Slitting apparatus and method for secondary battery
阅读说明:本技术 用于二次电池的切口设备和方法 (Slitting apparatus and method for secondary battery ) 是由 禹相珍 丁泰焕 朴信永 姜泰远 朴池树 朴东赫 安昶范 金宰弘 于 2018-12-19 设计创作,主要内容包括:本发明涉及一种电极切口设备。所述电极切口设备包括:切口单元,将电极均分成预定图案;加热单元,干燥由所述切口单元处理的电极;和收集单元,收集由所述加热单元干燥的电极,其中所述加热单元包括:加热体,具有干燥空间,由所述切口单元供应的电极经过所述干燥空间;和加热构件,直接加热经过所述干燥空间的电极的表面,以干燥残留在电极上的水分。(The present invention relates to an electrode notching apparatus. The electrode notching apparatus includes: a notching unit equally dividing the electrodes into predetermined patterns; a heating unit drying the electrode processed by the cutting unit; and a collecting unit that collects the electrode dried by the heating unit, wherein the heating unit includes: a heating body having a drying space through which the electrode supplied from the slit unit passes; and a heating member directly heating a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.)
1. A slitting apparatus for a secondary battery, the slitting apparatus comprising:
a notching unit equally dividing the electrodes into predetermined patterns;
a heating unit drying the electrode processed by the cutting unit; and
a collecting unit collecting the electrode dried by the heating unit,
wherein the heating unit includes:
a heating body having a drying space through which the electrodes equally divided by the slit unit pass; and
and a heating member directly heating a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.
2. The lancing apparatus of claim 1, wherein each of the heating members comprises:
a mounting part disposed in the drying space; and
and a plurality of heating lamps mounted on the mounting part and disposed adjacent to the surface of the electrode to directly heat the surface of the electrode, thereby drying moisture remaining on the electrode.
3. The lancing apparatus of claim 2, wherein the mounting member comprises:
a fixing plate disposed in the drying space; and
a guide plate slidably coupled to the fixing plate and on which the plurality of heating lamps are mounted.
4. The notching apparatus of claim 3, wherein said heating body includes:
an inlet provided at a left surface of the heating body and through which the electrode supplied from the slit unit is introduced;
an outlet provided at a right surface of the heating body, and through which the electrode introduced into the drying space is discharged; and
a cover coupled to one surface between the inlet and the outlet,
wherein the guide plate is coupled to the fixing plate to slide toward the cover.
5. The notching apparatus of claim 4, wherein the heating unit further includes a conveying roller that conveys an electrode introduced into the drying space,
wherein the transfer roller includes: a first transfer roller disposed at an inlet side of the drying space; a second transfer roller disposed at an upper portion of a left surface of the drying space; a third transfer roller disposed at an upper portion of a right surface of the drying space; and a fourth transfer roller disposed at an outlet side of the drying space,
the heating members are respectively provided between the first conveying roller and the second conveying roller, between the second conveying roller and the third conveying roller, and between the third conveying roller and the fourth conveying roller, and
the electrode introduced into the drying space is dried by the heating member while being conveyed along the first conveying roller to the fourth conveying roller.
6. The slitting apparatus as set forth in claim 5 wherein the heating members are respectively provided to correspond to both surfaces of the electrode to dry both surfaces of the electrode at the same time.
7. The notching apparatus according to claim 6, wherein a heating member that dries one surface of the electrode facing a wall of the drying space is installed on the wall of the drying space, and
a heating member drying the other surface of the electrode is installed on an auxiliary frame provided in the drying space.
8. The lancing apparatus of claim 2, wherein the heating lamp is spaced from the surface of the electrode by a distance of 2mm to 10 mm.
9. The notching apparatus according to claim 1, wherein the heating unit further includes a venting member that vents air containing moisture inside the drying space to the outside.
10. The slitting device according to claim 9, wherein the vent member is provided on an outer surface of the heating body.
11. The lancing apparatus of claim 10, wherein the venting member comprises:
an exhaust pipe disposed on an outer surface of the heating body to discharge air inside the drying space to the outside; and
and an exhaust pump generating a suction force to forcibly discharge the air inside the drying space to the outside through the exhaust duct.
12. The lancing apparatus of claim 2, wherein the heating lamps comprise far infrared lamps.
13. The lancing apparatus of claim 2, wherein the heating lamp comprises a xenon lamp.
14. A slitting method for a secondary battery, the slitting method comprising:
a notching step (S10) of equally dividing the electrodes into predetermined electrode patterns by a notching unit;
a drying step (S20) of directly heating the surface of the electrode processed in the cutting step by using a heating unit to dry moisture remaining on the electrode; and
a collecting step (S30) of collecting the electrodes dried in the drying step into a collecting unit,
wherein the heating unit includes:
a heating body having a dry space through which the electrode supplied in the slitting step (S10) passes; and
and a heating member directly heating a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.
Technical Field
Cross Reference to Related Applications
This application claims the benefit of priority of korean patent application No. 10-2018-.
Background
In general, a secondary battery refers to a chargeable and dischargeable battery different from a non-chargeable primary battery. Secondary batteries are widely used in high-tech electronic fields such as mobile phones, notebook computers, and camcorders.
Such a secondary battery includes an electrode assembly in which electrodes and separators are alternately stacked, and a case accommodating the electrode assembly, and the electrode assembly has a structure in which a plurality of electrodes and a plurality of separators are alternately stacked.
Also, the method for manufacturing the secondary battery includes a process of manufacturing an electrode, a process of stacking the manufactured electrode and a separator to manufacture an electrode assembly, and a process of accommodating the manufactured electrode assembly in a case to manufacture the secondary battery.
Here, the electrode manufacturing process further includes a notching process of notching the electrode. In the notching process, a processing process of equally dividing the electrode into electrode patterns and a drying process of drying moisture remaining on the surface of the equally divided electrode are performed. In the drying process, the electrode active material applied to the current collector of the electrode is dried by using hot air to evaporate moisture.
However, since the drying process uses hot air, it takes a long time to dry the electrode active material applied to the current collector. Therefore, the productivity of the electrode may be significantly reduced. In particular, the notching process has a problem in that the treating process and the drying process are separately performed, significantly reducing the working efficiency.
Disclosure of Invention
Technical problem
The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a slitting apparatus and method for a secondary battery, in which a uniform electrode is directly heated to rapidly dry moisture remaining on the surface of the electrode to significantly reduce the drying time, and particularly, a process of slitting the electrode and a process of drying the electrode are combined with each other to significantly improve the working efficiency.
Technical scheme
In order to achieve the above object, a slitting device for a secondary battery according to a first embodiment of the present invention includes: a notching unit equally dividing the electrodes into predetermined patterns; a heating unit drying the electrode processed by the cutting unit; and a collecting unit that collects the electrode dried by the heating unit, wherein the heating unit includes: a heating body having a drying space through which the electrode supplied from the slit unit passes; and a heating member directly heating a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.
Each of the heating members may include: a mounting part disposed in the drying space; and a plurality of heating lamps installed on the installation part and disposed adjacent to the surface of the electrode to directly heat the surface of the electrode, thereby drying moisture remaining on the electrode.
The mounting member may include: a fixing plate disposed in the drying space; and a guide plate slidably coupled to the fixing plate and on which a plurality of heating lamps are mounted.
The heating body may include: an inlet provided at a left surface of the heating body and through which the electrode supplied from the slit unit is introduced; an outlet provided at a right surface of the heating body, and through which the electrode introduced into the drying space is discharged; and a cover coupled to one surface between the inlet and the outlet, wherein the guide plate is coupled to the fixing plate to slide toward the cover.
The heating unit may further include a transfer roller that transfers the electrode introduced into the drying space, wherein the transfer roller may include: a first transfer roller disposed at an inlet side of the drying space; a second transfer roller disposed at an upper portion of a left surface of the drying space; a third transfer roller disposed at an upper portion of a right surface of the drying space; and a fourth transfer roller disposed at the outlet side of the drying space, the heating members being disposed between the first transfer roller and the second transfer roller, between the second transfer roller and the third transfer roller, and between the third transfer roller and the fourth transfer roller, respectively, and introduced into the drying space, the electrodes being followed from the first transfer roller to the fourth transfer roller while being transferred by the heating members for drying.
The heating members may be respectively disposed to correspond to both surfaces of the electrode to simultaneously dry both surfaces of the electrode.
A heating member drying one surface of the electrode facing the wall of the drying space may be installed on the wall of the drying space, and a heating member drying the other surface of the electrode may be installed on an auxiliary frame provided in the drying space.
The heating lamp is spaced from the surface of the electrode by a distance of 2mm to 10 mm.
The heating unit may further include an exhaust member that exhausts the air containing moisture inside the drying space to the outside.
The gas discharge member may be disposed on an outer surface of the heating body.
The exhaust member may include: an exhaust pipe disposed on an outer surface of the heating body to discharge air inside the drying space to the outside; and an exhaust pump generating a suction force to forcibly discharge the air inside the drying space to the outside through the exhaust duct.
The heating lamps may include far infrared lamps or xenon lamps.
A slitting method for a secondary battery using a slitting device for a secondary battery according to a second embodiment of the present invention includes: a notching step (S10) of equally dividing the electrodes into predetermined electrode patterns by a notching unit; a drying step (S20) of directly heating the surface of the electrode processed in the cutting step by using a heating unit to dry moisture remaining on the electrode; and a collecting step (S30) of collecting the electrode dried in the drying step into a collecting unit, wherein the heating unit includes: a heating body having a dry space through which the electrode supplied in the slitting step (S10) passes; and a heating member directly heating a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.
Advantageous effects
1. The notching device for a secondary battery according to the present invention may include a notching unit, a heating unit, and a collecting unit. The heating unit may include a heating body and a heating member. Therefore, the surface of the notch electrode can be directly heated to rapidly dry the moisture remaining on the electrode. As a result, the working time can be significantly reduced to significantly improve productivity. In particular, the process of notching the electrode and the process of drying the electrode may be combined with each other to significantly improve the working efficiency.
2. The heating member according to the present invention may include a mounting part and a plurality of heating lamps. Therefore, the surface of the electrode can be directly heated by using heat emitted from the plurality of heating lamps to dry moisture remaining on the electrode more quickly.
3. The mounting member according to the present invention may include: a fixing plate; and a guide plate slidably coupled to the fixing plate and on which a plurality of heating lamps are mounted. Therefore, the guide plate can be taken out from the heating body to easily replace the plurality of heating lamps, thereby improving working efficiency.
4. The heating body according to the present invention may include an inlet to introduce the electrode, an outlet to discharge the electrode, and a cover. Therefore, the heating member installed inside the heating body can be taken out from the heating body for repair. In particular, the guide plate may be slid toward the cover to more easily replace the plurality of heating lamps mounted on the guide plate.
5. The present invention may include a transfer roller for transferring the electrode introduced into the heating body. Therefore, the electrode can be stably guided from the inlet to the outlet of the heating body. As a result, the heating member can stably directly heat the surface of the electrode.
6. The transfer rollers according to the present invention may include first to fourth transfer rollers respectively installed at the vertexes of the heating body. Therefore, the electrode introduced into the heating body can be maximally circulated to increase the residence time, thereby remarkably increasing the drying rate of the electrode.
7. The heating members according to the present invention may be installed between the first and second transfer rollers, between the second and third transfer rollers, and between the third and fourth transfer rollers, respectively. Therefore, the electrodes conveyed along the first conveying roller to the fourth conveying roller can be dried effectively to significantly improve the drying rate of the electrodes.
8. The heating member according to the present invention may be provided on each of both surfaces of the electrode. Therefore, both surfaces of the electrode can be dried simultaneously to improve the working efficiency and reduce the working time.
9. The heating body according to the present invention may include an auxiliary frame for mounting the heating member. Therefore, the heating member that cannot be mounted on the wall of the heating body can be stably mounted.
10. The heating unit according to the present invention may include an exhaust member for discharging air inside the heating body to the outside. Therefore, air containing moisture in the heating body can be discharged to the outside, thereby remarkably increasing the drying rate of the electrode.
11. The gas discharge member according to the present invention may be disposed on an outer surface of the heating body. Therefore, it is possible to prevent liquid droplets from being generated on the boundary line between the heating body and the gas discharge member.
12. The exhaust member according to the present invention may include an exhaust pipe and an exhaust pump. Therefore, the air inside the heating body can be more quickly discharged to the outside.
13. The heating lamp according to the present invention may include a far infrared lamp or a xenon lamp. The far-infrared lamp can emit infrared rays having a wavelength of 25 μm or more (longer than that of visible light and thus can not be seen by the eye), has a large thermal effect, and has a high permeation property to achieve a good drying efficiency. Further, xenon lamps can be brighter than filaments and can also emit light from the bulb rather than from the filament to dry the surface of the electrode more widely and quickly. In particular, the life of the xenon lamp can be longer than that of the filament, thereby greatly reducing the maintenance cost.
Drawings
Fig. 1 is a perspective view of a slitting device for a secondary battery according to a first embodiment of the present invention.
Fig. 2 is a perspective view of a heating unit provided in a slitting apparatus for secondary batteries according to a first embodiment of the present invention.
Fig. 3 is a partially exploded perspective view of a heating unit provided in a slitting device for secondary batteries according to a first embodiment of the present invention.
Fig. 4 is a sectional view of a heating unit provided in a slitting device for secondary batteries according to a first embodiment of the present invention.
Fig. 5 is a partially enlarged view of a heating unit provided in the slitting device for the secondary battery according to the first embodiment of the present invention.
Fig. 6 is a flowchart illustrating a slitting method for a secondary battery according to a second embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that the technical idea of the present invention can be easily implemented by those skilled in the art to which the present invention pertains. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, any unnecessary content for describing the invention will be omitted for clarity, and like reference numerals denote like elements throughout the drawings.
[ electrodes ]
The
A slitting process of dividing the electrodes into predetermined electrode patterns equally is performed on the electrodes manufactured as described above. Here, a notching device for a secondary battery is used.
In particular, in the slitting device for the secondary battery, the electrodes may be equally divided into a predetermined pattern, and the equally divided electrodes may be dried to significantly improve the working efficiency.
[ notching device for Secondary Battery ]
That is, as shown in fig. 1, the slitting device for the secondary battery according to the first embodiment of the present invention includes: a notching
Incision unit
Referring to fig. 1, the
Heating unit
As shown in fig. 2 and 3, the
The
In the
The
The
The mounting
Accordingly, in the
Here, the
In the
The
Each of the fixing
As shown in fig. 4 and 5, each of the
Here, the
Accordingly, the
The
The plurality of
The
For example, the
Here, the
Accordingly, the
The
The
Here, the
The
Specifically, the
As described above, the
Collection unit
Referring to fig. 1 and 2, the collecting
The collecting
In the electrode drying system for a secondary battery according to the first embodiment of the present invention including the above-described composition, the surface of the electrode may be directly heated and dried to more rapidly dry moisture remaining on the electrode, thereby reducing the drying time and improving the productivity.
Hereinafter, a notching method using the electrode notching device according to the first embodiment of the present invention will be described.
[ notching method for Secondary Battery ]
As shown in fig. 6, a slitting method for a secondary battery according to a second embodiment of the present invention includes: a notching step (S10) of equally dividing the electrodes into predetermined electrode patterns by a notching unit; a drying step (S20) of directly heating the surface of the electrode processed in the notching step by using a heating unit to dry moisture remaining on the electrode; and a collecting step (S30) of collecting the electrode dried in the drying step into a collecting unit.
In the slitting step (S10), the unprocessed electrode film wound in a roll shape is supplied by the unwinding part, the unprocessed electrode film supplied from the unwinding part is horizontally conveyed by a predetermined distance by the film feeding part, the slitting processing part divides the unprocessed electrode film horizontally conveyed by the film feeding part into predetermined electrode patterns to form electrodes, and the divided electrodes are checked by the visual inspection part for defects.
In the drying step (S20), the electrode on which the slitting step (S10) is performed is introduced into the drying
Here, each
Here, if there is a lifetime end heating lamp among the plurality of
In the collecting step (S30), the
The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description and the exemplary embodiments described therein. Various modifications made within the meaning of an equivalent of the claims of the invention and within the scope of the claims are to be considered within the scope of the invention.
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