367results about How to "Reduce temperature rise" patented technology

The invention relates to the technical field of charging management, and discloses an intelligent charging management method, device and equipment for an electric scooter and a storage medium, and the method comprises the steps: carrying out the parameter collection and initialization setting of a single-phase bidirectional converter and a permanent magnet synchronous motor in the electric scooter, obtaining system basic parameters and communication data, and obtaining a network authentication identifier and a charging station operation parameter. And dynamic planning of a charging strategy is executed according to the parameters to generate a segmented charging control curve. And the data are input into the self-adaptive prediction controller to realize real-time adjustment in the charging process, and charging state data and power compensation parameters are obtained. And adopting a double-neural network model structure to obtain a battery safety feature matrix and a fault probability vector. And constructing a three-dimensional charging state space model to carry out optimization calculation on the power compensation parameters, inputting a deep reinforcement learning network to carry out iterative optimization, and generating charging control parameters of the next period, thereby improving the charging efficiency and the electric energy quality of the electric scooter.

The invention discloses an asymmetric radial electromagnetic bearing and a design method thereof, and the asymmetric radial electromagnetic bearing comprises an asymmetric radial electromagnetic bearing stator, an asymmetric radial electromagnetic bearing rotor and a winding coil. The design method of the asymmetric radial electromagnetic bearing comprises the following steps: pre-determining parameters; calculating the electromagnetic force of the asymmetric radial electromagnetic bearing in the X and Y directions; and calculating each structural parameter of the asymmetric radial electromagnetic bearing. Compared with a traditional symmetric radial electromagnetic bearing structure and an asymmetric electromagnetic bearing disclosed at present, the asymmetric radial electromagnetic bearing has the advantages that electromagnetic force coupling in the horizontal and vertical directions is small, control is facilitated, electromagnetic loss is low, and temperature rise of the rotor can be reduced.

The invention relates to the technical field of automobiles and industrial electronics, in particular to a power device embedded circuit board integrated with a ceramic plate and a preparation method of the power device embedded circuit board, and the power device embedded circuit board comprises the ceramic plate, a power device, a conductor layer, an insulating layer, a metal conduction blind hole, a bottom copper plating layer, an assembly welding layer and a blind groove. Compared with a traditional power module, the switching speed is higher, the switching loss is smaller, and the design is more flexible; compared with a power device embedded circuit board in the market, the circuit board has the advantages of lower thermal resistance, lower temperature rise and higher current output capability. The advantages of a traditional power module and an embedded circuit board are integrated, switching loss is small, thermal resistance is small, and the current output capacity can be greatly improved.

The invention discloses an internal-cooling-based high-frequency coupling window for a high-power cyclotron. The internal-cooling-based high-frequency coupling window is characterized in that an air knife structure is arranged at the atmosphere end of the internal-cooling-based high-frequency coupling window; two groups of conductor choke units with different lengths are arranged on two sides of a ceramic chip of the high-frequency coupling window based on internal cooling, and the two groups of conductor choke units with different lengths are equivalent to two groups of inductors and are used for forming a double-filter circuit of the high-frequency coupling window; a ceramic coating film is arranged on one side of the ceramic sheet of the high-frequency coupling window; according to the air knife structure, more heat on the surface of the ceramic chip is taken away through compressed air; on one hand, the filter unit and the conductor choke unit form a filter circuit of a high-frequency coupling window atmosphere end; according to the invention, the air knife structure is ingeniously utilized, and enhanced cooling is carried out on the ceramic wafer of the coupling window structure; the inductance value of the coupling window is adjusted by using the conductor choke unit, the standing-wave ratio coefficient of the coupling window is reduced, the surface temperature of the ceramic chip is reduced, and the risk of explosion of the coupling window is reduced.

The invention discloses a robot servo motor based on magnetic assistance characteristics, which comprises a stator core, a rotor core and magnetic steel, the stator core comprises laminated stator punching sheets and windings, the rotor core comprises multiple layers of laminated rotor punching sheets, spoke type magnetic steel grooves and multiple layers of air magnetic barriers are arranged on the rotor punching sheets, and the magnetic steel is arranged in the magnetic steel grooves; the multiple layers of air magnetic barriers comprise a plurality of arc-shaped magnetic barriers symmetrically arranged on the two sides of the magnetic steel grooves, the arc-shaped magnetic barriers comprise a first arc-shaped magnetic barrier, a second arc-shaped magnetic barrier, a third arc-shaped magnetic barrier and an interelectrode arc edge triangular large magnetic barrier, and a rotor excircle magnetic barrier is arranged at the top of each spoke type magnetic steel groove on the rotor punching sheet. The motor has the advantages that the anti-demagnetization performance and the torque output stability of the motor can be improved while the heat dissipation area of the motor is not changed and the cost of the motor is not additionally increased.

According to the reinforced heat dissipation structure of the epoxy pouring dry-type transformer and the manufacturing process of the reinforced heat dissipation structure, the reinforced heat dissipation structure of the epoxy pouring dry-type transformer comprises an iron core, a winding, a base and a heat dissipation device; the winding comprises a low-voltage winding and a high-voltage winding, the low-voltage winding sleeves the outer side of a core column of the iron core, the high-voltage winding sleeves the outer side of the low-voltage winding, and a main channel is reserved between the high-voltage winding and the low-voltage winding; and the heat dissipation element is arranged in a main channel formed by the high-voltage winding and the low-voltage winding. The high-voltage side heat conduction layer is connected with the inner wall of the high-voltage winding, the low-voltage side heat conduction layer is connected with the outer wall of the low-voltage winding, the heat conduction efficiency is improved, meanwhile, the heat dissipation element is installed in the main channel, and the heat dissipation capacity of the main channel is enhanced. In addition, the heat dissipation device and the winding are integrally formed in a casting mode, the heat dissipation capacity of the main channel is enhanced, heat resistance among all components is effectively reduced, and therefore the overall heat conduction efficiency is improved.

The invention relates to the technical field of computer electronic products, in particular to an immersed liquid cooling heat exchange device and method.The immersed liquid cooling heat exchange device comprises a complete machine assembly, a pressure gauge is arranged on the upper portion of the complete machine assembly, a vacuum pump is arranged at the position adjacent to the pressure gauge, and an air compressor is arranged at the position adjacent to the vacuum pump. Compared with the prior art, a preset temperature and pressure relative database can be formed through a temperature detection feedback mechanism and a software presetting function, interaction of the air compressor and the vacuum pump is adjusted, and adaptation of the pressure and the temperature in the case is achieved.

The utility model discloses an aluminum profile machining and forming device with a cooling mechanism, which relates to the field of profile machining and comprises a workbench and an aluminum profile forming device body fixedly connected with the top end of the workbench, and a feeding port is arranged in the middle of the top end of the aluminum profile forming device body. The bottom end of the feeding port extends into the aluminum profile forming device body, mounting plates are fixedly connected to the two ends of the top end of the workbench correspondingly, and cooling mechanisms used for cooling the aluminum profile forming device body are arranged at the positions, at one ends of the mounting plates, of the two ends of the aluminum profile forming device body correspondingly. According to the aluminum profile machining and forming device with the cooling mechanism, aluminum profiles can be better cooled and formed through the cooling mechanism, the machining efficiency is guaranteed, cooling liquid is conveyed into the cooling pipe through a water pump, and therefore the outer side of the aluminum profile forming device body is cooled; and the condition of temperature rise caused by aluminum profile machining is reduced, and cooling forming of the aluminum profile is effectively assisted.

The invention discloses an electrolyte and a lithium battery, which are used for solving the technical problems that the charging temperature is increased, the side reaction of a system is increased, the lithium precipitation risk of a negative electrode is increased and the cycle performance is deteriorated when the charging rate of the existing lithium battery is improved. The electrolyte comprises a lithium salt, a solvent and an additive, the solvent comprises fluorocarboxylic ester, and the additive comprises an additive A. In the design, by adding the additive A into the electrolyte, when oxygen atoms in the substance structure are formed, an electron can be obtained, a five-membered ring is broken, and a sulfite product is further obtained through reaction, so that the interface film-forming impedance can be effectively reduced, and the risk of temperature rise and lithium precipitation can be reduced; meanwhile, the fluorocarboxylic ester in the solvent is matched, so that the dynamic stability and the thermal stability can be considered, the fast charging performance, the high-temperature circulation performance and the storage performance of the lithium battery are considered, and in addition, the safety performance of the lithium battery can also be improved.

The invention provides a high-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation and a working method, and the structure comprises a vacuum arc-extinguishing chamber heat dissipation device, a liquid metal diversion pipeline, and a liquid metal cooling circulation system. The vacuum arc-extinguishing chamber heat dissipation devices are arranged on the two sides of the vacuum arc-extinguishing chamber; the end part of the liquid metal flow guide pipeline is communicated with a liquid metal cooling circulation system; the vacuum arc-extinguishing chamber heat dissipation device is internally provided with heat dissipation fins; and the liquid metal flow guide pipeline is embedded in the radiating fins. The overall heat dissipation capability of the circuit breaker is improved by introducing the liquid metal, the heat dissipation structure of the vacuum arc-extinguishing chamber timely exports heat generated by the vacuum arc-extinguishing chamber, the heat is finally exported to the outside of the circuit breaker through circular flow of the liquid metal, the steady-state temperature rise during operation of the circuit breaker can be effectively reduced, and the service life of the circuit breaker is prolonged. The method is of great significance in improving the capacity of the generator circuit breaker and ensuring safe and reliable operation of the circuit breaker.

The current collector comprises a foil and a conductive layer, the conductive layer and the foil are stacked, the conductive layer comprises a first area and a second area, the first area is closer to the edge of the foil than the second area, the conductivity of the first area in the first direction is A, the conductivity of the second area in the first direction is B, and A is smaller than B. By arranging the foil and the conductive layer, the conductivity A of the first region and the conductivity B of the second region meet the condition that A is less than B, the conductivity of the edge of the current collector can be inhibited, and the current of the current collector can be reduced, so that the temperature rise of the edge region is reduced, the temperature difference between the edge of the current collector and the middle of the current collector can be reduced, lithium precipitation is reduced, and the service life of the battery cell is prolonged.

The invention relates to the technical field of steel rolling, and discloses a novel gear box type wear-resistant disc side guide plate before hot rolling and coiling, which comprises a roller bed supporting beam, a hydraulic push rod is assembled on the side wall of the roller bed supporting beam, a guide plate beam is fixedly connected to the output end of the hydraulic push rod, a disc taper shank is assembled in the guide plate beam, and the disc taper shank is fixedly connected to the output end of the hydraulic push rod. A disc lining plate is connected to the outer portion of the disc taper shank in an interference fit mode, the disc taper shank is sleeved with a gear shaft, the interior of the gear shaft is in threaded connection with a screw rod, and the screw rod penetrates through a center hole of the gear shaft and extends into the disc taper shank. According to the novel gearbox type wear-resistant disc side guide plate before hot rolling and coiling, an integrated rotating body is combined through the pre-tightening force of the bolts, so that only one nut is needed for disassembling and assembling the disc; the rotation axis of the disc is ensured to be highly overlapped with the axis of the gear shaft by utilizing the Morse taper, so that the bending moment resistance and the radial impact load bearing capacity of the disc are greatly improved.

The invention relates to the technical field of motors, and discloses an axial motor cooling structure and an axial motor, and the axial motor cooling structure comprises a support which is composed of a cylinder, a first supporting rod and a second supporting rod; the cylinder and two adjacent groups of first support rods and second support rods support and fix the stator winding; a first flow channel is formed among a group of first supporting rods, a group of second supporting rods, two adjacent stator windings and the outside of the cylinder; a second flow channel for communicating two adjacent first flow channels is arranged in the cylinder; a third flow channel is arranged in the machine shell, and the third flow channel communicates with the two adjacent first flow channels. Coolant flows in the first flow channel, the second flow channel and the third flow channel. The stator winding is supported and fixed through the support, the first flow channel is arranged between the support and the stator winding, heat generated by the stator winding is directly conducted out through the coolant when the axial motor operates, the purpose of efficient heat exchange is achieved, the temperature of the axial motor is lowered as soon as possible, stable and reliable operation of the axial motor is guaranteed, and the service life of the axial motor is prolonged. And the purpose of bracket reuse is achieved.

The air fryer comprises a machine shell and a reflecting cover, the reflecting cover divides the inner space of the machine shell into a heating cavity and a heat dissipation cavity, a hot air fan and a heating piece are arranged in the heating cavity, a motor for driving the hot air fan and a heat dissipation fan connected with the motor are arranged in the heat dissipation cavity, and an air inlet communicated with the heat dissipation cavity is formed in the machine shell. An air guide cover and a plurality of air guide ribs located on the periphery of the air guide cover are further arranged in the heat dissipation cavity, the air guide cover is provided with an air guide inlet and an air guide outlet communicated with the outside atmosphere, the heat dissipation fan is arranged in the air guide cover, a heat dissipation air channel is formed between every two adjacent air guide ribs in the multiple air guide ribs, and the heat dissipation air channels are communicated with the air inlet and the air guide inlet. Air flow extracted by the rotating cooling fan through the air inlet sequentially flows through the cooling air channels and the air guide cover and then is exhausted through the air guide outlet. According to the air fryer, the airflow short circuit phenomenon is effectively reduced, the problem of high temperature of a local area is solved, the heat dissipation effect is improved, and the machine surface temperature is reduced.

The invention belongs to the technical field of asphalt production, and discloses granular asphalt screening equipment for petroleum asphalt production and a screening method.The equipment comprises a mounting cylinder, a screening cylinder, a supporting rod, a fixing ring, a scraper and a material guiding ring arranged in the mounting cylinder in a sleeved mode, and the screening cylinder is rotationally connected to the two ends of the material guiding ring; a plurality of annular grooves are formed in the inner wall of the screening cylinder, a plurality of screening holes used for screening granular asphalt are formed in the inner walls of the annular grooves, the supporting rod is arranged in the material guiding ring and the screening cylinder in a sleeved mode, and the fixing ring is arranged on the supporting rod in a sleeved mode and fixedly connected with the supporting rod. When the screening cylinder rotates, the scraper slides along the inner wall of the annular groove in the screening cylinder, and when sliding, the scraper can extrude asphalt particles blocked in the screening holes through the multiple screening holes, so that the asphalt particles are extruded out along the inclined plane on the scraper, and due to the design, the blocked asphalt particles can be quickly cleaned out; the deeper and deeper asphalt is avoided, and the cleaning efficiency and the cleaning effect are improved.

The invention discloses a sulfur-resistant carbon dioxide methanation catalyst as well as a preparation method and application thereof. A carrier of the catalyst comprises Al2O3 and ZrO2, a carrier modifier is nitrogen-doped mesoporous carbon and / or silicon carbide, active components comprise NiO and MoO3, auxiliaries comprise CeO2 and MnO2, and a coating is a Co-Zn coating. The content of Al2O3 is 10-70 wt%, the content of ZrO2 is 2-15 wt%, the content of the carrier modifier is 1-75 wt%, the content of the active component is 10-50 wt%, and the content of the auxiliary agent is 1-5 wt%. The catalyst is high in reaction efficiency, good in stability, high in selectivity and good in heat resistance; during use, different catalysts are filled in a layered manner, the temperature rise of a bed layer is mild, the hot-spot temperature is low, and a local high-temperature region is avoided, so that sulfur poisoning and sintering inactivation of the catalyst are avoided, the investment and operation cost is reduced, the service life of the catalyst is prolonged, and the operation safety of the device is improved.

The invention relates to an electromagnetic wave while-drilling multipath two-way transmission system, method, device, equipment and medium, the system comprises an underground transceiver system, a ground transceiver system, underground measuring equipment and a PC, the underground transceiver system comprises an underground transceiver and an underground antenna, and the ground transceiver system comprises a ground transceiver and a ground antenna; the underground transceiver comprises a first digital signal processing module, and the first digital signal processing module comprises a first sending processing module and a first receiving processing module; the ground transceiver comprises a second digital signal processing module, and the second digital signal processing module comprises a second sending processing module and a second receiving processing module. According to the underground transceiving system and the ground transceiving system, the electromagnetic wave channels are multiplexed in a time division mode, and the influence of conflicts and interference in the data transmission process is reduced. Source coding processing, convolutional coding processing and code element repeated processing are carried out on initial data, so that wireless electromagnetic waves can be transmitted while drilling more efficiently, stably and reliably.

The utility model discloses a single-core bent connector, which is provided with a plug component and a socket component. The jack of the plug component is integrally formed by punching, is arranged in the plug shell and is provided with a contact part and a crimping part which are connected through a connecting part; the crimping part is sleeved with a tail cover, the tail nut is connected with the plug shell, and the wire sealing body is compressed in the tail nut at the rear end of the crimping part; an insulating cap of the socket component is fixed at one end of a pin; the contact pin is arranged in the socket shell and can be prevented from withdrawing; the connecting sleeve is arranged outside the socket shell in a limiting and sleeving mode and can rotate by 360 degrees. And the socket component is plugged with the contact part of the jack, and the contact part is plugged between the pin and the socket shell and is clamped and positioned with the plug shell through an excircle convex point outside the connecting sleeve. The single-core bent energy storage connector has the characteristics of high protection, high voltage resistance, high power and the like.

According to the method for cleaning dirt and blockage of the electrodialyzer, on the basis that the electrodialyzer is not disassembled and detected, microorganisms, organic dirt and blockage and inorganic dirt and blockage in the electrodialyzer are efficiently removed through the cooperation mode of circulating sterilization, alkali washing and acid washing, damage to a membrane is reduced, and the production cost is reduced. After the electrodialyzer is cleaned through the method, the water treatment amount, the flow speed and the ion migration efficiency of the electrodialyzer can be effectively recovered, and the designed flux is achieved; meanwhile, the temperature rise of the electrodialyzer can be delayed, the service cycle of the electrodialyzer is prolonged, and the energy consumption of the electrodialyzer is reduced. The method is suitable for cleaning organic sewage plugs and inorganic sewage plugs of heterogeneous membrane electrodialyzers, semi-homogeneous membrane electrodialyzers, homogeneous membrane electrodialyzers, bipolar membrane electrodialyzers and the like, and is wide in application range and high in decontamination efficiency.

The invention discloses a cold head container for a liquid-helium-free superconducting magnet and a using method of the cold head container, and belongs to the technical field of superconducting magnetic resonance equipment.The cold head container comprises a first-level container heat transfer block and a second-level container heat transfer block, a sleeve is arranged above the first-level container heat transfer block, and the bottom end of the sleeve is fixedly communicated with a through hole of the first-level container heat transfer block; an upper flange is fixedly installed at the top end of the sleeve, a connecting flange is fixedly installed above the upper flange, a plurality of evacuation sealing valves are arranged on the peripheral side of the connecting flange and communicate with the interior of the sleeve, and a plurality of evenly-distributed flexible cold guide plates are fixedly connected to the peripheral side of the container primary heat transfer block. A connecting pipe and a corrugated pipe are arranged between the container primary heat transfer block and the container secondary heat transfer block; the using method of the cold head container comprises the steps that S1, the magnet is pre-cooled; s2, dismounting the pre-cooling assembly; s3, mounting the refrigeration component; according to the cold head container, the pre-cooling time of the magnet can be remarkably shortened, and meanwhile, the refrigeration part is more convenient to replace.

The invention discloses a bus duct structure and an assembly method thereof, and the bus duct structure comprises a housing which is provided with at least one installation groove. The insulating layer is attached to and covers the inner surface of the mounting groove; the insulating layer is arranged in the mounting groove, the groove opening of the mounting groove can allow the connecting row to enter or exit from the mounting groove along the depth direction of the mounting groove, the connecting row is embedded in the mounting groove through the groove opening of the mounting groove, and the connecting row is in contact with the insulating layer in an attached manner. According to the bus duct structure and the assembly method thereof provided by the invention, the assembly steps can be effectively simplified, and the temperature rise can be reduced.

The invention relates to an epoxy resin pouring type transformer with built-in microcirculation cooling channels and a heat dissipation method of the epoxy resin pouring type transformer, and belongs to the technical field of power transformers. The epoxy resin pouring type transformer comprises an iron core, a low-voltage winding, a high-voltage winding and a heat dissipation shell, the low-voltage winding and the high-voltage winding are completely impregnated and wrapped by an epoxy resin composite material through a vacuum pouring process, an integrated epoxy resin pouring body is formed after curing, and a three-dimensional communicated bionic microcirculation cooling channel network is arranged in the epoxy resin pouring body; the heat dissipation shell is in close contact with the outer surface of the epoxy resin pouring body through the high-heat-conductivity insulating medium. According to the invention, the heat dissipation efficiency can be remarkably improved, and a cooling medium (air) is directly guided to a microscopic area around the winding conductor through a three-dimensional communicated and tree-shaped fractal bionic microcirculation cooling channel network, so that the effective heat exchange area and the heat exchange strength are greatly increased, and internal heat can be accurately and efficiently taken away.

The invention relates to a lithium slag-based temperature-inhibiting anti-cracking waterproof agent and a preparation method thereof, and belongs to the technical field of building materials such as cement and concrete. The lithium slag-based temperature-inhibiting anti-cracking waterproof agent comprises the following components in percentage by mass: 40%-50% of modified lithium slag, 18%-30% of a calcium ion compensating agent, 9%-19% of a complexing agent, 10%-23% of a precipitation component, 1%-4% of silicone zirconium and 3%-7% of temperature change induction fibers, wherein the total mass of the raw materials is 100%; the preparation method comprises the following steps: weighing the raw material components according to the mass fraction, and uniformly mixing to obtain the lithium slag-based temperature-inhibiting anti-cracking waterproof agent. The lithium slag-based temperature-inhibiting anti-cracking waterproof agent can be used for specifically reducing concrete shrinkage cracks, reducing the internal temperature rise of the concrete and realizing crack self-repairing in the service stage of the concrete.

The utility model relates to the technical field of laser application, in particular to a laser frequency stabilization device based on an etalon frequency measurement technology, which comprises a laser emission unit, a frequency detection unit, a frequency stabilization laser output end and a master control adjusting unit, the frequency detection unit comprises an optical splitter, an optical attenuator, a first photoelectric detector, an etalon and a second photoelectric detector. An etalon in the frequency detection unit is used as a frequency reference, an optical attenuator is arranged to reduce temperature rise and improve precision, a first photoelectric detector and a second photoelectric detector are used to provide a frequency measurement error signal and a reference signal, and the master control adjustment unit is used to carry out analysis and calculation according to the error measurement signal and the reference signal. And the laser emitting unit adjusts the laser frequency according to the adjusting signal, so that the frequency stabilization adjustment of the laser is realized.

An electrochemical apparatus includes an electrode assembly and a conductive plate. The electrode assembly is of a wound structure and includes a first electrode plate. The first electrode plate includes a first conductive layer and a first conductive material layer. The first conductive layer includes a first surface and a second surface. The first conductive material layer is provided on the first surface. The first surface includes a first region. The conductive plate is connected to the first region and extends out of the first electrode plate. The conductive plate includes a third region and a fourth region connected to each other. The third region includes a connection region. The conductive plate is connected to the first region through the connection region. The third region includes a first side, a second side, a third side, and a fourth side. The first region includes a fifth side, a sixth side, and a seventh side. A size of the third region in the third direction is T1, a size of the third region in the second direction is T2, an area of the third region is S1, an area of the connection region is S2, a distance between the first side and the fifth side is J1, a distance between the second side and the sixth side is J2, and a distance between the third side and the seventh side is J3, where S2 / S1 + (J1 + J2 + J3) / (T1 + T2) ≥ 30%. This application further provides an electronic apparatus.

The invention relates to the technical field of bus ducts, and particularly provides a sealing plate assembly of a heat dissipation type bus duct connection area, which comprises a top plate, a bottom plate and two side plates arranged oppositely, the two side plates are arranged between the top plate and the bottom plate, and the two side plates, the top plate and the bottom plate enclose to form a connection area outer cover space. The top plate comprises lap joint sections located at the two ends of the top plate and a middle section located between the two lap joint sections, and the two lap joint sections are in lap joint with the outer sides of the tops of the adjacent bus duct sections respectively. A heat transfer path is formed between the closing plate assembly on the outer side of the connection area and the adjacent bus duct sections, heat generated in the operation process of the connection area can be diffused to the adjacent bus duct sections, the heat diffusion range is enlarged, local gathering of heat near the connection area is reduced, and the service life of the bus duct is prolonged. And the heat dissipation capability of the connection area is improved, and meanwhile, the sealing protection requirement of the connection area is considered.

The utility model relates to an interface structure, a functional module, electronic equipment and an electronic equipment accessory. The interface structure comprises an interface, the interface comprises a tongue piece, the tongue piece comprises a plurality of preset positions used for arranging functional terminals, and at least one preset position is provided with a grounding terminal and a detection terminal which are insulated from each other. The grounding terminals and the detection terminals which are insulated from each other are arranged at at least one preset position, so that the situation that the number of the grounding terminals on the tongue piece is reduced due to the fact that the detection terminals occupy the preset positions is avoided. As the number of the grounding terminals on the tongue piece is not changed, when the charging equipment is inserted into the interface to charge the electronic equipment, the temperature rise generated by charging is reduced, so that the charging power of the electronic equipment is improved. Meanwhile, as the detection terminal can detect whether the electronic equipment accessory is inserted into the interface or not, the possibility of corrosion of the functional terminal on the tongue piece is reduced, and the reliability of the interface structure is improved.

The invention provides a double-side transverse flux linear motor which comprises a single-phase primary unit, and the single-phase primary unit comprises a primary winding, a primary permanent magnet and two primary iron cores which are arranged in a staggered manner. Each primary iron core comprises a wide tooth, two narrow teeth located on the left side and the right side of the wide tooth and a magnet yoke connected to the first end of the wide tooth and the first end of each narrow tooth, the primary winding is arranged on the wide teeth of the two primary iron cores in a surrounding mode, and in the same primary iron core, the wide teeth and the two narrow teeth are spaced front and back in the linear motion direction of the primary iron cores. According to the invention, the mutual inductance between the wide teeth and the narrow teeth can be reduced, the induced current caused by the mutual inductance between the wide teeth and the narrow teeth is reduced, the probability of high-temperature burning loss of the primary winding and high-temperature demagnetization of the primary permanent magnet is reduced, and the mutual limitation of the sizes of the wide teeth and the narrow teeth in the same plane is avoided; and on the premise of the same motor performance, the structure of the front-back staggered primary iron core is more compact.

The utility model discloses a film capacitor for flexible direct current power transmission, which belongs to the technical field of capacitors and comprises a shell, a plurality of capacitor cores and extraction electrodes, the shell is made of metal materials, the plurality of capacitor cores are grouped to form a plurality of capacitor core independent groups, and the extraction electrodes are arranged in the shell. Each capacitor core independent group is connected with a tinned copper plate, the lead-out electrode is provided with a laminated busbar and is connected with the tinned copper plate in a matched manner through the laminated busbar, and the plurality of capacitor core independent groups are packaged in the shell through a potting material. The thin-film capacitor can simultaneously meet the performance requirements of low self-inductance, low temperature rise, high energy density, light weight and long service life, thereby effectively improving the safety and reliability of the thin-film capacitor for flexible direct-current power transmission.

The present invention relates to the technical field of coffee machines, and discloses a grinding coffee machine, comprising a support seat, on which are respectively provided an installation component, an adjustment component, a driving component and a grinding component; the installation component, whose bottom end is hingedly arranged with the top end of the support seat, so that the position of the installation component is easy to adjust for internal inspection or maintenance of the installation component; the adjustment component, whose moving end is fixedly connected with the top end of the driving component, so that the adjustment component drives the driving component to move; the present invention starts the driving component to drive the dynamic knife component to rotate, so that the dynamic knife component and the static knife component can grind coffee beans at an angle with each other, and both the dynamic knife component and the static knife component can drive the blade to rotate in a cycle, so that when the dynamic knife component is rotating and grinding, the friction extrusion force time of the blade can be shortened, the temperature rise of the blade can be slowed down, and the taste of the coffee powder can be avoided.