CN100429810C - Cell polar-piece coating continuous-rolling system - Google Patents
Cell polar-piece coating continuous-rolling system Download PDFInfo
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- CN100429810C CN100429810C CNB200610066044XA CN200610066044A CN100429810C CN 100429810 C CN100429810 C CN 100429810C CN B200610066044X A CNB200610066044X A CN B200610066044XA CN 200610066044 A CN200610066044 A CN 200610066044A CN 100429810 C CN100429810 C CN 100429810C
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- battery pole
- pole piece
- coating
- die extrusion
- rolling
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- 238000005096 rolling process Methods 0.000 title claims abstract description 42
- 239000011248 coating agent Substances 0.000 title claims abstract description 37
- 238000000576 coating method Methods 0.000 title claims abstract description 37
- 238000001035 drying Methods 0.000 claims abstract description 21
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005339 levitation Methods 0.000 claims 2
- 230000004888 barrier function Effects 0.000 claims 1
- 238000007765 extrusion coating Methods 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004804 winding Methods 0.000 abstract description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011149 active material Substances 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 238000007602 hot air drying Methods 0.000 abstract description 3
- 239000011247 coating layer Substances 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 208000003643 Callosities Diseases 0.000 description 2
- 206010020649 Hyperkeratosis Diseases 0.000 description 2
- 241000209149 Zea Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 229910052987 metal hydride Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000126 substance 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
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- Battery Electrode And Active Subsutance (AREA)
Abstract
本发明公开了属于电池极片制造设备范围的一种电池极片涂覆连轧系统。该电池极片涂覆连轧系统由第一部分为双面缝模挤压涂覆机、第二部分为电池极片轧机和第三部分为连续分条机三个部分，分别通过张力传感器连接成锂电池极片活性物质的涂覆、滚压和分条的连续作业系统。密封涂覆箱安装在双面缝模挤压涂覆机的中间位置。电池极片集流体经过缝模挤压涂覆，三道烘干箱，然后经过张力传感器直接进入轧机滚压和分条机分条收卷。从而生产效率提高两倍以上，涂覆层里外同时加热，便于潮湿气体顺利排出，解决了热风烘干造成的先外后里的烘干缺陷，而且节省50%能源、设备长度也缩短50%。通过涂覆连轧使电池极片能够带温滚压，提高电池极片制造精度。
The invention discloses a battery pole piece coating continuous rolling system belonging to the scope of battery pole piece manufacturing equipment. The battery pole piece coating continuous rolling system consists of three parts: the first part is a double-sided slot die extrusion coating machine, the second part is a battery pole piece rolling mill, and the third part is a continuous slitting machine, which are respectively connected by tension sensors. A continuous operation system for coating, rolling and slitting of active materials for lithium battery pole pieces. The seal coating box is installed in the middle of the double-sided slot die extrusion coating machine. The current collector of the battery pole piece is squeezed and coated by slot die, three drying ovens, and then directly enters the rolling mill for rolling and slitting machine for slitting and winding through the tension sensor. As a result, the production efficiency is increased by more than two times, and the inside and outside of the coating layer are heated at the same time, which facilitates the smooth discharge of humid gas, which solves the problem of drying from the outside to the inside caused by hot air drying, and saves 50% of energy and shortens the length of the equipment by 50%. . Through coating and continuous rolling, the battery pole piece can be rolled at temperature to improve the manufacturing accuracy of the battery pole piece.
Description
技术领域 technical field
本发明属于电池极片制造设备范围，特别涉及一种电池极片涂覆连轧系统。The invention belongs to the scope of battery pole piece manufacturing equipment, in particular to a battery pole piece coating continuous rolling system.
背景技术 Background technique
由于石化能源危机和环境污染的原因，镍氢、锂离子、锂聚合物、锌空燃料电池、太阳能电池等新型能源及储能方式迅速发展。因此镍氢、锂离子、锌空燃料、铝空燃料、氢空燃料等电池的极片制造设备的需求也日趋攀升，尤其是电池极片涂覆连轧设备的需求更为迫切。目前，进口或国产的电池极片涂覆、轧制设备均是涂覆、轧制、分条三段单机作业，而且涂覆机为单面或逐次双面水平转移式涂覆、热风烘干法。该设备占地面积大、能耗高、效率低，经常出现气泡、气孔、鸡眼、龟裂等极片质量问题，而且不能形成自动化生产线。Due to the petrochemical energy crisis and environmental pollution, new energy sources and energy storage methods such as nickel metal hydride, lithium ions, lithium polymers, zinc-air fuel cells, and solar cells are developing rapidly. Therefore, the demand for pole piece manufacturing equipment for batteries such as nickel-metal hydride, lithium-ion, zinc-air fuel, aluminum-air fuel, and hydrogen-air fuel is also increasing, especially the demand for battery pole piece coating continuous rolling equipment is more urgent. At present, imported or domestic battery pole piece coating and rolling equipment are all single-machine operations in three stages of coating, rolling, and slitting, and the coating machine is single-sided or double-sided horizontal transfer coating, hot air drying Law. The equipment occupies a large area, has high energy consumption, and low efficiency. Pole quality problems such as bubbles, pores, corns, and cracks often occur, and it cannot form an automated production line.
发明内容 Contents of the invention
本发明的目的是提供用于锂离子、锂聚合物电池的一种电池极片涂覆连轧系统，其特征在于：所述电池极片涂覆连轧系统分三个部分，第一部分为双面缝模挤压涂覆机22，第二部分为电池极片轧机15和第三部分为连续分条机16；第一张力传感器23安装在第一部分双面缝模挤压涂覆机22和第二部分电池极片轧机15之间；第二张力传感器24安装在第二部分电池极片轧机15和第三部分连续分条机16之间；密封涂覆箱1安装在双面缝模挤压涂覆机22的中间位置，密封涂覆箱1内安装着恒张力自动纠偏放卷装置2以及第一缝模挤压涂覆头4和第二缝模挤压涂覆头10，第一烘干箱7上部设有第一排风孔8，内部安装红外发生元件5、热风悬浮装置6以及旋转纠偏导辊9和托辊11，第二烘干箱14上部设有排风孔8，内部安装红外发生元件5、热风悬浮装置6以及旋转纠偏导辊9，第三烘干箱20内部设有第二排风孔13，安装红外发生元件5、托辊11、旋转纠偏导辊9和固定隔板17；电池极片集流体3经过恒张力自动纠偏放卷装置2，沿途经托辊11、旋转纠偏导辊9，经过缝模挤压涂覆头4和10，电池极片的活性物质均匀地涂覆在电池极片集流体3的两面，再经过第一烘干箱7、第二烘干箱14和第三烘干箱20制成带有温度的电池极片，带有温度的电池极片经过张力传感器23直接进入电池极片轧机15滚压，滚压后的电池极片经过张力传感器24直接进入连续分条机16进行分条收卷；电气柜21放置在双面缝模挤压涂覆机22的左下端，双面缝模挤压涂覆机22下面设置支撑腿18。系统以第一部分的涂覆速度为基准，通过张力传感器23控制电池极片轧机15的滚压速度，通过张力传感器24控制连续分条机16分条收卷速度。The object of the present invention is to provide a battery pole piece coating continuous rolling system for lithium ion and lithium polymer batteries, which is characterized in that: the battery pole piece coating continuous rolling system is divided into three parts, the first part is double Surface slot die extrusion coating machine 22, the second part is the battery pole sheet rolling mill 15 and the third part is the continuous slitting machine 16; the first tension sensor 23 is installed in the first part double-sided slot die extrusion coating machine 22 and Between the second part of the battery pole piece rolling mill 15; the second tension sensor 24 is installed between the second part of the battery pole piece rolling mill 15 and the third part of the continuous slitting machine 16; the sealing coating box 1 is installed on the double-sided slot die extrusion In the middle position of the pressure coating machine 22, the constant tension automatic deviation correction unwinding device 2 and the first slot die extrusion coating head 4 and the second slot die extrusion coating head 10 are installed in the sealed coating box 1. The upper part of the drying box 7 is provided with a first air exhaust hole 8, and an infrared generating element 5, a hot air suspension device 6, a rotating deviation correction guide roller 9 and a supporting roller 11 are installed inside, and the upper part of the second drying box 14 is provided with an air exhaust hole 8. The infrared generating element 5, the hot air suspension device 6 and the rotating deviation correcting guide roller 9 are installed inside, the third drying box 20 is provided with a second exhaust hole 13, and the infrared generating element 5, the supporting roller 11, the rotating deviation correcting guide roller 9 and the infrared generating element 5 are installed. The separator 17 is fixed; the current collector 3 of the battery pole piece passes through the constant tension automatic deviation correction and unwinding device 2, passes through the idler roller 11, the rotating deviation correction guide roller 9 along the way, and squeezes the coating heads 4 and 10 through the slot die to ensure the activity of the battery pole piece. The substance is evenly coated on both sides of the battery pole piece current collector 3, and then passed through the first drying box 7, the second drying box 14 and the third drying box 20 to make a battery pole piece with temperature. The battery pole pieces pass through the tension sensor 23 and directly enter the battery pole piece rolling machine 15 for rolling, and the rolled battery pole pieces pass through the tension sensor 24 and directly enter the continuous slitting machine 16 for slitting and winding; the electrical cabinet 21 is placed in the double-sided seam The lower left end of the die extrusion coating machine 22, the support leg 18 is set below the double-sided slot die extrusion coating machine 22. Based on the coating speed of the first part, the system controls the rolling speed of the battery pole piece rolling mill 15 through the tension sensor 23, and controls the slitting and winding speed of the continuous slitting machine 16 through the tension sensor 24.
本发明的有益效果：一是通过带状集流体水平运动实现了电池极片正反两面涂覆一次成型及电池极片的涂覆连轧，生产效率提高两倍以上；二是活性物质的浆料直接挤压涂覆在集流体的正反两面，而且一次成型，避免了转移涂覆中电池极片张力振荡不稳、零部件积累误差大等问题，提高了电池极片的涂覆均匀度，与此同时还可以在线调整活性物质的涂覆厚度；三是红外加热使涂覆层里外同时加热，便于潮湿气体顺利排出，不仅解决了热风烘干造成的先外后里的烘干缺陷，如气泡、气孔、鸡眼、龟裂等极片质量问题，而且节省30～50％能源；四是通过涂覆连轧使设备长度缩短了50％，大大地节省了占用空间；五是通过涂覆连轧使电池极片能够带温滚压，减小了电池极片的变形抗力和电池极片滚压后的厚度反弹量。The beneficial effects of the present invention are as follows: firstly, through the horizontal movement of the strip-shaped current collector, the one-time coating of the front and back sides of the battery pole piece and the continuous rolling of the battery pole piece are realized, and the production efficiency is increased by more than two times; The material is directly extruded and coated on the front and back sides of the current collector, and it is formed at one time, which avoids the problems of unstable tension oscillation of the battery pole piece and large accumulation errors of parts during the transfer coating, and improves the coating uniformity of the battery pole piece At the same time, the coating thickness of the active material can be adjusted online; the third is infrared heating to heat the inside and outside of the coating layer at the same time, which is convenient for the smooth discharge of moist gas, which not only solves the drying defect caused by hot air drying. , such as air bubbles, pores, corns, cracks and other pole piece quality problems, and save 30-50% of energy; Fourth, the equipment length is shortened by 50% through coating and continuous rolling, which greatly saves the occupied space; Fifth, through coating Covering and continuous rolling enables the battery pole piece to be rolled at temperature, which reduces the deformation resistance of the battery pole piece and the thickness rebound of the battery pole piece after rolling.
附图说明 Description of drawings
图1为电池极片涂覆连轧系统的结构示意图。Figure 1 is a schematic structural view of a continuous rolling system for battery pole piece coating.
具体实施方式 Detailed ways
本发明提供了用于锂电池极片的活性物质的涂覆、轧制的一种电池极片涂覆连轧系统。在图1所示的电池极片涂覆连轧系统的结构示意图中，第一张力传感器23安装在第一部分双面缝模挤压涂覆机22和第二部分电池极片轧机15之间；第二张力传感器24安装在第二部分电池极片轧机15和第三部分连续分条机16之间；密封涂覆箱1安装在双面缝模挤压涂覆机22的中间位置。密封涂覆箱1内安装着恒张力自动纠偏放卷装置2以及第一缝模挤压涂覆头4和第二缝模挤压涂覆头10。第一烘干箱7上部设有第一排风孔8，内部安装红外发生元件5、热风悬浮装置6以及旋转纠偏导辊9和托辊11。第二烘干箱14上部设有第一排风孔8，内部安装红外发生元件5、热风悬浮装置6以及旋转纠偏导辊9。第三烘干箱20内部设有第二排风孔13，安装红外发生元件5、托辊11、旋转纠偏导辊9和固定隔板17。电气柜21放置在双面缝模挤压覆机22的左下端。双面缝模挤压涂覆机22的下面设置支撑腿18。电池极片集流体3经过恒张力自动纠偏放卷装置2放卷实现恒张力运动。沿途经托辊11、旋转纠偏导辊9，经过第一缝模挤压涂覆头4和第二缝模挤压涂覆头10，第一缝模挤压涂覆头4和第二缝模挤压涂覆头10将电池极片的活性物质均匀地涂覆在电池极片集流体3的两面，再经过第一烘干箱7、第二烘干箱14和第三烘干箱20制成带有温度的电池极片。带有温度的电池极片经过第一张力传感器23直接进入电池极片轧机15滚压，滚压后的电池极片经过第二张力传感器24直接进入连续分条机16进行分条收卷。系统以第一部分的涂覆速度为基准，通过张力传感器23控制电池极片轧机15的滚压速度，通过第二张力传感器24控制连续分条机16分条收卷速度。最终实现涂覆、滚压或涂覆、滚压、分条连续作业。The invention provides a battery pole piece coating continuous rolling system used for coating and rolling the active material of the lithium battery pole piece. In the schematic structural view of the battery pole piece coating continuous rolling system shown in FIG. 1 , the first tension sensor 23 is installed between the first part of the double-sided slot die extrusion coating machine 22 and the second part of the battery pole piece rolling machine 15; The second tension sensor 24 is installed between the second part of the battery pole piece rolling mill 15 and the third part of the continuous slitting machine 16; the sealing coating box 1 is installed in the middle of the double-sided slot die extrusion coating machine 22. A constant tension automatic deviation correction unwinding device 2 , a first slot die extrusion coating head 4 and a second slot die extrusion coating head 10 are installed in the sealed coating box 1 . The upper part of the first drying box 7 is provided with a first exhaust hole 8, and an infrared generating element 5, a hot air suspension device 6, a rotating deflection correction guide roller 9 and a support roller 11 are installed inside. The upper part of the second drying box 14 is provided with a first exhaust hole 8, and an infrared generating element 5, a hot air suspension device 6 and a rotating deflection correction guide roller 9 are installed inside. The third drying box 20 is provided with a second exhaust hole 13 inside, and an infrared generating element 5 , a supporting roller 11 , a rotating deflection correcting guide roller 9 and a fixed partition 17 are installed. The electrical cabinet 21 is placed on the lower left end of the double-sided slot die extrusion coating machine 22 . Support legs 18 are provided below the double-sided slot die extrusion coating machine 22 . The current collector 3 of the battery pole piece is unwound by the constant tension automatic deviation correction unwinding device 2 to realize constant tension movement. Along the way, pass through the idler roller 11, the rotation correction guide roller 9, pass through the first slot die extrusion coating head 4 and the second slot die extrusion coating head 10, the first slot die extrusion coating head 4 and the second slot die extrusion coating head 4 and the second slot die extrusion coating head Squeeze the coating head 10 to evenly coat the active material of the battery pole piece on both sides of the battery pole piece current collector 3, and then pass through the first drying box 7, the second drying box 14 and the third drying box 20. Become a battery pole piece with temperature. The battery pole piece with temperature passes through the first tension sensor 23 and directly enters the battery pole piece rolling machine 15 for rolling, and the rolled battery pole piece passes through the second tension sensor 24 and directly enters the continuous slitting machine 16 for slitting and winding. Based on the coating speed of the first part, the system controls the rolling speed of the battery pole piece rolling mill 15 through the tension sensor 23 , and controls the slitting and winding speed of the continuous slitting machine 16 through the second tension sensor 24 . Finally, coating, rolling or continuous operation of coating, rolling and slitting can be realized.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200610066044XA CN100429810C (en) | 2005-11-25 | 2006-03-27 | Cell polar-piece coating continuous-rolling system |
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| CN200510123975.4 | 2005-11-25 | ||
| CN200510123975 | 2005-11-25 | ||
| CNB200610066044XA CN100429810C (en) | 2005-11-25 | 2006-03-27 | Cell polar-piece coating continuous-rolling system |
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| CN100429810C true CN100429810C (en) | 2008-10-29 |
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| RU2466805C2 (en) * | 2007-04-18 | 2012-11-20 | Индустрие Де Нора С.П.А. | Electrodes with mechanically coarsened surface for electrochemical application |
| CN102074685A (en) * | 2010-07-27 | 2011-05-25 | 楼瞻浩 | Efficient and multifunctional iron phosphate lithium battery equipment |
| CN103017496B (en) * | 2011-09-22 | 2016-01-13 | 北京奥思源科技有限公司 | Lithium ion power cell pole flakes drying device and method |
| CN102380467B (en) * | 2011-09-29 | 2013-07-17 | 深圳市赢合科技股份有限公司 | Oven of coating machine |
| CN102423749B (en) * | 2011-12-27 | 2014-01-01 | 深圳市赢合科技股份有限公司 | Pole piece drying system of pole piece coating machine |
| CN103325993B (en) * | 2013-06-07 | 2015-10-28 | 东莞新能源科技有限公司 | Pole piece roll-forming method and device |
| CN106711403A (en) * | 2015-07-21 | 2017-05-24 | 东莞力朗电池科技有限公司 | A rolling device with consistent density and thickness of positive and negative electrodes |
| CN106549137A (en) * | 2015-09-17 | 2017-03-29 | 杨家军 | It is a kind of can be with forward and reverse roll forming machine for rolling battery pole piece |
| CN105413981A (en) * | 2015-12-16 | 2016-03-23 | 湖南耐普恩科技有限公司 | Extrusion type double-surface coating method |
| CN105562297A (en) * | 2015-12-16 | 2016-05-11 | 湖南耐普恩科技有限公司 | Extrusion double coating method |
| CN105562298A (en) * | 2015-12-16 | 2016-05-11 | 湖南耐普恩科技有限公司 | Extrusion double coating method |
| CN112604880A (en) * | 2020-12-10 | 2021-04-06 | 安徽新辰光学新材料有限公司 | Coating machine with adjustable spraying mode |
| CN215465733U (en) * | 2021-07-30 | 2022-01-11 | 宁德时代新能源科技股份有限公司 | a coating equipment |
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| JP2000084465A (en) * | 1998-09-18 | 2000-03-28 | Mitsubishi Cable Ind Ltd | Tape coating machine |
| JP2005246194A (en) * | 2004-03-03 | 2005-09-15 | Toyota Motor Corp | Double-side coating device |
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| CN1851958A (en) | 2006-10-25 |
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