66results about How to "Reduce charge" patented technology

The invention relates to the technical field of refrigerating systems, in particular to a micro-channel air conditioner phase change heat transfer evaporation heat exchanger. Comprising a flowing pipeline, the flowing pipeline is composed of a plurality of vertical pipelines and a plurality of bent pipelines connected with the vertical pipelines, and a continuous flowing path of a condensing agent is formed. And a mixing assembly specially used for stirring the condensing agent is arranged in the vertical pipeline. Fin assemblies are installed on the outer sides of the vertical pipelines, and the outer sides of the fin assemblies are wrapped by a complete shell. When the condensing agent flows in the flowing pipeline, the condensing agent can pass through the mixing assembly in each vertical pipeline to be fully mixed and uniformly distributed. The design ensures that the condensing agent in each vertical pipeline can reach an ideal uniform state. And then, the condensing agent flows through the fin assembly, and heat exchange is effectively carried out by utilizing the heat exchange area increased by the fins. By means of the layout, flowing of the condensing agent is optimized, and the heat exchange efficiency is remarkably improved.

The utility model belongs to the technical field of refrigeration compressors, and discloses a lower cylinder cover structure for a compressor pump body, the compressor pump body and a compressor. The lower cover body is of a cylindrical structure, and the outer diameter of the lower cover body is the same as that of an air cylinder. The lower end face of the lower cover body extends in the direction of a lubricating oil pool and is arranged close to the oil level of the lubricating oil pool. The lower cover body is designed to be of the cylindrical structure, the lower end face of the lower cover body extends towards the lubricating oil pool, the lower end of the lower cover body occupies the space above the lubricating oil pool, on the premise that the oil level of the lubricating oil pool is guaranteed, the space above the lubricating oil pool is reduced, the gathering amount of refrigerating working media is reduced, and the refrigerating efficiency is improved. The filling amount of the lubricating oil is reduced, meanwhile, the dissolving amount of the refrigerant in the lubricating oil liquid is effectively reduced, the filling amount of the refrigerant is effectively reduced, and the safety of equipment is improved.

The utility model discloses a liquid storage device and gas separation composite structure which comprises a liquid storage tank body and a gas-liquid separation tank body fixed in the liquid storage tank body, a liquid storage cavity is formed between the liquid storage tank body and the gas-liquid separation tank body, and a gas-liquid separation cavity is formed in the gas-liquid separation tank body. The liquid storage tank body is provided with a liquid storage inlet and a liquid storage outlet which are communicated with the liquid storage cavity, the gas-liquid separation tank body is provided with a gas-liquid separation inlet and a gas-liquid separation outlet which are communicated with the gas-liquid separation cavity, and the gas-liquid separation tank body is provided with a pressure relief plate between the gas-liquid separation cavity and the liquid storage cavity. The heat of the high-pressure end in the liquid storage cavity is used for heating the low-pressure end in the gas-liquid separation cavity, meanwhile, the cooling capacity of the low-pressure end is used for cooling the high-pressure end, so that the high-pressure end generates the supercooling degree while the low-pressure end generates the superheat degree, and after the supercooling degree of the high-pressure end is increased, the dryness of a refrigerant throttled by the throttling valve can be reduced; therefore, the refrigerant mass flow in the evaporator is improved, and the refrigerating capacity is improved.

The invention relates to a display panel and electronic equipment, the display panel comprises a light emitting element, a driving circuit and a pixel circuit, the driving circuit comprises a control branch, and the control branch is used for generating a first control signal; the pixel circuit is electrically connected with the control branch circuit and the light-emitting element, and comprises a first branch circuit which is used for receiving a first control signal; when the pixel circuit detects the first control signal, the first branch circuit resets the light-emitting element at least once in the preset frame according to the first control signal. The first control signal is generated through the control branch circuit of the driving circuit, and the first branch circuit of the pixel circuit resets the light-emitting element for at least one time in the preset frame according to the first control signal, so that the charge accumulated at the anode of the light-emitting element is less, and the turn-on voltage of the light-emitting element is not easy to reach; the problem of transverse leakage current between adjacent pixels is solved.

The invention relates to the technical field of new energy automobile charging management, in particular to an intelligent charging and discharging optimization method and system for a new energy automobile charging station battery, and the method comprises the steps: constructing a charging demand prediction model through employing a long short-term neural network LSTM model, and predicting the charging demand of a future time period; constructing a multi-type optimized charging and discharging strategy which comprises a peak load shifting strategy and a new energy consumption strategy; a battery charging efficiency evaluation model is constructed, the charging efficiency is monitored in real time, and abnormity is warned in time; based on the evaluated battery charging efficiency, constructing a battery charging scheduling model of the charging station, and when a plurality of batteries are charged at the same time, solving a global optimal charging power distribution scheme; according to the method, multiple aspects of charging demand prediction, charging and discharging strategy optimization, battery efficiency evaluation, charging scheduling and the like are comprehensively considered, and an effective solution is provided for intelligent operation of the new energy automobile charging station.

The utility model discloses a silicon carbide MOSFET device comprising at least one cell, and each cell comprises a silicon carbide substrate of a first doping type; an epitaxial layer of a first doping type; the well regions of the second doping type are located in the epitaxial layer, and JFET regions are arranged between the adjacent well regions; the source region of the first doping type is located in the well region; the contact region of the second doping type is located in the well region and is adjacent to the source region; the field oxide layer is located on the surface of the epitaxial layer and located above the JFET region; the gate oxide layer comprises a first gate oxide layer and a second gate oxide layer, and the first gate oxide layer and the second gate oxide layer are located on the two sides of the field oxide layer respectively and are adjacent to the field oxide layer respectively; the gate conductors comprise a first gate conductor and a second gate conductor, the first gate conductor covers the surface of the first gate oxide layer and part of the surface of the field oxide layer, the second gate oxide layer covers the surface of the second gate oxide layer and part of the surface of the field oxide layer, and the first gate conductor and the second gate conductor are separated from each other.

The application provides a semiconductor device manufacturing method and a semiconductor device. The method comprises the following steps: providing a semiconductor substrate, a first trench is formed in the semiconductor substrate, a field oxide layer is formed on the side wall and the bottom wall of the first trench, so that a space outside the surface of the field oxide layer in the first trench forms a second trench, and the first conductive material is filled in the second trench. The field oxide layer of the side wall of the first trench is removed to a first set depth to form a third trench. A barrier layer is formed on the bottom wall of the third trench, a gate oxide layer is formed on the side wall of the third trench, at least two separated gates are formed in the space outside the surface of the gate oxide layer in the third trench, the barrier layer is removed, and the gap between the separated gates is filled. Then, the space between the bottom of the separated gate and the upper surface of the field oxide layer forms an air layer. Due to the introduction of the air layer, the gate leakage capacitance and the gate-source capacitance are reduced, the switching loss and the conduction loss are reduced, and the opening rate of the device is improved.

The utility model relates to the technical field of refrigeration, and provides an efficient refrigeration system which comprises a compressor, a first efficient heat exchanger, a second efficient heat exchanger and an expansion valve. The first efficient heat exchanger is arranged on the compressor, and the first efficient heat exchanger and the compressor form an integrated structure. The second efficient heat exchanger is arranged on the compressor and forms an integrated structure with the compressor. The expansion valve communicates with the first efficient heat exchanger and the second efficient heat exchanger; the compressor, the first efficient heat exchanger, the expansion valve and the second efficient heat exchanger are sequentially connected in series, and the second efficient heat exchanger is connected with the compressor to form a heat exchange circulation loop. The first high-efficiency heat exchanger and the second high-efficiency heat exchanger respectively form an integrated structure with the compressor, so that the overall size is reduced after the first high-efficiency heat exchanger, the second high-efficiency heat exchanger and the compressor are connected, the overall size of the refrigerating system is reduced, and the accessory cost and the installation cost of the refrigerating system are reduced; meanwhile, the length of the guide pipe is shortened, the working efficiency of the refrigerating system is improved, and the leakage risk is reduced.

The invention relates to the technical field of intelligent power grids, in particular to an optical storage diesel alternating current and direct current micro-grid system which comprises a photovoltaic module, a diesel generator module, an energy storage module, an energy storage converter PCS, a DCDC converter, an STS intelligent switching cabinet and an energy management module. The photovoltaic module and the energy storage module are electrically connected with the STS intelligent switching cabinet through the energy storage converter PCS, the diesel generator module is electrically connected with the STS intelligent switching cabinet, the STS intelligent switching cabinet is connected with a user side load, and the diesel generator module, the energy storage module, the energy storage converter PCS, the DCDC converter and the STS intelligent switching cabinet are all in communication connection with the energy management module. The energy management module controls the photovoltaic module, the diesel generator module, the energy storage module and the power grid to supply power to the user side load, and the energy-saving potential of the system is further improved through a specific system structure and an energy management module control method.

Provided is a charging method with which charging with good efficiency can be possible while ensuring good cycle characteristics in a non-aqueous electrolyte secondary battery comprising a negative electrode that contains a carbon material. A charging method for a non-aqueous electrolyte secondary battery according to one aspect of the present disclosure comprises a switching step for switching the control temperature of a non-aqueous electrolyte secondary battery from high temperature to low temperature, wherein the non-aqueous electrolyte secondary battery includes a positive electrode and a negative electrode which reversibly perform intercalation and deintercalation of lithium ions, and the negative electrode contains, as a negative electrode active material, a carbon material and a silicon compound. The timing of the switching step is determined by detecting that dQGr / dQ, that is, the ratio of the amount of change in a capacity QGr of the carbon material to the amount of change in a battery capacity Q, becomes larger than dQsi / dQ, that is, the ratio of the amount of change in a capacity QSi of the silicon compound to the amount of change in the battery capacity Q.

The invention provides an ultra-high temperature heat pump unit adopting a lamella heat exchanger with a liquid storage device function, and relates to the technical field of heat pump units, a condenser comprises a container shell, a special-shaped liquid storage tank used for receiving liquid is integrally arranged at the bottom of the container shell, flange covers are installed on the two sides of the container shell, and the special-shaped liquid storage tank is used for containing liquid. A heat exchange assembly used for heat exchange is installed between the two flange covers. Due to the fact that the special-shaped liquid storage tank is arranged at the bottom of the container shell, when a gaseous refrigerant enters the container shell from the air inlet pipe and conducts heat exchange, the gaseous refrigerant can form liquid after heat exchange, then the liquid falls down and is stored in the special-shaped liquid storage tank, and compared with an existing unit heat exchanger and a liquid storage device which are separated and independent, the heat exchange efficiency is improved. The special-shaped liquid storage tank is integrated into the container shell, so that one pressure container can be reduced, the volume in the system is reduced, and the operation cost and the occupied area are effectively reduced.

The utility model discloses a liquid double rotor compressor and air conditioning system, wherein liquid double rotor compressor includes compressor body and gas -liquid separation liquid storage jar A, the compressor body includes seal cylinder body, be equipped with upper pump cavity and lower pump cavity in the seal cylinder body, be equipped with upper eccentric rotor in the rotation of upper pump cavity, be equipped with lower eccentric rotor in the rotation of lower pump cavity, the top of seal cylinder body is equipped with liquid outlet B, the side bottom of seal cylinder body is equipped with liquid inlet B, the top of gas -liquid separation liquid storage jar A is equipped with liquid inlet A, the bottom of gas -liquid separation liquid storage jar A is equipped with liquid outlet A, liquid outlet A and liquid inlet B are communicated through liquid -passing pipe. The utility model discloses liquid double rotor compressor and air conditioning system can reduce the risk of fluorine pump cavitation and promote the operation efficiency.

The utility model discloses a novel charging structure suitable for a large-diameter deep hole blasting mining method, which is characterized in that a plurality of rows of blast holes are distributed in a chamber to be mined, the blast holes are divided into pillar holes, middle holes and side holes according to positions, explosive layers and spacing layers are distributed in the blast holes at intervals, and hole bottoms and hole openings are filled with the explosive layers and the spacing layers, the hole opening of the blast hole is provided with a non-charging section not smaller than 5 meters, four emulsion explosives are filled in a single explosive layer of the pillar hole, three emulsion explosives are filled in a single explosive layer of the middle hole, four emulsion explosives are filled in an explosive layer close to the hole opening of the side hole, and two emulsion explosives are filled in other explosive layers. The blast holes with different charging structures are arranged in the to-be-mined chamber according to the vibration bearing capacity of different areas, and the 5-meter non-charging sections are reserved in the holes, so that the overall charging amount is effectively reduced, ore turning and damage to the adjacent chambers in the blasting process are avoided, and the blast hole structure has the advantages of low production cost, high operation safety guarantee, high efficiency and the like. And the enterprise safety and the economic benefit are effectively improved.

The utility model discloses a heat pump steam generating device which comprises a heat pump system and a steam system, the steam system is a shell and tube heat exchanger and comprises a barrel, tube plates used for fixing heat exchange tube bundles are arranged at the two ends of the barrel, and the heat exchange tube bundles are erected between the two tube plates at intervals from top to bottom. The tube plate and the inner wall of the barrel body form a tube box communicated with the heat exchange tube bundles, a pass partition plate for dividing a heat medium in the tube box to flow multiple heat exchange tube bundles from top to bottom is arranged in the tube box, a heat medium inlet is formed in the upper end of the tube box on one side, and a heat medium outlet is formed in the lower end of the tube box on one side; a steam outlet is formed in the top of the barrel; and a heat medium pipeline of the heat pump system is communicated with a heat medium inlet of the shell and tube heat exchanger and exchanges heat with the water circulation shell path. The high-temperature heat medium of the heat pump firstly exchanges heat with the water vapor with higher temperature through the pass partition plate, the temperature of the water vapor is further increased, and high-temperature and high-pressure water vapor higher than 150 DEG C can be directly generated without arranging a water vapor gas-liquid separation device and a flash tank.

The present invention discloses a spray falling film evaporator and a method for using the same, comprising a shell, a refrigerant liquid inlet pipe and a refrigerant vapor outlet pipe arranged on the shell, a liquid collector, a first refrigerant distribution unit, a first heat transfer tube group, a second refrigerant distribution unit and a second heat transfer tube group; wherein the refrigerant liquid inlet pipe and the refrigerant vapor outlet pipe are both arranged on the top of the shell, the liquid collector, the first refrigerant distribution unit, the first heat transfer tube group, the second refrigerant distribution unit and the second heat transfer tube group are sequentially arranged in the shell from top to bottom, and the refrigerant liquid inlet pipe, the liquid collector and the first refrigerant distribution unit are sequentially connected, which can improve the heat exchange efficiency.

The utility model relates to the field of quick-freezing equipment, and discloses a refrigeration house energy-saving aluminum calandria which comprises a first main pipe, a second main pipe is arranged on one side of the first main pipe, a connecting pipe is fixedly connected between the first main pipe and the second main pipe, one end of the first main pipe and one end of the second main pipe are fixedly connected with an inserting plate, and second inserting grooves are formed in the two ends of the connecting pipe. The outer wall of the inserting plate is slidably connected to the interior of the second inserting groove, E-shaped fins are arranged on the outer wall side of the first main pipe and the outer wall side of the second main pipe, the outer wall of the first main pipe and the outer wall of the second main pipe are slidably connected with the E-shaped fins, and the E-shaped fins are slidably connected to the interior of the first inserting groove. According to the utility model, the cross-shaped core is designed in the tube, so that the cross-shaped core can be better contacted with a refrigerant for heat exchange, and meanwhile, the E-shaped fins can enlarge the heat exchange area and improve the efficiency, so that the filling amount of the refrigerant is reduced, the effects of energy conservation and environmental protection are achieved, the problems of more material consumption and small heat exchange amount of the tube bank are solved, and the energy-saving property of the tube bank is improved.

The invention discloses a fingerprint reading circuit, a fingerprint identification module, a display assembly and electronic equipment, and belongs to the technical field of fingerprint detection. The fingerprint reading circuit comprises an operational amplifier, and the inverted input end of the operational amplifier is connected with the induction electrode; the first end of the feedback capacitor is connected with the inverted input end of the operational amplifier, and the second end of the feedback capacitor is connected with the output end of the operational amplifier; the first end of the bleeder circuit is connected with the induction electrode, and the second end of the bleeder circuit is grounded; or the first end of the bleeder circuit is connected with the first end of the feedback capacitor, and the second end of the bleeder circuit is connected with the second end of the feedback capacitor.

The present invention provides a MOSFET structure with a multi-layer gate control region and a preparation method, comprising: a substrate, the substrate comprising a first surface and a second surface arranged oppositely, the first surface covered with a doped drift layer, the surface of the doped drift layer is provided with a gate region and two source regions, the gate region is placed between the source regions; the gate region comprises a gate control region, the gate control region comprises a first gate control layer, a second gate control layer, a third gate control layer, a fourth gate control layer and a fifth gate control layer stacked in sequence and having different concentrations, the first gate control layer covers the doped drift layer. By setting the gate control region, the P-shield layer can be in a floating state when the device is turned on, which helps to improve the injection and distribution of carriers, reduce the lateral JFET resistance to a certain extent, reduce the amount of stored charge, and thereby reduce the on-resistance of the device, improve the reliability of the gate oxide layer, and improve the breakdown resistance of the device.

The invention relates to a power MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor), in particular to a charge plasma-based double-buried gate power MOSFET structure which sequentially comprises a p-type body region and an n-type drift region from top to bottom, polycrystalline silicon layers are arranged at the left end and the right end of the n-type drift region respectively, the upper surface, the lower surface and the inner surface of each polycrystalline silicon layer are wrapped by oxide layers, and n + charge plasma regions are formed at the left end and the right end of the p-type body region. A p + charge plasma region is formed at the top of the p-type body region; metalizing the substrate to form a drain electrode; metalizing the polysilicon gate layer on the outer side to form a gate; metalizing the outer side of the n + charge plasma region to form a first source electrode, and metalizing the p + charge plasma region to form a second source electrode; compared with an existing VDMOS structure, the VDMOS structure has the advantages of being smaller in thermal budget, lower in manufacturing complexity, lower in on resistance and charge, larger in power density and better in high-frequency performance index.

The application discloses a bearing-insulated electric drive system structure and belongs to the electric drive structure in an electric vehicle. The electric drive system structure comprises a motor front shell, a motor rear shell, a motor rear end cover, a motor shaft and a motor bearing. The motor shaft is internally provided with a de-electrization and impurity removal structure. The de-electrization and impurity removal structure comprises a first current collecting end, a second current collecting end, a coil and an impurity removal rod. When the structure is in a working state, the first current collecting end and the second current collecting end form an electric circuit between the two ends of the motor shaft, thereby reducing the electric charge on the surface of the motor shaft. The current passing through the coil makes the coil and the impurity removal rod combined into an electromagnet, which adsorbs the impurity particles in the lubricating oil. The application solves the problem in the prior art that when the lubricating oil is introduced into the motor, a large amount of electric charge is attached to the lubricating oil due to the friction between the lubricating oil and the motor shaft and the motor bearing, which increases the viscosity of the lubricating oil and reduces the lubricating effect.

The utility model belongs to the technical field of heat exchangers, and discloses an evaporator and a refrigerating system. The evaporator comprises a shell, a gas-liquid separator, a plurality of heat exchange tubes and a first distributor. Wherein the top of the shell is provided with a liquid inlet and an exhaust port, and the bottom of the shell is provided with a gas inlet; a gas-liquid two-phase refrigerant enters the gas-liquid separator from an inlet of the gas-liquid separator, a liquid outlet of the gas-liquid separator is communicated with the liquid inlet so as to convey a liquid refrigerant into the shell, and a gas outlet of the gas-liquid separator is communicated with the gas inlet so as to convey a gas refrigerant into the shell; the plurality of heat exchange tube bundles are arranged in the shell at intervals; the first distributor is arranged in the shell and located above the multiple heat exchange pipes, and the first distributor is configured to distribute the liquid refrigerant to the multiple heat exchange pipes. According to the evaporator, the heat exchange effect is guaranteed, meanwhile, the filling amount of refrigerants is small, the structure is simple, and cost is low.

This invention provides an air conditioning unit using a low-GWP, weakly flammable refrigerant, comprising an indoor cavity and an outdoor cavity. The outdoor cavity houses a compressor and a condenser, while the indoor cavity houses an evaporator. The indoor and outdoor cavities are arranged side-by-side. The compressor, condenser, and evaporator are sealed together via piping to form a refrigeration circuit. This refrigeration circuit is filled with a unidirectionally flowing low-GWP, weakly flammable refrigerant. The compressor is located on the side of the outdoor cavity closest to the indoor cavity, and the evaporator is located on the side of the indoor cavity closest to the outdoor cavity. A heating element, which independently executes the air conditioning unit's heating mode, is located on the side of the indoor cavity furthest from the compressor. This invention provides an air conditioning unit using a low-GWP, weakly flammable refrigerant. By filling a closed refrigeration circuit with this refrigerant, unidirectional flow refrigeration is achieved, and the heating element provides heating. The use of a microchannel condenser reduces the refrigerant charge, lowers costs, and reduces energy consumption.

The utility model discloses a plate type collecting pipe and a heat exchanger. The plate type collecting pipe comprises a plurality of plates which are arranged in a stacked mode, the plates comprise end plates, flow plates, flow equalizing plates and flat pipe inserting plates which are sequentially arranged in a stacked mode and jointly define one or more fluid channels, and each fluid channel comprises a flow hole channel and a flat pipe inserting plate, the plurality of flat tube insertion hole channels are formed in the flat tube insertion plate so as to be suitable for insertion of flat tubes; and the flow equalizing hole channel is arranged on the flow equalizing plate and is communicated with the flow path hole channel and the plurality of flat tube insertion hole channels. According to the plate-type collecting pipe, a fluid channel with a small space can be built in the plate-type collecting pipe through the plate-type design, accumulation of refrigerants in the collecting pipe is reduced, the filling amount of the refrigerants is reduced, cost is reduced, and the plate-type collecting pipe is more environmentally friendly. And meanwhile, by introducing the flow equalizing plates and the flow equalizing hole channels, the uniformity of two-phase flow of the refrigerant is improved, and the heat exchanger applying the plate type collecting pipe has high heat exchange efficiency.

In a two-component developer, toner particles include toner mother particles and external additive particles including strontium titanate particles. A first percentage content being a percentage content of the strontium titanate particles to the mass of the toner mother particles is 0.30-0.90% by mass. The carrier particles include carrier cores and coat layers. The coat layers contain barium titanate particles and a coating resin including a silicone resin. The barium titanate particles have a number average primary particle diameter of 100-500 nm. A second percentage content being a percentage content of the coat layers to the mass of the carrier cores is 2.0-4.0% by mass. A third percentage content being a percentage content of the barium titanate to the mass of the coating resin satisfies formula (1) "(X × 10) ≤ Z ≤ 45.0". In formula (1), X represents the first percentage content and Z represents the third percentage content.

The invention discloses a reverse osmosis membrane, a preparation method and application in the field of seawater desalination, and relates to the technical field of reverse osmosis filtration. The invention provides a reverse osmosis membrane. The reverse osmosis membrane is obtained by performing activation cross-linking treatment, modification cross-linking treatment and reduction treatment on a reverse osmosis membrane body. The invention provides a preparation method of the reverse osmosis membrane. The preparation method comprises the following steps: S1, preparing the reverse osmosis membrane body; s2, activating and cross-linking treatment; s3, carrying out modified cross-linking treatment; and S4, reduction treatment. The reverse osmosis membrane is applied to the field of seawater desalination. According to the prepared reverse osmosis membrane, the density of a desalination layer is greatly enhanced through two times of modified crosslinking, and the desalination rate and the boron removal rate of the membrane can be obviously improved; negative charges on the surface of the membrane are reduced by reducing carboxyl hydroxyl, so that the anti-pollution performance of the membrane is further enhanced.

The invention relates to a high-safety Bluetooth headset charging box, through an innovative contact protection mechanism, an oxide layer on a metal contact is periodically and automatically removed, the charging stability is ensured, the service life of the metal contact is prolonged, the charging safety and stability are ensured, and an overheating protection system realizes active safety management; safety accidents caused by overheating are effectively prevented, the active protection mechanism reduces potential risks of battery overheating, fire and the like, the buffer cavity defined by the outer groove shell and the inner groove shell and the miniature air bag provide good shockproof protection, damage to the earphone by external impact is reduced, the earphone is protected, and the safety of the earphone is improved. The charging box is simple in structure and convenient to use, reduces potential safety hazards possibly caused by damage of earphones, can automatically clean dust on the surfaces of the earphones and at the headset, provides a heat dissipation function, improves operation convenience through an automatic pop-up mechanism, overcomes the defects of a traditional charging box in the aspects of safety, cleaning and convenience, and is suitable for popularization and application. And a high-quality product which is reliable for a long time and easy to use is provided for a user.

The present invention provides a condensing device and an air conditioning system having the same, wherein the condensing device comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger has a first inlet for allowing refrigerant to enter and a first outlet for allowing refrigerant to flow out after cooling and heat exchange, and the second heat exchanger has a second inlet for allowing refrigerant to enter and a second outlet for allowing refrigerant to flow out after cooling and heat exchange; the supercooling section of the second heat exchanger has a third inlet that can be connected to the first outlet, and the third inlet and the first outlet are connected through an intermediate pipe, so that the fluid flows from the first outlet, the intermediate pipe and the third inlet to the second heat exchanger in sequence, and the diameter of the first heat exchange tube of the first heat exchanger is greater than the diameter of the second heat exchange tube of the second heat exchanger. The present invention increases the flow rate of the refrigerant in the supercooling section heat exchange tube, quickly takes away the liquid film refrigerant on the wall, effectively strengthens the effect of condensation heat exchange, increases the heat exchange amount, and reduces the amount of refrigerant charged in the condenser.

The invention relates to an energy storage layout method for minimizing charging off-grid electric quantity of a new energy delivery base. The method comprises the following steps: acquiring basic data of a power base to be planned; setting a to-be-optimized variable; on the basis of the basic data and the variables to be optimized, calculating the annual charging off-grid electric quantity of the energy storage device in the base; establishing a nonlinear optimization model by taking the lowest network electric quantity of the energy storage device in the base under annual charging as an optimization target and combining the basic data and the variables to be optimized; outputting construction power for configuring energy storage and construction power for independent energy storage for each new energy station; and introducing an intermediate variable to convert the nonlinear optimization model into a linear programming model, and solving to obtain new energy station configuration energy storage and independent energy storage construction power. By scientifically optimizing the energy storage configuration scale of each new energy station in the base, the energy storage charging demand is fully ensured to be supplied by the local new energy electric quantity as far as possible, the base energy storage off-network charging electric quantity is minimized, and the base energy storage off-network charging electric quantity is effectively reduced.

An electronic device according to various embodiments disclosed herein includes a first housing, a second housing connected to the first housing such that the position thereof relative to the first housing is variable, a wireless charging antenna which includes a shielding member and a reception coil alternately wound on a first surface of the shielding member and a second surface opposite to the first surface, the wireless charging antenna being disposed in at least one of the first housing and the second housing, and a battery electrically connected to the wireless charging antenna.