Pelleting apparatus, pelletizing system, and method for manufacturing dry cell battery electrodes

Abstract

The objective is to improve pelletizing equipment, pelletizing systems, and methods for pelletizing dry cell electrode materials to provide greater flexibility throughout the entire manufacturing process. [Solution] This disclosure relates to a pelletizing apparatus (100) for a manufacturing process for dry cell electrodes. The pelletizing apparatus (100) according to an embodiment includes two rolls (101, 102) arranged parallel to each other and rotating in opposite directions. At least one roll (101, 102) includes a plurality of cavities (103) configured to form pellets. The cavities (103) have a structure based on the desired shape and size of the pellets.

Description

Technical Field

[0001] The present disclosure relates to a pelletizing apparatus, a pelletizing system, and a method for manufacturing a dry battery electrode.

Background Art

[0002] Transportation means for objects and people have been developed using electric power as a power source. An electric vehicle is a vehicle that is permanently or temporarily propelled by an electric motor using the energy stored in a secondary battery. Electric vehicles are driven only by batteries, such as so-called Battery Electric Vehicles (BEVs), or are driven by a combination of an electric motor and, for example, an existing combustion engine, such as so-called Plugin Hybrid Electric Vehicles (PHEVs). BEVs and PHEVs use large-capacity rechargeable batteries designed to provide propulsion force for a long time.

[0003] Generally, a rechargeable (or secondary) battery cell includes an electrode assembly including a positive electrode, a negative electrode, and a separator interposed between these electrodes. A solid or liquid electrolyte allows the movement of ions during charging and discharging of the battery cell. The electrode assembly is located within a casing, and electrode terminals located outside the casing establish an electrically conductive connection to the electrodes. The shape of the casing may be, for example, cylindrical or rectangular.

[0004] A battery module is composed of a plurality of battery cells connected in series, in parallel, or a combination of these two types. That is, a battery module is composed by connecting the electrode terminals of a plurality of battery cells to each other according to the amount of electric power required to realize a high-output secondary battery.

[0005] Battery modules can be configured in a block or modular structure. In a block structure, each unit battery cell arranged in a housing is connected to a common current collector structure and a common battery management system. In a modular structure, submodules are composed of multiple battery cells connected together, and battery modules are composed of multiple submodules connected together. In vehicle applications, a battery system includes multiple battery modules connected in series to provide the desired voltage.

[0006] A battery pack is a set of any number of (e.g., identical) battery modules or battery cells. Battery modules and the battery cells that comprise them can be configured in series, parallel, or a combination of both to provide the desired voltage, capacity, or power density. A battery pack includes individual battery modules and interconnects that provide electrical conductivity between them as its components.

[0007] The battery industry is focused on improving industrial efficiency, reducing energy consumption, and enhancing battery performance, with a particular emphasis on the manufacture of next-generation advanced batteries. The future of batteries with high safety and high energy lies in all-solid-state batteries (SSBs), which include thick solid electrodes and thin solid electrolytes. Mass production of all-solid-state batteries requires a desired industrial design that differs from existing technologies. Dry-type electrode (DBE) technology is a new concept with inherent compatibility for all-solid-state batteries (SSBs) and is attracting considerable attention from academia to industry.

[0008] To obtain granules or pellets optimized for subsequent manufacturing stages, the mixing process must be modified. This means that obtaining optimal granules or pellets can affect how the granule or pellet components are dispersed and mixed. [Overview of the project] [Problems that the invention aims to solve]

[0009] Embodiments of this disclosure aim to improve pelletizing apparatus, pelletizing systems, and methods for pelletizing dry cell electrode materials to provide greater flexibility throughout the manufacturing process. [Means for solving the problem]

[0010] According to one aspect of the present disclosure, a pelletizing apparatus for dry cell electrodes includes two rolls arranged parallel to each other and rotating in opposite directions, wherein at least one roll includes a plurality of cavities configured to form pellets, and the cavities have a structure based on a desired shape and size of the pellets.

[0011] According to other aspects of the present disclosure, a pelletizing system for dry battery electrodes includes a compression system configured to compress at least one of an extruded material and a mixture, and a pelletizing apparatus. The compression system is connected to the pelletizing apparatus and supplies the compressed extruded material and at least one of the compressed mixture to the pelletizing apparatus.

[0012] Another aspect of the present disclosure is a method for manufacturing a dry battery electrode, comprising the steps of compressing one of an extruded material and a mixture, and supplying at least one of the extruded material and the mixture to a pelletizing apparatus to form the pellet.

[0013] Additional aspects of this disclosure can be understood from the following explanation. [Effects of the Invention]

[0014] The pelletizing apparatus for dry battery electrodes according to the embodiments of this disclosure can form pellets having a desired shape and size due to the improved cavity structure of the rolls. [Brief explanation of the drawing]

[0015] Features and aspects of this disclosure may become apparent to those of the ordinary art by further detailing some exemplary embodiments with reference to the attached drawings. [Figure 1] Figure 1 is a schematic diagram showing a pelletizing apparatus according to an embodiment of the present disclosure. [Figure 2] Figure 2 is a schematic cross-sectional view showing the rolls of a pelletizing apparatus according to another embodiment of the present disclosure. [Figure 3] Figure 3 is a front view and a side view showing two examples of marking patterns on the rolls of the pelletizing apparatus of this disclosure. [Figure 4] Figure 4 shows the detailed configuration of the pelletizing apparatus shown in Figure 1 during the dry battery electrode manufacturing process. [Figure 5] Figure 5 shows a centrifugal separation system, which is part of the pelletizing system of this disclosure. [Figure 6] Figure 6 is a schematic diagram illustrating a dry battery electrode manufacturing method according to an embodiment of the present disclosure. [Modes for carrying out the invention]

[0016] The embodiments described below will be explained in detail with reference to the examples illustrated in the accompanying drawings. The aspects and features of the embodiments and their implementations will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same components, and redundant descriptions may be omitted. However, the disclosure can be implemented in a variety of different forms, and the disclosure should not be construed as being limited to the embodiments illustrated herein. Rather, such embodiments are provided as examples so that the disclosure is thorough and complete and can fully convey the aspects and features of the disclosure to those skilled in the art.

[0017] Accordingly, processes, elements, and techniques that are not considered necessary for a person skilled in the art to fully understand the aspects and features of this disclosure are either not described or described briefly. In the drawings, the relative sizes of elements, layers, and areas may be exaggerated for clarity.

[0018] As used herein, the term "and / or" includes all combinations of one or more of the associated items listed. Also, the term "can be" used when describing embodiments of the inventive concept means "one or more embodiments of the inventive concept". The singular forms used in this disclosure are intended to include the plural forms as well unless explicitly stated otherwise in context.

[0019] Terms such as "first", "second", and "third" are used to describe various elements, components, regions, layers, and / or sections, but these should not be limited by such terms. Such terms are used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. For example, the first element, component, region, layer, or section discussed below can be named the second element, component, region, layer, or section without departing from the spirit and scope of the inventive concept. As used herein, the term "and / or" includes all combinations of one or more of the associated items listed. Expressions such as "at least one" modify the entire list of elements when preceding the list of elements and do not modify the individual elements of the list.

[0020] The terms "substantially", "about", and similar terms used in this specification are used as approximations of degree and are intended to account for the inherent deviations of measured or calculated values recognized by a person of ordinary skill. Also, when the term "substantially" is used in combination with a feature that can be expressed using a numerical value, the term "substantially" indicates a range of ±5% of the value centered around the value.

[0021] The term "comprising" or "includes" identifies characteristics, regions, fixed numbers, steps, processes, elements, components, and combinations thereof, but does not exclude other characteristics, regions, fixed numbers, steps, processes, elements, components, and combinations thereof.

[0022] When a component or layer is expressed as "on", "connected to", or "coupled to" another component or layer, this may be directly connected to the other component or layer, or there may be one or more intervening other components or layers between the components.

[0023] The electronic or electrical devices and / or other related devices or components according to the described embodiments of the present invention can be realized using any suitable hardware, firmware (e.g., application - specific integrated circuits), software, or combinations thereof. Also, the various components of these devices may be provided on a flexible printed circuit film, a tape carrier package (TCP), on a printed circuit board or formed on a single substrate. The electrical connections or interconnections described herein can be realized by wires or conductive components (e.g., PCB or other types of circuit carriers). The conductive components can include metallization (e.g., surface metallization) and / or pins, and / or conductive polymers or ceramics. Additional electrical energy can be transmitted through wireless connections (e.g., radiation and / or light use).

[0024] Also, the various components of these devices may be processes or threads that perform one or more processes on one or more computing devices, execute computer program instructions, and interact with other system components to perform the various functions described above. The computer program instructions are stored in a memory that can be realized on a computing device using a standard memory device such as a random access memory (RAM). Also, the computer program instructions may be stored on other non - transitory computer - readable media such as, for example, a CD - ROM, a flash drive, etc.

[0025] Furthermore, a person skilled in the art should understand that the functions of various computing devices can be combined or integrated into a single computing device, and that the functions of a particular computing device can be distributed across one or more different computing devices without departing from the scope of the exemplary embodiments of this disclosure.

[0026] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as those generally understood by an ordinary person skilled in the art to which the present invention pertains. Furthermore, it should be understood that terms, such as commonly used predefined terms, should be interpreted to have a meaning consistent with their meaning in the context of the relevant art and / or this specification, and should not be interpreted in an ideal or overly formal sense.

[0027] According to one aspect of this disclosure, a pelletizing apparatus for the manufacturing process of dry cell electrodes includes two rolls arranged parallel to each other. The two rolls rotate in opposite directions to each other, and at least one of the rolls includes a plurality of cavities in which pellets are formed. The structure of the cavities is determined by the desired shape and size of the pellets. That is, the cavities have a structure based on the desired shape and size of the pellets.

[0028] In other words, the rolls are pressed facing each other, while the pellets are formed by compressing an extruded material or mixture that can be supplied to the pelletizing machine. The pellets are formed, for example, in cavities with engraved patterns. The rolls are closest to each other in the pressing area where the extruded material or mixture is pressed.

[0029] One or both rolls may be made of metal, polymer, or polymer-coated metal, or may include these. The material of the rolls may be changed depending on whether it is a positive or negative electrode application. The rolls may be coated to reduce or prevent pellet or granule adhesion and corrosion of the roll material.

[0030] According to exemplary embodiments of the present disclosure, at least one of the rolls includes a temperature control device configured to control the temperature of the roll through an internal flow of water, steam, or oil. The temperature control device can be used to cool the roll. As an internal cooling system, the temperature control device can be positioned inside the roll with cooling coils to cool the surface, for example, the cavity of the roll, thereby effectively cooling the pellets formed in the cavity. This cools the pellets, and as the pellets cool, they become less viscous and can be easily discharged from the cavity. Furthermore, cooling the pellets also helps to increase the stability of the pellet shape. That is, the temperature of the roll can be controlled so that granules and pellets can be easily discharged. For example, lower temperatures can improve granule separation at the roll.

[0031] According to other exemplary embodiments of the present disclosure, at least one roll includes at least one channel connected to at least one cavity and connected to a compressed air system to facilitate pellet discharge. The channel may be formed of a pipe or tube. With the help of the compressed air system, pressure is formed between the pellet and the cavity surface, and when the pressure becomes sufficiently high, the pellet is discharged from the cavity and controlled. The channel may connect to the bottom of the stamped cavity, i.e., the deepest part of the cavity. Through one embodiment, all cavities may be connected to the channel. The channel may include a plurality of subchannels, each subchannel may be connected to one cavity or a few cavities.

[0032] According to other embodiments of the present disclosure, a brush or blade can be positioned near the pellet discharge area to facilitate the removal of pellets. The pellet discharge area may be close to the aforementioned press area. The pellets may be discharged outside the press area. To facilitate the pelletizing process, the direction of pellet discharge can be aligned with the direction of gravity so that the discharged pellets fall downwards. If a brush is positioned below the roll, the discharge of pellets is forced into a direct path downward toward the direction of gravity, which is not obstructed by obstacles.

[0033] According to other exemplary aspects of this disclosure, a pelletizing system for a dry cell electrode manufacturing process includes a compression system and a pelletizing apparatus for compressing an extruded material or mixture. The compression system is connected to the pelletizing apparatus and supplies the compressed extruded material or mixture to the pelletizing apparatus. The aforementioned pelletizing apparatus is also applicable to the pelletizing system.

[0034] After a mixture of active material (which may be for the positive or negative electrode), conductive additives, and a polymer binder is mixed in a continuous or substantially continuous mixing process, the mixture or extruded material is compressed to improve feed to a pelletizing device. Mixing can be performed by a screw extruder. Pellet production can then be carried out through drop rollers with the desired roll shape and configuration.

[0035] According to one embodiment, the pelletizing system further includes a sieving system connected to the pelletizing apparatus. This allows for trimming of the compressed extruded material or compressed mixture to separate pellets of a selected size from pellets of a different size. Trimming occurs in the roll section where the cavities forming the pellets are not arranged. Thus, such trimming can be filtered out early in the process.

[0036] According to other embodiments of the present disclosure, the reuse transport system is connected to a sieving system and a compression system. Since trimmings and pellets that do not possess the desired properties and size can be reused in the compression system, virtually no material is wasted. Since the pelletizing apparatus may have a temperature control system, the reuse transport system can also be used for indirect temperature control of the compression system, and cooled pellets and trimmed material can be reintroduced into the compression system to lower the temperature of the mixture or extruder in the compression system. The temperature can be controlled by controlling the amount of reused material.

[0037] According to other exemplary embodiments of the present disclosure, a fibrous degree detection system is located upstream of the compression system and / or downstream of the pelletizing apparatus. Various different detection systems may be placed at all stages to further evaluate the optical and fluid properties of the pellets or granules. All such operations can be performed in a temperature-controlled manner by an air cooling system.

[0038] According to other exemplary embodiments of the present disclosure, at least one optical camera system is positioned downstream of the pelletizing apparatus and / or downstream of the sieving apparatus. For example, the optical camera system may be coupled to an evaluation device capable of interpreting image files recorded by the optical camera system. The optical camera system can, for example, distinguish between different granule or pellet colors.

[0039] According to other exemplary embodiments of the present disclosure, an inclined surface may be located downstream of the sieving apparatus, which can serve as a pellet storage area. The pellet storage area may be useful before supplying pellets to the film formation process for the manufacture of dry cell electrodes. This may help maintain a continuous process. Film formation can occur while pellets are accumulating in the storage area. Once a sufficient amount of pellets has accumulated in the storage area, the next film formation can begin almost immediately.

[0040] According to other exemplary embodiments of the present disclosure, a control camera system is positioned in a region of an inclined surface. The control camera system can be mounted to measure the pellet flow angle and / or cohesive force in the region of the inclined surface. The control camera system can be used to control pellet transport and to verify whether the pellets are cohesive or sticking to the system surface. If the pellets are excessively sticky, the subsequent film formation for the dry cell electrodes may not be performed uniformly.

[0041] According to other exemplary embodiments of the present disclosure, the pelletizing system further includes an air cooling system fitted to lower or maintain the temperature of the pellets. This allows the temperature of the pelletizing apparatus to be maintained between about 0°C and about 50°C. A temperature range of about 0°C to about 50°C can ensure that the pellet structure is stable and that the pellets do not stick together. Such a temperature range can facilitate the entire process, including the discharge of the pellets formed in the pelletizing apparatus. All such operations can be carried out in a temperature-controlled manner by the air cooling system.

[0042] A method for manufacturing a dry cell electrode according to another aspect of this disclosure includes the steps of compressing an extruded material or mixture, and feeding the compressed extruded material or mixture into a pelletizing apparatus to form pellets. The pelletizing apparatus is the pelletizing apparatus according to this disclosure. The method described above is also applicable to the pelletizing apparatus described above.

[0043] According to one embodiment of the present disclosure, the pellets are discharged from the pelletizing apparatus, separated from the trimmings, and sent to a supply system for the film formation stage. That is, only or most of the pellets of the desired size are supplied to the supply system, while pellets of different sizes from the trimmings are not used in the film formation stage, so that the film formation stage can be carried out uniformly using pellets of the desired substantially identical size.

[0044] According to other exemplary embodiments of this disclosure, the method is carried out by the pelletizing system described above. The pelletizing system described above can also be applied to the method.

[0045] Figure 1 is a schematic diagram showing a pelletizing apparatus 100 according to an exemplary embodiment of the present disclosure. The pelletizing apparatus 100 includes two cooperating rolls 101, 102 arranged parallel to each other. These rolls 101, 102 rotate in opposite directions. Both rolls 101, 102 include a plurality of cavities 103 in which pellets can be formed. The structure of the cavities 103 can be determined by the desired shape and size of the pellets. To form pellets from the extruded material, both rolls 101, 102 press the extruded material in the areas closest to each other. In this embodiment, both rolls 101, 102 are made entirely of metal or contain metal and may be coated to reduce or prevent the adhesion of pellets or granules and corrosion of the roll material.

[0046] Each roll 101, 102 includes a temperature control device 104 configured to control the temperature of the rolls 101, 102 through an internal flow such as water, steam, or oil. The temperature control device 104 is configured to cool the rolls 101, 102. This cools the pellets, and the colder the pellets, the less sticky they become, which can facilitate the discharge of the pellets from the cavity 103. Furthermore, this can improve the stability of the pellet shape. In other words, the discharge of granules or pellets can be facilitated through temperature control of the rolls 101, 102. The rolls 101, 102 also include a compressed air system 105, which is described in more detail through Figure 2.

[0047] Figure 2 is a schematic cross-sectional view of the rolls of the pelletizing apparatus 100. In the embodiment of Figure 2, the rolls 101, 102 include a channel 106 containing a plurality of partial channels 107 that connect from inside the rolls 101, 102 to the bottom of the cavity 103. The channel 106 and partial channels 107 are connected to a compressed air system 105 to facilitate the discharge of pellets. The channel 106 can be formed, for example, from pipes. With the help of the compressed air system 105, pressure is created between the pellets and the surface of the cavity 103, and when the pressure becomes sufficiently high, the pellets are discharged and removed from the cavity 103. In addition, the temperature control device 104 shown in Figure 2 is configured so that a cooling fluid passes over the surface area 108 of the rolls 101, 102, thereby making the cooling of the cavity 103 more efficient.

[0048] Figure 3 shows front and side views of two examples of imprinting patterns for rolls 101 and 102 for cavity formation. The pattern on the left is arranged substantially spherically, and the pattern on the right is arranged substantially cubically.

[0049] Figure 4 shows an exemplary embodiment in which the pelletizing apparatus 100 of Figure 1 is applied in the dry battery electrode manufacturing process. The pelletizing apparatus 100 is part of a pelletizing system 200. The pelletizing system 200 includes, for example, a compression system 201 for compressing the extruded material and the mass of material. The compression system 201 is connected to the pelletizing apparatus 100 to supply the compressed extruded material 202 to the pelletizing apparatus 100. The extruded material 202 is transported to the pelletizing apparatus 100, for example, via a conveyor belt 203.

[0050] Furthermore, the pelletizing system 200 may further include an inclined surface 206 located downstream of the sieving system 204. The inclined surface 206 can serve as a pellet accumulation area, causing the pellets produced as the extruded material 202 passes between the two rolls 101, 102 to accumulate on the other conveyor belt 203.

[0051] The pelletizing system 200 further includes a sieving system 204 connected to the pelletizing apparatus 100 to separate pellets of a selected size from pellets of a different size than selected or desired during trimming 205 of the compressed extruded material 202. Trimming occurs in the portions of rolls 101, 102 where cavities 103 for forming the pellets shown in Figure 3 are not arranged. Thus, such trimming 205 can be filtered in the initial process.

[0052] Figure 5 shows a centrifugal sieving system 204 as part of the pelletizing system 200. For example, the sieving system 204 includes an inclined roll sieving machine 207. The roll sieving machine 207 includes an opening 207a that is substantially the same size as the desired pellet size. The inclination of the roll sieving machine 207 causes the pellets and trimmings 205 to pass along the length of the roll sieving machine 207, where pellets that are substantially the same size as or smaller than the desired size fall out of the roll sieving machine 207 through the opening 207a. On the other hand, trimmings 205 and pellets that are excessively large compared to the size of the opening 207a are discharged to the tip 208 of the roll sieving machine 207. Pellets of the desired size are transported, for example, to a film forming system 209. The trimmings 205 are transported, for example, to a recycling system 210.

[0053] Figure 6 shows a schematic diagram of a dry battery electrode manufacturing method according to an exemplary embodiment. An extruded material, such as the extruded material 202 shown in Figure 4, exits the continuous mixing stage 301 and is introduced into the pelletizing stage 302. After the pelletizing stage 302 is performed, the formed pellets are introduced into the film forming stage 303. The pelletizing stage 302 is divided into the stages of extruded material compression 304, pellet manufacturing 305, and pellet sieving 306.

[0054] Through other examples, a reuse step can be performed after pellet sieving 306. Since the trimmed pellets shown in Figure 4 and pellets that do not have the desired properties and dimensions can be reused in the extrusion compression 304, virtually no material is wasted.

[0055] Furthermore, a fiberization degree sensing system 307 is positioned upstream of the extrusion compression 304 and downstream of the pellet manufacturing process 305. Additionally, an optical camera system 308 is positioned downstream of the pellet manufacturing process 305 and upstream of the film formation process 303. The optical camera system 308 may be connected to, for example, an evaluation device capable of interpreting image files recorded by the optical camera system 308. The optical camera system 308 can also, for example, determine the color of various granules and pellets.

[0056] The embodiments described herein should be understood to be descriptive in nature and not as limiting. Descriptions of features or aspects within each embodiment should generally be considered applicable to other similar features or aspects of other embodiments. Although one or more embodiments have been described with reference to the drawings, those skilled in the art will understand that various modifications of form and detail are possible without departing from the idea and scope defined by the appended claims and their equivalents. [Explanation of Symbols]

[0057] 100 pelletizing equipment 101,102 rolls 103 Cavity 104 Temperature control device 105 Compressed Air System Channel 106 107 partial channels 108 Roll surface 200 pelletization system 201 Compression System 202 Extruded 203 Conveyor Belt 204 Sieving System 205 Trimming 206 Slope 207 Roll-type sieving machine 208 Tip 209 Film Forming System 210 Reuse Systems 301 Continuous mixing stage 302 Pelletization process 303 Film Forming Process 304 Extrusion Compression 305 Pellet Manufacturing 306 Pellet sieving 307 Fiberization Degree Sensing System 308 Optical Camera System

Claims

1. A pelletizing apparatus for dry cell battery electrodes, Two rolls positioned parallel to each other and rotating in opposite directions. Includes, At least one of the rolls includes a plurality of cavities configured to form pellets, A pelletizing apparatus in which the cavity has a structure based on the desired shape and size of the pellets.

2. The pelletizing apparatus according to claim 1, wherein the at least one roll includes a temperature control device configured to control the temperature of the roll through an internal flow of water, steam, or oil.

3. The pelletizing apparatus according to claim 1, wherein the at least one roll includes at least one channel connected to at least one cavity and connected to a compressed air system.

4. The pelletizing apparatus according to claim 1, wherein one of the brushes and blades is positioned near the pellet discharge area to facilitate pellet removal.

5. The pelletizing apparatus according to claim 1, wherein the cavity has an engraved pattern.

6. A pelletizing system for dry cell battery electrodes, A compression system configured to compress at least one of an extruded material and a mixture, and Pelleting apparatus according to any one of claims 1 to 5 Includes, A pelletizing system comprising a compression system connected to a pelletizing device and supplying at least one of the compressed extruded material and the compressed mixture to the pelletizing device.

7. The pelletizing system according to claim 6, further comprising a sieving system connected to the pelletizing apparatus and configured to trim the compressed extruded material or separate pellets of a desired size from pellets of a different size in the compressed mixture.

8. The pelletizing system according to claim 7, further comprising a recycling system connected to the compression system and the sieving system.

9. The pelletizing system according to claim 6, further comprising a fibrous degree sensing system located at least one of the upstream of the compression system and the downstream of the pelletizing device.

10. The pelletizing system according to claim 7, further comprising at least one optical camera system located downstream of the pelletizing apparatus and at least one downstream of the sieving system.

11. The pelletizing system according to claim 7, further comprising an inclined surface located downstream of the pelletizing apparatus and the sieving system to constitute a pellet storage area.

12. The system further includes a control camera system positioned in the region of the inclined surface, The pelletizing system according to claim 11, wherein the control camera system is configured to measure at least one of the pellet flow angle and cohesive force in the region of the inclined surface.

13. The pelletizing system according to claim 6, further comprising an air cooling system configured to control the temperature of the pellets leaving the pelletizing apparatus between approximately 0°C and approximately 50°C.

14. A method for manufacturing a dry cell battery electrode, Compress one of the extruded material and the mixture, A manufacturing method comprising the step of supplying at least one of the compressed extruded material and the compressed mixture to a pelletizing apparatus according to any one of claims 1 to 5 to form the pellets.

15. The manufacturing method according to claim 14, wherein the pellets are discharged from the pelletizing apparatus, separated from trimming, and supplied to a supply system for the film forming process.

16. The aforementioned manufacturing method is A compression system configured to compress at least one of the extruded material and the mixture, and Including the aforementioned pelletizing apparatus, The manufacturing method according to claim 14, carried out in a pelletizing system that supplies at least one of the extruded material and the compressed mixture, which are connected to the pelletizing device, to the pelletizing device.

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