45 results about "Thermal breakdown" patented technology

The invention discloses a high-frequency and high-voltage resistant heat shrink tube, which adopts polyethylene as a main body resin, is a non-polar material, has a dipole moment of 0 and a very low dielectric loss of 10 <-4 >, and can realize higher-voltage thermal breakdown under high frequency due to the relatively low dielectric loss. Meanwhile, the insulating heat conduction material with low dielectric loss and high heat conductivity coefficient is selected, and when the polyethylene material generates heat at high frequency, the heat shrink tube has good heat conductivity coefficient and small temperature rise, so that the voltage of heat breakdown resistance of the heat shrink tube can be further improved. According to the high-frequency and high-voltage resistant heat shrink tube, the leakage current does not exceed 100 mA after the high-frequency and high-voltage resistant heat shrink tube is resistant to the voltage of 5000 V at the frequency of 400 + / -100 kHz for 60 s, and the safety requirement of the national standard GB9706.202-2021 is met.

The invention relates to the technical field of semiconductor testing, in particular to a method and a system for testing avalanche tolerance of a semiconductor diode. The method comprises the following steps: in the process of peak voltage stimulation and recovery to a stable state, obtaining a thermal imaging image of a semiconductor diode, and determining a peak value region of local temperature; determining a heat dissipation insufficiency index according to the temperature change and the area of the peak region; determining a local overheating factor of the thermal imaging image in combination with the heat dissipation insufficiency index and the distances of all peak regions; determining the dissipation rate of the local overheating phenomenon of the diode according to the numerical change of the local overheating factors of all thermal imaging images on the time sequence; determining the possibility of thermal breakdown by combining the local overheating factor and the dissipation rate; and determining the avalanche tolerance according to the numerical change of all thermal breakdown possibilities of the diode at different peak voltages. The avalanche tolerance can be specifically analyzed according to the temperature change, so that the accuracy of the avalanche tolerance is higher.

The invention discloses an efficient electric flame furnace end and an electric flame stove. The efficient electric flame furnace end comprises a shell, a single anode needle, a single cathode tube, a ceramic tube, an air duct inner wall, an air duct outer wall, a heating coil and an airflow generation assembly. The single anode needle and the single cathode tube are arranged, the actual discharge gap between the single anode needle and the single cathode tube can be set to be 10-20 cm and is far larger than the preset discharge distance, air thermal breakdown can still be achieved by adopting stable breakdown voltage in the prior art, extra voltage increase is not needed, meanwhile, the long-distance arrangement of the single anode needle and the single cathode tube is achieved, and the service life of the anode needle and the cathode tube is prolonged. The collision probability of gas molecules and electric field electrons is increased through the long arc, and high-efficiency heating is achieved; in addition, due to the arrangement of the single anode needle and the single cathode tube, the structure of the furnace end is simplified, the number of electrodes and a complex arrangement structure are reduced, and the assembly difficulty and the production and manufacturing cost are reduced; and meanwhile, the simplified structure enables air flow in the furnace end to be smoother, electric field distribution to be more concentrated, and the problems of mutual interference among multiple electrodes, electric field disorder and unstable discharge are avoided.

The utility model discloses a passive adjustable voltage clamping circuit with a temperature protection function, which comprises an input positive end IN +, an input negative end IN-, a diode D1, a diode D2, a diode D3, a triode Q1, a field effect transistor Q2, a triode Q3, a controllable precise voltage stabilizing source N1, a temperature sensor RT1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7 and a slide rheostat R8, the input positive end IN + and the input negative end IN-serve as input power sources, the clamping circuit works passively and can bear very high power, and the bearing power depends on the peak power of the field efficiency tube; the clamping voltage is adjustable, the voltage precision is high, the error is controlled below 1%, the field effect transistor Q2 has an over-temperature protection function, the circuit is prevented from being damaged due to thermal breakdown when external high voltage lasts for a long time, the circuit is simple, the circuit is composed of discrete components, the cost is low, implementation is easy, and the cost performance is high.

This invention belongs to the field of power electronics technology and relates to a DC electronic switch circuit with over-temperature protection and spike suppression, and its operating method. It includes: a power unit, whose input terminal is connected to the positive DC input terminal H3, and whose output terminal is connected to the positive DC output terminal H5; a drive unit, whose input terminal is connected to the drive signal terminal H1, and whose output terminal is connected to the control terminal of the power unit; an over-temperature protection unit, whose sampling terminal is thermally coupled to the power unit, and whose control terminal is connected to the drive unit; a spike suppression unit, including a first spike suppression branch and a second spike suppression branch; and a negative DC output terminal H6 connected to the negative DC input terminal H4. This invention achieves real-time monitoring and active protection of the junction temperature of the power device, rapidly shutting down in case of overheating to avoid thermal breakdown; simultaneously, it utilizes bidirectional spike suppression technology to effectively block surge impacts, ensuring the safe and reliable operation of the electronic switch in harsh electrical environments.

The invention relates to the field of semiconductors, in particular to a silicon carbide MOSFET with low on-resistance and optimized electromagnetism, a high-conductivity region is arranged in a junction field effect transistor region on the side of a Schottky barrier diode, the on-resistance is reduced, the current density uniformity is improved, Schottky barrier diode metal and a source electrode metal electrode are connected through a diversion slope, and the current density uniformity is improved. A junction field effect transistor region is integrated with a grounding metal shielding layer, gate source parasitic capacitance is reduced, inductive coupling is reduced, high-frequency stability is improved, a P-type shielding doping layer is arranged between a source groove and the junction field effect transistor region and between the source groove and an epitaxial layer, double isolation with the metal shielding layer is achieved, and electromagnetic interference is reduced. The high-conductivity region, the diversion slope and the P-type shielding doping layer cooperate to reduce the amplification of short-circuit resistance, prolong the short-circuit tolerance time and avoid the risk of thermal breakdown.

This invention belongs to the field of power engineering technology, specifically a cable connection device, including a housing; a fastening nut is threaded onto the outer surface of the housing; a compression ring is provided between the fastening nut and the housing; a cable body is provided inside the compression ring; the cable body includes a protective sleeve, a support ring, and a conductor. In this invention, the entire contact interface between the conductor and the connection substrate can be directly flushed and wetted by coolant, thereby completely solving the problem of localized overheating caused by incomplete coverage, ensuring the uniformity of temperature distribution at the connection point, and significantly improving connection safety and equipment reliability. Through the above-mentioned efficient and comprehensive cooling, the risk of accelerated aging of insulation materials, thermal breakdown, and short-circuit faults caused by overheating at the conductor connection point is fundamentally reduced. This not only ensures the immediate safety of the cable connection but also extends the service life of the connection device, providing a solid technical guarantee for the long-term stable operation of the entire power system.

The application discloses a dry-type hollow shunt reactor overvoltage protection device and belongs to the technical field of overvoltage protection of power transmission and transformation equipment. When system operation overvoltage occurs, the frequency absorption unit can reduce the oscillation frequency of overvoltage, slow down the rising front of overvoltage, solve the damage of high-frequency components to the reactor winding, and inhibit the overvoltage peak value. When the frequency absorption unit cannot inhibit the overvoltage peak value, the overvoltage absorption unit plays a role in limiting the overvoltage peak value, and the insulation level of the reactor is enhanced. Through the application of the voltage monitoring and conversion unit, when the reactor is normally operated or the overvoltage is lower than the operation threshold value, the high-speed control switch is turned on, the explosion-proof separation unit is short-circuited and bypassed, and the frequency inhibition absorption unit and the overvoltage absorption unit bear the main protection task. When the monitored voltage exceeds the set threshold value or the absorption unit fails or is subjected to thermal breakdown, the high-speed control switch is turned off, the explosion-proof separation unit is connected to the circuit, the faulty unit is timely removed, and the fault expansion is prevented.

The invention relates to the technical field of IGBTs (Insulated Gate Bipolar Translator), in particular to a crimping type IGBT assembly, which comprises a first IGBT module, a second IGBT module and a third IGBT module, the second IGBT module is arranged at the top of the third IGBT module; the first IGBT module is arranged at the top of the second IGBT module; the crimping type IGBT assembly further comprises a first upper horizontal row, a first lower horizontal row and a first vertical row. The crimping type IGBT assembly further comprises a second upper horizontal row, a second lower horizontal row and a second vertical row. By optimizing the IGBT module stacking layout and the copper bar connecting structure, the total distance of current transmission paths from the input interface to the collector electrode of each IGBT module and from the output interface to the emitter electrode of each IGBT module is completely consistent, and the balance of parasitic resistance and parasitic inductance of each branch is ensured; therefore, the problem of current unbalance caused by path difference in an existing parallel structure is effectively solved, the current sharing coefficient is stabilized at a high level, and thermal breakdown or electric stress damage caused by long-term overload of a single IGBT module is avoided.

The invention relates to the technical field of intelligent power grids, in particular to a model simulation method for a power supply system and a storage medium. The method comprises the following steps: acquiring power transmission line data; performing electric power tide simulation according to the power transmission line data to obtain electric power tide data; performing cable aging anomaly detection based on the power flow data to obtain cable aging data; performing thermal breakdown risk prediction according to the cable aging data to obtain thermal breakdown data; dielectric layer structure degradation analysis is carried out based on the thermal breakdown data to obtain dielectric layer structure degradation data; performing main bus off-network detection based on the dielectric layer structure degradation data to obtain main bus off-network data; and carrying out sweep range analysis according to the main bus off-network data to obtain local bus off-network data and full bus off-network data. The fault recognition rate and the simulation response accuracy of the power supply system are improved based on the intelligent power grid technology.

The embodiment of the invention relates to the field of photovoltaic technology, and provides a photovoltaic junction box, which comprises a conductive device, and the conductive device comprises a conductive part and a first clamping part which are connected with each other. The diode device comprises diode assemblies which are connected with each other and a second clamping part which is used for being matched with the first clamping part in a clamping manner, so that the conductive piece is electrically connected with the diode assemblies when the first clamping part and the second clamping part are matched in a clamping manner; wherein one of the first clamping part and the second clamping part is a clamping through groove, the other one of the first clamping part and the second clamping part is a clamping protrusion, and an observation hole is formed in the conductive device, so that when the first clamping part and the second clamping part are clamped and matched, the clamping part is located in the observation hole. According to the photovoltaic junction box provided by the embodiment of the invention, at least rapid installation and replacement of the diode device can be realized, the maintenance time and cost are reduced, the thermal breakdown risk of the diode assembly can be avoided, and the thermal breakdown failure rate is reduced.

The present invention relates to the field of semiconductor testing technology, and in particular to a method and system for testing the avalanche withstand capability of semiconductor diodes. The method comprises: obtaining a thermal imaging image of a semiconductor diode during the process of being stimulated by a spike voltage and returning to a stable state, and determining the peak area of ​​the local temperature; determining a heat dissipation index based on the temperature change and the area of ​​the peak area; determining a local overheating factor of the thermal imaging image in combination with the heat dissipation index and the distance of all peak areas; determining a dissipation rate of the local overheating phenomenon of the diode based on the numerical changes of the local overheating factors of all thermal imaging images in a time sequence; determining the possibility of thermal breakdown based on the local overheating factor and the dissipation rate; and determining avalanche withstand capability based on the numerical changes of all thermal breakdown possibilities of the diode at different spike voltages. The present invention can perform a specific analysis of avalanche withstand capability based on temperature changes, thereby making the avalanche withstand capability more accurate.

The invention provides a thermoelectric coupling-based solar cell temperature analysis method, medium and equipment, and the method comprises the steps: carrying out the scanning of impedance maps of different types of batteries, and extracting the parameter data of the batteries under different forward bias voltages; the different types of batteries comprise a single normal battery, a single defective battery, a single battery and a solar battery array; analyzing and processing the battery parameter data to obtain influence factors influencing the temperature of the solar battery; wherein the influence factors comprise one or more of reverse current thermal damage of the battery, a critical condition threshold value of thermal breakdown of the battery and impedance characteristics of the battery. According to the method and the device, the solar cell temperature under different conditions is analyzed, so that factors influencing the cell temperature are known more accurately, and the performance of the solar cell is improved.

The invention discloses a cable head stress cone which is used in the technical field of cable head protection equipment. The device comprises: an insulating adhesive body; the insulated inner sleeve comprises two insulated inner half tubes which are oppositely arranged, and the two insulated inner half tubes are connected in a sealing manner through an insulated bonding body; the heat insulation interlayer pipe assembly is arranged on the peripheral side of the insulation inner sleeve in a sleeving mode, the heat insulation interlayer pipe assembly comprises at least one pair of oppositely-arranged heat insulation half pipes, and the two heat insulation half pipes are connected in a sealed mode through an insulation bonding body; and the protective sleeve is arranged outside the peripheral side of the heat insulation interlayer pipe assembly in a sleeving mode. When the insulating inner sleeve encounters high temperature, the insulating inner sleeve can be heated to be ceramized, and the condition of electric breakdown is prevented. The heat insulation interlayer pipe assembly can buffer internal thermal stress and can be matched with the insulation inner sleeve to reduce the gradient difference of internal temperature, and therefore the possibility of thermal breakdown is reduced. And the diameter of the stress cone part of the cable head formed by sleeving multiple pipes is gradually reduced so as to provide protection on an external mechanical structure.

The invention relates to a regulating unit (10) for a battery cell (100), comprising a pressure regulating unit (12), which is designed to adapt a pressure in the battery cell (100), and a logic unit (14), which is designed to detect a thermal breakdown of a battery cell (102) of the battery cell (100), the pressure regulating unit (12) being designed to adjust the pressure in the battery cell (100), and the logic unit (14) being designed to detect the thermal breakdown of the battery cell (102) of the battery cell (100). When a thermal breakdown is detected, the pressure of the battery cell (100) is reduced.

The application discloses a cable head stress cone, which belongs to the technical field of cable head protection equipment. The device comprises an insulating adhesive body, a heat-treated ceramic insulating inner sleeve, the insulating inner sleeve comprising two oppositely arranged insulating inner half tubes, the two insulating inner half tubes being sealingly connected through the insulating adhesive body, a heat-insulating interlayer pipe assembly, the heat-insulating interlayer pipe assembly being sleeved on the outer circumferential side of the insulating inner sleeve, the heat-insulating interlayer pipe assembly comprising at least one pair of oppositely arranged heat-insulating half tubes, the two heat-insulating half tubes being sealingly connected through the insulating adhesive body, and a protective sleeve, the protective sleeve being sleeved on the circumferential side of the heat-insulating interlayer pipe assembly. When the insulating inner sleeve is subjected to high temperature, the insulating inner sleeve is heat-treated to be ceramic, so that the electric breakdown is prevented; the heat-insulating interlayer pipe assembly can buffer the internal thermal stress, and the insulating inner sleeve can reduce the temperature gradient difference, so that the possibility of thermal breakdown is reduced; and the multi-pipe sleeve connection forms the cable head stress cone, the diameter of which gradually decreases to provide protection on the external mechanical structure.

The application relates to a device with an electrostatic discharge protection structure and a manufacturing method thereof, the device comprising a device region and an ESD region, the device region comprising: a substrate; an insulating layer arranged on the substrate; and a device active region layer arranged on the insulating layer; and the ESD region comprising: a semiconductor layer connected with the substrate; a well region arranged in the semiconductor layer; a first doped region arranged on the surface of the well region; a second doped region arranged on the surface of the well region; and a gate arranged above the well region between the first doped region and the second doped region; wherein the gate is a gate of a GGNMOS, the first doped region is a source of the GGNMOS, the second doped region is a drain of the GGNMOS, the semiconductor layer is an emitter of a triode, the second doped region is a collector of the triode, and the well region of the second conduction type is a base of the triode. The application can avoid thermal breakdown failure of the ESD protection structure caused by poor heat dissipation. The ESD region has two current discharge paths, the current discharge efficiency is improved, and the ESD protection capability is high.

The invention provides an explosion-proof transient voltage suppressor diode in open circuit failure, which belongs to the technical field of surge protection devices and comprises a crystal grain, a first electrode and a second electrode. The insulating layer covers the non-protruding part of the inverted-T-shaped first electrode and exposes the protruding part of the first electrode; the fusible alloy sheet layer is connected with the protruding part of the first electrode; the third electrode is connected with the protruding part of the first electrode through a fusible alloy sheet layer; and the plastic package body is used for wrapping the crystal grains, the first electrode, the second electrode and the insulating layer and exposing the surfaces of the insulating layer and the second electrode. The beneficial effects are that when a surge event occurs, heat generated by grain thermal breakdown is transmitted to the fusible alloy sheet layer, the fusible alloy sheet layer is heated and fused, open circuit failure is realized, and plastic package body explosion caused by metal vaporization when the device is in open circuit failure is avoided; in addition, interference peaks generated when the device bears surge thermal breakdown failure and open circuit failure can be avoided.

The invention relates to a process for cleavage of fuels by thermal breakdown of the fuel to give fuel gas and charcoal within a reactor (3) that extends in a longitudinal direction (L) from an entry section (7) of the reactor (3) to an exit section (9) of the reactor (3), characterized by the process steps of: a. feeding the fuel into the entry section (7) of the reactor (3), with formation of a gas space (16) above a bed of the supplied fuel in the reactor (3), b. conveying the bed of fuel within the reactor (3) from the entry section (7) of the reactor (3) to the exit section (9) of the reactor (3) by means of a mechanical conveying device (15), c. cleaving the solid fuel by thermal breakdown by partial gasification by means of partial oxidation, d. sucking fuel gas out of the gas space (16) at a suction site (27) in the reactor (3) into a recirculation system (25), e. feeding the fuel gas from the recirculation system (25) back into the gas space (16) at a feed point (37) in the reactor (3) which is at a distance from the suction site (27) in the reactor (3), and f. discharging the at least partly broken-down fuel from the reactor (3) in the exit section (9).

The utility model discloses a heat dissipation sandwich structure metal matrix composite film which comprises a surface layer and a bottom layer, the outer surface of the surface layer is provided with first air holes, and the outer surface of the surface layer is provided with scale strips. According to the heat dissipation sandwich structure metal matrix composite film, the bottom layer attached to the equipment is provided with the second air holes, heat enters the heat dissipation layer from the second limiting holes, and due to the fact that the second limiting holes are set to be large in hole diameter, the heat can effectively enter the heat dissipation layer from the second air holes and then enter the first limiting holes to be discharged from the first air holes formed in the upper surface of the surface layer; the first air holes are small in diameter, so that the situation that a large amount of external dust falls into the heat dissipation layer to form blockage is avoided, the good heat dissipation function of the metal-based composite film is reflected, the situation that the metal-based composite film is subjected to thermal breakdown is effectively avoided, and the service life of the metal-based composite film is prolonged. And meanwhile, the blades protect the equipment from high temperature to influence normal internal operation, and meanwhile, the service life of internal parts of the equipment is prolonged.

The application discloses a temperature rise cooperative monitoring and cooling control system, which comprises a multi-dimensional cooperative perception module, a predictive cooperative decision module, a multi-modal adaptive cooling execution module and an edge computing unit, and realizes data interaction with the edge computing unit through an industrial Ethernet bus; the edge computing unit is also bidirectionally connected with a controller of a water-cooled high-voltage reactive power compensation device to realize device operation state data acquisition and load limiting signal transmission. The application belongs to the technical field of temperature control, and through multi-dimensional global perception, long-time sequence temperature rise accurate prediction and fault linkage emergency response, the application can avoid core component overheating risk in advance, quickly dispose of precursors of faults, effectively reduce the failure rate of faults such as thermal breakdown and short circuit, guarantee the stable operation of a power grid, and improve the operation safety and monitoring accuracy.

The utility model discloses a multi-core group power capacitor, which comprises a sleeve shell, a conduction piece, a sealing cover and a combination seat, a separation seat is arranged in the sleeve shell, a plurality of core bags inserted into the separation seat are arranged in the sleeve shell, a heat conduction block is filled between the sleeve shell and the core bags, and the conduction piece is arranged in the sleeve shell and is connected with the separation seat. The conducting piece conducts heat of the core bag and the separation seat to the sleeve shell, the sealing cover is fixedly connected with the sleeve shell, the sealing cover is connected with a wire connector, the wire connector is electrically connected with the core bag, the multiple combination seats are arranged, each combination seat is provided with a clamping strip, and the combination seats sleeve the sleeve shell through the clamping strips; the separation seat separates the core cladding to avoid heat accumulation, the heat conduction block and the supporting disc conduct heat to the sleeve shell, the temperature in the sleeve shell is prevented from being too high, the problems of thermal breakdown, short circuit and the like of the capacitor are prevented, use is safer, the stability of the performance of the capacitor is maintained, and the capacitor is combined through the combination seat and high in flexibility.

The present invention relates to a device with an electrostatic discharge protection structure and a manufacturing method thereof. The device includes a device region and an ESD region. The device region includes: a substrate; an insulating layer provided on the substrate; a device active region layer provided on the insulating layer. The ESD region includes: a semiconductor layer connected to the substrate; a second conductivity type well region provided in the semiconductor layer; a first doped region provided on the surface of the second conductivity type well region; a second doped region provided on the surface of the second conductivity type well region. Among them, the first doped region serves as the emitter of the first triode, the semiconductor layer serves as the emitter of the second triode, the second doped region serves as the collector of the first triode and the second triode, and the second conductivity type well region serves as the base of the first triode and the second triode. The present invention can avoid the failure of the ESD protection structure due to thermal breakdown caused by poor heat dissipation. The ESD region has two current discharge paths, improving the current discharge efficiency and having a high ESD protection ability.

The application discloses a KGD high temperature test system comprising a test socket, the test socket is connected in parallel with a test loop and a discharge loop, and the test loop and the discharge loop are connected to the test socket through a relay. The relay controls the test socket to be connected with the test loop or the discharge loop. By adding a discharge loop and carrying out current limiting setting, short-circuit current can be completely limited, so that the test socket is better protected; the problems that a traditional test loop is large in stray inductance, the test loop is not subjected to current limiting optimization, thermal breakdown of a chip is caused by testing, and a test socket is damaged are solved, the test efficiency and the reliability of chip testing are improved, and the maintenance cost of the test socket is reduced.

The invention discloses a sandwich structure composite phase change material for multifunctional thermal management and a preparation method thereof, and belongs to the technical field of thermal management materials and phase change materials. The composite phase-change material provided by the invention has a sandwich structure, and the first layer adopts the silicon dioxide aerogel as a base material and is composed of the quartz fibers and the phase-change microcapsules, so that the composite phase-change material has high energy density and low thermal conductivity. The second layer is only made of silicon dioxide aerogel, heat interaction of the first layer and the third layer can be blocked, a relatively independent thermal environment is maintained, and meanwhile possible thermal breakdown is prevented after complete phase change of the phase change microcapsules. The third layer is composed of crystalline flake graphite, phase change microcapsules and carbon fibers which are connected with one another, and the crystalline flake graphite can serve as a heat conduction framework, so that the heat conductivity in the composite phase change material is improved, the heat storage and release rate of the phase change microcapsules MPCM is increased, and temperature rise caused by heat accumulation on the surface of the material is prevented.

The invention discloses a method and a system for testing limit endurance capacity of a resistor disc for a lightning arrester, and belongs to the technical field of alternating current transmission. The method comprises the following steps: determining different initial temperatures and different test working conditions of a test; selecting different power frequency overvoltage test loops under different initial temperatures and different test conditions, and testing a plurality of groups of resistor discs for the lightning arrester to be tested; and after the resistor disc thermally collapses, recording test data when the resistor disc is damaged, and determining the endurance capacity of the resistor disc based on the test data. Compared with a traditional test method for the power frequency voltage tolerance time characteristic of the resistor disc, the test method can be used for researching the limit tolerance capacity of the resistor disc under different working conditions. According to the method provided by the invention, related test researches under the working conditions of different initial temperatures, different energy injection and the like are carried out.

The invention relates to a sheathing paper for aerosol-generating articles, which paper comprises cellulose fibres and onto which paper a composition is applied, which comprises a substance that accelerates the thermal breakdown of cellulose and a binder. Should the mean air permeability of the sheathing paper be 10 cm3 / (cm2·min·kPa) or more, said composition is merely applied in some regions, which cover at least 0.5% and at most 70% of the area of the sheathing paper.

The invention belongs to the technical field of electric power engineering, and particularly relates to a cable connecting device which comprises a shell. The outer thread of the shell is connected with a fastening nut; an extrusion ring is arranged between the fastening nut and the shell; a cable main body is arranged in the extrusion ring; the cable main body comprises a protective sleeve, a supporting ring and a conductor; according to the invention, the whole contact interface of the conductor and the connection substrate can be directly scoured and infiltrated by the cooling liquid, so that the problem of local overheating caused by incomplete coverage is thoroughly solved, the uniformity of temperature distribution of the connection part is ensured, and the connection safety and the equipment reliability are remarkably improved; and the risks of accelerated aging, thermal breakdown and short-circuit faults of an insulating material caused by overheating of the conductor connecting part are fundamentally reduced, so that instant and safe cable connection is guaranteed, the service life of the connecting device is prolonged, and a solid technical guarantee is provided for long-term stable operation of a whole power system.

The application discloses a high-temperature-resistant surge protector and a preparation method thereof. The application is characterized in that a heat-conducting glue is filled in a filling cavity formed between a pressure-sensitive resistor and a shell, so that the pressure-sensitive resistor can quickly dissipate heat to the surrounding in each surge protection module in the surge protector, the heat dissipation effect is improved, the thermal breakdown time of the pressure-sensitive resistor is effectively prolonged, and the thermal runaway phenomenon of the surge protection module is avoided. Meanwhile, the instantaneous heat generated by the pressure-sensitive resistor is promptly and evenly released to the surrounding, so that the tripping point is not out of control due to the instantaneous heat generated on the pressure-sensitive resistor, and the effectiveness and safety of the surge protector are improved. In addition, the heat-conducting glue is constructed by spherical alumina, spherical zinc oxide and hexagonal boron nitride to form a dense and continuous heat-conducting structure, so that the overall heat-conducting performance is significantly improved. Meanwhile, a flame retardant is added to the heat-conducting glue to endow the heat-conducting glue with excellent flame-retardant protection capability, so that the use risk brought by high-temperature working conditions is effectively resisted, and the safety of the surge protector is further ensured.