Lamination assembly

Abstract

The utility model provides a lamination assembly, which can reduce the influence of the vibration of a lamination table on other manufacturing processes of a battery cell, and comprises the lamination table and a connecting table, the lamination table comprises a first connecting structure and is suitable for placing a diaphragm and a pole piece and driving the diaphragm to reciprocate; the connecting table comprises a second connecting structure; wherein the lamination assembly has a first state and a second state, when the lamination assembly is in the first state, the lamination tables and the connecting tables are arranged at intervals, the lamination tables and the connecting tables can jointly manufacture battery cells, and when the lamination assembly is in the second state, the first connecting structures are connected with the second connecting structures so as to fix the relative positions of the lamination tables and the connecting tables. According to the lamination assembly disclosed by the utility model, the lamination table and the connecting table can be separately arranged or mutually connected, so that on one hand, vibration can be prevented from being transmitted between the lamination table and the connecting table to improve the manufacturing quality, and on the other hand, all parts of the lamination assembly can be conveniently transported together.

Description

Technical Field

[0001] The utility model relates to the field of battery manufacturing, in particular to a stacking assembly. Background Art

[0002] At present, the battery cell manufacturing equipment of lithium-ion batteries mainly includes winding machines and stacking machines. The relatively mature process of manufacturing battery cells by stacking machines is: using a manipulator to grab and stack the cut single-piece composite sheets, so that the incoming pole pieces enter the swinging assembly, and the swinging assembly drives the diaphragm and pole pieces to swing at a certain angle. After reaching the set position, the diaphragm and pole pieces are flattened, and this cycle is repeated. When the predetermined number of pieces are stacked, the cutter cuts the pole pieces. The main disadvantage of this method is that the existing stacking machine often integrates various working components into one device. During the reciprocating motion of the swinging assembly, a large vibration will be generated, which will be further transmitted to other stations, thereby affecting the working accuracy or position accuracy of other stations. For example, the vibration of the swinging assembly will be transmitted to the manipulator, which reduces the transmission accuracy of the manipulator. The vibration of the swinging assembly will also be transmitted to the deviation correction device and the unwinding device, resulting in the positional deviation of the two. The above-mentioned various vibration transmissions will cause the quality of the manufactured battery cells to deteriorate. If the various working components of the stacking machine are set independently, the integrity of the stacking machine is poor, and the transportation and connection process of each component is cumbersome. Utility Model Content

[0003] The main purpose of the utility model is to provide a lamination assembly, which can reduce the influence of the vibration of the lamination table on other manufacturing processes of the battery core.

[0004] To achieve the above purpose, the embodiment of the utility model adopts the following technical solutions:

[0005] A laminate assembly, used for manufacturing a battery core, comprising:

[0006] The lamination platform comprises a first connection structure, and the lamination platform is suitable for placing the diaphragm and the pole piece and driving the diaphragm to reciprocate;

[0007] A connecting platform including a second connecting structure;

[0008] Among them, the lamination assembly has a first state and a second state. When the lamination assembly is in the first state, the lamination table and the connecting table are arranged at intervals, and the lamination table and the connecting table can jointly manufacture battery cells. When the lamination assembly is in the second state, the first connecting structure is connected to the second connecting structure to fix the relative position of the lamination table and the connecting table.

[0009] In some embodiments, the first connecting structure includes an abutment member, and the second connecting structure includes an abutment surface. When the stack assembly is in the second state, the abutment member abuts against the abutment surface; and / or, when the stack assembly is in the second state, the first connecting structure and the second connecting structure form a screw connection; and / or, when the stack assembly is in the second state, the first connecting structure and the second connecting structure form a snap connection.

[0010] In some embodiments, the connecting platform has a through hole extending along a first direction, and the stacking platform includes a first end and a second end arranged relatively to each other along the first direction, the first end is used to place the diaphragm, the pole piece and drive the diaphragm to reciprocate, and the second end is connected to the first connecting structure. Along the first direction, the stacking platform is penetrated by the through hole so that the first end is located on one side of the through hole and the second end is located on the other side of the through hole.

[0011] In some embodiments, the orthographic projection of the first connecting structure on a plane perpendicular to the first direction is a first projection, and the orthographic projection of the edge of the perforated hole on a plane perpendicular to the first direction is a second projection. The second direction is perpendicular to the first direction, and along the second direction, the length of the first projection is greater than the length of the second projection.

[0012] In some embodiments, the third direction is perpendicular to the first direction and the second direction, and a length of the first projection along the second direction is greater than a length of the first projection along the third direction.

[0013] In some embodiments, the lamination table further includes a bracket, the bracket is penetrated in the through hole along the first direction, and the first connecting structure is slidably connected to the bracket to adjust the relative position of the first connecting structure and the second connecting structure along the first direction.

[0014] In some embodiments, the connecting platform includes a first plate body and a second plate body arranged relative to each other along a first direction, the first plate body and the second plate body jointly define a cavity, the first plate body has a through hole extending along the first direction, the stacking platform is penetrated by the through hole so that the first connecting structure is located in the cavity, the first plate body is configured to limit the displacement of the first connecting structure along the first direction, and the second plate body is configured to limit the displacement of the first connecting structure in the opposite direction of the first direction.

[0015] In some embodiments, the connecting platform includes a first plate body, the first plate body has a through hole extending along a first direction, the stacking platform is penetrated by the through hole, along the first direction, the cross-section of the first connecting structure is rectangular, and along the first direction, the edge of the rectangle is configured to abut against a side of the first plate body close to the first connecting structure.

[0016] In some embodiments, when the stacking assembly is in the first state, it is suitable for being placed on a connecting surface, and the stacking platform also includes a fixing portion. When the stacking assembly is configured to be in the first state, the fixing portion is suitable for connecting to a connecting surface to fix the relative position of the stacking platform and the connecting surface.

[0017] In some embodiments, the connection platform also includes a clamping device, which is used to move the electrode sheet and place the electrode sheet on the stacking platform; and / or, the connection platform also includes a feeding device, which is used to provide the electrode sheet to the stacking platform; and / or, the connection platform also includes a discharging device, which is used to move the battery cell; and / or, the connection platform also includes a unwinding device, which is used to provide a diaphragm; and / or, the connection platform also includes a detection device, which is used to detect the position of the electrode sheet or the battery cell.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The lamination assembly includes a lamination table and a connection table. When the lamination assembly is in a first state, the lamination table and the connection table are arranged at intervals, and the lamination table and the connection table can jointly manufacture battery cells. That is, the lamination table and the connection table can be unconnected, and the lamination table and the connection table can jointly manufacture battery cells through cooperation. When the lamination assembly is in a second state, the first connection structure is connected to the second connection structure to fix the relative position of the lamination table and the connection table. That is, the first connection structure and the second connection structure can be fixedly connected so that the lamination table is fixed to the connection table. The detachable connection between the lamination table and the connection table formed by the above-mentioned setting can avoid the transmission of vibration between the lamination table and the connection table when the lamination assembly is in the first state, and can also facilitate the adjustment of the relative position of the lamination table and the connection table according to manufacturing requirements; when the lamination assembly is in the second state, it is convenient to transport the lamination table and the connection table together. Therefore, the lamination assembly of the utility model can make the lamination table and the connecting table separately arranged or interconnected, so as to avoid the transmission of vibration between the lamination table and the connecting table to improve the manufacturing quality on the one hand, and facilitate the joint transportation of various parts of the lamination assembly on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 It is an exploded schematic diagram of a lamination assembly provided in a first embodiment of the utility model;

[0022] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0023] Figure 3 A first side schematic diagram of a lamination assembly provided in a second embodiment of the utility model;

[0024] Figure 4 This is a second side schematic diagram of a lamination assembly provided in a second embodiment of the utility model; wherein the lamination assembly is in a first state;

[0025] Figure 5 This is a second side schematic diagram of a lamination assembly provided in a second embodiment of the present invention; wherein the lamination assembly is in a second state;

[0026] Figure 6 It is a three-dimensional schematic diagram of a lamination table provided in a third embodiment of the utility model;

[0027] Figure 7 It is a partial schematic diagram of a lamination assembly provided in the third embodiment of the utility model.

[0028] Description of Figure Numbers:

[0029] 100- lamination assembly;

[0030] 110-lamination platform; 111-first connecting structure; 112-first end; 113-second end;

[0031] 120-connecting platform; 121-second connecting structure; 122-perforation; 123-first plate body; 124-second plate body; 125-cavity;

[0032] 130-Stand;

[0033] 140-fixed part;

[0034] 200-connection surface;

[0035] S1-first projection;

[0036] S2 - second projection;

[0037] X-first direction;

[0038] Y-second direction;

[0039] Z - third direction.

[0040] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0044] At present, the battery cell manufacturing equipment of lithium-ion batteries mainly includes winding machines and stacking machines. The relatively mature process of manufacturing battery cells by stacking machines is: using a manipulator to grab and stack the cut single-piece composite sheets, so that the incoming pole pieces enter the swinging assembly, and the swinging assembly drives the diaphragm and pole pieces to swing at a certain angle. After reaching the set position, the diaphragm and pole pieces are flattened, and this cycle is repeated. When the predetermined number of pieces are stacked, the cutter cuts the pole pieces. The main shortcomings of this method are: the existing stacking machines often integrate various working components into one device. During the reciprocating motion of the swinging assembly, a large vibration will be generated, which will be further transmitted to other stations, thereby affecting the working accuracy or position accuracy of other stations. For example, the vibration of the swinging assembly will be transmitted to the manipulator, which reduces the transmission accuracy of the manipulator. The vibration of the swinging assembly will also be transmitted to the deviation correction device and the unwinding device, resulting in the positional deviation of the two. The above-mentioned various vibration transmissions will cause the quality of the manufactured battery cells to deteriorate. If the various working components of the stacking machine are set independently, the integrity of the stacking machine is poor, and the transportation and connection process of each component is cumbersome.

[0045] In view of this, see Figure 1-Figure 7 In an embodiment of the utility model, a lamination assembly 100 is provided for manufacturing a battery cell. It is understandable that the lamination assembly 100 can be used in a manufacturing process of a stacked battery cell, and the lamination assembly 100 can be used to complete the entire manufacturing process of the stacked battery cell, or can be used to complete a partial manufacturing process of the stacked battery cell. The lamination assembly 100 includes a lamination table 110 and a connection table 120.

[0046] Among them, see Figure 1-Figure 2 , the stacking table 110 includes a first connecting structure 111. The stacking table 110 is suitable for placing diaphragms, pole pieces, and driving the diaphragms to reciprocate. Based on the above functions, the stacking table 110 may include a placement component and a drive component. Among them, the placement component can be used to place the stacked diaphragms and pole pieces so that the diaphragms and pole pieces can form a battery cell through stacking; the drive component can be used to drive the placement component or the diaphragm to reciprocate in a direction perpendicular to the stacking direction, so that the diaphragm and the pole pieces can form a stacked structure after further compressing the diaphragm. The specific form and configuration of the placement component and the drive component can refer to the prior art and will not be repeated here.

[0047] See also Figure 1-Figure 2 , the connection platform 120 includes a second connection structure 121. The connection platform 120 may be a component for supporting and connecting the lamination platform 110 or other components. Therefore, the specific structure of the connection platform 120 may depend on the second connection structure 121 and the structure to be connected to the connection platform 120. The connection platform 120 may also include other components corresponding to the cell manufacturing process, so that the connection platform 120 can manufacture cells together with the lamination platform 110. Please refer to the following for the specific form.

[0048] The lamination assembly 100 has a first state and a second state. Figure 3-Figure 4When the lamination assembly 100 is in the first state, the lamination stage 110 and the connection stage 120 are arranged at intervals, and the lamination stage 110 and the connection stage 120 can jointly manufacture the battery cell. It can be understood that when the lamination assembly 100 is in the first state, the lamination stage 110 and the connection stage 120 are not connected, and the lamination stage 110 and the connection stage 120 can jointly manufacture the battery cell through cooperation. Therefore, as described above, in some embodiments, according to the functions of the connecting platform 120, the stacking platform 110 and the connecting platform 120 can form different cooperative manufacturing effects. Specifically, when the stacking assembly 100 is in the first state, in some embodiments, the connecting platform 120 can connect the various components required for the stacking operation, such as a clamping device for transferring the pole piece, etc. For example, in some embodiments, the connecting platform 120 can also be used to transfer the pole piece, so that when the stacking assembly 100 is in the first state, the connecting platform 120 can place the pole piece on the diaphragm of the stacking platform 110, and then complete the stacking of the diaphragm and the pole piece through the driving action of the stacking platform 110; in other embodiments, the connecting platform 120 can also include various components required for connecting the stacking operation, that is, the connecting platform 120 can have the functions of placing the pole piece, transferring the pole piece, etc. For the specific form of this type of embodiment, please refer to the following text. In particular, the stacking table 110 and the connecting table 120 are arranged at a distance so that the two can be configured to manufacture battery cells without affecting the operation of the other due to the vibration of one, thus avoiding the transmission of vibration between the stacking table 110 and the connecting table 120, which is beneficial to reducing the vibration amplitude of the stacking assembly 100 as a whole. When the connecting table 120 includes (or connects) various components required for the stacking operation, the vibration transmission from the stacking table 110 to each component can be reduced. In addition, the spacing arrangement can also facilitate the adjustment of the relative position of the stacking table 110 and the connecting table 120 according to manufacturing requirements. Figure 5 , when the lamination assembly 100 is in the second state, the first connection structure 111 is connected to the second connection structure 121 to fix the relative position of the lamination stage 110 and the connection stage 120. It can be understood that when the lamination assembly 100 is in the second state, the first connection structure 111 and the second connection structure 121 can be fixedly connected so that the lamination stage 110 is fixed to the connection stage 120. Connecting the lamination stage 110 and the connection stage 120 can facilitate the joint transportation of the lamination stage 110 and the connection stage 120 to improve the integrity of the lamination assembly 100. Based on the above description of each state, in some embodiments, the first state can correspond to the state when the lamination assembly 100 is working, that is, the state when the lamination assembly 100 manufactures the battery cell; the second state can correspond to the state when the lamination assembly 100 needs to be transported, that is, the lamination stage 110 and the connection stage 120 are fixedly connected so that they can be conveniently transported at the same time.

[0049] According to the combination of the above embodiments, it can be seen that in some embodiments, the lamination assembly 100 includes a lamination table 110 and a connection table 120. When the lamination assembly 100 is in the first state, the lamination table 110 and the connection table 120 are arranged at intervals, and the lamination table 110 and the connection table 120 can jointly manufacture battery cells. That is, the lamination table 110 and the connection table 120 may not be connected, and the lamination table 110 and the connection table 120 can jointly manufacture battery cells through cooperation. When the lamination assembly 100 is in the second state, the first connection structure 111 is connected to the second connection structure 121 to fix the relative position of the lamination table 110 and the connection table 120. That is, the first connection structure 111 and the second connection structure 121 can be fixedly connected so that the lamination table 110 is fixed to the connection table 120. The detachable connection between the laminating table 110 and the connecting table 120 formed by the above-mentioned setting can avoid the transmission of vibration between the laminating table 110 and the connecting table 120 when the laminating assembly 100 is in the first state, and can also facilitate the adjustment of the relative position of the laminating table 110 and the connecting table 120 according to manufacturing requirements; when the laminating assembly 100 is in the second state, it is convenient to transport the laminating table 110 and the connecting table 120 together. Therefore, the laminating assembly 100 of the utility model can make the laminating table 110 and the connecting table 120 separately arranged or connected to each other, so as to avoid the transmission of vibration between the laminating table 110 and the connecting table 120 on the one hand, so as to improve the manufacturing quality, and on the other hand, it is convenient to transport the various parts of the laminating assembly 100 together.

[0050] Regarding the form of the first connection structure 111 and the second connection structure 121, in different embodiments, the connection form can be a fixed connection, a sliding connection, an abutting connection, etc., and different connection forms can be used in combination with each other. Figure 3-Figure 5 In some embodiments, the first connection structure 111 may include an abutment member, and the second connection structure 121 may include an abutment surface. When the laminate assembly 100 is in the second state, the abutment member may abut against the abutment surface. It can be understood that when the laminate assembly 100 is in the second state, the connection between the first connection structure 111 and the second connection structure 121 can be formed in the form of the abutment member abutting against the abutment surface. Among them, the abutment member can be a component of any shape structure, and can be suitable for abutting against the abutment surface. Exemplarily, the abutment member can be a rectangular rod, a round rod, a block, a sphere, etc. In different embodiments, the contact surface between the abutment member and the abutment surface can be a plane, a curved surface, or a special-shaped surface formed by bending.

[0051] See also Figure 1-Figure 2In some other embodiments, when the lamination assembly 100 is in the second state, the first connection structure 111 and the second connection structure 121 can form a screw connection. It can be understood that the first connection structure 111 may include a screw, and the corresponding second connection structure 121 may include an opening, or the first connection structure 111 may include an opening, and the corresponding second connection structure 121 may include a screw. Based on this, when the lamination assembly 100 is in the second state, the screw can be inserted into the opening to form a screw connection between the first connection structure 111 and the second connection structure 121 to fix the relative position of the first connection structure 111 and the second connection structure 121. It should be noted that the screw connection described above includes the form of bolt connection, that is, the second connection structure 121 can also include a nut, and then a bolt connection can be formed by the cooperation of the bolt, the opening, and the nut.

[0052] It should be noted that, in different embodiments, the first connection structure 111 or the second connection structure 121 may include parts for auxiliary connection, or may not include parts for auxiliary connection. For example, when the first connection structure 111 and the second connection structure 121 can form a screw connection, the first connection structure 111 or the second connection structure 121 may include screws / nuts, or may not include screws / nuts.

[0053] In some other embodiments, when the lamination assembly 100 is in the second state, the first connection structure 111 and the second connection structure 121 form a snap connection. It is understandable that the first connection structure 111 and the second connection structure 121 can be snap-fitted, and the relative position of the first connection structure 111 and the second connection structure 121 can also be fixed. In other embodiments, the first connection structure 111 and the second connection structure 121 can also form other forms of connection, which will not be repeated here.

[0054] It should be noted that the above-mentioned connection methods can be used in combination to achieve a better fixed connection effect. For details, see Figure 6-Figure 7 In some embodiments, the first connecting structure 111 is an abutment member, and the abutment member has an opening, and the second connecting structure 121 includes an abutment surface, a screw and a nut. When the stacking assembly 100 is in the second state, the abutment member abuts against the abutment surface, and the opening, the screw and the nut together form a bolt connection. For ease of description, the following is an example of an embodiment in which the first connecting structure 111 and the second connecting structure 121 form such a connection. Different embodiments can be combined with each other between different technical solutions.

[0055] For the specific arrangement of the lamination station 110 and the connection station 120. Figure 3 or Figure 7In some embodiments, the connection platform 120 may have a through hole 122 extending along the first direction X. In different embodiments, the cross-sectional shape of the through hole 122 may be rectangular, circular, elliptical, or any other shape. Based on different usage requirements, in different embodiments, the through hole 122 may or may not penetrate the connection platform 120. The stacking platform 110 may include a first end 112 and a second end 113 arranged relatively along the first direction X. Among them, the first end 112 may be used to place the diaphragm, the pole piece, and drive the diaphragm to reciprocate. It is understood that the first end 112 may be connected to the placement component and the driving component required for manufacturing the battery cell. The second end 113 is connected to the first connection structure 111. It should be noted that in the present utility model, the first end 112 and the second end 113 only represent two parts of the stacking platform 110 that are opposite to each other along the first direction X, so the first end 112 and the second end 113 may not only be located at the ends of the stacking platform 110 on both sides of the first direction X.

[0056] See also Figure 3-Figure 5 or Figure 7 In some embodiments, along the first direction X, the laminating stage 110 may be provided through the through hole 122, so that the first end 112 is located on one side of the through hole 122, and the second end 113 is located on the other side of the through hole 122. It can be understood that the laminating stage 110 as a whole may extend along the first direction X, so that the laminating stage 110 can pass through the through hole 122 along the first direction X. Through the arrangement of the through hole 122, when the laminating assembly 100 is in the first state, the laminating stage 110 is provided through the through hole 122, and the laminating stage 110 is arranged at intervals from the connecting stage 120. The arrangement that the first end 112 and the second end 113 are respectively located on both sides of the through hole 122 can reduce the influence of the second connecting structure 121 on the laminating stage 110 when connecting or disassembling.

[0057] Based on the arrangement of the through hole 122 in the above embodiment, in order to further improve the integrity of the lamination platform 110 and the connection platform 120. Figure 3 In some embodiments, the orthographic projection of the first connection structure 111 on a plane perpendicular to the first direction X is the first projection S1, and the orthographic projection of the edge of the hole 122 on a plane perpendicular to the first direction X is the second projection S2. It can be understood that the first projection S1 and the second projection S2 are both located on a plane perpendicular to the axis of the through hole 122, and the shapes of the first projection S1 and the second projection S2 depend on the shapes of the first connection structure 111 and the through hole 122, see Figure 3 For ease of description, the following uses the embodiment in which the first connecting structure 111 is a rectangular rod and the through hole 122 is a rectangular cross-section hole as an example for illustration. Different embodiments can be combined with different technical solutions. The second direction Y is defined as being perpendicular to the first direction X. Figure 3, along the second direction Y, the length of the first projection S1 can be greater than the length of the second projection S2. Based on the above settings, it can be understood that, since the extension direction of the through hole 122 is the first direction X, and the extension length of the first projection S1 of the first connection structure 111 along the first direction X in the second direction Y can be greater than the extension length of the second projection S2 of the opening edge of the through hole 122 along the first direction X in the same direction, the first connection structure 111 can abut against the opening edge of the through hole 122 along the first direction X, so that the first connection structure 111 can limit the displacement of the laminating stage 110 parallel to the first direction X. By limiting the first connection structure 111 to the opening edge of the through hole 122, when the laminating assembly 100 is in the second state, the laminating stage 110 and the connection stage 120 are not easy to separate, so that the connection stability and safety are better.

[0058] In order to facilitate the lamination platform 110 to be inserted into the through hole 122 to complete the installation of the lamination platform 110, see Figure 3 , the third direction Z is defined as crossing the first direction X and the second direction Y. For example, the third direction Z is perpendicular to both the first direction X and the second direction Y. In other embodiments, the third direction Z can be any direction crossing the first direction X and the second direction Y. Figure 3 In some embodiments, the length of the first projection S1 along the second direction Y is greater than the length of the first projection S1 along the third direction Z. It is understandable that, when observed along the first direction X, the first connecting structure 111 may include adjacent long sides (corresponding to the second direction Y) and short sides (corresponding to the third direction Z). When the stacking platform 110 needs to be inserted into the through hole 122, the first connecting structure 111 can be first extended into the through hole 122 from the short side, and then inserted into the first connecting structure 111 along the extension direction of the long side. When one end of the stacking platform 110 needs to be taken out of the through hole 122, similar steps are also performed. Therefore, the above-mentioned setting can facilitate the stacking platform 110 to pass through or out of the through hole 122 of the connecting platform 120.

[0059] See also Figure 3-Figure 7In some embodiments, the lamination table 110 may further include a bracket 130. The bracket 130 may be provided in the through hole 122 along the first direction X. In some embodiments, the bracket 130 may be used to support and fix the first connection structure 111 and the placement components and driving components required for manufacturing the battery cell, so the first end 112 and the second end 113 may be located on both sides of the bracket 130 along the first direction X, respectively. In order to facilitate the adjustment of the first connection structure 111 according to the assembly requirements and the state switching requirements, in some embodiments, the first connection structure 111 may be slidably connected to the bracket 130 to adjust the relative position of the first connection structure 111 and the second connection structure 121 along the first direction X. The adjustment of the first connecting structure 111 along the first direction X can be used to adjust the relative distance between the first connecting structure 111 and the second connecting structure 121. Specifically, in different applications, on the one hand, the relative distance between the first connecting structure 111 and the second connecting structure 121 can be adjusted so that the stacking table 110 and the connecting table 120 are arranged at intervals, and a certain spacing margin can be provided so that the stacking table 110 does not contact the connecting table 120 when vibrating; on the other hand, the position of the first connecting structure 111 can be adjusted to adapt to different production line layouts; on the other hand, the relative distance between the first connecting structure 111 and the second connecting structure 121 can be adjusted to achieve the switching between the first state and the second state of the stacking assembly 100, that is, when the two are connected, the relative distance is the shortest, and the stacking assembly 100 is in the second state at this time, and after the relative distance increases, the two are disconnected, and the stacking assembly 100 is in the first state at this time.

[0060] For the specific structure of the connection platform 120, see Figure 3-Figure 5 or Figure 7 In some embodiments, the connection platform 120 may include a first plate 123 and a second plate 124 arranged opposite to each other along the first direction X. The first plate 123 and the second plate 124 may jointly define a cavity 125. It is understood that the arrangement of the first plate 123 and the second plate 124 may enable the connection platform 120 to have a two-layer plate structure, and the cavity 125 may be defined between the two layers of plates. In combination with the arrangement of the through hole 122 in the above embodiment, see Figure 3-Figure 5 or Figure 7In some embodiments, the first plate 123 may have a through hole 122 extending along the first direction X. The lamination table 110 may be provided through the through hole 122 so that the first connection structure 111 is located in the cavity 125. At this time, it can be understood that the first connection structure 111 is located between the first plate 123 and the second plate 124 that are arranged opposite to each other. Based on this, in some embodiments, the first plate 123 may be configured to limit the displacement of the first connection structure 111 along the first direction X. Correspondingly, the second plate 124 may be configured to limit the displacement of the first connection structure 111 in the opposite direction of the first direction X. It can be understood that the above-mentioned arrangement allows the stacking table 110 to be passed through the through hole 122, the first plate body 123 can abut against the side of the first connecting structure 111 opposite to the first direction X, and the second plate body 124 can abut against the side of the first connecting structure 111 along the first direction X, so that the first connecting structure 111 is not easy to escape from the cavity 125, thereby further improving the integrity of the stacking assembly 100.

[0061] In some embodiments, in order to make the first connection structure 111 more firmly abut against the second connection structure 121, so as to improve the connection stability between the first connection structure 111 and the second connection structure 121 when the lamination assembly 100 is in the second state, the first connection structure 111 can be designed to correspond to the second connection structure 121. Specifically, based on the setting of the through hole 122 in the above embodiment, in some embodiments, the connection platform 120 can include a first plate body 123, and the first plate body 123 can have a through hole 122 extending along the first direction X. Based on this, the first connection structure 111 can be penetrated by the through hole 122. Along the first direction X, the cross section of the first connection structure 111 can be rectangular. It should be noted that the rectangular cross section of the first connection structure 111 along the first direction X can mean that the cross section has a hollow rectangular outline, or a solid rectangular outline. Corresponding to the above-mentioned embodiment in which the first connection structure 111 and the second connection structure 121 abut against each other when the lamination assembly 100 is in the second state, the cross section of the first connection structure 111 is rectangular, which can make the first connection structure 111 have a higher structural strength and be easy to manufacture. Based on this requirement, in other embodiments, the cross section of the first connection structure 111 along the first direction X can be a triangle or other cross-sectional shape with better structural strength. When the lamination assembly 100 is in the second state, the side of the rectangle abuts against the side of the connecting platform 120 close to the first connection structure 111 along the first direction X. It can be understood that the rectangular cross section of the first connection structure 111 can also facilitate the rectangular side of the first connection structure 111 close to the second connection structure 121 to abut against the second connection structure 121 to form a more stable connection.

[0062] When the lamination assembly 100 is in the first state, it is suitable for being placed on the connection surface 200. In order to enhance the working stability of the lamination table 110 when the lamination assembly 100 is in the first state, see Figure 6 , in some embodiments, the lamination table 110 may further include a fixing portion 140. The lamination assembly 100 may be configured such that when it is in the first state, the fixing portion 140 is suitable for connecting to the connecting surface 200 to install the lamination table 110 and fix the relative position of the lamination table 110 and the connecting surface 200. It can be understood that the connecting surface 200 is the mounting surface to which the lamination table 110 is connected when the lamination assembly 100 is in the first state, that is, when the lamination table 110 is working. Therefore, in different embodiments, the connecting surface 200 may be the ground, a base, a pad, etc. Combined with the description of the first state in the above embodiment, it can be understood that when the lamination assembly 100 is in the first state, the lamination table 110 and the connecting table 120 are separately arranged, and the driving diaphragm reciprocates so that the lamination table 110 generates a large vibration, which affects the stacking manufacturing of the battery cell. In order to reduce the vibration, the fixing portion 140 may be fixedly connected to the connecting surface 200 to transmit part of the vibration to the connecting surface 200. For details, see Figure 6 In some embodiments, the fixing portion 140 may include a bolt hole or a threaded hole, so that the fixing portion 140 is suitable for connecting an anchor bolt or an expansion screw.

[0063] Furthermore, the setting of the fixing part 140 can be combined with the connection platform 120 with a two-layer plate structure described in the above embodiment, that is, when the stacking assembly 100 is in the first state, the first connection structure 111 is located between the first plate 123 and the second plate 124 that are arranged opposite to each other. Based on this, in order to facilitate the connection of the fixing part 140 to the connection surface 200, in some embodiments, the second plate 124 can have a through hole, and the opening direction of the through hole 122 and the through hole can both be along the first direction X, so that the stacking platform 110 can be conveniently penetrated into the connection platform 120 through the through hole 122 along the first direction X, so that the first connection structure 111 is located in the cavity 125, and the end of the stacking platform 110 close to the first connection structure 111 is penetrated out of the connection platform 120 through the through hole, and then the fixing part 140 connected to the end can be connected to the connection surface 200.

[0064] Combined with the description of the first state in the above embodiment, it can be understood that when the lamination assembly 100 is in the first state, the separate arrangement of the lamination table 110 and the connection table 120 can avoid the transmission of vibration between the lamination table 110 and the connection table 120. Therefore, after isolating the main vibration source, the various components required for manufacturing the battery cell can be arranged on the connection table 120 to improve the integrity of the lamination assembly 100. Exemplarily, in the first embodiment, the connection table 120 may also include a clamping device. The clamping device is used to transfer the pole piece and place the pole piece on the lamination table 110. Therefore, the clamping device may include a manipulator and a driving device of the manipulator. In the second embodiment, the connection table 120 may also include a feeding device. The feeding device is used to provide the pole piece to the lamination table 110. Therefore, the feeding device may include a material preparation conveyor for transporting and providing the pole piece to be stacked. In the third embodiment, the connection table 120 may also include a discharging device. The discharging device is used to transfer the battery cell. Therefore, the discharge device may include a discharge conveyor for transporting the stacked battery cells. In the fourth embodiment, the connection station 120 also includes a reeling device. The reeling device can be used to provide a diaphragm. Therefore, the discharge device may include a diaphragm conveyor for delivering the diaphragm. In the fifth embodiment, the connection station 120 may also include a detection device. The detection device is used to detect the position of the electrode or the battery cell. Therefore, the detection device may include a detection device for sensors, cameras, etc. for photographing and correcting. The connection of the above components is only an exemplary description. In other embodiments, other components required for manufacturing the battery cells can also be connected to the connection station 120, which will not be repeated here. Referring to the description of the aforementioned embodiment, the connection station 120 defined above also includes various devices such as a clamping device, which means that the connection station 120 can also include various component parts required for connecting the stacking operation, so that the connection station 120 has the functions of placing the electrode, transferring the electrode, etc.

[0065] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the application concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A laminate assembly for manufacturing a battery cell, characterized in that: include: A lamination platform, comprising a first connection structure, wherein the lamination platform is suitable for placing a diaphragm and a pole piece and driving the diaphragm to reciprocate; A connecting platform including a second connecting structure; Among them, the stacking assembly has a first state and a second state. When the stacking assembly is in the first state, the stacking table and the connecting table are arranged at intervals, and the stacking table and the connecting table can jointly manufacture the battery cell. When the stacking assembly is in the second state, the first connecting structure is connected to the second connecting structure to fix the relative position of the stacking table and the connecting table.

2. The lamination assembly according to claim 1, characterized in that: The first connection structure includes an abutment member, the second connection structure includes an abutment surface, and when the lamination assembly is in the second state, the abutment member abuts against the abutment surface; and / or, When the lamination assembly is in the second state, the first connection structure and the second connection structure form a screw connection; and / or, When the lamination assembly is in the second state, the first connection structure and the second connection structure form a snap connection.

3. The lamination assembly according to claim 1, characterized in that: The connecting platform has a through hole extending along a first direction, and the stacking platform includes a first end and a second end arranged opposite to each other along the first direction, the first end is used to place the diaphragm, the pole piece and drive the diaphragm to reciprocate, and the second end is connected to the first connecting structure. Along the first direction, the stacking platform is penetrated by the through hole so that the first end is located on one side of the through hole and the second end is located on the other side of the through hole.

4. The lamination assembly according to claim 3, characterized in that: The orthographic projection of the first connecting structure on a plane perpendicular to the first direction is a first projection, the orthographic projection of the edge of the perforated hole on a plane perpendicular to the first direction is a second projection, and when the stacking assembly is configured to be in the first state, the second direction is perpendicular to the first direction, and along the second direction, the length of the first projection is greater than the length of the second projection.

5. The lamination assembly according to claim 4, characterized in that: The third direction is perpendicular to the first direction and the second direction, and the length of the first projection along the second direction is greater than the length of the first projection along the third direction.

6. The lamination assembly according to claim 3, characterized in that: The stacking platform further includes a bracket, which is penetrated through the through hole along the first direction, and the first connecting structure is slidably connected to the bracket to adjust the relative position of the first connecting structure and the second connecting structure along the first direction.

7. The lamination assembly according to claim 1, characterized in that: The connecting platform includes a first plate and a second plate arranged opposite to each other along a first direction, the first plate and the second plate jointly define a cavity, the first plate has a through hole extending along the first direction, the stacking platform is penetrated by the through hole so that the first connecting structure is located in the cavity, the first plate is configured to limit the displacement of the first connecting structure along the first direction, and the second plate is configured to limit the displacement of the first connecting structure in the opposite direction of the first direction.

8. The lamination assembly according to claim 1, characterized in that: The connecting platform includes a first plate body, the first plate body has a through hole extending along a first direction, the stacking platform is penetrated by the through hole, along the first direction, the cross-section of the first connecting structure is rectangular, and along the first direction, the side of the rectangle is configured to abut against a side of the first plate body close to the first connecting structure.

9. The lamination assembly according to claim 1, characterized in that: When the lamination assembly is in the first state, it is suitable for being placed on the connection surface. The lamination platform also includes a fixing portion. When the lamination assembly is configured to be in the first state, the fixing portion is suitable for connecting to the connection surface to fix the relative position of the lamination platform and the connection surface.

10. The lamination assembly according to claim 1, characterized in that The connection platform also includes a clamping device, which is used to transfer the pole piece and place the pole piece on the lamination platform; and / or, The connection station also includes a feeding device, which is used to provide the pole piece to the lamination station; and / or, The connection station also includes a discharge device, and the discharge device is used to transfer the battery cell; and / or, The connection station further comprises an unwinding device, the unwinding device being used to provide the diaphragm; and / or, The connection platform further comprises a detection device, and the detection device is used to detect the position of the pole piece or the battery core.

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