6results about How to "Performance advantage" patented technology

The invention discloses a small-size high-efficiency large-current lithium battery active equalization circuit and a control method thereof, the small-size high-efficiency large-current lithium battery active equalization circuit comprises active equalization modules which are connected in parallel between two connected battery cells, and each active equalization module is composed of four switching tubes and a group of resonance branch circuit which is formed by connecting an inductor and a capacitor in series; n-1 active equalization modules are needed for a battery pack composed of N battery cells. The LC series branch serves as an energy temporary storage unit to replace a traditional inductance type single inductor or capacitance type multiple capacitors, the number of elements is reduced, meanwhile, low-loss energy transfer is achieved through resonance characteristics, and the equalization scheme has the advantages of being small in size, large in equalization current, small in equalization energy loss between battery cells, high in efficiency and the like.

The invention provides a composite crystal lithium manganate material, a lithium ion battery and a preparation method, and relates to the technical field of lithium ion batteries. The composite crystal lithium manganate material is composed of a monoclinic layered structure, an orthogonal layered structure and a tetragonal distorted spinel structure according to different proportions. By regulating and controlling the proportion of the three crystal structures, stable lithium manganate and capacitive lithium manganate can be obtained, and the capacity or cycle performance of the material can be improved. And the preparation method of the composite crystal form lithium manganate material is simple, controllable in condition and suitable for large-scale production.

A coal tar pitch-coated transition metal nitrogen-doped carbon nanotube composite electrode material, its preparation method, and its application are disclosed, belonging to the technical field of capacitor deionization electrode materials. The method includes: firstly, nitrogen-doping modification of carbon nanotubes to obtain nitrogen-doped carbon nanotubes; then, introducing a transition metal salt precursor and undergoing a first-stage heat treatment to obtain a transition metal-loaded nitrogen-doped carbon nanotube precursor composite material; subsequently, adding coal tar pitch and undergoing a second-stage heat treatment to obtain the coal tar pitch-coated transition metal nitrogen-doped carbon nanotube composite electrode material. In the obtained material, the nitrogen-doped carbon nanotubes provide a continuous conductive network and mass transfer channels, the transition metal component improves interfacial charge transport performance, and the coal tar pitch-derived carbon layer enhances structural stability and interfacial coupling ability, thereby improving the electroadsorption efficiency, rate performance, and cycle stability during capacitor deionization.

This invention discloses a poly(4-methyl-1-pentene) aerogel, its preparation method, and its applications. By using camphene as a solvent for poly(4-methyl-1-pentene), a thermally induced phase separation process is initiated by controlling the cooling rate, followed by conventional drying to obtain a white aerogel with good self-supporting properties. The preparation method is simple and mild, requiring no complex processes or expensive equipment, and can be produced on a large scale. The aerogel possesses a rich microporous structure and extremely high solar reflectivity, making it suitable for radiative cooling for passive cooling. Furthermore, the aerogel prepared by this method exhibits excellent superhydrophobicity and thermal insulation properties, enhancing its potential for outdoor applications.

The invention provides a preparation method of a lithium-rich manganese-based composite positive electrode material coated with lithium ferric chloride and an application of a solid-state battery, a lithium ferric chloride coating layer is obtained in situ on the surface of the lithium-rich manganese-based positive electrode material through spray drying, and compared with a common coating layer, the lithium ferric chloride coating layer has the advantages that the coating layer is more uniform; the solid electrolyte has the advantages of good compatibility, excellent conductivity and ion conductivity and the like, and is a novel halide positive electrode material researched and developed for adapting to the solid electrolyte, so that the interface incompatibility between the positive electrode and the solid electrolyte is reduced. In addition, the excellent conductivity of lithium ferric chloride can reduce the use of a conductive agent on the positive electrode side, reduce ion and electron diffusion tortuosity and improve the diffusion coefficient. Meanwhile, the synthesis method is simple and effective, the cost is low, and the prepared composite positive electrode material can be used as an integrated all-solid-state positive electrode material and is suitable for large-scale production.

This invention discloses a dynamic multi-spot projection optical system based on an LED light source, comprising an LED light source, a reflector, a grating sheet, a condenser lens, a concave mirror, and an optical reflection assembly. The LED light source is located at the bottom of the reflector, and the grating sheet has a light-transmitting area with a preset pattern shape. The reflector is composed of several planar mirrors A, and the concave mirror is composed of several planar mirrors B. The light emitted by the LED light source is formed into a patterned beam by the grating sheet, and the conical reflector divides and reflects the beam into multiple sub-beams, which are then guided to the condenser lens by the optical reflection assembly. This invention, using a low-cost, laser-free, and safe LED solution, achieves complex dynamic light and shadow effects comparable to or even surpassing laser projection through innovative optical design, while maintaining consistent image clarity within a projection distance range of 2-15 meters.