CN220731600U - Two-fold top sealing device for large-size polymer lithium battery - Google Patents
Two-fold top sealing device for large-size polymer lithium battery Download PDFInfo
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- CN220731600U CN220731600U CN202321928249.XU CN202321928249U CN220731600U CN 220731600 U CN220731600 U CN 220731600U CN 202321928249 U CN202321928249 U CN 202321928249U CN 220731600 U CN220731600 U CN 220731600U
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- 238000007789 sealing Methods 0.000 title claims abstract description 112
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 75
- 229920000642 polymer Polymers 0.000 title claims abstract description 72
- 238000003825 pressing Methods 0.000 claims abstract description 99
- 238000005452 bending Methods 0.000 claims abstract description 51
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 13
- 230000008859 change Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 238000003475 lamination Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
-
- 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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Abstract
The application provides a two-fold top sealing device for a large-size polymer lithium battery. The two-fold top sealing device for the large-size polymer lithium battery comprises a pre-folding mechanism and a two-fold heat sealing mechanism which are sequentially arranged; the side pressing piece is provided with a side pressing edge, the side pressing piece obliquely bends the bending edge so that the side pressing edge is used for being abutted against the bending edge, and the side pressing edge is used for moving towards a direction approaching or far away from the clearance groove; the pressing piece moves towards the heat-seal bottom plate, so that the pressing piece presses the bending folded edge, the bending folded edge and the original side edge of the side edge to be sealed are mutually parallel to form a parallel sealed edge to be sealed, the limiting pressing piece moves towards the pressing piece, the limiting pressing piece is used for being abutted with the bending folded edge which is arranged in parallel, the heat-seal top plate moves towards the heat-seal bottom plate, and the heat-seal top plate and the heat-seal bottom plate are arranged in a pressing mode. The two-fold top sealing device for the large-size polymer lithium battery enables the flatness of the sealed side edge of the large-size polymer lithium battery subjected to edge sealing treatment to be good.
Description
Technical Field
The utility model relates to the technical field of lithium battery edge sealing equipment, in particular to a two-fold top sealing device for a large-size polymer lithium battery.
Background
In recent years, with the continuous development of new energy automobiles, the demands of lithium batteries in the market are also increasing, so that the variety of lithium batteries is increasing in order to meet various demands in the market. The new energy automobile adopts a large-size polymer lithium battery as a power source, and the large-size polymer lithium battery needs to be subjected to edge sealing treatment by an edge sealing device in the manufacturing process of the large-size polymer lithium battery, so that the large-size polymer lithium battery is sealed, and leakage of the large-size polymer lithium battery is prevented.
In prior art, the staff adopts banding device to carry out the in-process of banding processing to jumbo size polymer lithium cell, first of all, the staff needs to adopt the hem device to carry out a hem processing to the side that waits of jumbo size polymer lithium cell, so as to wait to seal the side and buckle, then, the staff places the side that waits of jumbo size polymer lithium cell after buckling in banding device and carries out banding processing, in the in-process of jumbo size polymer lithium cell tear down fortune, because the length of the side that waits of jumbo size polymer lithium cell is longer and thickness is thicker, make the extension resilience ability of waiting to seal the side better, so that the side that waits to seal after buckling is more easily kick-backed in the in-process of tear down fortune, thereby make the former side of waiting to seal the side after buckling and the resilience of folding edge along with waiting to seal the side that forms, lead to the position along with the change of angle, make the position of buckling the side change in the former side of waiting to seal the side and the side that the in-process of jumbo size polymer lithium cell, thereby make the former side of waiting to seal after buckling and the side have relatively poor parallel with the effect of folding side that makes the former side and the effect of folding side that the former side has been difficult to seal the side after the effect of folding, even after the effect of the side has been folded side that the effect of the side has been difficult to be folded in the former side, even after the effect of the side has been difficult to make the effect of the side that the side has been folded in the effect of the side that has been folded.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a two-fold top sealing device for a large-size polymer lithium battery, which ensures that the flatness of the sealed side edges of the large-size polymer lithium battery subjected to edge sealing treatment is good.
The aim of the utility model is realized by the following technical scheme:
a two-fold top seal device for a large-size polymer lithium battery, comprising: the pre-folding mechanism and the two-folding heat sealing mechanism are sequentially arranged;
the pre-folding mechanism comprises an ejection piece, a bottom support piece, a pressing piece and a side pressing piece, wherein the ejection piece is movably connected with the bottom support piece, a clearance groove is formed in the bottom support piece, the bottom support piece is used for supporting a large-size polymer lithium battery, the ejection piece is used for pushing the large-size polymer lithium battery so that a side to be sealed of the large-size polymer lithium battery is abutted with the pressing piece, the pressing piece enables the side to be sealed to be bent downwards to form a bent edge, the side pressing piece is provided with a side pressing edge, the side pressing piece enables the bent edge to be bent obliquely, the side pressing edge is used for being abutted with the bent edge, and the side pressing edge is used for moving towards a direction approaching to or far from the clearance groove;
the two-fold heat sealing mechanism comprises a flattening piece, a limiting pressing piece, a heat sealing bottom plate and a heat sealing top plate, wherein the limiting pressing piece is connected with the heat sealing bottom plate, the flattening piece is used for being in butt joint with a bending edge, the flattening piece faces to the heat sealing bottom plate to move so that the flattening piece is used for pressing the bending edge, the bending edge and the original side edge of the side edge to be sealed are mutually parallel to form a parallel edge sealing part to be sealed together, the limiting pressing piece faces to the flattening piece to move so that the limiting pressing piece is used for being in butt joint with the bending edge of parallel arrangement, and the heat sealing top plate faces to the heat sealing bottom plate to move so that the heat sealing top plate is in press fit with the heat sealing bottom plate.
In one embodiment, the ejector comprises an ejector driving motor and an ejector seat, wherein a power output end of the ejector driving motor is connected with the ejector seat, so that the ejector driving motor drives the ejector seat to slide relative to the bottom support, the ejector seat is in sliding connection with the bottom support, and the ejector seat is used for pushing the large-size polymer lithium battery.
In one embodiment, the bottom support is further formed with a connection via hole, and the ejector seat is inserted through the connection via hole and is slidably connected with the bottom support.
In one embodiment, the hold-down piece is formed with a hold-down groove that communicates with the clearance groove.
In one embodiment, the pre-folding mechanism further comprises a side pressure fixing seat, a fixing groove is formed in the side pressure fixing seat, and a part of the side pressing piece is located in the fixing groove and is abutted to the side pressure fixing seat.
In one embodiment, the flattening element is provided with a guiding inclined plane, and the guiding inclined plane is abutted with the heat sealing bottom plate.
In one embodiment, the heat-sealing bottom plate is provided with a mounting connecting groove, and the flattening piece is positioned in the mounting connecting groove and is abutted with the heat-sealing bottom plate, so that the guide inclined plane is abutted with the groove wall of the mounting connecting groove.
In one embodiment, the heat-sealed top plate is formed with a heat-sealed groove, and when the heat-sealed top plate and the heat-sealed bottom plate are arranged in a pressing manner, the heat-sealed groove is communicated with the installation connecting groove.
In one embodiment, the limiting pressing piece is formed with a pressing groove, and the pressing groove is communicated with the avoidance groove.
In one embodiment, the limit pressing piece is welded with the heat sealing bottom plate.
Compared with the prior art, the utility model has at least the following advantages:
1. the side to be sealed is bent downwards by the lower pressing piece to form a bent edge, the side pressing piece bends the bent edge in an inclined mode, so that the side pressing edge is used for being abutted with the bent edge, the side pressing edge is used for moving towards the direction close to the avoidance groove, the bent edge is bent obliquely to enter the avoidance groove, the position of the bent edge is fixed under the combined action of the side pressing edge and the avoidance groove, and therefore the side to be sealed is bent; then, the staff places the side to be sealed after bending the large-size polymer lithium battery in a two-fold heat sealing mechanism for edge sealing treatment, the flattening piece presses the bent edges, the bent edges and the original side edges of the side to be sealed are mutually parallel to form a to-be-sealed parallel edge sealing position, the limiting pressing piece is used for being abutted against the parallel bending edges so that the positions of the parallel bent edges are fixed, at the moment, the flattening piece moves towards the direction away from the heat sealing bottom plate, the flattening piece is separated from the parallel bending edges, the heat sealing top plate moves towards the heat sealing bottom plate, the heat sealing top plate and the heat sealing bottom plate are in pressing arrangement, the to-be-sealed parallel edge sealing position is positioned between the heat sealing top plate and the heat sealing bottom plate, so that the heat sealing top plate and the bent edges are abutted against each other, the to-be-sealed parallel edge sealing position is sealed together under the combined action of the heat sealing top plate and the heat sealing bottom plate, and the edge sealing treatment of the large-size polymer lithium battery is completed;
2. in the disassembly and transportation process of the large-size polymer lithium battery, the large-size polymer lithium battery is disassembled and transported along the bottom support piece, so that the bending edge is always positioned in the avoiding groove, the avoiding groove plays a constraint role on the bending edge, the bending edge is harder to rebound, the problem that the extension rebound resilience of the side to be sealed is better because the length of the side to be sealed of the large-size polymer lithium battery is longer and the thickness of the side to be sealed is thicker in the prior art is solved, the problem that the rebound of the folded side to be sealed is easier in the disassembly and transportation process is solved, the problem that the bending angle formed between the original side of the folded side to be sealed and the bending edge is changed along with the rebound of the side to be sealed is solved, namely the problem that the position of the bending edge is changed along with the change of the bending angle is solved, and the position of the bending edge is harder to change in the disassembly and transportation process of the large-size polymer lithium battery is solved;
3. because the piece of flattening presses the hem of bending, make the hem and the former side of waiting to seal the side mutually parallel and form the parallel banding department of waiting to seal jointly, thereby the former side of waiting to seal the side after making the bending is better with the parallelism between the limit of buckling, even make former side and the hem of bending mutually parallel, thereby when carrying out banding processing in the two-fold heat sealing mechanism, the surface that receives the pressfitting effect after the limit of buckling melts is difficult to produce the fold at former side under the surface of the effect of pressfitting force, even make the limit of buckling melt after the effect of pressfitting more difficult side protrusion former side, and then the roughness of the large-size polymer lithium cell after the banding processing has been better.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a two-fold capping device for a large-sized polymer lithium battery according to an embodiment;
fig. 2 is an enlarged schematic view of a portion a of the two-fold capping device for a large-sized polymer lithium battery shown in fig. 1;
fig. 3 is a schematic structural view of another view angle of a two-fold capping device for a large-sized polymer lithium battery according to an embodiment;
fig. 4 is an enlarged schematic view of a portion B of the two-fold capping device for a large-sized polymer lithium battery shown in fig. 3.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In order to better understand the technical scheme and beneficial effects of the present utility model, the following describes the present utility model in further detail with reference to specific embodiments:
as shown in fig. 1 to 4, a two-fold top sealing device 10 for a large-sized polymer lithium battery according to an embodiment includes a pre-folding mechanism 100 and a two-fold heat sealing mechanism 200 sequentially arranged; the pre-folding mechanism 100 comprises an ejector 110, a bottom support 120, a lower pressing piece 130 and a side pressing piece 140, wherein the ejector 110 is movably connected with the bottom support 120, the bottom support 120 is provided with a clearance groove 121, the bottom support 120 is used for supporting a large-size polymer lithium battery, the ejector 110 is used for pushing the large-size polymer lithium battery so as to enable a side to be sealed of the large-size polymer lithium battery to be abutted with the lower pressing piece 130, the lower pressing piece 130 enables the side to be sealed to be bent downwards to form a bent edge, the side pressing piece 140 is provided with a side pressing edge, the side pressing piece 140 enables the bent edge to be bent obliquely, so that the side pressing edge is used for being abutted with the bent edge, and the side pressing edge is used for moving towards a direction approaching or far from the clearance groove 121; the two-fold heat seal mechanism 200 comprises a flattening piece 210, a limiting pressing piece 220, a heat seal bottom plate 230 and a heat seal top plate 240, wherein the limiting pressing piece 220 is connected with the heat seal bottom plate 230, the flattening piece 210 is used for being abutted against a bending edge, the flattening piece 210 moves towards the heat seal bottom plate 230 so as to enable the flattening piece 210 to press a bending edge, the bending edge and an original side of a side to be sealed are mutually parallel to form a parallel edge sealing position to be sealed together, the limiting pressing piece 220 moves towards the flattening piece 210 so as to enable the limiting pressing piece 220 to be abutted against the bending edge arranged in parallel, and the heat seal top plate 240 moves towards the heat seal bottom plate 230 so as to enable the heat seal top plate 240 to be pressed with the heat seal bottom plate 230.
In this embodiment, the pressing member 130 bends the side to be sealed downward to form a bent edge, the side pressing member 140 bends the bent edge obliquely so that the side pressing edge is used for abutting against the bent edge, and the side pressing edge is used for moving in a direction approaching to the clearance groove 121, so that the bent edge bends obliquely into the clearance groove 121, and the position of the bent edge is fixed under the combined action of the side pressing edge and the clearance groove 121. The flattening piece 210 presses the bent edge, so that the bent edge and the original side edge of the side edge to be sealed are mutually parallel to form a parallel sealed edge to be sealed, and the limiting pressing piece 220 is used for being abutted with the bent edge which is arranged in parallel, so that the position of the bent edge which is arranged in parallel is fixed.
In the above two-fold top sealing device 10 for large-size polymer lithium battery, the side to be sealed is bent downwards by the lower pressing piece 130 to form a bent edge, the side pressing piece 140 bends the bent edge obliquely so that the side pressing edge is used for abutting against the bent edge, the side pressing edge is used for moving towards the direction close to the avoidance groove 121, the bent edge bends obliquely and enters into the avoidance groove 121, and the position of the bent edge is fixed under the combined action of the side pressing edge and the avoidance groove 121, so that the side to be sealed is bent; then, the staff places the folded side edge of the large-size polymer lithium battery in the two-fold heat sealing mechanism 200 for edge sealing treatment, the flattening piece 210 presses the folded edge, the folded edge and the original side edge of the side edge to be sealed are mutually parallel to form a parallel edge sealing position to be sealed, the limiting pressing piece 220 is used for being abutted against the parallel folded edge, so that the position of the parallel folded edge is fixed, at the moment, the flattening piece 210 moves towards the direction away from the heat sealing bottom plate 230, the flattening piece 210 is separated from the parallel folded edge, the heat sealing top plate 240 moves towards the heat sealing bottom plate 230, the heat sealing top plate 240 is in lamination arrangement with the heat sealing bottom plate 230, the parallel edge sealing position to be sealed is positioned between the heat sealing top plate 240 and the heat sealing bottom plate 230, so that the heat sealing top plate 240 is abutted against the original side edge, and the heat sealing bottom plate 230 are in lamination arrangement under the combined action of the heat sealing top plate 240 and the heat sealing bottom plate 230, and edge sealing treatment of the large-size polymer lithium battery is completed; in the disassembly and transportation process of the large-size polymer lithium battery, the large-size polymer lithium battery is disassembled and transported along the bottom support 120, so that the bending edge is always positioned in the avoidance groove 121, the avoidance groove 121 plays a constraint role on the bending edge, the bending edge is harder to rebound, the problem that the bending edge is harder to change along with the change of the bending angle in the disassembly and transportation process of the large-size polymer lithium battery due to the fact that the length and the thickness of the side to be sealed of the large-size polymer lithium battery are longer in the prior art is solved, the rebound performance of extension of the side to be sealed is better, the problem that the folded side to be sealed is easier to rebound along with the disassembly and transportation process of the folded side to be sealed is solved, and the problem that the bending angle formed between the original side of the folded side to be sealed and the folded edge is changed along with the rebound of the side to be sealed is solved, namely the problem that the position of the bending edge is harder to change along with the change of the bending angle is solved; because the flattening piece 210 presses the bending edge, the bending edge and the original side edge of the side edge to be sealed are mutually parallel to form a parallel edge sealing part to be sealed together, so that the parallelism between the original side edge of the folded side edge to be sealed and the folded side edge is good, namely, the original side edge and the folded side edge are mutually parallel, when the edge sealing treatment is carried out in the two-fold heat sealing mechanism 200, the folded side edge is difficult to fold on the surface of the original side edge under the action of the pressing force after being melted, even the folded side edge is difficult to laterally protrude from the original side edge under the action of the pressing force after being melted, and the flatness of the sealed side edge of the large-size polymer lithium battery after the edge sealing treatment is good.
As shown in fig. 1, in one embodiment, the ejector 110 includes an ejector driving motor 111 and an ejector seat 112, wherein a power output end of the ejector driving motor 111 is connected to the ejector seat 112, so that the ejector driving motor 111 drives the ejector seat 112 to slide relative to the bottom support 120, the ejector seat 112 is slidably connected to the bottom support 120, and the ejector seat 112 is used for pushing the large-sized polymer lithium battery.
In one embodiment, as shown in fig. 1, the base 120 is further formed with a connection via 122, and the ejector seat 112 is disposed through the connection via 122 and slidably connected to the base 120.
As shown in fig. 1 to 2, in one of the embodiments, the hold-down piece 130 is formed with a hold-down groove 131, and the hold-down groove 131 communicates with the escape groove 121.
As shown in fig. 1 to 2, in one embodiment, the pre-folding mechanism 100 further includes a side pressure fixing seat 150, the side pressure fixing seat 150 is formed with a fixing groove 151, and a portion of the side pressure member 140 is located in the fixing groove 151 and abuts against the side pressure fixing seat 150.
As shown in fig. 3 to 4, in one of the embodiments, the flattening member 210 is provided with a guide slope 211, and the guide slope 211 abuts against the heat seal base plate 230.
As shown in fig. 3 to 4, in one of the embodiments, the heat-seal bottom plate 230 is formed with a mounting connection groove 231, and the flattening member 210 is positioned in the mounting connection groove 231 and abuts against the heat-seal bottom plate 230 so that the guide slope 211 abuts against the groove wall of the mounting connection groove 231.
As shown in fig. 3 to 4, in one of the embodiments, the heat-seal top plate 240 is formed with a heat-seal groove 241, and when the heat-seal top plate 240 is press-fitted with the heat-seal bottom plate 230, the heat-seal groove 241 communicates with the mounting connection groove 231.
As shown in fig. 3 to 4, in one embodiment, the limit pressing piece 220 is formed with a pressing groove 221, and the pressing groove 221 communicates with the avoiding groove 121.
As shown in fig. 3 to 4, in one embodiment, the limiting pressing member 220 is welded with the heat sealing bottom plate 230, so that the structural strength of the two-fold top sealing device 10 for large-size polymer lithium battery is enhanced, and thus the structural stability of the two-fold top sealing device 10 for large-size polymer lithium battery is better.
Compared with the prior art, the utility model has at least the following advantages:
1. because the lower pressing piece 130 bends the side to be sealed downwards to form a bent edge, the side pressing piece 140 bends the bent edge in an inclined manner, so that the side pressing edge is used for abutting against the bent edge, the side pressing edge is used for moving towards the direction close to the avoidance groove 121, the bent edge is bent obliquely into the avoidance groove 121, and the position of the bent edge is fixed under the combined action of the side pressing edge and the avoidance groove 121, so that the side to be sealed is bent; then, the staff places the folded side edge of the large-size polymer lithium battery in the two-fold heat sealing mechanism 200 for edge sealing treatment, the flattening piece 210 presses the folded edge, the folded edge and the original side edge of the side edge to be sealed are mutually parallel to form a parallel edge sealing position to be sealed, the limiting pressing piece 220 is used for being abutted against the parallel folded edge, so that the position of the parallel folded edge is fixed, at the moment, the flattening piece 210 moves towards the direction away from the heat sealing bottom plate 230, the flattening piece 210 is separated from the parallel folded edge, the heat sealing top plate 240 moves towards the heat sealing bottom plate 230, the heat sealing top plate 240 is in lamination arrangement with the heat sealing bottom plate 230, the parallel edge sealing position to be sealed is positioned between the heat sealing top plate 240 and the heat sealing bottom plate 230, so that the heat sealing top plate 240 is abutted against the original side edge, and the heat sealing bottom plate 230 are in lamination arrangement under the combined action of the heat sealing top plate 240 and the heat sealing bottom plate 230, and edge sealing treatment of the large-size polymer lithium battery is completed;
2. in the disassembly and transportation process of the large-size polymer lithium battery, the large-size polymer lithium battery is disassembled and transported along the bottom support 120, so that the bending edge is always positioned in the avoidance groove 121, the avoidance groove 121 plays a constraint role on the bending edge, the bending edge is harder to rebound, the problem that the bending edge is harder to change along with the change of the bending angle in the disassembly and transportation process of the large-size polymer lithium battery due to the fact that the length and the thickness of the side to be sealed of the large-size polymer lithium battery are longer in the prior art is solved, the rebound performance of extension of the side to be sealed is better, the problem that the folded side to be sealed is easier to rebound along with the disassembly and transportation process of the folded side to be sealed is solved, and the problem that the bending angle formed between the original side of the folded side to be sealed and the folded edge is changed along with the rebound of the side to be sealed is solved, namely the problem that the position of the bending edge is harder to change along with the change of the bending angle is solved;
3. because the flattening piece 210 presses the bending edge, the bending edge and the original side edge of the side edge to be sealed are mutually parallel to form a parallel edge sealing part to be sealed together, so that the parallelism between the original side edge of the folded side edge to be sealed and the folded side edge is good, namely, the original side edge and the folded side edge are mutually parallel, when the edge sealing treatment is carried out in the two-fold heat sealing mechanism 200, the folded side edge is difficult to fold on the surface of the original side edge under the action of the pressing force after being melted, even the folded side edge is difficult to laterally protrude from the original side edge under the action of the pressing force after being melted, and the flatness of the sealed side edge of the large-size polymer lithium battery after the edge sealing treatment is good.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A two-fold top sealing device for a large-size polymer lithium battery, comprising: the pre-folding mechanism and the two-folding heat sealing mechanism are sequentially arranged;
the pre-folding mechanism comprises an ejection piece, a bottom support piece, a pressing piece and a side pressing piece, wherein the ejection piece is movably connected with the bottom support piece, a clearance groove is formed in the bottom support piece, the bottom support piece is used for supporting a large-size polymer lithium battery, the ejection piece is used for pushing the large-size polymer lithium battery so that a side to be sealed of the large-size polymer lithium battery is abutted with the pressing piece, the pressing piece enables the side to be sealed to be bent downwards to form a bent edge, the side pressing piece is provided with a side pressing edge, the side pressing piece enables the bent edge to be bent obliquely, the side pressing edge is used for being abutted with the bent edge, and the side pressing edge is used for moving towards a direction approaching to or far from the clearance groove;
the two-fold heat sealing mechanism comprises a flattening piece, a limiting pressing piece, a heat sealing bottom plate and a heat sealing top plate, wherein the limiting pressing piece is connected with the heat sealing bottom plate, the flattening piece is used for being in butt joint with a bending edge, the flattening piece faces to the heat sealing bottom plate to move so that the flattening piece is used for pressing the bending edge, the bending edge and the original side edge of the side edge to be sealed are mutually parallel to form a parallel edge sealing part to be sealed together, the limiting pressing piece faces to the flattening piece to move so that the limiting pressing piece is used for being in butt joint with the bending edge of parallel arrangement, and the heat sealing top plate faces to the heat sealing bottom plate to move so that the heat sealing top plate is in press fit with the heat sealing bottom plate.
2. The bi-fold top sealing device for a large-size polymer lithium battery according to claim 1, wherein the ejection piece comprises an ejection driving motor and an ejection seat, a power output end of the ejection driving motor is connected with the ejection seat, so that the ejection driving motor drives the ejection seat to slide relative to the bottom support piece, the ejection seat is in sliding connection with the bottom support piece, and the ejection seat is used for pushing the large-size polymer lithium battery.
3. The two-fold top sealing device for the large-size polymer lithium battery according to claim 2, wherein the bottom support piece is further formed with a connecting via hole, and the push seat is arranged through the connecting via hole and is in sliding connection with the bottom support piece.
4. The two-fold top sealing device for a large-sized polymer lithium battery according to claim 1, wherein the pressing piece is formed with a pressing groove, and the pressing groove is communicated with the clearance groove.
5. The two-fold top sealing device for the large-size polymer lithium battery according to claim 1, wherein the pre-folding mechanism further comprises a side pressure fixing seat, a fixing groove is formed in the side pressure fixing seat, and a part of the side pressing piece is located in the fixing groove and is abutted to the side pressure fixing seat.
6. The two-fold top sealing device for a large-size polymer lithium battery according to claim 1, wherein the flattening member is provided with a guide slope, and the guide slope abuts against the heat-seal bottom plate.
7. The two-fold top sealing device for large-size polymer lithium battery according to claim 6, wherein the heat-seal bottom plate is formed with a mounting connection groove, and the flattening member is positioned in the mounting connection groove and abuts against the heat-seal bottom plate so that the guide inclined surface abuts against a groove wall of the mounting connection groove.
8. The two-fold top sealing device for large-size polymer lithium battery according to claim 7, wherein the heat-seal top plate is formed with a heat-seal groove, and the heat-seal groove is communicated with the installation connection groove when the heat-seal top plate is pressed with the heat-seal bottom plate.
9. The two-fold capping device for a large-sized polymer lithium battery according to claim 1, wherein the limit pressing piece is formed with a pressing groove, and the pressing groove is communicated with the clearance groove.
10. The two-fold top sealing device for a large-size polymer lithium battery according to claim 1, wherein the limit pressing piece is welded with the heat-seal bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321928249.XU CN220731600U (en) | 2023-07-21 | 2023-07-21 | Two-fold top sealing device for large-size polymer lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321928249.XU CN220731600U (en) | 2023-07-21 | 2023-07-21 | Two-fold top sealing device for large-size polymer lithium battery |
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| CN220731600U true CN220731600U (en) | 2024-04-05 |
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| CN202321928249.XU Active CN220731600U (en) | 2023-07-21 | 2023-07-21 | Two-fold top sealing device for large-size polymer lithium battery |
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