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Vacuum drier suitable for drying positive electrode material of lithium ion battery and application method thereof

A vacuum dryer and lithium-ion battery technology, applied in the direction of drying solid materials without heating, drying solid materials, non-progressive dryers, etc., can solve the problems of long drying time and poor stirring uniformity, and achieve improved drying The effect of improving efficiency, shortening drying time, and improving the uniformity of stirring and dispersion

Active Publication Date: 2019-08-16
HUNAN SHANSHAN ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a vacuum dryer suitable for drying lithium-ion battery positive electrode materials and its application method, to at least solve the problems of poor stirring uniformity and long drying time of vacuum dryers in the prior art

Method used

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  • Vacuum drier suitable for drying positive electrode material of lithium ion battery and application method thereof
  • Vacuum drier suitable for drying positive electrode material of lithium ion battery and application method thereof
  • Vacuum drier suitable for drying positive electrode material of lithium ion battery and application method thereof

Examples

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Embodiment 1

[0055] see Figure 1 to Figure 8 , an embodiment of the vacuum dryer suitable for drying lithium-ion battery positive electrode materials of the present invention, the vacuum dryer includes a cylinder body 10, an upper cover 11 is provided above the cylinder body 10, and a vacuum pumping device is provided on the upper cover 11. Inlet 12, feed inlet 13 and manhole 14, the outside of the cylinder 10 is provided with a jacket, and the jacket is provided with a heating medium inlet 15 and a heating medium outlet 16 (the heating medium is steam or heat transfer oil). Cylinder 10 is provided with stirring device, and this stirring device comprises stirring drive mechanism 20, and the output end of stirring drive mechanism 20 is connected with a stirring shaft 30, and this stirring shaft 30 stretches in the cylinder body 10, and at the lower end of stirring shaft 30 A stirring paddle 40 is installed. The stirring paddle 40 includes a first stirring paddle 41 , a second stirring pad...

Embodiment 2

[0072] see Figure 9 to Figure 12 , an embodiment of the vacuum dryer suitable for drying lithium-ion battery cathode materials of the present invention. The main structure of this vacuum drier is the same as that of the vacuum drier of embodiment 1. Compared with Embodiment 1, the main difference of the vacuum dryer in this embodiment is that the vacuum dryer also includes a discharge cooling device, which includes a cooling furnace body 100 and a cooling and stirring device 102 . Wherein, the cooling furnace body 100 is provided with a cooling feed port 101 communicated with the blanking chamber 50, and the cooling feed port 101 communicates with the furnace cavity of the cooling furnace body 100; the cooling stirring device 102 is installed on the cooling furnace body 100, It is used to stir and turn the materials in the cooling furnace body 100; There are a cooling medium inlet 104 and a cooling medium outlet 105 respectively communicating with the inside of the cooling ...

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Abstract

The invention discloses a vacuum drier suitable for drying a positive pole material of a lithium ion battery and an application method of the vacuum drier. The vacuum drier comprises a cylinder body.A stirring device is arranged on the cylinder body and comprises a stirring driving mechanism. An output end of the stirring driving mechanism is connected with a stirring shaft. Stirring paddles arearranged at the lower end of the stirring shaft and comprise a first stirring paddle and a second stirring paddle which are arranged in the circumferential direction of the stirring shaft. A through hole is formed in the first stirring paddle, and a first opening groove is formed in the lower edge of the second stirring paddle. The vacuum drier is provided with the first stirring paddle and the second stirring paddle. The through hole and the first opening groove are formed in the first stirring paddle and the second stirring paddle correspondingly. The first opening groove is formed in the second stirring paddle, so that the material scattering effect during stirring can be effectively improved. The through hole is formed in the first stirring paddle, so that materials on the track of theopening groove can be overturned upwards, and the stirring and dispersing effect can be improved. When the vacuum drier is used for drying lithium ion battery positive electrode material particles, the stirring and dispersing uniformity can be effectively improved, and the drying efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of drying equipment, in particular to a vacuum dryer suitable for drying lithium-ion battery cathode materials and an application method thereof. Background technique [0002] At present, disc dryers, vacuum rake dryers, and double-cone vacuum dryers are drying equipment widely used in the pharmaceutical, chemical, pesticide, and food industries, and are also widely used in the field of lithium-ion power batteries. In order to ensure the quality of high-nickel ternary lithium-ion battery cathode materials, a vacuum dryer is required in the production process of its precursor raw materials and high-nickel cathode materials to ensure that the materials are not introduced and reacted by foreign matter in the dryer. [0003] The patent document with application number 201410610597.1 discloses a scraper stirring vacuum dryer, which includes a vertical cylinder, a stirring device, an air extraction device and a he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B11/14F26B5/04F26B21/00F26B25/00F26B25/04
CPCF26B5/041F26B11/14F26B21/001F26B25/007F26B25/04
Inventor 袁小波唐志强蒋文平周惠
Owner HUNAN SHANSHAN ENERGY TECH CO LTD
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