. and lateral pressure mechanism.

In the above solution, the advantage of arranging the second driving part and the side pressure mechanism separately is to improve the space utilization, reduce the number of parts on the working side of the base, enable larger battery modules to be placed on the base, and increase the Battery module shaping device compatibility.

In some embodiments, there are two lateral pressing mechanisms, and the two lateral pressing mechanisms are arranged opposite each other along the second direction. A battery module placement area is formed between the two lateral pressing mechanisms; The pressing mechanisms correspond one to one, and each pressing mechanism is movably arranged on the corresponding side pressing mechanism along the third direction.

In the above solution, the downward pressure mechanism is integrated into the side pressure mechanism, and there are two side pressure mechanisms. First, the number of battery cells that a single downward pressure mechanism contacts at the same time is reduced, thereby reducing the working pressure of the downward pressure mechanism. This makes the volume of the pressing mechanism smaller; secondly, by driving the fixed base 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 install multiple driving members, which reduces the structure of the pressing mechanism. complexity, improving reliability and processing costs.

In some embodiments, the battery module shaping device further includes: a first guide rail, fixed to the base and extending in the second direction, and a lateral pressure mechanism slidably disposed on the first guide rail; a second guide rail, fixed to the lateral pressure mechanism. Extending along the third direction, the pressing mechanism is slidably disposed on the second guide rail.

In the above solution, the purpose of slidingly connecting the lateral pressure mechanism and the base is achieved under the action of the first guide rail, and the purpose of slidingly connecting the downward pressure mechanism and the lateral pressure mechanism is achieved under the action of the second guide rail.

In some embodiments, the first direction, the second direction and the third direction are perpendicular to each other.

In the above solution, the first direction, the second direction and the third direction are perpendicular to each other, so that when the lateral pressure mechanism is pressing on the battery cell, the downward pressure unit can also press on the battery cell without adjustment, which improves the shaping performance. efficiency.

The above description is only an overview of the technical solution of the present application. In order to have a clearer understanding of the technical means of the present application, the following The contents of the description are implemented, and in order to make the above and other objects, features and advantages of the present application more obvious and understandable, the specific implementation modes of the present application are listed below.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be construed as limiting the application. Also, the same parts are represented by the same reference numerals throughout the drawings. In the attached picture:

Figure 1 is a schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

Figure 2 is a schematic structural diagram of the pressing mechanism of some embodiments of the present application;

Figure 3 is a schematic structural diagram of a rotating shaft in some embodiments of the present application;

Figure 4 is a schematic structural diagram of a pressing unit according to some embodiments of the present application;

Figure 5 is a schematic three-dimensional structural diagram of a battery module shaping device according to some embodiments of the present application;

Figure 6 is an enlarged schematic diagram of point A in Figure 5;

Figure 7 is a schematic front structural view of a battery module shaping device according to some embodiments of the present application;

Figure 8 is a schematic side structural diagram of a battery module shaping device according to some embodiments of the present application;

Figure 9 is a schematic top structural view of a battery module shaping device according to some embodiments of the present application.

The reference numbers in the specific implementation are as follows:

100-battery; 10-box; 11-first part; 12-second part; 20-battery module; 201-battery cell; 301-base; 3011-through hole; 302-first guide rail; 303-th Three driving parts; 304-second guide rail; 305-vertical plate; 306-reinforced rib plate; 3061-notch groove; 307-horizontal plate; 308-second driving part; 40-pressure mechanism; 401-pressure unit; 4011-contact part; 40111-locking groove; 4012-connection part; 402-rotating shaft; 4021-second section; 4022-first section; 403-fixed seat; 404-first spiral groove; 405-second spiral groove ;

501-sliding seat; 502-side pressure abutting plate; 60-detection unit; 70-battery module placement area; 801-threaded rod; 802-nut.

Detailed ways

The embodiments of the technical solution of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solution of the present application more clearly, and are therefore only used as examples and cannot be used to limit the protection scope of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the technical field belonging to this application; the terms used herein are for the purpose of describing specific embodiments only and are not intended to be used in Limitation of this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

In the description of the embodiments of this application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying the relative importance or implicitly indicating the quantity or specificity of the indicated technical features. Sequence or priority relationship. In the description of the embodiments of this application, "plurality" means two or more, unless otherwise explicitly and specifically limited.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of this application, the term "and/or" is only an association relationship describing associated objects, indicating that there can be three relationships, such as A and/or B, which can mean: A exists alone, and A exists simultaneously and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

In the description of the embodiments of this application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to It is more than two pieces (including two pieces).

In the description of the embodiments of this application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right" and "vertical" The orientation or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship is only for convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific Orientation, construction and operation in specific orientations and therefore should not be construed as limitations on the embodiments of the present application.

In the description of the embodiments of this application, unless otherwise clearly stated and limited, technical terms such as "installation", "connection", "connection" and "fixing" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. It can be disassembled and connected, or integrated; it can also be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

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

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 composed of multiple battery modules connected in series or parallel.

The battery module includes multiple battery cells, and the multiple battery cells are stacked. Multiple battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells are connected in series and in parallel.

Usually, the battery cells in the battery module need to be arranged neatly according to certain rules. During the assembly process of the battery module, the shaping of the battery module refers to the shaping of multiple battery cells so that the battery cells can be arranged neatly. , The shaping of the battery module includes lateral shaping and top shaping. The lateral shaping is to apply pressure on multiple battery cells from the side to make the sides of the battery module flush. The top shaping is to apply pressure on the top of multiple battery cells. Press so the top is flush.

Top shaping is achieved by controlling the downward pressure unit corresponding to the number of battery cells to pressurize the battery cells from top to bottom. In the battery module shaping process, due to the different specifications of battery modules and the number and type of battery cells, the number and spacing of the pressing units need to be adjusted. The adjustment of the number and spacing of the pressing units affects the shaping equipment. important factor in compatibility. The usual battery module shaping mechanism is used to process a specific type of battery module. Therefore, the number of pressing units and the spacing between the pressing units are fixed, and it cannot adapt to the shaping needs of multiple different types of battery modules. Although the push-down unit can be designed as a detachable structure, when the number of battery cells changes, each push-down unit can be disassembled and assembled to make the push-down unit correspond to the battery cells, but this method is cumbersome and complex to operate and inefficient. .

In view of this, this application provides a press-down mechanism in which the distance between two adjacent press-down units is adjustable. This press-down mechanism does not require disassembly and assembly of the press-down units. By adjusting the distance between the two adjacent press-down units, The distance allows the pressing unit to be aligned with each battery cell to meet the shaping process requirements of different types of battery modules, increasing the compatibility of the shaping mechanism and improving production efficiency.

Please refer to FIG. 1 , which is an exploded view of the battery 100 provided by some embodiments of the present application.

The battery 100 includes a case 10 and a plurality of battery cells 201 . The plurality of battery cells 201 are accommodated in the case 10 .

Among them, the box 10 is used to provide accommodating space for the battery cells 201, and the box 10 can adopt a variety of structures. In some embodiments, the box 10 may include a first part 11 and a second part 12 , the first part 11 and the second part 12 covering each other, the first part 11 and the second part 12 jointly defining a space for accommodating the battery cells 201 of accommodation space. 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 covers the open side of the second part 12 so that the first part 11 and the second part 12 jointly define a receiving 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 with the open side of the second part 12. Of course, the box 10 formed by the first part 11 and the second part 12 can be in various shapes, such as cylinder, rectangular parallelepiped, etc.

In the battery 100, there are multiple battery cells 201, and the multiple battery cells 201 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 201 are connected in series and in parallel. Multiple battery cells 201 are first connected in series, parallel, or mixed to form a battery module 20; when the battery includes multiple battery modules 20, the multiple battery modules 20 are then connected in series, parallel, or mixed to form a whole, and are accommodated in inside the box 10.

According to some embodiments of the present application, refer to Figure 2, which is a schematic structural diagram of a pressing mechanism in some embodiments of the present application. This application provides a pressing mechanism 40 for flattening the top surface of the battery module 20. The pressing mechanism 40 includes a fixed base 403, a plurality of pressing units 401 and an adjustment mechanism; a plurality of pressing units 401, It is provided on the fixed base 403 and arranged along the first direction; the adjustment mechanism is provided on the fixed base 403, and the adjustment mechanism is used to adjust the distance between two adjacent pressing units 401.

In the figure, the direction pointed by the X-axis is the first direction.

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.

First, the top surface of the battery module 20 is flush so that the battery cells 201 can be arranged as a whole, which improves the space utilization in the box 10 Usage rate; secondly, the bottom plate of the battery module 20 and the battery cell 201 are bonded with glue. Pressurizing the top of the battery cell 201 can compress and spread the glue evenly, increasing the filling effect of the glue; thirdly, the battery The module 20 also includes components such as busbars and bars. Some components need to be welded to the electrode terminals of the battery cells 201. If the tops of each battery cell 201 are not flush, it may lead to welding defects such as false welding during welding. Therefore, it is very necessary to reshape the top of the battery module 20 to make it flush.

By moving the fixing base 403, each pressing unit 401 presses down on the top surface of the battery module 20, applying pressure to the top surface of the battery module 20, thereby achieving the purpose of shaping the top surface of the battery module 20. Furthermore, since the electrode terminal is usually the highest point in the vertical direction of the battery cell 201, when the battery cell 201 is pressed down, the pressing unit 401 acts on the electrode terminal.

When the battery module 20 is changed, since the sizes of the battery cells 201 in different models of the battery module 20 are different, the spacing between the electrode terminals of two adjacent battery cells 201 is further caused to be different. Therefore, correspondingly, The spacing between the pressing units 401 should also be changed, otherwise the pressing units 401 cannot act on the electrode terminals. The adjustment mechanism can adjust the spacing of each pressing unit 401 to adapt to changes in the spacing of electrode terminals, so that the pressing mechanism 40 can be used for the processing needs of different types of battery modules 20, which improves the compatibility of the device.

Please refer to Figure 3, and please continue to refer to Figure 2. Figure 3 is a schematic structural diagram of a rotating shaft in some embodiments of the present application. According to some embodiments of the present application, optionally, the adjustment mechanism includes a rotating shaft 402 extending along the first direction. A plurality of spiral grooves are provided on the outer circumferential surface of the rotating shaft 402. The spiral grooves extend spirally 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 .

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

The spiral groove and the rotating shaft 402 may have a split structure or an integrated 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 .

When one end of the pressing unit 401 is embedded in the corresponding spiral groove, the end can be clearance-fitted with the spiral groove, or can be slidably fitted so that the end can move relative to the spiral groove.

The pressing units 401 are arranged on the fixed base 403, which means that during the movement of each pressing unit 401 relative to the fixed base 403, the pressing units 401 also maintain a state of sequential arrangement. Specifically, the pressing units can be 401 is slidingly connected to the fixed base 403 or other components, so that the pressing unit 401 moves along the direction in which it is arranged.

When the rotating shaft 402 rotates, the spiral groove rotates accordingly, so that the contact position of the pressing unit 401 and the spiral groove changes. At the same time, the contact position of the pressing unit 401 and the spiral groove moves along the first direction. For the pressing unit 401, The power for moving the pressing unit 401 is provided to realize the purpose of driving the pressing unit 401 to move.

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 circumferential surface of the first section 4022, and the outer circumferential surface of the second section 4021 At least one second spiral groove 405 is provided on the upper body, and the spiral direction of the first spiral groove 404 is opposite to the spiral direction of the second spiral groove 405 .

The division of the first section 4022 and the second section 4021 refers to division along a datum plane perpendicular to the axis of the rotating shaft 402. The rotating shaft 402 is divided into two ends. One side of the datum plane is the first section 4022, and the other side is the first section 4022. One side is the second section 4021.

When adjusting the distance between the two pressing units 401, the movement forms between the two pressing units 401 include the following. Taking the distance becoming larger as an example, the first type is that one of the pressing units 401 remains stationary, and the other The pressing unit 401 moves relative to the stationary pressing unit 401; the second type is that the two pressing units move away from each other at the same time; the third type is that the two pressing units 401 move in the same direction, and their moving speeds are different. . In the case of the same moving speed (in the first case, it refers to the speed of the moving pressing unit 401, in the third case, it refers to the speed of the faster moving pressing unit 401), the second form of movement The time required for movement is the shortest, and the distances moved by each pressing unit 401 are relatively balanced and smaller than the maximum distance moved by the pressing unit 401 in the two cases.

Therefore, the directions of rotation of the first spiral groove 404 and the second spiral groove 405 are opposite, so that the pressing unit 401 embedded in the first spiral groove 404 and the pressing unit 401 embedded in the second spiral groove 405 move in opposite directions when the rotating shaft 402 rotates. That is, in the above second case, on the one hand, the lengths of the first spiral groove 404 and the second spiral groove 405 are within a reasonable range, and when the length of the rotating shaft 402 is constant, the first spiral groove 404 and the second spiral groove 405 are The number is basically the same. On the other hand, the moving distance of each pressing unit 401 is shorter, which increases the number of pressing units 401 controllable by the rotating shaft 402.

Please continue to refer to Figure 3. According to some embodiments of the present application, optionally, the number of the first spiral grooves 404 is multiple. Along the axial direction of the rotating shaft 402 and in the direction away from the second section 4021, the leads of the multiple first spiral grooves 404 are gradually increase.

The rotation of the rotating shaft 402 is parallel to the first direction, which may be the direction pointed by the X-axis in the figure.

The lead of the first spiral groove 404 refers to the distance between adjacent corresponding points of the first spiral groove 404. For example, the rotating shaft 402 is divided by a datum plane parallel to the axis center of the rotating shaft 402, and the first spiral groove 404 is located on the datum. The distance between the two cross sections above the surface is the lead of the first spiral groove 404.

For the pressing units 401 that are all matched with the first spiral groove 404, the moving direction of each pressing unit 401 is the same. Therefore, in order to enable the distance between adjacent pressing units 401 to be adjusted, the adjacent pressing units 401 401 should move at different speeds, that is, the leads of adjacent first spiral grooves 404 should be different. At the same time, in order to enable the spacing between all pressing units 401 that cooperate with the first spiral groove 404 to be adjusted, along the rotation axis 402 In the axial direction and toward the direction away from the second section 4021, the moving distance of the pressing unit 401 gradually increases. Therefore, toward the direction away from the second section 4021, the lead of the first spiral groove 404 should gradually increase.

Please continue to refer to Figure 3. According to some embodiments of the present application, optionally, the number of the second spiral grooves 405 is multiple. Along the axial direction of the rotating shaft 402 and in the direction away from the first section 4022, the leads of the multiple second spiral grooves 405 are gradually increase.

In order to enable the spacing between adjacent pressing units 401 on the second section 4021 to be adjusted, the moving speeds of the adjacent pressing units 401 should be different, that is, the leads of the adjacent second spiral grooves 405 should be different. At the same time, in order to The distance between all the pressing units 401 that cooperate with the second spiral groove 405 can be adjusted. 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 units 401 gradually increases, so , toward the direction away from the first segment 4022, the lead of the second spiral groove 405 should gradually increase.

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

The reference plane here is the reference plane D shown in the figure.

In the above solution, when the first spiral groove 404 and the second spiral groove 405 are symmetrical about the reference plane D, the leads of the first spiral groove 404 and the corresponding second spiral groove 405 are the same, where the corresponding second spiral groove 405 refers to starting from the spiral groove closest to the datum D, the first spiral groove 404 and the second spiral groove 405 in the same sequence have the same lead. For example, the first first spiral groove 404 and the first first spiral groove 405 have the same lead. The leads of the two spiral grooves 405 are the same, and so on.

When the rotating shaft 402 rotates, since the first spiral groove 404 and the second spiral groove 405 have the same lead, the corresponding moving speed and moving distance of the pressing unit 401 are the same, which is convenient for adjustment. In addition, when the lead is the same, it is convenient for the first The spiral groove 404 and the second spiral groove 405 are processed, which reduces the processing difficulty.

According to some embodiments of the present application, optionally, in some embodiments, the leads of the plurality of first spiral grooves 404 are the first arithmetic sequence, and the leads of the plurality of second spiral grooves 405 are the second arithmetic sequence. Sequence, the tolerance of the first arithmetic sequence is d1, the tolerance of the second arithmetic sequence is d2, the lead of the one closest to the datum D among the plurality of first spiral grooves 404 is L, satisfying: d1=d2= 2L.

Since the battery cells 201 in the battery module 20 are arranged in an orderly manner, the spacing between adjacent battery cells 201 is also the same. Furthermore, when the spacing between the respective press-down units 401 is adjusted, the spacing between the respective press-down units 401 should be the same.

In the above solution, the lead of the first spiral groove 404 and the lead of the second spiral groove 405 respectively form an arithmetic sequence, so that when the rotating shaft 402 rotates and the pressing unit 401 cooperates with the first section 4022 of the rotating shaft 402 moves, The pressing units 401 are kept at equal intervals. When the pressing units 401 cooperate with the second section 4021 of the rotating shaft 402 move, the pressing units 401 are kept at equal intervals. Furthermore, d1=d2=2L enables the distance between the pressing units 401 that cooperate with the first spiral groove 404 to be equal to the distance between the pressing units 401 that cooperate with the second spiral groove 405.

Optionally, the starting ends of all the first spiral grooves 404 and the second spiral grooves 405 are on one bus line of the rotating shaft 402, and the ends of all the first spiral grooves 404 and the second spiral grooves 405 are on the other bus line of the rotating shaft 402. above.

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

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 fit with the spiral groove.

The cam follower includes a rotatable wheel body and a fixed end. Its structure is disclosed in the prior art and will not be described again here.

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 into rolling friction, reducing the driving force. The resistance of the pressing unit 401 when it moves, and makes the cooperation between the pressing unit 401 and the spiral groove smoother, reducing the risk of the pressing unit 401 and the spiral groove getting stuck.

Please refer to Figure 4, which is a schematic structural diagram of a pressing unit according to some embodiments of the present application. Optionally, the body of the pressing unit 401 may have the following structure: including a contact portion 4011 and a connection portion 4012. The connection portion 4012 is slidably provided on the fixing base 403, and the contact portion 4011 is used to apply pressure to the battery cell 201. , the contact portion 4011 is provided with a clamping slot 40111, and the clamping slot 40111 is perpendicular to The third direction penetrates the contact portion 4011, and the connection portion 4012 is partially inserted into the slot 40111, so that the contact portion 4011 and the connection portion 4012 are detachably connected. When the contact portion 4011 acts on the battery cell 201 , the reaction force it receives is along the third direction, so the connecting portion 4012 will not come out of the slot 40111.

Optionally, there may be two contact parts 4011 in the same pressing unit 401. As is known, the 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, one side of the battery cell 201 will be stressed more than the other side, reducing the leveling effect. Furthermore, the concentrated stress on the battery cell 201 may cause the battery cell 201 to be stressed beyond the limit, causing safety hazards.

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 base 403 and used to drive the rotating shaft 402 to rotate.

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

The power source of the first driving member can be a motor, and a transmission structure can be provided as needed. The transmission structure can be a 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 motor housing can be fixed on the fixed base 403, and the rotating output end of the motor is coaxially connected to the rotating shaft 402; when a transmission structure is provided, the motor housing can be Fixed on the fixed base 403, the rotation 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.

Please refer to FIG. 5 , which is a schematic three-dimensional structural diagram of a battery module shaping device according to some embodiments of the present application. In a second aspect, the present application provides a battery module shaping device, including: a base 301; a lateral pressing mechanism, movably disposed on the base 301 along the second direction, for flattening the side of the battery module 20; The pressing mechanism 40 in the embodiment is movably disposed on the side pressing mechanism along the third direction, and is used to flatten the top surface of the battery module 20 , and the third direction is perpendicular to the second direction.

In the figure, the second direction is the direction pointed by the Y axis, and the third direction is the direction pointed by the Z axis. For example, when the second direction is the horizontal direction, the third direction can be the vertical direction.

The side pressing mechanism is used to shape the side surface of the battery module 20, and the pressing mechanism 40 is used to shape the top surface of the battery module 20. This device can simultaneously complete the shaping of the side and top surfaces of the battery module 20, thereby improving the shaping efficiency. .

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, which is fixed to the base 301 and extends along the second direction, and the lateral pressure mechanism is slidably disposed on the first guide rail 302; The two guide rails 304 are fixed to the side pressing mechanism and extend along the third direction. The pressing mechanism 40 is slidably disposed on the second guide rail 304 .

Under the action of the first guide rail 302, the purpose of slidingly connecting the lateral pressure mechanism and the base 301 is achieved, and under the action of the second guide rail 304, the purpose of slidingly connecting the downward pressure mechanism 40 and the lateral pressure mechanism is achieved.

It should be noted that the guide rail mentioned in this application includes both the guide rail body and the fitting part that is slidingly connected to the guide rail. The fitting part can be a slide block, or it can be a guide rail provided on a component that is slidably connected to the guide rail. chute through.

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

In the above solution, the first direction, the second direction and the third direction are vertical in pairs, so that when the side pressure mechanism is pressing on the battery cell 201, the pressing unit 401 can also press on the battery cell 201 without adjustment. Improved shaping efficiency.

Please continue to refer to Figure 5, and please further refer to Figures 7 and 8. Figure 7 is a schematic front structural view of the battery module shaping device according to some embodiments of the present application, and Figure 8 is a side view of the battery module shaping device according to some embodiments of the present application. Schematic. 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 the second direction; a third driving member 303, installed on The side pressing mechanism is used to drive the pressing mechanism 40 to move along the third direction.

The second driving member 308 provides the power to move the side pressing mechanism and enables the side pressing mechanism to generate pressure on the battery module 20 . The third driving member 303 provides the power to move the pressing mechanism 40 and enables each pressing unit 401 to move. The battery module 20 is produced to achieve the purpose of shaping the top and side surfaces of the battery module 20 .

The second driving member 308 and the third driving member 303 may be common linear driving structures, such as rack and pinion driving structures, screw driving structures or cylinders.

Taking the second driving member 308 as an example, when driven by a rack and pinion drive structure, the rack and pinion drive structure includes a rack and a gear. The gear is rotated and installed on the base 301. The rack is connected to the side pressure mechanism, and the gear and the rack mesh. When the gear rotates, the rack moves under the drive of the gear to drive the lateral pressure mechanism to move; when driven by the screw drive structure, the screw drive structure includes a screw, and the screw is rotatably connected to the base 301, the lateral pressure mechanism and The screw is threaded and connected. When the screw rotates, the screw of the lateral pressure mechanism moves; When driven by a cylinder, the fixed end of the cylinder is set on the base 301, and the movable end of the cylinder is connected to the side pressure mechanism.

Optionally, the second driving member 308 is a second cylinder, the third cylinder member is a third cylinder, the fixed end of the second cylinder is provided on the base 301, and the movable end of the second cylinder is connected to the side pressure mechanism; The fixed end is arranged on the side pressing mechanism, and the movable end of the third cylinder is connected to the pressing mechanism 40 . The advantage of using a cylinder as a linear drive structure is that the cylinder has a compact structure and takes up little space.

Optionally, the battery module shaping device further includes a support base. The third cylinder is connected to the fixed base 403 through the support base to achieve the purpose of driving the pressing mechanism 40 to move. The support base includes a support base extending in a direction perpendicular to the second direction. The vertical plate 305, the horizontal plate 307 extending along the second direction, and the reinforcing rib 306 are connected. The vertical plate 305 and the horizontal plate 307 are connected, and the reinforcing rib 306 is connected to the vertical plate 305 and the horizontal plate 307 to increase the vertical plate 305 and the horizontal plate. The connection strength is 307, the fixed base 403 is provided on the horizontal plate 307, and the vertical plate 305 is slidably connected to the second guide rail 304, so as to realize the purpose of the downward pressure mechanism 40 being slidably connected to the side pressure mechanism.

Please refer to Figure 6, which is an enlarged schematic diagram of point A in Figure 5. Optionally, the telescopic end of the third cylinder moves along the third direction, the support base is provided with a notch groove 3061, the notch groove 3061 penetrates the support base along the first direction, and the notch groove 3061 extends to the support base along the third direction. On the edge, the notch groove 3061 has a structure with an opening smaller than the inside. The telescopic end of the third cylinder is provided with a limiting component. The limiting component includes a threaded rod 801 and a nut 802. The threaded rod 801 is connected to the telescopic end of the third cylinder, and the nut 802 is threaded. On the threaded rod 801, the nut 802 is clamped in the notch groove 3061 along the first direction and is arranged in the notch groove 3061. Through the limiting effect of the opening of the notch groove 3061, when the telescopic end of the third cylinder moves along the third direction, The pressing mechanism 40 can be moved. The limiting component cooperates with the notch groove 3061 to allow the third cylinder to be detachably connected to the support base, which facilitates installation and maintenance. At the same time, compared to the detachable fixing method, the technical solution of this application is more convenient and faster.

Please refer to Figure 7 and Figure 8. According to some embodiments of the present application, optionally, the second driving member 308 and the lateral pressure mechanism are respectively provided on both sides of the base 301. The base 301 is provided with a through hole 3011. The battery module shaping device also includes a connecting piece. Pass through the through hole 3011 to connect the second driving member 308 and the side pressing mechanism.

The connecting member is used to transmit the torque of the second driving member 308 to the side pressure mechanism, and the connecting member may be a rod.

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

The advantage of the side-by-side arrangement is that it improves space utilization, reduces the number of components on the working side of the base 301, allows a larger battery module 20 to be placed on the base 301, and increases the compatibility of the battery module shaping device.

Please continue to refer to Figure 5, Figure 7 and Figure 8. Optionally, the lateral pressure mechanism may include a lateral pressure abutment plate 502 and a sliding seat 501. The sliding seat 501 is slidably disposed on the first guide rail 302. The connector is connected to the lateral pressure abutment plate 502 or the sliding seat 501. By connecting The side pressure abutting plate 502 abuts against the side of the battery module 20 and applies pressure to achieve the purpose of shaping the side of the battery module 20 . The second guide rail 304 can be disposed on the sliding seat 501 to achieve the purpose of slidably connecting the pressing mechanism 40 to the side pressing mechanism.

Optionally, the sliding base 501 may be provided with a detection unit 60 for detecting the distance moved by the pressing mechanism 40 in the third direction. The detection unit 60 may include a sensor, and the sensor is electrically connected to the processor, and the measurement data of the sensor is processed. After processing by the processor, it is fed back to the user or other control equipment. The working principles of the sensor and the processor are well known and will not be described in detail here.

Please refer to FIG. 9 , which is a schematic structural 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 arranged oppositely along the second direction, and a battery module placement area 70 is formed between the two side pressing mechanisms; the pressing mechanism Two pressing mechanisms 40 are provided and correspond to the side pressing mechanisms one by one. Each pressing mechanism 40 is movably arranged on the corresponding side pressing mechanism along the third direction.

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

A common battery module shaping device for shaping the top and side surfaces of the battery module 20 generally has a split structure for the top surface shaping structure and a side shaping structure, that is, they are independent components. The disadvantage of this structure is that, Since the moving paths of the pressure components of the side shaping structure and the top shaping structure intersect, in order to reduce the risk of interference, the structure of the entire device is larger. For example, the pressure components of the side shaping structure need to pressurize the battery module 20 laterally. In order to reduce the risk of collision of the pressure components of the side shaping structure, the pressure components of the top surface shaping structure need to be arranged on the side shaping structure. on top of the pressed piece.

In this application, the downward pressure mechanism 40 is integrated into the side pressure mechanism, and the movement of the downward pressure unit 401 and the movement of the side pressure mechanism will not interfere with each other, reducing the area occupied by the device; and there are two side pressure mechanisms, one The first is that the number of battery cells 201 that a single pressing mechanism 40 contacts at the same time is reduced, thereby reducing the working pressure of the pressing mechanism 40 and making the volume of the pressing mechanism 40 smaller; secondly, the third driving member 303 drives the holder 403 The movement can drive all the pressing units 401 in one pressing mechanism 40 at the same time. For movement, there is no need to install multiple driving parts, which reduces the structural complexity of the pressing mechanism 40 and improves reliability and processing costs.

According to some embodiments of the present application, referring to Figures 2 to 9, the present application provides a battery module shaping device. The battery module shaping device includes: a base 301; two lateral pressing mechanisms, and the lateral pressing mechanisms move along the second direction Movably arranged on the base 301, two side pressing mechanisms are symmetrically arranged on the base 301, and a battery module placement area 70 is provided in the middle of the two side pressing mechanisms; the two pressing mechanisms 40 in the above embodiment, the pressing mechanisms 40 are movably arranged on the side pressing mechanism along the third direction in one-to-one correspondence. The thickness direction of the base 301 is parallel to the third direction. Both the side pressing mechanism and the downward pressing mechanism 40 are arranged above the base 301.

Two first guide rails 302 are provided on the base 301. The two first guide rails 302 are spaced apart along the first direction, and the two guide rails extend along the second direction. The first direction, the second direction and the third direction are perpendicular to each other.

The side pressure mechanism includes a side pressure abutment plate 502, two sliding seats 501, and a second cylinder. The side pressure abutment plate 502 is used to flatten the side of the battery module 20. The thickness direction of the side pressure abutment plate 502 is parallel to In the first direction, the sliding seat 501 is connected to both sides of the side pressure abutment plate 502 along the first direction. The sliding seat 501 is slidably provided on the first guide rail 302 in one-to-one correspondence. The base 301 is provided with a through hole 3011. The second The cylinder is arranged below the base 301, the fixed end of the second cylinder is connected to the base 301, and the side pressure abutment plate 502 is connected to the movable end of the second cylinder through the through hole 3011 through the connector.

The pressing mechanism 40 includes: a fixed base 403. The sliding base 501 is provided with a second guide rail 304 extending along the third direction. The fixed base 403 is slidably connected to two second guide rails 304 on both sides along the first direction. The sliding seat 501 is also provided with a third cylinder, the fixed end of the third cylinder is connected to the sliding seat 501, and the movable end of the third cylinder is connected to the fixed seat 403; a plurality of pressing units 401 are used to push the top of the battery module 20 The surface is flattened, the fixed base 403 is provided with a third guide rail extending along the first direction, the order placing units are all slidably connected to the third guide rail, the pressing unit 401 and the third guide rail are detachably connected; the rotating shaft 402, the rotating shaft 402 extends along the first direction. The rotating shaft 402 includes a first section 4022 and a second section 4021. The first section 4022 is provided with a plurality of first spiral grooves 404 on its outer circumferential surface, and the second section 4021 is provided with a plurality of first spiral grooves 404 on its outer circumferential surface. The second spiral groove 405, the first spiral groove 404 of the first section 4022 and the second spiral groove 405 of the second section 4021 are symmetrically arranged with respect to the reference plane D perpendicular to the axis center point of the rotating shaft 402 and have opposite rotational directions. The lead of one spiral groove 404 is the first arithmetic sequence, the leads of the plurality of second spiral grooves 405 are the second arithmetic sequence, the tolerance of the first arithmetic sequence is d1, and the tolerance of the second arithmetic sequence 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 from the end of the rotating shaft 402 to the middle of the rotating shaft 402, the first spiral groove 404 and the first spiral groove 404 are The leads of the two spiral grooves 405 gradually decrease.

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 of the pressing unit 401 is provided with a cam follower. The wheel bodies of the cam followers of each pressing unit 401 are arranged in the spiral grooves of the first section 4022 and the second section 4021 in one-to-one correspondence.

In the pressing mechanism 40 of the battery module shaping device, the spacing of the pressing units 401 can be adjusted according to the different battery modules 20, which improves the compatibility of the battery module shaping device. The pressing mechanism 40 is integrated into the side pressing mechanism, reducing The area occupied by the shaping mechanism of the battery module 20 is reduced.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; 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: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present application. The scope shall be covered by the claims and description of this application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (15)

1. A pressing mechanism used to flatten the top surface of the battery module, which includes:

   Fixed seat;

   A plurality of pressing units are provided on the fixed base and arranged along the first direction;

   An adjustment mechanism is provided on the fixed base and is used to adjust the distance between two adjacent pressing units.
2. The push-down mechanism according to claim 1, wherein the adjustment mechanism includes a rotating shaft extending along the first direction, and a plurality of spiral grooves are provided on the outer circumferential surface of the rotating shaft, and the spiral grooves surround The central axis of the rotating shaft extends spirally, one end of each pressing unit is embedded in the corresponding spiral groove, and the other end is used to contact the battery cell.
3. The pressing mechanism according to claim 2, wherein the rotating shaft includes a first section and a second section, at least one first spiral groove is provided on the outer circumference of the first section, and the outer circumference of the second section At least one second spiral groove is provided on the surface, and the spiral direction of the first spiral groove is opposite to the spiral direction of the second spiral groove.
4. The push-down mechanism according to claim 3, wherein the number of the first spiral grooves is multiple, and along the axial direction of the rotating shaft and in a direction away from the second section, a plurality of the first spiral grooves are provided. The lead of the spiral groove gradually increases.
5. The push-down mechanism according to any one of claims 3-4, wherein the number of the second spiral grooves is multiple, along the axial direction of the rotating shaft and in a direction away from the first section, The leads of the plurality of second spiral grooves gradually increase.
6. The push-down mechanism according to any one of claims 3 to 5, wherein the first spiral groove and the second spiral groove are symmetrically arranged with respect to a reference plane, and the reference plane is perpendicular to the center of the rotating shaft. axis and is located between the first section and the second section.
7. The pressing mechanism according to claim 6, wherein the leads of the plurality of first spiral grooves are a first arithmetic sequence, and the leads of the plurality of second spiral grooves are a second arithmetic sequence, so The tolerance of the first arithmetic sequence is d1, the tolerance of the second arithmetic sequence is d2, and the lead of the one closest to the datum among the plurality of first spiral grooves is L, satisfying: d1 =d2=2L.
8. The press-down mechanism according to any one of claims 2-7, wherein the press-down unit includes a body and a cam follower, the cam follower is installed at one end of the body, and the cam follower The actuator is in rolling fit with the spiral groove.
9. The push-down mechanism according to any one of claims 2-7, wherein the push-down mechanism further includes a first driving member installed on the fixed base for driving the rotating shaft. Rotate.
10. A battery module shaping device, which includes:

    base;

    A lateral pressing mechanism, movably disposed on the base along the second direction, is used to flatten the side of the battery module;

    The pressing mechanism according to any one of claims 1 to 9, which is movably disposed on the side pressing mechanism along the third direction and is used to flatten the top surface of the battery module, The third direction is perpendicular to the second direction.
11. The battery module shaping device according to claim 10, wherein the battery module shaping device further includes:

    a second driving member, installed on the base, used to drive the side pressing mechanism to move in the second direction;

    A third driving member is installed on the side pressing mechanism and used to drive the pressing mechanism to move in the third direction.
12. The battery module shaping device according to claim 11, wherein the second driving member and the lateral pressure mechanism are respectively provided on both sides of the base, the base is provided with a through hole, and the battery module The shaping device further includes a connecting piece that passes through the through hole to connect the second driving piece and the lateral pressing mechanism.
13. The battery module shaping device according to any one of claims 10 to 12, wherein there are two lateral pressing mechanisms, and the two lateral pressing mechanisms are arranged oppositely along the second direction, and the two lateral pressing mechanisms are arranged oppositely along the second direction. A battery module placement area is formed between the lateral pressing mechanisms;

    Two of the pressing mechanisms are provided and correspond to the side pressing mechanisms one by one. Each of the pressing mechanisms is movably arranged on the corresponding side pressing mechanism along the third direction.
14. The battery module shaping device according to any one of claims 10 to 13, wherein the battery module shaping device further includes:

    A first guide rail is fixed to the base and extends along the second direction, and the side pressure mechanism is slidably disposed on the first guide rail;

    A second guide rail is fixed to the side pressing mechanism and extends along the third direction. The pressing mechanism is slidably disposed on the second guide rail.
15. The battery module shaping device according to any one of claims 10 to 13, wherein the first direction, the second direction and the third direction are perpendicular to each other.