Rapid preparation method of high-strength artificial graphite for new energy automobile

By introducing pressure control during the graphitization process, reducing the graphitization temperature and simplifying the process flow, the problems of large energy consumption, long production cycle, high cost and poor performance consistency in traditional artificial graphite preparation processes are solved, and the rapid preparation of high-strength and high-density artificial graphite blocks are achieved.

CN119707493AInactive Publication Date: 2025-03-28HENAN MECHANICAL & ELECTRICAL ENG COLLEGE
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Patent Information

Application Number
CN202510217450.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-26
Publication Date
2025-03-28
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Traditional artificial graphite preparation technology requires high temperature and long-term insulation, resulting in large energy consumption, long production cycle, high cost, and poor performance consistency, making it difficult to meet the demand for high-performance graphite materials in the new energy vehicle industry.

Method used

By introducing pressure control during the graphitization process, the graphitization temperature is reduced, the process flow is simplified, and the strength performance of graphite blocks is improved. Specific steps include mixing raw materials, heating and mixing, multiple granulation treatment, molding, carbonization treatment, processing, and pressurized heating graphitization treatment.

Benefits of technology

It significantly reduces the graphitization temperature, shortens the preparation cycle, reduces the cost, and increases the density and strength of graphite blocks, with density higher than 1.95g/cm3 and compressive strength exceeding 150MPa, meeting the demand for high-strength graphite materials in different application fields.

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Abstract

The invention discloses a rapid preparation method of high-strength artificial graphite for a new energy automobile. The method comprises the following steps: firstly, uniformly mixing aggregate, an adhesive and other raw materials according to a certain proportion; then carrying out crushing and homogenizing treatment on the mixed material particles; and molding and carbonizing the treated particles, and graphitizing the particles in synthesis equipment. The graphitization transformation temperature can be greatly reduced through a pressure and temperature coordination control technology in synthesis equipment, the needed transformation temperature is only about 50% of that of a traditional artificial graphitization method, the graphitization time is greatly shortened, the mechanical strength and the volume density of the prepared artificial graphite block are obviously improved, and the preparation method is suitable for industrial production. The high-strength graphite block material is high in density (the density is larger than 1.95 g / cm < 3 >) and high in strength (the compressive strength is larger than 150 MPa), the physical performance of the high-strength graphite block material is greatly improved, and the requirements of different application fields for the high-strength graphite block material can be met.
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