# US 2017/0282134 A1 · Apparatus for making battery slurry > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0282134 A1 - Document ID: US20170282134A1 - Status: Published application - Kind: A1 - Application number: 15/625,253 - Filed: 2017-06-16 - Published: 2017-10-05 - Earliest claimed: 2014-12-16 - Assignees: Jiangsu Huadong Institute of Li-Ion Battery Co., Ltd.; Tsinghua University - Applicants: Jiangsu Huadong Institute of Li-Ion Battery Co., Ltd.; Tsinghua University - Inventors: Xiang-Ming He; Hong-Sheng Zhang; Jian-Jun Li; Li Wang; Yu-Ming Shang; Guan-Nan Qian - Web page: https://patentgrep.com/patent/US20170282134A1 ## CPC - B01F 23/59: {Mixing systems, i.e. flow charts or diagrams} - B01F 23/53: using driven stirrers - B01F 23/54: {wetting solids} - B01F 27/0721: {parallel with respect to the rotating axis} - B01F 27/1125: with vanes or blades extending parallel or oblique to the stirrer axis - B01F 27/84: with two or more stirrers rotating at different speeds or in opposite directions about the same axis - B01F 27/95: with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis - B01F 27/951: {with at least one stirrer mounted on the sun axis} - B01F 33/70: Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming - B01F 33/821: {with consecutive receptacles} - B01F 35/51: characterised by their material - B01F 23/56: {by introducing solids in liquids, e.g. dispersing or dissolving} - B01F 23/565: {by introducing liquids in solid material, e.g. to obtain slurries} - B01F 33/834: {Mixing in several steps, e.g. successive steps (B01F33/81, B01F33/82 and B01F33/85 take precedence)} - H01M 4/04: Processes of manufacture in general - Y02E 60/10: Energy storage using batteries - B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An apparatus for making a battery slurry is disclosed. The apparatus comprises a vacuum system providing a vacuum environment, a dry powder mixing device mixing a plurality of powdery materials uniformly to obtain a dry powder, a kneading device kneading the dry powder with the first part solvent to form a doughy mixture, and a high speed dispersing device dispersing the doughy mixture to the second part solvent to form the battery slurry. The vacuum system, the dry powder mixing device, the kneading device, and the high speed dispersing device are connected to each other. ## Claims ### Claim 1 An apparatus for making a battery slurry, the apparatus operated to mix a plurality of powdery materials and at least one liquid raw material to form the battery slurry, wherein the at least one liquid raw material comprises a first part solvent and a second part solvent, the apparatus comprising: a dry powder mixing device to mix the plurality of powdery materials uniformly to obtain a dry powder, the dry powder mixing device comprising a container to hold the plurality of powdery materials; a kneading device to knead the dry powder with the first part solvent to form a doughy mixture, the kneading device comprising a tank and a movable blender; a vacuum system comprising a vacuum to reduce the pressure inside the dry powder mixing device and the kneading device; and a high speed dispersing device to disperse the doughy mixture to the second part solvent to form the battery slurry, the high speed dispersing device comprising a high speed dispersing paddle. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the blender comprises at least two kneading blades disposed in the tank. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein a shortest distance between an inner wall of the tank and a surface of each kneading blade is in a range from about 3 mm to about 5 mm. ### Claim 4 (depends on 2) The apparatus of claim 2, wherein each kneading blade has a FIG. 8 shaped structure, the FIG. 8 shaped is a stereo-structure comprising two S-shaped structures connected end to end with each other. ### Claim 5 (depends on 2) The apparatus of claim 2, wherein the at least two kneading blades are parallel to and spaced from each other. ### Claim 6 (depends on 2) The apparatus of claim 2, wherein each kneading blade is configured to rotate around a first axis and configured to revolve around a second axis different from the first axis. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the second axis is a central axis of the tank. ### Claim 8 (depends on 6) The apparatus of claim 6, wherein the at least two kneading blades are configured to rotate at a first speed in a first direction, and the at least two kneading blades are configured to revolve at a second speed in a second direction. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein walls of the apparatus contacting the dry powder or the solvent is made of a non-metal material, or made of a metal material covered at least partially with the non-metal material. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein a hardness of the non-metal material is larger than a hardness of the metal material. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein the non-metal material can be selected from the group consisting of fluorine plastic, tungsten carbide, silicon fluoride, carbon material, and combinations thereof. ### Claim 12 (depends on 1) The apparatus of claim 1, further comprising a conveying device, the conveying device configured to transport the doughy mixture from the kneading device into the high speed dispersing device. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the conveying device is connected between the kneading device and the high speed dispersing device. ### Claim 14 An apparatus for making a battery slurry, the apparatus operated to mix a plurality of powdery materials and at least one liquid raw material to form the battery slurry, wherein the at least one liquid raw material comprises a first part solvent and a second part solvent, the apparatus comprising: a dry powder mixing device to mix the plurality of powdery materials uniformly to obtain a dry powder; and a kneading device, the kneading device comprising a tank, at least two kneading blades disposed in the tank, and a high speed dispersing paddle disposed in the tank, wherein the at least two kneading blades are configured to knead the dry powder with the first part solvent to form a doughy mixture, and the high speed dispersing paddle is configured to disperse the doughy mixture to the second part solvent to form the battery slurry. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the least two kneading blades and the high speed dispersing paddle are parallel to and spaced from each other. ### Claim 16 (depends on 14) The apparatus of claim 14, wherein each kneading blade is configured to rotate around a first axis and revolve around a second axis different from the first axis, and the high speed dispersing paddle is configured to rotate around a third axis and revolve around a fourth axis different from the third axis. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the second axis and the fourth axis are both a central axis of the tank. ### Claim 18 (depends on 14) The apparatus of claim 14, wherein a shortest distance between an inner wall of the tank and a surface of each kneading blade is in a range from about 3 mm to about 5 mm. ### Claim 19 (depends on 14) The apparatus of claim 14, wherein each kneading blade is a FIG. 8 shaped structure, the FIG. 8 shaped structure is a stereo-structure comprising two S-shaped structures connected end to end with each other. ### Claim 20 (depends on 14) The apparatus of claim 14, wherein walls of the apparatus contacting the dry powder or the solvent is made of a non-metal material, or made of a metal material covered at least in part by the non-metal material.