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Waste and old hard-case power lithium ion battery electrolyte displacement apparatus and displacement method thereof

A lithium-ion battery, electrolyte technology, used in battery recycling, battery pack components, circuits, etc.

Inactive Publication Date: 2014-05-28
BEIJING UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, few researchers have paid attention to the pretreatment of batteries

Method used

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  • Waste and old hard-case power lithium ion battery electrolyte displacement apparatus and displacement method thereof

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Embodiment 1

[0021] Such as figure 1 Shown: Including vacuum pipeline system and liquid inlet pipeline system; vacuum pipeline system includes vacuum pump, vacuum tank, pressure gauge, liquid storage tank, tee, solenoid valve and other components; liquid inlet pipeline system includes centrifugal pump, cleaning fluid Tanks, flow meters, solenoid valves and other components. In the vacuum pipeline system, the vacuum pump 1 is connected to the vacuum tank 3 via the first solenoid valve 2. The vacuum tank 3 is provided with a first pressure gauge 4. The vacuum tank is connected to the liquid storage tank 6 through the pressure reducing valve 5. The liquid storage tank 6 is equipped with In the liquid inlet pipeline system of the first pressure gauge 7, the liquid storage tank 6 communicates with the general liquid inlet pipeline through the valve 8. There is also a second solenoid valve 12 on the general pipeline, and the second solenoid valve 12 passes through the flow meter 11 and the centr...

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Abstract

The invention relates to a waste and old hard-case power lithium ion battery electrolyte displacement apparatus and a displacement method thereof, which belongs to the lithium ion battery recovery and cleaning production fields. According to the invention, an electrolyte flowed in the cell is extracted from an explosion-proof valve port through a vacuum system, cleaning fluid is introduced in the cell through a liquid inlet system, after standing, the inner liquid of the cell is extracted through the vacuum system, and most volatile electrolyte and the solvent can be brought out if the steps are repeated. Through the pre-processing, the harmful gas to human body and environment when the cell is disassembled can be reduced. The extracted electrolyte enables cycle utilization through steps such as distillation, and the addition amount of the cleaning fluid can be controlled through a flowmeter and a solenoid valve.

Description

technical field [0001] The invention relates to an electrolyte replacement device and a replacement method for a waste hard-shell power lithium-ion battery, belonging to the field of lithium-ion battery recycling and clean production. Background technique [0002] With the rapid development of the electric vehicle industry, the application of power batteries has a broader space. Lithium-ion batteries have attracted extensive attention because of their high energy density, small size, and light weight. The production cost of power batteries is high and the volume is relatively large. With the increase in usage, battery material recycling is already necessary. However, the electrolyte of lithium-ion batteries is volatile, and the HF and PF produced when the battery is recycled and disassembled 5 Such gases are harmful to the human body and the environment. For hard-shell power lithium-ion batteries, many researchers have explored and studied. For example, the Chinese paten...

Claims

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Application Information

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IPC IPC(8): H01M10/54
CPCH01M10/54H01M50/691Y02E60/10Y02W30/84
Inventor 赵煜娟孙玉成纪常伟原诚寅杨槐于洋周玉坤张涛曹南海
Owner BEIJING UNIV OF TECH
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