CN117239256A - Battery cell lamination device and lamination machine - Google Patents

Abstract

The invention relates to the technical field of battery lamination, and discloses a battery core lamination device and a lamination machine, wherein the battery core lamination device comprises a lamination table, and a plurality of lamination stations are arranged at intervals along the length direction of the lamination table; the film pulling assemblies are positioned above the stacking table and are arranged in one-to-one correspondence with the stacking stations, and are suitable for unreeling the diaphragms at the stacking stations and pulling the diaphragms to cover pole pieces at the corresponding stacking stations; the pole piece feeding mechanism comprises a first feeding frame and a second feeding frame which are arranged on two opposite sides of the stacking table, wherein a plurality of feeding structures corresponding to lamination stations one by one are arranged on the first feeding frame and the second feeding frame, and the pole piece feeding mechanism is suitable for conveying pole pieces to the corresponding lamination stations. The invention solves the problems of low equipment efficiency and increased lost cell number when lamination is abnormal.

Description

Battery cell lamination device and lamination machine

Technical Field

The invention relates to the technical field of battery lamination, in particular to a battery core lamination device and a lamination machine.

Background

With the development of new energy, the demand of various types of batteries as main energy carriers of new energy is increasing. In the cell production process of the battery, the lamination process is one of the main cell processes because the lamination process has the advantages of high energy density, more stable internal structure, higher safety, longer service life and the like of the produced cell. However, in the process of producing the battery cells by adopting the lamination process, the processing efficiency of the single battery cell is difficult to further improve due to the limitation of the alternate lamination action of the lamination and the diaphragm, so that in order to improve the overall efficiency of production equipment, a scheme of adding lamination stations on a lamination device to simultaneously process a plurality of battery cells is generally adopted.

In the related art, the equipment with multiple lamination stations is generally provided with a plurality of lamination stations on a lamination table, pole pieces are respectively fed to the lamination stations through a plurality of feeding structures, and diaphragms are sequentially unreeled to the lamination stations through a diaphragm unreeling mechanism, so that a plurality of electric cores are obtained in the process of one-time electric core lamination processing.

However, in the lamination device in the related art, on one hand, the movement travel of the lamination pole piece carrying process is long in the lamination processing process, so that the equipment efficiency is low; on the other hand, when an abnormality occurs in a certain cell lamination, other cells processed simultaneously are likely to be defective at the same time under the pulling action of the diaphragm, resulting in an increase in the number of lost cells.

Disclosure of Invention

In view of the above, the invention provides a cell lamination device and a lamination machine, so as to solve the problems of low equipment efficiency and increased lost cell number when lamination is abnormal.

In a first aspect, the present invention provides a cell lamination apparatus comprising: the stacking table is provided with a plurality of lamination stations which are arranged at intervals along the length direction; the film pulling assemblies are positioned above the stacking table and are arranged in one-to-one correspondence with the stacking stations, and are suitable for unreeling the diaphragms at the stacking stations and pulling the diaphragms to cover pole pieces at the corresponding stacking stations; the pole piece feeding mechanism comprises a first feeding frame and a second feeding frame which are arranged on two opposite sides of the stacking table, wherein a plurality of feeding structures which are in one-to-one correspondence with the lamination stations are arranged on the first feeding frame and the second feeding frame, and the feeding structures are suitable for conveying pole pieces to the corresponding lamination stations.

The beneficial effects are that: through setting up a plurality of membrane assemblies that draw, make to draw membrane assemblies and lamination station one-to-one and set up and the cooperation work, in the action of drawing the membrane of electric core lamination, draw membrane assemblies to a lamination station unreel the diaphragm that corresponds, make reciprocating motion's action stroke shorten, effectively save single action cycle's time spent to promoted electric core production efficiency, in addition, the lamination action of each lamination station is relatively independent, avoids causing the influence to the lamination action of other electric cores when certain electric core lamination action appears unusual.

In an alternative embodiment, the film pulling assembly comprises a film pulling limiting part and a first driving mechanism, wherein a diaphragm limiting space is formed in the film pulling limiting part, and the first driving mechanism is suitable for driving the film pulling limiting part to move between two opposite sides of the corresponding lamination station in the length direction of the lamination station.

The beneficial effects are that: the film pulling limiting piece is driven by the first driving mechanism, in the processing process of the battery cell lamination, the whole action of the lamination table is replaced by the action of the film pulling limiting piece, the whole weight of a moving part on the device is reduced, so that the energy consumption is reduced, the impact of inertia on equipment is reduced, the action speed of the moving part is conveniently increased, and the efficiency is improved.

In an optional embodiment, the film pulling component further comprises a film pulling yielding part, the film pulling yielding part is arranged above the film pulling limiting part and moves along with the film pulling limiting part, a diaphragm limiting space is formed in the film pulling yielding part, and the mounting height of the film pulling yielding part is higher than that of the feeding structure.

The beneficial effects are that: through setting up draw the membrane to give way the piece and draw the membrane locating part and carry out spacingly to the diaphragm in the top and the below of loading structure mounted position respectively, make the diaphragm by spacing to the side direction of lamination station under drawing the state that the membrane action stopped, avoid transporting the loading structure and producing the interference with the action of placing the pole piece, make the loading structure can follow the motion and the material loading of perpendicular to folding platform length direction, promoted space utilization and promoted work efficiency.

In an alternative embodiment, the film-pulling yielding member and the film-pulling limiting member each include a pair of limiting rollers, and the diaphragm limiting space is formed between the pair of limiting rollers.

The beneficial effects are that: the limiting roller is used for limiting the diaphragm in the process of unreeling and pulling the diaphragm, friction between the diaphragm and the diaphragm abdicating part or between the diaphragm limiting part is reduced, damage to the diaphragm is avoided, and resistance of unreeling and pulling the diaphragm is reduced.

In an alternative embodiment, the height direction of the film pulling assembly is perpendicular to the upper surface of the stacking table.

The beneficial effects are that: the position of the diaphragm is further limited, and the possibility of interference of the diaphragm to the movement of the feeding structure is reduced.

In an alternative embodiment, the film pulling assemblies are arranged on one side of the lamination station in the length direction of the lamination station and serve the lamination station.

The beneficial effects are that: in the related art, as the diaphragms are sequentially paved on the plurality of lamination stations through the same coil of diaphragms, after the processing of the battery core is completed, the diaphragms among the lamination stations are required to be cut off, so that the positions of the positive and negative pole pieces are easily influenced, and the processing precision is further influenced; in addition, when one of the electric cores is abnormal in lamination, other electric cores processed simultaneously are easy to be abnormal due to the traction effect of the diaphragm, so that a plurality of electric cores are simultaneously wasted. In the embodiment, the diaphragms used by the lamination stations are mutually independent, so that the diaphragms do not need to be cut off, the machining precision is ensured, and the machining time is saved.

In an alternative embodiment, adjacent said pull film assemblies are adapted to move in directions toward or away from each other; or adjacent film pulling assemblies are suitable for synchronous movement in the same direction.

The beneficial effects are that: the film pulling assemblies are mutually close to, far away from or synchronously move in the same direction, serve corresponding lamination stations respectively, do not interfere with each other and cooperate with each other, can sequentially lay diaphragms for each lamination station, and can lay the diaphragms for each lamination station in the same working time, so that the working efficiency is improved.

In an alternative embodiment, the pole piece feeding mechanism further comprises a second driving mechanism, and the second driving mechanism is suitable for driving the first feeding rack or the second feeding rack to move towards the stacking direction, so that the feeding structure conveys the pole piece to the stacking station.

The beneficial effects are that: the first feeding frame or the second feeding frame is driven to move through the second driving mechanism, so that the feeding structure moves to the lamination station from the lamination side, the action consistency of each feeding structure is improved, the movement matching difficulty of each movement structure of the device is reduced, and the working efficiency of the device is improved.

In an optional implementation manner, the pole piece feeding device further comprises a plurality of pole piece feeding tables, the pole piece feeding tables are distributed on two opposite sides of the stacking table and correspond to the feeding structures one by one, and each pole piece feeding table is arranged below the corresponding feeding structure.

The beneficial effects are that: the pole piece feeding tables are arranged on two sides of the stacking table, so that the pole piece feeding distance is shortened, the time for feeding the pole piece is reduced, and the working efficiency of the device is improved.

In an alternative embodiment, the loading structure is a manipulator.

The beneficial effects are that: by selecting the manipulator as the feeding structure, the mechanical structure is simplified, and the manipulator of the pole piece belongs to the mature technology in the related technology, so that the application range of the device is improved, and the cost is reduced.

In a second aspect, the present invention also provides a lamination machine, including: the battery cell lamination device.

The beneficial effects are that: by adopting the battery cell lamination device, on one hand, the speed of processing the battery cells at each lamination station is improved by arranging the plurality of film pulling assemblies, so that the speed of processing the battery cells by a lamination machine can be stably increased along with the increase of the number of lamination stations, and the capacity of the battery cells is effectively improved; on the other hand, the direction of feeding of pole piece is different with the direction that lamination station set up, is difficult to take place the motion and interferes, and pole piece handling distance is short and the space utilization of device is high, and in addition, the diaphragm that each lamination station used is mutually independent, need not to carry out the diaphragm and cuts off, has practiced thrift the time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a top view of a cell lamination apparatus according to an embodiment of the invention;

fig. 2 is a front view of a cell lamination apparatus according to an embodiment of the invention;

fig. 3 is a schematic view of the cell stack assembly of fig. 2 in another motion.

Reference numerals illustrate:

100. stacking; 101. a lamination station; 200. a film pulling assembly; 201. a film pulling limiting piece; 202. a film pulling abdication piece; 300. a pole piece feeding mechanism; 301. a first feeding frame; 302. a second feeding frame; 303. a feeding structure; 400. pole piece feeding table.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the industry field of battery production, the production process of battery cells is mainly divided into a winding process and a lamination process, wherein the battery cells produced by the lamination process have the advantages of higher energy density, more stable structure, better safety, longer service life and the like under the same volume, and are likely to become the main trend of the future battery industry development.

Different from the traditional winding process, the lamination process refers to cutting the positive plate and the negative plate into corresponding sizes and shapes, and alternately and circularly stacking the positive plate and the negative plate according to the sequence of the positive plate, the diaphragm, the negative plate, the diaphragm and the positive plate to finally form the battery cell. In the related art, a separator is generally rolled and discharged in an unreeled form by a lamination device, and reciprocally and alternately covers the surfaces of each layer of positive or negative electrode sheets to form a 'Z' -shaped lamination structure.

However, the lamination process is limited by the structure and the equipment action, the speed of producing a single battery core is slower than that of the winding process, in order to ensure the precision of lamination, the processing speed of the single battery core is difficult to be greatly improved, the battery productivity of the lamination process is seriously influenced, in order to improve the productivity of the lamination process, a plurality of lamination stations are usually arranged on a lamination table, pole pieces are simultaneously conveyed to the lamination stations through a composite feeding structure, and the diaphragm unreeling mechanism cooperates with the movement of the lamination table to carry out diaphragm unreeling action on the lamination stations, so that the simultaneous processing of the battery cores is reciprocally realized. However, the above-mentioned related art device requires that the length of the movement of the lamination stage is at least greater than the total length of the lamination stations in order to unwind the separator to each lamination station; in addition, the positive electrode feeding structure and the negative electrode feeding structure are required to be arranged at two ends of the stacking table in the length direction of the movement track, so that the space utilization rate is low; moreover, when one of the electric cores is abnormal in lamination, other electric cores processed simultaneously are easy to be abnormal due to the traction action of the diaphragm, so that a plurality of electric cores are simultaneously wasted.

Embodiments of the present invention are described below with reference to fig. 1 to 3.

According to an embodiment of the present invention, in one aspect, as shown in fig. 1 to 3, there is provided a cell lamination apparatus, a lamination stage 100, provided with a plurality of lamination stations 101 arranged at intervals along its length; the film pulling assemblies 200 are positioned above the stacking table 100 and are arranged in one-to-one correspondence with the stacking stations 101, and the film pulling assemblies 200 are suitable for unreeling the diaphragms at the stacking stations 101 and pulling the diaphragms to cover pole pieces at the corresponding stacking stations 101; the pole piece feeding mechanism 300 comprises a first feeding frame 301 and a second feeding frame 302 which are arranged on two opposite sides of the stacking table 100, wherein a plurality of feeding structures 303 which are in one-to-one correspondence with the lamination stations 101 are arranged on the first feeding frame 301 and the second feeding frame 302, and the pole piece feeding mechanism is suitable for conveying pole pieces to the corresponding lamination stations 101.

Specifically, each film pulling module 200 is disposed above the stacking table 100, and the film pulling module 200 may be mounted above the stacking table 100 indirectly by being mounted on a frame of the lamination machine, or may be mounted directly above the stacking table 100 by providing an auxiliary structure such as a structural frame, and the film pulling module 200 is located at one side of the corresponding lamination station 101. In addition, be provided with diaphragm feed mechanism (not shown in the drawing) on the lamination machine, diaphragm material is rolled up and is installed in diaphragm feed mechanism, and diaphragm feed mechanism is suitable for supplying diaphragm material area to drawing membrane mechanism, and diaphragm feed mechanism is the mature technique in this field, and the description is not repeated here. In this embodiment, the specific form of the diaphragm feeding mechanism and the specific matching manner of the diaphragm feeding mechanism and the diaphragm pulling assembly 200 are not limited, and the material belts unreeled by the diaphragm pulling assemblies 200 may come from the same diaphragm feeding mechanism or may come from different diaphragm feeding mechanisms respectively.

It should be noted that, during the film drawing operation of the apparatus, the relative displacement between the lamination station 101 and the film drawing assembly 200 may be generated by the movement of the film drawing assembly 200, in some embodiments not shown, may also be generated by the movement of the lamination table 100, or may be generated by the movement of the lamination table 100 and the film drawing assembly 200 in opposite directions, so that the driving structure for driving the film drawing operation is configured to drive the lamination table 100, or is configured to drive the film drawing assembly 200 to move, or is configured to drive both the lamination table 100 and the film drawing assembly 200 to move, which is within the protection scope of the present embodiment.

In addition, the present embodiment does not limit the direction of the relative displacement between the film pulling assembly 200 and the stacking table 100, and does not limit the specific form of the driving structure for driving the film pulling assembly 200 or the stacking table 100 to move, under the condition that the film pulling action is satisfied and the film can cover the pole piece at the lamination station 101, the direction of the relative displacement between the stacking table 100 and the film pulling assembly 200 may be the same as the length direction of the stacking table 100, in some embodiments not shown, may be perpendicular to the length direction of the stacking table 100, the specific form of the driving structure may be that a slider is adopted to guide and use a linear motor as a power source, or may be other forms, and the specific forms of the displacement direction and the driving structure of the stacking table 100 and the film pulling assembly 200 are all within the protection scope of the present embodiment.

It should be further noted that, the first feeding frame 301 and the second feeding frame 302 are respectively installed on a frame of the lamination machine, and the feeding structure 303 is respectively installed on a side of the first feeding frame 301 and a side of the second feeding frame 302, which are close to the lamination table 100. The feeding structure 303 may be a manipulator or an automatic clamp. The feeding structure 303 carries the pole piece to the action of the lamination station 101, a driving mechanism is installed on a frame of the lamination machine to drive the first feeding frame 301 or the second feeding frame 302 to integrally move, so as to drive the plurality of feeding structures 303 to synchronously complete the feeding action, the driving mechanism is installed on the first feeding frame 301 and the second feeding frame 302 to drive the feeding structure 303 to move so as to complete the feeding action, and the first feeding frame 301 or the second feeding frame 302 and the feeding structure 303 are simultaneously driven by the driving mechanisms respectively adapted, so that the feeding action is completed in a matched manner, and the specific structure, the setting mode and the specific form of the feeding structure 303 are all in the protection scope of the embodiment.

In this embodiment, through setting up a plurality of membrane assemblies 200 that draw, make to draw membrane assembly 200 and lamination station 101 one-to-one and set up and the cooperation work, in drawing the membrane action, draw membrane assembly 200 to only unreel the diaphragm to a lamination station 101 that corresponds, make reciprocating motion's action stroke shorten, effectively save single action cycle's time spent to promoted electric core production efficiency, in addition, the electric core course of working of each lamination station 101 is relatively independent, avoids causing the influence to the lamination action of other electric cores when certain electric core lamination action appears unusual.

In one embodiment, the film pulling assembly 200 includes a film pulling limiting member 201 and a first driving mechanism (not shown in the drawing), wherein a film pulling limiting space is provided on the film pulling limiting member 201, and the first driving mechanism is adapted to drive the film pulling limiting member 201 to move between two opposite sides of the corresponding lamination station 101 in the length direction of the lamination station 100.

Specifically, the first driving mechanism may be mounted on a frame of the lamination machine, or the first driving mechanism may be mounted on the stacking table 100 through an auxiliary structure such as a structural frame. The stacking table 100 is kept still, and the film pulling assembly 200 is driven by the first driving mechanism to realize relative displacement with the stacking table 100, so that film pulling action is completed. The embodiment is not limited to a specific form of the first driving mechanism, and the first driving mechanism may be a linear motor and a connecting piece disposed on an action end of the linear motor and adapted to connect with the film pulling assembly, or may be other forms.

It should be further noted that, the film pulling limiting member 201 may include a pair of limiting rollers, a corresponding diaphragm limiting space is formed between the pair of limiting rollers, in some embodiments not shown, the film pulling limiting member 201 may also be a limiting rod provided with a limiting groove, the limiting groove may be a diaphragm limiting space, and may also be a pair of limiting rods, a corresponding diaphragm limiting space is formed between the limiting rods, and the specific forms of the film pulling limiting member 201 are all within the protection scope of the present embodiment.

In this embodiment, the first driving mechanism drives the film pulling limiting part 201, and in the processing process of the battery cell lamination, the motion of the film pulling limiting part 201 replaces the overall motion of the stacking table 100, so that the overall weight of the moving part on the device is reduced, the energy consumption is reduced, the impact of inertia on equipment is reduced, the motion speed of the moving part is conveniently improved, and the efficiency is improved.

In one embodiment, the film pulling assembly 200 further includes a film pulling abdicating member 202, the film pulling abdicating member 202 is disposed above the film pulling limiting member 201 and moves along with the film pulling limiting member 201, a diaphragm limiting space is disposed on the film pulling abdicating member 202, and the mounting height of the film pulling abdicating member 202 is higher than the mounting height of the feeding structure 303.

Specifically, the film-drawing abdicating member 202 is located directly above the film-drawing limiting member 201, and the diaphragm extends in the vertical direction between the film-drawing abdicating member 202 and the diaphragm limiting space of the film-drawing limiting member 201.

It should be noted that, the film-pulling yielding member 202 may include a pair of limiting rollers, a corresponding diaphragm limiting space is formed between the pair of limiting rollers, in some embodiments not shown, the film-pulling yielding member 202 may also be a limiting rod provided with a limiting groove, the limiting groove forms a diaphragm limiting space, a pair of limiting rods, and a corresponding diaphragm limiting space is formed between the limiting rods, where the specific form of the film-pulling yielding member 202 is within the protection scope of the present embodiment.

In this embodiment, through setting up and drawing membrane to give way piece 202 and drawing membrane locating part 201 and carry out spacingly to the diaphragm in the top and the below of loading structure 303 mounted position respectively, make the diaphragm by spacing to lamination station 101's side direction under drawing the state that the membrane action stopped, avoid transporting loading structure 303 and producing the interference with the action of placing the pole piece, make loading structure 303 can follow the motion and the material loading of perpendicular to folding platform 100 length direction, promoted space utilization and promoted work efficiency.

In one embodiment, the film pulling yield element 202 and the film pulling limiting element 201 each include a pair of limiting rollers, and a diaphragm limiting space is formed between the pair of limiting rollers.

In the embodiment, the limiting roller limits the diaphragm in the process of unreeling and pulling the diaphragm, so that friction between the diaphragm and the diaphragm abdicating piece or between the diaphragm limiting piece is reduced, damage to the diaphragm is avoided, and resistance of unreeling and pulling the diaphragm is reduced.

In one embodiment, the height direction of the pull film assembly 200 is perpendicular to the upper surface of the stack 100.

In this embodiment, the position of the diaphragm is further limited, and the possibility of interference of the diaphragm to the movement of the feeding structure 303 is reduced.

In one embodiment, the film pulling assemblies 200 are each disposed on one side of the corresponding lamination station 101 along the length of the lamination station 100 and serve the corresponding lamination station 101.

In this embodiment, the film pulling assembly 200 only needs to span the width of a single pole piece when performing the film pulling action, so that the film pulling assembly 200 reciprocates in a shorter stroke, and meanwhile, the single film pulling assembly 200 only supplies the separator to a corresponding lamination station 101, so that the frequency of changing and feeding the separator coil is greatly reduced, the frequency of stopping and feeding the equipment is reduced, and the production efficiency is improved.

In the related art, as the diaphragms are sequentially paved on the plurality of lamination stations through the same coil of diaphragms, after the processing of the battery cells is completed, the diaphragms among the lamination stations are required to be cut off, so that the positions of the positive and negative pole pieces are easily influenced, and the processing precision is further influenced; in addition, when one of the electric cores is abnormal in lamination, other electric cores processed simultaneously are easy to be abnormal due to the traction effect of the diaphragm, so that a plurality of electric cores are simultaneously wasted. In this embodiment, the diaphragms used in each lamination station 101 are independent of each other, so that the diaphragms do not need to be cut off, the machining precision is ensured, and the machining time is saved.

In one embodiment, adjacent pull film assemblies 200 are adapted to move in directions toward or away from each other; or adjacent pull film assemblies 200 are adapted to move synchronously in the same direction.

Specifically, in a state where the film drawing operation is stopped, each film drawing assembly 200 is located at one side of the corresponding lamination station 101, and adjacent film drawing assemblies 200 are located at different sides of the corresponding lamination station 101; alternatively, adjacent film pulling modules 200 are each located on the same side of the corresponding lamination station 101. When the film pulling action is performed, the film pulling assemblies 200 are respectively moved to the other side of the corresponding lamination station 101, so that the moving directions of the adjacent film pulling assemblies 200 are opposite or the same.

In this embodiment, the film pulling assemblies 200 move synchronously in mutually close, far away or same direction, and serve corresponding lamination stations 101 respectively, so that the films can be sequentially laid for each lamination station 101 without interference and in cooperation with each other, and the films can be laid for each lamination station 101 in the same working time, so that the working efficiency is improved.

Preferably, adjacent film pulling assemblies 200 are located on different sides of the corresponding lamination station 101, so that the adjacent film pulling assemblies 200 synchronously move towards or away from each other, and as the moving directions of the adjacent film pulling assemblies 200 are opposite, the impact force generated by the adjacent film pulling assemblies 200 on the device is opposite and counteracted, so that the load of the device supporting structure is greatly reduced.

In one embodiment, the pole piece loading mechanism 300 further comprises a second driving mechanism adapted to drive the first loading frame 301 or the second loading frame 302 to move towards the stacking station 100, so that the loading structure 303 conveys the pole piece to the stacking station 101.

In this embodiment, the second driving mechanism drives the first feeding frame 301 or the second feeding frame 302 to move, so that the feeding structures 303 move from the stacking table 100 side to the stacking station 101, the motion consistency of each feeding structure 303 is improved, the motion matching difficulty of each motion structure of the device is reduced, and the working efficiency of the device is improved.

In one embodiment, the pole piece feeding device further comprises a plurality of pole piece feeding platforms 400, the pole piece feeding platforms 400 are distributed on two opposite sides of the stacking platform 100 and correspond to the feeding structures 303 one by one, and each pole piece feeding platform 400 is arranged below the corresponding feeding structure 303.

It should be noted that, the pole piece feeding table 400 may be a storage table for storing the pole pieces after cutting, or may be a deviation correcting table for adjusting the positions of the pole pieces and improving the lamination precision.

In this embodiment, the pole piece feeding platforms 400 are arranged at two sides of the stacking platform 100, so that the pole piece feeding distance is shortened, the time for feeding the pole piece is reduced, and the working efficiency of the device is improved.

In one embodiment, the loading structure 303 is a robot.

In this embodiment, the mechanical structure is simplified by selecting the manipulator as the feeding structure 303, and the manipulator of the pole piece belongs to the mature technology in the related technology, so that the application range of the device is improved, and the cost is reduced.

According to an embodiment of the present invention, in another aspect, there is also provided a lamination machine including the above-mentioned cell lamination device.

In this embodiment, by adopting the above-mentioned cell lamination device, on one hand, by setting a plurality of film pulling assemblies 200, the speed of processing the cell at each lamination station 101 is improved, so that the speed of processing the cell by the lamination machine can steadily increase along with the increase of the number of lamination stations 101, and the capacity of the cell is effectively improved; on the other hand, the feeding direction of the pole pieces is different from the direction set by the lamination station 101, so that the movement interference is not easy to occur, the space utilization rate of the device is high, in addition, the diaphragms used by the lamination stations are mutually independent, the diaphragms are not required to be cut off, and the time is saved.

Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.

Claims (11)

1. A cell lamination apparatus, comprising:

a stacking table (100) provided with a plurality of lamination stations (101) arranged at intervals along the length direction thereof;

the film pulling assemblies (200) are positioned above the stacking table (100) and are arranged in one-to-one correspondence with the lamination stations (101), and the film pulling assemblies (200) are suitable for unreeling the diaphragms at the lamination stations (101) and pulling the diaphragms to cover pole pieces at the corresponding lamination stations (101);

pole piece feed mechanism (300), including setting up first material loading frame (301) and second material loading frame (302) of folding platform (100) opposite both sides, first material loading frame (301) with all be equipped with on second material loading frame (302) a plurality of with lamination station (101) one-to-one's feeding structure (303), feeding structure (303) are suitable for carrying the pole piece to corresponding lamination station (101).

2. The cell lamination device according to claim 1, wherein the film pulling assembly (200) comprises a film pulling limiting member (201) and a first driving mechanism, a diaphragm limiting space is arranged on the film pulling limiting member (201), and the first driving mechanism is suitable for driving the film pulling limiting member (201) to move between two opposite sides of the corresponding lamination station (101) in the length direction of the lamination station (100).

3. The cell lamination device according to claim 2, wherein the film pulling assembly (200) further comprises a film pulling abdicating member (202), the film pulling abdicating member (202) is arranged above the film pulling limiting member (201) and moves along with the film pulling limiting member (201), a diaphragm limiting space is formed in the film pulling abdicating member (202), and the installation height of the film pulling abdicating member (202) is higher than that of the feeding structure (303).

4. A cell lamination apparatus according to claim 3, characterized in that the film-pulling yielding member (202) and the film-pulling limiting member (201) each comprise a pair of limiting rollers, and the diaphragm limiting space is formed between a pair of the limiting rollers.

5. The cell stack assembly of claim 1, wherein the height direction of the film pulling assembly (200) is perpendicular to the upper surface of the stack (100).

6. The cell lamination apparatus according to claim 1, characterized in that, in the length direction of the lamination station (100), the film pulling assemblies (200) are each provided on one side of the lamination station (101) and serve the corresponding lamination station (101).

7. The cell stack assembly of claim 6, wherein adjacent ones of said film pulling modules (200) are adapted to move in directions toward or away from each other;

or, adjacent film pulling modules (200) are suitable for synchronous movement in the same direction.

8. The cell lamination apparatus of claim 1, wherein the pole piece loading mechanism (300) further comprises a second driving mechanism adapted to drive the first loading frame (301) or the second loading frame (302) to move in the direction of the lamination stage (100) so that the loading structure (303) conveys a pole piece to the lamination station (101).

9. The cell lamination device according to claim 1, further comprising a plurality of pole piece feeding tables (400), wherein the plurality of pole piece feeding tables (400) are distributed on opposite sides of the stacking table (100) and correspond to the feeding structures (303) one by one, and each pole piece feeding table (400) is respectively arranged below the corresponding feeding structure (303).

10. The cell lamination apparatus of claim 1, wherein the loading structure (303) is a manipulator.

11. A lamination machine, comprising: the cell stack assembly of any one of claims 1 to 10.