44results about How to "Increase the use volume" patented technology

The invention provides a fish tank bottom filter filtering system. According to the scheme, overflow plates or overflow columns are not arranged, the water level of a fish tank can be freely adjusted, even if the fish tank is not managed by people for a long time, the phenomena that water circulation is suspended due to dropping of the water level of the fish tank, a water pump is burnt out, and water quality is deteriorated to cause dropping of aquatic life energy and death of aquatic lives can be avoided. In addition, according to the scheme, the water level of a bottom filter tank is stable, a protein separator and other cultivation equipment are convenient to manage, and a large number of workloads of feeders are reduced. Through a designed round gasket 19 and a designed annular gasket 20, the problem of the poor closing effect caused by aging and abrasion of gaskets can be well solved, in a power failure state, due to the fact that a water pump 10 can not convey water of the bottom filter tank 16 into a fish tank 1, the problems that the water level of the fish tank can drop and the water level of the bottom filter tank rises and then water overflows due to the poor closing effect are solved. A valve 17 can discharge water from a main water inlet pipe, water in the fish tank can be conveniently and quickly emptied in necessary, in addition, sand, residues, animal skeletons and other solid-state garbage deposited in the main water inlet pipe can be completely cleaned. A tapered piston 6, a perforated plate 7 and a floating ball 9 are combined to control a water switch of a pressure chamber water outlet pipe 26, and compared with a lever type float valve, the fish tank bottom filter filtering system is firmer and more durable. In addition, the perforated plate 7 can be conveniently demounted, then, solid-state matter accumulated inside the fish tank can be conveniently cleaned, and blockage can be avoided.

The invention discloses an orbit shuttling load transferring trolley used for a stereoscopic warehouse, and the trolley can be used for solving the problem that the walking laneway of the traditional stereoscopic warehouse occupies the use volume of the warehouse. The orbit shuttling load transferring trolley is characterized in that a trolley walking driving shaft (2) and a driving wheel (16) are arranged on a trolley frame (1), a pair of driving eccentric bearing blocks (9) and a pair of driving eccentric sleeves (10) are arranged at the front end of the trolley frame (1), a pair of liftingbearing blocks (14) and a lifting sleeve (15) are arranged at the rear end of the trolley frame (1), the eccentric hole of a driving eccentric sleeve (10) and the eccentric hole of a driven lifting chain wheel (26) are internally and movably provided with the trolley walking driving shaft (2) and the driving wheel (16), a driven bearing (25) and a driven wheel (17) are arranged at the eccentric position of the lifting sleeve (15), and a walking motor and a reducer (3) as well as a lifting motor and a reducer (11) are fixedly arranged on a trolley frame base plate (4). By adopting the orbit shuttling load transferring trolley disclosed by the invention, the use volume of the stereoscopic warehouse and the safety factor of goods access are improved.

The invention discloses a distribution valve of concrete pump, which comprises a valve body, swing arms, two end caps, a left rotational valve and right rotational valve. Wherein, the end caps are arranged at the two ends of valve body; the valve body is divided into left valve chamber and right valve chamber; the left and right rotational valves are individually arranged inside the left and right valve chambers; the parts of valve relative to the left and right valve chambers have inlets, material adsorption inlets and outlets; the left and right rotational valves are individually connected to the swing arms at the outer side of two ends of valve body via the rotational axle; and said left and right rotational valves are cylinder which have through holes to connect the inlet and material adsorption inlet or material adsorption inlet and outlet. The invention has better material adsorption property which can meet the demand of high pressure pump.

A refrigerator includes a cabinet shaping the appearance; a storage compartment located within the cabinet; a first door and a second door configured to open or close the door of the storage compartment and pivotably disposed at left and right sides of the cabinet; a pillar disposed to the first door in a pivotable manner of a side of the pillar and configured to block leakage of cold air between the first door and the second door; a pillar boss disposed in a protruding on the upper portion of the pillar; a guide recess configured to guide the pillar boss; and a rotator provided with the guide recess at a side thereof, the rotator being configured to rotate about a rotation axis inside.

The invention discloses a multi-fire-source fire extinguishing guided missile system based on an unmanned aerial vehicle. The system comprises an unmanned aerial vehicle system, a ground control station and a fire extinguishing bomb launching platform; the unmanned aerial vehicle system comprises the unmanned aerial vehicle, a thermal imaging and visual light camera device, an unmanned aerial vehicle main control module, a GPS positioning module and an image identifying module; the fire extinguishing bomb launching platform comprises a base, a bomb box, a bomb supply mechanism arranged in thebomb box, a launcher base, a support aiming mechanism vertically mounted on the launcher base, and a launching pipe mounted at the upper end of the support aiming mechanism; the bomb box and the launcher base are fixed on the base; an igniter is arranged in the launching pipe; a launching platform main control module is arranged in the base; a bomb supply control module is arranged in the bomb box; and a launcher control module is arranged in the launcher base. The system can effectively extinguish large-area forest fire caused by multiple fire sources.

The invention discloses an electronic oven which includes an oven body. The oven body is equipped with two groups of electrical heating tubes which are arranged upper and lower and a griddle which is arranged in a middle inner cavity. The back of the oven body is equipped with a back casing. The outer surface of the back casing is movably connected with a top wallboard component. The front face of the oven body is hinged with a transparent toughened glass gate in a way of turning downward. A panel which is arranged to be parallel with the toughened glass gate is fixed on the front face of the oven body. Black high temperature resistance oil is sprayed on the inner cavity wall of the oven body to further guarantee the baking temperature in the cavity. The baking condition of foods in the oven body can be clearly observed from the high temperature resistance transparent toughened glass gate. The whole structure is changed from the traditional square shape into the cylindrical shape. With liberal appearance, the actual using volume is increased. A movable top wallboard is added on the back casing. When the movable top wallboard component is folded to be fixed, the oven space is saved. When the movable top wallboard component is put down, the electric oven does not touch wall corners, which guarantees the using safety.

The invention discloses a high-efficient single drop micro-extraction device, which comprises a microinjector, an extractionflask and a mixer. Wherein, the needlepoint tail end of the microinjector is provided with a thickening part which can increase the contact area between liquid drop and the needlepoint; when the extracting agent is pushed out slowly from the microinjector, liquid drop with large volume is formed at the needlepoint to conduct single drop micro-extraction. If improving the extractionflask further, the invention also can be used in three-phase single drop micro-extraction. The invention has simple processing, convenient operation and high upgrading efficiency, which not only keeps the advantages of traditional single drop micro-extraction integrating separating, upgrading and sampling, but also increases the volume of liquid drop, improve the stability of liquid drop, and is convenient for being used with other analytical instruments, suitable for the separating and upgrading of the trace amount organic matter in environment, food, medicine, organism and other complex samples.

The invention belongs to the technical field of automobiles and discloses a flying car which comprises a car body, front wings, rear wings and propellers, and the car body comprises a car head compartment and a car tail compartment; the front wings are arranged on the two sides of the car head respectively and can be unfolded out of the car body or folded and stored in the car head compartment; the rear wings are arranged on the two sides of the car tail respectively and can be unfolded out of the car body or folded and stored in the car tail compartment; the propellers are respectively arranged at the wingtips of the front wings and the rear wings, can be accommodated in the car head compartment along with the front wings, and can be accommodated in the car tail compartment along with the rear wings; in the flying state, the propellers rotate to the first position to provide vertical lift force for the flying car, and the propellers rotate to the second position to provide horizontal power for the flying car. The flying car is compact in structure and large in available space of the car body, can be parked in a common parking space and normally run on a common road, and can vertically take off and land like a multi-rotor aircraft and fly at a high speed like a fixed-wing aircraft.

The invention relates to the technical field of refrigerators in electrical equipment, and more particularly relates to a door shelving type ice making device based on a household refrigerator platform. The ice making device comprises an ice making bracket, ice making grids and an ice storage box, wherein the ice making grids are arranged on the ice making bracket, and the ice storage box is arranged at the lower part of the ice making bracket. The ice making device further comprises a rotating direction changing mechanism which is arranged on the ice making bracket, wherein the rotating direction changing mechanism is connected with the ice making grids and is used for driving the ice making grids to be subjected to rotary ice stripping. The ice making device is mounted on a freezing door body of a refrigerator in a door shelving manner, so that the volume of the door body is utilized sufficiently; the ice making device is provided with the special rotating direction changing mechanism, so that rotary motion vertical to the door body is changed into rotary motion parallel to the door body through a bevel gear combination; the ice making device is provided with an overflow water tank which is specifically used for solving the problem that water is overflowed to the ice storage box caused by the fact that too much water is added into the ice making grids or the door body shakes when the door body is closed.

The invention relates to an electricity-saving economical double-layer civil-engineering novel refrigeration house which successively comprises an internal system, a totally-sealed waterproof moisture barrier system, a thermal insulation system and an external system from inside to outside. The thick reinforced concrete load bearing ground in the electricity-saving economical double-layer civil-engineering novel refrigeration house of the invention is of a thick reinforced concrete structure located on a cement mortar cushion layer outside a intact net-type totally-sealed waterproof moisture barrier outside an intact net-type thermal insulation layer in the ground, the thick reinforced concrete structure is provided with a plurality of heavy steel pipe columns which can regularly and stably bear all weight on the thick reinforced concrete structure, and the thickness of the thick reinforced concrete structure is matched with total weight borne by the electricity-saving economical double-layer civil-engineering novel refrigeration house. The heavy steel pipe column supported heavy H-shaped supporting reinforced concrete roof or ground in the electricity-saving economical double-layer civil-engineering novel refrigeration house of the invention is a one-layer roof support structure of the invention, has light weight and large load bearing strength, improves the height for installing cold storage rack pipes, improves utilization volume of the refrigeration house and lowers construction cost.

A bouncing mechanism of a car trunk comprises arch hinges, installation base boards and torsion rod springs. The left side and the right side inside the car trunk are respectively provided with one arch hinge, one installation base board and one torsion rod spring, and the two arc hinges, the two installation base boards and the two torsion rod springs are respectively arranged symmetrically and are identical in structure. One end of an arch arm of each arch hinge is hinged to the corresponding installation base board, each installation base board is installed on a lateral rail assembly, and the other end of each installation base board is hinged to a trunk cover. The inner end of each torsion rod spring is fixed to the corresponding installation base board and the outer end of each torsion rod spring is fixed to a clamping groove of a lateral rail inner board at the same side. Each arch arm is further hinged to a torsion spring connecting rod, the middle of each torsion rod spring is clamped with the corresponding torsion spring connecting rod, a fixing installation point at each inner end, a fixing point at the corresponding outer end and a clamping point of the middle of the corresponding torsion rod spring are not on the same line, and therefore it is guaranteed that a four-bar linkage mechanism is formed. According to the bouncing mechanism, the structure and the installation position of each torsion rod spring are changed and the torsion rod springs are arranged at the left side and the right side of the trunk instead of transversely penetrating through the trunk and then being fixed. The bouncing mechanism has the advantages of being simple and practical in structure, stable and reliable in performance, low in cost and weight and capable of being widely applied to a car trunk system with an arch hinge torsion rod spring mechanism.

The invention provides a packaging box for clothing transportation. The packaging box comprises a box body, a box cover is hinged to the left side of the box body through a fixing bolt, an extending cover is arranged inside the box cover, a left moving chamber and a right moving chamber are fixedly installed on the left side and the right side of the box cover correspondingly, a sliding rail is fixedly installed on the right side of the inner wall of the right moving chamber, and the right side of the extending cover is in sliding connection with the sliding rail; and the left side of the extending cover extends into the interior of the left moving chamber of the box cover, the left side and the right side of the box body are correspondingly provided with first storage grooves, and an extending box is arranged inside the first storage grooves. According to the packaging box for the clothing transportation, through the arrangement of the extending box in the first storage grooves, the size of the packaging box can be adjusted, a micro motor is controlled to drive a first screw rod to rotate, an adjusting rod is enabled to adjust the height of the extending box, so that the use volume of the packaging box can be expanded conveniently; and when the use volume of the packaging box becomes large, an inner limiting rotating shaft is enabled to be rotated by pushing a telescopic fixing key so as to extend the extending cover.

The invention relates to the technical field of graphene and discloses a graphene-based RFID (radio frequency identification) antenna. The graphene-based RFID antenna comprises the following raw materials: 100-150 parts of graphene, 20-40 parts of epoxy resin, 10-20 parts of alcohol, 10-20 parts of chain extender, 20-30 parts of gel, 30-50 parts of silver powder, 50-70 parts of printing ink and 110-130 parts of paper. The printing method of the graphene-based RFID antenna comprises the steps of putting 20-30 parts of gel and 20-40 parts of epoxy resin in a container, heating to 120 DEG C, performing stirring for 3h at a frequency of 50 revolutions per minute to prepare an insulation sealant, coating the surface of a crude graphene-based RFID antenna prepared in step 2 with the insulation sealant uniformly, putting the coated crude graphene-based RFID antenna in a ventilated place for natural drying, taking out the crude graphene-based RFID antenna after 24h to form the graphene-based RFID antenna. The graphene-based RFID antenna coated with the insulation sealant isolates oxygen; quick oxidation does not occur; a service life of the graphene-based RFID antenna is greatly prolonged;the worries of a user are removed; and the use of the user is facilitated.

The invention relates to a large-size half-coil-pipe jacket glass lining reaction vessel. The large-size half-coil-pipe jacket glass lining reaction vessel comprises a reaction vessel main body; a half coil pipe is arranged outside the reaction vessel main body; a machine frame is arranged on the top of the reaction vessel main body; a motor is arranged on the machine frame; the motor is connectedwith a slurry type mixer; the lower part of the slurry type mixer is arranged in the reaction vessel main body; a cooling pipe assembly is arranged on the reaction vessel body by the machine frame; the cooling pipe assembly is arranged in the reaction vessel body, and comprises a middle inlet pipe and an external sleeve pipe which are connected in a sealing manner; the internal lower part of theexternal sleeve pipe is provided with a connecting plate provided with holes; the middle inlet pipe is connected with the connecting plate provided with holes; and the upper side part of the externalsleeve pipe is provided with an outlet. The large-size half-coil-pipe jacket glass lining reaction vessel is large in size, is capable of realizing cooling temperature adjusting, and increasing working efficiency.

The invention discloses a vertical water treatment device which is characterized by comprising a cone frustum cylinder, a water inlet in the upper end of the cone frustum cylinder, a water outlet in the lower end of the cone frustum cylinder, and three filter layers arranged inside the cone frustum cylinder, wherein the three filter layers are connected with the side wall of the cone frustum cylinder and comprises a filter plate layer, a ceramic filter material layer and a fiber ball filter material layer which are arranged from the water inlet in sequence; a space between every two filter layers is a water storage space; the vertical section of the filter plate layer is linear; the vertical sections of the ceramic filter material layer and the fiber ball filter material layer are in an arc arrangement manner; and the filter plate layer comprises a concrete filter plate body and filter holes which are uniformly formed in the filter plate layer in parallel. The external intensity requirement of the product disclosed by the invention is met by virtue of the concrete filter plate body, and the filter holes can be effectively protected to be stable. Moreover, impurities in water can be effectively removed when ceramic filtering materials are manufactured by using fluorite powder and activated carbon.

The invention discloses a polarity reversal output-type inverter with power decoupling and a control method thereof. The main circuit topology of the inverter comprises a DC power supply, an input capacitor, a primary-side switch transistor, an isolation transformer, a cut-off diode, a filter capacitor, a polarity reversal inverter bridge, an output filter circuit, a power grid and a decoupling circuit. The control method comprises steps: a unit sinusoidal wave is acquired through a PLL from a power grid voltage sampling value, the maximum DC input power is acquired through an MPPT from inputvoltage and current sampling values, a voltage disturbance signal is acquired through a voltage loop from a decoupling capacitor voltage sampling value, five modulation wave signals are obtained through a current reference operation circuit and a modulation signal generating circuit, and finally, through a PWM control circuit and a logic circuit, a grid-connected inverter is controlled to work. Adecoupling circuit formed by a decoupling switch transistor, a decoupling diode and a decoupling capacitor is added to the primary side of the isolation transformer, secondary current ripples at the DC power supply input side are effectively eliminated, and grid connection is realized.

The invention relates to a fingerprint module and an electronic device provided with the fingerprint module. A fingerprint chip arranged on the substrate; the shell comprises a first surface and a second surface, wherein the shell is provided with a mounting groove, and the fingerprint chip is accommodated in the mounting groove, wherein the housing further includes a contact surface connecting the groove wall of the mounting groove with the second surface, the contact surface extending obliquely from the groove wall to the second surface in a direction away from the mounting groove; the fingerprint module further includes a first filler glue connected between the outer periphery of the fingerprint chip and the substrate, the first filler glue including an inclined extension from a side wall of the fingerprint chip to an abutment surface; the contact surface is abutted against the abutment surface of the first filler. A fingerprint module in which the housing abuts against the contactsurface of the first filler through the contact surface, thereby avoiding interference of the included angle between the groove wall and the second surface with the first filler, thereby eliminating the metal ring surrounding the fingerprint chip to reduce the manufacturing cost of the fingerprint module and effectively reducing the thickness of the fingerprint module.

The invention discloses an orbit shuttling load transferring trolley used for a stereoscopic warehouse, and the trolley can be used for solving the problem that the walking laneway of the traditional stereoscopic warehouse occupies the use volume of the warehouse. The orbit shuttling load transferring trolley is characterized in that a trolley walking driving shaft (2) and a driving wheel (16) are arranged on a trolley frame (1), a pair of driving eccentric bearing blocks (9) and a pair of driving eccentric sleeves (10) are arranged at the front end of the trolley frame (1), a pair of liftingbearing blocks (14) and a lifting sleeve (15) are arranged at the rear end of the trolley frame (1), the eccentric hole of a driving eccentric sleeve (10) and the eccentric hole of a driven lifting chain wheel (26) are internally and movably provided with the trolley walking driving shaft (2) and the driving wheel (16), a driven bearing (25) and a driven wheel (17) are arranged at the eccentric position of the lifting sleeve (15), and a walking motor and a reducer (3) as well as a lifting motor and a reducer (11) are fixedly arranged on a trolley frame base plate (4). By adopting the orbit shuttling load transferring trolley disclosed by the invention, the use volume of the stereoscopic warehouse and the safety factor of goods access are improved.

Provided is a sterile article placing device. At present, when an operation is carried out, the number of surgical instruments and objects is large, the surgical instruments and objects cannot be placed on a plane, nurses need to count for four times, and counting errors are easily caused. The device comprises: a disinfection and sterilization basket (1), a tray (2), an antenna frame (3), a Z-shaped support (4) and a clamping part (6), wherein a bottom of the Z-shaped support is in threaded connection with the clamping part, a top of the Z-shaped support is in threaded connection with a center of the antenna frame, the tray and the antenna frame are fixed in an inserted mode, the disinfection and sterilization basket is arranged on the tray, and an insertion column (10) at a top of each antenna of the antenna frame is inserted into a grid of the disinfection and sterilization basket. The device is used for placing sterile articles.

The invention relates to a refrigerator storage box assembly and a refrigerator. The refrigerator storage box assembly includes a refrigerator storage box and a slide rail assembly, and the slide rail assembly includes: only one first and second ball grooves extending along the longitudinal direction and respectively formed on the first and second vertical sides opposite to each other. a defined raceway; and a plurality of balls rollably spaced in the raceway in the longitudinal direction. The storage box assembly also includes a rail bracket and a base with a horizontal floor. The refrigerator storage box is placed on the horizontal bottom plate, the top surface of the movable part of each slide rail assembly is fixed on the lower surface of the horizontal bottom plate; the lower surface of the fixed rail of each slide rail assembly is installed on the top surface of the slide rail bracket. The base also has two snap-in devices extending upwards from the two longitudinal edges of the horizontal bottom plate, each snap-in device includes slots and stop partitions arranged at intervals, so that the corresponding side walls of the refrigerator storage box The outwardly extending rotating shaft and the stop ribs are clamped in the card slot and the stop partition respectively.

The invention discloses a string-type greening planting device comprising a planting support and planting units. A hollow flow director is arranged in each planting unit. A water outlet port and a downward flowing port are arranged on the flow director. A flow direction line penetrating through the flow director is arranged in the flow director. The upper end of the flow direction line is fixed on the planting support. The plurality of planting units are fixed on the flow direction lines through fixing structures, such that planting strings are formed. The tops of the flow direction lines are connected to an external water supply device. The planting unit comprises a planting pot. A hole is provided on the bottom of the planting pot. A planting tray is arranged in the planting pot. The planting tray divides the planting pot into a planting vessel and a water storage vessel. A water absorption strip is arranged in the planting tray. The upper half of the water absorption strip is positioned in the planting vessel, and the lower half of the water absorption strip is positioned in the water storage vessel. A separation layer with a hole is arranged between the water outlet port and the downward flowing port of the flow director. With the device provided by the invention, defects of prior arts can be ameliorated, water inlet and water storage structures are optimized, and device cost is saved.

The invention discloses tower type sewage purification equipment which is characterized by comprising a trapezoid table type shell, a water inlet in the upper end of the trapezoid table type shell, a water outlet in the lower end of the trapezoid table type shell, and three filtering layers arranged in the trapezoid table type shell, wherein the three filtering layers are connected with the side wall of the trapezoid table type shell, and a, comprise a filtering plate layer, a ceramic filtering material layer and a fiber ball filtering material layer which are arrayed in sequence from the water inlet; a space between every two filtering layers is a water storage space; the vertical section of the filtering plate layer is V-shaped; the vertical section of the ceramic filtering material layer is saw-toothed; the vertical section of the fiber ball filtering material layer is arc-shaped; the filtering plate layer comprises a concrete filtering plate body and filtering holes uniformly arrayed in the filtering plate layer side by side; and the fiber ball filtering material layer with polypropylene fibers and polyacrylonitrile fibers which serve as main components can effectively remove suspensions from water.

The invention provides an electric oven. The electric oven comprises a shell component, a supporting surface for placing food as well as a heating element, wherein, the shell component is equipped with a door component which can be opened and closed from the front and / or rear side; the door component, the supporting surface and the shell component jointly form an arc heating chamber; the arc heating chamber comprises a cylinder, a circular truncated cone, a spherical table, an arc surface or any combination thereof; the supporting surface is arranged at the middle or bottom part of the arc heating chamber and is a plane; and the door component comprises a front door body and a rear door body. The electric oven has the beneficial effects that the door component which can be opened and closed from the front and / or rear side is added to the shell component so that the structure of the oven is changed from the traditional square shape into a circular arc shape so as to obtain unique and novel appearance; meanwhile the practical use volume is increased, and the roasting situation of the food in the heating chamber can be clearly observed; and a heat-collecting cover can uniformly reflect radiant heat from an upper heating body and a lower heating body to various parts of the heating chamber so as to ensure even heat in the heating chamber and improve the barbecuing efficiency and quality of the food.

The invention provides an electronic load device and a load module with a heat dissipation function. The electronic load device comprises a mainboard and the load module. The mainboard is provided with a plurality of first ports, and the load module comprises a sub-board and a heat dissipation unit. The sub-board is provided with a second port and a pin slot, the second port is used for being connected with one of the plurality of first ports in a pluggable mode, and the pin slot is used for being connected with the power assembly. The heat dissipation unit is provided with a cylindrical body and a plurality of heat dissipation fins, the cylindrical body defines an outer surface and an inner surface opposite to the outer surface, and the heat dissipation fins are connected to the outer surface. When the power assembly is connected with the pin groove, the power assembly contacts the inner surface.

The invention provides a refrigerator waterway system and a refrigerator provided with the waterway system. The refrigerator waterway system comprises a filter arranged at the upstream of the waterway system, a water storage kettle which is connected with the filter and is arranged at the downstream of the filter, and a water valve which is connected with the water storage kettle and is arranged at the downstream of the water storage kettle, wherein the filter, the water storage kettle and the water valve are fixedly arranged on a door body of the refrigerator. According to the refrigerator waterway system, all major structures are arranged in the door body of the refrigerator, and all key parts of the refrigerator waterway system including the water valve, the water filter, the water storage kettle and the like are arranged on the door body of the refrigerator, so that the structure of the waterway system is simplified, the connection length between a waterway and a water pipe is shortened, and the occupation for the internal structural space of a refrigerator body is reduced while the functions of the refrigerator waterway are realized; and therefore, the use volume of the refrigerator can be increased.

The invention discloses a polarity reversal output-type inverter with power decoupling and a control method thereof. The main circuit topology of the inverter comprises a DC power supply, an input capacitor, a primary-side switch transistor, an isolation transformer, a cut-off diode, a filter capacitor, a polarity reversal inverter bridge, an output filter circuit, a power grid and a decoupling circuit. The control method comprises steps: a unit sinusoidal wave is acquired through a PLL from a power grid voltage sampling value, the maximum DC input power is acquired through an MPPT from inputvoltage and current sampling values, a voltage disturbance signal is acquired through a voltage loop from a decoupling capacitor voltage sampling value, five modulation wave signals are obtained through a current reference operation circuit and a modulation signal generating circuit, and finally, through a PWM control circuit and a logic circuit, a grid-connected inverter is controlled to work. Adecoupling circuit formed by a decoupling switch transistor, a decoupling diode and a decoupling capacitor is added to the primary side of the isolation transformer, secondary current ripples at the DC power supply input side are effectively eliminated, and grid connection is realized.

A bouncing mechanism of a car trunk comprises arch hinges, installation base boards and torsion rod springs. The left side and the right side inside the car trunk are respectively provided with one arch hinge, one installation base board and one torsion rod spring, and the two arc hinges, the two installation base boards and the two torsion rod springs are respectively arranged symmetrically and are identical in structure. One end of an arch arm of each arch hinge is hinged to the corresponding installation base board, each installation base board is installed on a lateral rail assembly, and the other end of each installation base board is hinged to a trunk cover. The inner end of each torsion rod spring is fixed to the corresponding installation base board and the outer end of each torsion rod spring is fixed to a clamping groove of a lateral rail inner board at the same side. Each arch arm is further hinged to a torsion spring connecting rod, the middle of each torsion rod spring is clamped with the corresponding torsion spring connecting rod, a fixing installation point at each inner end, a fixing point at the corresponding outer end and a clamping point of the middle of the corresponding torsion rod spring are not on the same line, and therefore it is guaranteed that a four-bar linkage mechanism is formed. According to the bouncing mechanism, the structure and the installation position of each torsion rod spring are changed and the torsion rod springs are arranged at the left side and the right side of the trunk instead of transversely penetrating through the trunk and then being fixed. The bouncing mechanism has the advantages of being simple and practical in structure, stable and reliable in performance, low in cost and weight and capable of being widely applied to a car trunk system with an arch hinge torsion rod spring mechanism.