9results about How to "Extended conduction path" patented technology

The invention belongs to but not limited to the technical field of electrode materials, and particularly relates to a high-tap-density lithium nickel manganese oxide positive electrode material, a preparation method and a lithium ion battery, the chemical general formula of the high-tap-density lithium nickel manganese oxide positive electrode material is LiNi < 0.5-x > Mn < 1.5-y > M < x > N < y > O < 4 >, 0.1, 0 < = y < lt >; 0.1, M and N are doping elements and comprise one or more of Mg, Co, Al, Zr, W, Sb, Ta and Ti; the material is micron-sized spherical secondary particles formed by stacking and aggregating nano-sized octahedral primary particles, and is uniformly dispersed without agglomeration; the spherical secondary particles are formed by mixing spherical secondary particles with large and small particle size distribution, and the average particle size range of the large particles is 3lt; d < 50lt >; the average particle size range of the small particles is 1lt; d < 50lt >; 2 [mu] m.

The invention relates to the technical field of high-density packaged chips, in particular to a high-density packaged chip and a packaging structure, the high-density packaged chip comprises a mounting shell, a cover plate, a positioning mechanism and a circuit connecting mechanism, a substrate is arranged in the mounting shell, a mounting groove is formed in the substrate, and a chip is placed in the mounting groove; the cover plate is arranged at the top of the mounting shell; a silver paste bonding layer is arranged in the mounting groove and is used for fixing the chip; a heat-conducting plate is arranged at the top of the chip; the positioning mechanism comprises a positioning plate, a positioning bolt and a clamping block; the positioning plate is arranged above the heat conducting plate, the clamping blocks are arranged at the two ends of the positioning plate, and the inner walls of the ends, extending out of the mounting shell, of the clamping blocks are clamped with the outer side wall of the mounting shell; a positioning hole is formed in the base plate; a positioning bolt is arranged at the bottom of the positioning plate; a plurality of welding spots are arranged on the two sides of the top of the heat conducting plate and connected with the circuit connecting mechanism. The packaging structure provided by the invention has good thermal conductivity, and provides enough space for integration of other elements while ensuring stable installation of the chip.

The invention relates to fireproof and heat-insulating glass and a preparation process thereof, and relates to the field of fireproof and heat-insulating materials, the fireproof and heat-insulating glass comprises a heat-insulating film layer I, a fireproof gel layer I, a glass substrate, a fireproof gel layer II and a heat-insulating film layer II, the fireproof gel layer I and the fireproof gel layer II are prepared by adopting a mixed gel solution, the mixed gel solution is prepared from the following raw materials in parts by mass: 80 to 100 parts of bi-crosslinking gel monomer, 5 to 10 parts of crosslinking agent, 20 to 30 parts of composite flame retardant and 1 to 3 parts of initiator. The preparation process comprises the following steps: preparing a mixed gel solution, preparing the fireproof gel layer I and the fireproof gel layer II on the surface of the glass substrate, hot-pressing and laminating the heat insulation film layer I to the surface of the fireproof gel layer I, and hot-pressing and laminating the heat insulation film layer II to the surface of the fireproof gel layer II to obtain the fireproof heat insulation glass. The fireproof and heat-insulating glass has the effect of improving the interlayer binding force of the fireproof and heat-insulating glass, the stability can be improved, and the fireproof and heat-insulating performance is further improved.

The invention relates to the technical field of batteries, and discloses a battery cell and a battery pack. The battery cell comprises an assembly main body and an anti-explosion valve. The assembling main body is provided with a mounting hole; the anti-explosion valve comprises an anti-explosion valve body, a flange edge arranged on the outer ring of the anti-explosion valve body and a transition edge connected with the anti-explosion valve body and the flange edge, and the flange edge and the transition edge protrude out of the plane where the anti-explosion valve body is located. The explosion-proof valve body is arranged in the mounting hole, and the flange edge is arranged on the first end face of the mounting hole and welded to the assembly body. According to the battery cell provided by the invention, the explosion-proof valve is provided with the flange edge, the flange edge protrudes out of the plane where the explosion-proof valve body is located, and the explosion-proof valve is welded with the assembly main body through the flange edge, so that compared with the mode that the explosion-proof valve body is directly welded with the assembly main body, the conduction path of welding heat can be effectively prolonged; the anti-explosion valve is prevented from being deformed and cracked due to welding heat, so that the anti-explosion valve can be opened under the designed pressure, and the safety of the battery cell and the battery pack is ensured.

The utility model provides a battery and a power utilization device, and relates to the technical field of batteries, the battery comprises: a housing assembly, which comprises a housing and a cover plate, one end of the housing along the axial direction is provided with an opening, and the cover plate seals the opening; the electrode assembly is arranged in the inner cavity of the shell, and a tab is arranged at one end, facing the cover plate, of the electrode assembly; a first heat conduction structure and a second heat conduction structure are arranged between the tab and the cover plate, the first heat conduction structure and the second heat conduction structure are arranged at intervals in the radial direction of the cover plate, heat generated on the tab is transferred to the cover plate by the first heat conduction structure and the second heat conduction structure, and the first heat conduction structure and the second heat conduction structure are electrically connected with the tab and the cover plate respectively. According to the battery disclosed by the utility model, at least two heat conduction areas exist between the electrode assembly and the cover plate, so that a heat conduction path is increased, and the heat dissipation efficiency of the battery is favorably improved.

The invention relates to a stator heat dissipation structure and an air cooling motor, and belongs to the technical field of motor heat dissipation, the stator heat dissipation structure comprises a radiator and a plurality of stator cores, the radiator is provided with a plurality of first heat dissipation channels, the first heat dissipation channels penetrate from the top to the bottom of the radiator, and the peripheral surface of the radiator is provided with a plurality of fixing holes; heat conduction rods are arranged at the top and the bottom of the stator core, and a coil is wound around the stator core and the heat conduction rods together, namely, the stator core and the heat conduction rods are fixed through the coil; the stator iron core is arranged along the circumferential direction of the radiator, the heat conduction rods are in one-to-one correspondence with the fixing holes, the heat conduction rods are in interference fit with the corresponding fixing holes, and one side, facing the radiator, of the stator iron core is attached to the radiator. The stator core has the effect of improving the heat dissipation efficiency of the stator core.

The utility model discloses a kind of built-in cavity heat preservation bricks, including brick body ontology, the middle part of the brick body ontology is provided with first longitudinal cavity, the upper and lower end surfaces of the brick body ontology are respectively provided with the upper end through hole and the lower end through hole with first longitudinal cavity intercommunication, the utility model is by being provided with first longitudinal cavity, transverse passage, oblique air hole and wave-shaped reflection coating, effectively form the multiple heat preservation structure of "heat barrier-guiding-reflection", significantly prolong heat conduction path, improve thermal resistance, enhance structural strength and stability: by being provided with support rib and vertical partition, construct mechanical support skeleton in cavity, improve brick body compression resistance, while maintaining the stability of cavity, realize reliable assembly: the rectangular tenon and groove, positioning hole and positioning column achieved by being provided with, realize the reliable splicing of brick body up and down and transversely, avoid heat bridge formation, improve construction efficiency, facilitate modular design and construction.

The invention relates to a semiconductor device and a preparation method, and relates to the technical field of semiconductors, in the semiconductor device and the preparation method, a dielectric layer with a first groove is arranged on a substrate, then a grid electrode is formed in the first groove, and in the direction perpendicular to the substrate, the height of the grid electrode is larger than that of the first groove; and forming a conductive structure on the side wall of the grid electrode. As the conductive structure can be conductive, electric field lines in the region, close to the conductive structure, of the grid can be guided and dispersed by the conductive structure, electric fields are prevented from being concentrated on the lower side of the grid, and the breakdown voltage of the device is increased. Meanwhile, the conductive structure widens the conduction path of the current, increases the current intensity, and further reduces the specific on-resistance. At the moment, the thickness of the dielectric layer on the lower side of the conductive structure is larger than that of the dielectric layer on the lower side of the gate, and the voltage-resistant performance of the device can be further improved.

The utility model provides a battery and a power utilization device, and relates to the technical field of batteries, the battery comprises: a housing assembly, which comprises a housing and a cover plate, one end of the housing along the axial direction is provided with an opening, and the cover plate seals the opening; the electrode assembly is arranged in the inner cavity of the shell, and a tab is arranged at one end, facing the cover plate, of the electrode assembly; wherein a heat conduction structure and a heat conduction pad are arranged between the tab and the cover plate, the heat conduction structure and the heat conduction pad are arranged at an interval along the radial direction of the cover plate, the heat conduction structure and the heat conduction pad transmit heat generated on the tab to the cover plate, and the heat conduction structure is electrically connected with the tab and the cover plate. According to the utility model, at least two heat conduction areas exist among the battery, the electrode assembly and the cover plate, so that a heat conduction path is increased, the heat dissipation efficiency of the battery is favorably improved, the heat dissipation mode of the battery is more suitable for the system-level heat management requirement, and the application range of the battery is expanded.