139results about How to "Diffusion in time" patented technology

The present invention relates to a high magnetic induction grain-oriented silicon steel stripe nitriding treatment method, which comprises the following steps smelting, continuously casting, billet heating, hot rolling, normalizing and cold rolling, decarburization annealing; one-time nitriding; homogenized treating; coating a magnesium oxide isolation agent; high temperature annealing; coating an insulating layer, stretching, flattening for next application. The homogenization treatment can ensure that the metastable nitrogen formed by nitriding is dispersed in the steel strip in time, and conversed to stable AlN simultaneously. So that enough stable AlN is formed in the steel strip before high temperature annealing, the stability of the inhibitor state can be ensured in a large high temperature annealing process range, and the stability of magnetic property can be ensured, thereby the bottom quality with excellent adhesion and no defect is obtained.

The embodiment of the invention discloses an information interaction system and method suitable for federated learning. The system comprises at least two participants and a coordinator, each participant is provided with a graph network, and the graph network comprises a plurality of nodes; each participant represents all nodes in the graph network of the participant with a fixed-length vector to obtain a representation vector of each node, training of a graph neural network model is performed based on the representation vectors of the nodes, and gradient information is uploaded to the coordinator in the training process; the coordinator corrects the gradient information uploaded by each participant according to the gradient information uploaded by all participants, and issues the correctedgradient information to each participant; and each participant receives the corrected gradient information fed back by the coordinator, and updates the representation vector of the node based on thecorrected gradient information of the coordinator. Information interaction can be realized under the condition of guaranteeing the information security of each participant.

The invention discloses double-temperature thermal safe silica gel. The double-temperature thermal safe silica gel comprises the following manufacturing materials in parts by weight: 100 parts of silicon rubber, 15 to 40 parts of white carbon black, 30 to 70 parts of heat-insulating filler, 15 to 40 parts of a heat-conducting filer, 10 to 35 parts of a flame retardant, 0.5 to 3 parts of a couplingagent, 5 to 10 parts of a structure control agent, 0.2 to 10 parts of a high-temperature catalyst, 0 to 5 parts of other aids and 0.4 to 2 parts of a vulcanizing agent. The double-temperature thermalsafe silica gel has the effects of dissipating heat at normal temperature or insulating heat at high temperature or under a fire disaster, and can dissipate heat generated by resistance, heat generation by friction as well as charging and discharging timely when being applied to components in a fire-resistant wire cable, a bus duct, an engine and a power battery to perform normal operation. Meanwhile, once the component is overheated to cause high temperature or fire disaster, the double-temperature material can be decomposed rapidly and can generate phase change under the action of a catalyst to form a hard ceramic material with a porous structure.

The invention relates to a chip package structure easy to cool and a package method of the chip package structure. The chip package structure comprises a substrate, wherein a package table is fixedlyconnected with a center of the substrate, slots are formed in two sides of the substrate, pins are inserted into the slots, movable blocks are movably connected with two sides of one end of each pin,a spring is fixedly connected with one end of each movable block, a chip body is inserted into a groove in the top of the package table, a package rack is arranged on the chip body, clamping grooves are formed in the bottoms of two sides of the package rack, clamping blocks are fixedly connected with the tops of two sides of the substrate, a heat conduction plate is fixedly connected with the bottom of the package rack, a heat absorption plate is fixedly connected with the bottom of the heat conduction plate, a heat conduction block is fixedly connected with the heat absorption plate, heat conduction rods are fixedly connected with two sides of the heat conduction block, a plurality of cooling fins are fixedly connected to a side wall of the heat conduction plate, dustproof nets are arranged at two sides of the top of the package rack, a plurality of cooling rods are fixedly connected to the top of the heat conduction block, a cooling plate is fixedly connected to a top end of each cooling rod, a plurality of cooling holes are formed in side walls of two sides of the package rack, and wires are electrically connected with two sides of the chip body.

The invention discloses a vented anchoring and grouting device for a common anchor rod and a using method thereof. The vented anchoring and grouting device includes an anchor rod, fastening nuts, a sealing washer, a venting grouting composite end socket, a tray, a venting grouting integrated pipe, an inflatable elastic grouting-stop plug, a guide protection cover, a sealing dustproof film, and ananchoring agent. According to the vented anchoring and grouting device for the common anchor rod, a venting passage and a grouting passage are separately arranged, and the venting grouting composite end socket is fixed in a borehole through the inflatable elastic grouting-stop plug; and according to the vented anchoring and grouting device for the common anchor rod and the using method thereof, inthe process of mounting the common anchor rod, by adding the device, a mounting hole can be directly used as a grouting hole for grouting without affecting normal pre-tightening force reinforcement of the common anchor rod, while a rock mass is reinforced, a common end socket anchoring anchor rod is changed to full length anchoring, the vented anchoring and grouting device solves the problems ofventing and plugging in the processes of anchoring and grouting support and grouting, the grouting effect is improved, and construction workload and the support cost of anchoring and grouting are reduced.

The invention relates to a high current resistant thermistor polymer composite material and a preparation method thereof, belongs to the fields of functional composite materials and electronic devices, and solves the problem that traditional positive temperature coefficient thermistor composite materials can not meet the requirements of high current resistance and high voltage resistance. The composite material comprises functional fillers and polymer, wherein the adding amount of the functional fillers is 4%-30% of the mass of the polymer; the functional filler is a filler with thermal conductivity and / or electrical conductivity, and the polymer is crystalline polymer. The functional fillers and the polymer are mixed by melt blending, and are hot-pressed to form a conductive polymer composite material; the conductive polymer composite material is cut; electrodes and leads are adhered to the surface; hot packaging processing is performed by using powdered epoxy resin; and the thermistor with positive temperature coefficient effect is prepared after cooling. The composite material of the invention can be used as a high performance thermistor in fields which require that the thermistor has performance of current resistance and voltage resistance, such as communication, electric power, power plant, etc.

The invention discloses a preparation method of a hydrogenation catalyst composition. The method comprises the following steps: adding a mixture of molecular sieves and organic amines as well as organic alcohols and / or organic acids before or in the process of preparing an alumina-hydrogenation active metal oxide composite oxide by a coprecipitation method; carrying out aging after gel forming is completed and then carrying out filtration, washing and drying; then carrying out forming, drying and roasting, thus obtaining the hydrogenation catalyst composition. A catalyst prepared by the method can organically combine the molecular sieves and alumina together with good combination degree and dispersion degree, thereby avoiding agglomeration and even blockage of the molecular sieves and alumina, simultaneously controlling the distribution of the hydrogenation components on various acidic components effectively and improving the usability of the catalyst. The hydrogenation catalyst composition prepared by the method is especially suitable for hydrogenation catalysts with relatively high requirements for acidity and relatively low requirements for hydrogenation properties.

Disclosed is an induction heating nitriding method for oriented silicon steel. The method comprises the steps that smelting and continuous casting are carried out, then a casting blank is heated, andthen subjected to hot rolling, normalizing, cold rolling and decarburization; and in an induction nitriding furnace, two stages of nitriding treatment are carried out: natural cooling to room temperature under dry N2 atmosphere, applying isolating agent, and high temperature purification annealing for standby use. Nitrides obtained by the nitriding method are numerous and evenly distributed, and the depth of a nitriding layer can reach the central part of the steel plate thickness, AlN particles on the central part of the steel plate thickness reach 1-1.5 per square micron, and the final magnetic performance is stable, and the deviation is small, that is, the fluctuation between batches does not exceed 0.02 T; at the same time, the consumption of ammonia gas is reduced by not less than 40%, and the operation is simple, the implementation is easy, and mass production is easy to realize.

The invention discloses a preparation method of a hydrogenation catalyst containing molecular sieves. The method comprises the following steps: adding a mixture of the molecular sieves containing hydrogenation active metal components and organic amines as well as organic alcohols and / or organic acids in the amorphous alumina gel forming process; carrying out aging after amorphous alumina gel forming is completed and then carrying out hydrothermal treatment, filtration, washing and drying; then carrying out forming, drying and roasting, thus obtaining the hydrogenation catalyst. By adopting the method, the molecular sieves and alumina can be organically combined together with good combination degree and dispersion degree, agglomeration and even blockage of the molecular sieves and amorphous alumina can be avoided, and meanwhile, the hydrogenation and cracking functions of the catalyst can be effectively adjusted and the usability of the catalyst can be improved. The catalyst prepared by the method is suitable for the shallow cracking and deep hydrogenation processes.

The invention discloses a cloud analysis system for a nuclear biological and chemical threat. The cloud analysis system comprises a detection part, a cloud analysis part, a display part and an alarm part, wherein the detection part comprises a poisonous gas monitoring device and a weather detection device; the cloud analysis part is used for storing an SLAB heavy gas dispersion model, a plurality of poisonous gas types, a plurality of molecular weights of gases, a plurality of poisonous gas concentration limit values and airflow state data of a monitored area, receiving the poisonous gas concentration value and the poisonous gas type sent by the poisonous gas monitoring device as well as the humidity value, the temperature value, the air direction and the air speed value sent by the weather detection device, and obtaining the diffusion tread of the poisonous gas in the monitored area according to the SLAB heavy gas dispersion model; the display part is used for receiving the poisonous gas diffusion trend sent by a sending module and displaying the poisonous gas diffusion trend; the alarm part is used for receiving alarm signals sent by the sending module and giving an early alarm. The cloud analysis system can be used as an effective anti-terrorist emergency management tool, and is not only stable and safe, but also capable of efficiently integrating various types of detection data and analyzing the diffusion trend, so that workers can conveniently make dealing schemes in time.

The invention discloses a preparation method of a hydrocarbon hydrogenation catalyst. The method comprises the following steps: adding a mixture of group VIII metal cation modified molecular sieves and organic amines as well as organic alcohols and / or organic acids before or in the process of preparing an alumina-group VIB metal oxide composite oxide by a coprecipitation method; carrying out aging after gel forming is completed and then obtaining a catalyst intermediate through filtration, washing and drying; then carrying out forming, drying and roasting, thus obtaining the hydrogenation catalyst. The catalyst prepared by the method can organically combine the molecular sieves and alumina together with good combination degree and dispersion degree, thereby avoiding agglomeration and even blockage of the molecular sieves and amorphous alumina, simultaneously controlling the distribution of hydrogenation components on various acidic components effectively and improving the usability of the catalyst; and the catalyst is especially suitable for the hydrocarbon hydro-upgrading process with moderate requirements for acidity and the hydrogenation function.

The invention discloses a process for synthesizing a glimepiride raw material medicine. A compound A, namely 3-ethyl-4-methyl-3-pyrroline-2-ketone and a compound B, namely 2-phenethyl isocyanate are taken as start raw materials. The process is characterized in that when an intermediate 1 is synthesized, filtrate is applied mechanically, so that the loss of the intermediate 1 can be reduced, the yield can be increased, and the production efficiency can be improved; when an intermediate 2 is synthesized, hydrochloric ether is adopted as a solvent, so that isomer impurities can be greatly reduced, the content of the isomer impurities can be reduced to 0.5% or less from 8%, and later purification procedures can be simple to operate; when a glimepiride metallic salt is synthesized, acetonitrileis adopted as a solvent, sufficient reactions can be achieved, the reaction time can be greatly shortened, the residue of an intermediate 3 is reduced to 0.2% or less from 5-10%, in addition, a highsolvent recycling rate can be achieved. The process disclosed by the invention is simple and safe, low in production cost, high in yield, stable in intermediate and finished product quality and applicable to industrial large-scale production and hypoglycemic drug, namely glimepiride, synthesis processes with relatively great social, economic and environmental-friendly benefits.

The invention discloses a preparation method of low-molecular-weight ammonium polyacrylate with viscosity average molecular weight of (0.3-1.0)*10<4>, and belongs to the field of polymer synthesis. The method is realized by adopting an aqueous solution polymerization method, and comprises the steps of: based on an alcohol solvent as a heat transfer solvent and a chain transfer agent as well as ammonium persulfate as an initiator, continuously dropwise adding a mixture of ammonium acrylate solution and the initiator, carrying out a polymerization reaction under reflux at the temperature of 80-90 DEG C, and synthesizing low-molecular-weight ammonium polyacrylate with viscosity average molecular weight of (0.3-1.0)*10<4> through adjusting the use amount of isopropanol and ammonium persulfate. Low-molecular-weight ammonium polyacrylate synthesized by the method has good water solubility, and is suitable for being used as a polymer dispersing agent, a scale and corrosion inhibitor, a water reducer and the like.

The invention discloses a diaphragm containing a graphene / cellulose composite material, and a preparation method thereof. The diaphragm comprises a diaphragm base layer, a graphene / cellulose compositematerial layer on the surface, facing a positive electrode, of the diaphragm base layer, and another graphene / cellulose composite material layer on the surface, facing a negative electrode, of the diaphragm base layer, wherein the graphene / cellulose composite material layers comprise graphene, cellulose and other auxiliary agents. In use, the diaphragm containing the graphene / cellulose compositematerial has the characteristics of low thickness, high imbibition rate and low resistance, and enables a lithium ion battery to have high capacity and long service life; and the graphene component ofthe diaphragm can effectively form a heat transmission network and diffuse heat in time when the phenomenon of local overheating occurs, so the heat resistance of the diaphragm is improved, and the safety performance of the battery is improved. The preparation method for the diaphragm is simple in process, mild in reaction conditions, short in production cycle, and capable of realizing large-scale industrial production.

The invention discloses a method for optimizing the crystallization of potassium chloride based on an online monitoring system, and belongs to the field of potassium chloride production. A static technology is adopted to detect solubility data and supersolubility data of potassium chloride, the focused beam reflectance measurer (FBRM) and online particle size analyzer (PVM) monitoring system to detect the metastable zone of potassium chloride crystallization, the solubility of the potassium chloride gradually increases with the increase of the temperature, increase of the cooling rate widens the width of the metastable zone of potassium chloride, increase of the stirring speed narrows the width of the metastable zone of potassium chloride, and reduction of the addition amount of seed crystals narrows the width of the metastable zone of potassium chloride. The problem that existing optimization of the crystallization process of potassium chloride tends to focus on the influences of supersaturation, impurities and other ions on the crystal habits of potassium chloride crystal, but does not achieve a good crystallization optimization effect and spontaneous nucleation and secondary nucleation still exist is solved in the invention.

The invention provides an array eddy current probe capable of actively removing electromagnetic coupling between adjacent coils, and mainly overcomes two defects that an existing array eddy current probe adopts a shielding cover to passively shield electromagnetic coupling: 1, a channel for detecting joule heat of coils in a cover and external convective heat transfer is blocked, coil temperaturerise is easily caused, and temperature drift errors are caused; and 2, the probe size is increased, and the probe spatial resolution is reduced. According to the technical scheme, two auxiliary coilscoaxial with detection coils are arranged outside the detection coils of the probe, and a magnetic field generated by the auxiliary coils weakens an external magnetic field generated by the detectioncoils, so that magnetic field interference of adjacent detection coils is reduced. The auxiliary coils are each provided with a metal slip sheet, the length and the number of turns of the auxiliary coils connected to a loading circuit can be changed by moving a slip sheet, the weakening degree of the external magnetic field is further adjusted, and different requirements of different application scenes for the electromagnetic decoupling degree of the adjacent coils are met. Compared with an existing array eddy current probe, the probe provided by the invention is smaller in size and smaller intemperature drift error.

The invention relates to a plasma sterilization device, a preparation method of sterilization gas and a sterilization method. The plasma sterilization device comprises a gliding arc discharge reactor, a gas flow circulating device and a sealed cavity. The gas flow circulating device comprises a gas inlet end, a gas outlet end and a fan; the gas inlet end and the gas outlet end respectively communicate with the sealed cavity, and the gas flow circulating device hermetically communicates with the sealed cavity through the gas inlet end and the gas outlet end; the gliding arc discharge reactor comprises a power supply and two electrodes; the power supply is connected with the electrodes; the gas outlet end is an insulating high-temperature-resistant pipe or is connected with an insulating high-temperature-resistant pipe, and the electrodes are arranged in the insulating high-temperature-resistant pipe; and plasma sliding arcs are blown out from the electrode area under the action of the gas flow circulating device. The plasma sterilization device is simple in structure; gas in the space circularly flows in the insulating high-temperature-resistant pipe and forms sliding arc discharge for multiple times, so that the sterilization activity and timeliness of plasma gas in the sealed space are improved; and the plasma sterilization device has transient stability and is a green, environment-friendly and residue-free sterilization method.

The invention discloses a treatment process for degrading printing and dyeing wastewater through photocatalysis. An adopted photocatalyst is a bismuth nanocluster-bismuth nanoparticle / TiO2 / graphene composite photocatalyst. According to the catalyst, oxidized graphene is firstly prepared, then TiO2 with photocatalytic activity is loaded on a slice layer of the oxidized graphene, a bismuth nanocluster is modified onto a graphene slice layer of TiO2, and photo-reduction is carried out. The composite photocatalyst has high catalytic degradation activity aiming at the printing and dyeing wastewater. The treatment process provided by the invention solves the problem of low degrading efficiency of the printing and dyeing wastewater in the prior art, and is applicable to degrading organic dyes inthe printing and dyeing wastewater.

The present invention relates to a photovoltaic connection box and a photovoltaic assembly connection system. The photovoltaic connection box comprises a box body and an anode connection end, a cathode connection end and four assembly connection ends arranged at the exterior of the box body and a bypass diode module or a smart power management module arranged at the interior of the box body. The photovoltaic connection box and the photovoltaic assembly connection system avoid the problem that the assembly is failed in the generation usage process caused by unstable bonding between a connection box and the photovoltaic assembly, avoid the problem that the connection box itself is damaged after the heat generated after a hot spot effect bypass diode works cannot be radiated because one part of the photovoltaic module or the whole photovoltaic module is shielded once in the assembly work process, prevent the heat in the connection box from influencing the assembly backboard and the glass, and can perform optimization of the assembly generation power.

The invention discloses a high-breathability non-woven fabric for medical protective clothing. The high-breathability non-woven fabric for the medical protective clothing comprises the following raw materials in parts by weight: 40-55 parts of acrylic fibers, 22-34 parts of polyacrylonitrile fibers, 8.5-13 parts of cellulose ester fibers, 18-27 parts of elastic fibers, 4-8 parts of viscose fibers,6-12 parts of an additive and 1-3 parts of chrysotile. The high-breathability non-woven fabric for the medical protective clothing has excellent breathability.

The electric spark equipment for colloidal silver solution is formed from high-frequency pulse generator, discharge gap automatic regulator, plastic tube and plastic impeller pump. The high-frequencypulse generator is connected with positive silver electrode and negative silver electrode by means of wires, the silver electrode holder is connected with positive silver electrode and machine seat, and the stepper motor is respectively connected with discharge gap automatic regulator and machine seat by means of ball screw. Said invention is simple in structure, convenient in operation and low in cost.

The invention belongs to the technical field of experiment equipment and particularly discloses a biological safety cabinet. The biological safety cabinet comprises a cabinet body internally providedwith an operation room; a waste treatment pipeline is arranged in the cabinet body, and a discharging opening and a feeding opening are respectively formed in the two ends of the waste treatment pipeline; a second separation plate is fixedly connected with the middle of the waste treatment pipeline; a third separation plate is also arranged in the waste treatment pipeline. The biological safety cabinet further comprises a first power mechanism capable of driving the third separation plate to vertically move. The biological safety cabinet disclosed by the invention not only can be convenient for an experimenter to timely discard wastes, but also can timely kill cells or other toxic and harmful substances on the wastes.

The invention discloses a preparation method of a hydrogenation catalyst composition containing molecular sieves and amorphous silica-alumina. The method comprises the following steps: adding a mixture of the molecular sieves and organic amines before or in the process of preparing an amorphous silica-alumina-hydrogenation active metal oxide composite oxide by a coprecipitation method; carrying out aging after gel forming is completed and then carrying out hydrothermal treatment, filtration, washing and drying; then forming, drying and roasting, thus obtaining the hydrogenation catalyst composition. A catalyst prepared by the method can organically combine the molecular sieves and amorphous silica-alumina together with good combination degree and dispersion degree, thereby avoiding agglomeration and even blockage of the molecular sieves and amorphous silica-alumina, simultaneously controlling the distribution of hydrogenation components on various acidic components effectively and improving the usability of the catalyst. The hydrogenation catalyst composition prepared by the method is especially suitable for hydrogenation catalysts with relatively high requirements for acidity and relatively low requirements for hydrogenation properties.

The invention discloses an LED (light-emitting diode) lamp with a radiating function, comprising a lamp cap, a housing, a driving circuit, a vertical-face lamp holder and an LED light source, wherein the vertical-face lamp holder is a hunched geometry table body, an installation seat is formed on the surface of the geometry table body, the LED light source is fixed on the installation seat and is connected with the driving circuit which is installed in the lamp cap, a radiating part is formed below the vertical-face lamp holder and is provided with a plurality of fins, hollow shapes are formed among the fins, the bottom of the radiating part is fixed on the lamp holder, the housing covers the top of the radiating part, and the vertical-face lamp holder and the LED light source are arranged in the housing. Due to the structure, the three-dimensional heat exchange with air from inside to outside can be realized, heat generated during the working of the LED light source and the driving circuit can be diffused outwards timely, the radiating area is increased by more than 1.5 times compared with a traditional radiating way, and the radiating effect is good, so that the service life of the LED lamp can be prevented from being influenced by an overhigh temperature.

The invention discloses a management method for preventing and treating grape downy mildew. According to the management method, novel microorganism organic fertilizers are applied, plasmopara viticola can be killed by virtue of antagonism of microorganisms, meanwhile multiple assistant measures are taken to treat both symptoms and root causes, and thus fruit trees suffering from diseases can be thoroughly cured. The management method disclosed by the invention is capable of reducing the amounts of chemical fertilizers and pesticides, plays an active role in protecting and utilizing soil and ambient agricultural environments, is capable of reducing the planting cost and increasing the economic benefits and the social benefits, and has wide application prospects.

The invention discloses a preparation method of a hydrogenation catalyst. The method comprises the following steps: adding a mixture of molecular sieves containing hydrogenation active metal components and organic amines as well as organic alcohols and / or organic acids in the amorphous alumina gel forming process; carrying out aging after amorphous alumina gel forming is completed and then carrying out filtration, washing and drying; then carrying out forming, drying and roasting, thus obtaining the hydrogenation catalyst. By adopting the method, the molecular sieves and alumina can be organically combined together with good combination degree and dispersion degree, agglomeration and even blockage of the molecular sieves and amorphous alumina can be avoided, and meanwhile, the hydrogenation and cracking functions of the catalyst can be effectively adjusted and the usability of the catalyst can be improved. The catalyst prepared by the method is suitable for the shallow cracking and deep hydrogenation processes.

The present invention relates to preparation of 2, 6-dimethyl naphthalene, and is especially beta-methyl naphthalene transalkylating process of preparing 2, 6-dimethyl naphthalene. The beta-methyl naphthalene transalkylating process of preparing 2, 6-dimethyl naphthalene includes compounding mixture with beta-methyl naphthalene, transalkylating agent and solvent in the molar ratio of 1 to 1-2 to 0.5-8; and transalkylating reaction in catalyst bed layer at reaction temperature 350-550 deg.c, supercritical reaction pressure 3.1-12.0 MPa and space velocity 0.1-3 / hr to synthesize 2, 6-dimethyl naphthalene. The preparation process of the present invention has short production period, long catalyst service life and low production cost.

The invention provides an electronic device and aims to solve the technical problem that the prior alloy entity dissipates heat of a functional component at low speed, achieve heat transmission by cooling fluid and higher heat dissipating speed. The electronic device comprises a housing and a functional component disposed within space of the housing; the housing comprises a cooling pipe connected with the functional component; the cooling pipe is filled with cooling fluid; the cooling fluid circularly lows in the heating pipe; when the functional component operates and produces heat, the cooling pipe and the cooling fluid transfer the heat.

The invention provides a high-flame-retardant cable sheath. A preparation method of the high-flame-retardant cable sheath comprises the following steps: (1), activating a mixture of graphite and graphene; (2), mixing all raw materials in parts by weight as follows: 40 to 48 parts of polyvinyl chloride, 20 to 24 parts of butadiene styrene rubber, 7 to 10 parts of the mixture of the activated graphite and graphene, 10 to 13 parts of an inorganic flame retardant, 5 to 10 parts of a packing material, and 1 to 3 parts of a plasticizer; (3), putting the materials into an internal mixer, refining, and then performing blending extrusion through a double-screw extruder, so as to obtain the high-flame-retardant cable sheath. The method adopts the graphite and graphene which are activated as advanceas heat conduction materials and are matched with proper flame retardant materials and soft flexible materials, an obtained cable is good in flame retardance, high in thermal conduction capacity and elongation at break, light in weight, small in size, and wide in application range.

The invention discloses a battery cooling device for a new energy vehicle and belongs to the technical field of power supply cooling. The battery cooling device comprises fastening blocks and bearingblocks for limiting a heat-conducting pipe, and a rectangular frame seat for fixing power supplies in groups, wherein each fastening block is an overall part formed by a pair of clamping plates and acover plate; each bearing block is an overall part formed by a rectangular block and two pairs of bearing feet; a C-shaped notch is formed in each rectangular block and each clamping plate separately;a plurality of fastening blocks and a plurality of bearing blocks are alternately matched in a gap between two rows of partition plates in sequence to form an open limiting channel; the heat-conducting pipe is arranged in the open limiting channel and provided with a row of positioning rings, wherein the heat-conducting pipe is matched into the C-shaped notches; one rectangular block or pair of clamping plates is matched between two adjacent positioning rings; criss-crossed bearing plates are arranged in the rectangular frame seat; and two rows of partition plates which are opposite two by two are arranged on the surface of each bearing plate. According to the battery cooling device, the power supplies of the vehicle are arranged in the rectangular frame seat in groups and a cooling pipeis arranged on the frame seat to cool the power supplies.