432 results about "Electrical devices" patented technology

The invention discloses a GIS partial discharge intelligent diagnosis system and method based on one-dimensional ultrahigh frequency signal analysis, and relates to the technical field of power electrical equipment intelligent monitoring, and the system comprises a signal collection and preprocessing module which is used for collecting ultrahigh frequency signals of GIS equipment and obtaining preprocessed signal data through a dynamic threshold algorithm; the discharge initial judgment module is used for performing multi-dimensional sequential judgment to eliminate interference discharge data so as to obtain effective discharge signal data; the feature extraction module is used for performing time domain kurtosis and pulse width analysis, frequency domain energy distribution analysis and time-frequency domain wavelet entropy calculation based on the multi-dimensional features of GIS partial discharge, and generating an optimized feature subset; and the type identification module is used for identifying the partial discharge type by using the integrated learning model to obtain a diagnosis result. According to the invention, the problem of unstable recognition accuracy caused by insufficient signal preprocessing, single feature representation and single classification algorithm in the prior art is solved.

The invention discloses a method and equipment for determining a wiring state and a storage medium. The method comprises the following steps: receiving target image data containing image information at a wiring position, performing target detection and feature extraction processing on the target image data, automatically identifying a connecting element (a first target) and an identifier (a second target) thereof in an image, and simultaneously extracting an appearance visual feature (a first feature) of the connecting element and an identification code feature (a second feature) of the identifier; and performing topology construction processing based on the obtained target and characteristics to generate topological graph data capable of accurately representing the connection relationship of the electrical devices. And finally, comparing the topological graph data with a preset standard wiring template topological graph, and automatically generating judgment information for indicating whether the wiring connection state is correct or not according to a topological matching result. Therefore, misjudgment caused by artificial fatigue, negligence and experience difference is effectively avoided.

The utility model provides a gas insulated switchgear (GIS) gas chamber sulfur hexafluoride (SF6) micro-water density monitoring sensor, and relates to the technical field of high-voltage electrical equipment state monitoring and sensors. The sensor comprises a sensor main body, an immersion type probe, a micro heating module and a communication module, the sensor body is a sealed shell, and a data processing unit and a power interface are arranged in the sensor body. The immersion type probe penetrates through the bottom of the main body and is fixedly connected with and exposes the pressure, humidity and temperature sensor. The micro-heating module is fixed on the surface of the probe and electrically connected with the humidity sensor. And the data processing unit is integrated with a temperature compensation module and is in signal connection with the pressure and temperature sensor. And the communication module is arranged at the top of the main body, comprises an RS485 interface and is connected with the data processing unit to realize data transmission. The sensor is used for monitoring the micro-water density of SF6 gas in a GIS gas chamber, and solves the technical problem of how to realize high-precision and anti-interference real-time online monitoring of the micro-water density on the premise of not discharging the SF6 gas.

The invention belongs to the technical field of electrical equipment safety monitoring, and provides an intelligent wire and cable distributed optical fiber temperature measurement early warning method and system, and the method comprises the steps: laying a distributed optical fiber temperature sensor network along a cable, and synchronously demodulating the temperature and strain information based on a distributed optical fiber sensing principle; the temperature, the strain information and the load current are uploaded to a cloud platform through a wireless communication module; operating a time-space fusion diagnosis model driven by a cable physical mechanism on a cloud platform to distinguish and position an abnormal overheating section caused by a current Joule heating effect, insulation loss or contact resistance dramatic increase; and after the abnormity is confirmed, the cloud platform generates a control instruction for the abnormal overheating section to cut off power supply, and an intelligent self-healing process can be started. According to the invention, physical root identification, accurate positioning and safe self-healing of the cable overheating fault are realized, and the safety of cable operation is greatly improved.

The utility model provides an all-terrain vehicle which comprises a vehicle body, a cabin shell, a storage box and a plurality of groups of electric devices, the cabin shell is arranged on the vehicle body, a front cabin is formed by the cabin shell and the vehicle body, and an access hole is formed in the cabin shell. The storage box is installed at the access hole and detachably connected with the cabin shell, part of the storage box is located in the front cabin, and the multiple sets of electric parts are arranged in the front cabin. Through optimization design, it is ensured that the storage box and the electric parts have enough installation space in the front cabin, meanwhile, when the storage box is in a detached state, the storage box enters the front cabin from the access hole, and the original occupied space of the storage box in the front cabin can serve as the operation space for overhauling the electric parts arranged in the front cabin; therefore, the arrangement of the plurality of groups of electric parts in the front cabin can consider the installation of the storage box and the maintenance of the electric parts.

The invention discloses a modularly installed electric energy metering box, and relates to the technical field of electric energy metering boxes, the top and bottom of a main gas box are connected with a plurality of assembly gas heads, one side of the main gas box is provided with a plurality of assembly boxes, one side of each assembly box is uniformly provided with a plurality of heat dissipation holes, and two sides of the top and two sides of the bottom of each assembly box are connected with communicating sleeves; the middle of the communication sleeve is connected with a supporting pipe, one end of the supporting pipe is sleeved with an assembling nut, the assembling nut is connected with the adjacent assembling air head, and the other end of the supporting pipe is connected with an external air head. The external air head in the assembling heat dissipation assembly can be connected with the assembling nut, and double-layer installation of electrical devices can be achieved in the metering box; the assembling nut in the flexible expansion assembly can also be connected with the expansion air head, flexible installation of a small number of electrical devices is achieved, the two assemblies are installed in a modularized mode, the heat dissipation effect is guaranteed, and meanwhile the space utilization rate of the whole metering box is improved.

The invention relates to the technical field of power electronics, in particular to a multi-environment aging detection and evaluation method and system for an electrical device. A multi-environment aging detection and evaluation method for an electrical device comprises the following steps: S1, collecting environmental factor data and personnel activity data of a gallium nitride power device in various application scenes, and generating a test environmental stress sequence according to the environmental factor data and the personnel activity data; s2, testing the gallium nitride power device according to the test environment stress sequence, and monitoring aging parameters of the gallium nitride power device in real time; and S3, generating an aging feature vector based on the aging parameters, and judging an aging mechanism and confidence according to the aging feature vector and an aging mechanism judgment model. The aging mechanism of the device in different application scenes is judged by simulating environmental factors and personnel activity data of different application scenes, and decision support is provided for technicians engaged in device design and maintenance.

The invention relates to the technical field of electrical equipment fault diagnosis, in particular to an acoustic-electric joint detection method, system and device for internal defects of GIS equipment and a medium, and the method comprises the steps: synchronously collecting an ultrasonic signal detected by a grating fiber ultrasonic sensing module and an ultrahigh frequency electromagnetic wave signal detected by an ultrahigh frequency sensing module; performing feature extraction on the ultrasonic signal and the ultrahigh-frequency electromagnetic wave signal to obtain a first feature parameter and a second feature parameter respectively; based on the arrival time difference of the ultrahigh-frequency electromagnetic wave signal and the ultrasonic wave signal, calculating the initial space position of the defect by adopting a time difference positioning method; and performing conjoint analysis on the first characteristic parameter and the second characteristic parameter in combination with the initial space position of the defect so as to identify the defect type. Through the arrangement, sound and electricity detection information can be deeply fused, a novel joint detection method with mutual verification and mutual promotion of positioning and identification is realized, and the integrity, accuracy and reliability of GIS internal defect diagnosis are effectively improved.

The invention discloses a partial discharge signal feature extraction method and system, and the method comprises the following steps: collecting a current signal on a grounding loop cable of detected electrical equipment, and carrying out the preprocessing of the current signal; converting the preprocessed signal into a two-dimensional matrix, and performing singular value decomposition on the two-dimensional matrix to obtain a principal component; matrix reconstruction is carried out based on the principal component to generate a de-noising matrix, and the de-noising matrix is restored to a time domain signal sequence; performing discrete wavelet transform on the time domain signal sequence to obtain a multi-level approximation coefficient and a detail coefficient; the discrete wavelet transform selects a wavelet basis function from the candidate wavelet basis set based on a preset adaptive wavelet basis selection mechanism, and adaptively determines the number of wavelet decomposition layers based on the signal dominant frequency characteristics; and inputting the approximation coefficient and the detail coefficient into an inverse wavelet transform module to obtain a final partial discharge signal. According to the method, efficient, accurate and universal partial discharge signal feature extraction can be realized.

A battery includes a frame defining an interior space. The frame includes an inner layer including a material having a negative Poisson's ratio (NPR material), and an outer layer disposed on the inner layer such that the inner layer faces the interior space and the outer layer faces an exterior of the frame. The battery includes an electrolyte contained in the interior space of the frame; a positive electrode disposed in the interior space of the frame, the positive electrode including a positive electrode active material; and a negative electrode disposed in the interior space of the frame, the negative electrode including a negative electrode active material.

The invention discloses a fuel tank pressure sensor, and belongs to the technical field of automobile sensors, the fuel tank pressure sensor comprises a shell, a shell cover, a PCBA circuit unit and a ventilation unit, a monitoring channel is arranged in the shell, two sides of the monitoring channel are provided with communication connectors, the front end of the shell is provided with a wiring harness connector, the PCBA circuit unit is fixed in the shell, and the ventilation unit is fixed in the shell. The shell cover covers the outer shell, the ventilation unit is arranged on the shell cover, the PCBA circuit unit comprises a ceramic substrate and a circuit substrate with an electrical device, a detection hole communicated with a monitoring channel is formed in the outer shell, the ceramic substrate is bonded in the outer shell through a sealant, and the ventilation unit is arranged on the outer shell. The ceramic substrate is provided with a through hole corresponding to the detection hole, the circuit substrate is bonded above the ceramic substrate, and a monitoring chip is packaged in the circuit substrate. The device is high in reliability and low in manufacturing cost, and improves the accuracy and long-term stability of oil tank pressure detection.

Single band and multiband wireless antennas are an important element of wireless systems. Competing tradeoffs of overall footprint, performance aspects such as impedance matching and cost require not only consideration but become significant when multiple antenna elements are employed within a single antenna such as to obtain circular polarization transmit and / or receive. Accordingly, it would be beneficial to provide designers of a wide range of electrical devices and systems with compact single or multiple frequency band antennas which, in addition to providing the controlled radiation pattern and circular polarization purity (where required) are impedance matched without substantially increasing the footprint of the antenna and / or the complexity of the microwave / RF circuit interfaced to them, whilst supporting multiple signals to / from multiple antenna elements in antennas employing them. Solutions present achieve this through provisioning one or more capacitive series reactances discretely or in combination with one or more shunt capacitive reactances.

The utility model discloses a battery pack and a power utilization device, the battery pack has a first direction and a second direction which are intersected, and the battery pack comprises an exhaust assembly and a plurality of battery monomers arranged along the first direction; a pressure relief piece is arranged on one side of the battery monomer along the second direction; the exhaust assembly is arranged towards the pressure relief piece and is connected with the plurality of single batteries; the exhaust assembly comprises an exhaust part and a plurality of first flow guide parts, the exhaust part is provided with an exhaust channel, a first pressure relief hole and a plurality of exhaust holes which communicate with one another, the exhaust holes are formed at intervals in the first direction, and the first pressure relief hole is formed in one side of the exhaust holes; the exhaust hole is formed in one side, facing the battery monomer, of the exhaust part, and at least part of orthographic projection of the pressure relief piece on the exhaust part is located in the exhaust hole; the plurality of first flow guide parts are arranged in the exhaust channel and are staggered with the plurality of exhaust holes; and each first flow guide part inclines towards the direction close to the first pressure relief hole along one end far away from the battery monomer in the second direction and is arranged at an interval with the inner side wall of the exhaust channel.

This application relates to optoelectronic devices and their fabrication methods, as well as electrical devices and power generation devices. The optoelectronic device includes a perovskite layer comprising perovskite grains. The crystalline phases of the perovskite grains include cubic and non-cubic phases; the cubic phase accounts for more than or equal to 97% of the mass of the perovskite layer; the non-cubic phase includes at least one of tetragonal, orthorhombic, and other phases; the other phases account for less than or equal to 5% of the mass of the non-cubic phase; the tetragonal phase accounts for a higher mass of the non-cubic phase than the orthorhombic phase; and the dielectric constant of the perovskite layer is greater than or equal to 5. This optoelectronic device exhibits high energy conversion efficiency.

This invention discloses a battery, a battery pack, and an electrical device. The battery includes a casing, a core, a column, a first membrane, and a second membrane. The casing has an inner cavity, and the core is assembled within the inner cavity. The column supports the core to prevent it from collapsing. The column has a first cavity for storing a lithium replenishment medium and a second cavity for storing a fire-fighting medium. The first cavity has a first hole in its wall, and the second cavity has a second hole in its wall. The first membrane seals the first hole. When subjected to a first pressure, the first membrane ruptures, allowing the lithium replenishment medium in the first cavity to flow into the inner cavity through the first hole. The second membrane seals the second hole. When subjected to a second pressure, the second membrane ruptures, allowing the fire-fighting medium in the second cavity to flow into the inner cavity through the second hole. The second pressure is greater than the first pressure. The battery of this invention enables secondary lithium replenishment, improving the problems of short battery life and severe battery degradation. Furthermore, it has a fire-fighting function in the event of thermal runaway or rapid gas generation, ensuring the safety of battery use.

1. The name of the design product: intelligent socket (disc - BN - 002). 2. The use of the design product: for connecting power and electrical devices. 3. The design features of the design product: in shape. 4. The picture or photo that best indicates the design features: perspective view 1.

The application provides a carbon-based electrode material, a battery and a power utilization device, and the carbon-based electrode material meets the following requirements: a self-discharge curve of the carbon-based electrode material is obtained by performing self-discharge curve processing on the carbon-based electrode material, an initial voltage and a terminal voltage of the carbon-based electrode material are obtained according to the self-discharge curve, and a difference between the initial voltage and the terminal voltage is determined as a first voltage difference; a first transition voltage of the carbon-based electrode material is obtained by fitting the self-discharge curve through a plurality of preset functions, and a difference between the initial voltage and the first transition voltage is determined as a second voltage difference; and a ratio of the second voltage difference to the first voltage difference is greater than a preset ratio of 33.3%. The scheme can fully utilize the self-discharge curve characteristics of the material to screen the carbon-based electrode material, can more accurately screen the suitable carbon-based electrode material, and reduces the self-discharge loss of the selected carbon-based electrode material in actual application.

This invention relates to the field of battery signal acquisition technology, and discloses a battery pack and power supply device, including: a battery, the battery including a casing and terminals disposed on the casing; a busbar electrically connecting the terminals of two batteries; and a signal acquisition component including a first temperature acquisition module and a second temperature acquisition module, the first temperature acquisition module being electrically connected to the busbar and the second temperature acquisition module being electrically connected to the casing. This invention installs the first temperature acquisition module upside down and the second temperature acquisition module recessed to cooperate with the battery casing, thereby acquiring the casing temperature signal and reducing the space occupied in the height direction of the battery. By comparing the detection results of the first and second temperature acquisition modules, the heat generated during the current transmission process between the terminals and the busbar is determined, and thus the overcurrent capacity between the terminals and the busbar is determined to meet the requirements, ensuring the safety and cycle performance of the battery pack.

A method for manufacturing a TOPCon cell includes following steps: texturing a front side of an silicon wafer and then preparing a PN junction; forming a tunnel oxide layer, an intrinsic polysilicon layer, a doped polysilicon layer, and a silicon oxide mask layer in sequence on a back side of the silicon wafer, wherein the tunnel oxide layer is deposited by PEALD at a deposition temperature of 150° C. to 200° C., the doped polysilicon layer is deposited by PECVD, and the silicon oxide mask layer has a thickness of 10 nm to 40 nm; removing a wraparound silicon oxide mask layer material and a wraparound polysilicon layer material from the front side of the silicon wafer, and then removing the silicon oxide mask layer from the back side; and forming a front electrode on the PN junction and a back electrode on the doped polysilicon layer, respectively.

A device comprising a controllable switch and an NFC circuit is described. According to one embodiment, the controllable switch is configured to connect and disconnect an electrical load from a power supply. The NFC circuit is configured to generate a supply voltage based on a voltage induced in an NFC antenna and, in response to receiving a switch-on command, to use this supply voltage to generate a control signal for the controllable switch, causing it to connect the electrical load to the power supply. The electrical load is configured to control the switch so that it disconnects the electrical load from the power supply.

The invention relates to an electric vehicle sliding feedback consumption control method and system, and the method comprises the steps: triggering a downhill feedback consumption mode when a vehicle is in a downhill road section and the driving state of the vehicle meets a triggering condition; after the downhill feedback consumption mode is triggered, according to the accumulated driving distance of the vehicle on the current downhill road section, the electric devices are started in a grading mode to consume feedback current. The downhill feedback consumption mode is triggered when the vehicle is in the downhill road section and the driving state of the vehicle meets the triggering condition, and the electric devices are dynamically started in a grading manner according to the accumulated driving distance of the current downhill road section so as to consume the feedback current, so that the dynamic regulation and control of the downhill feedback current are realized; according to the invention, the feedback current which may flow back to the power battery originally is converted into effective energy for the working of the electric appliance, and the residual current is continuously consumed, so that the voltage accumulation effect caused by continuous charging in the long downhill process of the battery cell is effectively inhibited, and the technical phenomenon that the battery voltage is abnormally increased due to current overload is avoided.

1. The name of the design product: socket (TS-WR03US). 2. The use of the design product: for connecting power supply and electrical devices, and can be wireless charging for electronic devices. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a self-operated project safety control electronic locking device for a cold rolling finishing unit, and the device comprises a circuit board which is connected with an external power supply and is used for providing a power supply; the tablet computer is connected with the circuit board and is used for picture operation and system operation; the fingerprint identifier is connected with the tablet computer and is used for collecting fingerprint information; the fingerprint identification chip is connected with the fingerprint identifier and is used for processing fingerprint information; and the relay is respectively connected with the circuit board and the manual mechanical locking loop and is used for controlling the operation of the electric device. The invention further discloses a using method of the self-operated project safety control electronic locking device of the cold rolling finishing unit. According to the method, the safety of the operation process of the self-operated project is ensured, misoperation and errors of the hanging and picking process of the self-operated project are avoided, and the existing operation process of manual locking and hanging of a warning board of the self-operated project is replaced, so that man-made deviation does not occur in the hanging and picking process, and misoperation of other personnel is prevented.

An optical fiber detection case based on functional domain vertical layering is characterized in that a case body is in a cuboid shape, a top panel is detachable, a front panel is provided with a light source button, a power button and a case handle, and a rear panel is provided with a jack and a fan heat dissipation port. The interior of the case is divided into a first connecting area, a second connecting area, a third connecting area and a fourth connecting area through a first layering partition plate and a second layering partition plate. The second connection area is used for placing transmitting, modulating, coupling and detecting optical signal devices and optical fiber connectors; and the third connection area is used for placing an amplifying and detecting optical signal device. According to the utility model, through reasonable functional area division and structural design, the technical problems of electromagnetic interference, insufficient portability, poor external field adaptability and the like of a traditional chassis are effectively solved, and a novel hardware carrier is provided for engineering application of a distributed optical fiber sensing system.

An electrical device can include a body having a shape and including one or more components, and first and second electrodes implemented at respective locations of the body and configured to provide first and second engagements with a mounting surface and to allow a settling motion when the electrical device is positioned on the mounting surface. The electrical device can further include a third electrode implemented at a respective location of the body and configured to allow a limited range of the settling motion such that at an end of the limited range of the settling motion, the third electrode provides a third engagement with the mounting surface.

1. Name of the design product: double-sided power strip. 2. Use of the design product: for connecting power supply and electrical devices. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The invention discloses an anti-interference interphone capable of automatically adjusting blocking, which comprises a protective shell, a display module is arranged on the protective shell, a high-performance antenna is arranged at one end of the top of the protective shell, and a sensor module is integrally arranged on the high-performance antenna. A signal processing chip, a power management module, a storage module and a software algorithm module are arranged in an inner cavity of the protective shell, and information interaction is carried out between the protective shell and the signal processing chip through electric connection. According to the interphone capable of automatically adjusting blocking and resisting interference, blocking and resisting interference can be automatically adjusted in real time through the interphone, clear and stable communication can be kept in various complex electromagnetic environments, and no matter under strong electromagnetic interference generated by numerous electrical equipment in factory workshops or in various wireless signal interlaced environments in cities, the interphone can be used as a communication interface for the interphone. Interference signals can be effectively filtered, the accuracy and integrity of voice transmission are ensured, and the communication quality is improved.

This application provides a terminal post, a top cover assembly, a battery cell, a battery, and an electrical device, relating to the field of battery technology. The terminal post includes at least one first connecting portion, at least two second connecting portions, and a transition portion. The first connecting portion is used to connect with an electrical connector; the second connecting portion is used to connect with a tab. Each first connecting portion is disposed between two adjacent second connecting portions and connected to two adjacent second connecting portions. Along a first direction, the transition portion connects between the first and second connecting portions. Along a third direction, the length of the transition portion is less than the length of the first connecting portion and less than the length of the second connecting portion. This can reduce the occupied size in the width direction of the terminal post, leaving more space for the welding surface width of the first and second connecting portions, thereby reducing the overall size in the width direction of the terminal post and making it suitable for battery cells with limited design space in the top cover assembly.

A power machine (300, 400) may include a frame (310, 410), a lift arm (330, 430), and one or more electrical devices for controlling one or more working elements. An electrical tilt actuator (333, 433) may be secured to the lift arm (330, 430) to change the attitude of the implement carrier (372, 472), an electrical lift actuator (338, 438) may be secured to the frame (310, 410) to raise and lower the lift arm (334, 434), an electrical drive motor (326) may be mounted to the track frame (343) to move the track, or a battery assembly (322, 418) and an electrical control module (360, 420) may be secured to the frame (310, 410), including behind the operator station (455).