Soft-pack battery production system and method

Abstract

The present invention provides a production system and method for soft-pack batteries. The above-mentioned production system for soft-pack batteries includes: an aluminum plastic film bending mechanism, which includes an aluminum plastic film first folding component, an aluminum plastic film second folding component, and an aluminum plastic film third folding component; the aluminum plastic film bending mechanism uses wire cutting bending tools and post-bending heating methods to shape the aluminum plastic film, bends it three times, and preforms it multiple times to ensure the post-bending effect. The soft-pack battery prepared by this production system for soft-pack batteries is safe and reliable and has a wide range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of battery assembly, and in particular to a production system and method for soft-pack batteries. Background Art

[0002] With the development of the new energy industry, the application of electric vehicles is becoming more and more widespread. Soft-pack lithium-ion batteries are widely used in the market due to their advantages such as light weight, high specific capacity, good safety performance, small internal resistance, and flexible design. Of course, the driving range of electric vehicles, as well as the stability and safety of batteries, have attracted more and more attention. How to improve the driving range of electric vehicles, increase the energy density of power batteries, enhance the safety of power batteries, and improve the heat dissipation capacity of single cells has become the key to the future development of electric vehicles.

[0003] As the core of the energy system of electric vehicles, the power battery module needs to have a high energy density to enable electric vehicles to effectively travel longer distances. It must provide power stably and effectively to avoid problems caused by the failure of single cells, so as to ensure the safety and reliability of electric vehicles. Summary of the Invention

[0004] The present invention provides a production system and method for soft-pack batteries to solve the defect of poor quality of soft-pack batteries in the prior art and achieve the improvement of the quality and production efficiency of soft-pack batteries.

[0005] In a first aspect, the present invention provides a production system for soft-pack batteries, including: an aluminum plastic film bending mechanism, which includes an aluminum plastic film first folding component, an aluminum plastic film second folding component, and an aluminum plastic film third folding component; the aluminum plastic film first folding component includes a first upper die, a first lower die, a first folding knife, and a first heating block; the first upper die and the first lower die are used to clamp the aluminum plastic film; a first inclined surface is formed on the first lower die, and a second inclined surface adapted to the first inclined surface is formed on the first heating block, and the second inclined surface moves towards the first inclined surface; the first folding knife that can reciprocate linearly up and down is used to bend the aluminum plastic film so that the aluminum plastic film moves towards the first inclined surface; the aluminum plastic film second folding component includes a second upper die, a second lower die, and a second heating block; the distance between the second upper die and the second lower die is adjustable, and the second heating block for placing the aluminum plastic film is in separable contact with both the bottom surface of the second upper die and the top surface of the second lower die; the aluminum plastic film third folding component includes a third upper die, a third lower die, a second folding knife, and a third heating block; the third upper die and the third lower die are used to clamp the aluminum plastic film; the second folding knife that can reciprocate linearly up and down is used to bend the aluminum plastic film so that the aluminum plastic film contacts the end surface of the third lower die, and the third heating block moves towards the end surface of the third lower die.

[0006] In a second aspect, the present invention provides a method for manufacturing a soft-pack battery, including: loading and testing the battery cells; triple hemming of the aluminum plastic film of the battery cells; gluing the sides of the battery cells; cutting the tabs; stacking the battery cells; before stacking, it is necessary to apply glue to the front and back sides of the battery cells, apply glue to the insulation board, apply glue to the left side plate, apply glue to the right side plate, and apply glue to the foam; install the top plate and the bottom plate, and weld the top plate and the bottom plate; install the current collector plate; bend the tabs and perform tab welding; install the end cap and weld the end cap; the module is taken off the production line.

[0007] The soft-pack battery manufacturing system and method provided by the present invention include: an aluminum plastic film bending mechanism, which includes an aluminum plastic film first folding component, an aluminum plastic film second folding component, and an aluminum plastic film third folding component; the aluminum plastic film bending mechanism uses wire cutting bending tools and post-bending heating methods to shape the aluminum plastic film, performs three-fold bending and multiple pre-formings to ensure the post-bending effect. The soft-pack battery prepared by this soft-pack battery manufacturing system is safe and reliable and has a wide range of applications. Description of the Drawings

[0008] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0009] Figure 1 It is a schematic structural diagram of the circulating line body provided by the present invention;

[0010] Figure 2 It is a schematic structural diagram of the OCV test mechanism provided by the present invention;

[0011] Figure 3 It is a schematic structural diagram of the punching position detection mechanism provided by the present invention;

[0012] Figure 4 It is a schematic structural diagram of the NG unloading mechanism provided by the present invention;

[0013] Figure 5 It is a schematic structural diagram of the aluminum plastic film first folding mechanism provided by the present invention;

[0014] Figure 6 It is a schematic structural diagram of the aluminum plastic film second folding mechanism provided by the present invention;

[0015] Figure 7 It is a schematic structural diagram of the aluminum plastic film third folding mechanism provided by the present invention;

[0016] Figure 8 It is a schematic diagram of the first folding of the aluminum plastic film of the present invention;

[0017] Figure 9 Schematic diagram of the double-fold of the aluminum-plastic film of the present invention;

[0018] Figure 10 Schematic diagram of the triple-fold of the aluminum-plastic film of the present invention;

[0019] Figure 11 Schematic diagram of the core sticking mechanism of the present invention;

[0020] Figure 12 Schematic diagram of the tab cutting mechanism of the present invention;

[0021] Figure 13 Schematic diagram of the core stacking device of the present invention;

[0022] Figure 14 Schematic diagram of the flipping mechanism of the present invention;

[0023] Figure 15 Schematic diagram of the gluing mechanism of the present invention;

[0024] Figure 16 Schematic diagram of the top and bottom plate welding device of the present invention;

[0025] Figure 17 Schematic diagram of the current collector plate assembly device of the present invention;

[0026] Figure 18 Schematic diagram of the tab bending mechanism of the present invention;

[0027] Figure 19 Schematic diagram of the tab welding system of the present invention;

[0028] Figure 20 Schematic diagram of the end cap assembly device of the present invention. Detailed implementation manners

[0029] The following combines with Figures 1 to 20 Describe the soft-pack battery production system of the present invention.

[0030] Core loading and testing; including core tray on-line, core loading, OCV testing and punching position detection; discharging the cores that do not meet the requirements; wherein, the cores are transported through the carrier circulation line;

[0031] Such as Figure 1As shown in the figure, the vehicle circulation line body 1 of the embodiment of the present invention includes: an upper line body driving mechanism, a lower line body driving mechanism, an upper guide rail, a lower guide rail, a first lifting mechanism and a second lifting mechanism; the first lifting mechanism is used to drive the first auxiliary guide rail to move up and down so that the first auxiliary guide rail is docked with the upper guide rail or the lower guide rail; wherein, the first auxiliary guide rail is adapted to both the upper guide rail and the lower guide rail so that the battery cell carrier can slide; the second lifting mechanism is used to drive the second auxiliary guide rail to move up and down so that the second auxiliary guide rail is docked with the upper guide rail or the lower guide rail; wherein, the second auxiliary guide rail is adapted to both the upper guide rail and the lower guide rail so that the battery cell carrier can slide; the upper line body driving mechanism is used to drive the battery cell carrier located on the second auxiliary guide rail to move onto the upper guide rail and drive the battery cell carrier located on the upper guide rail to move onto the first auxiliary guide rail; the lower line body driving mechanism is used to drive the battery cell carrier located on the first auxiliary guide rail to move onto the lower guide rail and drive the battery cell carrier located on the lower guide rail to move onto the second auxiliary guide rail. It should be noted that in order to improve the intensiveness of the production line, the upper guide rail is located directly above the lower guide rail. Among them, the first lifting mechanism is located on the left side of the upper guide rail, and the second lifting mechanism is located on the right side of the upper guide rail. In the embodiment of the present invention, the battery cell carrier located on the upper guide rail places the battery cell to be processed. After the battery cell is processed, it is transferred to the next process. At this time, the battery cell carrier is in an empty state. The empty battery cell carrier moves from the upper guide rail to the first auxiliary guide rail. The first lifting mechanism changes the first auxiliary guide rail from a state flush with the upper guide rail to a state where the first auxiliary guide rail is flush with the lower guide rail. The first auxiliary guide rail is connected to the lower guide rail. The empty battery cell carrier moves from the first auxiliary guide rail to the lower guide rail; the empty battery cell carrier moves from the lower guide rail to the second auxiliary guide rail. The second lifting mechanism changes the second auxiliary guide rail from a state flush with the lower guide rail to a state where the second auxiliary guide rail is flush with the upper guide rail. The second auxiliary guide rail is connected to the upper guide rail. The empty battery cell carrier moves from the second auxiliary guide rail to the upper guide rail so as to place the battery cell on the battery cell carrier.

[0032] Both the upper line driving mechanism and the lower line driving mechanism include a slide table for driving the cell carrier to move. It should be noted that through the linear reciprocating motion of the slide table, the cell carrier can be driven to move along the length direction of the guide rail. It can be understood that both the upper line driving mechanism and the lower line driving mechanism further include a first cylinder connected to the slide table. A groove is provided at the bottom of the cell carrier, and the lifting end of the first cylinder is in separable contact with the groove. In the embodiment of the present invention, the slide table drives the first cylinder to perform linear reciprocating motion. When it is necessary to drive the cell carrier, the lifting end of the first cylinder is located in the groove, that is, the lifting end of the first cylinder is in a high position state. When the first cylinder needs to return to its original position to drive another cell carrier, the lifting end of the first cylinder is in its original position state. Both the upper line driving mechanism and the lower line driving mechanism further include a connecting plate connected to the slide table. A plurality of vertically arranged first cylinders are sequentially installed on the connecting plate along the length direction of the connecting plate. It should be noted that a plurality of vertically arranged first cylinders are sequentially installed on the connecting plate along the length direction of the connecting plate, and each first cylinder corresponds to a cell carrier. At this time, a single slide table can be used to drive a plurality of cell carriers to perform linear reciprocating motion. The carrier circulation line further includes a first limiting component. The first limiting component includes a second cylinder installed on the side of the upper guide rail. A limiting groove is provided at the bottom of the cell carrier, and the lifting end of the second cylinder is in separable contact with the limiting groove. It should be noted that the limiting groove and the groove are respectively located on both sides of the bottom of the cell carrier. That is, for the upper guide rail, the first cylinder and the second cylinder are respectively located on the left side surface and the right side surface of the upper guide rail. In the embodiment of the present invention, when positioning is required, the cell carrier is in a stationary state, and the lifting end of the second cylinder is located inside the limiting groove, so as to achieve precise positioning of the cell in the length direction of the cell. After the positioning is completed, the cell carrier is in a moving state, and the lifting end of the second cylinder is in its original position state.

[0033] On the basis of the above embodiment, the carrier circulation line further includes a second limiting component. The second limiting component includes a third cylinder installed on the side of the lower guide rail. The lifting end of the third cylinder is in separable contact with the limiting groove. It should be noted that the limiting groove and the groove are respectively located on both sides of the bottom of the cell carrier. That is, for the lower guide rail, the first cylinder and the third cylinder are respectively located on the left side surface and the right side surface of the lower guide rail.

[0034] In the embodiment of the present invention, when positioning is required, the cell carrier is in a stationary state, and the lifting end of the third cylinder is located inside the limiting groove, so as to achieve precise positioning of the cell in the length direction of the cell. After the positioning is completed, the cell carrier is in a moving state, and the lifting end of the third cylinder is in its original position state. It can be understood that the limiting groove can be in a V-shaped structure. Among them, the lifting ends of both the second cylinder and the third cylinder are provided with limiting parts adapted to the limiting groove.

[0035] Based on the above embodiments, the battery cell carrier includes a substrate, and rotatable pressing plate assemblies for pressing the battery cells are provided at both ends of the substrate. A driving assembly is correspondingly provided for each pressing plate assembly. It should be noted that each pressing plate assembly includes a pressing plate and an L-shaped connecting rod connected to the pressing plate. A gear is installed on the L-shaped connecting rod, and the gears are all rotatably installed on the substrate. That is, the pressing plate is correspondingly connected to two L-shaped connecting rods, and the two L-shaped connecting rods are correspondingly connected to a gear. The two gears are fixed on the substrate through a rotating shaft. The rotation of the gear is driven by the driving assembly to control the movement of the pressing plate.

[0036] The carrier circulation line body provided by the embodiment of the present invention adopts a follow-up battery cell carrier. Visual positioning is used for the first clamping. When positioning, it is ensured that the center line of the battery cell coincides with the center line of the guide rail, and then it is pressed, so as to ensure the accuracy of the entire battery cell through the accuracy of the guide rail.

[0037] As Figure 2 、 Figure 3 And Figure 4 As shown in the figure, the OCV testing mechanism 2 includes a frame body, a linear cylinder installed on the frame body, and a test piece installed at the free end of the linear cylinder; the punching position detection mechanism 3 includes a sliding table, a frame body installed at the free end of the sliding table, and sensors arranged oppositely installed on the frame body; the NG blanking mechanism 4 includes a two-dimensional motion mechanism, the two-dimensional motion mechanism includes a first sliding table and a second sliding table connected to each other, and a suction cup installed on the second sliding table.

[0038] Three-fold hemming of the aluminum plastic film of the battery cell;

[0039] As Figure 5 And Figure 8 As shown in the figure, the aluminum plastic film first folding mechanism 5 includes two aluminum plastic film first folding assemblies symmetrically arranged with respect to the battery cell. One aluminum plastic film first folding assembly corresponds to one side aluminum plastic film of the battery cell, and the other aluminum plastic film first folding assembly corresponds to the other side aluminum plastic film of the battery cell; each aluminum plastic film first folding assembly includes a first upper die, a first lower die, a first folding knife, and a first heating block; the first upper die and the first lower die are used to clamp the aluminum plastic film, that is, the bottom surface of the first upper die is in contact with the upper surface of the aluminum plastic film, and the top surface of the first lower die is in contact with the lower surface of the aluminum plastic film. The parts of the first upper die and the first lower die in contact with the battery cell are adapted to the shape of the battery cell; a first inclined surface is constructed on the first lower die, and a second inclined surface adapted to the first inclined surface is constructed on the first heating block, and the second inclined surface moves towards the first inclined surface; the first folding knife that can move up and down in a straight line reciprocating motion is used to bend the aluminum plastic film so that the aluminum plastic film moves towards the first inclined surface.

[0040] Based on the above embodiments, the first folding assembly of the aluminum-plastic film further includes a first sensor for detecting the position of the battery cell. It should be noted that the first sensor can be installed on one of the two first folding assemblies of the aluminum-plastic film. For example, the first sensor can be installed on the frame of a first folding assembly of the aluminum-plastic film. After the first sensor detects the battery cell, it can control the corresponding movements of the first lower die and the first upper die.

[0041] As Figure 6 and Figure 9 As shown, the second folding mechanism 6 of the aluminum-plastic film includes two second folding assemblies symmetrically arranged with respect to the battery cell. The second folding assembly of the aluminum-plastic film includes a second upper die, a second lower die, and a second heating block; the distance between the second upper die and the second lower die is adjustable, and the second heating block for placing the aluminum-plastic film is in a separable contact with both the bottom surface of the second upper die and the top surface of the second lower die. It should be noted that the second folding assembly of the aluminum-plastic film further includes a frame. The frame is installed on a sliding table. Above the frame, a linear driving mechanism is installed, and this linear driving mechanism is used to drive the second upper die to perform a linear reciprocating motion up and down. Below the frame, another linear driving mechanism is installed, and this linear driving mechanism is used to drive the second lower die to perform a linear reciprocating motion up and down. On the side of the frame, yet another linear driving mechanism is installed, and this linear driving mechanism is used to drive the second heating block to perform a linear reciprocating motion in the horizontal direction. The second heating block moves towards the aluminum-plastic film so that the aluminum-plastic film is placed on the second heating block; the second lower die moves upward so that the second heating block is placed on the second lower die; the second upper die moves downward to squeeze the aluminum-plastic film located on the second heating block, so that the aluminum-plastic film at 135° is bent into 180°.

[0042] Based on the above embodiments, a notch for placing the aluminum-plastic film is formed at the edge of the top surface of the second heating block. It should be noted that a rectangular-structured area is cut off at the edge of the top surface of the second heating block. This area is used to place the aluminum-plastic film, and moreover, this area can also limit the aluminum-plastic film to prevent the battery cell from moving in the width direction.

[0043] As Figure 7 and Figure 10As shown, the aluminum-plastic film three-fold mechanism includes two aluminum-plastic film three-fold components symmetrically arranged with respect to the battery cell. The aluminum-plastic film three-fold component includes an upper die III, a lower die III, a second folding knife, and a third heating block. The upper die III and the lower die III are used to clamp the aluminum-plastic film. The second folding knife that can move linearly up and down is used to fold the aluminum-plastic film so that the aluminum-plastic film comes into contact with the end face of the lower die III, and the third heating block moves towards the end face of the lower die III. It can be understood that the aluminum-plastic film three-fold component further includes a frame, the frame is installed on the sliding table, a linear drive mechanism is installed above the frame, and this linear drive mechanism is used to drive the upper die III to move linearly up and down. Another linear drive mechanism is installed below the frame, and this is used to drive the lower die III to move linearly up and down. Another linear drive mechanism is installed on the side of the frame, and this linear drive mechanism is used to drive the third heating block to move linearly in the horizontal direction. Another linear drive mechanism is also installed above the frame, and this linear drive mechanism is used to drive the second folding knife to move linearly up and down. The upper die III and the lower die III move towards the aluminum-plastic film simultaneously so that the upper die III and the lower die III fix the aluminum-plastic film. After fixing the aluminum-plastic film, the second folding knife moves downward, and the horizontal aluminum-plastic film is initially bent by the second folding knife, that is, the aluminum-plastic film moves towards the end face of the lower die III. After the initial bending of the aluminum-plastic film is completed, the second folding knife moves upward. At this time, the third heating block moves towards the bent aluminum-plastic film to perform the three-fold bending of the aluminum-plastic film. At this time, the aluminum-plastic film is bent at 90°. The end faces of the upper die III and the lower die III are both of a planar structure. The end faces of the upper die III and the lower die III are both the sides in contact with the second folding knife, and the second folding knife is in separable contact with the end face of the lower die III.

[0044] In the embodiment of the present invention, the aluminum-plastic film folding device further includes three battery cell pressing cylinders. The first battery cell pressing cylinder can be installed on one of the two aluminum-plastic film single-fold components. For example, the first battery cell pressing cylinder can be installed on the frame of an aluminum-plastic film single-fold component. The second battery cell pressing cylinder can be installed on one of the two aluminum-plastic film double-fold components. For example, the second battery cell pressing cylinder can be installed on the frame of an aluminum-plastic film double-fold component. The third battery cell pressing cylinder can be installed on one of the two aluminum-plastic film three-fold components. For example, the third battery cell pressing cylinder can be installed on the frame of an aluminum-plastic film three-fold component.

[0045] Gluing on the side of the battery cell;

[0046] Such as Figure 11As shown in the figure, the cell taping mechanism 8 of the present invention includes: a tape end fixing jaw 83, a tape pulling jaw 84, a cutter 85, and a taping assembly 81; the taping assembly 81 includes a first linear driving member, a substrate, a first taping head, a second taping head, and a stop block; the first taping head and the second taping head are mounted on the substrate, and the distance between the first taping head and the second taping head is adjustable; the stop block mounted on the substrate is located between the first taping head and the second taping head; the free end of the first linear driving member is connected to the substrate. It should be noted that the first taping head and the second taping head are arranged opposite to each other, and their working surfaces can be in contact with each other during taping or separated after taping is completed.

[0047] In an embodiment of the present invention, the tape moves downward under the action of the tape pulling jaw. At this time, the tape is located between the tape end fixing jaw 83 and the tape pulling jaw 84, and the tape is adhered to the side of the cell. At this time, the tape is first cut by the cutter 85, and the tape pulling jaw 84 releases the tape; the first linear driving member drives the first taping head and the second taping head to move towards the side of the cell, and the upper and lower tapes are respectively adhered by the first taping head and the second taping head, and the end face tape is pressed by the stop block located between the first taping head and the second taping head. The cell taping device provided by the present invention can realize the taping of U-shaped tapes through the first taping head and the second taping head, and can realize the perfect fit between the tape and the side of the cell through the stop block located between the first taping head and the second taping head, and the taping efficiency and quality are both greatly improved.

[0048] On the basis of the above embodiment, the cell taping device further includes a roll changing assembly 82. The roll changing assembly 82 includes a first pressing block and a second pressing block that are in separable contact and a first vacuum chuck and a second vacuum chuck that are in separable contact. A flat plate is fixedly installed between the first pressing block and the second pressing block. Among them, a through groove is formed on the flat plate. It should be noted that grooves are formed on the surfaces of the first pressing block and the second pressing block. Among them, this surface is the surface in contact with the tape. The first pressing block and the second pressing block that are in separable contact and the first vacuum chuck and the second vacuum chuck that are in separable contact are arranged in sequence along the tape unwinding direction.

[0049] In an embodiment of the present invention, after the spare tape roll is installed, the tape sequentially winds to the vacuum chuck. The cylinder drives the first pressing block and the second pressing block to press the tape, and the corresponding first vacuum chuck and the second vacuum chuck suck the tape. When changing the roll, the cylinder drives the first vacuum chuck and the second vacuum chuck arranged up and down to bond the two layers of tape, the upper and lower vacuum chucks are separated, and the two pressing blocks are released, and the roll change is completed.

[0050] The working process of the cell gluing device in the embodiment of the present invention is described in detail below:

[0051] Attach the tape to the bent side of the cell, with five tapes attached to a single side, for a total of ten tapes.

[0052] Step 1: After the battery cell reaches the gluing station, first, the positioning mechanism positions the battery cell carrier, and then the first gluing mechanism operates to stick the middle three sections of glue onto the battery cell. Step 2: Subsequently, the battery cell moves to the next station, and the second gluing mechanism sticks the two sections of glue at both ends of the battery cell. Step 3: At the flipping station, the battery cell is flipped and its side is changed, and the unglued side is flipped to the side of the gluing device. Step 4: Repeat the above operations to complete the gluing on the other side of the battery cell. Step 5: After completion, the battery cell flows to the gluing inspection station. Step 6: Conduct visual inspection on the battery cell, detect the width of the aluminum-plastic film after gluing, and check whether the dimensions are qualified. If OK, continue with the next process; if NG, the NG gripper manipulator grabs it out and sends it to the buffer area.

[0053] Tab cutting;

[0054] As Figure 12 shown, the tab cutting mechanism 9 includes: two symmetrically arranged tab cutting components 91 and two visual inspection components 93 for photographing the tabs on both sides of the battery cell; the two symmetrically arranged tab cutting components 91 are respectively used to cut the left tab and the right tab of the battery cell, and the two symmetrically arranged visual inspection components 93 are respectively used to align the left tab and the right tab of the battery cell. The visual inspection component 93 includes a camera and an image processor; the tab cutting component 91 includes a frame that slides in the horizontal direction. A lower pre-pressing pad mounting plate perpendicular to it is fixedly installed on the side surface of the frame. A cutting component mounting plate perpendicular to it is also slidably installed on the side surface of the frame. The cutting component mounting plate is located above the lower pre-pressing pad mounting plate and slides in the vertical direction, that is, the cutting component mounting plate moves towards the lower pre-pressing pad mounting plate; an upper pre-pressing block and a cutting knife are installed on the bottom surface of the cutting component mounting plate, and a lower pre-pressing pad arranged opposite to the upper pre-pressing block is installed on the top surface of the lower pre-pressing pad mounting plate. It should be noted that the upper pre-pressing block and the lower pre-pressing pad clamp the upper and lower surfaces of the tab, and the tab is cut by the cutting knife arranged close to the upper pre-pressing block.

[0055] In the embodiment of the present invention, first, two visual inspection components are used to photograph the tabs on both sides of the battery cell respectively to obtain the theoretical center of the battery cell, and according to the total length required for the battery cell, calculate the lengths that need to be cut for the tabs on both sides; the two frames slide corresponding distances respectively, and then the tabs are cut by the cutting knife; the sliding distances of the frames are calculated based on the theoretical center of the battery cell and the lengths that need to be cut for the tabs, that is, the sliding distances of the two frames can be different. The tab cutting device provided by the embodiment of the present invention can adjust the position of the cutting knife in real time according to the position of the battery cell, so that the lengths of the two tabs are always equal, and the battery cell that meets the requirements can be cut.

[0056] Based on the above embodiments, the tab cutting assembly further includes an upper pre-pressing block mounting plate installed on the cutting assembly mounting plate. The distance between the upper pre-pressing block mounting plate and the cutting assembly mounting plate is adjustable. An upper pre-pressing block is installed on the upper pre-pressing block mounting plate. It should be noted that the upper pre-pressing block is installed on the bottom surface of the upper pre-pressing block mounting plate. The upper pre-pressing block mounting plate is installed on the cutting assembly mounting plate through two guide rods. By moving the guide rods up and down, the distance between the upper pre-pressing block mounting plate and the cutting assembly mounting plate can be adjusted. To improve the stability of sliding, a vertically arranged linear guide rail is installed on the side of the frame body, and the side of the cutting assembly mounting plate is assembled with the linear guide rail.

[0057] The tab cutting mechanism 9 further includes two symmetrically arranged first tab leveling assemblies 92 and two second tab leveling assemblies; in the moving direction of the battery cell, there are two first tab leveling assemblies 92, two tab cutting assemblies 91, and two second tab leveling assemblies in sequence; the first tab leveling assembly and the second tab leveling assembly include a cabinet body that slides horizontally, and a lower pre-leveling block mounting plate and an upper pre-leveling block mounting plate that slide vertically are installed on the side of the cabinet body; an upper pre-leveling block is installed on the upper pre-leveling block mounting plate, and a lower pre-leveling block arranged opposite to the upper pre-leveling block is installed on the lower pre-leveling block mounting plate. Among them, the upper pre-leveling block mounting plate is directly above the lower pre-leveling block mounting plate. It should be noted that a vertically arranged linear guide rail is installed on the side of the cabinet body, and the side of the upper pre-leveling block mounting plate is assembled with the linear guide rail. A cylinder is installed on the cabinet body, and the movable end of the cylinder is connected to the upper pre-leveling block mounting plate through a planar flange type weighing and measuring sensor.

[0058] It can be understood that the first tab leveling assembly and the second tab leveling assembly further include a linear guide rail and a cylinder. The linear guide rail is assembled with the bottom of the cabinet body, and the movable end of the cylinder is connected to the cabinet body. The tab cutting mechanism further includes a stepping conveyor line 94 for conveying the battery cell 95. A battery cell fixing seat is installed on the fixed bracket of the stepping conveyor line 94, and two battery cell clamping assemblies are correspondingly arranged for each battery cell fixing seat.

[0059] In an embodiment of the present invention, the two fixed brackets of the step conveyor line 94 are in a stationary state, the moving bracket located between the two fixed brackets is in a moving state, and the movement path of the moving bracket is in a figure-eight shape. A battery cell fixing seat is installed on one of the fixed brackets, and another battery cell fixing seat is installed on the other fixed bracket. The two battery cell fixing seats are used to place the two ends of the battery cell, that is, the battery cell 95 is placed horizontally on the step conveyor line 94. It should be noted that a battery cell clamping assembly is installed on each side of a battery cell fixing seat, and the battery cell clamping assembly is used to clamp both sides of the battery cell. That is, the two battery cell clamping assemblies are arranged in sequence along the length direction of the fixed bracket. Among them, the battery cell clamping assembly includes a cylinder, and a push plate is installed at the movable end of the cylinder, and the push plate contacts or separates from the side surface of the battery cell. It can be understood that a battery cell fixing seat can also correspond to only one battery cell clamping assembly, and there is only one side surface of the battery cell fixing seat provided with a through groove adapted to the push plate. At this time, the other opposite side surface of the battery cell fixing seat can be used as a reference surface. Among them, the step conveyor line 94 is located at the middle position between the two tab cutting assemblies 91.

[0060] For the tab cutting method, first, two vision detection components 93 are used to take pictures of the tabs on both sides of the battery cell 95 respectively to obtain the theoretical center of the battery cell, and calculate the lengths of the tabs on both sides that need to be cut according to the total length required for the battery cell; the two frames slide corresponding distances respectively, and then the tabs are cut by a cutting knife; the sliding distances of the frames are calculated based on the theoretical center of the battery cell and the lengths of the tabs that need to be cut, that is, the sliding distances of the two frames can be different. The tab cutting method provided by the embodiment of the present invention can adjust the position of the cutting knife in real time according to the position of the battery cell, so that the lengths of the two tabs are always equal, and the battery cell that meets the requirements can be cut.

[0061] Battery cell stacking; among them, before stacking, it is necessary to apply glue to the front and back sides of the battery cell, the insulating board, the left side plate, the right side plate, and the foam.

[0062] As Figure 13 shown, the battery cell stacking device 10 of the embodiment of the present invention includes: a stacking tooling 102, and the stacking tooling 102 includes a substrate, and two battery cell pressing components are installed on the surface of the substrate. The two battery cell pressing components are symmetrically arranged. The first battery cell pressing component corresponds to the left end of the battery cell, and the second battery cell pressing component corresponds to the right end of the battery cell.

[0063] The battery cell pressing assembly includes a base, a U-shaped mounting plate, and a roller. The roller is rotatably mounted within the area enclosed by the U-shaped mounting plate. The U-shaped mounting plate is slidably mounted on the surface of the base. The working length of the roller is adapted to the width of the battery cell, and the width of the battery cell is adapted to the area enclosed by the U-shaped mounting plate, that is, the battery cell can be placed in the area enclosed by the U-shaped mounting plate. The opening of the U-shaped mounting plate faces the horizontally arranged battery cell, and the end of the battery cell contacts the inner wall of the bottom of the U-shaped mounting plate. Among them, the base is fixedly mounted on the surface of the substrate, and the height of the base is designed according to the height of the module, which is not specifically limited here. And the base can be set as a liftable structure, and the length direction of the roller is consistent with the width direction of the battery cell.

[0064] In the embodiment of the present invention, a plurality of battery cells are stacked in sequence and placed on the surface of the substrate. In the initial state, the roller and the U-shaped mounting plate are not located directly above the battery cells; after the battery cells are stacked, through the sliding of the U-shaped mounting plate, the battery cells are located within the area enclosed by the U-shaped mounting plate. At this time, the roller contacts the surface of the uppermost battery cell, and the battery cells are pressed by the roller so that the battery cells are in a compressed state. The battery cell stacking device provided by the embodiment of the present invention solves the problem that the tabs on both sides of the soft-pack battery cell cannot be mechanically positioned by this stacking tooling; the stacking tooling is designed with a pressing and holding mechanism to ensure that the positions of the stacked battery cells can be kept in a stable state.

[0065] On the basis of the above embodiment, the battery cell pressing assembly further includes a linear guide rail, a connecting seat, an elastic member, and a vertical plate; the vertical plate is vertically mounted on the base, the linear guide rail is horizontally mounted on the base, and the length direction of the linear guide rail is the same as the length direction of the battery cell; one end of the elastic member is connected to the vertical plate, and the other end is connected to the connecting seat; the connecting seat is assembled with the linear guide rail, and the connecting seat moves along the length direction of the linear guide rail, and the U-shaped mounting plate is connected to the connecting seat. It should be noted that in the initial state, the elastic member is in an extended state, that is, the connecting seat moves in a direction away from the vertical plate. Among them, the elastic member can be a spring, and multiple springs can be arranged between the vertical plate and the connecting seat to ensure the stability of the connection between the two and sufficient elastic driving force.

[0066] On the basis of the above embodiment, at least one battery cell limiting seat is installed on the surface of the substrate and between two battery cell pressing assemblies. It should be noted that the number of the battery cell limiting seats can be three, and the battery cell limiting seats can restrict in the width direction of the battery cell. Cooperating with the restriction of the U-shaped mounting plate in the width direction of the battery cell, accurate positioning of the battery cell can be achieved.

[0067] On the basis of the above embodiment, the battery cell stacking device further includes a jacking and positioning mechanism for adjusting the height of the stacking tooling. It should be noted that the jacking and positioning mechanism can be a lifting cylinder, and the height of the stacking tooling is adjusted in real time through the jacking and positioning mechanism.

[0068] The battery cell stacking device 10 further includes a module pressing mechanism 104. The module pressing mechanism 104 includes a pressing plate, a linear driving mechanism, and a pressure sensor. The free end of the linear driving mechanism is connected to the pressing plate through the pressure sensor. It should be noted that the linear driving mechanism can be a lifting cylinder, and the height of the pressing plate is adjusted through the action of the lifting cylinder. Among them, by setting the pressure sensor, the pressure of the pressing plate on the battery cell can be measured in real time to prevent damage to the structure of the battery cell. The battery cell stacking device further includes a vision mechanism 103, and the vision mechanism 103 is used to obtain images at the top corners of the battery cells and / or side plates. It should be noted that whether the top corners of two adjacent battery cells above and below are aligned can be used to determine whether the stacking quality of the battery cells meets the requirements.

[0069] In the embodiment of the present invention, visual positioning is adopted, and the pressing cylinder is skillfully used to realize the photographing and positioning of the side plate battery cells at different heights by a fixed-focus camera.

[0070] On the basis of the above embodiment, the battery cell stacking device further includes at least one feeding manipulator 101. It should be noted that there are many types of stacked materials, four types of materials, and after stacking, it is necessary to press and hold. The feeding manipulator 101 is used for alternate stacking to pick and place the four materials at two stacking stations.

[0071] In the embodiment of the present invention, a conveying line body is installed on the cabinet. The conveying line body is used to convey the stacking tooling 102. There are two stacking stations arranged along the conveying direction of the conveying line body. Each stacking station is correspondingly installed with a stacking tooling 102, a module pressing mechanism 104, and two sets of vision mechanisms 103. The two stacking stations share three feeding manipulators 101, and each stacking tooling 102 corresponds to a jacking and positioning mechanism. Among them, the feeding manipulator 101 adopts a suction cup structure, and the three feeding manipulators 101 are used for alternate stacking to stack four materials, namely foam and insulating board.

[0072] Gluing the front and back sides of the battery cell;

[0073] Such as Figure 14As shown, the cell gluing device includes a flipping mechanism 11, which includes a first driving member, a first suction cup group 111, a second driving member, a third driving member, a rotating member, and a second suction cup group 112. The free end of the first driving member is connected to the first suction cup group 111. The free end of the second driving member is connected to the fixed end of the third driving member. The free end of the third driving member is connected to the fixed end of the rotating member. The free end of the rotating member is connected to the second suction cup group 112. In the embodiment of the present invention, under the action of the third driving member, the second suction cup group 112 moves downward to suck the cell. After the cell is sucked, under the action of the third driving member, the second suction cup group 112 moves upward. Under the action of the rotating member, the cell rotates 180°. After the cell rotation is completed, under the action of the first driving member, the first suction cup group 111 moves downward to suck the cell located on the second suction cup group 112, and at this time, the second suction cup group 112 releases. After the cell is sucked, under the action of the third driving member, the second suction cup group 112 moves to the right to make space, and under the action of the first driving member, the first suction cup group 111 moves upward. The cell gluing device provided by the present invention can quickly and accurately flip the cell under the action of the flipping mechanism, so as to glue the front and back sides of the cell. It should be noted that in order to improve the flipping efficiency, the first suction cup group 111 can correspond to two second suction cup groups 112, and at this time, the flipping operation can be performed on two cells simultaneously.

[0074] On the basis of the above embodiment, the flipping mechanism further includes a fourth driving member and a frame. The free end of the fourth driving member is connected to the frame. The fixed ends of the first driving member and the second driving member are both connected to the frame. It should be noted that after the first suction cup group 111 sucks the cell, under the action of the third driving member, the second suction cup group 112 moves to the right to make space, and under the action of the first driving member, the first suction cup group 111 moves upward. Under the action of the fourth driving member, the frame moves downward, and the first suction cup group 111 places the cell on the line carrier, and the cell flipping is completed. It can be understood that the first driving member, the second driving member, the third driving member, and the fourth driving member are all linear cylinders, and the rotating member is a rotating cylinder.

[0075] As Figure 15 As shown, the cell gluing device further includes a gluing mechanism, which includes a three-dimensional motion assembly and a glue head 113. The three-dimensional motion assembly is connected to the glue head 113. It should be noted that the three-dimensional motion assembly includes a first slide, a second slide, and a third slide connected in sequence. The free end of the third slide is connected to the glue head 113. Among them, the first slide is installed on the mounting frame. Through the driving of the first slide, the second slide, and the third slide, the glue head 113 can move in multiple dimensions.

[0076] Based on the above embodiments, the gluing mechanism further includes a vision component, which is installed at the free end of the third slide table. It should be noted that the vision component includes an image acquirer and a light source. Through the image acquirer, an image of the glued battery cell can be obtained, so as to analyze the gluing quality of the battery cell.

[0077] Based on the above embodiments, the gluing mechanism further includes a glue spraying station, and glue spraying baffles 115 are constructed on opposite sides of the glue spraying station. It should be noted that the glue spraying station is a liftable station, and a rectangular and hollow placement seat is constructed on the glue spraying station. The placement seat is adapted to the battery cell, and glue spraying baffles 115 are constructed on opposite sides of the placement seat.

[0078] Based on the above embodiments, a glue receiving box 114 is arranged near the glue spraying station. It should be noted that by arranging the glue receiving box 114, it is possible to prevent the excess glue from falling and affecting the environment after dropping. The battery cell gluing device further includes a removal mechanism, and the removal mechanism includes a two-dimensional motion mechanism and a third suction cup group; the free end of the two-dimensional motion mechanism is connected to the third suction cup group. It should be noted that the two-dimensional motion mechanism includes a fifth driving member and a sixth driving member. The free end of the fifth driving member is connected to the fixed end of the sixth driving member, and the free end of the sixth driving member is connected to the third suction cup group. It can be understood that the removal mechanism further includes a waste collection platform, and a battery cell placement position is constructed on the waste collection platform.

[0079] In the embodiment of the present invention, when the vision component determines that the gluing quality of the battery cell is unqualified, the third suction cup group sucks the unqualified battery cell and places it on the waste collection platform.

[0080] Install the top plate and the bottom plate, and weld the top plate and the bottom plate;

[0081] As Figure 16As shown in the figure, the top and bottom plate welding device 12 includes a welding robot and two symmetrically arranged top and bottom plate welding and pressing components 122, and each top and bottom plate welding and pressing component 122 is correspondingly connected to a top and bottom plate assembly component 121; the two top and bottom plate assembly components 121 are respectively used for assembling the bottom plate and the top plate; each top and bottom plate assembly component includes an X-direction adjusting plate, a Y-direction adjusting plate, a positioning plate, and a bottom plate; wherein, the bottom plate, the X-direction adjusting plate, and the Y-direction adjusting plate are connected in sequence; the X-direction adjusting plate is slidably installed on the right side surface of the bottom plate, the Y-direction adjusting plate is slidably installed on the right side surface of the X-direction adjusting plate, and the sliding directions of the X-direction adjusting plate and the Y-direction adjusting plate are perpendicular to each other; wherein, the X-direction adjusting plate moves along the X-axis direction, that is, the horizontal direction, and the Y-direction adjusting plate moves along the Y-axis direction, that is, the vertical direction; the positioning plate is installed at the edge of the Y-direction adjusting plate, a top and bottom plate incoming material positioning pin is installed on the right side surface of the Y-direction adjusting plate, and a top and bottom plate installation positioning pin is installed on the positioning plate. It should be noted that the right side surface of the bottom plate faces the left side surface of the X-direction adjusting plate, and the right side surface of the X-direction adjusting plate faces the left side surface of the Y-direction adjusting plate.

[0082] Based on the above embodiment, a proximity sensor is installed on the side surface of the Y-direction adjusting plate. It should be noted that a proximity sensor is installed on the right side surface of the Y-direction adjusting plate. Among them, the distance between the top plate or the bottom plate and the Y-direction adjusting plate can be detected through the proximity sensor.

[0083] Based on the above embodiment, a magnet for adsorbing the top and bottom plates to be installed is installed on the side surface of the Y-direction adjusting plate. It should be noted that a magnet for adsorbing the top plate or the bottom plate to be installed is installed on the right side surface of the Y-direction adjusting plate. Through magnetic connection, it can be ensured that the top plate or the bottom plate will not be damaged during assembly.

[0084] Based on the above embodiment, four top and bottom plate incoming material positioning pins are installed on the side surface of the Y-direction adjusting plate, and the four top and bottom plate incoming material positioning pins are respectively located at the four corners of the Y-direction adjusting plate. It should be noted that in order to improve the positioning accuracy of the top plate or the bottom plate, four top and bottom plate incoming material positioning pins are installed on the right side surface of the Y-direction adjusting plate.

[0085] Based on the above embodiment, the positioning plate includes an upper positioning plate and a lower positioning plate arranged symmetrically, and the upper positioning plate and the lower positioning plate are respectively installed at the upper and lower edges of the Y-direction adjusting plate. It should be noted that the upper positioning plate is installed at the upper edge of the Y-direction adjusting plate, the lower positioning plate is installed at the lower edge of the Y-direction adjusting plate, and a top and bottom plate installation positioning pin is configured on the lower positioning plate.

[0086] On the basis of the above embodiments, each top-bottom plate assembly component further includes a first fixing block and a locking pin. The first fixing block is installed on the side surface of the X-direction adjusting plate, and the locking pin movably installed on the first fixing block is threadedly connected to the Y-direction adjusting plate. It should be noted that, in order to improve stability, two first fixing blocks are installed on the right side surface of the X-direction adjusting plate. The locking pin can ensure that the Y-direction adjusting plate will not slip off.

[0087] On the basis of the above embodiments, a vertically arranged first linear guide rail is installed on the side surface of the X-direction adjusting plate, and the Y-direction adjusting plate is assembled with the first linear guide rail. It should be noted that two vertically arranged first linear guide rails are installed on the right side surface of the X-direction adjusting plate, and the two first fixing blocks are located between the two first linear guide rails.

[0088] On the basis of the above embodiments, two horizontally arranged second linear guide rails are installed on the right side surface of the bottom plate, and the X-direction adjusting plate is assembled with the two second linear guide rails. It should be noted that the two second linear guide rails are respectively the first second linear guide rail and the second second linear guide rail. The first second linear guide rail and the second second linear guide rail are at the same height and are arranged at a certain distance apart.

[0089] On the basis of the above embodiments, two second fixing blocks are installed on the right side surface of the bottom plate and are located between the two second linear guide rails. An elastic member is installed between the two second fixing blocks. An active block is connected to the elastic member, and the active block is connected to the left side surface of the X-direction adjusting plate. Among them, the two second fixing blocks are respectively the first second fixing block and the second second fixing block. The first second fixing block and the second second fixing block are at the same height and are arranged at a certain distance apart. The first second linear guide rail, the second second linear guide rail, the first second fixing block and the second second fixing block are at the same height. It should be noted that the horizontally arranged elastic member can be a compression spring. Among them, the active block is sleeved on the compression spring, that is, the active block is at the same height as the first second fixing block and the second second fixing block. It can be understood that by setting the elastic member, the X-direction adjusting plate can be ensured to have a certain reset function. It should be noted that the top-bottom plate welding and pressing assembly 122 includes a linear driving member, and the linear driving member can be a first air cylinder. The active end of the first air cylinder is connected to the left side surface of the bottom plate.

[0090] On the basis of the above embodiments, the top-bottom plate welding and pressing assembly 122 further includes a cylinder mounting plate for mounting the first air cylinder. The active end of the first air cylinder is connected to the side surface of the bottom plate through a connecting seat, and the connecting seat is slidably connected to the cylinder mounting plate. It should be noted that the first air cylinder is installed on the cylinder mounting plate. The active end of the first air cylinder is connected to the left side surface of the bottom plate through an L-shaped connecting seat. A horizontally arranged linear guide rail is installed on the cylinder mounting plate, and the connecting seat is assembled with the linear guide rail.

[0091] Based on the above embodiments, the top and bottom plate welding device further includes a side plate welding pressing assembly 123. The side plate welding pressing assembly includes a pressing plate that can perform linear reciprocating motion up and down. The pressing plate is in separable contact with the side plate of the soft-pack battery module. It should be noted that the side plate welding pressing assembly further includes a second cylinder for driving the pressing plate. The movable end of the second cylinder is connected to the top surface of the pressing plate through a pressure sensor.

[0092] In the embodiment of the present invention, the top and bottom plate welding device further includes a cabinet. At the central position of the cabinet, there is a placement seat for preventing the soft-pack battery module. An installation frame is installed on the cabinet. The cylinder mounting plate is installed on the installation frame. And at the central position of the installation frame, there is also a vertically arranged second cylinder installed. A vertically arranged linear guide rail is installed on the installation frame. The pressing plate is assembled with the linear guide rail through an adapter seat. Among them, the two linear guide rails are symmetrically arranged with respect to the second cylinder.

[0093] Install the current collector plate;

[0094] As Figure 17 shown, the current collector plate assembly device 13 includes: a module pressing mechanism and a current collector plate installation mechanism 131; the module pressing mechanism includes two symmetrically arranged module limiting components 134. Each module limiting component 134 includes a slidable positioning fixture mounting plate. The two positioning fixture mounting plates can approach or move away from each other, so as to be able to adapt to soft-pack battery modules of different sizes; through grooves are provided on the positioning fixture mounting plate for the soft-pack battery module to pass through; an upper limiting plate is installed on the upper surface of the through groove, and a lower lifting plate is installed on the lower surface of the through groove. The distance between the upper limiting plate and the lower lifting plate is adjustable. The upper limiting plate is always in a fixed state, and the lower lifting plate can be in a moving state. The upper limiting plate is in contact with the upper surface of the soft-pack battery module, and the lower lifting plate is in contact with the lower surface of the soft-pack battery module; a side clamping plate is installed on the left surface of the through groove, and a side positioning plate is installed on the right surface of the through groove. The distance between the side clamping plate and the side positioning plate is adjustable. Both the side clamping plate and the side positioning plate can be in a moving state. The side clamping plate is in contact with the left side surface of the soft-pack battery module, and the side positioning plate is in contact with the right side surface of the soft-pack battery module.

[0095] In the embodiment of the present invention, there are two current collector plate mounting mechanisms 131 arranged symmetrically. The current collector plate mounting mechanism 131 includes a first linear driving member and a clamping assembly. The clamping assembly includes a current collector plate positioning seat and a first clamping member mounted on the first linear driving member, and the current collector plate positioning seat is fixed on the first clamping member. It should be noted that the first linear driving member can be a slide table, the slide table is mounted on the frame, the slide table is connected to the first clamping member through a cantilever, the first clamping member can be a clamping cylinder, and the current collector plate positioning seat is mounted on the housing of the clamping cylinder, that is, the current collector plate positioning seat is located between the two clamping fingers of the clamping cylinder. Among them, the extending direction of the cantilever is perpendicular to the moving direction of the slide table, and the moving direction of the clamping cylinder is consistent with the moving direction of the slide table. In the embodiment of the present invention, after the tooling plate is in place, the module is lifted by two module limiting components, and the module is separated from the tooling plate by about 20 mm, and then the module is positioned in three directions through the module limiting components; after the module is successfully positioned, the current collector plate is assembled with the tab through the current collector plate mounting mechanism 131. The current collector plate assembly device provided by the embodiment of the present invention has a simple and reliable structure, and solves the consistency problem of the tooling plate through two module limiting components.

[0096] The current collector plate mounting mechanism 131 further includes a second linear driving member connected to the first linear driving member. The driving directions of the first linear driving member and the second linear driving member are the same, and the first clamping member is mounted on the second linear driving member. It should be noted that the second linear driving member is a telescopic slide table cylinder, the second linear driving member is mounted on the cantilever, and the clamping cylinder is mounted on the movable end of the telescopic slide table cylinder.

[0097] On the basis of the above embodiment, the current collector plate mounting mechanism 131 further includes a current collector plate limiting block mounted on the first linear driving member, and the current collector plate limiting block can move towards the current collector plate positioning seat. It should be noted that the current collector plate limiting block is mounted on another telescopic slide table cylinder to realize its movement in the vertical direction. The telescopic slide table cylinder is mounted on the cantilever through a mounting plate, and the moving direction of the current collector plate limiting block is perpendicular to the moving direction of the current collector plate positioning seat.

[0098] The current collector plate assembly device further includes a tab guiding mechanism 132. The tab guiding mechanism 132 includes a third linear driving member and a comb plate connected to the third linear driving member. A serrated groove adapted to the tab is formed on the comb plate. It should be noted that the third linear driving member is mounted on the other side of the positioning fixture mounting plate. The third linear driving member can be a telescopic slide table cylinder, and the comb plate is driven by the third linear driving member to move along the length direction of the tab.

[0099] The manifold assembly device further includes a robot fixture 133. The robot fixture 133 includes a robotic arm, and a second clamping member is installed on the robotic arm. It should be noted that two second clamping members arranged symmetrically can be installed on the robotic arm. The second clamping member can be a clamping cylinder, and a suction member is installed on the housing of the clamping cylinder. That is, the suction member is located between the two jaws of the clamping cylinder. Moreover, an elastic member is installed on the suction member to achieve flexible contact with the manifold.

[0100] Based on the above embodiments, the manifold assembly device further includes a loading box 137 and a buffer mechanism 136 for primary positioning of the manifold. It should be noted that the loading box 137 is used to place the manifold. The robot fixture 133 first takes out the manifold in the loading box 137 and places it on the buffer mechanism 136 to complete primary positioning. Then, the robot fixture 133 takes out the manifold on the buffer mechanism 136 and places it on the secondary positioning mechanism 135 to complete secondary positioning. Finally, the robot fixture 133 takes out the manifold on the secondary positioning mechanism 135 and places it on the manifold positioning seat to complete the loading of the manifold.

[0101] Tab bending;

[0102] As Figure 18 shown, the tab bending device 14 includes: a three-dimensional motion mechanism and a bending and flattening mechanism connected to the three-dimensional motion assembly. The bending and flattening mechanism includes a bending assembly and a flattening assembly arranged side by side. The bending assembly includes a cylinder, a bending piece 142, and a bending tooling mounting plate. The movable end of the cylinder is connected to the bending tooling mounting plate, and the bending piece 142 is slidably installed on the bending tooling mounting plate. The flattening assembly includes a flattening mechanism mounting seat and a circular roller 141, and the circular roller 141 is rotatably installed on the flattening mechanism mounting seat. It should be noted that the three-dimensional motion mechanism can adjust the movement of the bending assembly and the flattening assembly in the X-axis direction, Y-axis direction, and Z-axis direction. Moreover, the movement of the cylinder can further finely adjust the movement of the bending piece 142 in the X-axis direction, and the sliding of the bending piece 142 on the bending tooling mounting plate can further finely adjust the movement of the bending piece 142 in the Y-axis direction.

[0103] In an embodiment of the present invention, the bending assembly and the flattening assembly are moved to the working area through the movement of a three-dimensional motion mechanism; through the operation of a cylinder, the bending piece 142 moves a certain distance in the X-axis direction, so that the bending piece 142 is arranged to coincide with the tab to be bent, and then the three-dimensional motion mechanism drives the bending piece 142 to move a certain distance in the Y-axis direction, thereby completing the bending work of the tab; after the tab bending is completed, through the operation of the cylinder, the bending piece 142 moves a certain distance in the X-axis direction to complete the reset of the bending piece 142, that is, the bending piece does not interfere with the work of the circular roller 141; the three-dimensional motion mechanism drives the circular roller 141 to move a certain distance in the X-axis direction, so that the circular roller 141 contacts the tab, and the three-dimensional motion mechanism then drives the circular roller 141 to move a certain distance in the Y-axis direction, thereby completing the flattening work of the bent tab. The tab bending device provided by the embodiment of the present invention is convenient to use, can complete the bending and flattening work of the tab at the same time, and the working efficiency and effect can reach the expected goal.

[0104] On the basis of the above embodiment, the flattening assembly further includes a roller support frame and a flattening wheel support shaft. The roller support frame is installed on the flattening mechanism mounting seat, and the flattening wheel support shaft is rotatably installed on the roller support frame. The circular roller with a hollow structure is sleeved on the flattening wheel support shaft. It should be noted that the flattening assembly further includes a linear bearing, a guide shaft and an elastic member. The guide shaft is installed on the linear bearing, the guide shaft is connected to the flattening mechanism mounting seat, and the elastic member sleeved on the guide shaft is located between the flattening mechanism mounting seat and the linear bearing. Among them, the linear bearing is installed on the linear bearing mounting seat of the flattening mechanism. Among them, the elastic member can be a rectangular spring. It can be understood that the head end of the guide shaft is installed on the flattening mechanism mounting seat through a guide rod locking block, and the tail end of the guide shaft is installed with a shaft end block. Among them, the extending direction of the vertically arranged flattening wheel support shaft is consistent with the direction of the Z axis; the extending direction of the horizontally arranged guide shaft is consistent with the direction of the X axis.

[0105] In an embodiment of the present invention, a vision detection device can also be set up to capture an image of the tab after flattening through a camera, analyze and process the above image, and according to the result, adjust the fitting state of the tab and the bus bar again through the coordinated work of the bending piece 142 and the circular roller 141.

[0106] Tab welding;

[0107] Such as Figure 19As shown, the tab welding system 15 includes: a soft-pack battery module positioning mechanism 153 for positioning the soft-pack battery module, a tab pressing mechanism for making the tab and the bus bar fit together, and a tab welding mechanism for welding the tab and the bus bar; the tab pressing mechanism includes a tab pressing assembly 152, and the tab pressing assembly 152 includes a slidable pressing assembly mounting plate, two symmetrically arranged telescopic cylinders, two symmetrically arranged tab pressing heads, and two symmetrically arranged pressing head sliders; the fixed ends of the two telescopic cylinders are both hinged to the pressing assembly mounting plate, the movable end of one telescopic cylinder is hinged to one pressing head slider, and the movable end of the other telescopic cylinder is hinged to the other pressing head slider; the two pressing head sliders are both slidably mounted on the pressing assembly mounting plate, and the sliding direction of the pressing head slider is perpendicular to that of the pressing assembly mounting plate; one tab pressing head is mounted on one pressing head slider, and the other tab pressing head is mounted on the other pressing head slider. It should be noted that through the independent drive of the two telescopic cylinders and the independent sliding of the two pressing head sliders, the two tab pressing heads can work independently, so as to be able to adapt to soft-pack battery modules of different specifications. It can be understood that the sliding direction of the pressing head slider is perpendicular to that of the pressing assembly mounting plate, that is, the pressing assembly mounting plate slides along the X-axis direction, and the pressing head slider slides along the Y-axis direction. Among them, the pressing assembly mounting plate is part of the third slide table, and the power mechanism of this third slide table is a ball screw, and the power source of the ball screw can be a servo motor. The third slide table can be installed and fixed through two vertically arranged brackets, and the height of the brackets can make the position of the tab pressing head match the position of the tab. The power source of the pressing head slider is a telescopic cylinder. Through the extension movement of the telescopic cylinder, the tab pressing head moves towards the tab, and through the shortening movement of the telescopic cylinder, the tab pressing head moves away from the tab. It can be understood that the rectangular tab pressing head matches the tab, that is, the shape and size of the tab pressing head are the same as those of the tab. Among them, in order to facilitate the replacement and maintenance of the tab pressing head, the tab pressing head is detachably mounted on the pressing head slider. For example, the tab pressing head is mounted on the pressing head slider by means of snap connection.

[0108] The tab welding system further includes two sets of dust extraction components. Each dust extraction component includes a dust extraction pipe, and each tab pressing head is provided with an air extraction through hole; the intake end of a dust extraction pipe mounted on one tab pressing head is arranged towards the air extraction through hole, and the intake end of the other dust extraction pipe mounted on the other tab pressing head is arranged towards the air extraction through hole. It should be noted that the tab pressing head is provided with an air extraction through hole penetrating two opposite sides, and an air extractor can be installed at the outlet end of the dust extraction pipe.

[0109] Based on the above embodiments, the tab pressing mechanism further includes a first displacement sensor for detecting the displacement of the tab pressing head. It should be noted that the first displacement sensor is installed on the pressing component mounting plate, and the first displacement sensor is located between the cylinder mounting seat and the pressing head slide mounting seat. The sliding distance of the pressing head slide can be obtained through the first displacement sensor, so as to obtain the displacement of the tab pressing head.

[0110] Based on the above embodiments, the tab pressing mechanism further includes a second displacement sensor for detecting the distance between the tab and the bus bar. It should be noted that the second displacement sensor is installed on the pressing component mounting plate, and the second displacement sensor is located between the cylinder mounting seat and the pressing head slide mounting seat. The distance between the tab and the bus bar can be obtained through the second displacement sensor. Combining the displacement of the tab pressing head obtained by the first displacement sensor, the distance between the tab and the bus bar can be calculated, which can prevent the tab pressing head from over-pressing the tab and causing damage to the battery cell module. The tab welding mechanism includes a welding component 151, and the welding component 151 includes a galvanometer welding head, an image acquisition module, a first slide table and a second slide table; the second slide table is installed on the first slide table, the galvanometer welding head is installed on the second slide table, and the moving directions of the first slide table and the second slide table are perpendicular to each other, that is, the first slide table is used to move along the X-axis direction, that is, move left and right, and the second slide table is used to move along the Y-axis direction, that is, move forward and backward; the image acquisition module is installed on the first slide table through a lifting member. Among them, the lifting member can be a fourth slide table, the fourth slide table is installed on the first slide table, and the image acquisition module is installed on the fourth slide table. The fourth slide table drives the image acquisition module to move along the Z-axis direction, that is, move up and down, that is, the image acquisition module moves closer to or farther away from the first slide table. It should be noted that the image acquisition module includes a camera and a light source arranged close to the camera.

[0111] The welding component 151 further includes an air curtain installed on the slide table, and the air curtain is located above the galvanometer welding head. It should be noted that the protective gas blown out by the air curtain makes there no debris on the welding path of the galvanometer welding head, which can improve the working efficiency and welding quality of the galvanometer welding head. Among them, the protective gas can be nitrogen.

[0112] The soft-pack battery module positioning mechanism 153 includes a first module clamping component and a second module clamping component for clamping the soft-pack battery module from different orientations; the first module clamping component is used to clamp the left and right sides of the soft-pack battery module, and the second module clamping component is used to clamp the front and back sides of the soft-pack battery module; the first module clamping component includes a positioning cylinder and a pressing cylinder, the movable end of the positioning cylinder is sequentially connected with a positioning side pressing block and a positioning side cushion block, and the movable end of the pressing cylinder is sequentially connected with a pressing side pressing block and a pressing side cushion block; the second module clamping component includes a jaw cylinder, and symmetrically arranged first jaws and second jaws are provided on both sides of the jaw cylinder. It should be noted that the positioning cylinder is a cylinder with adjustable stroke. One side of the positioning cylinder is used as the positioning side, and one side of the pressing cylinder is used as the pressing side. The positioning cylinder can finely adjust the position of the positioning side cushion block to match the incoming material position; and each time the pressing cylinder works, the pressing side cushion block is at the maximum stroke position. It can be understood that the jaw cylinder is located above the soft-pack battery module. When working, the first jaw and the second jaw move towards each other to clamp the soft-pack battery module. Among them, the first jaw can be used as the pressing side, and the second jaw can be used as the positioning side to match the incoming material position. Among them, both the first jaw and the second jaw are made of insulating materials, and both the first jaw and the second jaw have a certain degree of flexibility.

[0113] In the embodiment of the present invention, by using the first jaw and the pressing side cushion block as the pressing side, and the second jaw and the positioning side cushion block as the positioning side, the position of the soft-pack battery module can be finely adjusted, so as to facilitate the next step of ear welding operation for the soft-pack battery module.

[0114] On the basis of the above embodiment, both the first jaw and the second jaw include an L-shaped connecting plate connected to the movable end of the jaw cylinder, and an inverted U-shaped plate connected to the L-shaped connecting plate. It should be noted that both the L-shaped connecting plate and the inverted U-shaped plate are made of polyurethane.

[0115] In the embodiment of the present invention, when the first jaw and the second jaw clamp the soft-pack battery module, the horizontal part of the L-shaped connecting plate contacts the top surface of the soft-pack battery module, and the inverted U-shaped plate contacts the front and back sides of the soft-pack battery module. Among them, the horizontal part of the L-shaped connecting plate can be used as the reference surface of the top surface of the soft-pack battery module. It can be understood that the positioning cylinder is fixedly installed through a positioning cylinder mounting seat in an L-shaped structure, so that the positioning cylinder works on a horizontal plane; the pressing cylinder is fixedly installed through a pressing cylinder mounting seat in an L-shaped structure, so that the pressing cylinder works on a horizontal plane. Among them, the jaw cylinder is fixedly installed through a gantry.

[0116] A plurality of tab pressing assemblies 152 are arranged corresponding to the welding assembly 151. Among them, two sets of tab pressing assemblies 152 can be installed on the surface of a box body in a rectangular structure. The two sets of tab pressing assemblies 152 are arranged in sequence along the length direction of the box body, and the movement direction of the first slide is consistent with the length direction of the box body. The welding assembly 151 and the tab pressing assemblies 152 are arranged in sequence along the width direction of the box body. At this time, a soft-pack battery module positioning mechanism 153 is correspondingly provided for each tab pressing assembly 152, that is, the soft-pack battery module positioning mechanism 153 is installed on the surface of the box body. The two sets of soft-pack battery module positioning mechanisms 153 are arranged in sequence along the length direction of the box body. The soft-pack battery module positioning mechanism 153, the tab pressing assemblies 152, and the welding assembly 151 are arranged in sequence along the width direction of the box body.

[0117] Install the end cover and weld the end cover.

[0118] As Figure 20 As shown, the end cover assembly device 16 of the embodiment of the present invention includes: a module pressing mechanism and an end cover installation mechanism. The module pressing mechanism includes two second module limiting components 162 arranged symmetrically. Each second module limiting component 162 includes a slidable positioning fixture mounting plate. The two positioning fixture mounting plates can approach or move away from each other, so as to be adapted to soft-pack battery modules of different sizes. A through groove is provided on the positioning fixture mounting plate for the soft-pack battery module to pass through. An upper limiting plate is installed on the upper surface of the through groove, and a lower lifting plate is installed on the lower surface of the through groove. The distance between the upper limiting plate and the lower lifting plate is adjustable. The upper limiting plate is always in a fixed state, and the lower lifting plate can be in a moving state. The upper limiting plate is in contact with the upper surface of the soft-pack battery module, and the lower lifting plate is in contact with the lower surface of the soft-pack battery module. A side clamping plate is installed on the left surface of the through groove, and a side positioning plate is installed on the right surface of the through groove. The distance between the side clamping plate and the side positioning plate is adjustable. Both the side clamping plate and the side positioning plate can be in a moving state. The side clamping plate is in contact with the left side surface of the soft-pack battery module, and the side positioning plate is in contact with the right side surface of the soft-pack battery module.

[0119] In the embodiment of the present invention, it includes two end cover installation components 161 arranged symmetrically. Each end cover installation component 161 includes a first linear driving member and a clamping component. The clamping component includes an end cover positioning seat and a first clamping member installed on the first linear driving member. The end cover positioning seat is flexibly installed on the first clamping member. It should be noted that the first linear driving member can be a slide. The slide is installed on the frame, and the slide is connected to the first clamping member through a cantilever. The first clamping member can be a clamping cylinder. The end cover positioning seat is flexibly installed on the housing of the clamping cylinder, that is, the end cover positioning seat is located between the two clamping fingers of the clamping cylinder. Among them, the extending direction of the cantilever is perpendicular to the moving direction of the slide, and the moving direction of the clamping cylinder is consistent with the moving direction of the slide.

[0120] The end cover assembly device further includes a robot fixture. The robot fixture includes a robotic arm, and a second clamping member is installed on the robotic arm. It should be noted that two symmetrically arranged second clamping members can be installed on the robotic arm. The second clamping member can be a clamping cylinder, and a suction member is installed on the housing of the clamping cylinder, that is, the suction member is located between the two jaws of the clamping cylinder.

[0121] It can be understood that the distance between the two movable ends of the clamping cylinder is less than or equal to the distance between the two bent portions of the end cover. Among them, the maximum distance between the two movable ends of the clamping cylinder is equal to the distance between the two bent portions of the end cover. The end cover assembly device further includes a secondary positioning mechanism. The secondary positioning mechanism includes a limit seat and a third linear driving member. A notch is provided on one side of the limit seat, and the third linear driving member moves in the limit seat through the notch.

[0122] It should be noted that the structure of the limit seat is adapted to the shape of the end cover so that the end cover can be placed inside the limit seat. Among them, the third linear driving member can be a linear cylinder. Through the cooperation of the limit seat and the third linear driving member, that is, the end cover has three positioning references, which can ensure the precise positioning of the end cover.

[0123] Among them, pressure sensors are respectively arranged for the two clamping cylinders to detect the magnitude of the force exerted by the clamping cylinders on the end cover to prevent damage to the end cover.

[0124] On the basis of the above embodiments, the end cover assembly device further includes a feeding box. It should be noted that the feeding box is used to place the end cover and complete the primary positioning of the end cover; the robot fixture takes out the end cover in the feeding box and places it on the secondary positioning mechanism to complete the secondary positioning; finally, the robot fixture takes out the end cover on the secondary positioning mechanism again and places it on the end cover positioning seat to complete the feeding of the end cover.

[0125] Module off-line.

Claims

1. A soft-pack battery production system, characterized in that, Including: An aluminum-plastic film bending mechanism, which includes an aluminum-plastic film first folding assembly, an aluminum-plastic film second folding assembly, and an aluminum-plastic film third folding assembly; The aluminum-plastic film first folding assembly includes a first upper die, a first lower die, a first folding knife, and a first heating block; the first upper die and the first lower die are used to clamp the aluminum-plastic film; a first inclined surface is constructed on the first lower die, and a second inclined surface adapted to the first inclined surface is constructed on the first heating block, and the second inclined surface moves towards the first inclined surface; the first folding knife that can move up and down in a straight line reciprocating motion is used to bend the aluminum-plastic film so that the aluminum-plastic film moves towards the first inclined surface; The aluminum-plastic film second folding assembly includes a second upper die, a second lower die, and a second heating block; the distance between the second upper die and the second lower die is adjustable, and the second heating block for placing the aluminum-plastic film is in a separable contact with both the bottom surface of the second upper die and the top surface of the second lower die; The aluminum-plastic film third folding assembly includes a third upper die, a third lower die, a second folding knife, and a third heating block; the third upper die and the third lower die are used to clamp the aluminum-plastic film; the second folding knife that can move up and down in a straight line reciprocating motion is used to bend the aluminum-plastic film so that the aluminum-plastic film contacts the end face of the third lower die, and the third heating block moves towards the end face of the third lower die; It further includes a battery core gluing mechanism, which includes a tape end fixing jaw, a glue pulling jaw, a cutting knife, and a gluing assembly; The gluing assembly includes a first linear driving member, a substrate, a first gluing head, a second gluing head, and a stopper; the first gluing head and the second gluing head are installed on the substrate, and the distance between the two is adjustable; The stopper installed on the substrate is located between the first gluing head and the second gluing head; the free end of the first linear driving member is connected to the substrate.

2. The soft-pack battery production system according to claim 1, wherein The soft-pack battery production system further includes an ear cutting mechanism, which includes: two symmetrically arranged ear cutting assemblies, and two vision detection assemblies for taking pictures of the ears on both sides of the battery core; the ear cutting assembly includes a frame that slides in the horizontal direction, and a lower pre-pressing pad mounting plate and a cutting assembly mounting plate that slide in the vertical direction are installed on the frame; an upper pre-pressing block and a cutting knife are installed on the cutting assembly mounting plate, and a lower pre-pressing pad arranged opposite to the upper pre-pressing block is installed on the lower pre-pressing pad mounting plate.

3. The soft-pack battery production system according to claim 1, characterized in that, The soft-pack battery production system further includes a battery core gluing device, which includes a flipping mechanism, and the flipping mechanism includes a first driving member, a first suction cup group, a second driving member, a third driving member, a rotating member, and a second suction cup group; The free end of the first driving member is connected to the first suction cup group, the free end of the second driving member is connected to the fixed end of the third driving member, the free end of the third driving member is connected to the fixed end of the rotating member, and the free end of the rotating member is connected to the second suction cup group.

4. The soft-pack battery production system according to claim 1, characterized in that, The soft-pack battery production system further includes a battery core stacking device, which includes a stacking tooling, and the stacking tooling includes two battery core pressing components. The battery core pressing component includes a base, a U-shaped mounting plate, and a roller. The roller is rotatably installed in the area enclosed by the U-shaped mounting plate. The U-shaped mounting plate is slidably installed on the base, and the working length of the roller is adapted to the width of the battery core.

5. The soft-pack battery production system according to claim 1, characterized in that, The soft-pack battery production system further includes a top and bottom plate welding device, which includes a welding robot and two top and bottom plate welding and pressing assemblies, and each top and bottom plate welding and pressing assembly is correspondingly connected to a top and bottom plate assembly component; The top and bottom plate assembly component includes an X-direction adjustment plate, a Y-direction adjustment plate, a positioning plate, and a bottom plate; the X-direction adjustment plate is slidably installed on the side surface of the bottom plate, the Y-direction adjustment plate is slidably installed on the side surface of the X-direction adjustment plate, and the sliding directions of the X-direction adjustment plate and the Y-direction adjustment plate intersect; the positioning plate is installed at the edge of the Y-direction adjustment plate, a top and bottom plate incoming material positioning pin is installed on the Y-direction adjustment plate, and a top and bottom plate installation positioning pin is installed on the positioning plate; the top and bottom plate welding and pressing assembly includes a linear drive member, and the movable end of the linear drive member is connected to the side surface of the bottom plate.

6. The soft-pack battery production system according to claim 1, wherein The soft-pack battery production system further includes a current collector plate assembly device, which includes a first module pressing mechanism and a current collector plate installation mechanism; The first module pressing mechanism includes two module limiting components, and each module limiting component includes a slidable positioning fixture mounting plate. A through groove is formed in the positioning fixture mounting plate, an upper limiting plate is installed on the upper surface of the through groove, a lower lifting plate is installed on the lower surface of the through groove, and the distance between the upper limiting plate and the lower lifting plate is adjustable; a side clamping plate is installed on the left surface of the through groove, a side positioning plate is installed on the right surface of the through groove, and the distance between the side clamping plate and the side positioning plate is adjustable; The current collector plate installation mechanism includes a linear driver and a clamping component. The clamping component includes a current collector plate positioning seat and a clamping member installed on the linear driver, and the current collector plate positioning seat is fixed on the clamping member.

7. The soft-pack battery production system according to claim 1, characterized in that, The soft-pack battery production system further includes an ear welding device, which includes a soft-pack battery module positioning mechanism for positioning the soft-pack battery module, an ear pressing mechanism for making the ears and the current collector plate fit together, and an ear welding mechanism for welding the ears and the current collector plate; The ear pressing mechanism includes an ear pressing assembly, which includes a slidable pressing assembly mounting plate, two symmetrically arranged telescopic cylinders, two symmetrically arranged ear pressing heads, and two symmetrically arranged pressing head sliders; The fixed ends of the two telescopic cylinders are both hinged to the pressing assembly mounting plate, the movable end of one telescopic cylinder is hinged to one pressing head slider, and the movable end of the other telescopic cylinder is hinged to the other pressing head slider; the two pressing head sliders are both slidably installed on the pressing assembly mounting plate, and the sliding direction of the pressing head slider is perpendicular to the pressing assembly mounting plate; one ear pressing head is installed on one pressing head slider, and the other ear pressing head is installed on the other pressing head slider; The ear welding mechanism includes a welding component, which includes a galvanometer welding head, an image acquisition module, a first slide table, and a second slide table; The second slide table is installed on the first slide table, the galvanometer welding head is installed on the second slide table, and the movement directions of the first slide table and the second slide table are perpendicular to each other; the image acquisition module is installed on the first slide table through a lifting member.

8. The soft-pack battery production system according to claim 1, characterized in that, The soft-pack battery production system further includes an end cover assembly device, which includes an end cover installation mechanism and a second module pressing mechanism for lifting the height of the module and limiting the module; The end cap mounting mechanism includes two end cap mounting components. Each end cap mounting component includes a linear drive body and a clamping body. The clamping body includes an end cap positioning seat and a clamp mounted on the linear drive body. The end cap positioning seat is flexibly mounted on the clamp.

9. A production method for soft-pack batteries applied to the soft-pack battery production system according to any one of claims 1 to 8, characterized in that, Including: Cell feeding and testing; Three - fold hemming of the aluminum plastic film of the cell; Gluing on the side of the cell; Tab cutting; Cell stacking; among which, before stacking, it is necessary to apply glue to the front and back sides of the cell, the insulating board, the left side plate, the right side plate, and the foam. Install the top plate and the bottom plate, and weld the top plate and the bottom plate; Install the current collector plate; Bend the tabs and perform tab welding; Install the end cap and weld the end cap; The module is taken off the production line.

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