KR-20260065530-A - CONE FEEDING ELECTRODE POWDER DISTRIBUTION

Abstract

Generally speaking, one or more aspects of the present disclosure relate to methods, systems, and devices for a powder dispensing system comprising a pair of calendar rolls, a first conical hopper and a second conical hopper positioned above the pair of calendar rolls, each hopper comprising a first temperature-controlled fluidization section, a first flow control system fluidically connected to the first temperature-controlled fluidization section, and a second flow control system fluidly connected to the second temperature-controlled fluidization section, a vertical linear actuator configured to adjust the distance between the first conical hopper, the second conical hopper and the pair of calendar rolls, and a horizontal linear actuator positioned between the first conical hopper and the second conical hopper.

Inventors

• 락스만 네바세, 샤말리
• 그라인드스태프, 말레나
• 파와르, 니킬 헤만트
• 츠우리디스, 소티리오스 디메트리오
• 매튜스, 케빈 코넬리어스
• 코담, 마두수단

Assignees

• 테슬라, 인크.

Dates

Publication Date

20260508

Application Date

20251027

Priority Date

20241031

Claims (20)

1. A pair of calendar rolls; A first conical hopper positioned above the pair of calendar rolls, wherein the first conical hopper has a first temperature-controlled fluidization section; A second conical hopper positioned above the pair of calendar rolls, wherein the second conical hopper has a second temperature-controlled fluidization section; A first flow control system fluidly connected to the first temperature-controlled fluidization section, and a second flow control system fluidly connected to the second temperature-controlled fluidization section; A vertical linear actuator configured to adjust the distance between the first conical hopper, the second conical hopper, and the pair of calendar rolls; and A horizontal linear actuator located between the first conical hopper and the second conical hopper. A powder dispensing system including
2. A pair of calendar rolls; A first conical hopper positioned above the pair of calendar rolls, wherein the first conical hopper has a first temperature-controlled fluidization section; and A vertical linear actuator configured to adjust the distance between the first conical hopper and the pair of calendar rolls. A powder dispensing system including
3. In Article 2, A powder dispensing system further comprising a second conical hopper positioned above the pair of calendar rolls, wherein the second conical hopper has a second temperature-controlled fluidization section.
4. In Paragraph 3, A powder dispensing system further comprising a horizontal linear actuator located between the first conical hopper and the second conical hopper.
5. In Article 4, A powder dispensing system further comprising a first flow control system fluidically connected to the first temperature-controlled fluidization section, and a second flow control system fluidly connected to the second temperature-controlled fluidization section.
6. In Article 2, A powder dispensing system further comprising a powder depth sensor configured to measure the depth of the powder in the first conical hopper.
7. In Article 2, A powder dispensing system further comprising the above-mentioned first temperature-controlled fluidization section and a fluid-connected flow control system.
8. In Article 2, The above-mentioned first temperature-controlled fluidization section is a powder dispensing system including temperature-controlled flow control.
9. In Article 2, The above-mentioned first temperature-controlled fluidization section is a powder dispensing system comprising an air inlet, an air plenum, and a porous inner wall.
10. In a powder distribution method, the above method is: Step of loading powder into a conical hopper - said conical hopper includes a fluidization section -; A step of applying gas from the fluidization section to form fluidized powder; A step of dispensing the fluidized powder out of the conical hopper at a daily dispensing rate onto a calendar roll system having a nip located below the conical hopper; and Step of forming a stacked powder supply on the nip Includes, The above-mentioned stacked powder supply is consumed by the calendar roll system at a daily consumption rate, and The above dispensing speed and the above consumption speed are substantially the same method.
11. In Article 10, A method further comprising the step of calendering the powder to form a film.
12. In Article 10, A method in which the dispensing speed is at least 200 kg/hour.
13. In Article 10, The above consumption rate is at least 200 kg/hour.
14. In Article 10, A method further comprising the step of adjusting the distance between the conical hopper and the calendar roll system through a linear actuator.
15. In Article 10, A method comprising the step of applying gas from the fluidization section to form a fluidized powder, and the step of applying a constant flow of the gas.
16. In Article 10, The above powder is a method comprising a dry electrode material.
17. In Article 16, The above dry electrode material is a method comprising an anode material.
18. In Article 16, The above dry electrode material is a method comprising a cathode material.
19. In Article 10, A method further comprising the step of forming a dry electrode film.
20. In Article 10, The above method is a dry manufacturing process method.

Description

Cone Feeding Electrode Powder Distribution Integration by reference to any priority applications This application claims the benefit of priority to U.S. Patent Application No. 18/933,553, entitled “CONE FEEDING ELECTRODE POWDER DISTRIBUTION,” filed on October 31, 2024, which is incorporated herein by reference for all purposes in its entirety. Technology field The present disclosure generally relates to a powder dispensing device, and in particular to a powder dispensing device for dispensing dry electrode powder onto a calender roll. Electrode films can be produced by calendering dry electrode powder. The quality of the electrode film depends on the distribution of the dry electrode powder onto the calender roll system. The calendering process can consume the powder at a specific rate according to yield requirements. Therefore, there is a need for a powder dispensing device that can dispense dry electrode powders and produce high-quality energy storage electrode films. For the purpose of summarizing the invention and summarizing the advantages achieved over the prior art, specific purposes and advantages of the invention are described herein. Not all of these purposes or advantages may be achieved in any specific embodiment of the invention. Accordingly, for example, those skilled in the art will recognize that the invention may be embodied or performed in a manner that achieves or optimizes one or a series of advantages taught herein without necessarily achieving other purposes or advantages that may be taught or suggested herein. In some embodiments, a powder dispensing system is described. The powder dispensing system comprises a pair of calender rolls, a first conical hopper positioned above the pair of calender rolls, wherein the first conical hopper has a first temperature-controlled fluidization section, a second conical hopper positioned above the pair of calender rolls, wherein the second conical hopper has a second temperature-controlled fluidization section, a first flow control system fluidically connected to the first temperature-controlled fluidization section, and a second flow control system fluidly connected to the second temperature-controlled fluidization section, a vertical linear actuator configured to adjust the distance between the first conical hopper, the second conical hopper, and the pair of calender rolls, and a horizontal linear actuator positioned between the first conical hopper and the second conical hopper. In some embodiments, the powder dispensing system comprises a pair of calender rolls, a first conical hopper positioned above the pair of calender rolls, wherein the first conical hopper has a first temperature-controlled fluidization section, and a vertical linear actuator configured to adjust the distance between the first conical hopper and the pair of calender rolls. In some embodiments, the powder dispensing system further comprises a second conical hopper positioned above the pair of calender rolls, and the second conical hopper has a second temperature-controlled fluidization section. In some embodiments, the powder dispensing system further comprises a horizontal linear actuator positioned between the first conical hopper and the second conical hopper. In some embodiments, the powder dispensing system further comprises a first flow control system fluidically connected to the first temperature-controlled fluidization section, and a second flow control system fluidly connected to the second temperature-controlled fluidization section. In some embodiments, the powder dispensing system further comprises a powder depth sensor configured to measure the depth of the powder in the first conical hopper. In some embodiments, the powder dispensing system further comprises a flow control system fluidly connected to the first temperature-controlled fluidization section. In some embodiments, the first temperature-controlled fluidization section includes temperature-controlled flow control. In some embodiments, the first temperature-controlled fluidization section includes an air inlet, an air plenum, and a porous inner wall. In some embodiments, a powder dispensing method is described. The method comprises the step of loading powder into a conical hopper, wherein the conical hopper comprises a fluidizing section, and the step of applying gas from the fluidizing section to form a fluidized powder, the step of dispensing the fluidized powder out of the conical hopper at a dispensing rate onto a calender roll system having a nip located below the conical hopper, and the step of forming a stacked powder supply on the nip, wherein the stacked powder supply is consumed by the calender roll system at a consumption rate, and the dispensing rate and the consumption rate are substantially the same. In some embodiments, the method further comprises the step of calendering the powder to form a film. In some embodiments, the dispensing speed is at least 200 kg/hour. In some embodiments, th