50results about How to "Improve high voltage resistance performance" patented technology

The invention discloses a non-aqueous electrolyte. The non-aqueous electrolyte comprises the following constituents based on mass: 10-20 parts of compound shown in structural formula (I), 5-12 parts of other lithium salts, 2-5 parts of 1,4-butanediol sulphate, 10-12 parts of adiponitrile, 15-25 parts of pimelicdinitrile, 10-15 parts of octanedinitrile, 8-20 parts of sebaconitrile, 20-40 parts of 4-fluorine-1,3-dioxolane-2-ketone, 5-10 parts of ethylene carbonate, 2-5 parts of propylene carbonate, 5-12 parts of fluoroethylene carbonate, 4-8 parts of carbonated hydroxybenzene olefin ester, 3-5 parts of overshoot resistant additive, 0.5-1.5 parts of flame retardant agent and 1-2 parts of hexamethyl disilazane or triphenyl phosphate. The lithium salts containing oxalate radial groups also can form a solid-state electrolyte membrane on the surface of a positive electrode, the high-voltage resistant performance of a battery can be improved; and the lithium salts containing the oxalate radial groups are friendly to an environment, and the environment cannot be polluted due to the electrolyte problem during disassembly and recycle of the battery.

The invention provides a non-woven ceramic membrane with excellent closed-pore performance for a lithium ion battery. The non-woven ceramic membrane comprises a non-woven base material and coatings with the closed-pore performance. The non-woven ceramic membrane is characterized in that the coatings with the closed-pore performance are uniformly coated on the two surfaces of the non-woven base material, the thickness of the non-woven ceramic membrane for the lithium ion battery is 30-50mu m, the porosity of the non-woven ceramic membrane is 40-60%, the average pore diameter of the non-woven ceramic membrane is 0.1-0.5mu m, the closed-pore temperature of the non-woven ceramic membrane is 120-130 DEG C, and the membrane rupture temperature of the non-woven ceramic membrane is 300-500 DEG C. The invention also provides a preparation technology of the non-woven ceramic membrane with the excellent closed-pore performance for the lithium ion battery. The non-woven ceramic membrane has the advantage that the disintegration or explosion of the battery is not easy cause; the adhesive power between the ceramic coating and the base material is increased, and no powder falls off the surface of the membrane under the conditions of bending, rubbing and the like; the consistency of the membrane thickness is substantially improved; and the non-woven ceramic membrane has good high temperature resistance performance, high ion penetrability, low resistance and stable electrochemical property.

The invention discloses a coil panel structure used for a wind power generation system under the extreme condition. The coil panel structure comprises a coil panel formed by epoxy resin and glass fabric in a high-pressure mode, wherein the coil panel is coaxial with a main shaft of an electric generator and is located between a drive magnetic steel panel and a driven magnetic steel panel; the coil panel is provided with a plurality of coils which are evenly distributed with the center of the panel as the circle center; the coils are trapezoid; the spaces between the adjacent coils on the coil panel in the radial direction of the coil panel are the same all the time; the panel surface of one end of the coil panel is provided with installation grooves which are of a blind hole structure; the coils are placed in the installation grooves and then are packaged through potting compounds. The coil panel structure has the characteristics of being high in hardness, not conductive to electricity and magnetism, and resistant to high temperature; the starting torque of the magnetic steel panels is small; due to the facts that the trapezoid coils are evenly distributed around the center of the coil panel and the spaces between the adjacent coils in the radial direction of the coil panel are the same all the time, eddy currents are prevented; due to the fact that the installation grooves are of the blind hole structure, the coil panel is firmer; meanwhile, the coils are placed in the installation grooves and then are packaged through the potting compounds, the insulation performance between the coils is enhanced.