Abstract: The present invention relates to a polycarbonate alloy material, a preparation method therefor and a use thereof. The polycarbonate alloy material includes the following components in parts by weight: 10-99.9 parts of a polycarbonate resin, 5-50 parts of a styrene resin, 0.05-2 parts of a modified metal hydroxide, 1-30 parts of a toughening agent, and 0.01-2 parts of a stabilizer; the modified metal hydroxide is a metal hydroxide subjected to surface treatment with dimethylsiloxane and/or methylphenylsiloxane; and the styrene resin is at least one of a styrene-acrylonitrile copolymer or a styrene-butadiene-styrene copolymer. The polycarbonate alloy material has a low combustion rate as well as excellent mechanical properties and appearance, and can be widely used in fields such as electronic and electrical appliances, transportation, household appliances, and aerospace.

Abstract: The invention relates to an end product for air-conditioning indoor unit, which comprises a heat exchange tube through which air and refrigerant exchange heat; a heat exchange fin on which a tube hole for passing through the heat exchange tube is formed and the surface of which is coated with a hydrophilic coating containing photocatalytic material; and an ultraviolet lamp arranged at or near the heat exchange fin, so that the ultraviolet light of the ultraviolet lamp can cover the surface of the heat exchange fin coated with the hydrophilic coating. The invention further provides an air-conditioning indoor unit configured with the end product and a method for coating heat exchange fins of the end product. The end product for air-conditioning indoor unit according to the invention can achieve highly efficient air purification.

Abstract: The present application discloses a back contact solar cell, a preparation method therefor, and a photovoltaic module. In one example, a back contact solar cell includes a substrate, a first doped layer and a second doped layer alternately arranged on a first surface of the substrate. A doping type of the first doped layer is opposite to a doping type of the second doped layer. A first isolation region is provided between an edge of the substrate and a boundary of the first doped layer adjacent to the edge, a second isolation region is provided between the edge of the substrate and a boundary of the second doped layer adjacent to the edge. A width of at least a portion of the first isolation region is greater than a width of at least a portion of the second isolation region.

Abstract: The present disclosure provides a solar cell and a photovoltaic module. The solar cell includes: a silicon substrate and a passivation anti-reflection layer located on the silicon substrate. A surface of the silicon substrate has a textured structure, including: a plurality of quasi-pyramidal structures, which includes a pyramidal face and a pyramidal apex. The pyramidal face includes: a first sub-pyramidal face away from the pyramidal apex, and a second sub-pyramidal face. In the pyramidal face of the quasi-pyramidal structure, a surface morphology of the first sub-pyramidal face is different from a surface morphology of the second sub-pyramidal face. The passivation anti-reflection layer includes: a first portion located on the first sub-pyramidal face, and a second portion located on the second sub-pyramidal face. In the passivation anti-reflection layer, a thickness of the first portion is greater than thickness of the second portion along the same direction towards the pyramidal apex.

Abstract: This disclosure provides a back contact solar cell and a method for manufacturing a back contact solar cell. In one example, a back contact solar cell includes a silicon substrate having first regions and second regions alternately distributed on a back surface of the silicon substrate, and a first doped semiconductor layer formed on a first region on the back surface of the silicon substrate. A groove structure concaving inward the silicon substrate relative to a surface of the first region is formed on a second region. An end portion of the first doped semiconductor layer adjacent to the second region is arranged in a suspended manner.

Abstract: The present invention provides a polyamide composite material, which includes the following components in parts by weight: 25-85 parts of a polyamide resin; 10-50 parts of a glass fiber; 5-25 parts of polytetrafluoroethylene; and 0.1-2 parts of at least one of a K/Na/Ca/Mg/Ba/Zn/Li/Al salt of montanic acid. The montanate can effectively inhibit free hydrogen fluoride in the polytetrafluoroethylene, thereby effectively inhibiting free silicon in the glass fiber and improving the electrical performance of the material.

Abstract: The invention discloses a method of photovoltaic cell parameter identification based on the improved equilibrium optimizer algorithm, which comprises: step 1, establishing PV cell model and fitness function; step 2, based on the measured output I-V data, predicting output data of PV cell by a BP neural network; step 3, identifying PV cell parameters by using IEO algorithm until convergence conditions of the IEO algorithm are reached, and finally outputting the optimal identified parameters. Solving technical problems of the existing technology such as, cannot reach the optimal parameter identification, and being easy to be trapped into the local optimal.

Abstract: This application provides a fluid distributor and a heat exchanger. The fluid distributor includes: a first plate-shaped member in which an inlet flow passage is formed; a second plate-shaped member in which a first outlet flow passage and a second outlet flow passage spaced apart in a height direction are formed; a flow guide frame sealingly fixed between the first plate-shaped member and the second plate-shaped member, having a first flow guide space and a second flow guide space partitioned inside. The flow guide frame includes a flow equalizing plate, and the flow equalizing plate includes a flow equalizing plate bottom portion, and flow equalizing plate extension portions which extend upward from the flow equalizing plate bottom portion to two sides of the flow equalizing plate bottom portion while being inclined in the height direction. This application improves uniformity and a fault tolerance of a refrigerant distribution.

Abstract: The present application provides implementations relating to a solar cell, a preparation method therefor, and a photovoltaic module, and relates to the field of photovoltaic technologies. In an implementation, a solar cell includes a silicon substrate, a front-side passivation anti-reflection layer located on a light-facing side of the silicon substrate, and a back-side passivation anti-reflection layer located on a back side of the silicon substrate. The silicon substrate includes a light-facing surface and a back surface. The light-facing surface of the silicon substrate includes a first textured structure, and at least a part of regions of the back surface of the silicon substrate includes a second textured structure. Apex angles of the second textured structure are greater than apex angles of the first textured structure.

Abstract: The invention relates to a heat exchange fin, with a tube hole formed thereon for a heat exchange tube to be inserted into. A corrugated structure is arranged near the tube hole. The corrugated structure comprises a wave section arranged along a flow direction of fluid medium. The distance between two adjacent wave crests or wave troughs of the wave section is one wavelength. The total length of the wave section is 1-1.5 times the wavelength. A bridge plate is arranged at the wave crests and wave troughs of the wave section, respectively. The bridge plate deflects relative to the wave crests and wave troughs by a preset distance. The invention also proposes a heat exchanger configured with the heat exchange fins, and a heat pump system configured with the heat exchanger.

Abstract: The present disclosure discloses a solar cell and a photovoltaic module. In one example, a solar cell includes a silicon substrate; a first doped crystalline silicon region and a second doped crystalline silicon region that are arranged on a back surface of the silicon substrate; and an isolation groove, configured to isolate the first doped crystalline silicon region and the second doped crystalline silicon region. A textured structure with pyramidal structures is arranged at a bottom of the isolation groove, a distribution density of apexes of the pyramidal structures ranging from 25/100 ?m2 to 80/100 ?m2. The back surface of the silicon substrate includes an overlapping region where the first doped crystalline silicon region and the second doped crystalline silicon region overlaps, the overlapping region being a polished surface.

Abstract: An anesthesia machine includes an interface for receiving a vaporizer, a housing having an outer surface, a button having an outer surface, and configured to receive an engagement force from a user, and a latch including an engagement portion, and configured to selectively secure the vaporizer to the anesthesia machine via the engagement portion according to a position of the button, wherein a positional relationship between the outer surface of the button with the outer surface of the housing indicates whether or not the vaporizer is correctly received by the interface of the anesthesia machine

Abstract: This disclosure provides a back contact solar cell and a method for manufacturing a back contact solar cell. In one example, a back contact solar cell includes a silicon substrate having first regions and second regions alternately distributed on a back surface of the silicon substrate, and a first doped semiconductor layer formed on a first region on the back surface of the silicon substrate. A groove structure concaving inward the silicon substrate relative to a surface of the first region is formed on a second region. An end portion of the first doped semiconductor layer adjacent to the second region is arranged in a suspended manner.

Abstract: The present disclosure provides back-contact solar cells, and methods for manufacturing back-contact solar cells. In one aspect, a back-contact cell comprising a silicon substrate, a first doped semiconductor layer on a back surface of the silicon substrate in first regions, and a second doped semiconductor layer on the back surface of the silicon substrate in second regions. The first regions and the second regions are alternately distributed at intervals. The back surface of the silicon substrate comprises an isolation region between a first region and a second region adjacent to the first region. A surface of the isolation region is recessed into the silicon substrate. A depth by which the surface of the isolation region is recessed into the silicon substrate relative to the surface of the at least one of the first regions is less than 3000 nm.

Abstract: The present invention belongs to the technical field of solid-state lithium batteries, and particularly discloses a hybrid solid-liquid electrolyte lithium battery. The lithium battery includes a positive electrode plate, a negative electrode plate and a composite solid electrolyte sheet arranged between the positive electrode plate and the negative electrode plate, wherein the composite solid electrolyte sheet includes a solid electrolyte core layer and buffer adhesive layers arranged on both sides of the solid electrolyte core layer, wherein the solid electrolyte core layer is mainly formed by mixing a core layer inorganic solid electrolyte, an electrolyte polymer and an electrolyte additive, and the buffer adhesive layer mainly formed by mixing a buffer adhesive layer inorganic solid electrolyte, a buffer adhesive layer lithium salt and a buffer adhesive layer additive.

Abstract: The present invention relates to a connector for a medical device, a connector assembly, and an anesthesia machine system. The connector for a medical device includes: a first housing, including a first end and a second end opposite each other; a second housing, the second end of the first housing being configured to be floatingly connected within the second housing, and the first end being exposed out of the second housing; and terminals, provided on the first end of the first housing, the terminals including a power supply terminal and a signal terminal.

Abstract: The present disclosure discloses a solar cell and a manufacturing method therefor. An example method includes providing a semiconductor substrate having a first region and a second region, forming a tunneling passivation layer on at least the first region, and perform wet chemical processing on the first region and the second region to form a first surface structure in the first region and a second surface structure in the second region. An etching rate of etching the first region that is covered by the tunneling passivation layer is different from an etching rate of etching the second region. The first surface structure is different from the second surface structure.

Abstract: A heat exchanger is disclosed. The heat exchanger comprises an inlet header that comprises first compartments separated by first walls, a plurality of microchannel tubes extending between and in fluidic connection with the first compartments and an outlet header of the heat exchanger, and a first distributor comprising an inlet port and a plurality of outlet ports. A plurality of feeder pipes is configured between the first compartments of the inlet header and the outlet ports of the first distributor, such that each of the first compartments remains fluidically connected to one of the outlet ports of the first distributor by one of the feeder pipes to allow the flow of an equal volume of fluid from the first distributor into each of the first compartments. Further, a second distributor is configured within the inlet header to mix and allow the flow of fluid into each of the first compartments.

Abstract: A method, apparatus and device for allocating edge-computation resources and a computer-readable storage medium. The method includes: acquiring WiFi-connection data of terminal devices to be allocated; according to the WiFi-connection data and resource-occupation states of the edge servers, determining target edge servers that the terminal devices to be allocated individually correspond to; and connecting the terminal devices to be allocated to the individually corresponding target edge servers, and controlling the target edge servers to start up services of the individually corresponding terminal devices to be allocated. The present application may automatically select a balanced load-sharing networking strategy in response to the initial networking of a distributed WiFi edge-computation system or a WiFi terminal device being newly added, to realize the effect of load sharing of the edge-computation resources, and improve the efficiency of the application of edge computation.

Abstract: The present invention relates to a flame-retardant nylon composite and use thereof, including components: 55 parts to 80 parts of a nylon resin; 1 part to 30 parts of a red phosphorus; and 0.01 part to 2 parts of a phenolic substance. According to the present invention, by adding a small amount of the phenolic substance to the red phosphorus flame-retardant nylon composite, phosphorus precipitation can be effectively inhibited, and a phosphine precipitation amount can be reduced to 30 ppm or less, while good electrical performances can be maintained, which is applicable in fields of connectors, contactors, etc. in electronic appliances.