KR102605661B1 - Manufacturing apparatus of separator for secondary battery - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing a composite solid electrolyte separator for a secondary battery, and more specifically, to a composite solid electrolyte separator formed by evenly distributing a composite solid electrolyte on an inorganic sheet as a separator disposed between the anode and cathode of a secondary battery. This relates to a manufacturing device for a composite solid electrolyte separator for secondary batteries that can be effectively manufactured.
The apparatus for manufacturing a composite solid electrolyte separator for a secondary battery according to the present invention includes a lower sheet supply unit for supplying a lower sheet; An electrolyte supply unit that supplies a complex solid electrolyte to the surface of the lower sheet supplied from the lower sheet supply unit; an electrolyte treatment unit that evenly distributes the composite solid electrolyte supplied to the surface of the lower sheet; an inorganic sheet supply unit that supplies an inorganic sheet to the upper surface of the composite solid electrolyte via the electrolyte treatment unit; an inorganic sheet lamination unit that laminates the inorganic sheet supplied from the inorganic sheet supply unit to face the lower sheet; and a separator winding portion where the separator formed while passing through the inorganic sheet lamination portion is wound.

Description

Composite solid electrolyte separator manufacturing device for secondary batteries {MANUFACTURING APPARATUS OF SEPARATOR FOR SECONDARY BATTERY}

The present invention relates to an apparatus for manufacturing a composite solid electrolyte separator for a secondary battery, and more specifically, to a composite solid electrolyte separator formed by evenly distributing a composite solid electrolyte on an inorganic sheet as a separator disposed between the anode and cathode of a secondary battery. This relates to a manufacturing device for a composite solid electrolyte separator for secondary batteries that can be effectively manufactured.

In general, as the use of electronic devices such as smartphones becomes more widespread and miniaturized, secondary batteries are also becoming smaller. Among secondary batteries, organic electrolytes are used, resulting in a discharge voltage that is more than twice as high and a high energy density compared to batteries that use existing alkaline aqueous solutions. Lithium secondary batteries that show are widely used.

The above lithium secondary battery consists of a positive electrode, an electrolyte, and a negative electrode. Commercialized lithium secondary batteries have a structure in which a 15-25 ㎛ thick polymer separator is added to a liquid electrolyte composed of an organic solvent and lithium salt. During discharging, Li ⁺ ions move from the cathode to the anode, and Li is ionized to generate energy. Electrons also move from the cathode to the anode, and move in the opposite direction during charging.

The driving force for Li ⁺ ion movement is generated by chemical stability depending on the potential difference between the two electrodes. The capacity (Ah) of the battery is determined by the amount of Li ⁺ ions that move from the cathode to the anode and from the anode to the cathode. Because the movement of Li ⁺ ions occurs through the electrolyte, the Li ⁺ ion conductivity of the electrolyte is known to affect the charge/discharge speed of the battery.

Meanwhile, an All-Solid-State Battery replaces the liquid electrolyte with a solid electrolyte among the above battery components. Compared to a liquid electrolyte, there is no risk of explosion or fire in the battery, the manufacturing process is simplified, and the energy density is high. It is in the spotlight as a next-generation secondary battery due to its potential.

However, while all-solid secondary batteries have higher safety compared to liquid electrolytes due to the use of solid electrolytes, there is a problem of reduced ionic conductivity due to fewer ion conduction paths due to reduced interfacial contact with the electrode.

Meanwhile, in recent years, sodium secondary batteries have been developed in which sodium metal oxide is used as the positive electrode active material, and metal, sodium metal alloy, crystalline or amorphous carbon, or carbon composite is used as the negative electrode active material. This sodium secondary battery is charged and discharged by repeating the process of intercalation and deintercalation of sodium ions from the sodium metal oxide on the positive electrode to the graphite electrode on the negative electrode.

Additionally, the separator is a core component of secondary batteries, and NASICON is mainly used to prevent fire risks and safely use secondary batteries. Nasicon is a type of ceramic and has high ionic conductivity, but because it has high surface resistance and is prone to breaking, a composite solid electrolyte mixed with a polymer is used. However, composite solid electrolytes have low tensile strength and are not highly usable. Non-woven fabrics are used to make a support and coated with composite solid electrolytes, but non-woven fabrics have the problem of deformation even at low temperatures.

To solve this problem, the present applicant is researching a composite solid electrolyte separator using inorganic fibers that increases usability by increasing lifespan and heat resistance, and a secondary battery using the same.

However, conventional separator manufacturing equipment for all-solid-state secondary batteries does not have dedicated equipment, and it is common to modify equipment used for separators using existing liquid electrolytes to provide an optimal manufacturing environment, making it impossible to secure stable productivity. There is a limit.

In addition, the conventional all-solid-state secondary battery separator manufacturing device has the problem of not being able to guarantee sufficient quality because it is difficult to evenly distribute the composite solid electrolyte on the surface of the separator or manufacture it at an appropriate thickness and density.

In addition, the conventional separator manufacturing device for secondary batteries has the disadvantage of taking a lot of time to produce because the movement path of the main sheet is too long, and the device is complicated and has many failure points, so productivity is low due to increased downtime due to maintenance. , there is a disadvantage that operating and maintenance costs increase.

Korean Patent No. 10-2000696 “Coating machine for separator for secondary batteries” Korean Patent Publication No. 10-2019-0050226 “Solid electrolyte separator coated with lithium-containing interlayer and all-solid-state secondary battery using the same”

The present invention was proposed in light of the above contents, and is a composite solid electrolyte separator manufacturing device for secondary batteries that can effectively manufacture a composite replacement electrolyte separator while uniformly distributing the composite solid electrolyte on an inorganic sheet at an even thickness and density through flow operation. The purpose is to provide.

In order to achieve the above object, an apparatus for manufacturing a composite solid electrolyte separator for a secondary battery according to the present invention includes a lower sheet supply unit for supplying a lower sheet; An electrolyte supply unit that supplies a complex solid electrolyte to the surface of the lower sheet supplied from the lower sheet supply unit; an electrolyte treatment unit that evenly distributes the composite solid electrolyte supplied to the surface of the lower sheet; an inorganic sheet supply unit that supplies an inorganic sheet to the upper surface of the composite solid electrolyte via the electrolyte treatment unit; an inorganic sheet lamination unit that laminates the inorganic sheet supplied from the inorganic sheet supply unit to face the lower sheet; and a separator winding portion where the separator formed while passing through the inorganic sheet lamination portion is wound.

The electrolyte treatment unit may include a heating and pressurizing unit that heats and pressurizes the composite solid electrolyte.

Preferably, the lower sheet supply unit includes a lower sheet unwinder that supplies the lower sheet, and the electrolyte supply unit includes a dispenser that supplies a complex solid electrolyte to the surface of the lower sheet drawn out from the lower sheet unwinder. The heating press unit and the inorganic sheet lamination unit include a heating roller that applies heat and pressurizes through a rotational motion, and the inorganic sheet supply unit includes an inorganic sheet unwinder that pulls out the wound inorganic sheet. , the separator winding unit may be configured to include a separator winder on which the separator formed while passing through the inorganic sheet lamination unit is wound.

Meanwhile, an apparatus for manufacturing a composite solid electrolyte separator for a secondary battery according to the present invention includes a lower sheet supply unit for supplying a lower sheet; An electrolyte supply unit that supplies a complex solid electrolyte to the surface of the lower sheet supplied from the lower sheet supply unit; an electrolyte treatment unit that evenly distributes the composite solid electrolyte supplied to the surface of the lower sheet; an inorganic sheet supply unit that supplies an inorganic sheet to the upper surface of the composite solid electrolyte via the electrolyte treatment unit; an inorganic sheet lamination unit that laminates the inorganic sheet supplied from the inorganic sheet supply unit to face the lower sheet; And a separator winding unit where the separator formed while passing through the inorganic sheet lamination unit is wound, wherein the electrolyte processing unit includes an upper sheet supply unit that supplies an upper sheet to the upper surface of the composite solid electrolyte; An upper sheet lamination unit that combines the upper sheet supplied from the upper sheet supply unit to face the lower sheet; And an upper sheet separation part that separates the upper sheet via the upper sheet joining part.

Preferably, the lower sheet supply unit includes a lower sheet unwinder that supplies the lower sheet, and the electrolyte supply unit includes a dispenser that supplies a complex solid electrolyte to the surface of the lower sheet drawn out from the lower sheet unwinder. It includes, the upper sheet supply unit includes an upper sheet unwinder that supplies the upper sheet to the upper surface of the lower sheet via the dispenser, and the upper sheet lamination unit applies heat to the lower sheet and the upper sheet It includes a heating pressurizing part that presses the sheets so that they overlap each other, the upper sheet separation part includes an upper sheet tree winder that separates and winds the upper sheet via the upper sheet lamination part, and the inorganic sheet supply part supplies the inorganic sheet. It includes an inorganic sheet unwinder, and the inorganic sheet lamination part includes a heating pressurizing part that laminates the inorganic sheet drawn out from the inorganic sheet unwinder to the upper surface of the lower sheet, and the separator winding part passes through the inorganic sheet lamination part. It may be configured to include a separator winder on which the formed separator is wound.

The lower sheet unwinder may be configured to include an unwinder roller on which the lower sheet is wound, an unwinder roller supporter supporting both ends of the unwinder roller, and a roller cylinder that moves the unwinder roller. .

The separator winder includes a separator roller on which the separator is wound, a separator roller supporter supporting both ends of the separator roller, a roller cylinder that moves the separator roller, and a pulling operation of the lower sheet and a winding operation of the separator. It may be configured to include a separator roller drive unit that rotates the roller.

The upper sheet unwinder may be configured to include an unwinder roller on which the upper sheet is wound, an unwinder roller supporter supporting both ends of the unwinder roller, and a roller cylinder that moves the unwinder roller. .

The upper sheet rewinder includes a rewinder roller on which the upper sheet is wound, a rewinder roller support part supporting both ends of the rewinder roller, a roller cylinder that moves the rewinder roller, and a pulling operation of the upper sheet and a winding operation of the upper sheet. It may be configured to include a rewind roller driving part that rotates the rewind roller.

The upper sheet joining portion includes a pair of roller installation frames spaced apart from each other on both sides of the main frame; A first heating driving roller and a second heating driving roller installed on the roller installation frame; A first heating driven roller and a second heating driven roller installed to face the first heating driving roller and the second heating driving roller; a heating roller driving unit that rotates the first heating driving roller and the second heating driving roller; And a heating roller lifting unit that adjusts the separation distance between the first heating driving roller and the first heating driven roller and the separation distance between the second heating driving roller and the second heating driven roller. It may be configured to include; .

The heating roller lifting unit includes a lifting block disposed inside the roller installation frame and having a built-in bearing so that the roller shafts of the first heating driven roller and the second heating driven roller are rotatably connected; a lifting cylinder installed on the upper part of the roller installation frame and having a rod connected to the lifting block; and a slide unit installed on a side wall facing the lifting block and the roller installation frame.

The inorganic sheet unwinder may include an unwinder roller on which the inorganic sheet is wound, an unwinder roller support part supporting both ends of the unwinder roller, and a roller cylinder that moves the unwinder roller. .

The inorganic sheet lamination unit includes a first lamination heating roller and a second lamination heating roller arranged to face each other so that the lower sheet and the inorganic sheet are introduced while being laminated, and a lamination heating roller support portion supporting both ends of the first and second lamination heating rollers. , and a lamination roller adjustment unit that adjusts the separation distance between the first and second lamination heating rollers.

In particular, the apparatus for manufacturing a composite solid electrolyte separator for a secondary battery according to the present invention includes a cutting part for cutting the surplus part of the inorganic sheet laminated to the lower sheet, a cutting sheet winding part for wrapping the surplus part of the inorganic sheet, and the cutting part. It is characterized by comprising a surplus sheet processing unit provided with a cutting sheet pulling driving unit that rotates the sheet winding unit.

At this time, the cut sheet winding unit may be provided with a winding wheel on which the surplus portion is wound, and a wheel axis coupled to the center of the winding wheel.

The cutting sheet pulling driving unit includes a winding unit frame in which a tension bar through which the surplus part passes is formed and the wheel axis is rotatably installed, a driven pulley installed on the wheel axis, a belt at one end connected to the driven pulley, and the other end of the belt. It may be configured to include a driving pulley to which this is connected, and a wheel rotation motor to which the driving pulley is installed on an output shaft.

According to the apparatus for manufacturing a composite solid electrolyte separator for secondary batteries according to the present invention, a composite solid electrolyte separator with a lifespan and heat resistance similar to that of an all-solid separator is uniformly distributed on an inorganic sheet through an automated flow process to achieve even thickness and density. It can be manufactured effectively while forming, and through this, stable quality and productivity can be secured, and manufacturing costs and maintenance costs can be reduced.

1 is a schematic diagram illustrating the technical idea of the apparatus for manufacturing a composite solid electrolyte separator for secondary batteries according to the first embodiment of the present invention;
Figure 2 is an overall appearance diagram for explaining the apparatus for manufacturing a composite solid electrolyte separator for secondary batteries according to the first embodiment of the present invention;
Figures 3a and 3b are perspective views showing the main components of the composite solid electrolyte separator manufacturing apparatus for secondary batteries according to the first embodiment of the present invention. Figure 3a shows the lower cover combined, and Figure 3b shows the lower cover removed. It indicates the status.
Figure 4 is a front view showing the main components of the apparatus for manufacturing a composite solid electrolyte separator for secondary batteries according to the first embodiment of the present invention;
Figure 5 is a perspective view showing the lower sheet unwinder of the composite solid electrolyte separator manufacturing apparatus for secondary batteries according to the first embodiment of the present invention;
Figure 6 is a perspective view showing the upper sheet lamination portion of the composite solid electrolyte separator manufacturing apparatus for secondary batteries according to the first embodiment of the present invention;
Figure 7 is a perspective view showing the upper sheet winder of the composite solid electrolyte separator manufacturing apparatus for secondary batteries according to the first embodiment of the present invention;
Figure 8 is a perspective view showing the inorganic sheet joining portion and the surplus sheet processing portion of the composite solid electrolyte separator manufacturing apparatus for secondary batteries according to the first embodiment of the present invention;
Figure 9 is an enlarged perspective view showing the inorganic sheet lamination portion of the composite solid electrolyte separator manufacturing device for secondary batteries according to the first embodiment of the present invention;
Figure 10a is a perspective view showing the surplus sheet processing unit of the composite solid electrolyte separator manufacturing apparatus for secondary batteries according to the first embodiment of the present invention;
Figure 10b is an enlarged view of part A of Figure 10a.
Figure 11 is a schematic configuration diagram to explain the technical idea of the manufacturing apparatus for a composite solid electrolyte separator for secondary batteries according to the second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the accompanying drawings, FIGS. 1 to 11, and the same reference numerals will be given to the same components in FIGS. 1 to 11.

Meanwhile, in each drawing, detailed descriptions of the configuration and its operations and effects that can be easily understood by a person with ordinary knowledge in the field from general techniques are simplified or omitted. In addition, since the present invention is characterized by an apparatus for manufacturing a composite solid electrolyte separator for a secondary battery, the related parts will be shown and explained, and the description of the remaining parts will be simplified or omitted.

Figure 1 is a schematic configuration diagram to explain the technical idea of a composite solid electrolyte separator manufacturing device for secondary batteries according to the first embodiment of the present invention.

Referring to Figure 1, the apparatus for manufacturing a composite solid electrolyte separator for a secondary battery according to the first embodiment of the present invention is an apparatus for manufacturing a composite solid electrolyte separator in which the composite solid electrolyte is evenly distributed at an appropriate thickness on the surface of the separator, It is provided with a lower sheet supply unit (2), an electrolyte supply unit (3), an electrolyte treatment unit (4), an inorganic sheet supply unit (5), an inorganic sheet lamination unit (6), and a separator winding unit (7).

The lower sheet supply unit 2 is a component that supplies the lower sheet (a). There are no particular restrictions on its shape or structure as long as it can smoothly supply the lower sheet (c), but the lower sheet can be unscrewed as in a specific embodiment described later. It may be configured to include a lower sheet unwinder (2a) for supply (unwind).

The electrolyte supply unit (3) is a component that supplies the composite solid electrolyte (b) to the surface of the lower sheet (a) supplied from the lower sheet supply unit (2). There are no particular restrictions on its shape or structure as long as the electrolyte can be easily supplied. , It may be configured to include a dispenser (3a) that supplies a complex solid electrolyte to the surface of the lower sheet drawn out from the lower sheet unwinder (2a).

The electrolyte processing unit (4) is a component that evenly distributes the composite solid electrolyte (b) supplied to the surface of the lower sheet (a), and the upper sheet supply unit (41) supplies the upper sheet (c) to the upper surface of the composite solid electrolyte. , an upper sheet lamination unit 42 that combines the upper sheet (c) supplied from the upper sheet supply unit 41 to face the lower sheet (a), and the upper sheet (c) via the upper sheet lamination unit 42. It may be configured to include an upper sheet separation portion 43 that separates the.

The inorganic sheet supply unit 5 is a component that supplies the inorganic sheet d to the upper surface of the composite solid electrolyte via the electrolyte treatment unit 4. There is no particular limitation as long as the inorganic sheet can be easily supplied, but the inorganic sheet is supplied. It may be configured to include an inorganic sheet unwinder (5a).

The inorganic sheet lamination unit (6) is a component that laminates the inorganic sheet (d) supplied from the inorganic sheet supply unit (5) to face the lower sheet (a). If the lamination operation can be easily performed, the shape or structure can be changed. Although there is no particular limitation, it may be configured to include a heating and pressurizing portion (not shown) that laminates the inorganic sheet pulled out from the inorganic sheet unwinder 5a to the upper surface of the lower sheet.

The separator winding unit 7 is a component for winding and storing the separator s formed while passing through the inorganic sheet lamination unit 6. There is no particular limitation as long as the separator s can be easily wound and stored. It may be configured to include a separator winder (7a) through which the separator formed while passing through the sheet joining portion (6) is wound (rewind).

Meanwhile, the upper sheet supply unit 41 may include an upper sheet unwinder (41a) that supplies the upper sheet (c) to the upper surface of the lower sheet (a) via the dispenser (3a).

The upper sheet joining portion 42 may be configured to include a heating press portion (not shown) that applies heat and pressurizes the lower sheet (a) and the upper sheet (c) so that they overlap each other.

The upper sheet separation portion 43 may be configured to include an upper sheet tree winder 43a through which the upper sheet c is separated and wound via the upper sheet joining portion 42.

Meanwhile, the aforementioned lower sheet (a) is a film-shaped sheet that is adhesively attached to the lower side of the composite solid electrolyte (b) and is made of thermoplastic resin, thermosetting resin, etc. And the lower sheet (a) functions as a protective release paper that is separated and removed in the process of manufacturing a secondary battery using the separator (s) manufactured according to the present invention.

And, the top sheet (c) is a film-shaped sheet that is adhesively attached to the upper side of the composite solid electrolyte and is composed of a sheet commonly called Teflon. This upper sheet (c) functions to form a composite solid electrolyte layer of even density by spreading the composite solid electrolyte (b) in an equal distribution during the manufacturing process of the separator according to the present invention, and is used in the upper sheet unwinder (41a). After being withdrawn and used, if it is wound into a roll on the upper sheet winder (43a), it can be moved and installed on the upper sheet unwinder (41a) and reused.

In addition, the inorganic sheet (d) can be made of various thin-film inorganic fiber sheets proposed for application to composite solid electrolytes, but in this embodiment, it is composed of a glass fiber sheet.

Meanwhile, in the present invention, the composite solid electrolyte (b) refers to an electrolyte formed in a neither solid nor liquid state by mixing the powder applied to the separator (s) and the electrolyte solution. In this example, PEO (polyethylene oxide) powder and Apply a mixture of electrolyte solutions.

Figure 2 is an overall appearance diagram illustrating the apparatus for manufacturing a composite solid electrolyte separator for secondary batteries according to the first embodiment of the present invention, and Figures 3a and 3b are diagrams showing the manufacturing of a composite solid electrolyte separator for secondary batteries according to the first embodiment of the present invention. As a perspective view showing the main components of the device, Figure 3a shows the lower cover combined, and Figure 3b shows the lower cover removed. Figure 4 is a front view showing the main components of the composite solid electrolyte separator manufacturing device for secondary batteries according to the first embodiment of the present invention, and Figure 5 is a front view of the composite solid electrolyte separator manufacturing device for secondary batteries according to the first embodiment of the present invention. This is a perspective view showing the lower sheet unwinder.

Referring to Figures 1 to 5, the composite solid electrolyte separator manufacturing apparatus (M) for secondary batteries according to the first embodiment of the present invention includes the above-described lower sheet unwinder (2a) and dispenser (3a) on the main frame (1). ), upper sheet unwinder (41a), upper sheet lamination part 42, upper sheet tree winder (43a), inorganic sheet unwinder (5a), inorganic sheet lamination part (6), and separator winder (7a) is composed.

The main frame 1 is manufactured in a roughly rectangular parallelepiped shape using profiles 11 or shaped steel materials, and a lower cover 12 is installed on its outer surface.

As shown in Figure 2, the main frame 1 is equipped with a clean room 15 surrounding its exterior to store the above-mentioned major components cleanly and safely. Here, since the clean room 15 is a well-known structure, detailed description will be omitted.

Additionally, reference numeral F in FIG. 2 refers to a composite solid electrolyte manufacturing device for secondary batteries, and the composite solid electrolyte manufactured here is supplied to the dispenser 3a.

The lower sheet unwinder (2a) is a component for supplying the lower sheet (b) as shown in Figures 2 to 5, and includes an unwinder roller 21 on which the lower sheet is wound, and an unwinder roller ( 21) An unwinder roller support portion (22) that supports both ends, a roller cylinder (23) that moves the unwinder roller (21), and a winder base plate (24) on which the unwinder roller support portion (22) is installed. is provided.

The unwinder roller 21 is installed on the roller shaft 211 connected to the unwinder roller support 22 and the roller shaft 211 into which the lower sheet roll in which the lower sheet (a) is wound in a roll shape is inserted. A roll seating portion 212 and the like are provided.

The unwinder roller support part 22 includes a roller support plate 221, a shaft support member 222 installed on the roller support plate 221 so that the roller shaft 211 is installed, and a connection link connected to the shaft support member 222 ( 223), etc. are provided.

The roller cylinder 23 is composed of a hydraulic cylinder whose rod is connected to the connecting link 223. When the rod is moved forward when replacing the lower seat roll, the shaft support member 222 connected to the connecting link 223 is moved. By moving it to widen the gap, you can easily perform attachment and detachment work, thereby improving the convenience of work.

As shown in Figures 1 and 4, the dispenser (3a) is a component that supplies the composite solid electrolyte (b) to the surface of the lower sheet (a) drawn out from the lower sheet unwinder (2a). An electrolyte inlet (31) into which the composite solid electrolyte supplied after being manufactured from the manufacturing device (F) flows, and an electrolyte inlet (31) to discharge the composite solid electrolyte (b) to the surface of the lower sheet (a). A plurality of electrolyte discharge nozzles 32 are arranged.

The upper sheet unwinder 41a is a component for supplying the upper sheet (c), and is arranged to supply the upper sheet (c) to the upper surface of the lower sheet (a) via the dispenser (3a).

For example, the upper sheet unwinder 41a includes an unwinder roller 411 on which the upper sheet (c) is wound, and an unwinder roller support portion supporting both ends of the unwinder roller 411, as shown in Figure 4. (412), a roller cylinder (not shown) that moves the unwinder roller (411) is provided. Here, since the detailed configuration of the upper sheet unwinder 41a is similar to the lower sheet unwinder 2a shown in Figure 5, detailed description is omitted.

The attached drawing, Figure 6, is a perspective view showing the upper sheet joining portion of the composite solid electrolyte separator manufacturing apparatus for secondary batteries according to the first embodiment of the present invention.

Referring to Figures 3 to 6, the upper sheet bonding part 42 may be composed of a heating and pressing part that applies heat and pressurizes the lower sheet (a) and the upper sheet (c) so that they overlap each other, and the composite solid electrolyte The lower sheet and the upper sheet are overlapped and adhered to each other, and pressure is applied to the composite solid electrolyte disposed between them, thereby maintaining the thickness and density constant.

As shown in FIG. 6, the heating pressurizing portion applied to the upper sheet joining portion 42 is installed on a pair of roller installation frames 421 and roller installation frames 421 spaced apart on both sides of the main frame 1. The first heating driving roller 422 and the second heating driving roller 423, the first heating driven roller 424 installed on the upper side facing the first heating driving roller 422 and the second heating driving roller 423. and a second heating driven roller 425, a heating roller driving part 426 that rotates the first heating driving roller 422 and the second heating driving roller 423, and between the first heating driving roller and the first heating driven roller. It consists of a heating roller lifting unit 427 that adjusts the separation distance between the second heating driving roller and the second heating driven roller.

The heating roller driving unit 426 is a driving unit for rotating the first heating driving roller 422 and the second heating driving roller 423, and includes a driving motor 4262 and a driving motor 4261 installed on the motor base 4261. A drive pulley 4263 installed on the motor shaft, a belt 4264 installed on one side of the drive pulley 4263, and a belt installed on one side of the first heating drive roller 422 and the second heating drive roller 423. A driven pulley 4265 is provided to which the other side is connected.

The heating roller lifting unit 427 adjusts the height of the first heating driven roller 424 and the second heating driven roller 425, so that the first heating driving roller 422 and the second heating driving roller 423 face each other. ) to adjust the clearance between the unit and the unit, and is composed of an elevation block (4271), an elevation cylinder (4272), and a slide unit (4273).

The lifting block 4271 has a built-in bearing so that the roller shafts of the first heating driven roller 424 and the second heating driven roller 425 are rotatably connected and is disposed inside the roller installation frame 421.

The lifting cylinder 4272 is installed on the upper part of the roller installation frame 421 and consists of a hydraulic cylinder whose rod is connected to the lifting block 4271.

The slide unit 4273 is a component installed on the facing side wall of the lifting block 4271 and the roller installation frame 421 to guide the lifting operation, and is a guide rail (4273a) installed on the inner surface of the side wall of the roller installation frame 421. ) and a guide block (4273b) inserted into the guide rail (4273a) and installed on the outer surface of the side wall of the lifting block (4271).

In addition, the first and second heating driving rollers 422 and 423 and the first and second heating driven rollers 424 and 425 have heater rods (not shown) or heating wires (not shown) built into them to generate electricity when power is supplied. It is configured to generate heat by resistance. In addition, the first and second heating drive rollers 422 and 423 and the first and second heating driven rollers 424 and 425 have a built-in temperature sensor (not shown), and when a temperature detection signal from the temperature sensor is applied to the control unit, the set The power is turned on/off by comparing the temperature.

Figure 7 is a perspective view showing the upper sheet winder of the composite solid electrolyte separator manufacturing apparatus for secondary batteries according to the first embodiment of the present invention.

Referring to Figure 7, the upper sheet winder (43a) is a component in which the upper sheet (c) is separated and wound via the heating pressurized portion applied as the upper sheet joining portion (42), and is a rewinder in which the upper sheet (c) is wound. Roller 431, a rewinder roller support part 432 that supports both ends of the rewinder roller 431, a roller cylinder 433 that moves the rewinder roller 431, and a rewinder base plate 434 on which the rewinder roller support part 431 is installed. , and a rewinder roller drive unit 435 that rotates the rewinder roller 431 to perform a pulling operation of the upper sheet (c) and a winding operation of the upper sheet.

The rewinder roller 431 is equipped with a roller shaft 4311 connected to the rewinder roller support portion 432 and a roll seating portion 4312 installed on the roller shaft 4311 around which the upper sheet (c) is wound in a roll shape. there is.

The unwinder roller support part 432 includes a roller support plate 4321, a shaft support member 4322 installed on the roller support plate 4321 so that the roller shaft 4311 is installed, and a connection link connected to the shaft support member 4322 ( 4323) etc. are provided.

The roller cylinder 433 is composed of a hydraulic cylinder whose rod is connected to the connecting link 4323. When the rod is moved forward when replacing the upper sheet roll on which the upper sheet is wound, the axial support connected to the connecting link 4323 By moving the member 4322, the gap can be widened and attachment and detachment can be easily performed, thereby improving the convenience of work.

The rewind roller drive unit 435 is a drive unit for rotating the roller shaft 4311, including a drive motor 4352 installed on the motor base 4351, a drive pulley 4353 installed on the motor shaft of the drive motor 4352, A belt 4354 is installed on one side of the drive pulley 4353, and a driven pulley 4355 is installed on one side of the roller shaft 4311 and connected to the other side of the belt.

Meanwhile, the inorganic sheet unwinder (5a) is a component that supplies the inorganic sheet (d), and includes an unwinder roller (51) on which the inorganic sheet is wound, and an unwinder that supports both ends of the unwinder roller (51). A roller support unit 52 and a roller cylinder 53 that move the unwind roller 52 are provided.

Here, since the detailed configuration of the inorganic sheet unwinder 5a is similar to the lower sheet unwinder 2a described above, detailed description will be omitted.

Figure 8 is a perspective view showing the inorganic sheet bonding portion and the surplus sheet processing portion of the composite solid electrolyte separator manufacturing apparatus for secondary batteries according to the first embodiment of the present invention, and Figure 9 is a composite solid electrolyte for secondary batteries according to the first embodiment of the present invention. An enlarged perspective view showing the inorganic sheet lamination portion of the separator manufacturing device, Figure 10a is a perspective view showing the surplus sheet processing portion of the composite solid electrolyte separator manufacturing device for secondary batteries according to the first embodiment of the present invention, and Figure 10b is an enlarged view of portion A of Figure 10a. am.

Referring to Figure 8, the inorganic sheet lamination unit 6 is a heating pressurizing unit that laminates the inorganic sheet (d) drawn out from the inorganic sheet unwinder (5a) to the upper surface of the lower sheet (a), and is a first lamination heating roller. (61), the second composite heating roller (62), the composite heating roller support portion 63 supporting both ends of the first and second composite heating rollers (61,62), the separation distance between the first and second composite heating rollers There is a lamination roller adjustment unit 64 that adjusts.

The first lamination heating roller 61 and the second lamination heating roller 62 are rollers arranged to face each other so that the lower sheet (a) and the inorganic sheet (d) are introduced while being laminated, and a heater rod (not shown) or A heating wire (not shown) is built in to generate heat by electrical resistance when power is supplied, and a temperature sensor (not shown) is built in.

The lamination roller adjusting unit 64 is provided with a forward and backward moving block 641, a guide member 642, and a forward and backward moving cylinder 643, and is configured to move the first lamination heating roller 61 back and forth, but the lamination roller 61 moves the second lamination roller 61 back and forth. The heating roller 62 can also be configured to move back and forth.

The forward and backward moving block 641 has a built-in bearing so that the roller shaft of the first composite heating roller 61 is rotatably connected.

The guide member 642 is formed as a square bar installed vertically on the composite heating roller support portion 63 to guide the movement of the forward and backward moving block 641.

The forward and backward moving cylinder 643 is composed of a hydraulic cylinder whose rod is connected to the forward and backward moving block 641.

Referring to Figures 10A and 10B, the apparatus for manufacturing a composite solid electrolyte separator for a secondary battery according to the present invention is comprised of a surplus sheet processing unit 9 that cuts and processes the surplus portion formed at the edge of the inorganic sheet (or lower sheet). there is.

The surplus sheet processing unit 9 includes a cutting unit 91 that cuts the surplus portion (d2) of the inorganic sheet (d) laminated to the lower sheet (a), and a cut sheet winding portion that winds the surplus portion of the inorganic sheet (d). (92), and a cutting sheet pulling unit (93) that rotates the cutting sheet winding unit (92).

The cutting unit 91 cuts the excess portions (d2) on both sides of the inorganic sheet (d), which is adhered to the composite solid electrolyte (b) and moves downward while passing through the first and second lamination heating rollers (61, 62). As a device, the cutter body 912 is installed on the cutter installation plate 911 protruding from the main frame 1, the cutter shaft 913 is rotatably installed on the cutter body 912, and the cutter shaft 913 is installed. A rotating blade 914 is provided.

Here, the cutter installation plate 911 is formed of a plate-shaped member, and a cutter slit 911a is drilled at the installation site of the rotary blade 914 to prevent damage to the rotary blade.

The cutting sheet pulling unit 93 includes a winding frame 931 formed with a tension bar 931a through which the surplus portion d2 of the inorganic sheet d2 passes, a driven pulley 932 installed on the wheel axis 922, and a driven pulley 932. It is provided with a belt 933 whose one end is connected to the pulley 932, a drive pulley 934 whose other end is connected to the belt 933, and a wheel rotation motor 935 where the drive pulley 934 is installed on the output shaft.

The cut sheet winding unit 92 is provided with a winding wheel 921 on which the surplus portion d2 is wound, and a wheel axle 922 coupled to the center of the winding wheel 921 and installed on the winding unit frame 931. .

Meanwhile, the separator winder (7a) winds the separator (s) formed to form layers in the order of the inorganic sheet (d), the composite solid electrolyte (b), and the lower sheet (a) while passing through the inorganic sheet lamination unit (6). The components include a separator roller 71 on which the separator s is wound, a separator roller support part 72 that supports both ends of the separator roller 71, a roller cylinder (not shown) that moves the separator roller 71, and a lower sheet. A separator roller drive unit (not shown) is provided to rotate the separator roller 71 to perform the pulling operation for pulling out (a) and the winding operation of the separator (s).

Since the detailed configuration and operational effects of the separator winder 7a are similar to the above-described upper sheet winder 43a, detailed description is omitted.

Meanwhile, reference numeral 8 in Figure 4 is a tension device that allows the lower sheet (a), upper sheet (c), inorganic sheet (d), and separator (s) to be transported while maintaining tension, and is used to properly maintain tension. Any structure that can be configured can be configured without any particular restrictions on structure or form, but a typical structure can be configured with a tension roller shaft.

Hereinafter, the operation of the apparatus for manufacturing a composite solid electrolyte separator for secondary batteries according to the first embodiment of the present invention will be briefly described.

The manufacturing process of the composite solid electrolyte separator for secondary batteries using the composite solid electrolyte separator manufacturing device for secondary batteries according to the first embodiment of the present invention is that the lower sheet (a) is first wound in a roll form on the lower sheet unwinder (2a). Install the lower seat roll, install the upper seat roll with the upper sheet (c) wound in the form of a roll on the upper sheet unwinder (41a), and install the inorganic sheet roll with the inorganic sheet (d) wound in the form of a roll. Installed on the sheet unwinder (5a). In addition, the lower sheet and the inorganic sheet are pre-drawn and fixed to some extent on the separator roller 71 of the separator winder 7a, and the upper sheet c of the upper sheet unwinder 41a is also pulled out to form an upper sheet tree winder ( Wrap it around the rewinder roller (431) of 43a) and secure it.

In this state, the rewind roller drive unit 435 of the separator winder 7a and the upper sheet winder 43a is operated to apply a pulling force according to the rotation operation, and the upper sheet lamination unit 42 of the electrolyte treatment unit 4 , power is supplied to the heating pressurizing part of the inorganic sheet lamination part 6 to heat it, and various motors (driving motor 4262 of the heating roller driving part 426, wheel rotation motor of the cutting sheet pulling driving part 93 ( 935)) operates.

In a state in which the lower sheet (b) of the lower sheet unwinder (2a) is pulled out and moved according to the rotation of the above-described membrane winder (7a), the composite solid electrolyte supplied from the composite solid electrolyte manufacturing device (F) is dispensed. After flowing into the electrolyte inlet 31 of (3a), it is ejected onto the surface of the lower sheet (a) through a plurality of electrolyte discharge nozzles 32.

Then, the upper sheet (c) pulled out from the upper sheet unwinder (41a) is supplied to the upper side of the composite solid electrolyte (b) placed on the lower sheet (a), and then the first heating of the upper sheet lamination portion (42) is performed. The composite solid electrolyte (b) is formed by heat and pressure while passing between the driving roller 422 and the first heating driven roller 424, and between the second heating driving roller 423 and the second heating driven roller 425. It is spread out evenly and processed to have an even density.

In this way, when passing through the second heating driving roller 423 and the second heating driven roller 425, the upper sheet (c) adhered to the upper surface of the composite solid electrolyte (b) is pulled by the pulling action of the upper sheet winder (43a). As it moves, it separates and then winds up.

Subsequently, the inorganic sheet (d) drawn out from the inorganic sheet unwider (5a) is supplied to the upper side of the composite solid electrolyte (b) adhered to the lower sheet (a), and then the first and second composite heating rollers (61, 62) As it enters the space, it adheres due to heat and pressure. In this way, after passing through the first and second lamination heating rollers 61 and 62, the surplus portion d2 of the inorganic sheet d is cut by the cutting part 91 as shown in FIGS. 10A and 10B. By the operation of the cutting sheet pulling unit 93, the cutting sheet is wound around the cutting sheet winding unit 92 and a separator s is formed.

Then, the separator (s) from which the surplus portion (d2) has been cut is wound by the rotating action of the separator winder (7a), completing the manufacturing process.

Hereinafter, another embodiment according to the present invention will be described, but detailed description of components similar to those shown in the above-described first embodiment will be omitted and description will focus on components having differences. In addition, in the following second embodiment, detailed descriptions or drawings of components configured similarly to the first embodiment will be omitted. In addition, since the operation of the apparatus for manufacturing a composite solid electrolyte separator for secondary batteries according to the second embodiment of the present invention is similar to the above-described first embodiment, description thereof is omitted.

Figure 11 is a schematic configuration diagram to explain the technical idea of the manufacturing apparatus for a composite solid electrolyte separator for secondary batteries according to the second embodiment of the present invention.

Referring to FIG. 11, the apparatus for manufacturing a composite solid electrolyte separator for a secondary battery according to the second embodiment of the present invention is a device in which a lower sheet (a) and an inorganic sheet (d) are overlapped and adhered with a composite solid electrolyte (b) interposed therebetween. It is configured to manufacture a separator (s) in the form of a separator (s), but is characterized in that the structure is made simpler and simpler than the first embodiment described above by eliminating the device for supplying and separating the upper sheet.

In addition, the apparatus for manufacturing a composite solid electrolyte separator for secondary batteries according to the second embodiment of the present invention includes a lower sheet supply unit 2 that supplies the lower sheet (a), similar to the first embodiment described above, and a lower sheet supply unit (2) supplied from the lower sheet supply unit. An electrolyte supply unit (3) that supplies the composite solid electrolyte (b) to the surface of the lower sheet, an electrolyte treatment unit (4) that evenly distributes the composite solid electrolyte supplied to the surface of the lower sheet, and an upper surface of the composite solid electrolyte via the electrolyte treatment unit. an inorganic sheet supply unit (5) that supplies inorganic sheets to the inorganic sheet supply unit, an inorganic sheet lamination unit (6) that laminates the inorganic sheets supplied from the inorganic sheet supply unit to face the lower sheet, and a separator that stores the separator formed while passing through the inorganic sheet lamination unit. It is comprised including a winding part (7).

The lower sheet supply unit 2 may be configured to include a lower sheet unwinder 2a that supplies the lower sheet c, similar to the first embodiment.

The electrolyte supply unit 3 may be configured to include a dispenser 3a that supplies a complex solid electrolyte to the surface of the lower sheet drawn out from the lower sheet unwinder 2a, similar to the first embodiment described above.

The electrolyte treatment unit 4 is a component that evenly distributes the composite solid electrolyte (b) supplied to the surface of the lower sheet (a), and may be configured to include a heating and pressurizing portion that heats and pressurizes the composite solid electrolyte.

Here, the heating and pressurizing unit may be composed of upper and lower heating rollers 45 and 45' that apply heat and pressurize through a rotational motion, similar to the first embodiment described above.

In addition, the heating and pressurizing part of the electrolyte treatment unit 4 may be composed of a heating bar (not shown) that is formed in a bar shape and disposed in the width direction of the lower sheet (a). At this time, it is preferable that the heating bar is configured to be able to be raised and lowered so that the thickness of the composite solid electrolyte (b) can be adjusted.

The inorganic sheet supply unit 5 may be configured to include an inorganic sheet unwinder 5a similar to the first embodiment described above.

The inorganic sheet lamination unit 6 may be configured to include a heating pressurization unit (not shown) that laminates the inorganic sheet (d) pulled out from the inorganic sheet unwinder (5a) to the upper surface of the lower sheet (a).

Here, the heating and pressurizing unit may be composed of upper and lower heating rollers 65 and 65' that apply heat and pressurize through a rotational motion, similar to the first embodiment described above.

The separator winding unit 7 may include a separator winder 7a on which the formed separator is wound while passing through the inorganic sheet joining unit 6.

As described above, the apparatus for manufacturing a composite solid electrolyte separator for secondary batteries according to the second embodiment of the present invention can eliminate the upper sheet lamination portion 42 and the upper sheet separation portion 43 shown in the first embodiment, so the structure is improved. Because it is concise and simple, manufacturing and maintenance costs can be further reduced and productivity can be improved.

The configuration and operation of the composite solid electrolyte separator manufacturing device for secondary batteries according to an embodiment of the present invention described above have been described, but this is illustrative and those skilled in the art will not depart from the technical spirit of the present invention. It will be understood that it is possible to replace and modify some of the above-described embodiments.

Therefore, the scope of protection of the present invention should be understood to extend to the invention described in the patent claims and equivalents thereof.

1: Main frame 2: Lower sheet supply unit
2a: Lower sheet unwinder 3: Electrolyte supply unit
3a: Dispenser 4: Electrolyte processing unit
41: Upper sheet supply unit 41a: Upper sheet unwinder
42: Upper sheet joint part 43: Upper sheet separation part
43a: Upper sheet tree winder 5: Inorganic sheet supply unit
5a: Inorganic sheet unwinder 6: Inorganic sheet lamination unit
61: 1st composite heating roller 62: 2nd composite heating roller
63: Composite heating roller support unit 64: Composite roller adjustment unit
7: Separator winding unit 7a: Separator winder
8: Tension device 9: Surplus sheet processing unit
91: Cutting part 92: Cut sheet winding part
93: Cutting sheet pulling eastern part a: Lower sheet
b:composite solid electrolyte c:top sheet
d: inorganic sheet s: separator

Claims (12)

delete delete delete In the composite solid electrolyte separator manufacturing device for secondary batteries,
A lower sheet supply unit that supplies a lower sheet; An electrolyte supply unit that supplies a complex solid electrolyte to the surface of the lower sheet supplied from the lower sheet supply unit; an electrolyte treatment unit that evenly distributes the composite solid electrolyte supplied to the surface of the lower sheet; an inorganic sheet supply unit that supplies an inorganic sheet to the upper surface of the composite solid electrolyte via the electrolyte treatment unit; an inorganic sheet lamination unit that laminates the inorganic sheet supplied from the inorganic sheet supply unit to face the lower sheet; And a separator winding portion where the separator formed while passing through the inorganic sheet lamination portion is wound,
The electrolyte processing unit includes an upper sheet supply unit that supplies an upper sheet to the upper surface of the composite solid electrolyte; An upper sheet lamination unit that combines the upper sheet supplied from the upper sheet supply unit to face the lower sheet; And an upper sheet separation part that separates the upper sheet via the upper sheet joining part,
The lower sheet supply unit includes a lower sheet unwinder that supplies the lower sheet,
The electrolyte supply unit includes a dispenser that supplies a complex solid electrolyte to the surface of the lower sheet pulled out from the lower sheet unwinder,
The upper sheet supply unit includes an upper sheet unwinder that supplies the upper sheet to the upper surface of the lower sheet via the dispenser,
The upper sheet joining portion includes a heating press portion that applies heat and pressurizes the lower sheet and the upper sheet to overlap each other,
The upper sheet separation unit includes an upper sheet tree winder through which the upper sheet is separated and wound via the upper sheet joining part,
The inorganic sheet supply unit includes an inorganic sheet unwinder that supplies the inorganic sheet,
The inorganic sheet lamination unit includes a heating and pressurizing unit that laminates the inorganic sheet pulled out from the inorganic sheet unwinder to the upper surface of the lower sheet,
The separator winding unit includes a separator winder on which the separator formed while passing through the inorganic sheet lamination unit is wound.
delete According to clause 4,
The lower sheet unwinder includes an unwinder roller on which the lower sheet is wound, an unwinder roller support part supporting both ends of the unwinder roller, and a roller cylinder that moves the unwinder roller,
The separator winder includes a separator roller on which the separator is wound, a separator roller supporter supporting both ends of the separator roller, a roller cylinder that moves the separator roller, and a pulling operation of the lower sheet and a winding operation of the separator. A composite solid electrolyte separator manufacturing device for secondary batteries, comprising a separator roller driving unit that rotates a roller.
According to clause 4,
The upper sheet unwinder includes an unwinder roller on which the upper sheet is wound, an unwinder roller support part supporting both ends of the unwinder roller, and a roller cylinder that moves the unwinder roller,
The upper sheet rewinder includes a rewinder roller on which the upper sheet is wound, a rewinder roller support part supporting both ends of the rewinder roller, a roller cylinder that moves the rewinder roller, and a pulling operation of the upper sheet and a winding operation of the upper sheet. An apparatus for manufacturing a composite solid electrolyte separator for a secondary battery, comprising a rewinder roller driving unit that rotates the rewinder roller.
According to clause 4,
The upper sheet joint part,
A pair of roller installation frames installed spaced apart on both sides of the main frame;
A first heating driving roller and a second heating driving roller installed on the roller installation frame;
A first heating driven roller and a second heating driven roller installed to face the first heating driving roller and the second heating driving roller;
a heating roller driving unit that rotates the first heating driving roller and the second heating driving roller; and
A heating roller lifting unit that adjusts the separation distance between the first heating driving roller and the first heating driven roller and the separation distance between the second heating driving roller and the second heating driven roller; secondary comprising a. Composite solid electrolyte separator manufacturing device for batteries.
According to clause 8,
The heating roller lifting part,
a lifting block installed inside the roller installation frame and having a built-in bearing so that the roller axes of the first heating driven roller and the second heating driven roller are rotatably connected;
a lifting cylinder installed on the upper part of the roller installation frame and having a rod connected to the lifting block; and
A composite solid electrolyte separator manufacturing device for a secondary battery, comprising: a slide unit installed on a side wall facing the lifting block and the roller installation frame.
According to clause 4,
The inorganic sheet unwinder includes an unwinder roller on which the inorganic sheet is wound, an unwinder roller support part supporting both ends of the unwinder roller, and a roller cylinder that moves the unwinder roller,
The inorganic sheet lamination unit includes a first lamination heating roller and a second lamination heating roller arranged to face each other so that the lower sheet and the inorganic sheet are introduced while being laminated, and a lamination heating roller support portion supporting both ends of the first and second lamination heating rollers. , And a composite solid electrolyte separator manufacturing device for a secondary battery, comprising a lamination roller adjustment unit for adjusting the separation distance between the first and second lamination heating rollers.
According to clause 10,
A surplus sheet provided with a cutting part for cutting the surplus part of the inorganic sheet laminated to the lower sheet, a cutting sheet winding part for winding the surplus part of the inorganic sheet, and a cutting sheet pulling driving part for rotating the cut sheet winding part. A composite solid electrolyte separator manufacturing device for secondary batteries, comprising a processing unit.
According to clause 11,
The cut sheet winding unit includes a winding wheel on which the surplus portion is wound, and a wheel axis coupled to the center of the winding wheel,
The cutting sheet pulling driving unit includes a winding unit frame in which a tension bar through which the surplus part passes is formed and the wheel axis is rotatably installed, a driven pulley installed on the wheel axis, a belt at one end connected to the driven pulley, and the other end of the belt. An apparatus for manufacturing a composite solid electrolyte separator for a secondary battery, comprising a driving pulley connected to this and a wheel rotation motor on which the driving pulley is installed on an output shaft.

Images