CN115566248B - Cell module stacking extrusion device and extrusion processing method - Google Patents
Cell module stacking extrusion device and extrusion processing method Download PDFInfo
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- CN115566248B CN115566248B CN202211378654.9A CN202211378654A CN115566248B CN 115566248 B CN115566248 B CN 115566248B CN 202211378654 A CN202211378654 A CN 202211378654A CN 115566248 B CN115566248 B CN 115566248B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a stacking and extruding device and an extruding and processing method for an electric core module, and belongs to the technical field of new energy batteries. The cell module stacking and extruding device comprises a mounting platform, an end face pressing mechanism and a top pressing bar. The mounting platform is provided with the bottom locating plate on the installation face, and end face hold-down mechanism includes first support, second support, tip clamp plate and drive shaft, and first support and second support set up respectively in the both sides of bottom locating plate, and the drive shaft slidably wears to locate on the first support, and the tip clamp plate is connected in the one end of drive shaft, and the other end of drive shaft is used for being connected with drive arrangement, and the one end of top layering is rotated through pivot and first support and is connected, has the hasp structure on the second support. The battery cell module stacking and extruding device can solve the problem that the polar posts are not on the same horizontal plane due to the fact that single battery cells are longitudinally moved in the battery cell module extruding process, and further the follow-up welding precision and the product yield are low.
Description
Technical Field
The invention relates to the technical field of new energy batteries, in particular to a stacking and extruding device and an extruding processing method for an electric core module.
Background
In the field of new energy batteries, in order to improve the cruising ability, different numbers of electric cores are often required to be connected in series-parallel to form an electric core module so as to provide corresponding voltage or current for a load end. When in assembly, a plurality of single battery cells are sequentially arranged into a row and are tightly adhered to each other, and then the single battery cells in the row are combined together through the end plate and the side plate to form a battery cell module.
In the related art, in order to reduce the gap between the plurality of unit cells of the cell module after assembly, it is generally necessary to press the cell module. The end plates at two ends of the cell module are pressed by the extrusion device, so that a plurality of single cells which are sequentially arranged between the two end plates are tightly adhered to each other.
In the extrusion processing process of the battery cell module, due to certain assembly gaps among the plurality of single battery cells, adjacent single battery cells can slide relatively along the height direction in the process of mutual contact during extrusion, so that single battery cells in the assembled battery module are not on the same horizontal plane, the single battery cells in the battery module can be uneven, and the poles of the single battery cells are not on the same horizontal plane, so that when the battery cell module is subjected to bus welding, the bus bars and the poles are not on the same horizontal plane, thereby causing welding virtual welding, and the phenomenon of internal looseness after welding, and leading to low product yield.
Disclosure of Invention
The embodiment of the invention provides a stacking and extruding device and an extruding processing method for a battery cell module, which can solve the problems that a pole is not on the same horizontal plane due to the occurrence of longitudinal movement of a single battery cell in the extrusion process of the battery cell module, so that the subsequent welding precision and the product yield are low. The technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a stack extrusion apparatus for a cell module, including:
a mounting platform, an end face compressing mechanism and a top pressing bar,
the mounting platform is provided with a mounting surface, the mounting surface is provided with a bottom positioning plate, the end face pressing mechanism comprises a first support, a second support, an end pressing plate and a driving shaft, the first support and the second support are respectively arranged on two sides of the bottom positioning plate, the driving shaft is parallel to the mounting surface, the driving shaft is slidably arranged on the first support in a penetrating manner, the end pressing plate is connected with one end of the driving shaft, which is positioned between the first support and the second support, the other end of the driving shaft is used for being connected with a driving device,
one end of the top pressing strip is rotationally connected with the first support through a rotating shaft, the rotating shaft is parallel to the bottom positioning plate and perpendicular to the driving shaft, and the second support is provided with a locking structure matched with the other end of the top pressing strip.
Optionally, the first support is provided with a first end face limiting rod, the first end face limiting rod is parallel to the driving shaft, one end of the first end face limiting rod is connected with the first support, the other end of the first end face limiting rod is located between the first support and the second support, and the other end of the first end face limiting rod is used for being matched with a positioning hole in an end plate on one side of the battery cell module.
Optionally, the second support is provided with a second end face limiting rod, the second end face limiting rod is arranged on the second support in a penetrating mode, one end of the second end face limiting rod is located between the first support and the second support, the second end face limiting rod and the first end face limiting rod are coaxially arranged, and one end of the second end face limiting rod is used for being matched with a positioning hole in an end plate on the other side of the cell module.
Optionally, a distance between one end of the second end face limiting rod and the other end of the first end face limiting rod is adjustable.
Optionally, the first support is provided with a plurality of first end face limiting rods, the first end face limiting rods are uniformly spaced along a direction parallel to the bottom locating plate, and the second support is provided with a plurality of second end face limiting rods corresponding to the first end face limiting rods one by one.
Optionally, the cell module stacks extrusion device and still includes two side hold-down mechanisms, side hold-down mechanism includes side push pedal, slider and slide rail, the slide rail set up in on the installation face and with the drive shaft is perpendicular, the slider slidable install in on the slide rail, the side push pedal connect in on the slider, the side push plate with the tip clamp plate with the bottom locating plate is perpendicular, two side hold-down mechanisms set up respectively in the both sides of bottom locating plate, and for first support, bottom locating plate and second support symmetry are arranged.
Optionally, a plurality of groups of pole mounting holes are formed in the bottom positioning plate, each group of pole mounting holes comprises two pole mounting holes for corresponding positive poles and negative poles of the battery core, and the plurality of groups of pole mounting holes are uniformly arranged at intervals along the axial direction of the driving shaft.
Optionally, the cell module stacking extrusion device includes two top press strips, and the two top press strips are symmetrically arranged relative to the driving shaft.
Optionally, a holding handle is arranged on the top pressing strip.
In a second aspect, an embodiment of the present invention further provides an extrusion method, which is implemented based on the stack extrusion device of the first aspect, where the cell module includes two end plates and a plurality of cells, and the plurality of cells are sequentially arranged between the two end plates, and the extrusion method includes:
unlocking the locking structure, and lifting the other end of the top pressing strip;
placing the battery cell module on the bottom positioning plate, and enabling the poles of the plurality of battery cells in the battery cell module to be in contact with the bottom positioning plate, so that the two end plates of the battery cell module are respectively opposite to the position between the end pressing plate and the second support;
the other end of the top pressing strip is rotated to the second support again, so that the top pressing strip presses the battery cell module and is locked by the locking structure;
and driving the end pressing plate by using the driving shaft to extrude the cell module.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
when the stacking and extruding device for the battery cell module is used for extruding the battery cell module, one faces, provided with the polar posts, of the plurality of battery cells in the battery cell module are supported by the bottom locating plate, and meanwhile, the battery cell module is pressed and limited from the upper side by the locked top pressing bar, so that one face, provided with the polar posts, of each single battery cell is attached to the bottom locating plate, and the face, provided with the polar posts, of the battery cell is guaranteed to be positioned on the same horizontal plane. Therefore, in the process of eliminating the assembly gap by utilizing the end pressing plate to press the cell module in the horizontal direction, the poles of a plurality of cells are always positioned on the same horizontal plane, and the problem that the poles are not positioned on the same horizontal plane due to the fact that single cells longitudinally float in the extrusion process of the cell module is solved, and the follow-up welding precision and the product yield are low is further caused.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a stacking and extruding device for a cell module according to an embodiment of the present invention;
fig. 2 is a schematic top view of a stacked extrusion device for a cell module according to an embodiment of the present invention;
fig. 3 is a schematic front view of a stacked extrusion device for a cell module according to an embodiment of the present invention;
fig. 4 is a schematic right-view structural diagram of a cell module stacking and extruding device according to an embodiment of the present invention;
fig. 5 is a schematic view of a partial enlarged structure of a stacking and extruding device for a cell module according to an embodiment of the present invention;
FIG. 6 is a schematic top view of a bottom positioning plate according to an embodiment of the present invention;
fig. 7 is a flowchart of an extrusion method according to an embodiment of the present invention.
In the figure:
1-a mounting platform; 1 a-a mounting surface; 2-an end face compressing mechanism; 3-top bead; 4-a side hold-down mechanism; 5-a cell module; 11-a bottom positioning plate; 21-a first support; 22-a second support; 23-end press plates; 24-driving shaft; 31-a rotating shaft; 32-a grip handle; 41-side push plate; 42-sliding blocks; 43-slide rail; 51-end plate; 52-an electric core; 111-pole mounting holes; 211-a first end face stop bar; 221-a locking notch structure; 222-second end face stop lever.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
In the related art, in order to reduce the gap between the plurality of unit cells of the cell module after assembly, it is generally necessary to press the cell module. The end plates at two ends of the cell module are pressed by the extrusion device, so that a plurality of single cells which are sequentially arranged between the two end plates are tightly adhered to each other.
In the extrusion processing process of the battery cell module, due to certain assembly gaps among the plurality of single battery cells, adjacent single battery cells can slide relatively along the height direction in the process of mutual contact during extrusion, so that single battery cells in the assembled battery module are not on the same horizontal plane, the single battery cells in the battery module can be uneven, and the poles of the single battery cells are not on the same horizontal plane, so that when the battery cell module is subjected to bus welding, the bus bars and the poles are not on the same horizontal plane, thereby causing welding virtual welding, and the phenomenon of internal looseness after welding, and leading to low product yield.
Fig. 1 is a schematic perspective view of a stacking and extruding device for a cell module according to an embodiment of the present invention. Fig. 2 is a schematic top view of a stacked extrusion device for a cell module according to an embodiment of the present invention. Fig. 3 is a schematic front view of a stacked extrusion device for a cell module according to an embodiment of the present invention. Fig. 4 is a schematic right-view structural diagram of a cell module stacking and extruding device according to an embodiment of the present invention. Fig. 5 is a schematic view of a partial enlarged structure of a stacked extrusion device for a cell module according to an embodiment of the present invention. Fig. 6 is a schematic top view of a bottom positioning plate according to an embodiment of the present invention. As shown in fig. 1 to 6, in practice, the applicant provides a cell module stack extrusion device comprising a mounting platform 1, an end face compression mechanism 2 and a top bead 3.
The mounting platform 1 is provided with a mounting surface 1a, and the mounting surface 1a is provided with a bottom positioning plate 11. The end face hold-down mechanism 2 includes a first support 21, a second support 22, an end hold-down plate 23, and a drive shaft 24. The first support 21 and the second support 22 are respectively disposed on two sides of the bottom positioning plate 11, the driving shaft 24 is parallel to the mounting surface 1a, and the driving shaft 24 is slidably disposed on the first support 21. The end press plate 23 is connected to one end of the drive shaft 24 between the first support 21 and the second support 22, the other end of the drive shaft 24 being adapted to be connected to a drive device. Illustratively, in the embodiment of the present invention, the drive shaft 24 may be controlled by an external driving device, so that the drive shaft 24 may be extended and contracted in a horizontal direction parallel to the bottom positioning plate 11, thereby driving the end pressing plate 23 to move toward or away from the second support 22.
One end of the top pressing strip 3 is rotatably connected with the first support 21 through a rotating shaft 31, the rotating shaft 31 is parallel to the bottom positioning plate 11 and perpendicular to the driving shaft 24, and the second support 22 is provided with a locking structure 221 matched with the other end of the top pressing strip 3. Illustratively, in one operating condition, the top bead 3 is parallel to the bottom locating plate, and the other end thereof mates with the second support 22 and is locked by the locking mechanism 221; in another working state, by unlocking the locking structure 221, the operator can rotate and lift the top pressing bar 3 around the rotating shaft 31 on the first support 21, so that the space above the first support 21 and the second support 22 is reserved, and the installation of the cell module 5 is facilitated.
In the embodiment of the present invention, when the pressing process of the cell module 5 is required, the worker can unlock the locking structure 221, rotate and lift the top pressing bar 3 around the rotating shaft 31 on the first support 21, and place the pre-assembled cell module 5 on the bottom positioning plate 11 from above. The battery cell module 5 includes two end plates 51 and a plurality of battery cells 52, and the plurality of battery cells 52 are sequentially arranged between the two end plates 51. When the battery cells 52 are placed, one side, provided with the pole, of each battery cell 52 faces the bottom positioning plate 11, so that the pole of each battery cell 52 is contacted with the bottom positioning plate 11, the battery cells 52 are supported by the plate surface of the bottom positioning plate, and the terminal ends of the pole of each battery cell 52 are located on the same plane. And then the other end of the top pressing bar 3 is rotated to the second support 22 again, so that the top pressing bar 3 presses the battery cell module 5, and the locking structure 221 is utilized to lock the top pressing bar 3. At this time, the top pressing bar 3 abuts against the bottom surfaces of the plurality of battery cells 52 to limit and fix the battery cell modules 5 in the vertical direction. The driving device can then be used to control the driving shaft 24 to move relatively to the first support 21, the driving end pressing plate 23 moves towards the second support 22 and contacts with the end plate 51 on one side of the battery cell module 5, and the battery cell module 5 positioned between the first support 21 and the second support 22 is horizontally extruded, so that the plurality of battery cells 52 are closely attached to each other, and possible assembly gaps are eliminated.
When the stacking and extruding device for the battery cell module provided by the embodiment of the invention is used for carrying out extrusion processing on the battery cell module 5, the bottom positioning plate 11 is used for supporting one surface of the battery cell module 5, which is provided with the polar posts, of the plurality of battery cells 52, and the locked top pressing strip 3 is used for pressing and limiting the battery cell module 5 from the upper side, so that one surface of each single battery cell 52, which is provided with the polar posts, is attached to the bottom positioning plate 11, and the surface of each battery cell 52, which is provided with the polar posts, is further ensured to be positioned on the same horizontal plane. Therefore, in the process of eliminating the assembly gap by utilizing the end pressing plate 23 to press the battery core module 5 in the horizontal direction, the poles of the battery cores 52 are always positioned on the same horizontal plane, so that the problem that the poles are not positioned on the same horizontal plane due to the occurrence of longitudinal movement of the single battery core 52 in the extrusion process of the battery core module 5, and the subsequent welding precision and the low product yield are further caused is solved.
Optionally, a plurality of groups of pole mounting holes 111 are provided on the bottom positioning plate 11, each group of pole mounting holes 111 includes two pole mounting holes 111 for corresponding positive pole and negative pole of the battery cell, and the plurality of groups of pole mounting holes 111 are uniformly spaced along the axial direction of the driving shaft 24. Illustratively, in another possible implementation manner, when the cell module 5 is placed on the bottom positioning plate 11 upside down, by providing multiple sets of post mounting holes 111, positive posts and negative posts on multiple cells 52 in the cell module 5 can be respectively inserted into the multiple sets of post mounting holes 111 correspondingly, and a face of each single cell 52 with a post is directly contacted with a face of the bottom positioning plate 11. The bottom locating plate 11 adopting the form supports the cell module 5, so that the terminal of the pole on the cell 52 is prevented from directly contacting with the plate surface of the bottom locating plate 11 while the same plane locating effect is ensured, the stress born by the terminal of the cell 52 due to compaction and subsequent extrusion processing by the top pressing strip 3 is reduced, and scratch damage is avoided.
Illustratively, in the embodiment of the present invention, the diameter of the post mounting hole 111 is generally set to be larger than the diameter of the cell post on the cell 52, leaving a margin for the position movement of the plurality of cells 52 in the horizontal direction after the gaps become smaller by being pressed.
Optionally, the first support 21 is provided with a first end face limiting rod 211, the first end face limiting rod 211 is parallel to the driving shaft 24, one end of the first end face limiting rod 211 is connected with the first support 21, the other end of the first end face limiting rod 211 is located between the first support 21 and the second support 22, and the other end of the first end face limiting rod 211 is used for being matched with a positioning hole in the end plate 51 on one side of the cell module 5. Illustratively, in an embodiment of the present invention, after the cell module 5 is placed on the bottom positioning plate 11, the positioning hole on the end plate 51 on one side of the cell module 5 is mated with the first end stop 211, so that the other end of the first end stop 211 is inserted into the positioning hole on the end plate 51. In the process that the end pressing plate 23 moves and contacts with the side end plate 51 and extrudes, the first end surface limiting rod 211 can play a primary limiting and fixing role on the battery cell module 5 in the horizontal direction, so that relative shaking is avoided, and the processing stability and accuracy are improved.
Illustratively, in the embodiment of the present invention, the end pressing plate 23 is provided with a through hole matched with the first end surface limiting rod 211, and the first end surface limiting rod 211 passes through the end pressing plate 23 through the through hole, so that the movement of the end pressing plate 23 is not interfered, and the limiting guiding function of the end pressing plate 23 is also achieved.
Optionally, the second support 22 is provided with a second end surface limiting rod 222, the second end surface limiting rod 222 is arranged on the second support 22 in a penetrating manner, one end of the second end surface limiting rod 222 is located between the first support 21 and the second support 22, the second end surface limiting rod 222 is coaxially arranged with the first end surface limiting rod 211, and one end of the second end surface limiting rod 222 is used for being matched with a positioning hole on the end plate 51 on the other side of the cell module 5. Illustratively, in the embodiment of the present invention, by providing the second end stop lever 222 coaxial with the first end stop lever 211 on the second support 22, after the cell module 5 is placed on the bottom positioning plate 11, the positioning hole on the other end plate 51 of the cell module 5 and the second end stop lever 222 can be simultaneously matched, so that one end of the second end stop lever 222 is inserted into the positioning hole on the other end plate 51. Therefore, the limit fixing of the battery cell module 5 on two sides in the horizontal direction is realized, and the stability and the accuracy of the subsequent extrusion processing are further improved.
Optionally, a distance between one end of the second end surface limiting rod 222 and the other end of the first end surface limiting rod 211 is adjustable. In the embodiment of the present invention, the second end surface limiting rod 222 is provided with an axially adjustable structure, and can be adaptively stretched according to the specification of the cell module 5, so that the interval between one end of the second end surface limiting rod 222 and the other end of the first end surface limiting rod 211 is adjusted, the feeding of the cell module 5 is facilitated, and meanwhile, the adaptability of the cell module stacking and extruding device is improved.
Optionally, the first support 21 has a plurality of first end surface limiting rods 211, the plurality of first end surface limiting rods 211 are uniformly spaced along a direction parallel to the bottom positioning plate 11, and the second support 22 has a plurality of second end surface limiting rods 222 corresponding to the plurality of first end surface limiting rods 211 one by one. Illustratively, in the embodiment of the present invention, by arranging multiple sets of first end face limiting rods 211 and second end face limiting rods 222 in a manner of one-to-one correspondence along the horizontal direction at intervals, and simultaneously contacting and positioning and supporting the end plates 51 on two sides of the cell module 5 through the multiple first end face limiting rods 211 and the multiple second end face limiting rods 222, stress on the single first end face limiting rods 211 and the single second end face limiting rods 222 is reduced and more even, the stability of cooperation and supporting is increased, and the overall service life of the cell module stacking and extruding device is prolonged.
Optionally, the cell module stacking extrusion device further includes two side pressing mechanisms 4, the side pressing mechanisms 4 include side pushing plates 41, sliding blocks 42 and sliding rails 43, the sliding rails 43 are disposed on the mounting surface 1a and perpendicular to the driving shaft 24, the sliding blocks 42 are slidably mounted on the sliding rails 43, the side pushing plates 41 are connected to the sliding blocks 42, the side pushing plates 41 are perpendicular to the end pressing plates 23 and the bottom positioning plates 11, and the two side pressing mechanisms 4 are disposed on two sides of the bottom positioning plates 11 and symmetrically disposed with respect to the first support 21, the bottom positioning plates 11 and the second support 22. Illustratively, in the embodiment of the present invention, by symmetrically disposing the two side pressing mechanisms 4, after the extrusion of the cell module 5 is completed by the end pressing plate 23, the gaps between the plurality of cells 52 are eliminated. The slide block 42 can be utilized to drive the side push plate 41 to laterally extrude the plurality of battery cells 52 from two sides of the battery cell module 5, so that the horizontal lateral offset of a single battery cell 52 in the extrusion process which possibly exists is extruded, reset and corrected, the combination precision of the battery cell module 5 after extrusion processing is improved, and the welding precision and quality problems of the subsequent busbar and pole welding are further avoided.
Alternatively, the cell module stack compression device comprises two top compression beads 3, the two top compression beads 3 being symmetrically arranged with respect to the drive shaft 24. By arranging two rotatable top pressing strips 3, the cell module stacking and extruding device can simultaneously compress, position and horizontally extrude two cell modules 5 arranged in parallel, so that the overall processing efficiency is effectively improved.
Optionally, a grip handle 32 is provided on the top bead 3. Illustratively, in the embodiment of the invention, by arranging the holding handle 32 on the top pressing bar 3, the top pressing bar 3 is conveniently lifted and covered back by a worker, and the practicability of the cell module stacking and extruding device is improved.
Fig. 7 is a flowchart of an extrusion method according to an embodiment of the present invention. As shown in fig. 7, the embodiment of the present invention further provides an extrusion method for manufacturing the cell module stack extrusion device shown in fig. 1 to 6, the extrusion method comprising:
s1, unlocking the locking structure 221, and lifting the other end of the top pressing bar 3.
Specifically, when the pressing process of the cell module 5 is required, the worker can unlock the locking structure 221, rotate and lift the top pressing bar 3 around the rotating shaft 31 on the first support 21, and leave a placing space for the cell module 5.
S2, placing the cell module 5 on the bottom positioning plate 11, and enabling the poles of the plurality of cells 52 in the cell module 5 to be in contact with the bottom positioning plate 11, so that the two end plates 51 of the cell module 5 are respectively opposite to the position between the end pressing plate 23 and the second support 22.
Specifically, when the battery is placed, the side, provided with the polar posts, of the plurality of battery cells 52 faces the bottom positioning plate 11, so that the polar posts of the plurality of battery cells 52 are contacted with the bottom positioning plate 11, and the polar posts of the plurality of battery cells 52 are supported by the plate surface of the bottom positioning plate, so that the polar post ends of the plurality of battery cells 52 are located on the same plane.
S3, the other end of the top pressing strip 3 is rotated to the second support 22 again, so that the top pressing strip 3 presses the battery cell module 5 and is locked by the locking structure 221.
Specifically, the other end of the top pressing bar 3 is then rotated to the second support 22 again, so that the top pressing bar 3 presses the battery module 5, and the top pressing bar 3 is locked by the locking structure 221. At this time, the top pressing bar 3 abuts against the bottom surfaces of the plurality of battery cells 52 to limit and fix the battery cell modules 5 in the vertical direction.
And S4, driving the end pressing plate 23 by using the driving shaft 24 to squeeze the battery cell module 5.
Specifically, the driving device is used for controlling the driving shaft 24 to relatively move relative to the first support 21, the driving end pressing plate 23 moves towards the second support 22 and contacts with the end plate 51 on one side of the battery cell module 5, and the battery cell module 5 positioned between the first support 21 and the second support 22 is horizontally extruded, so that a plurality of battery cells 52 are closely attached to each other, and possible assembly gaps are eliminated.
The cell module stacking extrusion device and the extrusion processing method based on the device provided by the embodiment of the invention are adopted. When the cell module 5 is extruded, one side, provided with the polar posts, of the plurality of cells 52 in the cell module 5 is supported by the bottom positioning plate 11, and meanwhile, the cell module 5 is pressed and limited from the upper side by the locked top pressing bar 3, so that one side, provided with the polar posts, of each single cell 52 is attached to the bottom positioning plate 11, and the side, provided with the polar posts, of the cell 52 is guaranteed to be positioned on the same horizontal plane. Therefore, in the process of eliminating the assembly gap by utilizing the end pressing plate 23 to press the battery core module 5 in the horizontal direction, the poles of the battery cores 52 are always positioned on the same horizontal plane, so that the problem that the poles are not positioned on the same horizontal plane due to the occurrence of longitudinal movement of the single battery core 52 in the extrusion process of the battery core module 5, and the subsequent welding precision and the low product yield are further caused is solved.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention, but rather, the invention is to be construed as limited to the appended claims.
Claims (7)
1. A cell module stack extrusion apparatus comprising: a mounting platform (1), an end face compressing mechanism (2) and a top pressing bar (3),
the mounting platform (1) is provided with a mounting surface (1 a), the mounting surface (1 a) is provided with a bottom positioning plate (11), the end face pressing mechanism (2) comprises a first support (21), a second support (22), an end pressing plate (23) and a driving shaft (24), the first support (21) and the second support (22) are respectively arranged on two sides of the bottom positioning plate (11), the driving shaft (24) is parallel to the mounting surface (1 a), the driving shaft (24) slidably penetrates through the first support (21), the end pressing plate (23) is connected to one end of the driving shaft (24) between the first support (21) and the second support (22), the other end of the driving shaft (24) is used for being connected with a driving device,
one end of the top pressing strip (3) is rotationally connected with the first support (21) through a rotating shaft (31), the rotating shaft (31) is parallel to the bottom positioning plate (11) and perpendicular to the driving shaft (24), and the second support (22) is provided with a locking structure (221) matched with the other end of the top pressing strip (3);
the first support (21) is provided with a first end face limiting rod (211), the first end face limiting rod (211) is parallel to the driving shaft (24), one end of the first end face limiting rod (211) is connected with the first support (21), the other end of the first end face limiting rod (211) is positioned between the first support (21) and the second support (22), and the other end of the first end face limiting rod (211) is used for being matched with a positioning hole in an end plate (51) at one side of the battery cell module (5);
the second support (22) is provided with a second end face limiting rod (222), the second end face limiting rod (222) is arranged on the second support (22) in a penetrating mode, one end of the second end face limiting rod (222) is located between the first support (21) and the second support (22), the second end face limiting rod (222) and the first end face limiting rod (211) are coaxially arranged, one end of the second end face limiting rod (222) is used for being matched with a positioning hole in an end plate (51) on the other side of the cell module (5), and the distance between one end of the second end face limiting rod (222) and the other end of the first end face limiting rod (211) is adjustable.
2. The cell module stacking and extruding device according to claim 1, wherein the first support (21) is provided with a plurality of first end surface limiting rods (211), the plurality of first end surface limiting rods (211) are uniformly spaced along a direction parallel to the bottom positioning plate (11), and the second support (22) is provided with a plurality of second end surface limiting rods (222) corresponding to the plurality of first end surface limiting rods (211) one by one.
3. The cell module stacking and extruding device according to claim 1, further comprising two side pressing mechanisms (4), wherein the side pressing mechanisms (4) comprise side pushing plates (41), sliding blocks (42) and sliding rails (43), the sliding rails (43) are arranged on the mounting surface (1 a) and perpendicular to the driving shaft (24), the sliding blocks (42) are slidably mounted on the sliding rails (43), the side pushing plates (41) are connected to the sliding blocks (42), the side pushing plates (41) are perpendicular to the end pressing plates (23) and the bottom positioning plates (11), and the two side pressing mechanisms (4) are respectively arranged on two sides of the bottom positioning plates (11) and are symmetrically arranged relative to the first support (21), the bottom positioning plates (11) and the second support (22).
4. The cell module stacking and extruding device according to claim 1, wherein a plurality of groups of pole mounting holes (111) are formed in the bottom positioning plate (11), each group of pole mounting holes (111) comprises two pole mounting holes (111) for corresponding cell positive poles and cell negative poles, and the plurality of groups of pole mounting holes (111) are uniformly spaced along the axial direction of the driving shaft (24).
5. Cell module stacking extrusion device according to claim 1, characterized in that it comprises two top beads (3), the two top beads (3) being arranged symmetrically with respect to the drive shaft (24).
6. Cell module stacking extrusion device according to claim 1, characterized in that the top bead (3) is provided with a gripping handle (32).
7. A method of extrusion, based on a cell module stacking extrusion apparatus according to any one of claims 1 to 4, the cell module (5) comprising two end plates (51) and a plurality of cells (52), the plurality of cells (52) being arranged in sequence between the two end plates (51), characterized in that the method of extrusion comprises:
unlocking the locking structure (221) and lifting the other end of the top pressing bar (3);
placing the cell module (5) on the bottom positioning plate (11) so that the poles of the plurality of cells (52) in the cell module (5) are in contact with the bottom positioning plate (11), and enabling the two end plates (51) of the cell module (5) to be opposite to the end pressing plate (23) and the second support (22) respectively;
the other end of the top pressing strip (3) is rotated to the second support (22) again, so that the top pressing strip (3) presses the battery cell module (5) and is locked by the locking structure (221);
the end pressing plate (23) is driven by the driving shaft (24) to press the cell module (5).
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| CN114665138A (en) * | 2022-05-20 | 2022-06-24 | 苏州德星云智能装备有限公司 | PACK gap stacking device without module design |
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| US20190157708A1 (en) * | 2017-11-20 | 2019-05-23 | Shenzhen Newpower Automation Equipment Co., LTD. | Lithium Battery Formation Fixture and Automation Battery Formation Equipment |
| CN208522044U (en) * | 2018-05-18 | 2019-02-19 | 蜂巢能源科技有限公司 | Battery core stack device |
| WO2020113492A1 (en) * | 2018-12-06 | 2020-06-11 | 杭州容大智造科技有限公司 | Delivery vehicle capable of quick battery replacement |
| CN209477578U (en) * | 2018-12-21 | 2019-10-11 | 杭州捷能科技有限公司 | A kind of battery modules assembling jig |
| CN209571507U (en) * | 2019-03-11 | 2019-11-01 | 合肥国轩高科动力能源有限公司 | A kind of compression tooling of lithium ion rectangular cell mould group stacking |
| CN110280950A (en) * | 2019-07-04 | 2019-09-27 | 宁波利维能储能系统有限公司 | A kind of rectangular cell module clamping tool |
| CN112038681A (en) * | 2020-09-21 | 2020-12-04 | 无锡奥特维智能装备有限公司 | Battery cell stacking device and stacking method |
| KR20220101269A (en) * | 2021-01-11 | 2022-07-19 | 주식회사 엘지에너지솔루션 | Pressing tray for battery cell and activating apparatus of battery cell including the same |
| CN215658844U (en) * | 2021-09-24 | 2022-01-28 | 合肥国轩高科动力能源有限公司 | Stacking, packaging and welding integrated tool suitable for square battery cell |
| CN216850180U (en) * | 2021-10-25 | 2022-06-28 | 宁德时代新能源科技股份有限公司 | Battery assembly jig |
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| CN114665138A (en) * | 2022-05-20 | 2022-06-24 | 苏州德星云智能装备有限公司 | PACK gap stacking device without module design |
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