31results about How to "Guaranteed insulation properties" patented technology

A copper indium gallium selenium (CIGS) thin film solar cell provided with an aluminum nitride (AIN) thin film layer comprises a substrate, a molybdenum (Mo) back electrode layer, a CIGS absorbed layer, a cadmium dating sulphide (CdS) buffer layer, an intrinsic zinc oxide (i-ZnO) layer, a mixing zinc oxide (ZnO:AI) window layer and front electrode nickel aluminum. The AIN thin film layer is arranged between the substrate and the Mo back electrode layer and serves as an electric insulation impurity barrier layer when the substrate is made of metal, the AIN thin film layer serves as an impurity barrier and stress intermediate layer when the substrate is made of glass, and the AIN thin film layer serves as a heat buffer layer when the substrate is made of polymer. The thin film solar cell has the advantages of adopting simple and cheap magnetic control sputtering technology to prepare an AIN thin film to serve as the impurity barrier layer or the electrical insulating layer of the substrate, being capable of having good resisting effects and keeping insulation characteristics of metal atoms even through the solar cell is prepared at high substrate temperature, and providing prerequisite conditions for manufacturing inline type tinsel substrate thin film solar cells.

The invention discloses a normal-pressure preparation method of a high specific surface area intensive-hydrophobicity graphene oxide/silica composite aerogel. The method comprises the following steps:by taking tetraethoxysilane as a precursor, adding a graphene oxide turbid liquid under an acidic condition, adding an ethanol liquid of aminopropyl triethoxy silane and graphene oxide hydrosol, continuously dropping the ethanol liquid of aminopropyl triethoxy silane, forming a graphene oxide/silica composite alcogel under an ultrasonic condition, and performing aging, maturing, solvent replacement, surface modification, and normal-pressure drying, so as to obtain the composite aerogel. By adopting the method, a silane coupling agent, namely the aminopropyl triethoxy silane, is adopted to replace a conventional alkali catalyst, and the aminopropyl triethoxy silane is used as a silicon source and is easy in chemical bond combination with an acidic group carboxyl in the graphene oxide because of an alkali group amino in the aminopropyl triethoxy silane, so that the combination force can be improved, in addition, the formation time of the gel is greatly shortened, and the graphene oxide/silica composite aerogel which is high in specific surface area, intensive in hydrophobicity and low in heat conduction coefficient can be prepared.

Disclosed is an x-ray tube (11) wherein heat dissipation characteristics are improved and insulation characteristics are secured for a long time. In the x-ray tube (11), a supporting body (25) supports an anode target (21) at one end and is provided with a joint portion (28) on the outer surface of the other end portion. The joint portion (28) is joined with the inner surface of a cylinder portion (14a) of a second envelope (14) for improving heat transfer from the supporting body (25) to the second envelope (14) through the joint portion (28). A terminal (38) for supplying a voltage to the anode target (21) is provided on the end face (14b) of the other end portion of the second envelope (14). By arranging the terminal (38) away from the joint portion (28), the temperature of an insulating material (42) for insulation of the terminal (38) is kept low, thereby securing the insulation characteristics for a long time.

The invention relates to high pressure swivel joint that comprises ring outward element and inner cylindrical element. The inner element and outward element include at least two axially-spaced electric conductors which can rotate with the corresponding inner element and outward element, the conductors are at least two pairs, they are set to contact surfaces which are contacted with each other. One of the pair of conductor is set on the inner element, the other is at the outward element, and every conductor is connected with the relative voltage line which is extended to the input end and output end, the conductor is surrounded by insulating materials. The electric conductor of the outward element is set in the rabbet of the ring solid outer insulation ring, the electric conductor of the inner element is set in the rabbet of the ring solid inner insulation ring, the inner insulation ring and the outer insulation ring are coaxial, and they separately limit the boundary surface which extends along the axial, the boundary surfaces of ring are closely adjacent, the contact surface of the electric conductor is at or near the boundary surface.

The invention relates to a motor used coil which comprises: a chip wire with conducting function and a ceramic insulating film formed on the surface of the chip wire; the stator core of the sensing motor of the motor used coil is formed by a plurality of round laminated silicon-steel sheets; the inner around side of the stator evenly forms a plurality of stator coil grooves on shaft direction; the stator coil grooves form radial radioactive type structure; the coil end turn of the stator coil is fixed on the stator core by the insulating film; the method for making the stator of the sensing motor comprises: punching stage, heat processing stage, laminating stage, embedding stage and drenching stage.

The invention relates to an intelligent temperature controller applied to power distribution cabinet temperature monitoring. The intelligent temperature controller comprises a first master control chip which performs bidirectional communication with a first carrier wave communication module and a metering module used for metering consumption of a heater and an exhaust fan. An output end of the first master control chip is connected with an input end of a relay, and an output end of the relay is connected with control ends of first and second alternating current contactors. One end of the first alternating current contactor is connected with the metering module, and the other end of the first alternating current contactor is connected with the heater. One end of the second alternating current contactor is connected with the metering module, and the other end of the second alternating current contactor is connected with the exhaust fan. The invention can overcome defects that the temperature control range of a temperature controller is required to be manually set and cannot be remotely controlled and adjusted; the metering function is achieved, that whether the threshold of temperature control is reasonable or not can be determined, and remote control is achieved; in addition, the intelligent temperature controller and an intelligent temperature controller system adopt power line carrier communication based on a high speed narrowband protocol, thereby being stable and fast in communication and convenient in networking.

The invention discloses a top cover assembly, an assembling method of the top cover assembly and a battery, the top cover assembly comprises a top cover piece, a terminal post, a sealing piece, a lower plastic piece and an electric connecting piece, the top cover piece is provided with a post matching hole, the terminal post is arranged in the post matching hole in a penetrating manner and is provided with a first connecting surface and a second connecting surface which are oppositely arranged, and the sealing piece is arranged on the first connecting surface; the sealing piece is arranged on the terminal pole in a sleeving mode and clamped among the terminal pole, the inner circumferential wall of the pole matching hole and the upper surface of the top cover piece, the lower plastic piece is attached to the lower surface of the top cover piece, and the electric connecting piece is attached to the lower plastic piece and connected with the terminal pole. According to the top cover assembly, the overlapping height of the terminal post and the top cover plate is increased on the premise of ensuring insulation of the terminal post and the top cover plate, so that the energy density of a battery cell is improved.

The invention discloses an MLCC (multilayer ceramic capacitor) dielectric material with an excellent insulation characteristic. BaTiO3 powder serves as a base material, components including, in percentage by mass, 0.3%-0.8% of Na0.5Bi0.5TiO3, 0-1.5% of (NiO)(1-x)(NbO2.5)x, 0-0.5% of (MnO)(1-y)(NbO2.5)y and 1.0%-3.0% of CaZrO3 are added, wherein x ranges from 0.6 to 0.8, and y ranges from 0.4 to 0.6. BaTiO3 powder serves as the base material, Na0.5Bi0.5TiO3 is added, and a BT-NBT mixture is prepared after calcination; (NiO)(1-x)(NbO2.5)x, (MnO)(1-y)(NbO2.5)y and CaZrO3 are added to the BT-NBT mixture, the mixture is subjected to ball milling, dried, sieved, granulated and pressed into a green body, the green body is calcined in the nitrogen and hydrogen mixed atmosphere at the temperature of 1,300-1,320 DEG C, and the MLCC dielectric material is prepared. The MLCC dielectric material has the capacitance change rate smaller than or equal to plus or minus 15%, high dielectric constant (41729), lower dielectric loss (0.026) and the resistivity higher than 1011 omega.cm within the temperature zone of subzero 55-150 DEG C.

The invention discloses a boron nitride composite thermal interface material which comprises a high polymer material matrix, a boron nitride heat conduction filler and a phase change heat conduction filler; the boron nitride heat conduction filler and the phase change heat conduction filler fill into the high polymer material matrix in a blending manner. According to the invention, the boron nitride heat conduction filler can significantly improve the overall heat conductivity of the thermal interface material and ensure the insulation characteristic of the thermal interface material; the phase change heat conduction filler provides the capability of solving instantaneous high heat flow or periodic high heat flow for the thermal interface material by utilizing phase-change latent heat of the phase-change heat conduction filler; the high polymer material matrix ensures the flexibility and compressibility of the thermal interface material, can fully fill the gap between the electronic component and the heat dissipation module, and also serves as a carrier of the phase change heat conduction filler, so that the problem of overflow of the traditional phase change material is avoided.

The invention belongs to the technical field of vacuum switches, and relates to a vacuum circuit breaker and a supporting conductor structure thereof. The supporting conductor structure comprises a conductive supporting cylinder and a lower conductive seat arranged at the bottom of the conductive supporting cylinder, wherein the conductive supporting cylinder is used for being conductively connected with a moving end conductive rod; cooling fins are arranged on the outer portion of the conductive supporting cylinder so that heat on the conductive supporting cylinder can be conducted out. After the cooling fins are added, the heat dissipation area can be increased, the natural heat exchange capacity and the radiation heat exchange capacity between the conductive supporting cylinder and the outside are improved, and heat on the conductive supporting cylinder can be rapidly conducted out, and the conductive supporting cylinder is connected with moving and static contacts, so that the temperature of the moving and static contacts can be reduced after heat on the conductive supporting cylinder is conducted out, plastic deformation of the moving and static contacts in the opening and closing process is avoided, and the mechanical characteristic and the insulation characteristic of a vacuum arc-extinguishing chamber are ensured.

The invention discloses a commercial vehicle fuel cell system, and relates to the field of new energy vehicles. The problem that an existing system is low in integration degree and space utilization rate is solved. The system specifically comprises an integrated frame and an electric pile module. The outer wall of the top of the integrated frame is fixedly connected with a key component mechanism. The key component mechanism comprises an air treatment assembly, a hydrogen treatment assembly and a cooling assembly. The outer wall of the top of the key component mechanism is fixedly connected with a fuel cell assembly, and the top outer wall of the fuel cell assembly is fixedly connected with an electrical assembly. According to the fuel cell system, as a main framework of the system, the integrated frame is arranged and can achieve a supporting effect and fix the whole fuel cell system, and related elements can be fixed and disassembled in a detachable mode, so that assembly and maintenance of the system are greatly facilitated; and related parts can be arranged around the integrated frame, so that the integration level and the space utilization rate are improved.

The invention provides a metal magnetic powder core, a preparation method and application thereof. The preparation method comprises the steps that metal magnetic powder and a passivator are mixed to form slurry; after aluminum hydroxide gel and the slurry are mixed, drying and sieving are conducted in sequence; and mixing the lubricating powder with the sieved powder, carrying out compression molding, and then carrying out heating treatment to obtain the metal magnetic powder core. The method comprises the following steps: passivating the surfaces of metal magnetic powder particles by using a passivating agent, then adding aluminum hydroxide gel, and reacting the passivating agent and the aluminum hydroxide gel on the surfaces of the metal magnetic powder particles to generate an aluminum oxide insulating layer. The metal magnetic powder core provided by the invention has relatively good insulation effect and high temperature resistance, and the insulation effect among the metal magnetic powder particles is ensured, so that the eddy current loss is greatly reduced.