41results about How to "Reduced installation area" patented technology

The invention discloses an ice melting and storing device outside a spiral coil pipe, and belongs to the technical field of ice melting devices. Comprising a cylindrical ice storage tank, a water inlet header pipe is arranged on the upper portion, a water outlet header pipe is arranged on the lower portion, the water inlet header pipe is connected with a water distributor, and the water outlet header pipe is connected with a water collector; the spiral heat exchange coil pipe is arranged in the cylindrical ice storage tank; the air blowing assembly is arranged at the bottom of the cylindrical ice storage tank, and the air blowing assembly is used for blowing air flow into the cylindrical ice storage tank; the water collector and the air blowing assembly are two concentric annular channels and are integrally arranged at the bottom of the cylindrical ice storage tank, a plurality of first communicating holes are formed in the water collector, and a plurality of second communicating holes are formed in the air blowing assembly. By means of the device, return water with the high temperature is discharged into the cylindrical ice storage tank again, meanwhile, air flow is blown into the cylindrical ice storage tank through the air blowing assembly, water flow in the cylindrical ice storage tank is disturbed, and melting of ice bodies is promoted.

The invention relates to an integrated device and method for in-situ mineralization of rainwater through a bioretention facility. The integrated device comprises a bioretention device body, and the bioretention device body is composed of a super high-rise building, a water storage layer, a covering layer, a filler layer and a drainage layer from top to bottom. The invention further provides a method for in-situ mineralization of rainwater through the integrated device, and the method comprises the steps that the rainwater flows into the super high-rise building through the road surface confluence and flows into the water storage layer from the super high-rise building, and the rainwater passing through the water storage layer infiltrates into the covering layer; the rainwater infiltrated through the covering layer enters the filler layer; rainwater mineralized by the filler layer infiltrates into the drainage layer, the water volume in the drainage layer is gradually increased and the water storage liquid level is gradually increased along with the convergence of the rainwater, and when the water storage liquid level of the drainage layer exceeds the height of the upper edge of the perforated drainage pipe, the rainwater flows into the perforated drainage pipe through the nylon net, so that in-situ mineralization and collection of the rainwater are realized. According to the invention, the problems of scattered layout, large occupied space, complex operation and the like of the existing sectional mineralization treatment technology are solved.

The invention relates to a power module and a power device, the power module is arranged on the power device, the power device comprises a first substrate, the first substrate is provided with a power bonding pad, and the power module comprises a plastic package body; the lining plate is arranged on the plastic package body, the lining plate comprises a first surface and a second surface which are oppositely arranged, and the second surface of the lining plate extends towards the top of the plastic package body; the chip is arranged on the first surface of the lining plate; the first end of the metal column is connected with the first surface of the lining plate, the second end of the metal column extends towards the bottom of the plastic package body to form an exposed part, and the exposed part is in compression joint with the power bonding pad. The top space of the plastic package body is not shielded, the heating amount of the chip can be conducted to the second surface of the lining plate from the first surface of the lining plate, and the heating amount of the element of the first substrate can be conducted to the second surface of the lining plate through the metal columns, so that rapid heat dissipation is realized, and the long-term operation reliability of the power module is ensured.

The invention relates to the technical field of compressed air energy storage, and discloses a cross-seasonal heat storage compressed air heat and power cogeneration system and an operation method thereof. The compressed air heat and power cogeneration system comprises a compression subsystem and an expansion subsystem. A compression assembly in the compression subsystem generates compressed air, the compressed air is cooled through a heat exchange assembly, a cross-season heat storage device exchanges heat with the compressed air in a heat exchanger to extract and store heat energy, and the cooled compressed air is stored in a compressed air storage device. The expansion subsystem firstly heats compressed air of the compressed air storage device through a heat exchanger and then conveys the compressed air to an expansion assembly for power generation. In the non-heating season, the cross-seasonal heat storage device can store heat energy and supply the heat energy to the heat supply assembly in the heating season, cross-seasonal utilization of the heat energy is achieved, the heat energy utilization efficiency is high, the heat energy is continuously generated and consumed when the system operates, and the cross-seasonal heat storage device, the compression assembly and the heat supply assembly share the heat exchanger; the occupied area of equipment and the cost are reduced.

The present application relates to the technical fields of plunger pump, and discloses a single-cylinder double-outlet plunger pump, which comprises a shell, a cylinder, a swash plate, a main shaft and an oil distribution plate arranged in the shell, the cylinder is installed on the main shaft and is driven to rotate by the main shaft, a plurality of plunger cavities are uniformly distributed on one end of the cylinder along the circumference, a plurality of crescent grooves arranged in an inner-outer double-layer mode are formed on the other end of the cylinder, the crescent grooves in the inner layer are communicated with a part of the plunger cavities, and the crescent grooves in the outer layer are communicated with another part of the plunger cavities.The single-cylinder double-outlet plunger pump adopts a double-pump single-cylinder structure, the overall volume is significantly reduced, the structure is extremely compact, and the single-cylinder double-outlet plunger pump is very suitable for occasions with limited installation space, and the double-path output can simultaneously drive two independent systems (such as steering and braking circuits), effectively simplifies the pipeline layout, reduces the installation area, and simplifies the system design.

The invention belongs to the related technical field of methanol hydrogen engines, and discloses a methanol and cracked gas integrated multi-injection system which comprises a methanol engine assembly, a methanol fuel tank, a methanol cracker, a methanol high-pressure pipeline, a methanol low-pressure pipeline and a methanol cracked gas pipeline, the methanol engine assembly comprises a methanol hydrogen ejector; one end of the methanol high-pressure pipeline is connected with a first outlet of the methanol fuel tank, and the other end is connected with an inlet I of the methanol hydrogen ejector; one end of the methanol low-pressure pipeline is connected with a second outlet of the methanol fuel tank, and the other end is connected with an inlet of the methanol cracker; one end of the methanol cracking gas pipeline is connected with an outlet of the methanol cracker, and the other end is connected with an inlet II of the alcohol-hydrogen ejector. Accurate control over the amount of cracked gas entering a cylinder is achieved, the injection amount is adjusted according to parameter changes of mixed gas in the cylinder, simultaneous or independent injection of methyl alcohol and cracked gas of the methyl alcohol is achieved through the alcohol-hydrogen injector, and different fuel control modes can be adopted according to different working conditions.

The utility model relates to the technical field of magnet distributing, in particular to a multi-magnet distributing device suitable for a pressure maintaining machine, which comprises an operating table arranged on a mounting column, a plurality of air cylinder mounting plates are arranged on the surface of the operating table, and distributing air cylinders are arranged on the surfaces of the air cylinder mounting plates. Magnet material bins of different specifications are arranged above the material distributing air cylinder through a supporting plate, a push-pull limiting plate is arranged on one side of each magnet material bin, and a material taking plate is arranged at the driving end of the material distributing air cylinder. The multi-magnet distributing device suitable for the pressure maintaining machine adapts to feeding of magnets of different models through the magnet bins of different specifications, the universality of the device is improved, meanwhile, an operator can conveniently place corresponding magnets into the matched magnet bins, the situation that the magnets are placed mistakenly during manual placement is effectively avoided, and the working efficiency is improved. And each magnet bin and each material distribution air cylinder can be flexibly detached and replaced, so that an operator can conveniently select the number of material distribution stations according to actual conditions.

The invention discloses a high-stability cooling pump for a motor, and belongs to the technical field of water pumps. A locking sleeve tightly arranged on a water pump shaft in a sleeving mode is additionally arranged on a drainage impeller, and a plurality of pressing bent pipes distributed with impeller blades in a staggered mode are annularly distributed on the locking sleeve; the inner end of the pressing bent pipe is not arranged in a protruding mode, flexible sleeving between the drainage impeller and the water pump shaft is not affected, when the pump body is in a working state, part of cooling liquid guided into the drainage impeller is guided into a water passing cavity formed in the end of the water pump shaft, and the cooling liquid is guided into the pressing bent pipe at a high speed through the drainage hole under the action of centrifugal force; the cooling liquid presses the piston to move towards the inner side of the pressing bent pipe, the filler is extruded to one end of the elastic sleeve, the bottom end of the elastic sleeve extrudes towards one side of the pressing cavity along with the filler, and therefore high-stability insertion connection between the pressing bent pipe and the water pump shaft during centrifugal work is achieved, and it is effectively guaranteed that the drainage impeller is not prone to being disengaged from the water pump shaft under high-speed rotation.

An electronic device (100) applied to an electric motor includes a wiring substrate (101), an electric connection wiring (150) disposed at a substantially center of the wiring substrate and connected to a power source, a plurality of motor connection wirings (114-116) disposed at a periphery side of the wiring substrate compared to the electric connection wiring and connected to the electric motor, and a plurality of semiconductor modules (120) each including a plurality of semiconductor elements (123b, 124b) and a resin mold (125) integrally sealing the plurality of semiconductor elements. The plurality of semiconductor modules are disposed on the electric connection wiring or at a position at the periphery side of the wiring substrate compared to the electric connection wiring and at a center side of the wiring substrate compared to the motor connection wirings, and electrodes of at least a part of the plurality of semiconductor modules are mounted on the electric connection wiring.

The invention provides a variable runner air cooling battery module cooling method based on a PID (Proportion Integration Differentiation) control strategy. The method comprises the following steps: acquiring temperature signals of all parts of a battery module through a plurality of temperature sensors and transmitting the temperature signals to a battery management system; when the battery management system calculates that delta Tmax is larger than delta TL-delta, delta Tmax is the maximum value of the temperature difference of the battery module, delta TL is a temperature difference threshold value, and the error is delta, it is judged that the temperature difference of all parts of the battery module exceeds a preset temperature difference threshold value, the position of the highest temperature Tmax of the battery module is obtained, and the position of the highest temperature Tmax of the battery module is obtained; and the control valve corresponding to the position where the highest temperature Tmax is located is controlled to be opened, and the control valves at the other air outlets are controlled to be closed, so that the runner mode is switched. The battery module can be cooled more comprehensively in multiple directions, more air can flow through the local overheating part of the battery module, heat dissipation of the local overheating part is better facilitated, and the risk that a battery is overheated is avoided.

The present invention discloses a potting method for a cleaning equipment circuit board, comprising: applying glue to the bottom surface of the cleaning equipment circuit board and leaving it to stand for a first preset curing time; turning over the cleaning equipment circuit board and placing the cleaning equipment circuit board in a mold that matches its shape; applying glue to the top surface of the cleaning equipment circuit board in the mold and leaving it to stand for a second preset curing time; and removing the mold. The potting method for the cleaning equipment circuit board of the present invention implements miniaturization of the cleaning equipment circuit board by respectively performing glue potting and sealing on the bottom surface and the top surface of the cleaning equipment circuit board so that the cleaning equipment circuit board is coated with glue on both sides; and after potting is completed, the corresponding mold is removed, and the cleaning equipment circuit board can be installed separately on the cleaning equipment without the mold in the prior art being installed together, thereby reducing the occupied space and weight, thereby meeting the requirements of high integration, small size, and lightness of the cleaning equipment.

The present invention discloses a smoke supply and exhaust duct structure of a smoke prevention and exhaust system and an installation method thereof. Through the L-shaped structural design of a rear panel and a front panel, pressure plate parts are arranged at both side ends of the front panel, and the pressure plate parts at both side ends of the front panel are respectively contacted with two inner side surfaces of the rear panel to form a smoke guide channel. A side vertical sealing gasket is arranged between the pressure plate part and the inner side surface of the rear panel, which can effectively prevent smoke from escaping from the smoke guide channel. The pressure plate part and the rear panel are fixedly connected to the shear wall by bolts. The rear panel adopts an L-shaped structure, which can ensure that the rear panel and the shear wall are fitted together, reducing the use area of ​​the building space, thereby reducing the cost. The pressure plate part of the front panel and the rear panel are fixedly connected to the shear wall by bolts, and there is no need to set up a pipeline circumferential clamp and a fixed bracket, which reduces the use area of ​​the outer side of the smoke supply and exhaust duct and can improve the installation strength of the smoke supply and exhaust duct. The structure is simple and easy to install.

The utility model discloses a miniature trigger switch and fuse head structure, which is applied to the field of fuse signal control and comprises a circuit board, a first electrode and a second electrode. The first electrode is conductively connected with a first electrode connecting part in the circuit board, and the second electrode is conductively connected with a second electrode connecting part in the circuit board; the second electrode is arranged on the side, close to the fuse head shell, of the first electrode, and an insulation isolation structure is arranged between the first electrode and the second electrode; the second electrode at least shields part of the first surface of the first electrode and at most shields part of the surface, close to the fuse head shell, of the circuit board, so that when the fuse head shell collides with a target, the second electrode is extruded to make contact with the first electrode; and the first surface is the surface of the first electrode close to the fuse head shell. According to the utility model, the second electrode at least shields part of the first surface of the first electrode and at most shields part of the surface, close to the fuse head shell, of the circuit board, so that adverse effects on receiving and transmitting of radio waves can be avoided.

The utility model provides a wireless networking communication device, and belongs to the field of wireless communication facilities. The wireless networking communication device comprises an installation box, one side wall of the installation box is an installation wall used for being installed on equipment, a bearing plate is arranged in the installation box, a signal processing module and a power module are arranged on the bearing plate, the bearing plate comprises a main control board card and a power board card, the signal processing module is located on the main control board card, and the power module is located on the power board card. The power supply module is located on the power supply board card, the power supply board card is installed on the side wall of the non-installation wall of the installation box, and the main control board card and the power supply board card are installed on different walls of the installation box. According to the wireless networking communication device, the power supply module is arranged on the independent power supply board card, so that the sizes of the single power supply board card and the main control board card are reduced, the area occupied by the wireless networking communication device during installation is reduced, and meanwhile, the power supply board card is installed on the side wall of the non-installation wall of the installation box, so that the heat dissipation of the power supply board card is also facilitated.

A method for producing crystals of bis-2-hydroxyethyl terephthalate of the present invention includes performing a step of, with use of a crystallizer (10) that performs a crystallization operation of an aqueous solution including 20% to 30% by weight of BHET and a vacuum apparatus (32) that depressurizes the inside of the crystallizer (10), obtaining a slurry (13) including crystals of BHET in the crystallizer (10) by adiabatically cooling the aqueous solution by evaporating water which is a solvent of the aqueous solution; and a step of obtaining the crystals of BHET and a mother liquid by supplying the slurry (13) discharged from the crystallizer (10) to a solid-liquid separator (20).

An electrical connector device belongs to the technical field of battery energy source. It comprises a shell and a shell cover, and further comprises a pair of power terminals, a signal terminal and an explosion-proof valve. The pair of power terminals are symmetrically arranged at the middle positions of the shell cavity. The explosion-proof valve and the signal terminal correspond to the middle positions of the pair of power terminals and are separately arranged at the upper and lower parts of the pair of power terminals. The shell is formed with a gas permeable hole at the middle of the bottom side wall. The power terminals, the signal terminal and the explosion-proof valve are arranged through the shell cavity. An insulating plate covering the explosion-proof valve is arranged at the upper position in the shell cavity. The shell is provided with a signal wire clamping groove on the top side wall corresponding to the signal terminal, and power wire positioning grooves are formed at the left and right sides of the signal wire clamping groove. The signal wire is connected with the signal terminal and is led out of the shell through the signal wire clamping groove. Advantage: The modular structure design solves the problems of layout confusion, complex installation and safety hazards in the prior art.

The present application provides a component replacement system and a component replacement device capable of reducing the area of a system in the manufacture of a semiconductor device. A component replacement system that performs replacement of a consumable component includes a component storage device and a component replacement device. The component storage device stores a consumable component before use. The component replacement device is connected to a processing device and the component storage device, and is capable of replacing a consumable component after use installed in the processing device with a consumable component before use stored in the component storage device. Furthermore, the component replacement device is capable of moving to a position of the processing device in which a consumable component to be replaced is installed, and connecting to the processing device. Furthermore, the component storage device is capable of moving to a position of the component replacement device connected to the processing device in which a consumable component to be replaced is installed, and connecting to the component replacement device.

An in-line dumpling molding system is disclosed. The in-line dumpling molding system according to the present invention comprises: a dumpling wrapper cutting device, which cuts a supplied dough sheet to form dumpling wrappers; a dumpling-molding lower folding device, which is disposed below the dumpling wrapper cutting device, on which the cut dumpling wrappers are loaded, and which presses and folds the dumpling wrappers onto which dumpling fillings have been supplied; and a sealing device, which is disposed above the dumpling-molding lower folding device, and presses and seals the folded dumpling wrappers.

The invention discloses a display panel and a display device, the display panel is provided with a first display area, and the display panel comprises a substrate; the plurality of isolation structures define an isolation opening, and the adjacent isolation structures are arranged at intervals in the first display area; the light-emitting layer is at least partially arranged in the isolation opening; the first electrode layer is located on the side, away from the substrate, of the light-emitting layer, the first electrode layer comprises a plurality of first electrodes, the first electrodes are located in the isolation openings, and at least in the first display area, open grooves are formed in the positions, corresponding to the positions between the adjacent first electrodes, of the first electrode layer. The arrangement area of the first electrode layer can be reduced by arranging the open groove, and the transmittance of the display panel is improved.

The invention provides a wireless electric energy transmission system for rotating shaft equipment, and belongs to the technical field of wireless electric energy transmission. The wireless power transmission system for the rotating shaft equipment comprises a magnetic circuit coupler; an energy transmitting coil; a transmitting end high-frequency resonance circuit; a transmitting terminal start-stop control circuit; mounting a bracket; a magnetic circuit coupling array; and an energy receiving coil and a receiving end high-frequency rectification and power conversion circuit. The magnetic circuit coupler guides a high-frequency magnetic field generated by the energy transmitting coil to the magnetic circuit coupling array, the magnetic circuit coupling array receives the high-frequency magnetic field and enables magnetic flux to penetrate through the energy receiving coil, and the two ends of the energy receiving coil are connected with a receiving end high-frequency rectification and power conversion circuit which is used for conducting rectification, voltage stabilization and power conversion on alternating current generated by the energy receiving coil. The wireless electric energy transmission system is non-contact, high in safety and high in reliability, has good adaptability to possible mechanical vibration of the rotating shaft, and can replace a traditional electric brush slip ring power supply mode.

Provided is a bending vibration plate speaker system having higher performance that satisfies both hearing-impaired and normal-hearing people and having high quality. The speaker unit (10) of the present invention comprises at least a first vibration plate (1) formed into a cone shape, a second vibration plate (2) in a curved sheet shape, and a driver unit (3) that drives the first vibration plate and the second vibration plate together. The small diameter side (1a) of the first vibration plate and one end side (2a) of the second vibration plate are connected to the driver unit. When the speaker unit is installed in a housing (50) and used as a speaker (100), the large diameter side (1b) of the first vibration plate is connected to a support plate (511) of a support member (51) constituting a part of the housing, and the other end side (2b) of the second vibration plate is connected to a leg (513) of a support member constituting a part of the housing.

The invention provides a vehicle-mounted pickup mechanism and device for wireless charging, and is used for solving the technical problems that an existing vehicle-mounted wireless charging pickup end is loose in structure and poor in heat dissipation effect. The vehicle-mounted picking mechanism comprises a picking box with an opening in the upper end, and a power assembly is installed in the picking box. A winding cooling groove is further formed in the bottom end face of the pickup box, the section of the cooling groove is in a T shape, a cooling sealing plate is installed on the upper portion of the T-shaped groove of the cooling groove, an installation via hole penetrating through an inner cavity and the bottom end face of the pickup box is formed in the bottom end face of the pickup box, a coil binding post is arranged in the installation via hole, and the coil assembly and the power assembly are connected through the coil binding post. According to the vehicle-mounted pickup mechanism, the installation area of the vehicle-mounted pickup mechanism is reduced through the modular design of the power assembly, the structure is compact, meanwhile, the heat dissipation effect of the vehicle-mounted pickup mechanism is improved through the arrangement of the reversely-arranged winding cooling groove, meanwhile, the reversely-arranged cooling groove avoids the influence on a power circuit when cooling liquid leaks, and the stability of the device is improved.

An electric curtain linear guide rail device comprises a device body, the device body comprises a movable module and a static module, the movable module is movably matched on the static module, the movable module comprises a magnetic coupling soft iron core, a magnetic coupling iron core isolation layer and a microcontroller, and the output end of the microcontroller is connected with the input end of the magnetic coupling soft iron core; the static module comprises a static iron core and a multi-tap coil, the static iron core comprises a thick iron core and a thin iron core, and the multi-tap coil is wound on the thin iron core. When the device is used, a power supply is switched on to electrify each multi-tap coil, under the coupling action of the electrified multi-tap coils, the moving end control device main body and the moving module synchronously perform linear motion from left to right (or from right to left), and the motion speed is controlled by the step-by-step frequency of the microcontroller. The coupling force is controlled by the coil power-on current and the coil turn number, and the curtain is synchronously driven to move left and right under the condition that the movable module moves left and right, so that the purpose of automatically closing or opening the curtain is achieved.

The utility model relates to the field of automobile parts, and discloses an efficient rectifying device. Comprising a housing, the housing is arranged on a generator shell, a generator rotating shaft and a stator assembly are arranged in the generator shell, and the housing is communicated with an air inlet pipe; a rectifier body is mounted in the housing, a carbon brush box is arranged on the rectifier body, and the carbon brush box is rotationally and electrically connected with a rotating shaft of the generator; a plurality of heat dissipation through holes are formed in the rectifier body and correspond to the air inlet pipes; a heat dissipation assembly is arranged on the rectifier body; a bridge bracket is pressed on the rectifier body, and an insert is arranged on the bridge bracket; the rectifier body is provided with a power assembly, and the power assembly is electrically connected with the stator assembly, the insert and the rectifier body. According to the utility model, the heat dissipation assembly and the power assembly are arranged, the heat dissipation assembly can efficiently dissipate heat, the power assembly is the Mosfet, and the Mosfet is low in power consumption, low in heat productivity and high in rectification power, so that the temperature in the housing is not too high, and the rectification efficiency is improved.

The utility model relates to a kind of dual-frequency GPS antenna device of intelligent wristwatch, including the middle frame made of insulating material, metal watch ring and mainboard.LDS antenna main body electrically connected with mainboard is set on the middle frame, for forming GPS L1 resonance;Metal watch ring is electrically connected with mainboard and forms GPS L5 resonance by tuning circuit.The both as parasitic unit mutually coupled, jointly realize GPS L1+L5 dual-frequency function.The structure omits independent GPS L5 antenna, reduces installation area, and is applicable to small size wristwatch.

A power supply device for gate drive supplies a direct-current power source to a plurality of gate drive circuits provided for a power conversion device. The power conversion device includes a step-up / down converter and one or more ac-dc conversion circuits. The step-up / down converter includes a step-up / down upper arm switching element and a step-up / down lower arm switching element. The ac-dc conversion circuit includes an ac-dc upper arm switching element and an ac-dc lower arm switching element. The power supply device for gate drive includes a power supply unit that supplies a direct-current power source to at least two of the step-up / down upper arm switching element, the step-up / down lower arm switching element, the ac-dc upper arm switching element, and the ac-dc lower arm switching element in common.

The invention discloses an integrated fishway monitoring device with directly-embedded partition plates in a muddy water state, and belongs to the field of fishway monitoring. The integrated fishway monitoring device comprises a fishway body and a first monitoring mechanism, and a first partition plate and a second partition plate are arranged on the two inner walls of the fishway body respectively; a first fish guide grid and a second fish guide grid are connected between the first partition plate and the second partition plate, a gap between the first fish guide grid and the second fish guide grid forms a fish passing channel, a first mounting groove is formed in the first partition plate, the first monitoring mechanism comprises a monitoring box, a camera shooting assembly and a cover plate, and a containing cavity is formed in the monitoring box; the open end of the containing cavity faces the fish passing channel, the camera shooting assembly is installed in the containing cavity, and the cover plate is transparent and connected to the open end of the containing cavity in a sealed mode. According to the device, the first monitoring mechanism is installed in the first installation groove of the first partition plate in an embedded mode, hydraulic characteristics of the fishway are not changed, the influence on fish upstream is small, the installation area of the device is small, and the installation cost is low.

A solar cell includes a silicon substrate, a first passivation film, and a second passivation film. The silicon substrate includes a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface. The first passivation film is located on the first surface and completely covers the first surface. The second passivation film is located on the second surface and partially covers the second surface. The second passivation film extends from the periphery of the silicon substrate to the center of the silicon substrate to form an irregular ring. The passivation film is deposited on the first surface of the silicon substrate and is plated on the edge area of the second surface in a winding manner, and the problems of color difference of the back surface appearance, blackening of the EL edge and the like during preparation of the battery can be well solved by subsequently superposing the anti-reflection film on the second surface; meanwhile, the passivation film deposited on the second surface passivates defects such as holes and over etching on the edge of the second surface, so that the performance of the battery is improved. The utility model also provides a photovoltaic module comprising the solar cell.

The invention provides a water flow window cooling and heating control energy-saving system which comprises a water flow window unit, a heat pump unit, a control unit and a cold and heat source supply and output unit in the field of water flow window application, and the cold and heat source supply and output unit is used for supplying water to the heat pump unit. The heat pump unit communicates with a water path of the water flow window unit through the first water pump, the third water pump is arranged in the heat pump, and the heat pump unit outputs water flow meeting the preset temperature to the water flow window unit. When the energy-saving system is a closed system, the energy-saving system further comprises a heat exchange unit and a second water pump, the system can intelligently adjust the operation state according to indoor and outdoor environments and personnel demand conditions, cold / heat is supplied for indoor radiation, and the number of indoor cooling and heating loads is reduced; meanwhile, unnecessary high-grade energy consumption is reduced, indoor load capacity and quality coordinated regulation and control are achieved, and the building energy efficiency level is effectively improved; the control method is accurate.

The utility model provides a rotatable lifting structure, which belongs to the technical field of lifting equipment and comprises a supporting leg pipe, a bearing seat, a bearing sleeve and a connecting support. External threads are arranged on the upper portion of the supporting leg pipe in the circumferential direction, the bearing seat sleeves the upper portion of the supporting leg pipe and is in threaded connection with the supporting leg pipe, a bearing body is installed in the bearing seat, the bearing sleeve sleeves the lower portion of the supporting leg pipe and is in sliding fit with the supporting leg pipe in the axial direction, and the upper end of the bearing sleeve penetrates into the bearing seat and is connected with the bearing body. The connecting support is connected to the lower end of the bearing sleeve. According to the rotatable lifting structure, extra supports needed in the prior art are removed, the number of accessories of the rotatable lifting structure is reduced, the installation area of the rotatable lifting structure is greatly reduced, the requirement of installation of the rotatable lifting structure for the environment is lowered, and the installation space is saved.