Nonaqueous Electrolyte and Nonaqueous Secondary Battery
US-2018062207-A1 · Mar 1, 2018 · US
Method for the production of an electrode powder mixture for a battery cell
US2022199963A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022199963-A1 |
| Application number | US-202117560600-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 23, 2021 |
| Priority date | Dec 23, 2020 |
| Publication date | Jun 23, 2022 |
| Grant date | — |
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Abstract
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A method for the production of an electrode powder mixture for a battery cell includes filling an active material, a binder and a conductive additive into a filling section of a machine that has a driven screw which extends in the lengthwise direction and which serves for thoroughly blending and conveying a powder in the lengthwise direction. The screw blends the binder, the active material and the conductive additive in order to form a first powder, and the screw makes a second powder out of the first powder in that the binder is fibrillated. The screw produces the electrode powder mixture out of the second powder in that the fibrillated binder is comminuted, and the electrode powder mixture is removed from the machine at a removal opening, whereby the removal opening is at a distance from the filling section in the lengthwise direction.
First claim
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1 . A method for the production of an electrode powder mixture for a battery cell, comprising: filling an active material, a binder and a conductive additive into a filling section of a machine that has a first driven screw which extends in a lengthwise direction and which serves for thoroughly blending and conveying a powder in the lengthwise direction, using the first screw, blending the binder, the active material and the conductive additive in order to form a first powder, using the first screw, forming a second powder out of the first powder wherein the binder is fibrillated, using the first screw, producing the electrode powder mixture out of the second powder wherein the fibrillated binder is comminuted, and removing the electrode powder mixture from the machine at a removal opening, wherein the removal opening is at a distance from the filling section in the lengthwise direction. 2 . The method according to claim 1 , wherein PTFE is used as the binder. 3 . The method according to claim 1 , wherein the active material and the binder are premixed before being filled into the machine. 4 . The method according to claim 1 , wherein the electrode powder mixture is filled into a silo. 5 . The method according to claim 1 , wherein the machine has a second screw that extends in the lengthwise direction and meshes with the screw. 6 . The method according to claim 5 , wherein a twin-screw extruder is used as the machine. 7 . A method for the production of an electrode for a battery cell, comprising producing an electrode powder mixture by the method according to claim 1 , wherein the electrode powder mixture is applied onto an arrester.
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- What does patent US2022199963A1 cover?
- A method for the production of an electrode powder mixture for a battery cell includes filling an active material, a binder and a conductive additive into a filling section of a machine that has a driven screw which extends in the lengthwise direction and which serves for thoroughly blending and conveying a powder in the lengthwise direction. The screw blends the binder, the active material and…
- Who is the assignee on this patent?
- Volkswagen Ag
- What technology area does this patent fall under?
- Primary CPC classification H01M4/04. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 23 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).