A method and system for harmless treatment of lithium-ion batteries

A lithium-ion battery, harmless treatment technology, applied in the field of lithium-ion batteries, can solve the problems that the electrolyte treatment problem has not been effectively solved, the electrolyte cannot be removed, and it is difficult to achieve scale, etc., so as to facilitate large-scale The effect of industrialization development, efficient and harmless treatment, and avoidance of impact

Active Publication Date: 2020-06-05
CHINA AVIATION LITHIUM BATTERY LUOYANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the problem of electrolyte treatment in the early stage has not been effectively solved.
However, this method is time-consuming and energy-intensive, and it is difficult to achieve large-scale
The Chinese invention patent with application number 201310290286.7 uses centrifugation to remove and collect the electrolyte, but this method can only remove most of the electrolyte, and the electrolyte adsorbed on the positive and negative materials and the separator is still not removed

Method used

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  • A method and system for harmless treatment of lithium-ion batteries

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Comparison scheme
Effect test

Embodiment 1

[0040] The harmless treatment method of lithium ion battery of the present invention comprises the following steps:

[0041] 1) Take 1.5 tons of decommissioned lithium iron phosphate batteries and put them into a jaw crusher for crushing. After crushing, a lithium-ion battery crushed material with a particle size of about 0.5cm is obtained; after the crushing is completed, open the discharge port of the crusher, Load the crushed material into three vehicles in turn with a volume of 1m 3 in the material cart;

[0042] 2) Run the three material trucks loaded with crushed lithium-ion battery materials in step 1) into the steam reaction chamber, seal the reaction chamber, evacuate the reaction chamber to make the vacuum degree reach -0.09MPa, and then pour into the reaction chamber Introduce steam at a temperature of 120°C to make the pressure in the reaction chamber reach 0.2MPa, carry out steam reaction for 20min, then evacuate to -0.08MPa, keep for 5min, continue to pass in st...

Embodiment 2

[0056] The harmless treatment method of lithium ion battery of the present invention comprises the following steps:

[0057] 1) Take 4.5 tons of decommissioned ternary material lithium batteries and put them into an impact crusher for crushing. After crushing, a lithium-ion battery crushed material with a particle size of about 4cm is obtained; after the crushing is completed, open the discharge port of the crusher, Load the crushed material into three vehicles with a volume of 3m 3 in the material cart;

[0058] 2) Run the three material trucks loaded with crushed lithium-ion battery materials in step 1) into the steam reaction chamber, seal the reaction chamber, evacuate the reaction chamber to make the vacuum degree reach -0.09MPa, and then pour the steam into the reaction chamber Introduce steam at a temperature of 150°C to make the pressure in the reaction chamber reach 0.48MPa, carry out steam reaction for 20min, then evacuate to -0.08MPa, keep for 5min, continue to pas...

Embodiment 3

[0063] The harmless treatment method of lithium ion battery of the present invention comprises the following steps:

[0064] 1) Take 1.5 tons of decommissioned lithium iron phosphate batteries and put them into a jaw crusher for crushing. After crushing, a lithium-ion battery crushed material with a particle size of 1cm is obtained; after the crushing is completed, open the discharge port of the crusher and crush the The materials are sequentially loaded into three vehicles with a volume of 1m 3 in the material cart;

[0065]2) Run the three material trucks loaded with crushed lithium-ion battery materials in step 1) into the steam reaction chamber, seal the reaction chamber, evacuate the reaction chamber to make the vacuum degree reach -0.09MPa, and then pour into the reaction chamber Introduce steam at a temperature of 135°C to make the pressure in the reaction chamber reach 0.32MPa, carry out steam reaction for 20min, then evacuate to -0.08MPa, keep for 5min, continue to i...

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Abstract

The invention relates to a harmless treatment method and system for a lithium ion battery, and belongs to the technical field of the lithium ion battery. The harmless treatment method for the lithiumion battery provided by the invention comprises the following steps of performing crushing of the lithium ion battery to obtain a lithium ion battery crushed material; putting the obtained lithium ionbattery crushed material into a sealed reaction cavity to be subjected to vacuumizing treatment, and next, performing steam reaction treatment on the lithium ion battery crushed material and then performing vacuuming treatment after the reaction; and collecting gas generated by the steam reaction in the steam reaction treatment process. The harmless treatment system for the lithium ion battery comprises a safe crushing system used for crushing the lithium ion battery and a steam reaction system, wherein the steam reaction system comprises a sealed steam reaction cavity for allowing the lithium ion battery crushed material to be reacted; and a steam inlet and an exhaust gas outlet are formed in the steam reaction cavity. By virtue of the harmless treatment method and system for the lithiumion battery, complete harmless treatment process for the lithium ion battery can be realized, and relatively high electrolyte removal rate is achieved.

Description

technical field [0001] The invention relates to a lithium-ion battery harmless treatment method and system, belonging to the technical field of lithium-ion batteries. Background technique [0002] With the rapid development of the new energy industry, a large number of lithium-ion batteries are used in electric vehicles and energy storage power stations, some of which have been scrapped. As time goes by, the number of scrapped lithium-ion batteries will rise sharply. [0003] At present, the mainstream lithium-ion battery recycling process is divided into two processes: fire method and mechanical separation process according to the different processing objects. The fire method is generally used in ternary material lithium-ion batteries. The inorganic slag is obtained by direct combustion, and then high-value elements such as nickel, cobalt, and manganese are obtained through hydrometallurgy. Although the fire method is simple and straightforward, the dioxin problem caused b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54
CPCY02W30/84
Inventor 朱建楠李肖肖王楠齐彬伟李兴旺
Owner CHINA AVIATION LITHIUM BATTERY LUOYANG
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