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Lithium battery pole piece coating machine drying system using heat pump heat recovery and barrel pump circulation

A drying system and heat recovery technology, applied in heat recovery systems, battery electrodes, electrode current collector coatings, etc., can solve the problems of expensive spray towers, unable to guarantee complete removal of exhaust pollutants, and large space occupation. , to achieve the effect of large latent heat of phase change, saving power consumption and saving plant space

Active Publication Date: 2020-11-27
江苏博纳致远装备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spray tower is expensive, takes up a lot of space, and cannot guarantee that it can completely remove pollutants in the exhaust gas

Method used

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  • Lithium battery pole piece coating machine drying system using heat pump heat recovery and barrel pump circulation
  • Lithium battery pole piece coating machine drying system using heat pump heat recovery and barrel pump circulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] refer to figure 1 , a lithium battery pole piece coating machine drying system using heat pump heat recovery and barrel pump circulation, including: the main structure includes a drying tunnel 1, a lower heating assembly 4, an upper heating assembly 5, a host 23, a heat pump system 29 and air heat exchanger 39.

[0059] A supporting roller 2 is arranged in the drying tunnel 1 , and the pole piece 3 moves on the supporting roller 2 .

[0060] The lower heating assembly 4 arranged below the drying tunnel 1 contains refrigerant passages and air passages for mutual heat exchange. The refrigerant passages of the lower heating assembly 4 communicate with the refrigerant passages of the host 23, and the air passages of the lower heating assembly 4 are used for Provide heated air to the drying tunnel 1, the lower heating assembly 4 includes the lower return air duct 6, the fresh air duct 7, the lower fan 9, the lower heating box 10 and the condenser 11, the lower return air du...

Embodiment 2

[0075] In the barrel pump cycle of Embodiment 1, if the temperature of the refrigerant in front of the refrigerant pump 25 is too high, causing the refrigerant pump 25 to fail to work normally, you can refer to the solution of Embodiment 2.

[0076] refer to figure 2 , compared with Embodiment 1, in the host machine 23, a first subcooler 45 and a second subcooler 46 are added before the refrigerant pump 25.

[0077] The host 23 is also provided with a first subcooler 45 and a second subcooler 46, the first subcooler 45 and the second subcooler 46 both include refrigerant channels and air channels, the host liquid pipe interface 27, the second The refrigerant channel of the subcooler 46, the refrigerant channel of the first subcooler 45, the refrigerant pump 25, the refrigerant barrel 24 and the air pipe interface 28 of the main engine are sequentially connected through the refrigerant connecting pipe to form the main engine part of the barrel pump cycle One end of the air ch...

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Abstract

The invention relates to a lithium battery pole piece coater drying system adopting heat pump heat recovery and barrel pump circulating. The lithium battery pole piece coater drying system comprises adrying channel, a long air channel, an air discharging assembly, a lower heating assembly, an upper heating assembly, a heat pump system, a host and an air heat exchanger, wherein the lower heating assembly and the upper heating assembly are used for heating the drying channel. The host is used for achieving heat exchange between an air channel of the lower heating assembly and an air channel ofthe upper heating assembly, and the heat pump system is used for conducting heat exchange with fresh air; the air heat exchanger comprises two air flow passages conducting heat exchange mutually; an inlet of the first air flow passage communicates with an air channel of the heat pump system, and an outlet of the first air flow passage communicates with the air channel of the lower heating assembly; and an inlet of the second air flow passage communicates with the air discharging assembly and receives the air discharged by the air discharging assembly, and an outlet of the second air flow passage serves as a discharging opening. Compared with the prior art, the high-temperature requirement of lithium battery pole piece drying is met through heat pump heat recovery and barrel pump circulating, the heating load of the lithium battery pole piece drying system is lowered as far as possible, and meanwhile potential safety hazards are reduced.

Description

technical field [0001] The invention relates to a drying system for a lithium battery pole piece coater, in particular to a drying system for a lithium battery pole piece coater using heat pump heat recovery and barrel pump circulation. Background technique [0002] The drying process of lithium-ion batteries is one of the key processes in the entire battery manufacturing process, which plays an absolute role in battery performance. The investment of a coating machine mainly depends on the drying technology, the drying efficiency directly determines the coating line speed, and the drying uniformity affects the coating quality. The purpose of the drying process is to remove from the coating those ineffective solvents (carriers) that are used to suspend, dissolve or disperse the active components (polymers, binders, etc.) inside the coating, so that the wet coating becomes Even dry coat. In the lithium battery production process, the drying process of the battery pole piece ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D3/04F25B30/02F25B40/02H01M4/04H01M4/139
CPCB05D3/0413F25B30/02F25B40/02H01M4/0404H01M4/139Y02B30/52Y02E60/10Y02P70/10
Inventor 张春路刘洪鑫曹祥邵亮亮
Owner 江苏博纳致远装备科技有限公司
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