380 results about "Air core" patented technology

The invention provides a highly-integrated new energy motor home heat management system. The system comprises a refrigerating loop, a battery loop, a motor loop, a warm air loop, an engine loop, a water purification loop, a ten-way valve, a water supplementing kettle and a water supplementing pipeline. The refrigerating circuit comprises a compressor, a condenser, an electromagnetic expansion valve, an air conditioner evaporator and a chiller, the battery circuit comprises a power battery, a battery pump and a water temperature sensor, and the motor circuit comprises a motor water pump, a water temperature sensor, an electric control three-in-one unit, a driving motor, an on-off electromagnetic valve and a low-temperature radiator. The warm air loop comprises a double-area high-pressure liquid heater, a warm air pump, a cab warm air core body and a living cabin warm air core body, and the engine loop comprises an engine, an engine water pump, a water temperature sensor, a thermostat, a high-temperature radiator, an on-off electromagnetic valve and a plate heat exchanger. The water purification loop comprises a water purification tank, a water temperature sensor, a water purification pump, a three-way valve and water consumption equipment. The limo water purification system is coupled with the whole limo thermal management system, loops in the system are integrated through the heat exchanger and the ten-way valve, and maximum waste heat utilization is achieved through series-parallel connection of the loops so as to reduce energy consumption.

An electric vehicle thermal management system and a control method thereof. The thermal management system comprises a refrigerant loop, a cooling liquid loop, and a control system; the refrigerant loop is provided with a compressor (1), a water-cooled condenser (2), an outside heat exchanger (3), an evaporator (4), a battery cooler (5), and a gas-liquid separator (6); the cooling liquid loop comprises an electric drive loop, a battery loop, and a warm air loop, the electric drive loop being provided with an electric drive assembly (16), a low-temperature radiator (17), and a first water pump (18), the battery loop being provided with a battery (19), a second water pump (20), and a third one-way valve (21), and the warm air loop being provided with the water-cooled condenser (2), a passenger compartment warm air core body (22), and a third water pump (23); and the control system is provided with a plurality of three-way valves (24, 25) and a plurality of loop coupling points (26, 27, 28, 29), the plurality of three-way valves (24, 25) and the plurality of loop coupling points (26, 27, 28, 29) controlling the refrigerant loop, the warm air loop, the battery loop, and the electric drive loop to form different loop modes in order to meet the thermal management requirements of the passenger compartment, the battery (19), and the electric drive assembly (16).

The utility model relates to the technical field of building construction, and discloses a building reserved hole temporary plugging device which comprises a sealing disc, the bottom of the sealing disc is fixedly connected with a plugging pipe, the outer wall of the plugging pipe is provided with evenly-distributed containing grooves, and the inner walls of the containing grooves are fixedly connected with air bags. An intercommunication pipe is fixedly connected between the multiple air bags, air conveying grooves which are evenly distributed are formed in the sealing disc, the top of the front air bag is fixedly connected with a second one-way air core, the top of the rear air bag is fixedly connected with a first one-way air core, and sealing assemblies are arranged at the two ends of the sealing disc. According to the utility model, under the mutual cooperation of the sealing disc, the plugging pipe, the accommodating groove, the air bag, the intercommunication pipe, the air transmission groove, the one-way air core I and the one-way air core II, the plugging device can be repeatedly used and can play a role in multiple items or multiple times of use, so that the cost of frequently purchasing a new device is reduced, and meanwhile, the plugging device can be quickly mounted and removed; and the construction efficiency is improved.

The invention relates to the technical field of plastic product processing, and discloses a high-toughness plastic bag processing technology which comprises the following steps: firstly, primarily sorting recycled main raw materials, recording sources, grade classification and processing states, configuring a centralized feeding system and an intelligent proportioning program, and carrying out intelligent proportioning on the main raw materials; the mixed raw materials are injected into a five-layer co-extrusion die head or an annular die head structure, then an extrusion film body is controlled through a control system to conduct film blowing treatment on an extruded film to form film bubbles, then film blowing is conducted, the film bubbles are cooled through a 360-degree cooling air ring and an internal air core, the film obtained after film blowing is completed is pulled to a winding section through a winding system, and then the film is obtained. Before rolling, mechanical performance indexes are detected through an online monitoring instrument, and a finished film roll enters a bag making / slicing section according to order requirements. Through fine treatment and multi-layer co-extrusion process design of recycled plastics, high-proportion recycled materials are effectively applied to production of plastic bags, and the effect of remarkably improving the utilization rate of the recycled materials is achieved on the premise that the performance of finished products is not reduced.

The invention discloses an anti-resonance optical fiber used in the field of communication and human eye safety, and relates to the technical field of optical fiber communication. The optical fiber sequentially comprises an outer cladding, a first inner cladding, a second inner cladding, a left air fiber core area and a right air fiber core area from outside to inside along the radial direction of the optical fiber, wherein a plurality of first anti-resonance units are circumferentially and uniformly distributed in the first inner cladding. The left fiber core and the right fiber core work in the communication wave band and the 2-micron wave band respectively, optical signal transmission of the two wave bands is achieved, and application in the field of communication and human eye safety is achieved; the optical fiber has extremely low nonlinear coefficients in two working wavebands, which are three orders of magnitude lower than those of a common single-mode optical fiber, so that the optical fiber can obtain higher transmission power to realize long-distance transmission, and the restrictive loss is far lower than that of the existing single-mode optical fiber; meanwhile, the highest waveguide dispersion under the working wave band of the optical fiber is two orders of magnitude lower than that of a common single-mode optical fiber.

The invention discloses a spiral hollow-core armature stator of a superconducting excitation motor and an assembly method thereof, the spiral hollow-core armature stator of the superconducting excitation motor comprises a stator core and an armature winding, the armature winding is installed in the stator core, the spiral hollow-core armature stator comprises an outer insulation support frame, an inner insulation support frame and a support frame inner cylinder, a plurality of first armature winding installation grooves are spirally formed in the inner circumferential face of the outer insulation supporting frame in the circumferential direction, a plurality of second armature winding installation grooves are spirally formed in the inner circumferential face of the inner insulation supporting frame in the circumferential direction, and armature windings are installed in the first armature winding installation grooves and the second armature winding installation grooves. A plurality of first helical teeth matched with the plurality of first armature winding mounting grooves are arranged on the outer peripheral surface of the inner insulating support frame; and a plurality of second helical teeth matched with the plurality of second armature winding mounting grooves are arranged on the outer peripheral surface of the support frame inner cylinder. According to the invention, the insulation and voltage resistance of the stator is improved, and good support for the armature winding can be realized.

The invention discloses a heterogeneous three-core anti-resonance optical fiber for transmission from visible light to intermediate infrared light, and belongs to the technical field of optical fiber communication. The heterogeneous three-core anti-resonance optical fiber comprises an outer cladding layer from outside to inside along the diameter of the optical fiber, a first inner cladding layer, a second inner cladding layer and a third inner cladding layer are arranged in the outer cladding layer, and a plurality of nesting pipe assemblies with the same structure are arranged in the first inner cladding layer, the second inner cladding layer and the third inner cladding layer at equal intervals in the circumferential direction. An upper air fiber core area, a lower left hollow fiber core area and a lower right air fiber core area are defined by the nesting pipe assembly. The upper air fiber core area, the lower left air fiber core area and the lower right air fiber core area respectively work in a 4m wave band, a 2m wave band and a 1m wave band, have extremely low limiting loss in the three working wave bands, and have good bending resistance performance at the same time.

The invention discloses a heat pump type heat management system and method for an electric automobile. The heat pump type heat management system comprises a heat supply ventilation and air conditioning assembly, cooling liquid loops connected to nine different connectors of a multi-way valve and a refrigerant loop capable of conducting heat exchange with the cooling liquid loops. The cooling liquid loop comprises an electric drive loop, a heat dissipation loop, a battery loop, a coupling loop for connecting the electric drive loop and the heat dissipation loop with the multi-way valve, a first heat exchange cooling liquid loop connected with the warm air core body and the first heat exchanger, and a second heat exchange cooling liquid loop connected with the second heat exchanger; the refrigerant loop comprises a first refrigerant series loop for connecting the compressor, the first heat exchanger and the second heat exchanger in series and a second refrigerant loop for connecting the compressor, the first heat exchanger and the evaporator in series; circulating flow of various cooling liquids can be achieved by controlling communication or cut-off of all the connectors, and control and switching of various heat management can be achieved through heat exchange of the cooling liquid loop and the refrigerant loop.

The invention relates to a virtual magnetic core constructed by utilizing a vector magnetic circuit principle and an application method thereof, provides the virtual magnetic core and the application method thereof by utilizing the vector magnetic circuit principle, belongs to the field of magnetic circuit theory application, and particularly relates to magnetic circuit design of an electromagnetic device. A magnetic core (iron core) is an important component of a motor, a transformer, a reactor and other electromagnetic devices and accounts for about 50% of the total weight of the electromagnetic devices. A magnetic core (iron core) is removed from an electromagnetic device such as an air-core transformer, but the air magnetic conductivity is poor, the exciting current is large, and therefore the electromagnetic device is poor in loading capacity, large in size and limited in application range. A virtual magnetic circuit is constructed by utilizing a plurality of vector magnetic circuit elements, the magnetic conductive capability of the virtual magnetic circuit is similar to or better than that of an actual magnetic core, and a virtual magnetic core is formed. On the basis of the application method, electromagnetic devices such as transformers, reactors and motors are constructed through the virtual magnetic cores, and the weight and the size of the electromagnetic devices are expected to be remarkably reduced.

The invention discloses a vehicle thermal management system and a control method, and relates to the technical field of vehicle thermal management, the system comprises a refrigerant circulation loop, a battery circulation loop, a warm air circulation loop and an engine circulation loop; the refrigerant circulation loop is coupled with the battery circulation loop through a battery cooler; the battery circulation loop and the warm air circulation loop are coupled through a first three-way proportional valve and a first three-way pipe joint; the warm air circulation loop and the engine circulation loop are coupled through a second three-way proportional valve and a third three-way pipe connector. According to the scheme, heat management components are reduced, the cost is greatly reduced, direct coupling of the engine, the warm air high-temperature loop and the battery low-temperature loop is achieved, meanwhile, separate and independent control over the water temperature of the warm air core and the water temperature of the battery is achieved, and the risk of thermal runaway caused by overheating of the battery is effectively avoided.

The invention discloses an airtight packaging structure and a hollow-core optical fiber transmission system.The airtight packaging structure comprises a packaging shell, an air pressure adjusting device, an air pressure monitoring device and a control device, the packaging shell is provided with an air cavity, a packaging hole and a communicating hole, and the packaging hole and the communicating hole are both communicated with the air cavity; the air pressure adjusting device is provided with an air vent communicated with the communicating hole, the air pressure monitoring device is connected with the cavity wall of the air cavity so that the air pressure of the air cavity can be monitored through the air pressure monitoring device, and the air pressure monitoring device and the air pressure adjusting device are both electrically connected with the control device. The control device is used for receiving the real-time air pressure value monitored by the air pressure monitoring device and controlling the air pressure adjusting device to adjust the air pressure of the air cavity based on the real-time air pressure value. According to the airtight packaging structure, the pressure of the inner cavity of the hollow-core optical fiber can be maintained, water vapor, air and the like in the external environment are prevented from permeating into the inner cavity of the hollow-core optical fiber, and the stability of a communication system is guaranteed.

The utility model discloses a high-power flat wire vertically-wound hollow inductor which comprises a coil assembly, a mounting assembly and a connector bar, and the coil assembly is formed by spirally and stereoscopically winding a plurality of strands of hollow wires; the installation assembly comprises insulation fixing frames located at the two ends of the coil assembly, and the line bank is located on the outer sides of the two insulation fixing frames and electrically connected with the coil assembly. The coil assembly is formed by spirally and stereoscopically winding the multiple strands of hollow wires, the effective heat dissipation area of the coil can be increased by adopting the multiple strands of hollow wires, meanwhile, the size and weight of the reactor are reduced, the proximity effect can be effectively reduced by vertically winding the multiple strands of the coil, the electrical performance of a product is improved, and the coil is directly fixed through the insulating fixing frame for the coil. The manufacturing and use efficiency is improved; and the device is suitable for full-automatic equipment operation.

The invention belongs to the technical field of optical fibers, and discloses a hollow-core anti-resonance optical fiber and an optical fiber communication device. The hollow-core anti-resonance optical fiber provided by the invention comprises an outer cladding tube, an inner cladding tube structure and an air fiber core, wherein the inner cladding tube structure and the air fiber core are positioned in the outer cladding tube; the inner cladding tube structure comprises two first cladding tubes arranged along a first direction and two second cladding tubes arranged along a second direction, the first direction and the second direction are orthogonal, the first cladding tubes are of a single-ring structure, the second cladding tubes are of a nested structure, and the first cladding tubes and the second cladding tubes have different tube wall thicknesses; and the air fiber core is an air hole formed by encircling the inner cladding tube structure. The optical fiber communication device provided by the invention comprises the hollow-core anti-resonance optical fiber. According to the invention, single-polarization single-mode low-loss transmission can be supported on the premise of not introducing an additional complex structure.

The invention discloses a brushless air-core pulse generator and supercapacitor hybrid energy storage self-excitation type pulse power supply topological structure and a control method, and relates to the field of pulse power supplies. The problems that in the prior art, a storage battery is high in energy storage density, low in power density, short in large-current cycle life, low in high-voltage charging speed and high in step-up ratio, so that a step-up converter between the storage battery and a super capacitor works in a near-saturation working condition, and the charging speed and the charging linearity are seriously affected are solved. The self-excitation pulse power supply topological structure comprises a prime motor, a brushless air-core pulse generator, a self-excitation charging rectifier bridge, a pulse capacitor bank and a load. The prime motor is coaxially connected with a rotor of the brushless hollow pulse generator; the self-excitation charging rectifier bridge is connected in series with the brushless air-core pulse generator and the pulse capacitor bank; and the brushless air core pulse generator and the pulse capacitor bank discharge to a load together in a parallel connection mode. The method is also suitable for the hybrid energy storage field based on three forms of inertia, magnetic field and electric field.

The utility model discloses an R290 heat management system based on secondary loop integrated waste heat utilization, relates to the field of electric automobile heat management, and aims to solve the problems that a heat management system in the prior art is high in cost, large in heat transfer loss, incapable of coping with an extremely low temperature environment and insufficient in single-core refrigerating capacity. A six-way water valve and a seven-way water valve are combined with a three-way valve to form a heat management pipeline, the heat management pipeline exchanges heat with an R290 circulation pipeline, a water-cooling condenser and a chiller battery cooler can be fully operated, a system connecting pipeline and a fluid flow direction are flexible and controllable, the control precision is high, a cold air core body and a warm air core body can be connected in series during refrigeration by changing pipeline connection, and the refrigeration efficiency is improved. Therefore, double-core refrigeration is carried out, and the refrigeration capacity is high; by proportionally adjusting the cooling liquid flow of the two loops, accurate temperature control after liquid mixing is realized, temperature impact on the battery is avoided, and the heat exchange efficiency is higher.

The invention provides a thermal management system and a vehicle. The thermal management system comprises an electric drive and electric control loop, an air conditioner loop, a warm air loop and an engine loop. The electrically-driven and electrically-controlled loop comprises an electric component; a compressor is arranged in the air conditioner loop, and the air conditioner loop exchanges heat with the electrically-driven and electrically-controlled loop through a first heat exchanger; the warm air loop is provided with a warm air core body, the warm air core body exchanges heat with the air conditioner loop through a second heat exchanger, and heat in the electric drive and electric control loop and / or the air conditioner loop is used for heating the warm air core body; the engine loop selectively communicates with the warm air loop, and heat of the engine loop is used for heating the warm air core. According to the heat management system, the engine loop, the electric drive and electric control loop and the air conditioner loop are reasonably matched, the passenger compartment heating function of different heat sources is achieved, and therefore the requirement for reducing cost and energy consumption is met.

A clamp used in a ceramic chopper manufacturing process belongs to the technical field of clamping of small parts and comprises a chopper base, the chopper base is a square fixing plate, a plurality of through clamping holes are formed in the chopper base in the thickness direction, an air core is embedded in one end of each clamping hole and provided with a sealed tip part, and the tip part is provided with an air inlet and an air outlet. And the tip part extends into the tail end hole of the chopper to fix the chopper. The chopper fixing device is convenient to fix, and the chopper can be fixed only by inserting the chopper into a hole of the fixing base and filling an expansion structure in a control pipe at the bottom of the chopper.

The utility model discloses a novel automobile warm air side plate structure and a warm air core assembly, and belongs to the technical field of automobile air conditioners. The warm air side plate structure comprises an upper side plate and a lower side plate, the thickness of the upper side plate and the thickness of the lower side plate are both smaller than 0.8 mm, reinforcing ribs are arranged on the upper side plate and the lower side plate in the length direction of the upper side plate and the lower side plate respectively, and fin pressing ribs which are distributed at equal intervals are further arranged on the upper side plate and the lower side plate in the length direction of the upper side plate and the lower side plate respectively. The warm air core assembly comprises an upper side plate and a lower side plate which adopt the warm air side plate structure. By the adoption of the technical scheme, lightweight production of the warm air core assembly can be achieved, and on the premise that the requirements for the overall strength and rigidity of the core are met, manufacturing cost is lower, installation is more convenient and fast, and assembling efficiency is high.

The invention discloses a high-birefringence bending-resistant hollow-core anti-resonance optical fiber applied to a green light wave band, and belongs to the technical field of optical fibers. The optical fiber comprises an outer cladding layer, an inner cladding layer and an air fiber core area which are sequentially arranged from outside to inside, the outer cladding layer area is a hollow cylinder with a certain thickness; the inner cladding is of a nested cladding tube structure and comprises a round cladding tube, a first round nested tube arranged in the round cladding tube, an ice cream-shaped cladding tube consisting of two sides of an equilateral triangle and a semicircle, and a second round nested tube arranged in the ice cream-shaped cladding tube; a first nested cladding tube structure composed of the first circular nested tube and the circular cladding tube and a second nested cladding tube structure composed of the second circular nested tube and the ice cream-shaped cladding tube adopt different dielectric materials, different tube wall thicknesses and different deviation angles, so that high birefringence is introduced. The device can be applied to a green light wave band, has high birefringence and low bending loss, and is good in polarization maintaining characteristic and bending resistance.

The invention discloses an ultra-wideband heterogeneous five-core anti-resonance optical fiber for transmission from ultraviolet to intermediate infrared, and belongs to the technical field of optical fiber communication. The heterogeneous five-core anti-resonance optical fiber sequentially comprises a perfect matching layer, an outer cladding layer, a first light guide unit, a second light guide unit, a third light guide unit, a fourth light guide unit and a fifth light guide unit from outside to inside along the fiber diameter, wherein the first light guide unit, the second light guide unit, the third light guide unit, the fourth light guide unit and the fifth light guide unit are arranged in the outer cladding layer. A plurality of nesting tube assemblies and gap tube assemblies with the same or different structures are arranged in each light guide unit in the circumferential direction at equal intervals, and a central air fiber core area, a left upper air fiber core area, a right lower air fiber core area, a right upper air fiber core area and a left lower air fiber core area are defined by the assemblies and work at the wave bands of 0.15-2.0 m, 2.0-3.0 m, 3.0-4.0 m, 4.0-6.0 m and 6.0-7.0 m correspondingly. And all the components show extremely low restrictive loss, dispersion close to zero and a relatively low nonlinear coefficient.

The invention discloses a multi-resonant-layer hollow optical fiber applied to carbon dioxide gas monitoring, and relates to the technical field of optical fiber communication. The optical fiber sequentially comprises an outer cladding layer, an inner cladding layer and an air fiber core area from outside to inside in the radial direction of the optical fiber, a plurality of first nested pipe units are arranged between the outer cladding layer and the inner cladding layer, the plurality of first nested pipe units are annularly distributed at equal intervals, and the first nested pipe units are tangent to the outer cladding layer and the inner cladding layer respectively. According to the invention, efficient transmission of light with specific wavelength is realized through the optimally designed resonant structure, interaction with gas molecules is enhanced through the hollow structure, and the optical fiber has the characteristics of low loss, near-zero dispersion and bending resistance, and is suitable for monitoring carbon dioxide gas molecules. The multi-resonant structure of the optical fiber enables the optical fiber to maintain good optical transmission characteristics in a broad spectrum range, and the optical fiber is especially suitable for gas monitoring methods such as laser absorption spectrum and Raman spectrum.

The invention provides a low-loss hollow-core anti-resonance optical fiber. The low-loss hollow-core anti-resonance optical fiber comprises an outer wrapping layer, a plurality of anti-resonance units arranged in the outer wrapping layer and a fiber core area defined by the anti-resonance units. The anti-resonance units are circumferentially arranged around the central axis of the outer cladding; each anti-resonance unit comprises a nested structure unit and a support structure for providing support for the nested structure unit, one end of each support structure is connected with the nested structure unit, and the other end of each support structure is connected with the inner wall of the outer cladding. By designing the layout mode of the anti-resonance units in the air fiber core unit, the target light beam is transmitted in the fiber core area with low loss, and the transmission capacity of the hollow-core anti-resonance optical fiber is improved.

The invention provides a hollow-core anti-resonance optical fiber and application and a manufacturing method thereof. The hollow-core anti-resonance optical fiber comprises a supporting tube; the multiple first cladding tubes are attached to the inner surface of the supporting tube at intervals in the circumferential direction of the supporting tube, and the first cladding tubes are configured to be of an anti-resonance structure; the middle plate is arranged in the supporting pipe and is configured to be of a resonant structure or an anti-resonant structure; wherein the middle plate and the plurality of first cladding tubes divide the internal space of the supporting tube into two basically symmetrical air fiber core areas. When the intermediate plate is configured to be of a resonant structure, the hollow-core anti-resonant optical fiber can support an LP11 transmission mode and has the characteristic of low limiting loss; when the intermediate plate is configured as an anti-resonance structure, the hollow-core anti-resonance optical fiber can support x polarization odd mode, x polarization even mode, y polarization odd mode and y polarization even mode transmission modes, has the characteristic of high transmission capacity, and can be applied to a polarization beam splitter.

The invention discloses a variable-diameter electromagnetic heating rotary kiln system, which belongs to the technical field of rotary kiln heating, and comprises a kiln body, and an electromagnetic heating coil formed by a hollow-core spiral lead is wound on an electromagnetic heating coil rack positioned outside a charging barrel; the electromagnetic heating coil is characterized in that the electromagnetic heating coil is formed by combining a preset number of independent electromagnetic heating coil units, and each independent electromagnetic heating coil unit comprises an electromagnetic heating coil rack and an electromagnetic heating coil; the charging barrel comprises a heating tube pass and a heat preservation tube pass; the inner diameters of the charging barrels of the heating tube pass and the thermal insulation tube pass are different, and the adjacent raising plates along the axis of the thermal insulation tube pass are symmetrically arranged in a staggered manner. The rotary kiln has the beneficial effects that the inner diameter of the charging barrel of the heat preservation tube pass is larger than that of the heating tube pass, on the premise that the occupied area is not increased, the calcination time of materials in the rotary kiln is prolonged, and the calcination capacity is improved; and the lifting plate ensures that enough calcining time is reserved for the materials in the rotary kiln under the condition that the materials are turned over, so that the materials are more uniform.

The invention discloses a double-nested hollow-core anti-resonance optical fiber with an off-center structure, and relates to the technical field of optical communication. The double-nested hollow-core anti-resonance optical fiber sequentially comprises an air core, a first-stage cladding tube, a second-stage cladding tube, a third-stage cladding tube and a peripheral cladding tube from inside to outside, the first-stage cladding tube and the peripheral cladding tube are fixed in an internally tangent manner, the second-stage cladding tube and the first-stage cladding tube are fixed in an internally tangent manner, and the third-stage cladding tube and the second-stage cladding tube are fixed in an internally tangent manner; the optical fiber is of an off-center structure which is vertically symmetrical and bilaterally asymmetrical. Compared with the conventional hollow-core anti-resonance optical fiber, the hollow-core anti-resonance optical fiber with specific structure parameters provided by the invention solves the problem that the conventional hollow-core anti-resonance optical fiber cannot well solve the problem of high bending loss under the condition of extremely short bending radius; the hollow-core optical fiber has relatively low confinement loss and bending loss, and has relatively great application potential in particle sensing and micro lasers.

A dispenser is disclosed that facilitates loading of new rolls of material and the removal of empty cores. The dispenser includes a cradle roller spaced from a pair of abutment rollers. As a roll of material is dispensed, the diameter of the roll reduces causing the roll to drop from the cradle roller to a collection device. A transfer assembly pivots with the roll so that the sheet material continues to be dispensed from the dispenser without interruption. Once the roll of material drops to the collection device, a new roll of material can be loaded into the dispenser for automatic transfer to the new roll once the first roll of material has been completely depleted.

The invention relates to the field of hollow coil processing, in particular to a hollow coil winding method and device. A first fixing point and a second fixing point are preset; fixing one end of the copper wire at the first fixing point to form an initial wire; pulling the copper wire to a mandrel, driving the mandrel to rotate, simultaneously enabling the first fixing point and the second fixing point to coaxially rotate around the mandrel at the same angular velocity, and fixing the other end of the copper wire at the second fixing point after rotating for a preset number of turns to form a tail wire; and cutting off at preset cutting-off positions with the same distance from the core shaft on the starting wire and the tail wire respectively to obtain the hollow coil. According to the hollow coil winding method and device, compared with a traditional hollow coil machining method, the cutting precision of the head wire and the tail wire is guaranteed, the head wire end and the tail wire end of the coil do not need to be machined again after cutting is completed, the machining steps are simplified, the machining efficiency is improved, the consistency of the shape and performance of a product is guaranteed, and the production cost is reduced. And the product quality can be improved.

The present application relates to the field of new energy vehicle thermal management technology, especially to an integrated thermal management module and a vehicle. The integrated thermal management module comprises: a flow channel for conveying coolant is formed inside a flow dividing member; a power assembly is used to provide power for the coolant flowing in the flow channel; a switching assembly is in communication with the flow channel and comprises a first four-way valve and a second four-way valve; a warm air core inlet, a heat exchanger inlet, a heat exchanger outlet, an electric drive system inlet, an electric drive system outlet, a radiator inlet, a radiator outlet, a heater inlet, a heater outlet, a battery water pump inlet and a battery outlet are arranged on the side wall of the flow dividing member and are in communication with the flow channel. The present application has the advantages of simple structure, small size and easy installation, thereby reducing the weight of the whole vehicle, reducing the parts of the whole vehicle, reducing the cost, reducing the pressure loss of the whole vehicle system, improving the thermal efficiency of the thermal management system, making the vehicle energy-saving and comfortable, and improving the cruising range.

This invention discloses a composite hollow anti-resonant optical fiber, comprising an outer cladding layer, a doped layer, and an anti-resonant layer arranged sequentially from the outside to the inside. The anti-resonant layer includes multiple glass nested tubes evenly distributed circumferentially and tangent to the doped layer, with gaps between them. These glass nested tubes surround and form an air core. Each glass nested tube includes a circular outer nested tube and an elliptical inner nested tube located within the outer nested tube. The minor axis of the inner nested tube is arranged radially along the optical fiber, and the outer circle of the inner nested tube, away from the air core, is tangent to the inner circle of the outer nested tube, also away from the air core. This invention employs a multi-layer nested structure, optimizing the anti-resonance effect through the combination of the doped layer and the specially structured anti-resonant layer.

The application provides a control method and device, electronic equipment and storage medium, and relates to the technical field of human-computer interaction. The method comprises the following steps: firstly, in response to a temperature demand instruction input by a user, a high-voltage heater and a compressor are started in sequence; then, an in-cabin temperature, a warm air core inlet temperature and an ambient temperature collected by a sensor are acquired, and a PID control power of the high-voltage heater and a PID control rotating speed of the compressor are determined according to an air conditioner target temperature, the in-cabin temperature and the warm air core inlet temperature; finally, the operating power of the high-voltage heater is increased from an initial operating power to the PID control power, and the operating rotating speed of the compressor is increased from an initial operating rotating speed to the PID control rotating speed. In the application, the operating power control of the high-voltage heater and the rotating speed control of the compressor are automatically adjusted in real time by starting the high-voltage heater and the compressor in sequence, so that the vehicle-mounted heat pump air conditioning system can consider both the temperature control timeliness and the energy saving during operation.