SYSTEM AND METHOD FOR CONTROLLING POWDER HOpper TEMPERATURE

Abstract

The invention relates to a system and method for controlling the temperature in a powder hopper to regulate the temperature of a dry electrode precursor material. For example, a system may include at least one powder hopper, at least one heating element, and at least one calender roll.

Description

Background Art

[0001] In the field of forming products such as sheets, films and webs, processing such products, calendering, etc., there is often a need to accurately produce these products with minimal thickness variation. One way to maintain minimal thickness variation and achieve uniform thermal expansion of the rolls used in the formation of the product is to heat the rolls to a uniform temperature. In the case of heated rolls, the heat is usually emitted from the rolls and absorbed by the surroundings, including the powder hopper used to provide the ingredients for forming the product.

[0002] Furthermore, precise temperature control of the components is critical when forming parts of electrochemical cells, capacitors, or supercapacitors. The components that form the electrodes of such electrochemical cells, capacitors, or supercapacitors must be processed at the correct temperature and pressure to form an electrode layer that meets strict specifications for thickness and uniformity. The components that form the electrodes typically include a binder that is sensitive to high temperatures and must be maintained at a temperature below that of the rollers to prevent premature activation of the binder. Additionally, it is typically necessary to preheat the components that form the electrodes prior to introducing them into the rollers.

[0003] Improvements in powder hoppers are needed in terms of controlling the temperature of the powder hopper and the powder material maintained within the powder hopper. Summary of the invention

[0004] In one embodiment, a system includes: at least one powder hopper and at least one heating element; wherein the at least one heating element is configured to heat the powder hopper.

[0005] In one embodiment, a method for manufacturing an electrode film includes: providing a dry electrode precursor material, at least one powder hopper and at least one calendering roller, wherein the powder hopper includes at least one temperature control element, wherein the at least one temperature control element includes at least one heating element, at least one cooling element or a combination thereof; and adjusting the temperature of at least one powder hopper using at least one temperature control element; and supplying the dry electrode precursor material to the at least one powder hopper; and contacting at least one calendering roller with the dry electrode precursor material.

[0006] In one embodiment, a dry electrode is produced by the following steps: providing a dry electrode precursor material, at least one powder hopper, and at least one calendering roller, wherein the powder hopper includes at least one temperature control element; adjusting the temperature of at least one powder hopper using at least one temperature control element; supplying the dry electrode precursor material to at least one powder hopper; and contacting the calendering roller with the dry electrode precursor material.

[0007] In one embodiment, a method of manufacturing a powder hopper includes: providing at least two powder hopper portions; providing at least one heating element; connecting the at least one heating element and the at least two powder hopper portions; and connecting the at least two powder hopper portions. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Aspects, features, benefits and advantages of the embodiments described herein will become apparent in conjunction with the following description, appended claims and accompanying drawings, in which:

[0009] Figure 1 An illustrative system with a temperature controlled powder hopper is depicted in accordance with an embodiment.

[0010] Figure 2 An illustrative system with a temperature controlled powder hopper is depicted in accordance with an embodiment.

[0011] Figure 3 An illustrative system with a temperature controlled powder hopper is depicted in accordance with an embodiment.

[0012] Figure 4 A schematic diagram of a method of manufacturing an electrode according to an embodiment is depicted.

[0013] definition

[0014] As used herein, the term "about" when immediately preceding a numerical value means a range of plus or minus 10% of the value, for example, "about 50" means 45 to 55, "about 25,000" means 22,500 to 27,500, etc., unless otherwise indicated by the context of the present disclosure or inconsistent with such interpretation.

[0015] The present disclosure is not limited to the specific embodiments described in this application, which are intended to be illustrations of various aspects. It will be clear to those skilled in the art that many modifications and variations can be made without departing from its spirit and scope. In addition to the methods and devices listed herein, it will be clear from the description that there are also functionally equivalent methods and devices within the scope of the present disclosure. Such modifications and variations are intended to fall within the scope of the appended claims. The present disclosure is only limited by the terms of the appended claims and the full range of equivalents enjoyed by these claims. It should be understood that the present disclosure is not limited to specific methods, reagents, compounds, compositions or biological systems, which may of course change. It should also be understood that the terms used herein are only for the purpose of describing specific embodiments and are not intended to be restrictive.

[0016] As used in this document, the singular forms "a", "an", and "the" include plural referents unless the context clearly indicates otherwise. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Nothing in this disclosure should be construed as an admission that the embodiments described in this disclosure are not entitled to antedate such disclosure by virtue of prior invention. As used in this document, the term "including" means "including, but not limited to."

[0017] While various compositions, methods, and apparatus are described as "comprising" various components or steps (interpreted to mean "including but not limited to"), the compositions, methods, and apparatus may also "consist essentially of" or "consist of" the various components and steps, and such terms should be interpreted as limiting a substantially closed group of members.

[0018] With respect to substantially any plural and / or singular terms used herein, those skilled in the art may appropriately convert the plural to the singular and / or the singular to the plural, depending on the context and / or application. For clarity, various singular / plural arrangements may be explicitly listed herein.

[0019] Those skilled in the art will understand that, in general, the terms used herein, and especially in the appended claims (e.g., the bodies of the appended claims), are generally intended to be "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "including but not limited to," etc.). Those skilled in the art will further understand that if a specific number of an introduced claim statement is intended, such intent will be explicitly stated in the claim, and if no such statement is present, no such intent is present. For example, to aid understanding, the following appended claims may contain the use of the introductory phrases "at least one" and "one or more" to introduce claim statements. However, the use of such phrases should not be interpreted as implying that the introduction of claim statements by the indefinite article "a" or "an" limits any particular claim containing such introduced claim statements to embodiments containing only one such statement, even if the same claim includes the introductory phrases "one or more" or "at least one" and an indefinite article such as "a" or "an" (e.g., "a" and / or "an" should be interpreted as meaning "at least one" or "one or more"); the same applies to the use of definite articles to introduce claim statements. In addition, even if a specific number of introduced claim statements is explicitly stated, a person skilled in the art will recognize that such a statement should be interpreted to mean at least the stated number (e.g., the mere statement "two statements" without other modifiers means at least two statements or two or more statements). In addition, in those cases where a convention similar to "at least one of A, B, and C, etc." is used, such construction is generally intended in a sense that one skilled in the art would understand the convention to mean (e.g., "a system having at least one of A, B, and C" would include, but is not limited to, systems having only A, only B, only C, both A and B, both A and C, both B and C, and / or both A, B, and C, etc.). In those cases where a convention similar to "at least one of A, B, or C, etc." is used, such construction is generally intended in a sense that one skilled in the art would understand the convention to mean (e.g., "a system having at least one of A, B, or C" would include, but is not limited to, systems having only A, only B, only C, both A and B, both A and C, both B and C, and / or both A, B, and C, etc.). One skilled in the art would further understand that, in practice, any transitional word and / or phrase presenting two or more alternative terms, whether in the specification, claims, or drawings, would be understood to contemplate the possibility of including one, either, or both of the terms. For example, the phrase "A or B" should be understood to include the possibilities of "A" or "B" or "A and B."

[0020] In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.

[0021] It will be understood by those skilled in the art that for any and all purposes, such as for providing a written description, all ranges disclosed herein also encompass any and all possible sub-ranges and combinations of sub-ranges thereof. Any listed range can be easily understood to fully describe and enable the same range to be decomposed into at least equal halves, thirds, quarters, fifths, tenths, etc. As a non-limiting example, each range discussed herein can be easily decomposed into lower thirds, middle thirds, and upper thirds, etc. It will also be understood by those skilled in the art that all languages, such as "up to", "at least", etc., include the stated number and refer to the range that can be subsequently decomposed into the sub-ranges discussed above. Finally, as will be understood by those skilled in the art, the range includes each individual member. Therefore, for example, a group with 1-3 units refers to a group with 1, 2, or 3 units. Similarly, a group with 1-5 units refers to a group with 1, 2, 3, 4, or 5 units, etc. DETAILED DESCRIPTION

[0022] The present disclosure is not limited to the particular systems, devices, and methods described, as these may vary. The terminology used in the description is for the purpose of describing the particular versions or embodiments only and is not intended to limit the scope.

[0023] system

[0024] The system can be assembled to help the temperature control of the powder hopper. In some embodiments, the system includes at least one powder hopper and at least one heating element, and the at least one heating element is configured to heat the powder hopper. In some embodiments, the system further includes at least one heating element, and the at least one heating element is configured to cool the powder hopper. In some embodiments, the system further includes at least one insulating layer, and the insulating layer is configured to retain the heat in the powder hopper and prevent the heat from the surrounding environment from entering the roller. In some embodiments, the system further includes at least one calendering roller. In some embodiments, the system is a calendering line. In some embodiments, the powder hopper may further include at least one powder material, such as a dry electrode powder precursor or other powder material. The powder hopper may further include a mixture of a powder material or two or more powder materials (such as two, three, four, five, six or more different powder materials).

[0025] Compared with not using the described methods and materials, using the described methods and materials can result in adjusting the temperature of the dry electrode precursor powder to a desired temperature. The temperature of the dry electrode powder precursor can generally be adjusted to a desired temperature range. For example, the temperature of the dry electrode powder precursor can generally be adjusted to a desired temperature with a tolerance of about 5°C, about 4°C, about 3°C, about 2°C, about 1°C, and ideally about 0°C.

[0026] Figure 1 A system having at least one powder hopper 101 and at least one heating element 102 is illustrated, wherein the at least one heating element is configured to heat the at least one powder hopper 101. In some embodiments, the at least one powder hopper 101 includes an inner surface and an outer surface, and the inner surface is configured to receive a dry electrode precursor material. In some embodiments, the at least one heating element 102 is located on the outer surface of the at least one powder hopper 101. In some embodiments, the system further includes at least one calendering roller 105, and the calendering roller is configured to receive a dry electrode material from the at least one powder hopper 101.

[0027] The at least one heating element 102 can generally be any heating element known to those skilled in the art that is effective in heating the at least one powder hopper 101. For example, the at least one heating element 102 can include at least one fluid heating channel, at least one resistive heating element, at least one inductive heating element, or a combination thereof. In some embodiments, the at least one heating element 102 is configured to cover the entire outer surface of the at least one powder hopper 101. In some embodiments, the at least one heating element 102 is configured to cover a portion of the entire outer surface of the at least one powder hopper 101. A gas distribution device 107 can be provided at the powder hopper 101 for flushing the hopper 101 with dry gas to prevent condensation.

[0028] In some embodiments, at least one heating element 102 is configured to heat at least one powder hopper 101 to a known temperature and maintain the temperature of at least one powder hopper 101 at a known temperature, wherein the known temperature corresponds to the known temperature of the dry electrode precursor material. In some embodiments, at least one heating element 102 is configured to maintain at least one powder hopper 101 at a temperature in a range between 0°C and 350°C, such as about 30°C, about 35°C, about 40°C, about 45°C, about 50°C, about 55°C, about 60°C, about 65°C, about 70°C, about 75°C, about 80°C, about 85°C, about 90°C, about 95°C, about 100°C, about 105°C, about 110°C, about 115°C, about 120°C , about 125°C, about 130°C, about 135°C, about 140°C, about 145°C, about 150°C, about 160°C, about 170°C, about 180°C, about 190°C, about 200°C, about 210°C, about 220°C, about 230°C, about 240°C, about 250°C, about 260°C, about 270°C, about 280°C, about 290°C, about 300°C, about 325°C, about 350°C, or any value or range of values ​​between any two of these values.

[0029] Figure 2 A system having at least one powder hopper 101 and at least one heating element 102 is illustrated, the at least one heating element being configured to heat the at least one powder hopper 101. In some embodiments, the at least one powder hopper 101 includes an inner surface and an outer surface, and the inner surface is configured to receive a dry electrode precursor material. In some embodiments, the at least one heating element 102 is located on the outer surface of the at least one powder hopper 101. In some embodiments, the system further includes at least one cooling element 103, the at least one cooling element being configured to cool the at least one powder hopper 101. In some embodiments, the system further includes at least one calendering roller 105, and the calendering roller is configured to receive dry electrode material from the at least one powder hopper 101.

[0030] The at least one cooling element 103 can generally be any cooling element known to those skilled in the art that effectively cools the at least one powder hopper 101. For example, the at least one cooling element 103 can include at least one fluid cooling channel, at least one thermoelectric cooler, or a combination thereof. In some embodiments, the at least one cooling element 103 is configured to cover the entire outer surface of the at least one powder hopper 101. In some embodiments, the at least one heating element 102 is configured to cover a portion of the entire outer surface of the at least one powder hopper 101. A gas distribution device 107 can be provided at the powder hopper 101 for flushing the hopper 101 with dry gas to prevent condensation.

[0031] In some embodiments, at least one cooling element 103 is configured to cool at least one powder hopper 101 to a known temperature and maintain the temperature of at least one powder hopper 101 at a known temperature, wherein the known temperature corresponds to the known temperature of the dry electrode precursor material. In some embodiments, at least one cooling element 103 is configured to maintain at least one powder hopper 101 at about 20°C, about 25°C, about 30°C, about 35°C, about 40°C, about 45°C, about 50°C, about 55°C, about 60°C, about 65°C, about 70°C, about 75°C, about 80°C, about 85°C, about 90°C, about 95°C, about 100°C, about 105°C, about 110°C, about 115°C, about 120°C, about 125°C , about 130°C, about 135°C, about 140°C, about 145°C, about 150°C, about 160°C, about 170°C, about 180°C, about 190°C, about 200°C, about 210°C, about 220°C, about 230°C, about 240°C, about 250°C, about 260°C, about 270°C, about 280°C, about 290°C, about 300°C, about 325°C, about 350°C, or any value or range of values ​​between any two of these values.

[0032] Figure 3 A system having at least one powder hopper 101 and at least one heating element 102 is illustrated, the at least one heating element being configured to heat the at least one powder hopper 101. In some embodiments, the at least one powder hopper 101 includes an inner surface and an outer surface, and the inner surface is configured to receive a dry electrode precursor material. In some embodiments, the at least one heating element 102 is located on the outer surface of the at least one powder hopper 101. In some embodiments, the system further includes at least one cooling element 103, the at least one cooling element being configured to cool the at least one powder hopper 101. In some embodiments, the system further includes at least one calendering roller 105, and the calendering roller is configured to receive a dry electrode material from the at least one powder hopper 101. In some embodiments, the system further includes at least one insulating layer 106.

[0033] In some embodiments, at least one insulating layer 106 is located on an outer surface of at least one powder hopper 101. In some embodiments, at least one insulating layer 106 is configured to cover the entire outer surface of at least one powder hopper 101. In some embodiments, at least one insulating layer 106 is configured to cover a portion of the entire outer surface of at least one powder hopper 101. In some embodiments, at least one heating element 102 is located between at least one powder hopper 101 and at least one insulating layer 106. In some embodiments, at least one cooling element 103 is located between at least one powder hopper 101 and at least one insulating layer 106.

[0034] In some embodiments, the at least one insulating layer 106 is configured to retain heat within the at least one powder hopper 101. Retaining heat within the at least one powder hopper 101 enables more precise control of the temperature of the at least one powder hopper 101 and limits heat from within the at least one powder hopper 101 from entering the surrounding environment. In some embodiments, the at least one insulating layer 106 is configured to prevent heat from the surrounding environment of the at least one powder hopper 101 from entering the at least one powder hopper 101. A gas distribution device 107 may be provided at the powder hopper 101 for flushing the hopper 101 with dry gas to prevent condensation.

[0035] At least one insulating layer 106 may include any material known to those skilled in the art that is effective as a thermal insulator. For example, at least one insulating layer 106 may include carbon fiber, ceramic fiber, glass fiber, mineral wool, PTFE, PEEK, nylon, polypropylene, vacuum insulation panels, or a combination thereof. In some embodiments, the thickness of at least one insulating layer 106 is about 1 mm, about 2 mm, about 3 mm, about 4 mm, about 5 mm, about 6 mm, about 7 mm, about 8 mm, about 9 mm, about 10 mm, about 11 mm, about 12 mm, about 13 mm, about 14 mm, about 15 mm, about 16 mm, about 17 mm, about 18 mm, about 19 mm, about 20 mm, about 25 mm, about 30 mm, or any value or value range between these values.

[0036] In some embodiments, the system further includes at least one temperature sensor, and the at least one temperature sensor is configured to measure the temperature of at least one powder hopper. In some embodiments, at least one temperature sensor is located in at least one powder hopper. In some embodiments, at least one temperature sensor is located outside at least one powder hopper. In some embodiments, the system further includes at least one processing device. In some embodiments, at least one temperature sensor is configured to transmit the temperature measurement value to at least one processing device. Each of the at least one temperature sensor can be configured to transmit the temperature measurement value to the display device by wired or wireless connection (such as by network, WiFi or Bluetooth connection).

[0037] How to use

[0038] The method of manufacturing an electrode film may be performed using the above-described system for controlling the temperature of a powder hopper.

[0039] Figure 4A schematic diagram of manufacturing an electrode film is illustrated. The method includes 401: providing a dry electrode precursor material, at least one powder hopper and at least one calendering roller, wherein the powder hopper includes at least one temperature control element. The method further includes 402: adjusting the temperature of at least one powder hopper using at least one temperature control element, 403: supplying the dry electrode precursor material to at least one powder hopper; and 404: contacting at least one calendering roller with the dry electrode precursor material.

[0040] In some embodiments, at least one temperature control element includes at least one heating element, and 402: adjusting the temperature of at least one powder hopper includes heating the powder hopper. In some embodiments, at least one heating element can heat at least one powder hopper by any method known to those skilled in the art. For example, at least one heating element can heat at least one powder hopper by passing a fluid through a fluid heating channel, by using a resistive heating element, by heating an inductive heating element, or a combination thereof.

[0041] In some embodiments, at least one temperature control element includes at least one cooling element, and 402: adjusting the temperature of at least one powder hopper includes cooling the powder hopper. In some embodiments, at least one cooling element can heat at least one powder hopper by any method known to those skilled in the art. For example, at least one cooling element can cool at least one powder hopper by passing a cooling fluid through a fluid cooling channel, by using a thermoelectric cooler, or a combination thereof.

[0042] The temperature of the powder hopper can generally be adjusted 402 to any temperature known to those skilled in the art. In some embodiments, the temperature of the powder hopper is maintained at a level within a range between 0°C and 350°C, such as about 20°C, about 25°C, about 30°C, about 35°C, about 40°C, about 45°C, about 50°C, about 55°C, about 60°C, about 65°C, about 70°C, about 75°C, about 80°C, about 85°C, about 90°C, about 95°C, about 100°C, about 105°C, about 110°C, about 115°C, about 120°C, about 125°C, about 130°C, about 135°C, about 140°C, about 150°C, about 160°C, about 170°C, about 180°C, about 190°C, about 200°C, about 210°C, about 220°C, about 230°C, about 240°C, about 250°C In some embodiments, the temperature of the powder hopper is maintained at about 20°C to about 350°C, about 20°C to about 200°C, about 20°C to about 40°C, about 60°C to about 150°C, about 90°C to about 120°C, or any value or range of values ​​between any two of these values.

[0043] Manufacturing method

[0044] The method can be assembled to manufacture a powder hopper including at least one heating element. The method includes providing at least two powder hopper parts, providing at least one temperature control element, connecting at least one temperature control element and at least two powder hopper parts and connecting at least two powder hopper parts. The at least two powder hopper parts can be manufactured by any manufacturing process known to those skilled in the art. In some embodiments, the at least two powder hopper parts are manufactured using CNC processing, forging, investment casting, injection molding, pressure die casting, additive manufacturing or a combination thereof.

[0045] In some embodiments, at least one temperature control element comprises at least one heating element. In some embodiments, at least one heating element can be manufactured by any manufacturing process known to those skilled in the art. In some embodiments, at least one heating element is manufactured by mechanical alloying, combustion synthesis, impact synthesis, hot isostatic pressing, gas metal arc welding, arc welding, tungsten inert gas shielded welding, flux cored arc welding, sputtering deposition, extrusion, CNC machining, forging, investment casting, injection molding, pressure die casting, additive manufacturing or a combination thereof.

[0046] In some embodiments, at least one temperature control element comprises at least one cooling element. In some embodiments, at least one cooling element can be manufactured by any manufacturing process known to those skilled in the art. In some embodiments, at least one cooling element is manufactured by mechanical alloying, gas metal arc welding, arc welding, tungsten inert gas shielded welding, flux cored arc welding, directional crystallization, pressed powder metallurgy, extrusion, CNC machining, forging, investment casting, injection molding, pressure die casting, additive manufacturing, or a combination thereof.

[0047] The at least one temperature control element can be connected to the at least two powder roller parts by any method known to those skilled in the art. For example, the at least one temperature control element and the at least two powder hopper parts can be connected by gas metal arc welding, arc welding, tungsten inert gas welding, flux cored arc welding, soldering, blending, adhesive bonding, mechanical fastening or a combination thereof.

[0048] In some embodiments, the at least two powder hopper parts can be connected by any process known to those skilled in the art that is effective in combining metal parts. For example, the at least two powder hopper parts can be connected by gas metal arc welding, arc welding, tungsten inert gas welding, flux cored arc welding, brazing, mixing, adhesive bonding, mechanical fastening, or a combination thereof.

[0049] In some embodiments, the method further includes manufacturing at least one insulating layer. At least one insulating layer can be manufactured by any manufacturing process known to those skilled in the art. In some embodiments, at least one insulating layer is manufactured by transfer molding, injection molding, melt molding, compression molding, vacuum forming, pultrusion or a combination thereof. In some embodiments, at least one insulating layer is connected to at least two powder hopper parts. At least one insulating layer can be connected to at least two powder hopper parts by any method known to those skilled in the art. For example, at least one insulating layer can be connected to at least two powder hopper parts by adhesive bonding, mechanical fastening or a combination thereof.

[0050] Various of the above disclosed and other features and functions or their replacements may be combined into many other different systems, methods or applications. Those skilled in the art may subsequently make various currently unforeseen or unanticipated substitutions, modifications, changes or improvements thereto, each of which is also intended to be covered by the disclosed embodiments.

Claims

1. A system comprising at least one powder hopper (101) and at least one cooling and / or heating element (102, 103), wherein the at least one cooling and / or heating element (102, 103) is configured to cool and / or heat the powder hopper (101).

2. The system of claim 1, wherein each of the at least one heating element (102) comprises at least one fluid cooling and / or heating channel, at least one inductive heating element, at least one resistive heating element, or a combination thereof.

3. The system of claim 1 or 2, further comprising at least one cooling element (103), wherein the at least one cooling element (103) is configured to cool the powder hopper (101), wherein the at least one cooling element (103) comprises at least one fluid cooling channel, at least one thermoelectric cooler, or a combination thereof.

4. The system of any of the preceding claims, further comprising at least one insulating layer (106), wherein: Each of the at least one insulating layer (106) is located on a surface of the at least one powder hopper (106).

5. The system of claim 4, wherein each of the at least one insulation layer (106) comprises fiberglass, mineral wool, PTFE, PEEK, nylon, polypropylene, vacuum insulation panels, or combinations thereof.

6. The system of any of the preceding claims, further comprising at least one temperature sensor and at least one processing device, wherein: The at least one temperature sensor is located within the at least one powder hopper; and The at least one temperature sensor is configured to transmit temperature measurements to the at least one processing device.

7. The system of any of the preceding claims, further comprising at least one temperature sensor and at least one processing device, wherein: The at least one temperature sensor is located outside the at least one powder hopper (101); and The at least one temperature sensor is configured to transmit temperature measurements to the at least one processing device.

8. The system of any of the preceding claims, further comprising a gas distribution device (107) configured for flushing the powder hopper (101) with dry gas to prevent condensation.

9. A method for manufacturing an electrode film, the method comprising: Providing a dry electrode precursor material, at least one powder hopper (101), and at least one calendering roller (105), wherein the powder hopper (101) comprises at least one temperature control element, wherein the at least one temperature control element comprises at least one heating element (102), at least one cooling element (103), or a combination thereof; regulating the temperature of the at least one powder hopper (101) using the at least one temperature control element; supplying the dry electrode precursor material to the at least one powder hopper (101); and The at least one calendering roller (105) is brought into contact with the dry electrode precursor material.

10. The method of claim 9, wherein the at least one powder hopper is maintained at a temperature of about 0°C to about 350°C.

11. The method of claim 9, wherein the at least one powder hopper (101) is maintained at a temperature of about 20°C to about 300°C.

12. The method of claim 9, wherein the at least one powder hopper (101) is maintained at a temperature of about 40°C to about 200°C.

13. The method of claim 9, wherein the at least one powder hopper (101) is maintained at a temperature of about 60°C to about 150°C.

14. The method of claim 9, wherein the at least one powder hopper (101) is maintained at a temperature of about 90°C to about 120°C.

15. A dry electrode, wherein the dry electrode is manufactured by the following steps: Providing a dry electrode precursor material, at least one powder hopper (101) and at least one calendering roller (105), wherein the powder hopper (101) includes at least one temperature control element; regulating the temperature of the at least one powder hopper (101) using the at least one temperature control element; supplying the dry electrode precursor material to the at least one powder hopper (101); and The calendering roller (105) is brought into contact with the dry electrode precursor material.

16. A method for manufacturing a powder hopper (101), the method comprising: providing at least two powder hopper sections; Providing at least one cooling and / or heating element (102, 103); connecting the at least one cooling and / or heating element (102, 103) and the at least two powder hopper parts; and The at least two powder hopper portions are connected.

17. The method of claim 16, wherein the at least two powder hopper portions are manufactured by CNC machining, forging, investment casting, injection molding, pressure die casting, additive manufacturing, or a combination thereof.

18. The method of claim 16 or 17, wherein the at least one cooling and / or heating element (102, 103) is manufactured by mechanical alloying, combustion synthesis, impact synthesis, hot isostatic pressing, gas metal arc welding, arc welding, tungsten inert gas welding, flux cored arc welding, sputtering deposition, extrusion, CNC machining, forging, investment casting, injection molding, pressure die casting, additive manufacturing, directional crystallization, pressed powder metallurgy or a combination thereof.

19. The method of any one of claims 16 to 18, wherein the at least one cooling and / or heating element (102, 103) is connected to the at least two powder hopper parts by gas metal arc welding, arc welding, tungsten inert gas welding, flux cored arc welding, brazing, mixing, adhesive bonding, mechanical fastening or a combination thereof.

20. The method of any one of claims 16 to 19, wherein the at least two powder hopper portions are connected by gas metal arc welding, electric arc welding, tungsten inert gas welding, flux cored arc welding, brazing, hybridizing, adhesive bonding, mechanical fastening, or a combination thereof.

21. The method of any one of claims 16 to 20, further comprising: Providing at least one cooling element (103) and at least one heating element (102); as well as The at least one cooling element (103) and the at least one heating element (102) are connected to the at least two powder hopper parts.

22. The method of any one of claims 16 to 21, further comprising flushing the powder hopper (101) with a dry gas to prevent condensation.

Images