1906 results about "Heating film" patented technology

The invention relates to the technical field of automobile cup holder temperature control methods, and discloses an automobile cup holder temperature regulation control method based on a microcontroller. According to the method, real-time temperature data and environment parameters of a target container are collected, and an initial temperature parameter set containing a container surface temperature distribution curve and an environment heat exchange coefficient sequence is generated; then, establishing a first adjusting model containing a mapping relation between surface temperature change and refrigeration power according to the container surface temperature distribution curve, and establishing a second adjusting model containing environment heat interference and a heating power compensation rule according to the environment heat exchange coefficient sequence; during cup stand temperature control, based on real-time temperature difference fluctuation and container material heat conduction characteristic data, a target model is activated to generate a dynamic power instruction, finally, the instruction is input into a semiconductor temperature control unit of the cup stand, and the current gradient of a refrigeration sheet or the voltage distribution of a heating film is adjusted. The temperature of the automobile cup holder can be accurately and intelligently adjusted, and the user experience and the comfort level of an automobile cabin are improved.

The invention relates to a power battery specific heat capacity quasi-steady-state measurement method, which comprises the following steps of: respectively arranging heating films on two large surfaces of a power battery, and uniformly and symmetrically arranging a plurality of thermocouples on the heating film on one large surface along the diagonal direction of the power battery, thermocouples with the same number are reversely and symmetrically arranged on the heating film on the surface of the other large surface along the direction of the other crossed diagonal line of the power battery, and an insulating material is wrapped outside the power battery; placing the processed power battery in a temperature control box, connecting the temperature control box with external test equipment through a connecting line, and adjusting and controlling the temperature control box to keep the initial temperature constant; the temperature rise rate is calibrated through heat loss calibration in the heating temperature rise stage and the slow cooling stage, and the specific heat capacity of the power battery is calculated based on the calibrated temperature rise rate. The specific heat capacity of the power battery can be obtained without extra heat loss calibration test, the method is suitable for stylized data algorithm processing, the data processing time is short, and the test result is accurate.

The invention belongs to the technical field of integrated circuit board manufacturing, and particularly relates to a pressing device for an integrated circuit board, which comprises a cabinet body and a protective cover arranged above the cabinet body, a lower pressing plate and an upper pressing plate which are used for pressing the integrated circuit board are mounted in the protective cover, the lower pressing plate is arranged in a square frame fixedly arranged on the top surface of the cabinet body, and the upper pressing plate is connected with a power driving unit arranged in the protective cover; a plurality of heat conduction parts are mounted on the corresponding surfaces of the upper pressing plate and the lower pressing plate in an array manner, and a graphene heating film is mounted in each heat conduction part; a cavity is formed in the upper pressing plate, multiple sets of pressure compensation mechanisms are installed in the cavity in an array mode, and each set of pressure compensation mechanism corresponds to each heat conduction part. According to the invention, stable and high-quality press-fit forming operation of the integrated circuit board can be carried out between the upper pressing plate and the lower pressing plate which independently control the temperature and uniformly apply pressure, so that the press-fit forming quality and the press-fit forming yield of the integrated circuit board can be improved.

The invention relates to the technical field of optical lenses, and discloses a heating, deicing and demisting structure of an optical lens, which comprises a lens frame, a deicing and demisting mechanism is arranged in the lens frame, a lens bracket is fixedly mounted on the inner side of a limiting bracket, and a temperature sensor and a humidity sensor are fixedly mounted on the left side of the lens bracket. A transparent graphene heating film is mounted on the outer surface of the lens, an electrode is fixedly mounted in the transparent graphene heating film, and an annular heating element is clamped to the outer surface of the lens. According to the heating, deicing and demisting structure of the optical lens and the use method, when humidity data reaches or exceeds a set threshold value and the temperature is higher than 0 DEG C, the control module sends an electrifying instruction to the transparent graphene heating film, heat is uniformly transmitted to the surface of the lens, and mist is dispersed without leaving scratches; the non-contact heating demisting method not only effectively protects the optical performance of the lens, but also improves the reliability and service life of equipment.

The invention provides an electric heating fabric and a preparation method and application thereof.The electric heating fabric comprises fiber cloth, an electric heating film is arranged on the surface of one side or two sides of the fiber cloth, the electric heating film has a wave-transparent function and is formed by curing conductive slurry, and the conductive slurry comprises resin, a dispersing agent, a carbon material, a functional compound and a solvent; the functional compound comprises a nitrogen-containing compound and / or an acidic compound; the specific functional compound is added into the preparation raw materials of the electric heating film, and the interface bonding performance between the electric heating film and the composite material is effectively improved by utilizing the cross-linking reaction between the functional compound and the resin in the composite material; therefore, the long-term stability and reliability of the obtained electric heating fabric and the integrated composite material thereof in an extreme use environment can be ensured, and the electric heating fabric has a wave-transparent function and is suitable for being applied to the surface of an aircraft.

The utility model discloses a main-grid-free film-coated photovoltaic module. A film-coated battery string group comprises a plurality of main-grid-free battery pieces, a welding strip and a bearing film, the plurality of main-grid-free battery pieces are arranged on the same layer at intervals in series; the welding strip crosses two adjacent battery pieces, one side of the welding strip is connected to the front side of one battery piece, the other side of the welding strip is connected to the back side of the other adjacent battery piece, and the two welding strips in the front-back direction in the series connection direction of the battery pieces can be in lap joint in parallel; a bus bar is arranged at the end part of the film-coated battery string group; and the two bearing films are pressed on the two opposite sides of the battery piece through low-temperature heating. According to the utility model, series welding is replaced by a low-temperature heating film coating mode, so that 30%-40% of silver consumption at a battery end can be reduced by canceling a main grid line of a battery piece; the stress-free connection of the low-temperature bearing film is more suitable for the development of flaking, and the battery cost is greatly reduced through less silicon and less silver.

The invention discloses an intelligent temperature control wind turbine generator blade electric heating deicing system and method, and belongs to the technical field of wind power generation. The system comprises an electric heating film arranged on a blade, a thermal infrared imager and a plurality of sensors, the electric heating film, the thermal infrared imager and the plurality of sensors are all connected with an intelligent control unit; the intelligent control unit is connected with an unmanned aerial vehicle carrying a laser radar and is used for regularly scanning ice layer distribution on the surface of the blade; and the electric heating film adopts zone control. The method comprises the following steps: acquiring environmental parameters and blade state monitoring data, and starting a deicing system; the method comprises the following steps: collecting deicing data from a deicing system in real time and preprocessing the deicing data to obtain preprocessed deicing data; establishing an intelligent temperature control model based on the environmental parameters and the blade state monitoring data; and inputting the pre-processed deicing data into an intelligent temperature control model, calculating to obtain dynamic adjustment data of the heating power, and transmitting the dynamic adjustment data to a deicing system for deicing.

The invention discloses a high-safety battery heat management system with high-temperature heat dissipation, low-temperature heating and heat spread suppression considered. The high-safety battery heat management system comprises a power battery pack and a heat management system, the power battery pack comprises a battery pack consisting of a plurality of square battery cells and a large-scale battery module formed by connecting the battery packs in parallel; a plurality of battery cells are connected in series in each battery pack, the battery packs are vertically arranged, the large-scale battery module is formed by horizontally arranging the battery packs, and each battery pack comprises equal or unequal battery cells; the thermal management system comprises a flexible flame-retardant phase-change material, a liquid cooling plate, a heating film and aerogel; a part of side surfaces between the battery cells are uniformly filled with a flexible flame-retardant phase-change material, the other side surfaces are wrapped by aerogel, the bottoms of the battery cells are connected with an integrated unit of a heating film and a liquid cooling plate, and the heating film is positioned at the positions of the battery cells for heating; the battery pack is cooled through water cooling and phase change latent heat; heating the battery pack through a heating film at the bottom of the battery cell; and the thermal runaway of the battery is inhibited through the combination of the flexible flame-retardant phase-change material and the aerogel.

The invention discloses a preparation method and application of a coating wool fabric with a far infrared health-care function. The preparation method comprises the following steps: dissolving waste wool by adopting an ionic liquid method to extract regenerated keratin powder, and doping the regenerated keratin powder, chitosan quaternary ammonium salt and functional particles into a membrane substrate material by adopting a blending modification method to prepare a functional coating material; and in combination with plasma pretreatment, coating the surface of the wool fabric with the functional coating material, and further performing crosslinking modification to obtain the far-infrared health-care functional coating wool fabric. According to the method, the problems that the wool fabric subjected to resin coating modification is hard in hand feeling and damaged in style are effectively solved, waste keratin resources are fully utilized, and secondary utilization of the resources is achieved; the electrical heating textile is prepared by using the excellent thermal conductivity and high conductivity of graphene and carbon nanotubes, and more far infrared rays are radiated along with the temperature rise of the graphene heating film.

The utility model discloses a heating seat ring and intelligent cover plate, the heating seat ring comprises a seat ring upper shell, a heating film and a seat ring lower shell, the seat ring upper shell is provided with a cavity enclosed by side plates, the cavity is provided with an upper opening and a side opening, a film body of the heating film is provided with a protruding part, the protruding part extends into the cavity through the side opening, and the heating film is arranged in the cavity. A sealing plate used for sealing the side opening is arranged on the side opening, and a temperature fuse is arranged in the cavity and tightly attached to the protruding part. The protruding part of the heating film is arranged in the cavity, the temperature fuse is installed after injection molding is completed, the protruding part of the heating film is communicated with the heating wire of the whole heating film, and therefore the temperature fuse can effectively sense the heating temperature of the heating film in the seat ring, and the situation that the temperature fuse is fused due to the high temperature of secondary injection molding can be avoided; the temperature of the heating film can be effectively sensed, the heating film is intact and not damaged during injection molding, and potential safety hazards are avoided.

The invention discloses an energy-storage heat-conducting structural adhesive testing device and method, and belongs to the technical field of material thermal performance test.The energy-storage heat-conducting structural adhesive testing device comprises a bearing plate arranged on a pipeline stand column and a plurality of testing sets located on the bearing plate, and each testing set comprises a master control box, a pressure sensing assembly, a heating assembly and a guiding assembly; the pressure sensing assembly can perform intelligent pressure control on a to-be-tested sample, heat-conducting property deviation under different pressures is eliminated, the heating assembly adopts a graphene heating film to realize an automatic frequency modulation function, so that the heating temperature is uniform and constant, and the guiding assembly comprises a pressing plate, a guiding column, an electromagnet and a strong magnet which are located above the heating assembly. According to the invention, axial and planar heat conduction performance tests can be carried out on the to-be-tested sample, simultaneous multi-station tests are also realized, the accuracy of comparison tests under the same working condition is ensured, and the test precision and the working stability of the heat conduction performance of the to-be-tested sample are improved.

The invention discloses a graphene heating system for an automobile rearview mirror and a heating method of the graphene heating system, and belongs to the technical field of automobile accessories. The system comprises an acquisition unit, a control unit, a graphene heating film and a positioning film, the graphene heating film is fixed on a mirror surface of a rearview mirror lens, the positioning film is attached to the graphene heating film, and the control unit is arranged on the back surface of the lens and connected with other components. A plurality of independently controlled heating areas are arranged on the graphene heating film, corresponding positioning areas are arranged on the positioning film, and the positioning areas and the heating areas with the same serial number are overlapped in position. The system judges whether the rearview mirror meets the fogging condition or not by collecting information such as environment temperature and humidity, weather and position, can accurately position the fogging area, and pertinently controls the corresponding heating area to conduct heating and defogging. According to the invention, accurate identification and directional heating of the fogging area of the rearview mirror are realized, the demisting efficiency is improved, and the energy consumption is reduced.

The invention discloses a radar-wave-transparent light-emitting vehicle logo lamp, and relates to the field of vehicle lamps. The radar-wave-transparent light-emitting vehicle logo lamp comprises a base, an outer face cover connected to the top of the base, a circuit board fixed between the base and the outer face cover, a light guide plate fixed between the circuit board and the outer face cover and a heating film connected to the surface of the side, away from the base, of the outer face cover. The middle of the base protrudes upwards to form a radar wave-transparent area and a containing groove located in the bottom face of the radar wave-transparent area, and the containing groove is used for containing a millimeter wave radar sensor for emitting radar. The circuit board is provided with a first opening for a radar wave-transparent area to pass through and a plurality of LED lamps arranged at intervals in the circumferential direction. The top face and the bottom face of the light guide plate are attached to the outer face cover and the radar wave-transparent area respectively, and the surface of the side, away from the base, of the light guide plate is provided with a vehicle logo. According to the light-emitting vehicle logo lamp capable of transmitting the radar waves, the radar waves can pass through the light-emitting vehicle logo lamp for detection while the vehicle logo identification is lightened, the influence on radar wave detection is reduced to the maximum extent, and meanwhile the radar wave detection effect can be prevented from being influenced by ice and snow.

The invention provides a battery heating control method and system and a vehicle, relates to the technical field of vehicle control, and is used for solving the problem of non-uniform temperature of battery modules in the related art. The method comprises a plurality of battery modules, a plurality of heating films arranged at the bottoms of the battery modules, a plurality of heating control loops and a battery management module; the heating control loop is used for controlling the heating film to heat the battery module; the battery management module is used for determining a battery module to be subjected to temperature regulation based on the temperature distribution condition of the plurality of battery modules, and the battery module to be subjected to temperature regulation comprises one or more battery modules; and the control module is also used for controlling the target heating control loop to adjust the output power of a target heating film corresponding to the battery module to be subjected to temperature adjustment, and the target heating control loop is a heating control loop corresponding to the target heating film, so that the temperature distribution of the battery module can be more uniform through the technical scheme.

The utility model relates to an eye hot compress treatment device which comprises a supporting frame, and the supporting frame is provided with an arc-shaped part matched with the outline of the head and ear hanging parts used for being hung on ears. The two eye hot compress pieces are arranged at the left end and the right end of the front side of the supporting frame respectively, and each eye hot compress piece comprises a heating film; the device further comprises a control host, and the heating film is electrically connected with the control host. The portable earphone is simple in overall structure, small and exquisite in size, light in weight, convenient to wear and high in adaptability, and compared with a traditional structure, the portable earphone greatly improves portability and experience of a user.

An improved warming tray is provided, and relates to the technical field of waring trays. The improved warming tray includes an integrally formed flexible housing and a locking structure arranged at an edge of the flexible housing; the locking structure is configured to lock a rolled state of the improved warming tray and prevent an edge of the flexible housing from being upwarped; at least one end of the flexible housing has an opening formed into a bag-shaped structure; a heating film is detachably arranged in the flexible housing; and the heating film is put into the flexible housing or taken out of the flexible housing through the opening. By designing the heating film that is detachably mounted in the integrally formed flexible housing, the heating film can be taken out of the integrally formed flexible housing when damaged.

The utility model discloses a light-weight temperature-controllable battery thermal management system, which comprises batteries, a composite phase-change material, a micro-channel, an interface phase-change material and a heating film, wherein the batteries are connected in series and in parallel to form a battery module; the battery modules are arranged in a staggered manner and are honeycomb-shaped; the composite phase change material wraps the peripheral surface of the battery and is in direct contact with the battery; the micro-channels are longitudinally arranged on the peripheral surface of the composite phase-change material in a layered manner, each micro-channel is in a honeycomb grid shape and surrounds each battery, a water inlet is formed in the edge of one end of each micro-channel, a water outlet is formed in the edge of the other end of each micro-channel, and the vertically adjacent micro-channels are connected through a supporting frame body; the interface phase-change material covers the battery tab, and a heating film is fixed on the other surface of the interface phase-change material; the power battery is simple in structure, meets high safety and convenience of power battery design, highlights lightweight design in the power battery design, reduces system construction cost, has double functions of high-temperature heat dissipation and low-temperature heating, and has wide application space.

The invention relates to a cover plate with graphene heating films, and belongs to the technical field of cover plates, the cover plate comprises a transparent cover plate body and two graphene heating films, the two graphene heating films are arranged on the lower side surface of the transparent cover plate body, and a visible area is formed between the two graphene heating films. Through the arrangement of the graphene heating film, when mist or condensation is attached to the inner side face of the transparent cover plate body, the graphene heating film can generate a large amount of heat, so that the inner side face of the transparent cover plate body is rapidly heated, water vapor on the inner side face of the transparent cover plate body is evaporated, and the definition of the transparent cover plate body is guaranteed; and the observation effect on the internal condition of the cable trench is improved.

The invention discloses an electromagnetic shielding multifunctional composite film of an embedded metal mesh and a preparation method of the electromagnetic shielding multifunctional composite film, and belongs to the technical field of optical antireflection films. The high-refractive-index conductive film is formed by alternating a base material, a metal mesh, a high-refractive-index conductive film layer and a low-refractive-index film layer, the metal mesh is embedded in the base material, the high-refractive-index conductive film layer and the low-refractive-index film layer are sequentially and alternately arranged above the base material, the outermost layer is the high-refractive-index conductive film layer, the low-refractive-index film layer is subjected to graphical processing, and the high-refractive-index conductive film layer and the low-refractive-index film layer are sequentially and alternately arranged on the base material. The projection area of the low-refractive-index film layer is smaller than that of the high-refractive-index conductive film layers, and the multiple high-refractive-index conductive film layers are communicated outside the low-refractive-index film layer; the metal mesh embedded structure and the material selection of the high-refractive-index conductive film layer and the low-refractive-index film layer increase the mechanical strength of the composite film, have a protection function, can be used as an electric heating film without additional electrodes, and enable the composite film to have a better shielding effect through the parallel structure and the microwave resonant cavity structure.

The utility model provides a heat management device and battery pack, the heat management device includes at least one support member and at least one heating film, each support member is suitable for cooling the corresponding battery cell row, each heating film is suitable for heating the corresponding battery cell row, each heating film is connected to the corresponding support member, the shape of the heating film is matched with the shape of the support member, and the shape of the heating film is matched with the shape of the support member. Therefore, the heating film can be stably attached to the coiled pipe.

The utility model provides an intelligent snow and ice melting system for a steel structure roof. Comprising an intelligent control system (1), a snow melting and deicing system (2), an environment monitoring system (3), a first connecting line (4) and a second connecting line (5), the environment monitoring system acquires the roof state and transmits a signal to the intelligent control system, the intelligent control system judges whether to start the snow and ice melting system or not, and heating is started when the temperature reaches the lower limit value and the accumulated snow or ice thickness reaches the upper limit value. Stopping heating when the temperature reaches an upper limit value and the thickness of accumulated snow or ice reaches a lower limit value; after the snow and ice melting system is started for heating, the heating power of the adjustable infrared heating film is changed along with the change of the environment state of the roof, the heating power is reduced when the outdoor temperature is high and the snow body thickness and the ice body thickness are small, and the heating power is increased when the outdoor temperature is low and the snow body thickness and the ice body thickness are large. And the most ideal snow melting and deicing effect can be achieved with the minimum power consumption.

The invention discloses an mK-level ultra-stable constant-temperature device and method combining active and passive temperature control, belongs to the technical field of aerospace, and aims to solve the problem that the constant-temperature stability of a constant-temperature system in the field of spacecrafts cannot reach the mK level. According to the scheme, an aluminum foil shell wraps the outer surface of a heat insulation structure, and a constant-temperature structure is arranged in a cube groove in the dead center of the heat insulation structure; the constant-temperature structure is a solid aluminum alloy cube block with a groove reserved in the middle, the outer surface of the constant-temperature structure is covered with a heating film, a temperature measurement I-path detection head of the high-precision thermodetector is arranged in the groove of the constant-temperature structure and used for detecting the real-time temperature of the constant-temperature structure, and a temperature measurement II-path detection head of the high-precision thermodetector is used for detecting the environment temperature. The real-time temperature and the environment temperature of the constant-temperature structure are simultaneously sent to the constant-temperature control circuit, and the constant-temperature structure calculates a corresponding voltage value to drive the heating film to carry out heating temperature control on the constant-temperature structure, so that the temperature of the constant-temperature structure reaches and is stabilized at the target temperature.

The invention discloses a preparation method of a high-heat-efficiency polyurethane heating film based on generative adversarial network optimization. The preparation method comprises the following steps: S1, screening and characterizing a polyurethane base material, a conductive filler and an interface enhancer; s2, generating an initial data set based on a cross-domain mapping rule; s3, constructing a cross-domain attribute migration generative adversarial network, and outputting an optimized formula parameter set; s4, generating an optimal material formula in combination with a dynamic attribute weight adjustment mechanism; s5, preparing a homogeneous mixture through ultrasonic dispersion and shear stirring technologies; s6, optimizing a channel structure by utilizing a collaborative functional material nano-channel reconstruction module and combining a dynamic interface self-assembly technology to generate a to-be-formed film; s7, the film to be formed is tested, and the material formula and the channel structure are optimized; and S8, forming of the thin film is completed through a coating and film forming process, and finally the optimized polyurethane heating film is prepared. By means of the generative adversarial network optimization technology, efficient preparation of the polyurethane heating film is achieved.

The utility model discloses a battery and relates to the technical field of energy storage equipment, the battery comprises a battery cell and a heating film attached to one side of the battery cell, one end of the heating film is provided with a bending lug, the bending lug is connected with a temperature protector, and the temperature protector is attached to one side, far away from the heating film, of the battery cell; the temperature protector controls the heating state of the heating film. The bending lugs are arranged, so that the structure is simpler and more compact, the improvement cost is reduced, the temperature protector can be tightly attached to the battery core on the premise of being far away from the heating film, the influence of the heating temperature of the heating film on the temperature protector is reduced, and the control precision and the reliability of the temperature protector are improved. In addition, when the heating film heats the battery cell to the set temperature, the temperature protector is disconnected, and the heating film stops heating, so that the risk of failure of the battery cell caused by too high temperature is prevented, the failure rate can be reduced, and the reliability of the battery is improved. Therefore, the battery designed by the utility model can simultaneously meet the improvement requirements of high reliability and low cost.

The utility model relates to the technical field of batteries, and discloses a heating film assembly and a battery pack, the heating film assembly is used for heating a battery unit comprising a plurality of batteries arranged in sequence, and the heating film assembly comprises a film body, a heating wire and a memory alloy skeleton. The membrane body comprises two membrane sheets, and the two membrane sheets are attached to each other. And the heating wire is arranged between the two membranes. The memory alloy framework is fixedly arranged between the two membranes, the memory alloy framework is suitable for generating deformation under the condition of heating, and the deformation can enable the membrane body to tend to be attached to the battery unit. The memory alloy framework can be straightened again through high temperature generated by dry burning, so that the heating area separated from the battery is tightly attached to the side face of the battery under the action of pulling force, the effects of reducing the dry burning temperature and preventing dry burning are achieved, and dry burning caused by failure of an adhesive layer is avoided.

The invention discloses a fan blade detecting and deicing system and method. The fan blade detecting and deicing system comprises a detecting unit, a deicing unit and a control unit. The detection unit comprises an icing detection assembly, an icing thickness detector and a temperature sensor are arranged in the icing detection assembly, the icing thickness detector detects icing thickness data of the blade surface in real time, and the temperature sensor detects temperature data of the fan blade surface in real time; the deicing unit comprises an electric heating film which is at least laid on the front edge of the blade in the length direction of the blade. And the control unit comprehensively analyzes the icing thickness and temperature change condition corresponding to the whole blade according to the icing thickness data and temperature data of the blade surface, and independently triggers and controls the heating state of each blade deicing unit based on the comprehensive analysis result. According to the fan blade detecting and deicing system and method, the precise monitoring function, the intelligent deicing strategy and stable and safe operation are integrated, and the wide application and popularization value is achieved.

The invention discloses a control circuit and method for preventing battery heating from being out of control and a storage medium. One end of the control circuit is connected with the positive electrode of a battery, and the other end of the control circuit is sequentially connected with a main relay, a controllable fuse, a heating relay, a digital potentiometer, a heating film and a diverter in series to be connected to the negative electrode of the battery; the battery management system BMS is connected with the temperature sensing array, the main relay, the controllable fuse, the heating relay, the digital potentiometer and the shunt; the temperature sensing array is arranged near the battery; the battery management system BMS is set to control the main relay and the heating relay to be closed and control the circuit to be switched on; when the battery temperature reaches a threshold value, the digital potentiometer is controlled to increase the resistance value, so that the heating film reaches the safe heating power density; or the heating relay and / or the main relay are / is controlled to be switched off; or the controllable fuse is controlled to be fused; according to the invention, through dynamic threshold grading protection, multi-parameter collaborative fusing and distributed temperature sensing technologies, rapid blocking of abnormal temperature rise and active prevention of thermal runaway can be realized.

The invention discloses a carbon nanotube electric heating film and a preparation method thereof. The carbon nanotube electric heating film comprises a substrate layer, a bonding layer and a conducting layer which are sequentially arranged, carbon nanotubes are distributed in the conducting layer and comprise a plurality of first carbon nanotubes distributed in the first direction and a plurality of second carbon nanotubes distributed in the second direction on the plane of the conducting layer, and the first direction is perpendicular to the second direction. The carbon nanotubes in the conductive layer are directionally arranged to form a more ordered structure, so that higher light transmission is achieved, meanwhile, the transmission efficiency of electrons can be further improved, defects and impurities in the electrons are reduced, and the conductivity and the mechanical strength are guaranteed; and the stable conductive performance and structural strength can ensure that good electronic performance can still be kept during bending and stretching. And finally, good optical, electrical and mechanical properties are kept in the heating process, so that the demisting speed is higher.

The invention provides a bidirectional uniform temperature control platform and a biological 3D printer, and relates to the technical field of 3D printing, the bidirectional uniform temperature control platform comprises a platform main body, a work bearing plate, a uniform temperature plate, an electric heating film, a water cooling plate and at least one semiconductor chilling plate, the work bearing plate is arranged on one side of the platform main body; the temperature uniformizing plate is arranged on one side of the working bearing plate away from the working surface; the semiconductor chilling plate is arranged on the side, away from the work bearing plate, of the temperature uniformizing plate. The electric heating film is arranged on the side, away from the work bearing plate, of the temperature uniformizing plate. The water cooling plate is arranged in the containing inner cavity and arranged on the side, away from the working bearing plate, of the semiconductor chilling plate. Compared with the prior art, by arranging the semiconductor chilling plate and the electric heating film, two-way temperature control can be achieved, switching between a refrigeration platform and a heating platform is not needed, use is convenient, meanwhile, through the additionally-designed temperature uniformizing plate, uniform distribution of heat can be achieved, and the temperature control uniformity is better.

The invention discloses an electrolytic bath thermal management temperature control cover body which comprises a heat preservation cover body of a multi-layer composite structure, the surface of an electrolytic bath is wrapped by the heat preservation cover body, the heat preservation cover body at least comprises an outer layer, a middle layer and an inner layer, the outer layer is a solid cover shell, the middle layer is a heat insulation filling layer, and the inner layer is an attached heat preservation layer; and a multi-point array covered temperature monitoring mechanism for monitoring the temperature of the electrolytic cell is arranged in the heat preservation cover body. The thermal management temperature control cover body of the electrolytic bath adopts a multi-layer composite structure, the outer layer is corrosion-resistant, the middle layer is low in heat conduction, the inner layer is attached for heat preservation, and the heat loss rate is reduced to be below 5%. And a multi-point array temperature monitoring mechanism is arranged, so that the temperature change can be accurately sensed. The modular design supports disassembly and assembly by a single person within 30 minutes, and maintenance is convenient. The carbon fiber heating film, the electric shutter and the air gap adjusting technology are combined, dynamic temperature control and efficient energy saving are achieved, and the device is suitable for complex working conditions of green hydrogen preparation.