CN220753518U - Battery cell lithium supplementing device - Google Patents
Battery cell lithium supplementing device Download PDFInfo
- Publication number
- CN220753518U CN220753518U CN202322372449.8U CN202322372449U CN220753518U CN 220753518 U CN220753518 U CN 220753518U CN 202322372449 U CN202322372449 U CN 202322372449U CN 220753518 U CN220753518 U CN 220753518U
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- CN
- China
- Prior art keywords
- component
- composite
- battery cell
- lithium
- unreeling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 34
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 230000001502 supplementing effect Effects 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 116
- 230000007246 mechanism Effects 0.000 claims abstract description 72
- OPHUWKNKFYBPDR-UHFFFAOYSA-N copper lithium Chemical compound [Li].[Cu] OPHUWKNKFYBPDR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011248 coating agent Substances 0.000 claims abstract description 30
- 238000000576 coating method Methods 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 238000012216 screening Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 12
- 238000004026 adhesive bonding Methods 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 8
- 238000013329 compounding Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000009469 supplementation Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Primary Cells (AREA)
Abstract
The utility model discloses a battery cell lithium supplementing device which comprises a composite belt forming mechanism, a battery cell feeding mechanism and a coating mechanism, wherein a composite belt output by the composite belt forming mechanism is coated on the periphery of a battery cell output by the battery cell feeding mechanism by the coating mechanism; the composite belt forming mechanism comprises a diaphragm unreeling component, a copper-lithium composite belt unreeling component, a dispensing component, a cold roller rolling composite component and a cutting component, wherein the dispensing component is arranged between the diaphragm unreeling component and the cold roller rolling composite component, the diaphragm unreeling component and the copper-lithium composite belt unreeling component are arranged on the same side, the output ends of the diaphragm unreeling component and the copper-lithium composite belt unreeling component are connected to the input end of the cold roller rolling composite component, and the composite component output by the cold roller rolling composite component is cut by the cutting component to obtain a composite belt; the lithium battery cell supplementing device ensures that no fold bubbles exist on the surface of the composite belt after coating, and improves the cycle data of the battery.
Description
Technical Field
The utility model relates to the technical field of lithium battery preparation, in particular to a battery core lithium supplementing device.
Background
The market is more and more paying attention to the cycle performance and the service life of lithium batteries, and more manufacturers supplement lithium to battery cells. The traditional copper-lithium composite band is coated on the periphery of the battery cell to obtain the battery cell after lithium supplementation, but the copper-lithium composite band and the diaphragm are thin in material, so that the defects of wrinkling, bubbles, loose coating and the like are easily generated in the process of coating the surface of the battery cell.
Disclosure of Invention
Based on the technical problems in the background art, the utility model provides a battery cell lithium supplementing device, which ensures that the surface of a coated composite belt has no wrinkles and bubbles, and improves the cycle data of a battery.
The utility model provides a battery cell lithium supplementing device which comprises a composite belt forming mechanism, a battery cell feeding mechanism and a coating mechanism, wherein a composite belt output by the composite belt forming mechanism is coated on the periphery of a battery cell output by the battery cell feeding mechanism by the coating mechanism; the composite strip forming mechanism comprises a diaphragm unreeling component, a copper-lithium composite strip unreeling component, a dispensing component, a cold roller rolling composite component and a cutting component, wherein the dispensing component is arranged between the diaphragm unreeling component and the cold roller rolling composite component, the diaphragm unreeling component and the copper-lithium composite strip unreeling component are arranged on the same side, the output ends of the diaphragm unreeling component and the copper-lithium composite strip unreeling component are connected to the input end of the cold roller rolling composite component, and the composite component output by the cold roller rolling composite component is cut by the cutting component to obtain the composite strip.
Further, the composite belt forming mechanism further comprises a composite belt deviation rectifying assembly for adjusting the position of the composite belt, and the output end of the composite belt deviation rectifying assembly is connected to the input end of the coating mechanism.
Further, the electric core feeding mechanism comprises an electric core gluing component and an electric core positioning and rectifying component, wherein the electric core enters the electric core positioning and rectifying component for position adjustment after being subjected to surface gluing through the electric core gluing component, and the output end of the electric core positioning and rectifying component is connected to the input end of the coating mechanism.
Further, the battery cell lithium supplementing device further comprises a screening mechanism, and the input end of the screening mechanism is connected to the output end of the coating mechanism.
Further, the battery cell lithium supplementing device further comprises a pre-welding mechanism for welding the battery cell tab and the composite belt, and the input end of the pre-welding mechanism is connected to the output end of the screening mechanism.
Further, a first demagnetizing component is arranged between the diaphragm unreeling component and the cold roller rolling composite component, and a second demagnetizing component is arranged between the copper-lithium composite belt unreeling component and the cold roller rolling composite component.
The battery cell lithium supplementing device provided by the utility model has the advantages that: according to the battery cell lithium supplementing device provided by the structure, the surface of the battery cell is coated with the copper-lithium composite sheet by the battery cell feeding mechanism, then the composite belt and the battery cell negative electrode lug are welded together, single-sided compounding of the copper-lithium composite sheet and the diaphragm is finished before coating, one layer of diaphragm is reduced compared with traditional belt heating compounding, the lithium supplementing effect of a battery is better exerted while material waste is avoided, pollution and damage of the lithium belt can be prevented, the situation that the surface of the composite belt has no folds and bubbles after coating is ensured, and therefore the battery with high capacity is obtained, and the cycle data of the battery is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
the device comprises a 1-composite strip forming mechanism, a 2-battery core feeding mechanism, a 3-coating mechanism, a 4-screening mechanism, a 5-pre-welding mechanism, an 11-diaphragm unreeling assembly, a 12-copper-lithium composite sheet unreeling assembly, a 13-dispensing assembly, a 14-cold roll rolling composite assembly, a 15-cutting assembly, a 16-composite strip deviation correcting assembly, a 17-first demagnetizing assembly, a 18-second demagnetizing assembly, a 21-battery core gluing assembly and a 22-battery core positioning deviation correcting assembly.
Detailed Description
In the following detailed description of the present utility model, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.
As shown in fig. 1, the lithium battery cell supplementing device provided by the utility model comprises a composite band forming mechanism 1, a battery cell feeding mechanism 2 and a coating mechanism 3, wherein the composite band output by the composite band forming mechanism 1 is coated on the periphery of the battery cell output by the battery cell feeding mechanism 2 by the coating mechanism 3;
the composite belt forming mechanism 1 comprises a diaphragm unreeling component 11, a copper-lithium composite sheet unreeling component 12, a dispensing component 13, a cold roller rolling composite component 14 and a cutting component 15, wherein the dispensing component 13 is arranged between the diaphragm unreeling component 11 and the cold roller rolling composite component 14, the diaphragm unreeling component 11 and the copper-lithium composite sheet unreeling component 12 are arranged on the same side, the output ends of the diaphragm unreeling component 12 are connected to the input end of the cold roller rolling composite component 14, and the composite component output by the cold roller rolling composite component 14 is cut by the cutting component 15 to obtain a composite belt.
According to the embodiment, the surface of the battery cell after the hot pressing, which is fed by the battery cell feeding mechanism 2, is coated with a copper-lithium composite sheet, and then the composite belt and the battery cell negative electrode lug are welded together. The membrane coating has the same problem, and after coating, the copper-lithium composite sheet and the membrane and the battery cell cannot form a tight combination effect. Moreover, lithium metal is active, and potential safety hazards such as nitriding and ignition are easy to generate under the condition of high temperature.
Therefore, the embodiment prevents the lithium belt from being polluted and damaged, firstly, the single-sided compounding of the copper-lithium composite sheet and the diaphragm is finished before cladding, and specifically: the diaphragm unreeling assembly 11 and the copper-lithium composite sheet unreeling assembly 12 unreel, the first demagnetizing assembly 17 and the second demagnetizing assembly 18 remove iron and magnetism from the diaphragm and the copper-lithium composite sheet respectively, then the glue dispensing assembly 13 is used for dispensing glue on the copper-lithium composite sheet and the cold roller rolling composite assembly 14 are compounded, the copper-lithium composite sheet and the diaphragm are tightly combined together, so that the strength of the copper-lithium composite sheet and the diaphragm is improved, then the copper-lithium composite sheet and the diaphragm are cut into sheet materials, and the sheet materials are subsequently used as a composite belt to be coated on the periphery of an electric core. And correspondingly, gluing the surface of the battery cell to ensure the coating and combining effects of the subsequent composite sheet and the battery cell. The coating mechanism 3 is controlled by a two-axis module, and drives the rubber coating roller to coat according to a specific track of the appearance of the battery cell. The situation that the surface of the coated composite belt is free of wrinkles and bubbles is guaranteed, so that a high-capacity battery is obtained, and the cycle data of the battery are improved.
In the embodiment, the copper-lithium composite sheet and the diaphragm are subjected to single-sided compounding, so that one layer of diaphragm is reduced compared with the traditional belt heating compounding, the waste of materials is avoided, and the lithium supplementing effect of the battery is better exerted. In addition, considering that lithium metal is relatively active, in the compounding process, the embodiment adopts cold roller rolling (the cold roller rolling compound assembly 14) for compounding, so that potential safety hazards such as nitriding and firing of lithium strips are prevented from being generated under the high-temperature condition.
In this embodiment, the composite strip forming mechanism 1 further includes a composite strip deviation rectifying component 16 for adjusting the position of the composite strip, the output end of the composite strip deviation rectifying component 16 is connected to the input end of the coating mechanism 3, and the position of the composite strip can be adjusted by setting the composite strip deviation rectifying component 16 so as to ensure the coating alignment degree of the composite strip and the battery cell.
The cell feeding mechanism 2 comprises a cell gluing component 21 and a cell positioning and rectifying component 22, a cell enters the cell positioning and rectifying component 22 for position adjustment after being glued by the cell gluing component 21, the output end of the cell positioning and rectifying component 22 is connected to the input end of the coating mechanism 3, the cell is glued by the cell gluing component 21 before coating, the tight combination of the cell and a composite belt is ensured, the position of the cell after glue dispensing can be adjusted by the setting of the cell positioning and rectifying component 22, and the coating alignment degree of the composite belt and the cell is ensured.
In this embodiment, the battery cell lithium supplementing device further includes a screening mechanism 4 and a pre-welding mechanism 5 for welding the battery cell tab and the composite strip, wherein an input end of the screening mechanism 4 is connected to an output end of the cladding mechanism 3, and an input end of the pre-welding mechanism 5 is connected to an output end of the screening mechanism 4. The screening mechanism 4 can adopt a CCD camera to detect whether the surface flatness and the composite belt are aligned with the battery core or not, the detected coated battery core is conveyed to the pre-welding mechanism 5 to weld the negative electrode lug of the battery core and the current collector of the composite belt together to obtain the battery core after lithium supplementation, the detected unqualified coated battery core is removed by a manipulator, the qualification rate of the battery core after lithium supplementation is improved, and the defect that the qualification rate of the battery core is low after lithium supplementation due to the fact that unqualified products are conveyed to subsequent procedures is avoided.
The working process comprises the following steps: the diaphragm is discharged through the diaphragm unreeling component 11, the copper-lithium composite sheet is discharged through the copper-lithium composite sheet unreeling component 12, the dispensing component 13 is used for dispensing glue on the surface, close to the diaphragm, of the copper-lithium composite sheet, the diaphragm and the copper-lithium composite sheet after dispensing glue enter the cold roller rolling composite component 14, the diaphragm and the copper-lithium composite sheet are compounded through the pressure rolling action of the cold roller rolling composite component 14, the sheet is cut into sheet materials through the cutting component 15, the sheet materials are subsequently used as composite strips to be coated on the periphery of the battery core, the battery core is synchronously fed after dispensing glue through the battery core feeding mechanism, the composite strips are coated on the periphery of the battery core through the coating mechanism 3, then unqualified products are removed through the screening mechanism 14, and qualified products are input into the pre-welding mechanism 5 to weld the negative electrode lugs of the battery core and the current collectors of the composite strips together, and the battery core after lithium supplementing is obtained.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The battery cell lithium supplementing device is characterized by comprising a composite belt forming mechanism (1), a battery cell feeding mechanism (2) and a coating mechanism (3), wherein the composite belt output by the composite belt forming mechanism (1) is coated on the periphery of the battery cell output by the battery cell feeding mechanism (2) through the coating mechanism (3);
the composite strip forming mechanism (1) comprises a diaphragm unreeling component (11), a copper-lithium composite sheet unreeling component (12), a glue dispensing component (13), a cold roller rolling composite component (14) and a cutting component (15), wherein the glue dispensing component (13) is arranged between the diaphragm unreeling component (11) and the cold roller rolling composite component (14), the diaphragm unreeling component (11) and the copper-lithium composite sheet unreeling component (12) are arranged on the same side, the output ends of the diaphragm unreeling component and the copper-lithium composite sheet unreeling component are connected to the input end of the cold roller rolling composite component (14), and the composite component output by the cold roller rolling composite component (14) is cut by the cutting component (15) to obtain a composite strip.
2. The cell lithium supplementing device according to claim 1, wherein the composite tape forming mechanism (1) further comprises a composite tape correcting component (16) for adjusting the position of the composite tape, and an output end of the composite tape correcting component (16) is connected to an input end of the coating mechanism (3).
3. The battery cell lithium supplementing device according to claim 2, wherein the battery cell feeding mechanism (2) comprises a battery cell gluing component (21) and a battery cell positioning and rectifying component (22), the battery cell enters the battery cell positioning and rectifying component (22) for position adjustment after being subjected to surface gluing by the battery cell gluing component (21), and the output end of the battery cell positioning and rectifying component (22) is connected to the input end of the coating mechanism (3).
4. The cell lithium supplementing device according to claim 1, further comprising a screening mechanism (4), an input of the screening mechanism (4) being connected to an output of the coating mechanism (3).
5. The battery cell lithium supplementing device according to claim 4, further comprising a pre-welding mechanism (5) for welding the battery cell tab with the composite tape, wherein an input end of the pre-welding mechanism (5) is connected to an output end of the screening mechanism (4).
6. The battery cell lithium supplementing device according to claim 1, wherein a first demagnetizing component (17) is arranged between the diaphragm unreeling component (11) and the cold roller rolling composite component (14), and a second demagnetizing component (18) is arranged between the copper-lithium composite sheet unreeling component (12) and the cold roller rolling composite component (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322372449.8U CN220753518U (en) | 2023-08-31 | 2023-08-31 | Battery cell lithium supplementing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322372449.8U CN220753518U (en) | 2023-08-31 | 2023-08-31 | Battery cell lithium supplementing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220753518U true CN220753518U (en) | 2024-04-09 |
Family
ID=90554341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322372449.8U Active CN220753518U (en) | 2023-08-31 | 2023-08-31 | Battery cell lithium supplementing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220753518U (en) |
-
2023
- 2023-08-31 CN CN202322372449.8U patent/CN220753518U/en active Active
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