CN111483166A - Lithium battery pole piece hot rolling device - Google Patents
Lithium battery pole piece hot rolling device Download PDFInfo
- Publication number
- CN111483166A CN111483166A CN202010333335.0A CN202010333335A CN111483166A CN 111483166 A CN111483166 A CN 111483166A CN 202010333335 A CN202010333335 A CN 202010333335A CN 111483166 A CN111483166 A CN 111483166A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- assembly
- heating
- lithium battery
- conveying
- 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.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 38
- 238000005098 hot rolling Methods 0.000 title claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 100
- 238000005096 rolling process Methods 0.000 claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/34—Heating or cooling presses or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/005—Roll constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0433—Molding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to the technical field of lithium battery pole piece processing, and discloses a hot rolling device for a lithium battery pole piece. The lithium battery pole piece hot rolling device comprises a heating assembly, a rolling assembly and a conveying assembly, wherein the heating assembly is used for heating a pole piece of a lithium battery; the rolling assembly is used for rolling the heated pole piece so that the thickness of the pole piece meets the preset thickness; the conveying assembly sequentially passes through the heating assembly and the rolling assembly and is used for conveying the pole pieces to be rolled to the heating assembly and conveying the pole pieces heated by the heating assembly to the rolling assembly. According to the invention, the heating assembly and the rolling assembly are arranged into two independent modules, so that the pole piece is heated by the heating assembly before the rolling assembly rolls, the advantages of high heating speed and more sufficient heating are achieved, the pole piece is heated in the heating assembly for a longer time, the heating effect is better, the structure of the rolling assembly is simplified, and the working efficiency of hot rolling of the pole piece is improved effectively on the whole.
Description
Technical Field
The invention relates to the technical field of lithium battery pole piece processing, in particular to a hot rolling device for a lithium battery pole piece.
Background
As a common lithium battery pole piece rolling technology, hot rolling can improve the plasticity of the pole piece, improve the micro-morphology of the pole piece and improve the performance of the lithium battery.
In the prior art, a mode of injecting heat conduction oil into a steel roller is generally adopted to heat the steel roller, a pole piece is heated when passing through the steel roller, and is rolled at high temperature, so that a hot rolling effect is achieved. This process has the following disadvantages: 1. the process of heating or cooling the steel roller to the specified temperature is slow, and needs about 12 hours, so that the working efficiency is influenced; 2. the pole piece has small heating area, short time and limited heating effect.
Therefore, a hot rolling device for lithium battery pole pieces is urgently needed to solve the problems.
Disclosure of Invention
Based on the above, the invention aims to provide the lithium battery pole piece hot rolling device which has the advantages of high heating speed, uniform heating and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a lithium battery pole piece hot rolling device, includes:
the heating assembly is used for heating the pole piece of the lithium battery;
the rolling assembly is used for rolling the heated pole piece so that the thickness of the pole piece meets the preset thickness;
and the conveying assembly sequentially passes through the heating assembly and the rolling assembly and is used for conveying the pole piece to be rolled to the heating assembly and conveying the pole piece heated by the heating assembly to the rolling assembly.
As a preferable scheme of the lithium battery pole piece hot rolling device, the heating assembly comprises a plurality of heating pipes arranged along the conveying direction of the conveying assembly, and the heating pipes are parallel to the plane of the conveying direction.
As a preferred scheme of the lithium battery pole piece hot rolling device, the heating pipe is perpendicular to the conveying direction.
As a preferred scheme of the lithium battery pole piece hot rolling device, the heating pipes are arranged above and below the plane in the conveying direction.
As a preferred scheme of the lithium battery pole piece hot rolling device, the heating pipe is an infrared heating pipe.
As a preferred scheme of the lithium battery pole piece hot rolling device, the heating assembly further comprises a temperature measuring instrument, and the temperature measuring instrument is arranged close to the pole piece.
As a preferred scheme of the lithium battery pole piece hot rolling device, the heating pipe and the temperature measuring instrument are both arranged in a heat insulation box, and the conveying assembly penetrates through the heat insulation box.
As a preferred scheme of the lithium battery pole piece hot rolling device, the rolling assembly comprises two rolling rollers which are arranged in parallel at intervals along the thickness direction of the pole piece, the rolling rollers are solid steel rollers, and the heated pole piece penetrates through the two rolling rollers.
As a preferred scheme of the lithium battery pole piece hot rolling device, the distance between the two rolling rollers is adjustable.
As a preferred scheme of the lithium battery pole piece hot rolling device, the conveying assembly comprises a plurality of conveying rollers which are arranged in parallel at intervals, the pole pieces in the heating assembly are wound on the conveying rollers and distributed in an S shape, and the pole pieces after being rolled by the rolling assembly are wound on the conveying rollers and distributed in a Z shape.
The invention has the beneficial effects that: set up to two independent modules through heating element and roll-in subassembly, make the pole piece earlier through heating element's heating before the roll-in subassembly roll-in, than the heating method of injecting the conduction oil in the steel roll is inside among the prior art, it is fast to have a rate of heating, the more abundant advantage of heating, make the pole piece in heating element the time of being heated longer, the advantage such as intensification effect is better of being heated, the structure of roll-in subassembly has still been simplified simultaneously, the work efficiency of the hot roll-in of pole piece has been improved effectively on the whole.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic diagram of a lithium battery pole piece hot rolling device provided in an embodiment of the present invention.
In the figure:
100-pole piece;
1-a heating assembly; 11-heating tube; 12-a temperature measuring instrument; 13-a heat insulation box; 14-a mounting plate;
21-a roll-in roller;
31-conveying roller.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a lithium battery pole piece hot rolling device, which includes a heating assembly 1, a rolling assembly and a conveying assembly, wherein the heating assembly 1 is used for heating a pole piece 100 of a lithium battery; the rolling assembly is used for rolling the heated pole piece 100 so that the thickness of the pole piece 100 meets the preset thickness; the conveying assembly sequentially passes through the heating assembly 1 and the rolling assembly and is used for conveying the pole piece 100 to be rolled to the heating assembly 1 and conveying the pole piece 100 heated by the heating assembly 1 to the rolling assembly.
Set up to two independent modules through heating element 1 and roll-in subassembly, make pole piece 100 earlier through heating element 1's heating before the roll-in subassembly roll-in, than the heating method of injecting the conduction oil in the steel roll is inside among the prior art, it is fast to have a rate of heating, the more abundant advantage of heating, make pole piece 100 the time of being heated longer in heating element 1, the advantage such as intensification effect is better of being heated, the structure of roll-in subassembly has still been simplified simultaneously, the work efficiency of pole piece 100 hot roll-in has been improved effectively in the whole.
Specifically, the heating assembly 1 comprises a plurality of heating tubes 11 for heating the pole pieces 100; the heating pipes 11 are arranged along the conveying direction of the conveying assembly, so that the pole piece 100 can be heated by the heating pipes 11 in the process of passing through the heating assembly 1, and the heating time of the pole piece 100 by the heating pipes 11 is ensured; in addition, the heating pipe 11 is arranged parallel to the plane of the conveying direction, so that the heating pipe 11 heats the surface of the pole piece 100, and the heating area of the pole piece 100 is effectively increased.
Furthermore, the heating pipe 11 is arranged perpendicular to the conveying direction, so that the surfaces of the pole pieces 100 passing through the same position are heated by the same heating pipe 11, which is beneficial to ensuring that the pole pieces 100 are heated more uniformly; meanwhile, the length of the heating pipe 11 is greater than the width of the pole piece 100, which is beneficial to ensuring that the pole piece 100 is heated more sufficiently, especially the two sides of the pole piece 100 in the width direction are heated more sufficiently.
Preferably, in order to further increase the heating area of the pole piece 100, the heating pipes 11 arranged in the above manner are arranged above and below the plane of the conveying direction, so that both the upper and lower surfaces of the pole piece 100 can be sufficiently heated by the heating pipes 11, and the heating area and the heating effect of the pole piece 100 are effectively increased. Further preferably, the heating pipes 11 above and below the plane of the conveying direction are symmetrically arranged, so that the heat collection of the upper surface and the lower surface of the pole piece 100 is more uniform.
Optionally, the heating assembly 1 further includes a temperature measuring instrument 12, and the temperature measuring instrument 12 is disposed near the pole piece 100 and is used for detecting the temperature of the pole piece 100; specifically, a plurality of temperature detectors 12 are arranged, and the plurality of temperature detectors 12 are arranged between the plurality of heating pipes 11 at intervals and used for measuring the temperature of the pole piece 100 at different positions, so that the measured data can more accurately represent the heating condition of the pole piece 100.
In this embodiment, the heating pipe 11 is an infrared heating pipe, which has the advantages of convenient temperature adjustment, fast response, high efficiency, etc.; the thermometer 12 may be selected from an infrared temperature sensor and the like. Specifically, the infrared heating tube and the infrared temperature sensor can be obtained by outsourcing, and the working principle and the connection mode thereof are also the prior art, and are not described herein again.
In order to ensure the effective utilization of the heat of the heating pipe 11, the heating assembly 1 further comprises a heat insulation box 13, two mounting plates 14 are arranged in the heat insulation box 13 at intervals in parallel along the conveying direction, and the conveying assembly penetrates through the two mounting plates 14 in the heat insulation box 13. The heating pipe 11 is disposed on the mounting plates 14 in the heat insulation box 13, and it should be noted that only one of the mounting plates 14 is provided with the temperature measuring instrument 12, and in this embodiment, the mounting plate 14 above the pole piece 100 is provided with the temperature measuring instrument 12 upward.
Further, the rolling assembly comprises two rolling rollers 21 arranged in parallel along the thickness direction of the pole piece 100 at intervals, the heated pole piece 100 passes through the two rolling rollers 21, and the rolling rollers 21 roll the heated pole piece 100 through relative rotation so as to roll the thickness of the pole piece 100 to a preset thickness; in order to enable the lithium battery pole piece hot rolling device to roll out pole pieces 100 with different preset thicknesses, the distance between the two rolling rollers 21 is adjustable, the specific adjustment mode is the prior art, and details are not repeated herein.
It is worth to be noted that, the roll pressing roller 21 in the embodiment is a solid steel roller, and compared with a hollow steel roller in the prior art, the solid steel roller has a simple structure and strong deformation resistance, and can reduce the equipment maintenance frequency caused by the deformation of the roll pressing roller 21, effectively reduce the equipment maintenance cost, and improve the working efficiency.
In this embodiment, the conveying assembly includes a plurality of conveying rollers 31 arranged in parallel at intervals, and the conveying rollers 31 are rotatably arranged to convey the pole piece 100. Preferably, the pole pieces 100 in the heating assembly 1 are wound on the conveying roller 31 and distributed in an S shape, which is beneficial to increasing the length of the pole pieces 100 in the heating assembly 1, and further increasing the heated area of the pole pieces 100, so that the heated effect of the pole pieces 100 is better; the rolled pole piece 100 of the rolling assembly is distributed in a Z shape on the conveying roller 31 to ensure a certain tension force, which is beneficial to the subsequent processing of the rolled pole piece 100.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. The utility model provides a lithium battery pole piece hot rolling device which characterized in that includes:
the heating assembly (1) is used for heating a pole piece (100) of the lithium battery;
the rolling assembly is used for rolling the heated pole piece (100) so that the thickness of the pole piece (100) meets a preset thickness;
the conveying assembly sequentially passes through the heating assembly (1) and the rolling assembly and is used for conveying the pole piece (100) to be rolled to the heating assembly (1) and conveying the pole piece (100) heated by the heating assembly (1) to the rolling assembly.
2. The lithium battery pole piece hot rolling device as claimed in claim 1, wherein the heating assembly (1) comprises a plurality of heating tubes (11) arranged along the conveying direction of the conveying assembly, the heating tubes (11) being parallel to the plane of the conveying direction.
3. The lithium battery pole piece hot rolling device as claimed in claim 2, wherein the heating tube (11) is arranged perpendicular to the conveying direction.
4. The lithium battery pole piece hot rolling device as claimed in claim 2, wherein the heating pipes (11) are arranged above and below the plane of the conveying direction.
5. The lithium battery pole piece hot rolling device as claimed in claim 2, wherein the heating tube (11) is an infrared heating tube.
6. The lithium battery pole piece hot rolling device according to claim 2, wherein the heating assembly (1) further comprises a temperature measuring instrument (12), and the temperature measuring instrument (12) is arranged close to the pole piece (100).
7. The lithium battery pole piece hot rolling device as claimed in claim 6, wherein the heating pipe (11) and the temperature measuring instrument (12) are both arranged in a heat insulation box (13), and the conveying assembly is arranged through the heat insulation box (13).
8. The lithium battery pole piece hot rolling device as claimed in claim 1, wherein the rolling assembly comprises two rolling rollers (21) arranged in parallel and at intervals along the thickness direction of the pole piece (100), the rolling rollers (21) are solid steel rollers, and the heated pole piece (100) passes through the two rolling rollers (21).
9. The lithium battery pole piece hot rolling device as claimed in claim 8, wherein the distance between the two rolling rollers (21) is adjustable.
10. The lithium battery pole piece hot rolling device according to any one of claims 1 to 9, wherein the conveying assembly comprises a plurality of conveying rollers (31) arranged in parallel at intervals, the pole pieces (100) in the heating assembly (1) are wound on the conveying rollers (31) and distributed in an S shape, and the pole pieces (100) after being rolled by the rolling assembly are wound on the conveying rollers (31) and distributed in a Z shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333335.0A CN111483166A (en) | 2020-04-24 | 2020-04-24 | Lithium battery pole piece hot rolling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333335.0A CN111483166A (en) | 2020-04-24 | 2020-04-24 | Lithium battery pole piece hot rolling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111483166A true CN111483166A (en) | 2020-08-04 |
Family
ID=71811851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010333335.0A Pending CN111483166A (en) | 2020-04-24 | 2020-04-24 | Lithium battery pole piece hot rolling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111483166A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112802985A (en) * | 2020-12-21 | 2021-05-14 | 深圳市泽诚自动化设备有限公司 | Lithium battery pole piece film pressing device and method |
| WO2024145789A1 (en) * | 2023-01-03 | 2024-07-11 | 宁德时代新能源科技股份有限公司 | Calendering device, electrode processing apparatus, and battery processing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877397A (en) * | 2009-06-24 | 2010-11-03 | 宁波维科电池有限公司 | Continuous rolling process for lithium-ion battery electrode and device thereof |
| JP5717913B1 (en) * | 2014-12-11 | 2015-05-13 | 株式会社日立パワーソリューションズ | Thickness gauge and roll press machine provided with the thickness gauge |
| CN105521993A (en) * | 2016-02-02 | 2016-04-27 | 佛山市金银河智能装备股份有限公司 | Steam heating type roller press |
| CN206961939U (en) * | 2017-04-30 | 2018-02-02 | 南京国轩电池有限公司 | A kind of rolling pole piece of lithium ion battery system |
| CN208466893U (en) * | 2018-03-28 | 2019-02-05 | 浙江衡远新能源科技有限公司 | A kind of flattening device of electrodes of lithium-ion batteries |
-
2020
- 2020-04-24 CN CN202010333335.0A patent/CN111483166A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877397A (en) * | 2009-06-24 | 2010-11-03 | 宁波维科电池有限公司 | Continuous rolling process for lithium-ion battery electrode and device thereof |
| JP5717913B1 (en) * | 2014-12-11 | 2015-05-13 | 株式会社日立パワーソリューションズ | Thickness gauge and roll press machine provided with the thickness gauge |
| CN105521993A (en) * | 2016-02-02 | 2016-04-27 | 佛山市金银河智能装备股份有限公司 | Steam heating type roller press |
| CN206961939U (en) * | 2017-04-30 | 2018-02-02 | 南京国轩电池有限公司 | A kind of rolling pole piece of lithium ion battery system |
| CN208466893U (en) * | 2018-03-28 | 2019-02-05 | 浙江衡远新能源科技有限公司 | A kind of flattening device of electrodes of lithium-ion batteries |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112802985A (en) * | 2020-12-21 | 2021-05-14 | 深圳市泽诚自动化设备有限公司 | Lithium battery pole piece film pressing device and method |
| CN112802985B (en) * | 2020-12-21 | 2024-05-14 | 深圳市泽诚自动化设备有限公司 | Lithium battery pole piece film pressing device and method |
| WO2024145789A1 (en) * | 2023-01-03 | 2024-07-11 | 宁德时代新能源科技股份有限公司 | Calendering device, electrode processing apparatus, and battery processing apparatus |
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Application publication date: 20200804 |
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