2results about How to "Improve alignment" patented technology

The application relates to the technical field of battery production, and particularly discloses a conveying device with single-cell positioning, which comprises a conveying line and a plurality of positioning assemblies; the conveying line is used for conveying single cells; the positioning assemblies are used for performing alignment operation on the single cells on the conveying line; the positioning assemblies comprise a placement plate and a pushing piece; the placement plate is used for placing the single cells and abutting against one side of the single cells; and the pushing piece is used for pushing the other side of the single cells on the placement plate. In the scheme, the positioning assemblies can abut against two sides of the single cells through the placement plate and the pushing piece during single-cell conveying, and the pushing piece performs alignment operation on the single cells through the pushing action, so that the alignment degree of the single cells is improved, the influence of material displacement caused by vibration during conveying is reduced, and the detection speed and the battery yield are improved.

The application discloses a preparation method of super-high thermal conductive short-cut mesophase pitch-based graphite fiber and belongs to the technical field of fiber materials. The mesophase pitch fiber is obtained through twice melt spinning treatment, then the mesophase pitch fiber is cut into fixed-length fibers and subjected to non-fusion treatment, tension is applied to the obtained non-fusion fiber during carbonization treatment, then the non-fusion fiber is cut, and finally, graphitization treatment is performed. The mesophase pitch is used as raw material, twice melt spinning is performed, the fiber with more highly ordered aromatic molecular arrangement can be obtained by not adding a filter screen during the second spinning, the aromatic macromolecule can be converted into more regular carbon layers by applying tension during the carbonization process, the orientation of graphite microcrystals is favorable, and thus the super-high thermal conductive short-cut mesophase pitch-based graphite fiber can be obtained, and the carbonization is followed by short cutting, which is helpful to maintaining the orientation structure of the graphite microcrystals. The thermal conductivity of the short-cut mesophase pitch-based graphite fiber can be up to 1358 W / (m*K).