33results about How to "Achieve physical separation" patented technology

The invention discloses a method for refining bismuth from bismuth oxide slags. The bismuth oxide slags and reduction agents are subjected to reduction smelting, liquation decoppering, primary lead removal through chlorine, vacuum distillation for silver removal, secondary lead removal through chlorine, high-temperature refining for dechloridation, and caustic soda flakes adding for tellurium removal, and finally refined bismuth is obtained. Alloy containing silver, copper, bismuth, lead and the like directly enters the decoppering procedure, wet pretreatment is omitted, the decoppering procedure is simplified, copper matte and silver-zinc crusts are prevented from being generated, the usage amount of nitric acid in a wet section is reduced, emission of nitric oxide in the nitric acid dissolving process is reduced, and pollution to the environment is reduced; after a zinc adding and silver removal technique is changed into the vacuum distillation for physical silver removal technique, the silver-zinc crusts which are difficult to treat are eradicated, physical separation of silver and bismuth is achieved to the maximum extent, and the recovery rate of silver is increased; and the usage amount of coal gas and auxiliary materials is reduced, the labor intensity of workers is relieved, the production period of the refined bismuth is shortened, the production cost of the refined bismuth is reduced, and the direct recovery rate and the recovery rate of the refined bismuth are increased.

The invention relates to a recovery method of a flexible solar assembly. The method comprises the steps including cryogenic separation, coating material separation and coating material gathering successively. According to the method, a chip of the solar assembly is separated from other layers in the cryogenic method, the problem that a coating material on the recovery chip is hard to separate from materials of the other layers or is hard to recover after separation in the prior art is solved, and the high-value material in the flexible solar assembly can be recovered at low cost; The recovery method is simple in steps, low in operation difficulty, low in comprehensive cost, high in recovery efficiency, friendly to the environment and wide in application prospects.

The invention discloses an Internet online voting system. The system includes: a terminal set which includes a voting terminal, an auditing terminal and a management terminal, the voting terminal being used for network voting voters who input a correct user password to elect and vote, and the user password being used for verifying identities of the network voting voters; an access router; a voting subsystem which includes a first server and a second server; a firewall subsystem which includes a firewall router and a firewall server; a database server used for storing election data; an identity authentication server used for storing registration information; and a third server and a fourth server, an isolation gatekeeper being arranged between the fourth server and the third server and used for ferrying data information that needs to be transmitted between the third server and the fourth server. The Internet online voting system solves the technical problem in related technologies that user experience is relatively poor when a user uses an Internet online voting system.

The invention discloses a rhizosphere soil sampling device, comprising a square box, where two mesh dividing pieces seamlessly connected with the box are symmetrically arranged in the cavity of the box, so as to divide the cavity into left, middle and right chambers, the two mesh dividing pieces are parallel with the centre line of the box, at least a mesh insert piece is arranged in each of the left and right chambers, the mesh insert piece seamlessly adheres to the adjacent mesh dividing piece, and the mesh insert pieces in the left and right chambers are symmetrical to the center line of the box, the mesh diameters of the mesh dividing pieces and mesh insert pieces are all 25 microns. And the sampling device can implement sampling of rhizosphere soils at different mm levels.

The invention provides a carbon-iron-titanium-silicon-aluminum oxide compound and a preparation method and application thereof. The preparation method of the carbon-iron-titanium-silicon-aluminum oxide compound comprises the following steps that water is added into red mud, and a first slurry is obtained through grinding; acid is added into the first slurry to adjust the pH value to be 2 to 4, surface dispersant is added, alkaline matter is added to adjust the pH value to be 5 to 10 during the grinding process, and a second slurry is obtained; solid-liquid separation is conducted on the second slurry, calcination is conducted on a solid, and a coated iron-titanium-silicon-aluminum oxide is obtained; reduction is conducted on the coated iron-titanium-silicon-aluminum oxide in a reducing gas atmosphere, carbon fiber generation is conducted in a hydrocarbon atmosphere, cooling is conducted, and the carbon-iron-titanium-silicon-aluminum oxide compound is obtained. According to the carbon-iron-titanium-silicon-aluminum oxide compound and the preparation method and application thereof, high-value utilization of the red mud can be achieved, and extremely high industrial application potential is achieved.

The invention relates to the field of potassium salt extraction from solid ores, particularly a method for producing KCl from ground surface carnallite, which comprises the following steps: 1) mixing ground surface carnallite with a high-Mg<2+> brine solution, and stirring to obtain a slurry; 2) sending the prepared slurry into a spiral particle grader to perform primary desliming; sending the coarse material subjected to particle gradation into a hydroclone to perform two-stage swirl desliming, and carrying out vacuum separation on the cyclone underflow, wherein the solid sample is deslimed carnallite; 3) carrying out cold decomposition on the deslimed carnallite for 20-30 minutes; and 4) adding a decomposition mother solution obtained by cold decomposition into the deslimed subjected to cold decomposition, adding a floatation agent, and carrying out two-refinement one-scavenging floatation to obtain KCl double-refined concentrate. The technique does not need any salt field solution mining or evaporation process, thereby saving the salt field construction cost and fresh water resources and greatly shortening the whole production process and production cycle for producing KCl from high-clay carnallite. Meanwhile, the method directly implements ore / clay physical separation, and generates the KCl product with the grade of at least 95%.

The invention relates to the technical field of an electric short-circuit protection device, in particular to a multifunctional fireproof short-circuit protector with a redundant device. The multifunctional fireproof short-circuit protector comprises a switch power supply, a current sampling device, a digital signal processor, a large-current power module, an isolation driving module, a redundant device, a charge absorption circuit and a load; the redundant device is a controlled mechanical switch, and an end L of an alternating-current power 220V is respectively connected with a resistor R1, the input end of the switch power supply, the input end of a differential amplifier and one end of the current sampling device. The multifunctional fireproof short-circuit protector is used in different alternating-current strong current fields such as household power, industrial power and the like, when the load is short-circuited, the abnormal power supply circuit is disconnected instantaneously at a microsecond speed, and no dangerous spark is produced on the short-circuit position; when the abnormal situation such as electric leakage happens in an electrical loop, the electric-leakage circuit is also disconnected at a high speed by the device; through the redundant device, even when the extreme situation that the large-power current module or the digital signal processor is abnormal occurs, the reliability of the device also can be guaranteed.

The invention discloses an intelligent leakage current monitoring sensing device and a leakage current monitoring system. The intelligent leakage current monitoring sensing device comprises a leakage current collecting assembly, a CPU processor, a self power supply and a wireless communication assembly. The leakage current collecting assembly and the wireless communication assembly used for wireless communication are in signal connection with the CPU processor, the self power supply is electrically connected with the leakage current collecting assembly, and the CPU processor is electrically connected with the wireless communication assembly. By means of the intelligent leakage current monitoring sensing device, collected data can be sent to a box change monitoring assembly in a wireless mode to be used for on-line monitoring of an overvoltage protector or a lightning arrester. The leakage current monitoring system comprises a host and the intelligent leakage current monitoring sensing device. The intelligent leakage current monitoring sensing device comprises the CPU processor and the wireless communication assembly which is in signal connection with the CPU processor. The wireless communication assembly is in wireless connection with the host. The intelligent leakage current monitoring sensing device and the box change monitoring assembly are in wireless communication, so that physical separation between primary equipment and secondary equipment is achieved, and thus system operation security is improved.

The invention relates to an image transfer arrangement (1) for the wireless transfer of image information items between a transmitter (4) and a receiver (8), wherein at least two communication channels (11) which are physically independent of one another are formed between the transmitter (4) and the receiver (8) and enable impairment and interference-free communication.

The invention discloses a mixed excitation flux switching motor having a stator with a claw pole bypass structure. The stator, a rotor and an air gap which are coaxially arranged are arranged on a motor; the stator is composed of a plurality of U-shaped stator iron cores equidistantly arranged at intervals along the circumference, a permanent magnet embedded between the adjacent U-shaped stator iron core teeth, an armature winding wound on the adjacent U-shaped stator iron core teeth, a claw pole bypass component and an excitation coil; the claw pole bypass component is composed of a primary iron core ring connected with U-shaped stator iron core magnet yokes with different magnetic polarities through the claw pole, a secondary iron core ring and a shielding iron core ring for connecting the primary iron core ring and the secondary iron core, the primary iron core ring, the secondary iron core and the shielding iron core ring form an annular cavity structure in a surrounding way; the excitation coil is placed in the annular cavity; and the rotor is composed of a rotor iron core and a rotor salient pole. The flux switching motor main body structure cannot be changed, the motor has reliable structure and can conveniently regulate the air gap magnetic field by placing the excitation coil through the claw pole bypass structure, and is suitable for the wide-speed regulation application occasion.

The invention relates to the technical field of ships, in particular to a double-steering-gear single-cable-channel ship, which comprises a steering gear cabin, wherein a cable channel is connected to one end of the steering gear cabin, and a stern cabin is connected to the other end of the cable channel; a first cable and a second cable are arranged in the cable channel, and the left and right ends of each cable are arranged in the steering gear cabin and the stern cabin respectively; the periphery of the second cable is sleeved with a fireproof sleeve. According to the double-steering-gear single-cable-channel ship, the second cable with the fireproof sleeve is arranged, and can be physically separated from the first cable, so that power can be normally supplied by the other cable when one cable is on fire, at least one steering gear is further enabled to be available in an emergency state, and an accident caused by unavailability of steering gears is avoided.

The invention discloses a device for monitoring soluble organic matters in a water body through fluorescence spectrometry and a detection method. The device comprises a stock solution supply assembly,a stock solution separation assembly, a sample collection, detection and dilution assembly, a cleaning and purging assembly and a system control assembly. According to the device disclosed by the invention, physical separation of soluble organic matters in a complex water body according to the volume of the soluble organic matters is realized through organic combination of a micro-filtration membrane, an ultra-filtration membrane and a nano-filtration membrane assembly on a monitoring site, and through measurement of fluorescence spectra of separated solutions, fluorescence spectrum characteristic information is extracted and a recognition comparison database is established; and the device effectively reduces and eliminates information loss caused by fluorescence spectrum overlapping in the mixed water body or covering of weak fluorescence signals by strong fluorescence signals, greatly improves possible result misjudgment of direct water body detection in the prior art, and providesricher, more accurate and finer spectrum identification comparison information for online water quality monitoring, early warning and tracing.

The invention discloses an intelligent sports testing and information acquisition system based on NFC identification for a senior high school entrance exam, which belongs to the technical field of teaching information processing systems, and solves the problems of safety and operation convenience of information processing. The main points of the technical scheme are that the system comprises an NFC tag, NFC terminal equipment and a WEB server, and the system is characterized in that the WEB server is used for obtaining an NFC database and examination subject information on an academic office website, the NFC database stores a unique identification code of each NFC label, the NFC labels are used by students and record student identity information and student examination score data, and the NFC terminal equipment is used by teachers and is provided with a front-end module and a rear-end module. The effects that identity secondary confirmation is carried out through fingerprint identification, and the working reliability and safety are improved are achieved.

The invention discloses a temperature and humidity standard box calibration device based on WIFI communication. The temperature and humidity standard box calibration device comprises a box, a data collecting card, a sensor interface circuit, a temperature and humidity sensor, a WIFI transmitter, a power module, an upper computer and a software module; the data collecting card and the WIFI transmitter are mounted on the left side of a cavity of the box; and the WIFI transmitter, the data collecting card and the upper computer are wirelessly connected. The data collecting card, the sensor interface circuit, the temperature and humidity sensor, the WIFI transmitter, the power module, the upper computer and the software module are arranged, detection personnel and detection equipment are physically separated, remote control is achieved, and the harm of noise during detection to human health is avoided; according to the temperature and humidity standard box calibration device, the detectionaccuracy is high, repeatability is good, and a method fully meets the requirements of the JJF1564-2016 'Temperature and Humidity Standard Box Calibration Specification'; and the human-computer interaction part graphical interface and touch control operation are achieved, the size is small, the weight is low, the temperature and humidity standard box calibration device can move freely within a certain range, and on-site calibration of a temperature and humidity standard box by workers is greatly facilitated.

The invention relates to a decoupling testing device for a centrifugal pump. A spiral casing of the centrifugal pump is arranged on a spiral casing support pedestal through a separation decoupling bracket, an impeller rotor is arranged on a motor shaft of a driving motor of the centrifugal pump, and the driving motor of the centrifugal pump is arranged on a motor support pedestal which is independent of the spiral casing support pedestal, so that the spiral casing is physically separated from a rotor of the driving motor to realize the vibration decoupling of fluid excitation, mechanical excitation and electromagnetic excitation; a dynamic pressure pulsation sensor and a vibration acceleration sensor are arranged on the spiral casing, an eddy current sensor is arranged at the impeller rotor, a wireless stress-strain sensor is arranged on a blade, vibration acceleration sensors are arranged at bearings and legs of the motor, are connected with an acquisition and data analysis device, and are used for acquiring vibration transmission characteristics of a fluid excitation source to analyze quantitative characteristics of the fluid excitation source and realize the directional vibration and noise reduction design according to the quantitative characteristics of the fluid excitation source.

The invention discloses a method for separating sperms in mixed stains by using a porous material, and the method comprises the following steps: (1) pre-treatment of mixed stains: separating sperm cells and other cellular components from physical evidence by using a cell eluent to obtain a suspension; (2) combination of the sperms and the porous material: taking a porous material adsorption pieceand mixed liquid, pouring the mixed liquid on a porous material adsorption sheet, allowing the mixed liquid to enter the inside of the material from the upper surface of the porous material adsorptionsheet and then drip from the lower surface, discarding the dripped liquid, and retaining the porous material adsorption sheet; (3) removal of other cellular components on the surface of the porous material: washing the porous material adsorption sheet obtained in the step (2) with TES washing liquid to remove other cells and DNA thereof adhered on the porous material surface except sperms; and (4) digesting the porous material adsorption sheet obtained in the step (3) with a sperm digestive solution, so that the sperms adhered in the micropores of the porous material is eluted into the spermdigestive solution to obtain a sperm DNA solution.

The invention provides a log file automatic generation method based on model driving, and belongs to the field of combination of software system structure modeling and log file automatic generation. The method comprises: based on a software system structure modeling idea, coding functional components of all layers of an application program, and using an automatic mapping mode to replace log information containing internal definitions of an application system; and then intercepting user information corresponding to corresponding operation behaviors, generating log contents together with other necessary system description information, and storing the log contents in a log file or database file form. Meanwhile, collection work of the log information can be started or stopped at will by modifying the configuration file, and existing log information can be expanded or deleted according to real-time needs. Physical separation and logic independence of the log system and the application system are achieved, comprehensive, detailed and extensible log content is guaranteed, the application system can be maintained, and the follow-up data analysis work efficiency is improved.

The invention provides a carbon-iron titanium silicon-aluminum oxide composite and its preparation method and application. The preparation method of the carbon-iron titanium silicon-aluminum oxide composite includes the following steps: adding water to red mud, and grinding to obtain the third A slurry; add acid to the first slurry to adjust the pH value to 2-4, add a surface dispersant, add alkaline substances under grinding to adjust the pH value to 5-10, and obtain a second slurry; add the second slurry Solid-liquid separation is performed, and the solid is roasted to obtain a coated iron-titanium-silica-aluminum oxide; the coated iron-titanium-silica-aluminum oxide is reduced in a reducing gas atmosphere, and then carbon fibers are generated in a hydrocarbon atmosphere and cooled. Finally, the carbon-iron-titanium-silicon-aluminum oxide composite is obtained. The invention can realize high-value utilization of red mud and has strong industrial application potential.

The invention discloses a method for refining bismuth from bismuth oxide slags. The bismuth oxide slags and reduction agents are subjected to reduction smelting, liquation decoppering, primary lead removal through chlorine, vacuum distillation for silver removal, secondary lead removal through chlorine, high-temperature refining for dechloridation, and caustic soda flakes adding for tellurium removal, and finally refined bismuth is obtained. Alloy containing silver, copper, bismuth, lead and the like directly enters the decoppering procedure, wet pretreatment is omitted, the decoppering procedure is simplified, copper matte and silver-zinc crusts are prevented from being generated, the usage amount of nitric acid in a wet section is reduced, emission of nitric oxide in the nitric acid dissolving process is reduced, and pollution to the environment is reduced; after a zinc adding and silver removal technique is changed into the vacuum distillation for physical silver removal technique, the silver-zinc crusts which are difficult to treat are eradicated, physical separation of silver and bismuth is achieved to the maximum extent, and the recovery rate of silver is increased; and the usage amount of coal gas and auxiliary materials is reduced, the labor intensity of workers is relieved, the production period of the refined bismuth is shortened, the production cost of the refined bismuth is reduced, and the direct recovery rate and the recovery rate of the refined bismuth are increased.

The invention relates to the technical field of an electric short-circuit protection device, in particular to a multifunctional fireproof short-circuit protector with a redundant device. The multifunctional fireproof short-circuit protector comprises a switch power supply, a current sampling device, a digital signal processor, a large-current power module, an isolation driving module, a redundant device, a charge absorption circuit and a load; the redundant device is a controlled mechanical switch, and an end L of an alternating-current power 220V is respectively connected with a resistor R1, the input end of the switch power supply, the input end of a differential amplifier and one end of the current sampling device. The multifunctional fireproof short-circuit protector is used in different alternating-current strong current fields such as household power, industrial power and the like, when the load is short-circuited, the abnormal power supply circuit is disconnected instantaneously at a microsecond speed, and no dangerous spark is produced on the short-circuit position; when the abnormal situation such as electric leakage happens in an electrical loop, the electric-leakage circuit is also disconnected at a high speed by the device; through the redundant device, even when the extreme situation that the large-power current module or the digital signal processor is abnormal occurs, the reliability of the device also can be guaranteed.

The invention discloses a mixed excitation flux switching motor having a stator with a claw pole bypass structure. The stator, a rotor and an air gap which are coaxially arranged are arranged on a motor; the stator is composed of a plurality of U-shaped stator iron cores equidistantly arranged at intervals along the circumference, a permanent magnet embedded between the adjacent U-shaped stator iron core teeth, an armature winding wound on the adjacent U-shaped stator iron core teeth, a claw pole bypass component and an excitation coil; the claw pole bypass component is composed of a primary iron core ring connected with U-shaped stator iron core magnet yokes with different magnetic polarities through the claw pole, a secondary iron core ring and a shielding iron core ring for connecting the primary iron core ring and the secondary iron core, the primary iron core ring, the secondary iron core and the shielding iron core ring form an annular cavity structure in a surrounding way; the excitation coil is placed in the annular cavity; and the rotor is composed of a rotor iron core and a rotor salient pole. The flux switching motor main body structure cannot be changed, the motor has reliable structure and can conveniently regulate the air gap magnetic field by placing the excitation coil through the claw pole bypass structure, and is suitable for the wide-speed regulation application occasion.

The invention relates to the technical field of nozzle removal processing of die-casting power boxes, in particular to a nozzle removal processing device for die-casting power boxes, including a bearing platform, a drainage mechanism, a rotating mechanism, a fixing mechanism, a grinding mechanism, a filtering mechanism, a safety mechanism and an auxiliary box, the drainage mechanism is arranged obliquely on the top of the bearing platform, the rotating mechanism is arranged in the bearing platform along the length direction of the bearing platform, and the fixing mechanism includes a plurality of fixing mechanisms, each of which is arranged above the bearing platform in sequence And it is located on the top of the rotating mechanism, the grinding mechanism is fixedly arranged on one side of the bearing platform and the grinding mechanism cooperates with the fixing mechanism, the safety mechanism is arranged on the top of the grinding mechanism, and the filter component is fixedly arranged on the bearing platform On the other side, the auxiliary box is arranged on the outer wall at one end of the carrying platform. Through the operation of the above components, a cleaning processing device capable of batch processing the nozzles of the die-casting power box and a high safety factor is realized.

The invention discloses a method for separating sperm in mixed plaques using porous materials: (1) pretreatment of mixed plaques: using cell eluent to separate sperm cells and other cell components from physical evidence to obtain a suspension; ( 2) Combination of sperm and porous material: take the porous material adsorption piece and the mixed solution, pour the mixed solution on the porous material adsorption sheet, the mixed solution enters the material from the upper surface of the porous material adsorption sheet and then drips from the lower surface, after dripping (3) Removal of other cell components on the surface of the porous material: the porous material adsorption sheet obtained in step (2) is washed with TES washing solution to remove other substances other than sperm attached to the surface of the porous material. Cells and their DNA; (4) Digesting the porous material adsorption sheet obtained in step (3) with sperm digestion solution, so that the sperm attached to the micropores of the porous material are eluted into the sperm digestion solution to obtain a sperm DNA solution.

The invention relates to the technical field of nozzle removal processing of die-cast power supply boxes, in particular to a nozzle removal processing device of a die-cast power supply box. The devicecomprises a bearing platform, a drainage mechanism, a rotating mechanism, fixing mechanisms, a grinding mechanism, a filtering mechanism, a safety mechanism and an auxiliary box, wherein the drainagemechanism is arranged obliquely at the top of the bearing platform, the rotating mechanism is arranged in the bearing platform in the length direction of the bearing platform, the fixing mechanisms are arranged above the bearing platform in sequence and located at the top of the rotating mechanism, the grinding mechanism is fixedly arranged on one side of the bearing platform, the grinding mechanism is matched with the fixing mechanisms, the safety mechanism is arranged at the top of the grinding mechanism, the filtering mechanism is fixedly arranged on the other side of the bearing platform,and the auxiliary box is arranged on the outer wall of one end of the bearing platform. Through the operation of the mechanisms, the removal processing device achieves batch processing of nozzles ofdie-cast power supply boxes and a high safety factor.

The invention relates to a recovery method of a flexible solar assembly. The method comprises the steps including cryogenic separation, coating material separation and coating material gathering successively. According to the method, a chip of the solar assembly is separated from other layers in the cryogenic method, the problem that a coating material on the recovery chip is hard to separate from materials of the other layers or is hard to recover after separation in the prior art is solved, and the high-value material in the flexible solar assembly can be recovered at low cost; The recovery method is simple in steps, low in operation difficulty, low in comprehensive cost, high in recovery efficiency, friendly to the environment and wide in application prospects.

The invention discloses an opening type integration small-size rubidium spectral lamp used for small-size rubidium atom frequency scale. The opening type integration small-size rubidium spectral lamp includes a bulb and a lamp head, the lamp head is internally provided with a coil skeleton mounting through hole, the inner end of the coil skeleton mounting through hole is provided with a cone-shaped clamping seat, the coil skeleton mounting through hole is internally provided with a coil skeleton, the external wall of the coil skeleton is fitted with the inner wall of the coil skeleton mounting through hole, the inner wall of the coil skeleton is provided with an inner thread, the inner thread on the inner wall of the coil skeleton is provided with an oscillator coil in an embedded mode, the tail of the bulk is formed in the cone-shaped clamping seat, the oscillator coil is electrically connected with an incentive PCB plate, the bulk is fixed on a thermal insulation gasket sheet, the external end of the coil skeleton mounting through hole is provided with a sapphire glass sheet, and the lamp head is provided with a heating pipe and a temperature-sensing element. According to the opening type integration small-size rubidium spectral lamp, the design requirements of small volume, low operating temperature and high reliability can be met, and the opening type integration small-size rubidium spectral lamp has the advantages of simple debugging, good process consistency and convenient batch production, and can be used in large and medium batch production of small-size rubidium frequency scale.

The invention relates to a test decoupling device for realizing the physical separation of excitation characteristics of a centrifugal fan. The volute is fixedly connected with a separation decoupling bracket 2 through a connecting disk, the separation decoupling bracket 2 is fixed on the support base of the decoupling system, and the impeller is directly installed. On the motor shaft of the driving motor, the machine feet of the driving motor are installed on the supporting base of the driving system. The supporting base 1 of the decoupling system and the supporting base of the driving system are independent of each other to realize the physical separation between the volute and the rotor of the motor. Acceleration sensors are arranged at the foot of the machine, which are used to measure the shaft frequency and harmonic frequency of the shaft system composed of the motor rotor and impeller, and the electromagnetic excitation frequency of the motor; acceleration sensors and dynamic The pressure sensor is used to measure the blade frequency and its harmonic frequency and the fan broadband air flow excitation, and the acceleration sensor and the dynamic pressure sensor are respectively connected to the data analysis device.

The invention relates to the technical field of charging facility heat dissipation equipment, and particularly provides high-power liquid cooling super fast charging equipment, which comprises a shell, a control box, an alternating current charging device and a cooling device, the shell is in a vertical cabinet type, a vertical partition plate is arranged in the shell, and the interior of the shell is divided into a first containing cavity and a second containing cavity by the vertical partition plate; the control box is fixed on the shell, and the control box is used for controlling the alternating current charging device to carry out rapid charging and controlling the cooling device to carry out cooling on the alternating current charging device; the alternating current charging device is installed in the first containing cavity and used for charging an electric automobile. And the cooling device is installed in the second accommodating cavity, and the cooling device adopts a liquid cooling mode to carry out heat dissipation on the alternating current charging device. According to the invention, the heat dissipation capability is improved by adopting a liquid cooling mode so as to adapt to the high-heating-value heat dissipation requirement of the high-power fast charging equipment, electrical isolation prevention is realized through the vertical partition plate, and the safety of the equipment is improved.