7results about How to "Lightweight reduction" patented technology

The bracket assembly and automobile of this application belong to the field of automotive technology. The bracket assembly includes a support plate and a support frame. The support frame has a support body and a hollow area. The support body spans across both ends of the support plate along its length. The hollow area and the support body are arranged along the width of the support plate. The support frame is fixed to the support plate. The elastic modulus of the material of the support frame is greater than that of the material of the support plate, and the density of the material of the support plate is less than that of the material of the support frame. The bracket assembly and automobile of this application, on the one hand, can reduce the probability of vibration and abnormal noise of the rear shelf during vehicle operation, and the rear shelf, supported by the bracket assembly, can bear a larger weight to better realize the storage function of the rear shelf. On the other hand, the bracket assembly composed of the support plate and the support frame has a lighter structural weight, which can reduce the overall vehicle weight.

The utility model discloses a pole cooling plate for a cylindrical battery, and belongs to the technical field of battery cooling. The cooling plate comprises two long-strip-shaped aluminum alloy plates which are the first cooling plate and the second cooling plate respectively, trapezoidal cooling flow channels which are arranged in parallel are formed in plate bodies, a contact interface used for being attached to a battery pole column is formed on one side of the cooling plate, and a protruding face is arranged on the other side of the cooling plate. Two ends of the cooling plate are respectively provided with an inlet and an outlet and connected with an external cooling system; the circular groove matched with the pole in shape is formed in the binding face, the contact gap is filled with heat conduction silica gel or a phase change material, and meanwhile, the space between the cooling plate and the battery is filled with insulating powder or provided with an insulating layer, so that the heat conduction efficiency is improved, and the electrical safety is guaranteed. The structure can realize synchronous cooling of a plurality of pole regions, improves heat dissipation efficiency, temperature control precision and module safety, and is suitable for heat management requirements of a new energy automobile battery pack and an energy storage system.

The invention provides a light-weight anti-radiation door body based on a nano composite material, and belongs to the technical field of anti-radiation doors. A door frame; the door body is movably hinged to the door frame; wherein the door frame comprises a solid door and a cavity body; a multi-layer composite filling structure of epoxy resin, nano tungsten carbide, sound insulation cotton, nano boron nitride and high-density polyethylene is adopted, the scattering design of the corrugated alloy barrier plate is combined, efficient synergistic shielding and an excellent sound insulation effect on various rays are achieved, a traditional pure lead material is partially or completely replaced with a high-performance nano composite material, and the anti-radiation performance of the composite material is improved. The self-weight of the door body is reduced on the premise that the shielding effectiveness is ensured or even improved, meanwhile, the door frame is of an integrally-formed solid and cavity composite structure, excellent overall rigidity and structural stability are provided while light weight is ensured, loads on a building and an opening and closing mechanism are reduced, and installation and application are convenient.

The application discloses a preparation method of environment-friendly aerogel particles for aerogel mortar, which comprises the following steps: placing wet gel particles and a drying medium in a drying kettle; the wet gel is composed of a gel skeleton and an intraparticle solvent, the intraparticle solvent is single or mixed alcohol, and the pore size is micro-nano level; the drying medium is single or mixed alcohol; and the purpose of removing the residual impurities in the aerogel particles is achieved by replacing the residual alcohol and by-product gas in the aerogel pores with an inert gas with a free path greater than the nanometer pore size of the aerogel. The prepared silica aerogel particles have remarkable advantages in environmental protection, and the low thermal conductivity, light weight, heat insulation, hydrophobicity and other characteristics make the silica aerogel particles have wide application prospect and environmental protection benefits in the field of environment-friendly mortar in the building field.

This invention relates to the field of power transformer manufacturing technology, and particularly to a transformer winding structure and its wiring method based on a copper-aluminum eutectic plate. The invention discloses a transformer winding structure based on a copper-aluminum eutectic plate, comprising a winding body formed by alternating layers and winding of a copper-aluminum eutectic material and an interlayer insulator. The copper-aluminum eutectic material includes a copper surface layer, an aluminum substrate, and a eutectic layer. The thickness of the eutectic layer is 300nm-500nm, and the main crystalline phases of the eutectic layer are Al2Cu and Al4Cu9. The interfacial bonding strength of the eutectic layer is ≥300MPa. This invention's transformer winding structure and wiring method based on a copper-aluminum eutectic plate fundamentally eliminates the risks of delamination and heat generation by forming a high-strength, non-brittle nano-eutectic layer at the copper-aluminum interface. While ensuring interface reliability, it fully leverages the lightweight and cost advantages of aluminum-based materials, and utilizes the surface copper to achieve reliable electrical connections.

This invention discloses a microwave-tunable composite ceramic material and its preparation method, belonging to the technical field of microwave ceramic materials. The material is composed of Ba... 1‑x Sr x It consists of three phases: TiO3, Li2Mg3TiO6, and Mg2SiO4, among which Ba 1‑x Sr x The mass percentage of TiO3 is 30%–95%, and the value of x ranges from 0.3 to 0.7; the mass percentage of Li2Mg3TiO6 is 3%–60%, with the remainder being Mg2SiO4. This material has a moderate dielectric constant, low dielectric loss, and high tuning efficiency, combining high performance with a low sintering temperature. It can be used in microwave devices such as phase shifters, tunable filters, delay lines, oscillators, resonators, and phased array antennas.

The present application relates to aircraft, and specifically provides a turbofan, aiming at solving the problem that the existing turbofan is too large in size and too heavy in weight, and is not suitable for the demand of low-altitude aircraft. To this end, the second center ring of the turbofan of the present application is sleeved outside the first center ring, the first and second support rings are correspondingly connected at both ends of the first and second center rings, the first and second spoke rings are correspondingly connected at both ends of the second center ring, the first and second spoke rings are further curved towards the height center line of the second center ring and finally form abutment, and the plurality of first blades of the first spoke ring and the plurality of second blades of the second spoke ring are mirror images. The turbofan is a mechanical full balance design, the turbofan is manufactured by using a 3D printing process, the turbofan removes the reaction force support system of the propeller, and can meet the demand of low-altitude aircraft on the light weight, high efficiency and low failure rate of the propeller.