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Device and method for extracting electrolyte liquid of spent lithium-ion batteries

A lithium-ion battery and electrolyte technology, applied in secondary batteries, battery recycling, circuits, etc., can solve problems such as environmental pollution, and achieve the effects of extending service life, safe and efficient extraction methods, and avoiding the production of chemically hazardous substances

Active Publication Date: 2018-07-10
安徽南都华铂新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic mainstream waste lithium battery treatment companies all use high-temperature chemical processes at 300-700°C to process electrolytes, which will produce a large amount of dioxins and cause serious pollution to the environment.

Method used

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  • Device and method for extracting electrolyte liquid of spent lithium-ion batteries
  • Device and method for extracting electrolyte liquid of spent lithium-ion batteries
  • Device and method for extracting electrolyte liquid of spent lithium-ion batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A device for extracting the electrolyte of waste lithium-ion batteries, including a closed high-pressure tank and a steam supply pipeline system, a liquid discharge pipeline system, a gas discharge pipeline system and a vacuum system respectively connected to the tank. The pipeline system is provided with a condenser, and the vacuum system is provided with an air flow vacuum pump. The inner wall of the tank is provided with a resin coating resistant to hydrofluoric acid and electrolyte. The steam supply pipeline system, liquid discharge pipeline system, gas discharge pipeline system and vacuum system are all equipped with automatic valves, and the valves are made of hydrofluoric acid resistant valve parts; the liquid discharge pipeline system and gas discharge pipeline system are made of composite Teflon-lined stainless steel piping.

[0029] The method for extracting the electrolyte of the waste lithium-ion battery by using the above-mentioned device is to load the wa...

Embodiment 2

[0031] A device for extracting the electrolyte of waste lithium-ion batteries, including a closed high-pressure tank and a steam supply pipeline system, a liquid discharge pipeline system, a gas discharge pipeline system and a vacuum system respectively connected to the tank. The pipeline system is provided with a condenser, and the vacuum system is provided with an air flow vacuum pump. The inner wall of the tank is provided with a resin coating resistant to hydrofluoric acid and electrolyte. The steam supply pipeline system, liquid discharge pipeline system, gas discharge pipeline system and vacuum system are all equipped with automatic valves, and the valves are made of hydrofluoric acid resistant valve parts; the liquid discharge pipeline system and gas discharge pipeline system are made of composite Teflon-lined stainless steel piping.

[0032] The method for extracting the electrolyte of the waste lithium-ion battery by using the above-mentioned device is to load the wa...

Embodiment 3

[0035] A device for extracting the electrolyte of waste lithium-ion batteries, including a closed high-pressure tank and a steam supply pipeline system, a liquid discharge pipeline system, a gas discharge pipeline system and a vacuum system respectively connected to the tank. The pipeline system is provided with a condenser, and the vacuum system is provided with an air flow vacuum pump. The inner wall of the tank is provided with a resin coating resistant to hydrofluoric acid and electrolyte. The steam supply pipeline system, liquid discharge pipeline system, gas discharge pipeline system and vacuum system are all equipped with automatic valves, and the valves are made of hydrofluoric acid resistant valve parts; the liquid discharge pipeline system and gas discharge pipeline system are made of composite Teflon-lined stainless steel piping.

[0036] The method for extracting the electrolyte of the waste lithium-ion battery by using the above-mentioned device is to load the wa...

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PUM

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Abstract

Relating to the technical field of lithium ion battery recovery, the invention discloses a device and method for extracting electrolyte liquid of spent lithium-ion batteries. The device comprises a sealed high pressure tank, and a steam supply pipeline system, a liquid discharge pipeline system, a gas discharge pipeline system and a vacuum-pumping system that are respectively connected to the tank. The gas discharge pipeline system is equipped with a condenser, and the vacuum-pumping system is equipped with an airflow vacuum pump. The device and method provided by the invention realize physical extraction of electrolyte liquid in spent lithium-ion batteries, and the extraction method is safe and efficient. A physical process below 250DEG C is employed to extract electrolyte liquid, and then centralized treatment is carried out to avoid the production of dioxin and other chemical hazardous substances and prevent severe environmental pollution caused by mass production of dioxin and other chemical hazardous substances.

Description

Technical field: [0001] The invention relates to the technical field of lithium ion battery recycling, in particular to a device and method for extracting electrolyte solution of waste lithium ion batteries. Background technique: [0002] Since the rapid development of new energy vehicles, as a large number of power lithium-ion batteries are scrapped, there is an urgent need for a clean and environmentally friendly way to deal with scrapped batteries. At present, domestic mainstream waste lithium battery treatment companies all use high-temperature chemical processes at 300-700°C to process electrolytes, which will produce a large amount of dioxins and cause serious pollution to the environment. [0003] The device of the invention adopts a physical process lower than 250°C to extract the electrolyte, and then conducts centralized treatment, thereby avoiding the generation of chemical harmful substances such as dioxin. Invention content: [0004] The technical problem to ...

Claims

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Application Information

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IPC IPC(8): H01M10/54H01M10/0525
CPCH01M10/0525H01M10/54Y02E60/10Y02W30/84
Inventor 朱建楠吴国庆朱保义
Owner 安徽南都华铂新材料科技有限公司