262 results about "Air core" patented technology

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 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 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 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 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.

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 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 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.

The invention relates to an R290 electric vehicle thermal management system and a ten-way water valve and a controllable proportional four-way water valve thereof, and belongs to the field of electric vehicle thermal management. The system comprises a refrigerant loop and a cooling liquid loop. The refrigerant loop comprises an enhanced vapor injection compressor, a first refrigerant-water heat exchanger, a second refrigerant-water heat exchanger, a first electronic expansion valve, a second electronic expansion valve and a flash evaporator. The cooling liquid loop comprises a first refrigerant-water heat exchanger, a second refrigerant-water heat exchanger, a warm air core body, a cold air core body, a heat dissipation water tank, a ten-way water valve, a proportion-controllable four-way water valve, a four-way water valve, first to fourth electronic water pumps, an expansion kettle, a water heating positive temperature coefficient heater, a battery pack and a driving motor. The two loops exchange heat through the refrigerant-water heat exchangers. The ten-way water valve and the controllable-proportion four-way water valve comprise an upper cavity, a lower cavity and a motor. The invention aims to solve the problems of high refrigerant charge, high leakage risk, complexity of multifunctional heat management and the like in an automobile R290 heat pump system, and the safety and the environmental protection property of the system are improved.

The invention discloses a thermal management system and a vehicle, and relates to the field of thermal management. The heat management system comprises a cooling liquid side loop and a refrigerant side loop. The cooling liquid side loop is composed of an eight-way valve and four loops. The first loop comprises a radiator and an integrated electric control heat exchanger. The second loop comprises a battery heat exchange module; the third loop is connected with the warm air core body; the fourth loop is connected with the cold air core. The refrigerant side loop comprises a compressor, a condenser, an evaporator and a throttling element. The condenser and the evaporator are connected with the third loop and the fourth loop of the cooling liquid side loop through a first heat exchange channel and a second heat exchange channel respectively. In addition, an eight-way valve, a compressor and a controller device of a throttling element are arranged in the integrated electric control heat exchanger. According to the thermal management system, flexible switching of a plurality of loops can be achieved, and efficient and flexible management of the thermal load of the vehicle is achieved.

The invention discloses a bipolar direct-current excited oscillatory wave voltage generation circuit and method, and belongs to the technical field of electrical equipment tests.The oscillatory wave voltage generation circuit comprises a high-voltage direct-current power supply, a protection resistor RS, a high-voltage relay K1, a high-voltage switch S1, a high-voltage switch S2 and an air core inductor L; the cathode of the high-voltage direct-current power supply is grounded, the anode is connected with one end of the high-voltage relay K1 through the protective resistor RS, the other end of the high-voltage relay K1 is connected with the first end of the switch branch and the first end of the air-core inductor L, the second end of the air-core inductor L is connected with the first end of the tested cable C, and the second end of the switch branch and the second end of the tested cable C are grounded; the switch branch comprises a high-voltage switch S1 and a high-voltage switch S2 which are connected in series; the high-voltage switch S1 and the high-voltage switch S2 are high-voltage semiconductor switches connected in parallel with a freewheeling diode; and the direction of the fly-wheel diode of the high-voltage switch S1 is opposite to that of the fly-wheel diode of the high-voltage switch S2. The problem that in the prior art, oscillatory wave voltage may damage cable insulation is solved.

The invention relates to the technical field of vehicles, and discloses an HVAC assembly for a vehicle and the vehicle. The HVAC assembly comprises an air conditioning box, a first flow channel and a warm air core body; the air conditioner box is internally provided with an air duct and comprises a first side wall. The first flow channel is arranged on the first side wall, the first flow channel is used for circulating cooling liquid, and the first flow channel is provided with a first end and a second end in the length direction of the first flow channel; the warm air core body is arranged in the air conditioner box and at least partially located in the air channel, an inlet of the warm air core body communicates with the first end of the first flow channel, and an outlet of the warm air core body communicates with the second end of the first flow channel. According to the HVAC assembly, the integration degree is improved.

The invention discloses a building drainage system pressure stabilizing device and method based on S-shaped center deviation design, and belongs to the technical field of building drainage. In order to solve the problem that pressure fluctuation is large when a traditional S-shaped pipeline drains water, the device is composed of an S-shaped pipe, a thickened connector, an annular clamping groove, a sealing ring, a straight pipe cavity, a bent pipe cavity, a spiral blade and a flow guide plate. The S-shaped pipe is made of a high-density polyethylene material, and the inner wall of the S-shaped pipe is coated with a silver ion nano antibacterial coating; the inner wall is provided with an annular clamping groove which is clamped with an ethylene propylene diene monomer sealing ring; the inner wall of the straight pipe cavity is provided with annular array spiral blades, and the inner wall of the bent pipe cavity is provided with a flow guide plate matched with the bending degree. Water flow forms spiral wall-attached flow through the spiral blades, the spiral wall-attached flow and the central air core are directionally guided through the guide plates, the pipeline pressure is stabilized, smooth drainage is guaranteed, and the blocking risk is reduced.

The utility model relates to a connector, in particular to a pneumatic-electric mixed connector. Comprising a base, a gas core and a plurality of contact pins, the air core is installed in the middle of the base in a sealed mode, and the two ends of the air core extend out of the base respectively. A plurality of stepped through holes with the same number as the contact pins are formed in the end face of one side of the base around the air core; the contact pin comprises a head part, an insertion part and a tail part which are connected in sequence; the head part extends into the base from the large section of the stepped through hole and extends out of the base from the small section of the stepped through hole; conical barbs are arranged on the head part, and the head part is in interference fit with the inner wall of the small section of the stepped through hole through the conical barbs; the insertion part is arranged in the large section of the stepped through hole, and a first sealing ring is arranged between the insertion part and the large section of the stepped through hole. According to the utility model, the pins are installed around the gas core, so that the size of the connector can be reduced to a certain extent, and integration and miniaturization of components can be realized.

The utility model discloses an electric vehicle thermal management system and a vehicle. The electric vehicle thermal management system comprises a refrigerant circulation loop and a cooling liquid circulation loop which share a water-cooling condenser and a cooler. The cooling liquid circulation loop further comprises a battery pack, a motor assembly, a radiator, a water heater, a cold air core body, a warm air core body, a first three-way proportional valve, a second three-way proportional valve and a nine-way valve. A first port of the nine-way valve is connected with the battery pack, a second port is connected with the cold air core and the cooler, a third port is connected with the warm air core and the water-cooling condenser, a fourth port is connected with the first three-way proportional valve, a fifth port is connected with the second three-way proportional valve, and a sixth port and a seventh port are connected with the two ends of the radiator respectively. The sixth port and the eighth port are connected with the two ends of the motor assembly respectively, and the ninth port is connected with the battery pack. The flow path of cooling liquid is switched through the nine-way valve, the first three-way proportional valve and the second three-way proportional valve, different function modes can be achieved, the number of system valves is small, the integration degree is high, and the system is suitable for combustible refrigerants.

The invention discloses a hollow-core anti-resonance optical fiber design method and system for a femtosecond laser stone crusher, and relates to the technical field of medical laser instruments. The method comprises the steps that an anti-resonance transmission unit is constructed, the anti-resonance transmission unit is composed of an air core and anti-resonance quartz cladding tubes periodically arranged on the periphery, the cladding tubes form an anti-resonance transmission band gap with a specific wavelength through precisely designed wall thickness and spacing, and the air core serves as a main transmission channel; a water-cooling temperature control unit is integrated, the water-cooling temperature control unit comprises a spiral or snakelike micro-channel structure integrated in an outer cladding of the anti-resonance transmission unit, the outer cladding is made of a biocompatible high polymer material, a micro-channel and an optical fiber are axially arranged at a preset angle, and a forced convection heat dissipation path is formed by injecting a cooling medium. By optimizing the anti-resonance transmission unit and the water-cooling temperature control unit, stable laser transmission, efficient thermal management and reliability under long-time high-power laser operation are realized.

The application belongs to the field of optical fiber cables, and specifically discloses a production method of a hollow-core fiber hybrid cable, a product and equipment thereof, and the production method comprises the following steps: S1, connecting a pressure filling device to the exposed end of a hollow-core fiber wound on a fiber reel, keeping the pressure of the pressure filling device within a set pressure range until the air pressure in the hollow core of the hollow-core fiber is balanced, ending the pressure filling, and then plugging the exposed end of the hollow-core fiber to obtain a pressure-filled hollow-core fiber; and S2, placing the fiber reel of the pressure-filled hollow-core fiber on a wire rack with a heating and heat preservation function, and releasing the pressure-filled hollow-core fiber into an extruder to perform cabling. The application further provides the above hollow-core fiber hybrid cable production equipment. The method and equipment can solve the pollution problem of the air core of the hollow-core fiber hybrid cable and improve the production quality of the hollow-core fiber.

The invention provides a coil unit. The coil unit includes a coil and a magnetic resin member (a back member and an inner member). The magnetic resin members (a back member and an inner member) are disposed on the rear side of the coil when viewed from the opposite side when the power transmission side and the power reception side face each other. A through hole penetrating in the axial direction is formed in the plate-shaped back-side member, and the axial direction is along the central axis of the coil. A frame-shaped wall portion (a power receiving side wall portion or a power transmitting side wall portion) of the inner member protrudes in an axial direction from a peripheral edge portion of the through hole and is disposed in a hollow core region of the coil. A cover part (a power receiving side cover part or a power transmitting side cover part) of the inner member opens and closes a protruding side opening end of a wall part (a power receiving side wall part or a power transmitting side wall part).

The utility model provides an electric freight vehicle with temperature adjusting equipment, the temperature adjusting equipment comprises a compressor, an evaporator and a condenser which are connected through a refrigerant pipeline, and also comprises a PTC (Positive Temperature Coefficient) device, a warm air core and a pump which are connected through a coolant pipeline, the compressor is a compressor with single refrigerating capacity of more than 10KW, and the evaporator is a single compressor with single refrigerating capacity of more than 10KW. The evaporators comprise the first evaporator and the second evaporator, the first evaporator is in straight-through connection with the compressor and the condenser, the second evaporator is connected with the compressor and the condenser through an electromagnetic valve, and the electromagnetic valve is arranged in the mode that refrigerants only pass through the first evaporator or simultaneously pass through the first evaporator and the second evaporator in a controlled mode. The first evaporator and the second evaporator are arranged in a cab of the electric freight vehicle. According to the electric freight vehicle provided by the utility model, the temperature can be quickly adjusted under the extreme temperature condition.

The invention provides a superconducting motor integrated thermal control system based on a special-shaped heat pipe and graphite foam, which comprises a special-shaped heat pipe assembly, a graphite foam heat expansion tile assembly and an air core stator, and is characterized in that the air core stator comprises a shell and an armature winding assembly, bionic fins are formed on the outer wall of the shell, and an enhancement layer is arranged on the inner wall of the shell; the graphite foam heat expansion tile assembly is embedded in the shell; the special-shaped heat pipe assembly comprises an evaporation end and a condensation end, the condensation end is embedded in the graphite foam heat expansion tile assembly, the evaporation end penetrates through the enhancement layer from the graphite foam heat expansion tile assembly and extends to the position between the two adjacent armature windings, and face-to-face contact is formed between the special-shaped heat pipe assembly and the armature winding assembly. The special-shaped heat pipe is in full contact with a heat generation hot spot of the armature winding, heat is quickly transferred to the graphite foam heat expansion tile through two-phase evaporative cooling, the graphite foam heat expansion tile expands heat in the circumferential direction, and efficient heat exchange is achieved by means of the low-resistance air flue and the bionic strengthening structure.