CN117133991B - Square shell battery stacking system and method - Google Patents
Square shell battery stacking system and method Download PDFInfo
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- CN117133991B CN117133991B CN202311395077.9A CN202311395077A CN117133991B CN 117133991 B CN117133991 B CN 117133991B CN 202311395077 A CN202311395077 A CN 202311395077A CN 117133991 B CN117133991 B CN 117133991B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 115
- 238000001816 cooling Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 230000000712 assembly Effects 0.000 claims abstract description 18
- 238000000429 assembly Methods 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims description 32
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a square shell battery stacking system which comprises a stacking table for supporting a battery cell unit, a feeding mechanism, clamping mechanisms symmetrically arranged on two sides of the stacking table, a centering mechanism and a pressurizing mechanism, wherein the clamping mechanisms comprise two groups of clamping assemblies positioned on the same side of the stacking table, and the two groups of clamping assemblies can respectively reciprocate along a Y axis so as to respectively clamp two adjacent groups of liquid cooling pipes. In addition, the invention also provides a stacking method for stacking the battery cells by using the square shell battery stacking system, wherein the stacking process of the batteries is respectively a pre-stacking process and a total stacking process, so that the working time can be greatly saved, and the stacking difficulty is reduced. The square shell battery stacking system provided by the invention has stronger circulation capacity, and can convert the complex stacking process of the square shell battery into a simple scheme.
Description
Technical Field
The present invention relates to a lithium battery stacking apparatus, and more particularly, to a square-case battery stacking system and a square-case battery stacking method.
Background
The square shell battery module is formed by assembling a plurality of electric cores, and the electric cores are combined to enable the square shell battery module to have larger capacity. Fig. 1 is a schematic structural view of a battery cell unit constituting a square-case battery. The battery core unit is a cross bar structure formed by assembling a plurality of battery cores in parallel, and one end face of the battery cores is provided with the same water cooling plate. And arranging the plurality of battery core units longitudinally and pressing the battery core units, so that the water cooling plate covers the other end face of the battery core, and thus a square shell battery module is formed.
The chinese patent publication No. CN114583374B discloses a stacked pressing device for battery modules, which is provided with a module stacking mechanism, a liquid cooling plate positioning mechanism, a battery module positioning mechanism and a cooling tube alignment positioning mechanism. The working process is approximately as follows: the liquid cooling plate positioning mechanism fixes the position of the liquid cooling plate, the battery module positioning mechanism fixes the position of the battery module, the cooling pipe calibration positioning mechanism calibrates the height position of the cooling pipe, and the battery module is stacked through repeated cycles of calibrating the liquid cooling plate, calibrating the battery module and compressing.
It can be seen that the stacking of the battery modules has extremely high requirements on the positioning accuracy of the cooling tube in the battery cell unit, and in the scheme disclosed in the patent, the dimensions of the liquid cooling plate positioning mechanism and the battery module positioning mechanism must be strictly designed according to products, and when the model of the products changes, the whole positioning mechanism needs to be replaced and the new positioning mechanism needs to be accurately adjusted. In the technical field of lithium battery production, the modification of the battery cell model is a common phenomenon, so that it is necessary to provide a stacking device with strong compatibility.
In addition, the battery units forming the battery module are all stacked row by row at one station, and the equipment for carrying out the whole stacking process has long circulation beat, great difficulty and influences the working efficiency of the battery cell stacking.
Disclosure of Invention
In order to solve the technical problems, the invention provides a square-shell battery stacking system, which comprises a stacking table for supporting battery cells, a feeding mechanism for conveying each group of battery cells to the stacking table, clamping mechanisms symmetrically arranged at two sides of the stacking table, a centering mechanism for centering the positions of the battery cells on the stacking table, and a pressurizing mechanism for applying a stacking direction pressing force to the battery cells on the stacking table, wherein the clamping mechanisms are arranged on the two sides of the stacking table;
setting the side direction of a stacking table as an X axis and the stacking direction of the battery cell units on the stacking table as a Y axis;
the clamping mechanism comprises two groups of clamping assemblies positioned on the same side of the stacking table, and the two groups of clamping assemblies can respectively reciprocate along the Y axis so as to respectively clamp two adjacent groups of liquid cooling pipes;
the centering mechanism comprises balance cylinders arranged at two sides of the stacking table, and balance pressing plates for outputting pushing force to two sides of the battery cell unit are arranged at the output ends of the balance cylinders;
the pressing mechanism comprises a pressing plate located on the central line of the stacking table, and the pressing plate can reciprocate along the Y axis to press the battery cell in the Y axis direction.
Further, the clamping mechanism comprises a triaxial servo mechanism for driving the clamping mechanism to move, wherein the triaxial servo mechanism comprises a frame, a lifting linear module vertically arranged on the frame, a compatible linear module moving along an X axis and a Y axis and a clamping jaw linear module;
the output end of the lifting linear module is connected with a supporting beam, the compatible linear modules are symmetrically arranged on two sides of the supporting beam, and the clamping jaw linear module is connected with the compatible linear module through a Y-direction supporting plate;
two groups of clamping components on the same side are respectively connected to one group of clamping jaw linear modules through clamping jaw connecting plates.
Further, the clamping assembly comprises a pair of clamping jaws, and positioning grooves matched with the liquid cooling pipes are formed in the end parts of the clamping jaws;
the clamping assembly further comprises an insertion cylinder for driving the clamping jaw to move along the X axis and a clamping cylinder for driving the pair of clamping jaws to move relatively or reversely along the Y direction.
Further, the balance cylinder is connected with the Y-direction supporting plate through the centering linear module so as to drive the balance cylinder to move along the Y axis;
the output ends of the two groups of centering linear modules are connected through the balance beam so as to realize synchronous movement of the two groups of balance cylinders.
Further, the pressurizing plate is arranged on the balance beam, and the transmission of the Y axis is controlled by the centering linear module.
Further, the balance beam is fixedly provided with a bearing plate, the bearing plate is movably connected to the bearing plate, and a pressure sensor is arranged on the bearing plate so as to monitor the pressing force between the bearing plate and the bearing plate in real time.
Further, the pressurizing plate consists of a fixed plate positioned in the middle and first movable plates positioned at two sides, and the fixed plate is movably connected with the first movable plates; the first movable plate is provided with a second follow-up piece which drives the first movable plate to move relative to the fixed plate.
Further, the two groups of stacking tables are respectively connected to a group of switching linear modules arranged along the Y axis, and switching of the two groups of stacking tables is completed through the switching linear modules.
The invention also provides a square shell battery stacking method, which utilizes the square shell battery stacking system to stack the battery core units, and comprises the steps of placing the battery core units on a stacking table by utilizing a feeding mechanism, centering the battery core units on the stacking table row by utilizing a centering mechanism, clamping liquid cooling pipes on two sides of the battery core units by utilizing a clamping assembly so as to realize the pre-insertion of two adjacent groups of liquid cooling pipes, and utilizing a pressurizing mechanism to enable the battery core units on the stacking table to form a whole after the liquid cooling pipes are pre-inserted.
Further, the square-case battery stacking method comprises a pre-stacking process of stacking battery cell combinations comprising a plurality of groups of battery cells, and a total stacking process of stacking the pre-stacked battery cell combinations into a battery module.
The invention provides a square shell battery stacking system which comprises a stacking table for supporting a battery cell unit, a feeding mechanism, clamping mechanisms symmetrically arranged on two sides of the stacking table, a centering mechanism and a pressurizing mechanism, wherein the clamping mechanisms comprise two groups of clamping assemblies positioned on the same side of the stacking table, and the two groups of clamping assemblies can respectively reciprocate along a Y axis so as to respectively clamp two adjacent groups of liquid cooling pipes.
The invention uses the centering mechanism to perform row-by-row centering on the battery cell units on the stacking table, uses the clamping component to realize the pre-insertion of two adjacent groups of liquid-cooled tubes, and uses the pre-inserted battery cell units of the pressurizing mechanism to form a whole. Because the cell units are pre-inserted by the clamping assembly, the pressing mechanism can easily press the adjacent two groups of cell units. The square shell battery stacking system provided by the invention has stronger circulation capacity, and can convert the complex stacking process of the square shell battery into a simple scheme.
The embodiment provides a triaxial servo mechanism for driving a clamping mechanism, a centering mechanism and a pressurizing mechanism to move, and the servo movement of the functional mechanism is realized through a rack, and the triaxial servo mechanism comprises a lifting linear module arranged vertically, a compatible linear module arranged along an X axis, a clamping jaw linear module arranged along a Y axis and a centering linear module. The invention has high use efficiency and high product servo positioning precision, can continuously replicate operation, realizes the accurate assembly requirement of products and improves the production yield. The invention can carry out servo adjustment aiming at different cell specifications and liquid cooling plate specifications, and has quite large compatibility and working efficiency.
In addition, the invention also provides a stacking method for stacking the battery cells by using the square shell battery stacking system, wherein the stacking process of the batteries is respectively a pre-stacking process and a total stacking process, so that the working time can be greatly saved, and the stacking difficulty is reduced.
Drawings
Fig. 1 is a schematic view of a combination of a battery cell and a battery cell;
fig. 2 is a schematic structural view of a square-case battery stacking system according to the present invention;
FIG. 3 is a schematic diagram of a three-axis servo mechanism;
FIG. 4 is a rear view of a three-axis servo;
FIG. 5 is a schematic diagram of the connection of the clamping mechanism, centering mechanism, pressurizing mechanism and triaxial servo;
FIG. 6 is a schematic diagram of the connection of the centering mechanism to the clamping assembly on the Y-direction support plate;
FIG. 7 is a schematic view of a clamping assembly;
FIG. 8 is a schematic diagram of the connection of the centering mechanism and the pressing mechanism on the support beam;
FIG. 9 is a schematic view of the structure of the pressurizing mechanism;
FIG. 10 is a schematic structural view of a feeding mechanism;
FIG. 11 is one of the schematic views of the locking structure on the loading mechanism;
FIG. 12 is a second schematic view of a locking mechanism on the feeding mechanism;
FIG. 13 is a schematic diagram of a switch between two sets of stacking stations;
fig. 14 is a schematic view of the structure of the end shield.
Reference numerals:
the stacking table 1, the end baffle 11, the switching linear module 12, the tail stop lever 13, the anti-falling linear module 14, the second movable plate 15, the third follower 16 and the avoidance cylinder 17;
clamping mechanism 2, clamping assembly 21, clamping jaw 211, positioning slot 212, insertion cylinder 213, clamping cylinder 214;
the centering mechanism 3, the balance cylinder 31, the balance pressing plate 32 and the balance beam 33;
the pressurizing mechanism 4, the pressurizing plate 41, the pressure bearing plate 42, the guide post 43, the pressure sensor 44, the fixed plate 411, the first movable plate 412, the second follower 413;
the three-axis servo mechanism 5, the frame 51, the compatible linear module 52, the X-direction linear motor 521, the Y-direction supporting plate 522, the clamping jaw linear module 53, the Y-direction linear motor 531, the clamping jaw connecting plate 532, the lifting linear module 54, the lifting sliding table 541, the supporting beam 542, the sliding table motor 543, the centering linear module 55 and the cylinder connecting plate 551;
the feeding mechanism 6, the six-axis robot 61, the clamp supporting plate 62, the clamp 63, the clamping support 64, the locking piece 65, the first follower 66, the push-pull cylinder 67, the lock catch linear module 68, the pneumatic finger 69, the lock catch sliding rail 610 and the guide rail clamp 611;
battery cell assembly 7, battery cell 71, liquid cooling plate 711, and liquid cooling tube 712.
Detailed Description
The square-case battery stacking system as shown in fig. 2 and 3 comprises a stacking table 1 for supporting the battery cells 71, a feeding mechanism 6 for conveying each group of battery cells 71 to the stacking table 1, clamping mechanisms 2 symmetrically arranged on two sides of the stacking table 1, a centering mechanism 3 for centering the positions of the battery cells 71 on the stacking table 1, and a pressing mechanism 4 for pressing the battery cells 71 on the stacking table 1 along the stacking direction.
The invention aims to arrange and stack a plurality of groups of battery cells 71 on a stacking table 1 row by row into a whole, and the adjacent battery cells 71 share a liquid cooling plate 711. The stacking direction of each cell in a single cell unit 71 is set as the X axis, the stacking direction of a plurality of cell units 71 is set as the Y axis, the clamping mechanism 2 comprises two groups of clamping assemblies 21-1 and 21-2 positioned on the same side of the stacking table 1, the liquid cooling plates 711 of the two groups of cell units 71 in the Y axis direction are respectively clamped, and the two groups of clamping assemblies 21 can respectively and independently reciprocate along the Y axis, so that the adjacent two groups of liquid cooling tubes 712 are aligned and pre-inserted.
The feeding mechanism 6 places the cell units 71 on the stacking table 1, and the positions of the individual cell units 71 may be offset due to vibration of the external environment, which is not beneficial to the subsequent insertion of the liquid cooling tube 712, so that the positions of the cell units 71 on the stacking table 1 need to be positioned. The centering mechanism 3 is used for positioning the position of the battery cell unit 71 before the clamping mechanism 2 works, and comprises balance cylinders 31 respectively arranged at two sides of the stacking table 1, and the output end of each balance cylinder 31 is provided with a balance pressing plate 32 for outputting pushing force to two sides of the battery cell unit 71. The working principle of the balancing cylinder 31 is the prior art, and the pressure of the output end of the balancing cylinder 31 can be monitored and the output stroke of the cylinder can be adjusted.
The pressurizing mechanism 4 outputs a pushing force to the pre-inserted battery cell units 71, and the pushing mechanism comprises a pressurizing plate 41 positioned on the central line of the stacking table 1, wherein the pressurizing plate 41 can reciprocate along the Y axis to push the end faces of the liquid cooling plates 711, so that a plurality of groups of battery cell units 71 are stacked into a complete whole. Since the liquid cooling tube 712 of the cell unit 71 is already aligned and pre-inserted by the clamping mechanism 2, no additional positioning is required during compacting, and the compacting of the product can be conveniently and rapidly completed.
The stacking system provided by the invention has the following processes that the feeding mechanism 6 is used for placing the battery cell units 71 on the stacking table 1, the centering mechanism 3 is used for centering the battery cell units 71 on the stacking table 1 row by row, the clamping assemblies 21 are used for clamping the liquid cooling pipes 712 at two sides of the battery cell units 71 so as to realize the pre-insertion of two adjacent groups of liquid cooling pipes 712, and the pressurizing mechanism 4 is used for enabling the battery cell units 71 on the stacking table 1 to form a whole after the liquid cooling pipes 712 are pre-inserted.
In addition, since the square-case battery module is formed by stacking tens or tens of groups of the battery cells 71, the stacking of all the battery cells 71 in the prior art is performed at the same station, resulting in long stacking beats and low stacking efficiency. In order to further improve the stacking efficiency of the present stacking system, the present embodiment divides the stacking process of the square-case cells into two processes of pre-stacking and total stacking. As shown in fig. 1, the pre-stacking process refers to that the stacking system is utilized to stack a battery unit combination 7 including a plurality of groups of battery cells 71, and the battery unit combination is formed by feeding, centering, pre-inserting and compacting a plurality of battery cells 71 placed on a stacking table 1; the total stacking process refers to stacking a plurality of pre-stacked battery cell combinations 7 into a complete square-case battery module. The stacking process of the battery with the square shell is divided by adopting the method of pre-stacking and total stacking, so that the beats of stacking the battery cells can be greatly saved, the stacking difficulty is reduced, and the number of the pre-stacking and total stacking can be randomly adjusted by staff according to the requirements.
As shown in fig. 3 to 5, the movement of the clamping mechanism 2 in the triaxial space in the present embodiment relies on a triaxial servo mechanism 5, and the triaxial servo mechanism 5 includes a frame 51, a lifting linear module 54 vertically disposed on the frame 51, a compatible linear module 52 moving along the X-axis and the Y-axis perpendicular to the frame, and a clamping jaw linear module 53; the lifting linear module 54 comprises a supporting beam 542 capable of lifting vertically, and the compatible linear module 52 and the clamping jaw linear module 53 are connected to the supporting beam 542; the two sets of clamping assemblies 21-1 and 21-2 on the same side are each connected to a set of jaw linear modules 53-1 and 53-2 to effect relative movement of the two sets of clamping assemblies 21-1 and 21-2.
The triaxial servo mechanism 5 can servo-control the clamping assembly 21 to move to a working position, wherein the lifting linear module 54 controls the clamping assembly 21 to descend to a working height of the battery cell unit 71; the compatible linear module 52 controls the relative movement of the clamping mechanisms 2 at two sides, and performs servo adjustment for the lengths of different battery cell units 71; the clamping jaw linear module 53 controls the clamping assembly 21 to move along the stacking direction of the cell units 71, servo-adjusts the clamping assembly 21 according to the positions of the cell units 71, and servo-moves to the stacking position after clamping the cell units 71.
The lifting linear module 54 in this embodiment is a lifting sliding table 541 arranged vertically; the supporting beam 542 is connected to the output end of the lifting sliding table 541, and the lifting sliding table 541 is driven by the sliding table motor 543 in a servo manner to drive the supporting beam 542 and the clamping mechanism 2 on the supporting beam 542 to vertically move along the Z axis. The compatible linear module 52 is an X-direction linear motor 521 symmetrically disposed on both sides of the support beam 542 and extending along the support beam 542, and a Y-direction support plate 522 is slidably mounted on the X-direction linear motor 521. The clamping jaw linear module 53 is a Y-direction linear motor 531 disposed on the Y-direction support plate 522, and the clamping assembly 21 is slidably connected to the Y-direction linear motor 531 through a clamping jaw connecting plate 532.
The cell unit 71 is placed on the stacking table 1, and the clamping mechanism 2 can fix the position of the liquid cooling plate 711 from both sides of the stacking table 1, and the position of the clamping mechanism 2 is adjusted by the triaxial servo mechanism 5. The two clamping assemblies 21-1 and 21-2 of the clamping mechanism 2 respectively clamp and move the stacked battery cell units 71 and the battery cell units 71 to be stacked, and the two clamping assemblies 21-1 and 21-2 respectively move to the linear motor 531 through a group of Y-direction, so that the two battery cell units 71 can move independently, and the stacking of the two battery cell units is realized.
As shown in fig. 6 and 7, the clamping assembly 21 includes a pair of clamping jaws 211, and positioning slots 212 matched with the liquid cooling tubes 712 are provided at the ends of the clamping jaws 211, so as to fix the battery cell 71 by fixing the positions of the liquid cooling tubes 712 at two sides. The pair of clamping jaws 211 are respectively used for clamping two ends of the liquid cooling pipe 712, and the pair of clamping jaws 211 are used for realizing the compression fixation of the liquid cooling pipe 712, so that the clamping assembly 21 further comprises an insertion cylinder 213 for driving the clamping jaws 211 to move along the X axis and a clamping cylinder 214 for driving the pair of clamping jaws 211 to move oppositely or reversely along the Y direction. The insertion cylinder 213 drives the clamping jaw 211 to move on the side of the cell unit 71, so that the liquid cooling pipe 712 on the side of the liquid cooling plate 711 extends into the positioning groove 212, and the clamping cylinder 214 drives the pair of clamping jaws 211 to relatively move to clamp the liquid cooling pipe 712 in the Y direction. The insertion cylinder 213 and the clamping cylinder 214 can complete positioning and fixing of the liquid cooling tube 712, and then the position of the battery cell unit 71 is adjusted by the compatible linear module 52 and the clamping jaw linear module 53.
The balance cylinder 31 is connected with the Y-direction support plate 522 through the centering linear module 55, and drives the balance cylinder 31 to move in a servo manner along the Y-direction support plate 522. The centering linear module 55 and the jaw linear module 53 each independently move to achieve line-by-line centering of each group of the battery cells 71 by the balancing cylinder 31. After the compatibility of different battery cell products is finished by using the compatible linear module 52, the positioning of each group of battery cell units 71 is finished by using the centering linear module 55, the centering linear module 55 pushes two sides of the battery cell units 71 by using the balance pressing plate 32, and the output strokes of the two groups of balance cylinders 31 are adjusted according to different pressure feedback of the balance pressing plate 32, so that the output strokes of the two groups of balance cylinders 31 reach balance finally, and the centering adjustment of the battery cell units 71 is realized.
Further, the output ends of the two sets of centering linear modules 55 are connected through the balance beam 33, and the two sets of balance cylinders 31 are respectively connected with the balance beam 33 in a sliding manner through the cylinder connecting plates 551, so as to realize synchronous movement of the two sets of balance cylinders 31.
As shown in fig. 8 and 9, in the present embodiment, the pressing plate 41 is provided on the balance beam 33, and the transmission in the Y axis is synchronized with the balance cylinder 31 by the centering linear module 55. Specifically, the balance beam 33 is fixedly provided with a bearing plate 42, two sides of the bearing plate 42 are provided with guide posts 43, and two sides of the pressing plate 41 are movably connected to the guide posts 43. When the pressing plate 41 contacts the cell unit 71, the pressing plate 41 continuously applies a pressing force to the liquid cooling plate 711, and the pressing plate 41 moves to the side of the pressure receiving plate 42 due to the reaction force of the cell assembly. The pressure-bearing plate 42 is provided with a pressure sensor 44 for monitoring the pressing force between the pressing plate 41 and the pressure-bearing plate 42 in real time.
As shown in fig. 1 and 10, the feeding mechanism 6 of the present embodiment adopts a six-axis robot structure, and the feeding mechanism 6 includes a fixture support plate 62 disposed at an output end of the six-axis robot 61, and a plurality of fixtures 63 arranged along a length direction of the fixture support plate 62. The clamp 63 is used to clamp the cell unit 71 to be pressurized, and to transfer the cell unit 71 onto the stacking table 1 by the six-axis robot 61.
In order to enhance the compatibility of the clamping mechanism 2 with the battery cell unit 71, the clamp 63 is movably connected with the clamp support plate 62 through the clamp support 64, and a locking structure for driving the clamp support 64 to move is provided, wherein the locking structure comprises a locking piece 65 capable of moving reciprocally along the length direction of the clamp support plate 62 and a first follower 66 arranged on the clamp support 64. The locking piece 65 is matched with the first follower 66, when the locking structure is in a locking state, the clamping support 64 and the locking piece 65 form a unified whole, and the locking piece 65 drives the clamping support 64 to move along the length direction of the clamp supporting plate 62; when the locking structure is in the unlocked state, the clamp mount 64 stops moving, thereby functioning as a servo for adjusting the position of each clamp 63.
As shown in fig. 11 and 12, the first follower 66 is fixedly disposed on the clamping support 64, and the end of the locking member 65 has a clamping groove matched with the end surface of the first follower 66; the rear end of the locking member 65 is provided with a push-pull cylinder 67 and is connected to a piston shaft of the push-pull cylinder 67. The push-pull cylinder 67 drives the locking member 65 to move so that the first follower 66 extends into or out of the clamping groove. When the first follower 66 enters the clamping groove, the first follower 66 abuts against the clamping groove, and the locking structure is in a locking state.
The clamp support plate 62 is provided with a locking linear module 68 for driving the locking member 65 to move along the length direction, in this embodiment, the locking linear module 68 is a linear motor, and the push-pull cylinder 67 is mounted on a slider of the linear motor, so that the locking member 65 can move along the linear motor.
The clamp support plate 62 is further provided with a locking slide rail 610 for guiding the moving position of the clamping support 64, and the clamping support 64 is connected to the locking slide rail 610 through a guide rail clamp 611. When the locking mechanism is in the unlocked state, the rail clamp 611 is able to secure the clamp mount 64 to the latch slide 610 such that the clamp mount 64 no longer moves with the locking member 65.
In this embodiment, the clamp 63 includes two sets of feeding fingers and a driving element for driving the two sets of feeding fingers to move relatively, so as to clamp the battery cell unit 71. In this embodiment, the driving member of the clamp 63 is a pneumatic finger 69, and the output end of the pneumatic finger 69 controls the feeding clamp to move. Further, two sets of clamps 63, a first clamp 63-1 and a second clamp 63-2, are provided on the clamping support 64 to switch the required clamps for different material clamping requirements. Wherein the two output ends of the first clamp 63-1 are positioned on the same side of the pneumatic finger 69, and are suitable for clamping small-sized products; the two output ends of the second clamp 63-2 are located on either side of the pneumatic finger 69 and are adapted for clamping large-sized products.
Further, the pressing plate 41 is composed of a fixed plate 411 located in the middle and a first movable plate 412 located at both sides, and the fixed plate 411 and the first movable plate 412 are movably connected. The end surfaces of the fixed plate 411 and the first movable plate 412 together form a pressurizing surface for the liquid cooling plate 711, and the fixed plate 411 and the first movable plate 412 are movably connected to adjust the length of the pressurizing surface according to different product specifications. As shown in fig. 9, the first movable plate 412 is provided with a second follower 413, and compatible adjustment of the first movable plate 412 is completed by cooperation of the locking member 65 on the feeding mechanism 6 and the second follower 413.
As shown in fig. 13, in order to further enhance the working cycle of the system, the present embodiment is provided with two groups of stacking tables 1-1 and 1-2, wherein the two groups of stacking tables 1 are respectively connected to a group of switching linear modules 12 arranged along the Y axis, and the stacking tables 1 are reciprocally moved from a loading position and a unloading position by the driving of the switching linear modules 12. The two stacking tables 1 do not interfere with each other, and the unloading work is finished while feeding, so that the circulation capacity of the whole system is enhanced.
Further, the stacking table 1 is further provided with an anti-falling mechanism, the anti-falling mechanism comprises end baffles 11 and a tail stop lever 13 which are respectively positioned at two ends of the stacking table 1, and the end baffles 11 are used for fixing the end positions of the battery cell units 71 in the pressurizing process, so that the pressurizing process is convenient; the tail stop lever 13 can reciprocate along the Y axis to press the pressurized battery unit combination 7, and is matched with the end baffle 11 to prevent the battery unit combination 7 from toppling over. Specifically, the two sides of the stacking table 1 are provided with anti-falling straight line modules 14 extending along the Y axis, and two ends of the tail stop lever 13 are connected with the anti-falling straight line modules 14.
Further, as shown in fig. 14, two sides of the end baffle 11 are formed by two sets of second movable plates 15 disposed opposite to each other, and the two sets of second movable plates 15 are movably connected to each other. Similar to the structure of the pressing plate 41, the second movable plate 15 can adjust the supporting surface of the end baffle 11 according to different specifications of the cell unit 71; the second movable plate 15 is provided with a third follower 16, and compatible adjustment of the second movable plate 15 is completed through cooperation of the locking member 65 on the feeding mechanism 6 and the second follower 413.
Further, a avoidance cylinder 17 is fixedly arranged on the stacking table 1, and an output shaft of the avoidance cylinder 17 is connected with the end baffle 11. The function of the avoidance cylinder 17 is to adjust the position of the end baffle 11 relative to the stacking table 1, and avoid the cell unit 71 when the feeding mechanism 6 feeds materials.
The present embodiment can realize centering, positioning and compacting of the cell unit 71, and the working process is approximately as follows: the six-axis robot 61 of the feeding mechanism 6 is utilized to place the cell units 71 to be assembled on the stacking table 1, and the compatible linear module 52 performs servo compatibility in the X-axis direction for the centering mechanism 3, the clamping mechanism 2 and the pressurizing mechanism 4 of different cell models; the centering mechanism 3 is started, and the cell units 71 in each group are centered row by row through pressure feedback of the two groups of balance cylinders 31; after centering, the clamping jaw linear modules 53-1 on two sides respectively drive one group of clamping assemblies 21-1 to clamp and fix the assembled liquid cooling pipes 712, the other group of clamping assemblies 21-2 clamp the liquid cooling pipes 712 to be assembled and move along the clamping jaw linear modules 53-2, so that the two groups of liquid cooling pipes 712 are preassembled, and finally the pressurizing mechanism 4 is started to apply pressure to the cell unit 71; since the liquid cooling tube 712 is completely preloaded, the pressurizing mechanism 4 can easily stack the two battery cells 71. The processes of feeding, centering, clamping and compacting are cycled a plurality of times to complete the stacking of all the battery cells 71.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A square battery stacking system, characterized in that: the device comprises a stacking table (1) for supporting the battery cells (71), a feeding mechanism (6) for conveying each group of battery cells (71) to the stacking table (1), clamping mechanisms (2) symmetrically arranged on two sides of the stacking table (1), a centering mechanism (3) for centering the positions of the battery cells (71) on the stacking table (1), and a pressurizing mechanism (4) for applying a stacking direction pressing force to the battery cells (71) on the stacking table (1);
setting the side direction of the stacking table (1) as an X axis and the stacking direction of the battery cell units (71) on the stacking table (1) as a Y axis;
the clamping mechanism (2) comprises two groups of clamping assemblies (21) positioned on the same side of the stacking table (1), the two groups of clamping assemblies (21) on the same side are respectively connected to a group of clamping jaw linear modules (53) arranged along the Y axis through clamping jaw connecting plates (532), and the two groups of clamping assemblies (21) respectively reciprocate along the Y axis to respectively clamp two adjacent groups of liquid cooling pipes (712);
the centering mechanism (3) comprises balance cylinders (31) arranged at two sides of the stacking table (1), and balance pressing plates (32) for outputting pushing force to two sides of the battery cell unit (71) are arranged at the output ends of the balance cylinders (31);
the pressurizing mechanism (4) comprises a pressurizing plate (41) positioned on the central line of the stacking table (1), and the pressurizing plate (41) is connected to a centering linear module (55) arranged along the Y axis, so that the pressurizing plate (41) can reciprocate along the Y axis to press the cell unit (71) in the Y axis direction.
2. A square-case battery stacking system as defined in claim 1, wherein: the device also comprises a triaxial servo mechanism (5) for driving the clamping mechanism (2) to move, wherein the triaxial servo mechanism (5) comprises a frame (51), a lifting linear module (54) vertically arranged on the frame (51) and a compatible linear module (52) arranged along an X axis;
the output end of the lifting linear module (54) is connected with a supporting beam (542), the compatible linear module (52) is symmetrically arranged on two sides of the supporting beam (542), and the clamping jaw linear module (53) is connected with the compatible linear module (52) through a Y-direction supporting plate (522).
3. A square-case battery stacking system as defined in claim 2, wherein: the clamping assembly (21) comprises a pair of clamping jaws (211), and positioning grooves (212) matched with the liquid cooling pipes (712) are formed in the end parts of the clamping jaws (211);
the clamping assembly (21) further comprises an insertion cylinder (213) for driving the clamping jaw (211) to move along the X axis and a clamping cylinder (214) for driving the pair of clamping jaws (211) to move oppositely or reversely along the Y direction.
4. A square-case battery stacking system as defined in claim 2, wherein: the balance cylinders (31) are respectively connected with the Y-direction support plate (522) through a group of centering linear modules (55) so as to drive the balance cylinders (31) to move along the Y axis;
the output ends of the two groups of centering linear modules (55) are connected through the balance beam (33) so as to realize synchronous movement of the two groups of balance cylinders (31).
5. A square-case battery stacking system as defined in claim 4, wherein: the pressing plate (41) is provided on the balance beam (33).
6. A square-case battery stacking system as defined in claim 5, wherein: the balance beam (33) is fixedly provided with a bearing plate (42), the pressing plate (41) is movably connected with the bearing plate (42), and the bearing plate (42) is provided with a pressure sensor (44) to monitor the pressing force between the pressing plate (41) and the bearing plate (42) in real time.
7. A square-case battery stacking system as defined in claim 6, wherein: the pressurizing plate (41) consists of a fixed plate (411) positioned in the middle and first movable plates (412) positioned at two sides, and the fixed plate (411) is movably connected with the first movable plates (412); the first movable plate (412) is provided with a second follow-up piece (413) which drives the first movable plate (412) to move relative to the fixed plate (411).
8. A square-case battery stacking system as defined in claim 1, wherein: the two groups of stacking tables are respectively connected to a group of switching linear modules (12) arranged along the Y axis, and the switching of the two groups of stacking tables is completed through the switching linear modules (12).
9. A method of stacking a square battery, comprising: stacking the battery cells (71) by using the square shell battery stacking system as set forth in any one of claims 1-8, comprising the steps of placing the battery cells (71) on a stacking table (1) by using a feeding mechanism (6), centering the battery cells (71) on the stacking table (1) row by using a centering mechanism (3), clamping liquid cooling pipes (712) on two sides of the battery cells (71) by using a clamping assembly (21) to realize the pre-insertion of two adjacent groups of liquid cooling pipes (712), and forming the battery cells (71) on the stacking table (1) into a whole by using a pressurizing mechanism (4) after the pre-insertion of the liquid cooling pipes (712).
10. A method of stacking square cells as defined in claim 9, wherein: comprises a pre-stacking process for stacking a plurality of groups of battery cell combinations (7) comprising a plurality of groups of battery cells (71), and a total stacking process for stacking the plurality of groups of battery cell combinations (7) after pre-stacking into a battery module.
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| CN117133991B true CN117133991B (en) | 2024-02-27 |
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| CN117810515B (en) * | 2024-02-28 | 2024-05-31 | 江苏烽禾升智能科技有限公司 | Self-adaptive pressurizing stacking equipment and pressurizing stacking assembly method |
| CN117937008A (en) * | 2024-03-25 | 2024-04-26 | 江苏烽禾升智能科技有限公司 | Bidirectional stacking equipment and method for square-shell batteries |
| CN117945166A (en) * | 2024-03-27 | 2024-04-30 | 江苏烽禾升智能科技有限公司 | Stacked battery for different sized batteries |
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