CN210110925U - Multifunctional coating machine for lithium ion battery - Google Patents
Multifunctional coating machine for lithium ion battery Download PDFInfo
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- CN210110925U CN210110925U CN201920816868.7U CN201920816868U CN210110925U CN 210110925 U CN210110925 U CN 210110925U CN 201920816868 U CN201920816868 U CN 201920816868U CN 210110925 U CN210110925 U CN 210110925U
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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
Abstract
The utility model relates to a multi-functional coating machine for lithium ion battery, including coating machine unwinding device, active slurry coating device, the oven, the coiling mechanism, its characterized in that is still including locating the ceramic layer coating device in the oven, mass flow body (aluminium foil copper foil) is behind unwinding device, at active slurry coating device department coating (anodal/negative pole) active slurry, then walk to the oven section through the roller, again in the ceramic coating device department coating ceramic layer of oven section, following the oven drying, obtain dry positive plate or the negative pole piece that has the ceramic layer coating in coiling mechanism department at last. The ceramic layer is directly coated on the surface of the pole piece, and the ceramic layer is not required to be coated on the diaphragm, so that the problems of increase of internal resistance of the battery, reduction of rate performance and the like caused by blockage of diaphragm pores and obstruction of lithium ion migration are avoided; the active slurry coating and the ceramic layer coating are integrated into one process, so that the production process of the lithium ion battery is simplified, the production efficiency is improved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a multifunctional coating machine for a lithium ion battery.
Background
At present, in the production process of lithium ion batteries, the coating of positive/negative electrode active slurry and the coating of a diaphragm ceramic layer are two separate and independent processes. The coating of the positive/negative electrode active slurry is realized by a coating machine, and the existing lithium ion battery coating machine can only realize two process processes of coating the active slurry and drying the active slurry through one-time coating. Meanwhile, in the prior art, the ceramic layer is coated on the diaphragm, and the ceramic layer is coated on the diaphragm in the diaphragm coating process, so that the aims of protecting the diaphragm, preventing the lithium branches from piercing and the like are fulfilled, and the safety performance of the lithium ion battery is improved. However, when the ceramic is directly coated on the separator, the pores of the separator are easily blocked, lithium ion migration is blocked, and the problems of increase of internal resistance of the battery, reduction of rate performance and the like are caused. In a word, the prior coating machine has single technical function, and only can realize the coating and drying of the active slurry by one-time coating; the ceramic layer is coated on the diaphragm, so that the working procedures are increased, the process is complex, the pores of the diaphragm are easy to block, and the migration of lithium ions is hindered; the two processes of active slurry coating and ceramic layer coating are separated, and the processing cost and the management cost are increased.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provide a coating machine for a multifunctional lithium ion battery, wherein a ceramic layer is directly coated on the surface layer of a pole piece, the coating of an active material and the coating of the ceramic layer are integrated into one process, and two processes are completed through one-time coating. The technical scheme of the invention is as follows:
the utility model provides a multi-functional coating machine for lithium ion battery, including coating machine unwinding device, active paste coating device, oven, coiling mechanism, its characterized in that still includes the ceramic layer coating device of locating in oven (section), the mass flow body (aluminium foil/copper foil) is through unwinding device back, at active paste coating device department coating (anodal/negative pole) active paste, then through the roller tape-out to the oven section, again at the ceramic coating device department coating ceramic layer of oven section, following with oven drying, obtain dry positive plate or the negative pole piece that has the ceramic layer coating at coiling mechanism department at last.
Optionally, the active slurry coating device is a blade transfer coater head or an extrusion coater head.
Optionally, the ceramic layer coating device comprises a ceramic powder or slurry storage tank, a transmission belt and a slit discharging nozzle, wherein the transmission belt is provided with a motor, the transmission belt transports the ceramic powder or slurry to the slit discharging nozzle through the ceramic powder or slurry storage tank, and the ceramic powder or slurry falls onto a pole piece driven below under the action of gravity to realize the coating of the ceramic layer.
The thickness of the ceramic coating layer can be controlled by adjusting the speed of the conveyor belt and the width of the slit blanking nozzle.
Further, the motor is provided with a motor rotation speed regulator for regulating the rotation speed, and the slit discharging nozzle is provided with a width regulator for regulating the width of the slit discharging nozzle.
Optionally, the ceramic coating device includes a storage tank for ceramic powder or slurry, a pump, a transmission pipeline, an air compressor, a high-pressure air pipeline, and a slit nozzle, where the ceramic powder or slurry is transported to the position of the slit nozzle through the pump and the transmission pipeline, and meanwhile, high-pressure air generated by the air compressor is transported to the position of the slit nozzle through the high-pressure air pipeline, and at the position of the slit nozzle, the high-pressure air breaks away the ceramic powder or atomizes the ceramic slurry, and then sprays the ceramic slurry onto a pole piece driven below.
The thickness of the ceramic coating layer can be controlled by adjusting the delivery speed of the pump, the air pressure, and the width of the slit nozzle.
Further, the pump is provided with a pump rotational speed regulator for regulating the rotational speed, the air compressor is provided with an air pressure regulator for regulating the air pressure, and the slit nozzle is provided with a width regulator for regulating the width of the slit nozzle.
According to the coating machine for the multifunctional lithium ion battery, the ceramic layer is directly coated on the surface of the pole piece, and the ceramic layer is not required to be coated on the diaphragm, so that the problems of increase of internal resistance of the battery, reduction of rate performance and the like caused by blockage of pores of the diaphragm and obstruction of lithium ion migration are avoided; the active slurry coating and the ceramic layer coating are integrated into one process, so that the production process of the lithium ion battery is simplified, the production efficiency is improved, and the production cost is reduced. The ceramic layer can be coated on the surface layer of the anode and the surface layer of the cathode, and the ceramic coating device is suitable for a scraper transfer type coating machine and an extrusion type coating machine.
Drawings
FIG. 1 is a schematic view of the structure of a coater according to the present invention;
FIG. 2 is a schematic view of a structure of a ceramic layer coating apparatus a according to example 2;
FIG. 3 is a schematic view of the structure of a ceramic layer coating apparatus b of example 3;
fig. 4 is a structural diagram illustrating a structure of a slit discharging nozzle in embodiment 2 and a slit nozzle width adjustment structure in embodiment 3.
The device comprises a 1-unreeling device, a 2-active slurry coating device, a 3-oven, a 4-ceramic layer coating device, a 4 a-ceramic layer coating device enlargement image, a 41-ceramic powder storage tank or slurry storage tank, a 42-transmission belt, a 43-motor, a 43 a-motor rotating speed regulator, a 44 a-slit blanking nozzle, a 44 b-slit nozzle, a 46-pump, a 46 a-pump rotating speed regulator, a 47-transmission pipeline, a 48-air compressor, a 48 a-air pressure regulator, a 49-high-pressure air pipeline, a 5-current collector reeling device, a 6-current collector (aluminum foil/copper foil), a 61-active material layer, a 62-ceramic layer and a 7-width regulating structure (screw).
The direction of the arrows in fig. 1-3 is the direction of coating tape transport (movement of the current collector, i.e. the aluminum/copper foil).
Detailed Description
The present invention is further described below with reference to examples.
Example 1
The multifunctional coating machine for the lithium ion battery in the embodiment has a structure shown in fig. 1, and comprises a coating machine unreeling device, an active slurry coating device, an oven and a reeling device, and is characterized by further comprising a ceramic layer coating device arranged in the oven (section), wherein after a current collector (an aluminum foil or a copper foil, in the embodiment, an aluminum foil) is reeled, positive plate active slurry (a positive electrode or a negative electrode, in the embodiment, a positive electrode) is coated at the active slurry coating device, then the current collector is transported to the oven section through a roller, a ceramic layer is coated at the ceramic coating device of the oven section, and then the coating machine is dried along with the oven, and finally a dried positive plate with a ceramic layer coating layer is obtained at the reeling device. The process realizes that the coating of the active slurry and the coating of the ceramic layer are integrated into one process, and the process flow does not need to coat the ceramic layer on the diaphragm, thereby omitting the process of coating the ceramic layer on the diaphragm. For the ceramic layer coating device arranged on the oven section of the coating machine, ceramic powder or ceramic slurry can be coated on the surface layer of the pole piece, and then the pole piece is dried by the oven along with the active slurry layer.
The active slurry coating device is a scraper transfer coater head or an extrusion coater head, and the ceramic coating device is suitable for both a scraper transfer coater and an extrusion coater.
Example 2
Embodiment 1 of the present embodiment is different in that: the current collector is a copper foil in the embodiment, and after being placed and rolled, the active slurry is coated on the negative plate by an active slurry coating device; ceramic layer coating device contains ceramic powder holding vessel or thick liquids holding vessel, is provided with the transmission band of motor to and slit unloading mouth, and the structure is shown as figure 2, and the transmission band transports ceramic powder or thick liquids to slit unloading mouth department through ceramic powder holding vessel or thick liquids holding vessel, and ceramic powder or thick liquids lean on the action of gravity to fall to the driven pole piece in below on, realize the coating of ceramic layer.
The motor is provided with a motor rotating speed regulator so as to regulate and control the rotating speed, and the slit discharging nozzle is provided with a width regulator so as to regulate and control the width of the slit discharging nozzle. In this embodiment, the motor speed controller is provided with a slide rheostat, and the position of the slide rheostat is adjusted so as to regulate and control the current of the motor, thereby regulating the speed and finally regulating and controlling the transmission speed of the transmission belt. In this embodiment, the width adjuster is a screw structure, the slit discharging nozzle is divided into two parts, each part is connected with a screw, and the width of the slit discharging nozzle is adjusted by the screw (rotation), and the structure is shown in fig. 4.
The thickness of the ceramic coating layer can be controlled by adjusting the speed of the conveyor belt and the width of the slit blanking nozzle.
The rest is the same as in example 1.
Example 3
The difference of embodiment 1 is that the ceramic coating apparatus includes a ceramic powder storage tank or a slurry storage tank, a pump, a transmission pipeline, an air compressor, a high-pressure air pipeline, and a slit nozzle, and the structure is as shown in fig. 3, the ceramic powder or the slurry is transported to the position of the slit nozzle through the pump and the transmission pipeline, and simultaneously, the high-pressure air generated by the air compressor is transported to the position of the slit nozzle through the high-pressure air pipeline, and at the slit nozzle, the high-pressure air is used for scattering the ceramic powder or atomizing the ceramic slurry, and then is sprayed on the pole piece driven below.
The pump is provided with a pump rotational speed regulator for regulating the rotational speed, the air compressor is provided with an air pressure regulator for regulating the air pressure, and the slit nozzle is provided with a width regulator for regulating the width of the slit nozzle. In this embodiment, the pump speed controller is provided with a slide rheostat, and the position of the slide rheostat is adjusted so as to regulate and control the current of the motor, thereby regulating and controlling the speed of the pump and finally regulating and controlling the transmission speed of the pump. In this embodiment, the width adjuster is a screw structure, the slit nozzle is divided into two parts, each part is connected with a screw, and the width of the slit nozzle is adjusted by the screw (rotation), and the structure is shown in fig. 4.
The thickness of the ceramic coating layer can be controlled by adjusting the delivery speed of the pump, the air pressure, and the width of the slit nozzle.
The rest is the same as in example 1.
Claims (6)
1. The utility model provides a multi-functional coating machine for lithium ion battery, includes coating machine unwinding device, active paste coating device, oven, coiling mechanism, its characterized in that still includes the ceramic layer coating device of locating in the oven, and the mass flow body is behind unwinding device, at active paste coating device department active paste coating, then takes to the oven section, again coats the ceramic layer in the ceramic coating device department of oven section, and is dry along with the oven after that, obtains the positive plate or the negative pole piece that dry has the ceramic layer coating layer in coiling mechanism department at last.
2. The multifunctional coating machine for lithium ion batteries according to claim 1, characterized in that: the active slurry coating device is a scraper transfer coating machine head or an extrusion coating machine head.
3. The multifunctional lithium ion battery coating machine according to claim 1 or 2, wherein the ceramic layer coating device comprises a ceramic powder storage tank or a slurry storage tank, a transmission belt provided with a motor, and a slit discharging nozzle, the transmission belt transports ceramic powder or slurry to the slit discharging nozzle through the ceramic powder storage tank or the slurry storage tank, and the ceramic powder or slurry falls onto a pole piece driven below by gravity to realize coating of the ceramic layer.
4. The multifunctional lithium ion battery coater according to claim 3, wherein the motor is provided with a motor speed controller for controlling the rotation speed, and the slit discharging nozzle is provided with a width controller for controlling the width of the slit discharging nozzle.
5. The multifunctional lithium ion battery coater according to claim 1 or 2, wherein the ceramic coating device comprises a ceramic powder storage tank or a slurry storage tank, a pump, a transmission pipeline, an air compressor, a high-pressure air pipeline, a slit nozzle, and ceramic powder or slurry transported to the position of the slit nozzle through the pump and the transmission pipeline, and simultaneously, high-pressure air generated by the air compressor is transported to the position of the slit nozzle through the high-pressure air pipeline, and at the position of the slit nozzle, the high-pressure air is used for scattering ceramic powder or atomizing ceramic slurry and then spraying the ceramic slurry on a pole piece driven below.
6. The multifunctional lithium ion battery coater according to claim 5, wherein the pump is provided with a pump rotation speed regulator for regulating the rotation speed, the air compressor is provided with an air pressure regulator for regulating the air pressure, and the slit nozzle is provided with a width regulator for regulating the width of the slit nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920816868.7U CN210110925U (en) | 2019-06-02 | 2019-06-02 | Multifunctional coating machine for lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920816868.7U CN210110925U (en) | 2019-06-02 | 2019-06-02 | Multifunctional coating machine for lithium ion battery |
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| CN210110925U true CN210110925U (en) | 2020-02-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111785916A (en) * | 2020-07-29 | 2020-10-16 | 吉林大学 | Two-sided quick coating film of PET membrane, coating equipment |
| CN114311958A (en) * | 2021-12-29 | 2022-04-12 | 无锡宏瑞机器制造有限公司 | Lithium cell electrode production is with high-speed two-sided intaglio printing coating machine |
| CN115078461A (en) * | 2022-06-28 | 2022-09-20 | 安徽维纳物联科技有限公司 | Hydrogen MEMS sensor for power battery detection and preparation method thereof |
| CN116564615A (en) * | 2023-06-14 | 2023-08-08 | 海目星激光科技集团股份有限公司 | Pole piece processing method, pole piece processing equipment and pole piece |
-
2019
- 2019-06-02 CN CN201920816868.7U patent/CN210110925U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111785916A (en) * | 2020-07-29 | 2020-10-16 | 吉林大学 | Two-sided quick coating film of PET membrane, coating equipment |
| CN114311958A (en) * | 2021-12-29 | 2022-04-12 | 无锡宏瑞机器制造有限公司 | Lithium cell electrode production is with high-speed two-sided intaglio printing coating machine |
| CN115078461A (en) * | 2022-06-28 | 2022-09-20 | 安徽维纳物联科技有限公司 | Hydrogen MEMS sensor for power battery detection and preparation method thereof |
| CN116564615A (en) * | 2023-06-14 | 2023-08-08 | 海目星激光科技集团股份有限公司 | Pole piece processing method, pole piece processing equipment and pole piece |
| CN116564615B (en) * | 2023-06-14 | 2024-03-19 | 海目星激光科技集团股份有限公司 | Pole piece processing method, pole piece processing equipment and pole piece |
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Address after: 410205 East of the first floor, 2nd floor, 7th floor, 8th floor, Building B8, Luguyuyuan, No. 27 Wenxuan Road, Changsha High-tech Development Zone, Changsha, Hunan Province Patentee after: Aerospace Science and Industry (Changsha) New Materials Research Institute Co.,Ltd. Address before: 410205 7th floor, building B8, Lugu Enterprise Square, Yuelu District, Changsha City, Hunan Province Patentee before: CHANGSHA ADVANCED MATERIALS INDUSTRIAL RESEARCH INSTITUTE Co.,Ltd. |
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