Stacking equipment and battery production line

Abstract

The utility model relates to stacking equipment and a battery production line, and the stacking equipment comprises a feeding unit which is used for conveying a stacking group along a first direction, and the stacking group comprises a plurality of square single batteries which are arranged at intervals along a second direction; the stacking unit is arranged at the downstream of the feeding unit; a stacking unit configured to push the stacked group in the second direction to form a battery module; the discharging unit is arranged at the downstream of the stacking unit and is used for conveying the battery modules; the first direction and the second direction are arranged in an intersecting manner. The stacking equipment and the battery production line provided by the embodiment of the utility model have the advantage of high assembly efficiency.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a stacking device and a battery production line. Background Art

[0002] Battery cells can be divided into square battery cells and cylindrical battery cells according to their structure and shape. Square battery cells have a special shape and are heavy, and they need to be stacked manually during the assembly process, resulting in low battery assembly efficiency. Utility Model Content

[0003] Based on this, it is necessary to provide a stacking device and a battery production line to address the problem of low assembly efficiency.

[0004] The first aspect of the present application provides a stacking device, comprising: a loading unit, used to convey a stacking group along a first direction, the stacking group comprising a plurality of square battery cells arranged at intervals along a second direction; a stacking unit, arranged downstream of the loading unit; the stacking unit is configured to push each of the square battery cells in the stacking group along the second direction to form a battery module; and a unloading unit, arranged downstream of the stacking unit, used to convey the battery module; the first direction and the second direction are arranged to intersect.

[0005] By setting a loading unit, a stacking unit and a unloading unit, the loading unit conveys the stacking group along a first direction, the stacking unit is arranged downstream of the loading unit, and pushes the stacking group along a second direction, thereby squeezing the gaps between each square battery cell, so that the stacking group is formed into a battery module, and the unloading unit is arranged downstream of the stacking unit, and the unloading unit is used to convey the battery module transferred by the stacking unit, so as to facilitate the subsequent assembly process. The whole process does not require manual operation, which can greatly improve the assembly efficiency.

[0006] In one embodiment, the stacking unit includes two first limiting mechanisms, a lifting mechanism and a side-pushing mechanism; the lifting mechanism is movably arranged along the vertical direction and has a first working state and a second working state; when the lifting mechanism is in the first working state, the lifting mechanism is connected to the loading unit; the two first limiting mechanisms are arranged relatively spaced along the first direction, and when the lifting mechanism is in the second working state, the two first limiting mechanisms can clamp on both sides of the stacking group along the first direction; the side-pushing mechanism is movably arranged on the lifting mechanism along the second direction; the vertical direction, the first direction and the second direction are arranged to intersect each other. In this way, the side-pushing process of the battery module can be carried out continuously and fully automatically, and the first limiting mechanism can prevent tipping and displacement, meet the production rhythm, and the whole process does not require manual operation, which can greatly improve the assembly efficiency.

[0007] In one embodiment, the stacking unit includes a frame; the frame extends along the second direction and is erected above the lifting mechanism; two first limiting mechanisms are respectively arranged on both sides of the frame along the first direction; each first limiting mechanism can move along the first direction and along the vertical direction respectively. By arranging each first limiting mechanism to be able to move along the first direction and along the vertical direction respectively, the two first limiting mechanisms can be clamped on both sides of the directional battery cell along the first direction, providing a limit to prevent each square battery cell from tipping over or shifting during the side-pushing process; the side-pushing process of the battery module can be fully automated and continuously carried out to meet the production rhythm, and the entire process does not require manual operation, which can greatly improve the assembly efficiency.

[0008] In one embodiment, the first limiting mechanism includes a first pressure plate, a first driving member, a third driving member and a connecting frame; the connecting frame is movably arranged on the frame along the first direction, and the first driving member is connected to the connecting frame in a transmission manner; the plate surface of the first pressure plate is arranged parallel to the vertical direction, and the first pressure plate is movably arranged on the connecting frame along the vertical direction; the third driving member is connected to the first pressure plate in a transmission manner. By providing the first driving member, the third driving member and the connecting frame, the side-pushing process of the battery module can be fully automated and continuous, and the first pressure plate can be moved in the first direction and in the vertical direction respectively, ensuring that the first limiting mechanism can provide limiting for the square battery cell and prevent tipping and displacement during the side-pushing process, meeting the production rhythm, and the entire process does not require manual operation, which can greatly improve the assembly efficiency.

[0009] In one embodiment, the first limiting mechanism includes a first guide rail, a first slider, a second guide rail and a second slider; the first guide rail extends along the first direction and is arranged on the frame, the first slider is fixedly connected to the connecting frame and is slidably arranged on the first guide rail; the second guide rail extends along the vertical direction and is arranged on the connecting frame; the second slider is fixedly connected to the first pressure plate and is slidably arranged on the second guide rail. In this way, the above design can reduce the friction during sliding and ensure that the sliding direction does not deviate; ensure that the first limiting mechanism can provide limiting for the square battery cell and prevent tipping and deviation during the side push process, meet the production rhythm, and the entire process does not require manual operation, which can greatly improve the assembly efficiency.

[0010] In one embodiment, the first limiting mechanism includes a first elastic member and a first pressure wheel; the first pressure wheel is arranged on the inner side surface of the first pressure plate close to the lifting mechanism through the first elastic member. In this way, the friction force on each square battery cell when moving along the second direction can be effectively reduced by the first pressure wheel rotating around its own axis, so that the side push mechanism operates stably and effectively prevents the side of the square battery cell from being worn; and the first pressure wheel is arranged on the inner side surface of the first pressure plate close to the lifting mechanism through the first elastic member to avoid hard contact between the first pressure wheel and the square battery cell, and the elastic force of the first elastic member is used to reasonably control the force between each other to avoid crushing the square battery cell.

[0011] In one embodiment, the stacking unit includes a second limiting mechanism disposed on the frame; the second limiting mechanism and the lifting mechanism are relatively spaced apart in the vertical direction; when the lifting mechanism is in the second working state, the lifting mechanism and the second limiting mechanism clamp the two ends of the stacking group in the vertical direction. The second limiting mechanism is used to prevent tipping and offset, so that the side-pushing process of the battery module can be fully automated and continuous, meeting the production cycle, and the entire process does not require manual operation, which can greatly improve assembly efficiency.

[0012] In one embodiment, the second limiting mechanism includes a second pressure plate and a second driving member; the plate surface of the second pressure plate is arranged parallel to the first direction; the second pressure plate is movably arranged at the bottom end of the frame along the vertical direction; and the second driving member is drivingly connected to the second pressure plate.

[0013] In one embodiment, the second limit mechanism includes a second elastic member and a second pressure wheel; the second pressure wheel is arranged on the bottom surface of the second pressure plate facing the lifting mechanism through the second elastic member. The second pressure wheel rotates around its own axis, which can effectively reduce the friction force on each square battery cell when it moves along the second direction, so that the side push mechanism operates stably and effectively prevents the top of the square battery cell from being worn; the second pressure wheel is arranged on the bottom surface of the second pressure plate facing the lifting mechanism through the second elastic member, so as to avoid hard contact between the second pressure wheel and the square battery cell, and use the elastic force of the second elastic member to reasonably control the force between them, so as to avoid crushing the square battery cell.

[0014] In one embodiment, the lifting mechanism includes a lifting plate, a lifting drive and a feeding belt; the feeding belt is arranged on the lifting plate and used to carry the stacking group, and the lifting drive is used to drive the lifting plate to reciprocate in the vertical direction; when the lifting mechanism is in the first working state, the feeding belt and the loading unit are at the same height; when the lifting mechanism is in the second working state, the horizontal plane of the feeding belt is higher than the loading unit. The lifting drive drives the lifting plate to reciprocate in the vertical direction, so that the lifting mechanism can switch between the first working state and the second working state.

[0015] In one embodiment, the side-pushing mechanism includes a side-pushing part, a side-pushing guide rail, and a side-pushing driver; the side-pushing guide rail extends along the second direction and is arranged on the lifting plate, the side-pushing part is movably arranged on the feeding belt and is slidably connected to the side-pushing guide rail, and the side-pushing driver is in transmission connection with the side-pushing part. In this way, the side-pushing part is arranged at one end of the feeding belt along the second direction, and the side-pushing driver drives the side-pushing part to move toward the other end along the second direction; so that the side-pushing part pushes a plurality of spaced square battery cells on the feeding belt to make them fit tightly along the second direction, and finally form a battery module.

[0016] In one embodiment, the loading unit includes a loading conveyor belt; and / or the unloading unit includes a unloading conveyor belt.

[0017] In one of the embodiments, the loading unit includes a loading conveyor belt and a plurality of feeding channels extending along the first direction; all the feeding channels are arranged side by side on the loading conveyor belt along the second direction; and the ends of all the feeding channels are connected to the stacking unit.

[0018] A second aspect of the present application provides a battery production line, comprising the above-mentioned stacking device.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a stacking device provided in some embodiments of the present application.

[0021] Figure 2 for Figure 1 The stacking device is shown in a side view along the second direction, wherein the lifting mechanism is in a first working state.

[0022] Figure 3A schematic diagram of the positions of a loading unit, a first limiting mechanism, a second limiting mechanism, a lifting mechanism, a stacking group and a loading unit provided in some embodiments of the present application, wherein the lifting mechanism is in a first working state.

[0023] Figure 4 A schematic diagram of the positions of a loading unit, a first limiting mechanism, a second limiting mechanism, a lifting mechanism, a stacking group and a unloading unit provided in some embodiments of the present application, wherein the lifting mechanism is in a second working state.

[0024] Figure 5 A schematic structural diagram of a first limiting mechanism provided in some embodiments of the present application.

[0025] Figure 6 for Figure 5 The first limiting mechanism shown is a schematic projection diagram in the second direction.

[0026] Figure 7 A schematic diagram of the positional relationship of a frame, a lifting mechanism, and a side thrust mechanism provided in some embodiments of the present application.

[0027] Figure 8 A schematic diagram of the structure of a stacking device provided in some other embodiments of the present application.

[0028] Description of reference numerals:

[0029] Feeding unit 100, feeding channel 110, feeding conveyor belt 120, stacking unit 200, first limiting mechanism 210, first pressing plate 211, first driving member 212, third driving member 213, connecting frame 214, first guide rail 215, first slider 216, second guide rail 217, second slider 218, first pressing wheel 219, first elastic member 220, lifting mechanism 230, lifting plate 231, lifting driving member 232, feeding belt 233, Side-pushing mechanism-240, side-pushing part-241, side-pushing guide rail-242, side-pushing driver-243, frame-250, wing part-251, frame plate-252, second limiting mechanism-260, second pressure plate-261, second driving member-262, second elastic member-263, second pressure wheel-264, unloading unit-300, unloading conveyor belt-310, stacking group-900a, battery module-900b, square battery cell-910, first direction-X, second direction-Y, vertical direction-Z. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0032] In the description of the embodiments of the present application, if the technical terms "first", "second", etc. appear, these terms are only used for descriptive purposes to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] In the description of the embodiments of the present application, if the term "multiple" appears, "multiple" means at least two (including two), such as two, three, etc., unless otherwise clearly and specifically defined. Similarly, if the term "multiple groups" appears, "multiple groups" means more than two (including two), and if the term "multiple sheets" appears, "multiple sheets" means more than two (including two).

[0036] In the description of the embodiments of the present application, if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the referred 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 the present application.

[0037] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, if the technical terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. 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 the specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0040] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0041] Battery cells can be divided into square battery cells and cylindrical battery cells according to their different structures and shapes. Among them, square battery cells are in the shape of rectangular parallelepiped. During the assembly process, multiple square battery cells are often first attached to each other along the sides with larger areas to stack into a battery module. Since square battery cells are often large in size and mass, it is very labor-intensive to complete this process, resulting in low assembly efficiency and easy bumps, which may cause quality problems for the battery.

[0042] In order to alleviate the problem of low assembly efficiency, a loading unit, a stacking unit and a unloading unit can be designed. The loading is completed through the loading unit, and the stacking unit pushes each square battery cell along the second direction Y to form a battery module, and the unloading is carried out through the unloading unit. The whole process does not require manual operation, which can greatly improve the assembly efficiency.

[0043] The battery of the embodiment of the present application is described below.

[0044] In the battery mentioned in this application, in order to meet different power requirements, the battery may include multiple battery cells and a box body, and the battery cell refers to the smallest unit that constitutes a battery module or a battery pack. Multiple battery cells can be connected in series and / or in parallel via electrode terminals for various applications. The box body is used to accommodate battery cells or battery modules to prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0045] Battery cells can be divided into square battery cells and cylindrical battery cells according to their structures and shapes. The battery cells in the various embodiments of the present application are square battery cells; the square battery cells are rectangular, and during the assembly process, multiple square battery cells are often combined into a battery module.

[0046] The battery module is then placed in the box to form a battery pack. Specifically, multiple battery cells are first connected in series or in parallel or in a mixed connection to form a battery module, and multiple battery modules are then connected in series or in parallel or in a mixed connection to form a whole and accommodated in the box.

[0047] The battery cells in the embodiments of the present application may be secondary batteries or primary batteries; they may also be lithium-sulfur batteries, sodium-ion batteries or magnesium-ion batteries, but are not limited thereto.

[0048] Figure 1 A schematic diagram of the structure of a stacking device provided in some embodiments of the present application. Figure 2 for Figure 1 The stacking device is shown in a side view along the second direction. Figure 3 and Figure 4 All of them are schematic diagrams of the positions of a loading unit, a first limiting mechanism, a second limiting mechanism, a lifting mechanism, a stacking group and a loading unit provided in some embodiments of the present application.

[0049] See also Figures 1 to 4 As shown, a first aspect of the present application provides a stacking device for stacking a plurality of square battery cells 910 into a battery module 900b.

[0050] The stacking device includes: a loading unit 100 , a stacking unit 200 and a unloading unit 300 .

[0051] The loading unit 100 is used to convey the stacking group 900a along the first direction X, and the stacking group 900a includes a plurality of square battery cells 910 arranged at intervals along the second direction Y. The stacking unit 200 is disposed downstream of the loading unit 100; the stacking unit 200 is configured to push each square battery cell 910 in the stacking group 900a along the second direction Y to form a battery module 900b; the unloading unit 300 is disposed downstream of the stacking unit 200, and is used to convey the battery module 900b; the first direction X and the second direction Y are arranged to intersect.

[0052] The loading unit 100 is arranged upstream of the stacking unit 200 along the conveying direction of the square battery cells 910. The loading unit 100 can be used to temporarily store the square battery cells 910, and can arrange multiple square battery cells 910 into multiple columns as needed. The first square battery cells 910 of each column of square battery cells 910 are spaced apart from each other along the second direction Y to form a stacking group 910, which is convenient for feeding into the stacking unit 200.

[0053] Specifically, the loading unit 100 may include a loading conveyor belt 120 . The unloading unit 300 may include a unloading conveyor belt 310 .

[0054] By setting a loading unit 100, a stacking unit 200 and a unloading unit 300, the loading unit 100 conveys the stacking group 900a along a first direction X, the stacking unit 200 is arranged downstream of the loading unit 100, and pushes the stacking group 900a along a second direction Y, thereby squeezing the gaps between the square battery cells 910, so that the stacking group 900a is formed into a battery module 900b, and the unloading unit 300 is arranged downstream of the stacking unit 200. The unloading unit 300 is used to convey the battery module 900b transferred by the stacking unit 200, so as to facilitate the subsequent assembly process. The whole process does not require manual operation, which can greatly improve the assembly efficiency.

[0055] It should be understood that the stacking group 900a is a transitional form of the battery module 900b, and there is no difference in composition between the two except that the square battery cells 910 in the stacking group 900a are spaced apart from each other, while the square battery cells 910 in the battery module 900b are tightly fitted together.

[0056] The first direction X and the second direction Y are arranged to intersect. In various embodiments of the present application, the first direction X can be set as a horizontal direction in a horizontal plane; the second direction Y can be set as another horizontal direction in a horizontal plane; the first direction X and the second direction Y are usually arranged vertically.

[0057] In some possible embodiments, see Figures 1 to 4As shown; the stacking unit 200 includes two first limiting mechanisms 210, a lifting mechanism 230 and a side pushing mechanism 240; the lifting mechanism 230 is movably arranged along the vertical direction Z, and has a first working state and a second working state; when the lifting mechanism 230 is in the first working state, the lifting mechanism 230 is connected to the feeding unit 100; the two first limiting mechanisms 210 are relatively spaced along the first direction X, and when the lifting mechanism 230 is in the second working state, the two first limiting mechanisms 210 can be clamped on both sides of the stacking group 900a along the first direction X; the side pushing mechanism 240 is movably arranged on the lifting mechanism 230 along the second direction Y; the vertical direction Z, the first direction X and the second direction Y are arranged to intersect each other.

[0058] The two first limiting mechanisms 210 are respectively arranged on opposite sides of the lifting mechanism 230 along the first direction X; the two first limiting mechanisms 210 can approach or move away from each other along the first direction X, so as to facilitate the clamping or releasing action.

[0059] Specifically, when the lifting mechanism 230 is in the first working state, the lifting mechanism 230 is connected to the loading unit 100 , the loading unit 100 transports the stacking group 900 a along the first direction X, and the stacking group 900 a is transferred to the lifting mechanism 230 .

[0060] The lifting mechanism 230 switches from the first working state to the second working state; thus, the lifting mechanism 230 drives the stacking group 900a to be lifted to a predetermined height as a whole.

[0061] When the lifting mechanism 230 is in the second working state, the horizontal plane of the lifting mechanism 230 is higher than the loading unit 100; the loading unit 100 can be prevented from interfering with the side-pushing process and the formation of loading accumulation; the two first limiting mechanisms 210 are clamped on both sides of the stacking group 900a along the first direction X, so as to prevent each square battery cell 910 from tipping over or shifting during the side-pushing process; the side-pushing mechanism 240 side-pushes the stacking group 900a on the lifting mechanism 230 along the second direction Y, so that the stacking group 900a is formed into a battery module 900b; after the side-pushing is completed, the two first limiting mechanisms 210 move away from each other along the first direction X to release the limit on the battery module 900b.

[0062] The lifting mechanism 230 drives the battery module 900b to descend as a whole to switch from the second working state to the first working state. The battery module 900b on the lifting mechanism 230 is transferred to the downstream unloading unit 300 and continues to be transferred backward, which is convenient for the subsequent assembly process.

[0063] The loading unit 100 continues to transport the stacking group 900 a along the first direction X, and the stacking group 900 a is transferred to the unloaded lifting mechanism 230 .

[0064] By repeating the above process cycle, the side-pushing process of the battery module 900b can be carried out continuously and fully automatically to meet the production rhythm. The entire process does not require human operation, which can greatly improve the assembly efficiency.

[0065] In various embodiments of the present application, the vertical direction Z, the first direction X, and the second direction Y are arranged to intersect each other. Specifically, the first direction X can be set as a horizontal direction in a horizontal plane; the second direction Y can be set as another horizontal direction in the horizontal plane; the vertical direction Z, the first direction X, and the second direction Y are arranged perpendicular to each other.

[0066] In some possible embodiments, see Figures 1 to 4 As shown, the stacking unit 200 includes a frame 250; the frame 250 extends along the second direction Y and is erected above the lifting mechanism 230; two first limiting mechanisms 210 are respectively arranged on both sides of the frame 250 along the first direction X; each first limiting mechanism 210 can move along the first direction X and along the vertical direction Z respectively.

[0067] In this way, each first limiting mechanism 210 can move along the first direction X and along the vertical direction Z respectively, so that the two first limiting mechanisms 210 can be clamped on both sides of the directional battery cell 910 along the first direction X, providing limitation to prevent each square battery cell 910 from tipping over or shifting during the side pushing process; the side pushing process of the battery module 900b can be carried out continuously and fully automatically to meet the production rhythm, and the entire process does not require manual operation, which can greatly improve the assembly efficiency.

[0068] Specifically, when the lifting mechanism 230 is in the first working state, the lifting mechanism 230 is connected to the loading unit 100, and the loading unit 100 transports the stacking group 900a to the lifting mechanism 230 along the first direction X. Of the two first limiting mechanisms 210, the first limiting mechanism 210 away from the loading unit 100 moves downward along the vertical direction Z, and finally forms a blocking limit on one side of the stacking group 900a along the first direction X, so that the stacking group 900a is kept on the lifting mechanism 230, and the stacking group 900a on the lifting mechanism 230 is prevented from flowing into the unloading unit 300.

[0069] The lifting mechanism 230 switches from the first working state to the second working state; thus, the lifting mechanism 230 drives the stacking group 900a to be lifted to a predetermined height. At the same time, the first limiting mechanism 210 away from the loading unit 100 moves upward along the vertical direction Z synchronously to ensure that the first limiting mechanism 210 and the stacking group 900a are relatively fixed.

[0070] When the lifting mechanism 230 is in the second working state, the horizontal plane of the lifting mechanism 230 is higher than the loading unit 100; the loading unit 100 can be prevented from interfering with the side-pushing process and preventing the formation of loading accumulation; the two first limiting mechanisms 210 are clamped on both sides of the stacking group 900a along the first direction X to provide limiting positions to prevent each square battery cell 910 from tipping over or shifting during the side-pushing process; the side-pushing mechanism 240 side-pushes the stacking group 900a on the lifting mechanism 230 along the second direction Y, so that the stacking group 900a is formed into a battery module 900b; after the side-pushing is completed, the two first limiting mechanisms 210 move away from each other along the first direction X to release the limiting position of the battery module 900b.

[0071] The lifting mechanism 230 drives the battery module 900b to descend as a whole to switch from the second working state to the first working state. At this time, without the limitation of the first limiting mechanism 210, the battery module 900b on the lifting mechanism 230 can be transferred to the downstream unloading unit 300 and continue to be transferred backward, which is convenient for the subsequent assembly process.

[0072] The loading unit 100 continues to transport the stacking group 900 a along the first direction X, and the stacking group 900 a is transferred to the unloaded lifting mechanism 230 .

[0073] Repeating the above process cycle allows the side-pushing process of the battery module 900b to be carried out continuously and fully automatically. The first limiting mechanism 210 is used to prevent tipping and deviation, thereby meeting the production rhythm. The entire process does not require manual operation, which can greatly improve the assembly efficiency.

[0074] Optionally, the entire frame 250 can be made of stainless steel, carbon steel or aluminum alloy with sufficient strength, and the frame 250 has inverted L-shaped wings 251 on both sides along the first direction X; the two first limiting mechanisms 210 are respectively arranged on the wings 251 on both sides of the frame 250.

[0075] Figure 5 A schematic structural diagram of a first limiting mechanism provided in some embodiments of the present application. Figure 6 for Figure 5 The first limiting mechanism shown is a schematic projection diagram in the second direction.

[0076] In some possible embodiments, see Figures 1 to 6As shown, the first limiting mechanism 210 includes a first pressure plate 211, a first driving member 212, a third driving member 213 and a connecting frame 214; the connecting frame 214 is movably arranged on the frame 250 along the first direction X, and the first driving member 212 is transmission connected to the connecting frame 214; the plate surface of the first pressure plate 211 is arranged parallel to the vertical direction Z, and the first pressure plate 211 is movably arranged on the connecting frame 214 along the vertical direction Z; the third driving member 213 is transmission connected to the first pressure plate 211.

[0077] Combination Figure 2 and Figure 6 In the illustrated position, in a first limiting mechanism 210, its connecting frame 214 is movably arranged on the wing 251 on the frame 250 along the first direction X, and the first pressing plate 211 is arranged on the connecting frame 214, so that the connecting frame 214 can drive the first pressing plate 211 to move left and right along the first direction X relative to the frame 250;

[0078] The plate surface of the first pressing plate 211 is arranged parallel to the vertical direction Z, so as to be conveniently clamped on both sides of the stacking group 900a along the first direction X. The first pressing plate 211 is movably arranged on the connecting frame 214 along the vertical direction Z, and the connecting frame 214 and the frame 250 are relatively fixed in the vertical direction Z, so that the first pressing plate 211 can move up and down in the vertical direction Z relative to the frame 250.

[0079] Specifically, when the lifting mechanism 230 is in the first working state, the lifting mechanism 230 is connected to the loading unit 100, and the loading unit 100 transports the stacking group 900a to the lifting mechanism 230 along the first direction X. In the first limiting mechanism 210 away from the loading unit 100, the third driving member 213 drives the first pressing plate 211 to move downward along the vertical direction Z, so that the first pressing plate 211 can reach the height where the stacking group 900a is located, and the first pressing plate 211 forms a blocking limit on one side of the stacking group 900a along the first direction X, so that the stacking group 900a is kept on the lifting mechanism 230, and the stacking group 900a on the lifting mechanism 230 is prevented from flowing into the unloading unit 300.

[0080] The lifting mechanism 230 switches from the first working state to the second working state; thus, the lifting mechanism 230 drives the stacking group 900a to be lifted to a predetermined height. At the same time, in the first limiting mechanism 210 away from the loading unit 100, the third driving member 213 drives the first pressing plate 211 to move synchronously upward along the vertical direction Z to ensure that the first pressing plate 211 of the first limiting mechanism 210 and the stacking group 900a are relatively fixed.

[0081] When the lifting mechanism 230 is in the second working state, the horizontal plane of the lifting mechanism 230 is higher than the loading unit 100; the loading unit 100 can be prevented from interfering with the side pushing process and preventing the loading accumulation; the first driving members 212 of the two first limiting mechanisms 210 drive the corresponding connecting frames 214 to approach each other along the first direction X, and then the connecting frames 214 drive the corresponding first pressing plates 211 to approach each other along the first direction X, and the first pressing plates 211 of the two first limiting mechanisms 210 are clamped together on both sides of the stacking group 900a to provide a limit position, thereby preventing each square battery cell 9 from being stacked. 10 topples or deflects during the side-pushing process; the side-pushing mechanism 240 side-pushes the stacking group 900a on the lifting mechanism 230 along the second direction Y, so that the stacking group 900a is formed into a battery module 900b; after the side-pushing is completed, the first driving members 212 of the two first limiting mechanisms 210 drive the corresponding connecting frames 214 to move away from each other along the first direction X, and then the corresponding first pressing plates 211 are driven by the connecting frames 214 to move away from each other along the first direction X, and the first pressing plates 211 of the two first limiting mechanisms 210 are out of contact with the battery module 900b, thereby releasing the limit.

[0082] The lifting mechanism 230 drives the battery module 900b to descend as a whole to switch from the second working state to the first working state. At this time, without the limitation of the first limiting mechanism 210, the battery module 900b on the lifting mechanism 230 can be transferred to the downstream unloading unit 300 and continue to be transferred backward, which is convenient for the subsequent assembly process.

[0083] The loading unit 100 continues to transport the stacking group 900 a along the first direction X, and the stacking group 900 a is transferred to the unloaded lifting mechanism 230 .

[0084] The above process cycle is repeated so that the side-pushing process of the battery module 900b can be carried out continuously and fully automatically. By setting the first driving member 212, the third driving member 213 and the connecting frame 214, the first pressure plate 211 can move along the first direction X and the vertical direction Z respectively, ensuring that the first limiting mechanism 210 can provide limiting for the square battery cell 910 and prevent tipping and deviation during the side-pushing process, thereby meeting the production rhythm. The entire process does not require manual operation, which can greatly improve the assembly efficiency.

[0085] Optionally, the first pressing plate 211 is generally a rectangular plate; made of stainless steel, carbon steel or aluminum alloy.

[0086] Optionally, the connecting frame 214 is an inverted L-shaped plate, which is usually made of stainless steel, carbon steel or aluminum alloy. The connecting frame 214 is buckled on the inner side of the first pressing plate 211 facing the lifting mechanism 230 .

[0087] Optionally, the first driving member 212 may be a cylinder, a hydraulic cylinder or a stepping motor. The third driving member 213 may be a cylinder, a hydraulic cylinder or a stepping motor.

[0088] In some possible embodiments, see Figures 1 to 6 As shown, the first limiting mechanism 210 includes a first guide rail 215, a first slider 216, a second guide rail 217 and a second slider 218; wherein the first guide rail 215 extends along the first direction X and is set on the frame 250, the first slider 216 is fixedly connected to the connecting frame 214 and is slidably set on the first guide rail 215; the second guide rail 217 extends along the vertical direction Z and is set on the connecting frame 214; the second slider 218 is fixedly connected to the first pressure plate 211 and is slidably set on the second guide rail 217.

[0089] In this way, by setting the first guide rail 215 to extend along the first direction X and fixed on the frame 250, the first slider 216 is fixedly connected to the connecting frame 214 and slidably set on the first guide rail 215; so that the connecting frame 214 can drive the first pressure plate 211 to move left and right along the first direction X relative to the frame 250.

[0090] Similarly, by setting the second guide rail 217 extending along the vertical direction Z and being set on the connecting frame 214; the second slider 218 is fixedly connected to the first pressing plate 211 and slidably set on the second guide rail 217; the connecting frame 214 and the frame 250 are relatively fixed in the vertical direction Z, so that the first pressing plate 211 can move up and down in the vertical direction Z relative to the frame 250;

[0091] In this way, the design of the slider and the guide rail can reduce the friction during the sliding process and ensure that the sliding direction does not deviate; it ensures that the first limiting mechanism 210 can provide limitation for the square battery cell 910 and prevent tipping and deviation during the side pushing process, thereby meeting the production rhythm, and the entire process does not require manual operation, which can greatly improve the assembly efficiency.

[0092] In some possible embodiments, see Figures 1 to 6 As shown, the first limiting mechanism 210 includes a first elastic member 220 and a first pressing wheel 219 ; the first pressing wheel 219 is disposed on the inner side surface of the first pressing plate 211 close to the lifting mechanism 230 through the first elastic member 220 .

[0093] The rotation axis of the first pressing wheel 219 itself is parallel to the vertical direction Z. The first pressing wheel 219 is rotatably arranged on the inner side of the first pressing plate 211. When the two first limiting mechanisms 210 are clamped together on both sides of the stacking group 900a, the first pressing wheel 219 on the first pressing plate 211 is in direct contact with each square battery cell 910 to provide a limit in the first direction X to prevent the square battery cell 910 from tipping over or shifting during the side pushing process; during the side pushing process, the side pushing mechanism 240 applies a force in the second direction Y to the square battery cell 910, and each square battery cell 910 and the first limiting mechanism 210 generate relative movement in the second direction Y. By rotating the first pressing wheel 219 around its own axis, the friction force on each square battery cell 910 when moving in the second direction Y can be effectively reduced, so that the side pushing mechanism 240 operates stably and effectively prevents the side of the square battery cell 910 from being worn.

[0094] In addition, the first pressing wheel 219 applies pressure to the square battery cell 910 along the first direction X to ensure the position limitation. The first pressing wheel 219 is arranged on the inner side of the first pressing plate 211 close to the lifting mechanism 230 through the first elastic member 220 to avoid hard contact between the first pressing wheel 219 and the square battery cell 910, and the elastic force of the first elastic member 220 is used to reasonably control the force between them to avoid crushing the square battery cell 910.

[0095] Optionally, the first elastic member 220 is a spring.

[0096] In some possible embodiments, the first limiting mechanism 210 includes a plurality of first elastic members 220 and a plurality of first pressing wheels 219. In one first limiting mechanism 210, all first pressing wheels 219 are arranged in a row and extend along the second direction Y; the first pressing wheels 219 usually correspond to the middle area of ​​the square battery cell 910 to provide a better limiting effect.

[0097] In some other embodiments, all the first pressing wheels 219 are arranged in two rows, three rows or more rows; the first pressing wheels 219 in each row are arranged at intervals along the vertical direction Z and extend along the second direction Y.

[0098] In some possible embodiments, see Figures 1 to 4 As shown, the stacking unit 200 includes a second limiting mechanism 260 arranged on the frame 250; the second limiting mechanism 260 and the lifting mechanism 230 are relatively spaced apart along the vertical direction Z; when the lifting mechanism 230 is in the second working state, the lifting mechanism 230 and the second limiting mechanism 260 are clamped at both ends of the stacking group 900a along the vertical direction Z.

[0099] Among them, the second limiting mechanism 260 and the lifting mechanism 230 are arranged relatively spaced along the vertical direction Z; the second limiting mechanism 260 is arranged on the frame 250, and the lifting mechanism 230 moves up and down along the vertical direction Z so that the distance between the lifting mechanism 230 and the second limiting mechanism 260 changes, thereby completing the clamping or releasing action.

[0100] Specifically, when the lifting mechanism 230 is in the first working state, the distance between the lifting mechanism 230 and the second limiting mechanism 260 is greater than the height of the square battery cell 910, the lifting mechanism 230 is connected to the loading unit 100, and the loading unit 100 transports the stacking group 900a along the first direction X, and the stacking group 900a is transferred to the lifting mechanism 230.

[0101] The lifting mechanism 230 switches from the first working state to the second working state; thus, the lifting mechanism 230 drives the stacking group 900a to be lifted to a predetermined height as a whole.

[0102] When the lifting mechanism 230 is in the second working state, the horizontal plane of the lifting mechanism 230 is higher than the loading unit 100; the loading unit 100 can be prevented from interfering with the side-pushing process and the formation of loading accumulation; the distance between the lifting mechanism 230 and the second limiting mechanism 260 is reduced, so that the lifting mechanism 230 can be clamped with the second limiting mechanism 260 at both ends of the stacking group 900a along the vertical direction Z, thereby preventing each square battery cell 910 from tipping over or shifting during the side-pushing process; the side-pushing mechanism 240 side-pushes the stacking group 900a on the lifting mechanism 230 along the second direction Y, so that the stacking group 900a is formed into a battery module 900b.

[0103] The lifting mechanism 230 drives the battery module 900b to drop as a whole to switch from the second working state to the first working state. In this way, the lifting mechanism 230 and the second limiting mechanism 260 are separated from each other, so that the second limiting mechanism 260 is separated from the top of the square battery cell 910, which is convenient for subsequent loading and transportation. The battery module 900b on the lifting mechanism 230 is transferred to the downstream unloading unit 300 and continues to be transferred backward, which is convenient for the subsequent assembly process.

[0104] The loading unit 100 continues to transport the stacking group 900 a along the first direction X, and the stacking group 900 a is transferred to the unloaded lifting mechanism 230 .

[0105] Repeating the above process cycle allows the side-pushing process of the battery module 900b to be carried out continuously and fully automatically. The second limiting mechanism 260 is used to prevent tipping and displacement, thereby meeting the production cycle. The entire process does not require manual operation, which can greatly improve assembly efficiency.

[0106] In some possible embodiments, see Figures 1 to 4As shown; the second limiting mechanism 260 includes a second pressing plate 261 and a second driving member 262; the plate surface of the second pressing plate 261 is arranged parallel to the first direction X; the second pressing plate 261 is movably arranged at the bottom end of the frame 250 along the vertical direction Z; the second driving member 262 is transmission-connected to the second pressing plate 261.

[0107] The plate surface of the second pressing plate 261 is arranged parallel to the first direction X, so as to be conveniently clamped at both ends of the stacking group 900a along the vertical direction Z. The second pressing plate 261 is movably arranged at the bottom end of the frame 250 along the vertical direction Z, and the second driving member 262 drives the second pressing plate 261 to move up and down along the vertical direction Z to approach or move away from the lifting mechanism 230.

[0108] Specifically, when the lifting mechanism 230 is in the first working state, the distance between the lifting mechanism 230 and the second pressing plate 261 is greater than the height of the square battery cell 910, the lifting mechanism 230 is connected to the loading unit 100, and the loading unit 100 transports the stacking group 900a along the first direction X, and the stacking group 900a is transferred to the lifting mechanism 230.

[0109] The lifting mechanism 230 switches from the first working state to the second working state; thus, the lifting mechanism 230 drives the stacking group 900a to be lifted to a predetermined height as a whole.

[0110] When the lifting mechanism 230 is in the second working state, the horizontal plane of the lifting mechanism 230 is higher than the loading unit 100; the loading unit 100 can be prevented from interfering with the side-pushing process and the formation of loading accumulation; the second driving member 262 can further drive the second pressure plate 261 to move downward along the vertical direction Z, so that the distance between the lifting mechanism 230 and the second pressure plate 261 is further reduced, so that the lifting mechanism 230 and the second limiting mechanism 260 are clamped at both ends of the stacking group 900a along the vertical direction Z, thereby preventing each square battery cell 910 from tipping over or displacing during the side-pushing process; the side-pushing mechanism 240 pushes the stacking group 900a on the lifting mechanism 230 along the second direction Y, so that the stacking group 900a is formed into a battery module 900b. After the side push is completed, the second pressing plate 261 can be driven by the second driving member 262 to move upward along the vertical direction Z, so that the distance between the lifting mechanism 230 and the second pressing plate 261 becomes larger, so that the second pressing plate 261 is out of contact with the square battery cell 910.

[0111] The lifting mechanism 230 drives the battery module 900b to drop as a whole to switch from the second working state to the first working state. In this way, the lifting mechanism 230 and the second limiting mechanism 260 are further away from each other, which is convenient for subsequent loading and transportation. The battery module 900b on the lifting mechanism 230 is transferred to the downstream unloading unit 300 and continues to be transferred backward, which is convenient for the subsequent assembly process.

[0112] The loading unit 100 continues to transport the stacking group 900 a along the first direction X, and the stacking group 900 a is transferred to the unloaded lifting mechanism 230 .

[0113] Repeating the above process cycle allows the side-pushing process of the battery module 900b to be carried out continuously and fully automatically. The second limiting mechanism 260 is used to prevent tipping and displacement, thereby meeting the production cycle. The entire process does not require manual operation, which can greatly improve assembly efficiency.

[0114] Optionally, the second pressing plate 261 is generally a rectangular plate; made of stainless steel, carbon steel or aluminum alloy.

[0115] Optionally, the second driving member 262 may be a cylinder, a hydraulic cylinder or a stepping motor.

[0116] It is understandable that the first limiting mechanism 210 and the second limiting mechanism 260 can be provided separately or in combination, and their functions are to prevent the square battery cells 910 from tipping over and shifting by providing limits during the side-pushing of the stacking group 900a.

[0117] In some possible embodiments, the two sides of the frame 250 along the first direction X are inverted L-shaped wings 251; the middle part of the frame 250 is a frame plate 252, and the frame plate 252 is used to connect the wings 251 on both sides. The second limiting mechanism 260 is located between the two first limiting mechanisms 210. Specifically, taking the second driving member 262 as a cylinder as an example, the cylinder body of the second driving member 262 is fixed to the bottom end of the frame plate 252, and the telescopic shaft of the second driving member 262 is connected to the second pressing plate 261, so that the second driving member 262 can drive the second pressing plate 261 to move up and down along the vertical direction Z to approach or move away from the lifting mechanism 230.

[0118] In some possible embodiments, see Figures 1 to 6 As shown, the second limiting mechanism 260 includes a second elastic member 263 and a second pressing wheel 264 ; the second pressing wheel 264 is arranged on the bottom surface of the second pressing plate 261 facing the lifting mechanism 230 through the second elastic member 263 .

[0119] The rotation axis of the second pressing wheel 264 is parallel to the first direction X. The second pressing wheel 264 is rotatably arranged on the bottom surface of the second pressing plate 261. When the lifting mechanism 230 and the second limiting mechanism 260 are clamped at both ends of the stacking group 900a along the vertical direction Z, the second pressing wheel 264 on the second pressing plate 261 is in direct contact with the top of each square battery cell 910 to provide a limit in the vertical direction Z, thereby preventing the square battery cell 910 from tipping over or deflecting during the side push process.

[0120] During the side-pushing process, the side-pushing mechanism 240 applies a force along the second direction Y to the square battery cells 910, and each square battery cell 910 and the second limiting mechanism 260 generate relative movement along the second direction Y. The second pressure wheel 264 rotates around its own axis, which can effectively reduce the friction force on each square battery cell 910 when moving along the second direction Y, so that the side-pushing mechanism 240 can operate stably and effectively prevent the top of the square battery cell 910 from being worn.

[0121] The second pressing wheel 264 applies pressure in the vertical direction Z to the square battery cell 910 to ensure the position limit. The second pressing wheel 264 is arranged on the bottom surface of the second pressing plate 261 facing the lifting mechanism 230 through the second elastic member 263 to avoid hard contact between the second pressing wheel 264 and the square battery cell 910. The elastic force of the second elastic member 263 is used to reasonably control the force between them to avoid crushing the square battery cell 910.

[0122] Optionally, the second elastic member 263 is a spring.

[0123] In some possible embodiments, see Figures 1 to 4 As shown, the second limiting mechanism 260 includes a plurality of second elastic members 263 and a plurality of second pressing wheels 264. All the second pressing wheels 264 are arranged in two rows along the second direction Y. The two rows of second pressing wheels 264 usually correspond to the two side areas of the top surface of the square battery cell 910, and the two side areas usually avoid the pole ears. In this way, the limiting mechanism 260 can be provided without damaging the square battery cell 910, and the deflection caused by the limiting mechanism on one side can be avoided.

[0124] Figure 7 A schematic diagram of the positional relationship of a frame, a lifting mechanism, and a side thrust mechanism provided in some embodiments of the present application.

[0125] In some possible embodiments, see Figures 1 to 7 As shown, the lifting mechanism 230 includes a lifting plate 231, a lifting drive 232 and a feeding belt 233; the feeding belt 233 is arranged on the lifting plate 231 for carrying the stacking group 900a, and the lifting drive 232 is used to drive the lifting plate 231 to reciprocate along the vertical direction Z; when the lifting mechanism 230 is in the first working state, the feeding belt 233 and the loading unit 100 are at the same height; when the lifting mechanism 230 is in the second working state, the horizontal plane of the feeding belt 233 is higher than the loading unit 100.

[0126] Specifically, when the lifting mechanism 230 is in the first working state, the feeding belt 233 and the loading unit 100 are at the same height; the feeding belt 233 is connected to the loading unit 100, and the loading unit 100 transports the stacking group 900a along the first direction X, and the stacking group 900a is transferred to the feeding belt 233.

[0127] When the lifting mechanism 230 switches from the first working state to the second working state, the lifting driving member 232 drives the lifting plate 231 to move upward along the vertical direction Z. In this way, the lifting plate 231 drives the feeding belt 233 to move upward, thereby lifting the stacking group 900a as a whole to a predetermined height.

[0128] When the lifting mechanism 230 is in the second working state, the horizontal plane of the feeding belt 233 is higher than the loading unit 100; the loading unit 100 can be prevented from interfering with the side-pushing process and the loading can be prevented from piling up; the two first limiting mechanisms 210 are clamped on both sides of the stacking group 900a along the first direction X, and the feeding belt 233 and the second limiting mechanism 260 are clamped on both ends of the stacking group 900a along the vertical direction Z, so as to prevent each square battery cell 910 from tipping over or shifting during the side-pushing process; the side-pushing mechanism 240 side-pushes the stacking group 900a on the lifting mechanism 230 along the second direction Y, so that the stacking group 900a is formed into a battery module 900b; after the side-pushing is completed, the two first limiting mechanisms 210 move away from each other along the first direction X to release the limit of the battery module 900b along the first direction X, and the feeding belt 233 and the second limiting mechanism 260 of the lifting mechanism 230 move away from each other to release the limit of the battery module 900b along the vertical direction Z.

[0129] The lifting mechanism 230 drives the battery module 900b to drop as a whole to switch from the second working state to the first working state. At this time, there is no limitation of the first limiting mechanism 210 and the second limiting mechanism 260, and the feeding belt 233 continues to convey the battery module 900b along the first direction X. The battery module 900b passes through the unloading unit 300 and continues to be transferred backward, which is convenient for the subsequent assembly process.

[0130] The loading unit 100 continues to transport the stacking group 900 a along the first direction X, and the stacking group 900 a is transferred to the empty feeding belt 233 .

[0131] The above process cycle is repeated so that the side-pushing process of the battery module 900b can be carried out continuously and fully automatically. The joint limiting of the first limiting mechanism 210 and the second limiting mechanism 260 can prevent tipping and displacement, meet the production rhythm, and the entire process does not require manual operation, which can greatly improve the assembly efficiency.

[0132] Optionally, the lifting drive member 232 may be a cylinder, a hydraulic cylinder or a stepping motor;

[0133] In some possible embodiments, see Figures 1 to 7 As shown, the side-pushing mechanism 240 includes a side-pushing portion 241, a side-pushing guide rail 242, and a side-pushing driver 243;

[0134] The side push rail 242 extends along the second direction Y and is disposed on the lifting plate 231 . The side push portion 241 is movably disposed on the feeding belt 233 and is slidably connected to the side push rail 242 . The side push driver 243 is transmission-connected to the side push portion 241 .

[0135] The side push part 241 is movably arranged on the feeding belt 233 and is slidably connected to the side push guide rail 242. When the lifting mechanism 230 is in the second working state, under the joint action of either or both of the first limiting mechanism 210 and the second limiting mechanism 260, sufficient limiting is provided to prevent each square battery cell 910 from tipping over or shifting during the side pushing process; the side push part 241 is arranged at one end of the feeding belt 233 along the second direction Y, and the side push driver 243 drives the side push part 241 to move toward the other end along the second direction Y; in this way, the side push part 241 pushes a plurality of spaced square battery cells 910 located on the feeding belt 233, so that they are tightly fitted along the second direction Y to form a battery module 900b; after the side pushing is completed, the limiting of the battery module 900b is cancelled.

[0136] Optionally, the side thrust driver 243 may be a pneumatic cylinder, a hydraulic cylinder or a stepping motor.

[0137] Optionally, the side thrust portion 241 is a square plate, which can be made of stainless steel, carbon steel or aluminum alloy and has sufficient strength.

[0138] Figure 8 A schematic diagram of the structure of a stacking device provided in some other embodiments of the present application.

[0139] In some possible embodiments, see Figure 8 As shown, the loading unit 100 includes a loading conveyor belt 120 and a plurality of feeding channels 110 extending along a first direction X; all feeding channels 110 are arranged side by side on the loading conveyor belt 120 along a second direction Y; and the ends of all feeding channels 110 are connected to the stacking unit 200. Each feeding channel 110 can limit the corresponding square battery cell 910 along the second direction Y.

[0140] Each feeding channel 110 is formed by connecting multiple hollow metal shells or hollow plastic shells with openings at both ends end to end along the first direction X. The inner cavity wall of the feeding channel 110 can limit the corresponding square battery cells 910 along the second direction Y to prevent the square battery cells 910 from tipping over or shifting on the feeding conveyor belt 120; combined with the stacking unit 200 and the unloading unit 300, the production rate of the stacking device is improved, and the whole process does not require manual operation, which can ultimately greatly improve the battery assembly efficiency.

[0141] A second aspect of the present application provides a battery production line, comprising the above-mentioned stacking device.

[0142] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0143] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A stacking device, characterized in that: The stacking device comprises: A loading unit (100) is used to convey a stacking group (900a) along a first direction (X), wherein the stacking group (900a) comprises a plurality of square battery cells (910) arranged at intervals along a second direction (Y); A stacking unit (200) is disposed downstream of the loading unit (100); the stacking unit (200) is configured to push each of the square battery cells (910) in the stacking group (900a) along the second direction (Y) to form a battery module (900b); and a material unloading unit (300), arranged downstream of the stacking unit (200) and used for conveying the battery module (900b); The first direction (X) and the second direction (Y) are arranged to intersect.

2. The stacking device according to claim 1, characterized in that The stacking unit (200) comprises two first limiting mechanisms (210), a lifting mechanism (230) and a side pushing mechanism (240); The lifting mechanism (230) is movably arranged along the vertical direction (Z), and has a first working state and a second working state; When the lifting mechanism (230) is in the first working state, the lifting mechanism (230) is connected to the loading unit (100); The two first limiting mechanisms (210) are arranged relatively spaced apart along the first direction (X), and when the lifting mechanism (230) is in the second working state, the two first limiting mechanisms (210) can be clamped on both sides of the stacking group (900a) along the first direction (X); The side thrust mechanism (240) is movably arranged on the lifting mechanism (230) along the second direction (Y); The vertical direction (Z), the first direction (X) and the second direction (Y) are arranged to intersect each other.

3. The stacking device according to claim 2, characterized in that The stacking unit (200) comprises a frame (250); The frame (250) extends along the second direction (Y) and is erected above the lifting mechanism (230); the two first limiting mechanisms (210) are respectively arranged on both sides of the frame (250) along the first direction (X); Each of the first limiting mechanisms (210) is capable of moving respectively along the first direction (X) and along the vertical direction (Z).

4. The stacking device according to claim 3, characterized in that The first limiting mechanism (210) comprises a first pressing plate (211), a first driving member (212), a third driving member (213) and a connecting frame (214); The connecting frame (214) is movably arranged on the frame (250) along the first direction (X), and the first driving member (212) is drivingly connected to the connecting frame (214); The plate surface of the first pressing plate (211) is arranged parallel to the vertical direction (Z), and the first pressing plate (211) is movably arranged on the connecting frame (214) along the vertical direction (Z); and the third driving member (213) is drivingly connected to the first pressing plate (211).

5. The stacking device according to claim 4, characterized in that The first limiting mechanism (210) comprises a first guide rail (215), a first sliding block (216), a second guide rail (217) and a second sliding block (218); The first guide rail (215) extends along the first direction (X) and is arranged on the frame (250); the first sliding block (216) is fixedly connected to the connecting frame (214) and is slidably arranged on the first guide rail (215); The second guide rail (217) extends along the vertical direction (Z) and is arranged on the connecting frame (214); the second sliding block (218) is fixedly connected to the first pressing plate (211) and is slidably arranged on the second guide rail (217).

6. The stacking device according to claim 4, characterized in that The first limiting mechanism (210) comprises a first elastic member (220) and a first pressing wheel (219); The first pressing wheel (219) is arranged on the inner side surface of the first pressing plate (211) close to the lifting mechanism (230) via the first elastic member (220).

7. The stacking device according to any one of claims 3 to 6, characterized in that: The stacking unit (200) comprises a second limiting mechanism (260) arranged on the frame (250); The second limiting mechanism (260) and the lifting mechanism (230) are arranged relatively spaced apart along the vertical direction (Z); When the lifting mechanism (230) is in the second working state, the lifting mechanism (230) and the second limiting mechanism (260) are clamped at two ends of the stacking group (900a) along the vertical direction (Z).

8. The stacking device according to claim 7, characterized in that The second limiting mechanism (260) comprises a second pressing plate (261) and a second driving member (262); The plate surface of the second pressing plate (261) is arranged parallel to the first direction (X); the second pressing plate (261) is movably arranged at the bottom end of the frame (250) along the vertical direction (Z); The second driving member (262) is in transmission connection with the second pressing plate (261).

9. The stacking device according to claim 8, characterized in that The second limiting mechanism (260) comprises a second elastic member (263) and a second pressing wheel (264); The second pressing wheel (264) is arranged on the bottom surface of the second pressing plate (261) facing the lifting mechanism (230) via the second elastic member (263).

10. The stacking device according to any one of claims 2 to 6, characterized in that: The lifting mechanism (230) comprises a lifting plate (231), a lifting driving member (232) and a feeding belt (233); The feeding belt (233) is arranged on the lifting plate (231) and is used to carry the stacking group (900a); the lifting driving member (232) is used to drive the lifting plate (231) to reciprocate along the vertical direction (Z); When the lifting mechanism (230) is in the first working state, the feeding belt (233) and the loading unit (100) are at the same height; When the lifting mechanism (230) is in the second working state, the horizontal plane of the feeding belt (233) is higher than the loading unit (100).

11. The stacking device according to claim 10, characterized in that The side-pushing mechanism (240) comprises a side-pushing portion (241), a side-pushing guide rail (242) and a side-pushing driver (243); The side-push guide rail (242) extends along the second direction (Y) and is arranged on the lifting plate (231); the side-push portion (241) is movably arranged on the feeding belt (233) and is slidably connected to the side-push guide rail (242); and the side-push driver (243) is transmission-connected to the side-push portion (241).

12. The stacking device according to any one of claims 1 to 6, characterized in that: The loading unit (100) comprises a loading conveyor belt (120); and / or, The unloading unit (300) comprises an unloading conveyor belt (310).

13. The stacking device according to any one of claims 1 to 6, characterized in that: The loading unit (100) comprises a loading conveyor belt (120) and a plurality of feeding channels (110) extending along the first direction (X); all the feeding channels (110) are arranged side by side on the loading conveyor belt (120) along the second direction (Y); The ends of all the feeding channels (110) are connected to the stacking unit (200).

14. A battery production line, characterized in that: Comprising a stacking device as claimed in any one of claims 1 to 13.

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