Drying device and electrode plate manufacturing apparatus

Patent metadata

Field	Value
Publication number	US-12516882-B2
Application number	US-202318098246-A
Country	US
Kind code	B2
Filing date	Jan 18, 2023
Priority date	Jan 25, 2022
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

The present application discloses a drying device and an electrode plate manufacturing apparatus. The drying device for drying a material comprises: a first oven section; a second oven section; and a third oven section, the first oven section, the second oven section and the third oven section being arranged sequentially in a movement direction of the material, wherein the second oven section has a larger air outlet area than the first oven section, and the first oven section has a larger air outlet area than the third oven section, such that the air speed of the first oven section is greater than that of the second oven section, and the air speed of the third oven section is greater than that of the first oven section. The solution provided by the present application can increase the production efficiency of batteries.

First claim

What is claimed is:

1 . A drying device for drying a material, comprising:
a first oven section; a second oven section; and a third oven section, the first oven section, the second oven section and the third oven section being arranged sequentially in a movement direction of the material, wherein the second oven section has a larger air outlet area than the first oven section, and the first oven section has a larger air outlet area than the third oven section; wherein the first oven section has a plurality of first tuyeres, the second oven section has a plurality of second tuyeres, and the third oven section has a plurality of third tuyeres, and
both of the first tuyeres and the second tuyeres have a larger air outlet area than the third tuyeres;
the first tuyeres and the second tuyeres each comprise an air outlet face structure, and the air outlet face structure comprises a boosting part and an air outlet part which are superposed in an air outlet direction with a gap therebetween; and
the boosting part is formed with a plurality of first slits at intervals, and the air outlet part is formed with a plurality of second slits, the first slits being staggered with the second slits.

2 . The drying device according to claim 1 , wherein
the first oven section has an air speed of less than 15 m/s, the second oven section has an air speed of less than 10 m/s, and the third oven section has an air speed of 15-30 m/s.

3 . The drying device according to claim 1 , wherein
in the movement direction of the material, the number of the tuyeres, of each of the oven sections, is not less than 15 per 5 m, and the center-to-center distance between two adjacent tuyeres is not greater than 0.3 m.

4 . The drying device according to claim 3 , wherein
the air outlet area of the first oven section is not less than 255,000 mm 2 /5 m; the air outlet area of the second oven section is not less than 375,000 mm 2 /5 m; and the air outlet area of the third oven section is not less than 84,000 mm 2 /5 m.

5 . The drying device according to claim 4 , wherein
the volume of air of the first oven section accounts for 30-60% of the total volume of air of the drying device, the volume of air of the second oven section accounts for 15-35% of the total volume of air of the drying device, and the volume of air of the third oven section accounts for 20-40% of the total volume of air of the drying device.

6 . The drying device according to claim 1 , wherein
the boosting part comprises a first frame and a plurality of first connecting portions arranged in the first frame, each of the first connecting portions is connected to the first frame at two ends, and the first slits are formed between two adjacent ones of the first connecting portions.

7 . The drying device according to claim 6 , wherein the first connecting portions are hollow structures.

8 . The drying device according to claim 1 , wherein
the air outlet part comprises a second frame and a plurality of second connecting portions arranged in the second frame, each of the second connecting portions is connected to the second frame at two ends, and the second slits are formed between two adjacent ones of the second connecting portions.

9 . The drying device according to claim 8 , wherein
the second connecting portions are hollow structures.

10 . The drying device according to claim 1 , wherein an oven device comprises or is connected to an air supply unit, the air supply unit supplying air to the first oven section, the second oven section and the third oven section simultaneously.

11 . An electrode plate manufacturing apparatus, comprising:
a coating device for coating a slurry on a surface of the electrode plate; and a drying device for drying a material which comprises: a first oven section; a second oven section; and a third oven section, the first oven section, the second oven section and the third oven section being arranged sequentially in a movement direction of the material, wherein the second oven section has a larger air outlet area than the first oven section, and the first oven section has a larger air outlet area than the third oven section, in a movement direction of the electrode plate, the drying device being disposed downstream of the coating device for drying the slurry on the electrode plate; wherein the first oven section has a plurality of first tuyeres, the second oven section has a plurality of second tuyeres, and the third oven section has a plurality of third tuyeres, and
both of the first tuyeres and the second tuyeres have a larger air outlet area than the third tuyeres;
the first tuyeres and the second tuyeres each comprise an air outlet face structure, and the air outlet face structure comprises a boosting part and an air outlet part which are superposed in an air outlet direction with a gap therebetween; and
the boosting part is formed with a plurality of first slits at intervals, and the air outlet part is formed with a plurality of second slits, the first slits being staggered with the second slits.

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

• Li Yuting
• Che Huan
• Chen Wei
• Li Shisong
• Qing Yalong

Classifications

• F26B21/50 Primary

  Ducting arrangements from the source of air or other gases to the materials or objects being dried · CPC title

• F26B3/02

  by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air {(F26B3/283 and F26B3/343 take precedence)} · CPC title

• B05D3/0272

  with ovens · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• F26B3/04 Primary

  the gas or vapour circulating over or surrounding the materials or objects to be dried (F26B3/14 takes precedence) · CPC title