3793 results about "Fuse cutout" patented technology

The invention provides a control circuit of an excitation fuse, the excitation fuse and electronic equipment. The excitation fuse comprises N excitation sources, at least one melt and multiple sections of conductors, a melt is connected between every two sections of conductors in the plurality of sections of conductors; m excitation sources in the N excitation sources are connected to the multiple sections of conductors so as to collect currents of the multiple sections of conductors; the control circuit of the excitation fuse comprises a main control module and an inspection module. The inspection module is connected with the main control module; the main control module outputs an inspection signal to the inspection module so as to control the inspection module to detect the N excitation sources; if the holding current is detected from the N excitation sources, determining that the N excitation sources are in a normal standby state; and otherwise, determining that the N excitation sources have faults, and outputting prompt information to prompt a user to carry out fault removal. Therefore, the state of the excitation source in the excitation fuse can be detected, the fault of the excitation source can be found in time, and the reliability of the excitation fuse is improved.

Apparatus, systems, and methods described herein relate to safety devices for electrochemical cells comprising an electrode tab electrically coupled to an electrode, the electrode including an electrode material disposed on a current collector. In some embodiments, a fuse can be operably coupled to or formed in the electrode tab. In some embodiments, the fuse can be formed by removing a portion of the electrode tab. In some embodiments, the fuse can include a thin strip of electrically resistive material configured to electrically couple multiple electrodes. In some embodiments, the current collector can include a metal-coated deformable mesh material such that the current collector is self-fusing. In some embodiments, the fuse can be configured to deform, break, melt, or otherwise discontinue electrical communication between the electrode and other components of the electrochemical cell in response to a high current condition, a high voltage condition, or a high temperature condition.

The invention discloses a new energy automobile fuse life expectancy prediction system based on current sensing, and belongs to the technical field of power transmission and distribution monitoring. In order to solve the problems that life early warning of a dynamic adjustment mechanism is lacked and variable factors in a complex working environment cannot be handled, the system can recognize different load modes by accurately collecting current, temperature and vibration data related to a fuse and combining multi-dimensional factors such as temperature and vibration, and the service life of the fuse is accurately adjusted. The performance of the fuse under various working conditions is comprehensively evaluated, thermal load and loss conditions of the fuse can be estimated by combining a loss model and temperature influence calculation, the accuracy of life prediction is improved, an early warning threshold value is adjusted in real time through a dynamic threshold value adjusting mechanism, and the service life of the fuse can be predicted by dynamically adjusting residual life threshold values at different stages. According to the utility model, the health state of the fuse can be accurately grasped, the maintenance and replacement time can be reasonably adjusted, unnecessary shutdown or delay can be avoided, the fault risk can be effectively reduced, and the safety and reliability of a new energy automobile system can be enhanced.

The present application provides a method for preparing a vertical fuse and an electronic device, comprising: obtaining a parameter table of a vertical fuse, wherein the parameter table includes a preparation sequence of the vertical fuse, and a physical parameter set and a matching relationship parameter set of multiple structures in the vertical fuse, wherein the multiple structures include a first tube body, a second tube body, a target melt, and an arc extinguishing layer; and preparing multiple structures of the vertical fuse according to the preparation sequence and the physical parameters. In this way, the preparation sequence and structural parameters of the vertical fuse are configured through the parameter table, so that the preparation device of the vertical fuse can automatically perform corresponding preparation operations according to the preparation sequence, thereby improving the automation degree and preparation efficiency of the vertical fuse preparation device.

The invention provides an excitation fuse with active and passive integrated protection and a related device. The excitation fuse is applied to a protected circuit. The active and passive integrated protection excitation fuse comprises a fuse shell, an impact device, a first melt, a second melt, a first conductor, a second conductor and at least one excitation source, the excitation fuse is connected in series in a protected circuit through the first conductor and the second conductor; the first melt and the second melt are connected in parallel between the first conductor and the second conductor; when the voltage of the first melt is higher than the trigger voltage of any excitation source in the at least one excitation source, the corresponding excitation source is triggered to release high-pressure gas into the penetrating cavity; or any excitation source in the at least one excitation source releases the high-pressure gas into the penetrating cavity when receiving the control signal of the control circuit; and then the impact device is pushed to impact the first melt and / or the second melt along the movable cavity so as to cut off the first melt and / or the second melt.

The invention relates to the technical field of traveling wave positioning, and discloses a traveling wave positioning method, system and device based on an intelligent fuse, and a medium. The method comprises the following steps: installing an intelligent fuse high-frequency sampling signal to obtain digital data; the data is transmitted to a master control fuse to synthesize a zero sequence quantity to obtain a fault judgment result; constructing a feature matrix by applying adaptive threshold wavelet transform based on the zero sequence quantity; combining zero-sequence current and traveling wave characteristics and adopting an improved algorithm to carry out distance measurement and fault positioning; and executing hierarchical protection according to a judgment result and a positioning result to obtain maintenance information. According to the intelligent device, the position of a fault point can be accurately positioned, and differential protection actions can be automatically executed according to the severity of the fault, so that the fault searching and processing time is greatly shortened, and the operation reliability and the maintenance efficiency of the power distribution network are improved.

The invention provides a fuse slow fusing fault detection method based on phase voltage correlation characteristics. The method comprises the following steps: acquiring three-phase phase voltages of a plurality of nodes at the upstream and the middle and downstream of a line, performing normalization and sliding window processing on the acquired phase voltages, and inputting the phase voltages into a neural network model for training; the fuse anomaly detection method based on the neural network is constructed according to the characteristic that phase voltage may slightly drop when the fuse is slowly fused and by combining priori knowledge of voltage regular change of each node of a line, and a phase voltage reconstruction value is updated in real time by mining nonlinear characteristics among voltage data of each node through the neural network. And finally, according to whether the root-mean-square error between the actual value and the reconstruction value of the phase voltage exceeds an adaptive threshold value, identifying that the fuse is abnormal. Example results show that the method can effectively identify the slow fusing process of the fuse, and a foundation is laid for reliable operation of a protection system and improvement of operation and maintenance efficiency.

The invention relates to the technical field of fuses, and discloses a novel high-voltage fuse, which comprises a fuse mechanism and a control module, and is characterized in that the control module is electrically connected with the fuse mechanism; the fuse mechanism comprises a contact part, an exhaust contact seat part, an insulator, a fuse carrying part and a fiber grating sensor, the lower part of the insulator and the lower part of the fuse carrying part are connected through the exhaust contact seat part, the fiber grating sensor is located in the fuse carrying part, and the upper part of the insulator and the upper part of the fuse carrying part are connected through the contact part. According to the invention, the sensing precision of the operation state of the fuse is improved.

The invention relates to the technical field of high-voltage compensation, and provides a voltage stabilization type electric energy quality comprehensive treatment device. The TBB static reactive power compensation device comprises at least one switching reactance capacitor bank. Wherein the reactance capacitor bank comprises a vacuum contactor; the SVG dynamic reactive power compensation device comprises an SVG compensation device, and the SVG compensation device is electrically connected with a transformer through an isolation switch fuse group. Wherein the transformer is electrically connected with the switched reactance capacitor bank. The disadvantages of a traditional TBB are avoided through the TBB + SVG high-voltage reactive power dynamic hybrid compensation device, and the advantages of the SVG are added; sVG dynamic compensation is high in response speed and can compensate loads with fast reactive power change, and TBB static reactive power compensation is used for compensating stable loads with infrequent reactive power change of the system; fine adjustment can be achieved through combined compensation of the two, compensation precision is high, and the compensation effect is good.

The invention provides an active and passive integrated protection intelligent fuse with a single excitation source. The active and passive integrated protection intelligent fuse comprises a first conducting bar, a signal melt, a second conducting bar, a circuit board and an excitation source, the circuit board is provided with the relay and the excitation source. The relay is connected with an external control unit, the excitation source, the first conducting bar and the second conducting bar. The first conducting bar, the signal melt and the second conducting bar are connected in sequence; an isolating layer is arranged on the relay, and the isolating layer is used for shielding crosstalk of external voltage on the relay; after a plurality of pins of the relay are welded on the circuit board, an insulation processing mode is adopted among the plurality of pins; and in an inspection working condition, the external control unit outputs a first inspection signal to the relay so as to control the relay to be switched into an inspection state, and feeds back the working state of the excitation source to the external control unit.

The invention discloses an electric intelligent monitoring drop-out fuse, and relates to the technical field of protection fuses. The electric intelligent monitoring drop-out fuse comprises an insulating pillar and an isolation arc protection device arranged at the top end of the insulating pillar, and further comprises a fuse carrier support installed at the bottom end of the insulating pillar; the fuse carrier is arranged on one side of the insulating support, and the bottom end of the fuse carrier is rotationally connected with the bottom end of the insulating support through a fuse carrier support; the push-pull type driving mechanism is mounted and sleeved on the insulating support column, and drives the fuse carrier to swing in a push-pull manner; the push-pull type driving mechanism is driven by an impact type driving assembly to slide. The opening and closing driving mode of the fuse is improved, push-out is carried out by adopting a concave-convex wheel impact mode, the opening speed is high, rapid disconnection can be realized, meanwhile, a force storage structure is also arranged for storing force and releasing the force during opening and push-out, the impact type driving assembly can be further assisted to apply driving force, the opening speed is further accelerated, and the response speed is high.

The invention relates to the technical field of state monitoring, in particular to an intelligent fuse comprising a monitoring module, and the fuse comprises a data analysis module, a steady state recognition module, a temperature analysis module, a coupling calculation module and a state calibration module. According to the method, time consistency verification and corresponding matching are carried out on temperature and current sampling, abnormal interference is eliminated in a stable current-carrying interval, a continuous sequence is formed, and a definite time relation is established between thermal response and a current-carrying state by combining analysis of accumulated deviation and change turning of the temperature along with time; the abnormal trend of slow evolution is amplified and presented, correction is carried out according to the direction consistency of multi-segment time difference change, progressive features before fusing are recognized in advance, early warning continuity and operation decision reliability are improved, misjudgment is reduced, continuous updating of state evaluation is supported, and stability of a control closed loop is improved.

The invention relates to a fault detection device and method for a cable branch box, and the device and method are used for the fault detection of the cable branch box, and a fault detection module carries out the fault detection according to data sampling. The fault detection module judges whether the loop is fused at present, and if the loop is fused and the loop is over-current, the fault reason is the loop over-current; or if the loop is fused, no loop overcurrent exists and the loop is short-circuited, the fault is short-circuited; or if the loop is fused, no loop overcurrent exists and no loop short circuit exists, the fault reason is the fuse fault; the detection method is used for the detection device. According to the invention, the fault position and type are determined according to whether loop fusing, loop overcurrent and loop short circuit occur in sequence, and display and warning are carried out through the man-machine interaction module, so that the fault position of the cable branch box can be conveniently found out, and maintenance personnel can conveniently and rapidly position and maintain the fault.

A fuse group assembly may include a first bus bar, a second bus bar in a stepped arrangement with the first bus bar, a first support plate arranged on the second bus bar, a second support plate in a stepped arrangement with the first support plate, a first fuse having a first end electrically connected to the first bus bar and a second end supported by the first support plate, and a second fuse having a first end electrically connected to the second bus bar and a second end supported by the second support plate.

The utility model discloses a novel drop-out fuse, which belongs to the field of drop-out fuses and comprises a high-strength insulator, the upper end of the high-strength insulator is provided with an upper wiring terminal, the lower end of the high-strength insulator is connected with a lower wiring terminal, the upper wiring terminal is provided with a connecting buckle, and the lower wiring terminal is connected with a rotary connecting frame. Through the installation structure, the installation plate is installed on the fixing frame through the rotating seat, rotation adjustment can be carried out when needed, the use flexibility of the whole drop-out fuse is improved, the inserting groove is formed in the rotating seat and used in cooperation with the limiting inserting rod, angle adjustment of the drop-out fuse can be carried out according to a specific angle, and the safety of the drop-out fuse is improved. And the hexagonal block at the end part of the limiting insertion rod is connected with the threaded seat through the threaded groove, so that the connection stability of the limiting insertion rod can be ensured, and the looseness of the drop-out fuse caused by the falling of the limiting insertion rod is avoided.

The invention provides an arc resistance characteristic-based segmented modeling method of a fuse for a direct current networking system, and relates to the technical field of common direct current bus system design, and the method comprises the steps: calculating the real-time arc resistance data of the fuse according to the continuously collected short-circuit voltage and short-circuit current at the two sides of the fuse in a short-circuit test process, and forming an arc resistance curve; intercepting an arc resistance curve from the peak moment of the short-circuit current to the slope descending moment of the arc resistance curve to obtain an arc starting stage arc resistance curve, and intercepting an arc resistance curve from the slope descending moment to the moment when the short-circuit current is zero to obtain an arc burning stage arc resistance curve; respectively carrying out data fitting according to the arc starting stage arc resistance curve and the arcing stage arc resistance curve to obtain a sectional arc resistance curve equation; and taking the arc resistance curve equation as a control signal to build and obtain a fuse simulation model based on the controlled resistor. The method has the advantages that the arc resistance curve is divided into two sections, the corresponding arc resistance curve equation is designed, the simulation precision is higher, and the method can be better suitable for different working conditions.

The invention provides a high-voltage power supply and distribution system for an electric vertical take-off and landing aircraft, and belongs to the technical field of power supply and distribution regulation control systems, and the system comprises a main bus bar module which is used for the current collection and distribution of an energy storage battery and a ground DC bus high-voltage power supply, and is provided with a fuse for overload cut-off; the output bus bar module comprises six mutually-independent motor load output channels and two mutually-independent high-voltage output channels, and each motor load output channel supplies power to the two symmetrically-arranged motors at the same time and is used for distributing 12 motor loads and 2 high-voltage output loads; the power-on buffer module is used for power-on buffer of 12 paths of motor loads and restraining power-on impact current; the self-locking control module has a motor load output control self-locking function, and can keep normal output of motor load current under the condition that the monitoring unit fails; and the monitoring unit module is used for monitoring the input voltage, the output voltage and the load current, and performing power-on buffer control and high-voltage contactor self-locking control on the motor load.

The invention relates to an energy storage container and a fuse adaptation method. The energy storage container comprises a confluence unit; the plurality of high-voltage boxes are connected to the confluence unit; a plurality of battery clusters, wherein one battery cluster is electrically connected with one high-voltage box; the processing unit is electrically connected to the plurality of high-voltage boxes; the high-voltage box comprises a first short-circuit protection unit and a first current detection unit electrically connected to the first short-circuit protection unit, the first short-circuit protection unit is electrically connected to the processing unit, and the first current detection unit is used for detecting short-circuit withstand current of a branch where the high-voltage box is located when the container is short-circuited. And the processing unit is used for selecting a fuse adaptive to the energy storage container in the first short-circuit protection unit according to the short-circuit withstand current. According to the invention, the reliability and rationality of short-circuit protection can be improved, the safety risk caused by improper short-circuit protection is reduced, and the cost is reduced while the electrical safety is improved.

The invention relates to the technical field of power system monitoring and fault diagnosis. The invention provides an overhead line drop-out fuse monitoring method, system and device and a storage medium, and the method comprises the steps: obtaining the temperature data of a drop-out fuse, the current data of a line where the drop-out fuse is located, and the surrounding environment parameter data of the position where the drop-out fuse is located, and obtaining an initial data set; preprocessing the initial data set, and extracting key features to obtain a feature data set; based on the feature data set, constructing a temperature-current-environment coupling model, performing multi-dimensional correlation analysis on the feature data set, and dynamically calculating a real-time operation risk index of the drop-out fuse; and if the real-time operation risk index exceeds a preset threshold value, triggering a grading early warning mechanism, and synchronously generating a diagnosis report containing an abnormal parameter, position information and a timestamp. The problem that in the prior art, a traditional manual inspection mode is difficult to meet the requirement for monitoring the temperature of the overhead line drop-out fuse terminal in real time is solved.

The invention specifically relates to a standardized fuse fault monitoring and diagnosis system, and relates to the technical field of power system protection equipment monitoring. A signal processing and impedance spectrum calculation module; an intelligent diagnosis and state evaluation module; and a benchmark management and personalized tracking module. According to the invention, controllable micro test signals are actively injected to obtain frequency domain impedance fingerprints, and accurate capture of microscopic degradation is realized; non-intrusive coupling and signal injection are adopted, the topology of a main loop does not need to be changed, the inherent protection characteristic of the fuse is guaranteed, and power frequency interference can be penetrated; the recognition amount of budding faults such as contact oxidation and melt corrosion is improved in advance, and power failure accidents caused by fault expansion are avoided.

The invention belongs to the technical field of pole-mounted circuit breakers in power systems, and particularly relates to a pole-mounted circuit breaker integrating electricity taking and traveling wave distance measurement. The high-voltage fuse is connected with an integrated capacitor or a high-voltage sampling capacitor, and the high-voltage sampling capacitor is arranged on a wire inlet side and a wire outlet side; the integrated capacitor is arranged on the wire inlet side in the A-phase solid-sealed polar pole and the B-phase solid-sealed polar pole, and is arranged on the wire outlet side in the C-phase solid-sealed polar pole; the integrated capacitor is connected with the secondary circuit module in the box body, the capacitors C2 and C3 are connected with the transformer T2 in series, the power frequency electricity taking transformer T1 is connected to the C2 and C3 in parallel, and the secondary side of the T1 is connected with the electricity taking circuit; the protection circuit is connected to the C3 in parallel; and the traveling wave acquisition circuit is connected with the secondary side output winding of the T2. According to the invention, self-power-taking power supply for the power distribution terminal and acquisition of voltage and current traveling wave signals for fault point positioning judgment are realized, the operation efficiency and reliability of the power distribution network are improved, and powerful guarantee is provided for construction of the intelligent power distribution network.

The invention provides a fault early warning protection device of a fuse and a control method. The device comprises a sensing unit used for detecting state data of a fuse, the state data comprising one or more of temperature, vibration signals, ultrasonic signals and current; the controller is in communication connection with the sensing unit, and the controller is used for determining whether the fuse is abnormal or not according to the state data; and the alarm device is in communication connection with the controller, and the alarm device is used for giving an alarm when the fuse is abnormal. According to the scheme, the problem of low efficiency of a manual fuse inspection mode in the prior art is solved.

The invention provides an excitation fuse with a tubular structure, which comprises a closed insulating shell, and a first connecting end and a second connecting end are arranged at two ends of the insulating shell; a closed cavity is formed in the insulating shell, a movable block and two limiting parts with conductive performance are arranged in the closed cavity, a limiting gap is formed between the two limiting parts, and the two limiting parts are electrically connected with the first connecting end and the second connecting end respectively; the movable block comprises a first end and a second end which are opposite, and the first end is provided with an excitation source; the two sides of the second end are in tight fit connection with the two sides of the limiting gap respectively, and the two limiting parts are in conductive connection through the second end; a receding space is formed between the second end and the inner wall of the closed cavity. According to the tubular structure excitation fuse with the structure, the filling amount of an excitation source can be effectively reduced, and the design difficulty of the insulating shell is reduced; in addition, the melt part is compact in overall structure and convenient to use in occasions with strict space requirements.

The invention provides an intelligent fuse, and belongs to the technical field of circuit protection, and the intelligent fuse is characterized in that an upper housing is provided with at least one excitation chamber, the excitation chamber is internally provided with at least one excitation part and at least one impact part, and the excitation part releases high-pressure gas when receiving any one of an external trigger signal and an internal trigger signal; the lower shell is provided with at least one cooling cavity; the current-conducting plate is arranged between the upper shell and the lower shell, and the impact part moves towards the direction where the cooling cavity is located under the thrust action of the high-pressure gas so as to cut off the current-conducting plate; the self-control module is arranged outside the shell and comprises a current detection unit and a processing unit, and the current detection unit is used for detecting a current signal on the conductive plate; the processing unit is used for generating an internal trigger signal according to the current signal. The beneficial effects of the invention are that a dual-trigger mechanism and redundancy design of an internal trigger signal and an external trigger signal are adopted, so that normal action can still be ensured when any signal fails, and the breaking reliability is improved.

The utility model discloses an electronic protection device and a power utilization device, and belongs to the field of fuses. The electronic protection device comprises a conductive element used for being connected to a circuit to be tested; the first excitation fuse and the second excitation fuse are connected in series on the conductive element; the arc extinguishing fuse is connected with the second excitation fuse in parallel; and the controller is used for detecting the value of a current flowing through the conductive element of a circuit to be detected, and is in communication connection with the first excitation fuse and the second excitation fuse. The first excitation fuse and the second excitation fuse are connected in series, the arc extinguishing fuse and the second excitation fuse are connected in parallel, and the controller outputs a trigger signal according to the detected current, so that the electronic protection device switches the first working mode or the second working mode, and the circuit can be protected when the circuit is overloaded or short-circuited.

The utility model provides a fuse end cap automatic installation mechanism. The fuse end cap automatic installation mechanism comprises an end cap feeding module, an end cap primary positioning tray, an end cap installation module, a pipe body transmission module and a servo controller. The pipe body conveying module is arranged on one side of the end cap mounting module; the end cap feeding module and the end cap primary positioning tray are arranged on the other side of the end cap mounting module, and an end cap primary positioning structure matched with an end cap is arranged on the upper end face of the end cap primary positioning tray; the end cap mounting module comprises a moving sub-module and a secondary positioning sub-module, and the moving sub-module is located on one side of the secondary positioning sub-module; the secondary positioning sub-module comprises an end cap secondary positioning structure, a pipe body positioning base and a clamping and overturning structure. According to the scheme, by arranging the two-time positioning structure of the end cap, accurate positioning of end cap installation can be achieved, the accuracy of the installation angle and position of the end cap is ensured, meanwhile, automatic production is adopted, and the production efficiency and the product percent of pass are improved.

The utility model provides a high-voltage direct current module with control protection function, which comprises a base, a shell, contactors, fuses and copper bars, the base is detachably connected with the shell, an accommodating space is formed between the shell and the base, the contactors, the fuses and the copper bars are arranged in the accommodating space, the base and the shell are fixed in a matched manner by using four hook-shaped buckles, and the shell is detachably connected with the base. The contactors, the fuses and the copper bars are limited through clamping grooves, the contactors and the fuses are fixed to the copper bars through screws, the outside of the module is connected with a main loop through the copper bars, and the locking screws are fixed. According to the modular installation structure, the contactor and the fuse are integrated, the size is smaller, and maintenance and replacement of the control protection module are facilitated.

A battery pack includes a control circuit board, a first cell, a second cell, a fuse, and a belt. The first cell has a first terminal electrically coupled to the control circuit board. The second cell is electrically coupled to the first cell and has a second terminal. The fuse electrically couples the second terminal to the control circuit board. The fuse is located between the second terminal and the control circuit board. The tape is electrically insulating and is molded to the fuse. The belt electrically isolates the fuse from the first electrical core.

The invention provides a new energy vehicle high-voltage system and a vehicle with the same. The new energy automobile high-voltage system comprises a power battery, a power distribution unit and a diagnosis controller. The power distribution unit is electrically connected with the power battery, the power distribution unit internally comprises a plurality of power distribution branches used for being conducted with different electric loads, a first electronic fuse module is arranged in the power distribution unit, and a plurality of electronic fuse control channels are packaged in the first electronic fuse module; the plurality of electronic insurance control channels and the plurality of power distribution branches are correspondingly connected in series; when the current detected by the diagnosis controller exceeds a preset overcurrent value, the corresponding electronic insurance control channel is controlled to be disconnected; and when the current of the power distribution branch exceeds the short-circuit detection value, the corresponding electronic insurance control channel is automatically controlled to be in a disconnected short-circuit triggering state, so that the problems of slow fault response and insufficient safety of a high-voltage framework in the prior art are solved.

The invention discloses an intelligent fuse with a fault location function, and relates to the technical field of fuses. The device comprises an insulating assembly, an insulating column, two first rainproof covers which are located at the upper part of the insulating column and are arranged in a right-angle manner, two second rainproof covers which are located at the lower part of the insulating column and are arranged in a right-angle manner, and a linkage switching assembly, comprising a linkage cylinder parallel to the insulation column, an electromagnet fixed to the bottom in the linkage cylinder, a metal column located over the electromagnet, a fusing assembly comprising two fusing tubes symmetrically located on the left and right sides of the linkage cylinder, and a gas pushing assembly. Comprising a pushing cylinder located on one side of the linkage cylinder and a pushing rod located in the pushing cylinder. According to the invention, the movement of the metal rod is controlled through the electromagnet, so that the switching work of the other fuse tube can be ensured when the fuse tube is naturally damaged, the normal work of the fuse is ensured, and meanwhile, the reason of the open circuit of the fuse can be quickly judged through the use of the push rod.