A kind of production method and production equipment of lithium-ion battery organic electrolyte

An organic electrolyte and lithium-ion battery technology, which is applied in the manufacture of secondary batteries, electrochemical generators, electrolyte batteries, etc., can solve the problems of high cost and inefficient production methods, reduce the cost of production equipment and improve production efficiency , Improve the effect of joining speed

Active Publication Date: 2020-06-09
南宁翌思达新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the inefficiency and high cost defects of the existing electrolyte production methods, it is necessary to provide a production method and production equipment for lithium-ion organic electrolytes, which can achieve efficient production of electrolytes and greatly reduce the production of electrolytes. cost, with significant industrial value

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  • A kind of production method and production equipment of lithium-ion battery organic electrolyte
  • A kind of production method and production equipment of lithium-ion battery organic electrolyte
  • A kind of production method and production equipment of lithium-ion battery organic electrolyte

Examples

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example 1

[0054] like figure 1 As shown, the first embodiment provides a production equipment for an organic electrolyte of a lithium ion battery, including a solvent mixing tank 1 , a pump 2 , a pipelined dissolving system, a cooling system and a finished product tank 7 . Among them, the pipelined dissolving system consists of pipelines 4 , and the cooling system includes a cooling device 5 and a freezing liquid tank 6 .

[0055] The solvent mixing tank 1 communicates with the front end of the pipeline 4 through the pump 2 , and the end of the pipeline 4 communicates with the finished product tank 7 . The frozen liquid tank 6 is loaded with the frozen liquid, the pipeline 4 is completely immersed in the frozen liquid of the frozen liquid tank 6, and the cooling device 5 is used for cooling the frozen liquid in the cooling tank. In the present embodiment, ethylene glycol is selected as the freezing liquid, the material of the pipeline 4 is selected as stainless steel which has undergon...

example 2

[0067] like figure 2 As shown, the second embodiment provides a production equipment for an organic electrolyte of a lithium ion battery, including a solvent mixing tank 1 , a pump 2 , a pipelined dissolving system, a cooling system, a buffer tank 8 and a finished product tank 7 . Among them, the pipelined dissolving system consists of pipelines 4 , and the cooling system includes a cooling device 5 and a freezing liquid tank 6 .

[0068] The solvent mixing tank 1 communicates with the front end of the pipeline 4 through the pump 2 , and the end of the pipeline 4 communicates with the finished product tank 7 . One end of the buffer tank 8 is communicated with the end of the pipeline 4, and the other end of the buffer tank 8 is communicated with the front end of the pipeline 4 through the pump 2. The buffer tank 8, the pump 2 and the pipeline 4 form a closed circuit. The freezing liquid tank is loaded with the freezing liquid, the pipeline 4 is completely immersed in the free...

example 3

[0082] like image 3 As shown, the third embodiment provides a production equipment for an organic electrolyte of a lithium ion battery, including a solvent mixing tank 1 , a pump 2 , a pipelined dissolving system, a cooling system, a buffer tank 8 and a finished product tank 7 . The pipelined dissolving system consists of pipelines 4 , and the cooling system includes a cooling device 5 , a freezing liquid tank 6 and a freezing jacket 9 .

[0083] The solvent mixing tank 1 is further communicated with the front end of the pipeline 4 through the pump 2 , and the end of the pipeline 4 is communicated with the finished product tank 7 . One end of the buffer tank 8 is communicated with the end of the pipeline 4, and the other end of the buffer tank 8 is communicated with the front end of the pipeline 4 through the pump 2. The buffer tank 8, the pump 2 and the pipeline 4 form a closed circuit. The refrigerating liquid tank 6 and the refrigerating sleeve 9 are loaded with refrigera...

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Abstract

The invention discloses a production method and production equipment of an organic electrolyte for a lithium ion battery, wherein the production method comprises: step 1: preparing an organic solvent for the electrolyte in a solvent mixing tank; step 2: organically mixing the electrolyte in the solvent mixing tank The solvent is transported to the pipeline according to the set flow rate, and the pipeline is immersed in the freezing medium of the cooling system; wherein, the pipeline is provided with at least one bend, and the pipeline is provided with a lithium salt feeding port; Step 3: It is detected that the temperature of the organic solvent of the electrolyte drops to In the range of ‑5°C to 0°C, lithium salt is added through the lithium salt feed port, and the lithium salt is dissolved to obtain an organic electrolyte for lithium-ion batteries. Through the above-mentioned production method, the present invention greatly improves the dissolution rate of lithium salts, improves production efficiency, prevents lithium salts from agglomerating and depositing, improves the adaptability of the production process to lithium salts, reduces production costs, and improves the cooling effect .

Description

technical field [0001] The invention designs a chemical production method, in particular to a production method and production equipment of an organic electrolyte for a lithium ion battery. Background technique [0002] Electrolyte is one of the four key materials (positive electrode, negative electrode, diaphragm, electrolyte) of lithium-ion battery. It is known as the "blood" of lithium-ion battery. It plays the role of conducting electrons between the positive and negative electrodes in the battery. High voltage, high specific energy and other advantages are guaranteed. The electrolyte is generally composed of high-purity organic solvents, electrolyte lithium salts (LiPF 6 etc.), necessary additives and other raw materials, under certain conditions, prepared in a certain proportion. [0003] When the lithium salt dissolves in the organic solvent, it will generate a lot of heat, which will increase the temperature of the electrolyte. 6 The thermal stability is poor, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0566H01M10/058
CPCH01M10/0566H01M10/058Y02E60/10Y02P70/50
Inventor 赖延清洪波范海林
Owner 南宁翌思达新能源科技有限公司
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