2results about How to "Small spot diameter" patented technology

The invention discloses a method for punching a Bessel laser electrode material for a high-performance battery, and belongs to the field of laser processing of electrode materials. The implementation method comprises the following steps: an ultrasonic spraying instrument is adopted to spray ion conductive and electron non-conductive slurry on the surface of an electrode material, and the slurry can conduct lithium ions when being applied to a battery due to high ion conductivity, so that the excellent performance of the battery is kept; due to low electron conductivity, the material can be coated on an electrode as a protective layer to absorb energy at a Bessel side lobe so as to inhibit side lobe damage of an electrode material, and the electrode material at the side lobe is reserved, so that the capacity of the electrode is not influenced. An adopted Bessel laser processing system comprises a femtosecond laser, a diaphragm, an ultrafast laser reflection group, a mechanical switch, a computer, a dichroscope, a Bessel cutting head, an electrode material, a three-dimensional precision displacement table, a beam splitter, white light and a CCD dynamic imaging unit. According to the invention, the sidelobe damage caused when the Bessel laser punches a hole in the high-absorption electrode material can be obviously inhibited, and the power density of the battery is improved.

The present application belongs to the technical field of mechanical cutting tool manufacturing, and particularly relates to a micro-textured tool based on laser micro-cladding in-situ forming, a preparation method and application thereof. Specifically, the present application successfully prepares a multi-layer coated tool with a micro-textured morphology. The tool has the advantages of micro-texture, laser cladding layer and multi-layer coating structure, and has high hardness, good self-lubricating performance, good toughness, strong coating adhesion and small internal stress of the coating, and will not produce defects such as deformation or micro-cracks of the tool substrate material. In the cutting process, the tool can effectively reduce the cutting force and cutting temperature, reduce tool wear and improve tool life, and can be widely applied to dry cutting and cutting of difficult-to-machine materials, and therefore has good practical application value.