1385 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 an electrical equipment operation state monitoring method, system and terminal, full life cycle health management of equipment is realized through multi-dimensional perception and intelligent analysis, a composite sensor network can be constructed from the level of the method, and high-frequency current, ultrahigh frequency, fiber grating temperature vibration, multi-parameter gas and acoustic sensors are integrated. Electromagnetic characteristics, mechanical states, environmental parameters and voiceprint characteristics are covered; the adaptive signal processing technology performs classification and noise reduction on multi-source data, and the three-dimensional digital twin model realizes time-space fusion of a temperature field, a vibration field, an electric field and a sound field; a lightweight space-time convolutional network is deployed to fuse a time domain waveform, a spectrogram and spatial distribution characteristics for diagnosis, and a hidden semi-Markov model and a particle filter algorithm are combined to dynamically predict the residual service life of equipment. The system architecture comprises a self-organizing sensor network with edge computing capability, a time-sensitive industrial communication network and a containerized analysis engine, and supports mixed reality visual interaction.

A power machine can include a frame, a lift arm, and one or more electrical devices for control of one or more work elements. An electrical tilt actuator can be secured to the lift arm to change an attitude of an implement carrier, an electrical lift actuator can be secured to the frame to raise and lower a lift arm, an electrical drive motor can be mounted to a track frame to move a track, or a battery assembly and electrical control module can be secured to the frame, including rearward of an operator station.

The invention discloses an electrical fire real-time monitoring system based on a wireless sensor network, and relates to the technical field of electrical fire monitoring. The cloud monitoring platform is in communication connection with an electrical data acquisition module, an electrical fire abnormity analysis module, an abnormity early warning module, a node management configuration module and a visual monitoring module, and all the modules are in electric signal connection; the electrical data acquisition module is used for acquiring monitoring data of electrical nodes by using a deployed wireless sensor and transmitting the monitoring data to the cloud monitoring platform through a wireless communication technology, and the monitoring data comprises current, voltage, temperature, humidity and leakage current. Multi-parameter fusion monitoring is carried out through the wireless sensors deployed at the key nodes of the electrical equipment, compared with a traditional wired sensor, the wireless sensors do not need wiring, installation is flexible, early signals of an electrical fire can be captured more comprehensively, and the accuracy of fire early warning is remarkably improved.

The invention provides a positive pole piece, a secondary battery and an electric device. The positive pole piece comprises a current collector and a positive pole film layer located on at least one side of the current collector, the positive pole film layer comprises a first region and a second region, and the particle size distribution index of an active material in the first region is smaller than that of an active material in the second region; the particle size distribution index refers to the ratio of the standard deviation of the particle size of the active material to the average particle size, and the first region refers to a region where the vertical extension distance of the positive electrode film layer from the surface of one side close to the current collector to the direction of the positive electrode film layer is within h1; the second region is a region where the positive electrode film layer vertically extends from the surface of one side close to the current collector to the positive electrode film layer by a distance of h1 to H, H is the thickness of the positive electrode film layer, and h1 is smaller than H.

The utility model provides a battery monomer, a battery and a power utilization device, and belongs to the technical field of batteries. The battery monomer comprises a shell, an electrode assembly, a fixing piece, an electrode terminal and a first insulating piece, the housing has a wall portion. The electrode assembly is housed within the housing. The fixing piece is connected to the wall part and comprises a fixing part, and the fixing part is located on one side of the wall part in the thickness direction of the wall part. The electrode terminal is provided on the wall portion, and the electrode terminal is electrically connected to the electrode assembly. The first insulating piece is arranged between the electrode terminal and the fixing piece so as to insulate and isolate the electrode terminal and the fixing piece. The fixing part comprises a main body area and a thinning area which are connected with each other, the thinning area is farther away from the wall part than the main body area in the thickness direction of the wall part, the electrode terminal is provided with an assembling part extending to the position between the thinning area and the wall part, and the projection of the main body area and the projection of the assembling part are not overlapped; the thinned region is configured to cooperate with the wall portion to restrict movement of the electrode terminal in a thickness direction of the wall portion.

The utility model provides a heat exchange assembly, a box body, a battery and an electric device. The heat exchange assembly comprises a conveying mechanism, a flow dividing mechanism and a heat exchange plate, the conveying mechanism comprises a main body and a plurality of connecting parts which are arranged at intervals in the first direction and communicate with the main body, the flow dividing mechanism is arranged on the side, in the second direction, of the conveying mechanism and communicates with the connecting parts, and the heat exchange plate is arranged on the side, in the third direction, of the flow dividing mechanism. A heat exchange flow channel in the heat exchange mechanism is communicated with the shunting mechanism, so that the external environment is communicated with the heat exchange plates through the transmission mechanism and the shunting mechanism to realize input and output of a heat exchange medium in the heat exchange assembly, current collectors do not need to be independently arranged at two ends of a single heat exchange plate, the production cost of the battery is reduced, and the size of the heat exchange assembly is reduced; and the battery energy density is improved.

The utility model provides an electrode assembly, a battery monomer, a battery and a power utilization device. The electrode assembly comprises a first pole piece and a second pole piece which are opposite in polarity. The first pole piece comprises a first pole piece main body, the first pole piece main body comprises a first current collecting main body and a first active material layer, the first current collecting main body comprises two first surfaces which are oppositely arranged along the thickness direction of the first current collecting main body and a first end surface which is connected with the two first surfaces, and the first active material layer is arranged on the first surfaces. The electrode assembly further comprises an insulating part connected to the first pole piece body, at least part of the insulating part is arranged on the outer side of the first end face in the first direction, and the first direction is perpendicular to the thickness direction. The insulating part can separate the burrs on the first end face from the second pole piece, so that the risk of conduction between the burrs and the second pole piece is reduced, the possibility of thermal runaway caused by short circuit is reduced, and the reliability of the single battery is improved.

Competing tradeoffs of overall footprint, weight, and performance impact the design of antennas for many applications. However, those for compact portable devices or mobile platforms exploiting global navigation satellite systems these are further compounded by seeking good performance over a wide angular range. Accordingly, it would be beneficial to provide designers of a wide range of electrical devices and systems with compact broadband antennas which offer a low vertical profile relative to that provided by the common filar element approaches for high precision applications. Accordingly, through a combination of a dipole, a parasitic element, and additional ground elements to a convention ground plane the inventors provide broadband high performance antenna designs with low profile and low overall footprint.

The utility model discloses a battery and a power utilization device, the battery comprises a box body assembly, a battery monomer and a heat exchange assembly, the box body assembly comprises a box body and an expansion beam, the expansion beam is arranged in the box body, the battery monomer is arranged in the box body and abuts against the expansion beam, and the heat exchange assembly comprises a first heat exchange piece; the first heat exchange piece is arranged in the box body and located between the battery monomers and the box body, the first heat exchange piece is used for exchanging heat with the battery monomers, and the first heat exchange piece and the expansion beam are arranged at intervals, so that the first heat exchange piece and the expansion beam are arranged in a heat insulation mode. According to the battery provided by the embodiment of the invention, the loss of heat or cold of the first heat exchange piece can be reduced, and the heat management performance is improved.

The invention discloses a secondary battery and a power utilization device, the secondary battery comprises a shell, an electrode assembly, a top cover plate, an insulating part and a convex part, the top cover plate is connected with the shell, and a liquid injection hole is formed in the top cover plate; the insulating part is connected with one side, facing the electrode assembly, of the top cover plate; the protruding piece comprises an extending part and a blocking part. The extending part is connected with the side, away from the top cover piece, of the insulating piece. The blocking part is connected to the side, away from the insulating part, of the extending part, and the orthographic projection of the blocking part on the top cover piece covers at least part of the liquid injection hole. At least one flow guide hole is formed in the extension part and is communicated with the liquid injection hole; the sum of the area of the at least one flow guide hole is S1 mm < 2 >, the area of the liquid injection hole is S2 mm < 2 >, and S1 / S2 is larger than or equal to 1 and smaller than or equal to 4. After the secondary battery meets the range that S1 / S2 is larger than or equal to 1 and smaller than or equal to 4, the liquid injection efficiency of the electrolyte is further improved while the strength of the protruding pieces is improved, and the production yield of the secondary battery is remarkably increased.

The invention provides a distribution network electrical equipment defect identification method based on image voiceprint multi-modal data. Comprising the following steps: constructing an image complex mapping model according to a mapping relation between a light distribution signal and a light source position and a light source light intensity, and establishing first relation knowledge among background light intensity, local light intensity change polarity, absolute brightness change and equipment internal defect characteristics; constructing a voiceprint complex mapping model according to the mapping relationship between the voiceprint signal and the internal defect feature of the equipment, and establishing second relationship knowledge between the local sound pressure change polarity, the frequency change, the absolute sound pressure change and the internal defect feature of the equipment according to the voiceprint complex mapping model; and constructing an electrical equipment defect identification model according to the image complex mapping model, the first relation knowledge, the voiceprint complex mapping model and the second relation knowledge, and identifying the defect of the distribution network electrical equipment by adopting the electrical equipment defect identification model. The problem that an existing equipment defect identification method is low in defect identification accuracy is solved.

The invention relates to a secondary battery, a positive electrode active material, and a power device. The secondary battery comprises a positive pole piece, the positive pole piece comprises a positive active material, the positive active material comprises secondary particles, and the secondary particles are agglomerated particles comprising a plurality of primary particles; the primary particles comprise a positive electrode active material; in any secondary particle, the direction of the center of the secondary particle towards the surface is recorded as the X direction; the X direction penetrating through the center of any one primary particle is marked as the longitudinal direction; in any one primary particle, the longest axis of the primary particle is recorded as an a axis; the secondary particles comprise oriented secondary particles; in the oriented secondary particles, based on the total number of the primary particles in the oriented secondary particles, the proportion of the number of the primary particles in the oriented secondary particles, in which an included angle alpha 1 is formed between the a axis and the longitudinal direction, is F1, 15 degrees < = alpha < = 45 degrees, and F1 > = 60%. The secondary battery has high energy density, good dynamic performance and long cycle life.

The utility model discloses a battery monomer, a battery pack and a power utilization device, the battery monomer comprises a shell, an electrode assembly and an adapter, the shell is provided with a first electrode terminal and a second electrode terminal, the electrode assembly comprises a first tab and a second tab which are opposite in polarity, and the adapter is connected with the first tab. The adapter is arranged between the electrode assembly and the shell and comprises a first adapter part and a second adapter part, the first adapter part is electrically connected with the first electrode terminal and the first tab respectively, and the second adapter part is electrically connected with the second electrode terminal and the second tab respectively; and at least parts of the first switching part and the second switching part are overlapped in the axial direction of the battery monomer. Therefore, the over-current area of the first switching part and the over-current area of the second switching part are increased, the technical problem that the over-current area of the switching piece is small is solved, and the over-current capacity of the switching piece is improved.

The utility model discloses a battery and an electric device. The battery comprises a box body; the battery monomer row comprises a plurality of battery monomers arranged along a first direction, and the plurality of battery monomer rows are stacked along a second direction to form a battery monomer array and are placed in the box body; at least one strip-shaped component is arranged on the surface of one side, deviating from the bottom plate of the box body, of the single battery row in the third direction, the strip-shaped component extends in the first direction and is connected with at least one single battery in the single battery row, and the first direction is perpendicular to the second direction and the third direction in pairs. Therefore, the number of the inner beams of the battery box body can be reduced under the condition that the overall structural strength of the battery is considered, the overall volume utilization rate of the battery is improved, and the overall weight and cost of the battery are favorably controlled.

Systems and methods receive, by an electrical device coupled to an elevator car of an elevator and via device component(s) electrically coupled to the electrical device, analog signal(s), wherein the electrical device comprises processor(s), and wherein the analog signal(s) comprise a measurement derived from one or more elevator activities. The analog signal(s) are converted, via the electrical device, into digital data and preprocessing is performed thereon via the processor(s) of the electrical device. The preprocessed data is wirelessly transmitted, via a peripheral device of the electrical device, to remote server(s) of a cloud computing environment, the preprocessed data being transmitted, at least in part, for data aggregation and to facilitate access by user(s) for elevator asset management, wherein the remote server(s) are configured to perform additional processing of the preprocessed data as part of the data aggregation.

The embodiment of the utility model provides a connector, a battery and an electric device. The connector comprises a housing assembly, wherein the housing assembly defines a containing cavity and a first plugging port communicated with the containing cavity; the conductive terminal is arranged in the accommodating cavity and comprises a main body part, and a first conductive contact part and an occlusion part which are connected with the main body part; the first plug-in port is used for inserting a sampling wire into the accommodating cavity, the first conductive contact part is used for abutting against and conducting connection with the sampling wire, and the occlusion part is used for occluding and fixing the sampling wire. According to the invention, the probability of relative movement between the sampling wire and the conductive terminal under the vibration environment or external force interference can be reduced, the first conductive contact part can be electrically connected with the sampling wire, the probability of open circuit between the conductive terminal and the sampling wire is reduced, and the stability of data transmission is improved.

The invention provides a GIS partial discharge positioning method based on multichannel signal processing, and relates to the field of fault diagnosis of high-voltage electrical equipment, and the method comprises the steps: S1, collecting multichannel electromagnetic wave signals generated by partial discharge through a plurality of ultrahigh frequency sensors distributed in GIS equipment; s2, preprocessing the collected electromagnetic wave signal, including noise suppression and time difference calculation; s3, based on the time difference and amplitude information of the multi-channel electromagnetic wave signals, calculating the position of a partial discharge source by adopting a fusion algorithm and combining a double-end positioning formula; and S4, displaying the position and the discharge intensity of the partial discharge source through the monitoring host, and generating a related diagnosis report. According to the invention, precise positioning of the partial discharge source in the GIS equipment can be realized, so that the positioning precision and the anti-interference capability are improved, and safe operation and maintenance of the GIS equipment are ensured.

The embodiment of the invention provides a cylindrical battery, a battery pack and an electric device. The cylindrical battery comprises a shell, an electrode assembly and an end cover, the end cover comprises a base body and an end part, the base body comprises a first part and a second part, and the projection of the first part surrounds the projection of the second part in the axial direction. The first part is in insulated connection with the shell; the second part is connected with the first part and the end part; the first portion includes a first surface facing the electrode assembly, and the second portion includes a second surface facing the electrode assembly, the second surface being closer to the end portion than the first surface in the axial direction. And the second surface of the second part is closer to one side of the end part, so that a larger accommodating space is favorably provided for the electrode assembly in the shell of the cylindrical battery, the volume of the electrode assembly is favorably increased, and the energy density of the cylindrical battery is improved.

The invention provides a battery and a power utilization device. The structural performance of a mounting structure in the battery can be improved. The battery includes: a battery cell; the box body is used for containing the battery monomers, the box body comprises a first wall and a second wall which are oppositely arranged, the first wall and the second wall intersect with the first direction, a first cross beam is arranged between the first wall and the second wall, the first cross beam comprises a third wall which intersects with the first direction and is close to the first wall, and the second cross beam comprises a second wall which intersects with the second direction and is close to the second wall. A gap is formed between the third wall and the first wall, and the first cross beam is provided with a first through hole extending in the first direction; and the mounting structure is configured to at least partially penetrate through the first through hole and abut against the third wall in the gap.

The utility model discloses clothes processing equipment, which is characterized in that a wireless power supply module is used for supplying power to an electric device in a roller, and a wireless transmitting unit and a wireless receiving unit are not required to be connected through a lead, so that the problem that the wireless receiving unit rotates along with the roller to influence line connection is not required to be considered. The power supply convenience of the power utilization device in the roller can be improved. Besides, the wireless receiving unit and the wireless transmitting unit are both mounted outside the air passing cavity, so that the wireless transmitting unit and the wireless receiving unit can be prevented from being influenced by high temperature in the air passing cavity, and the working stability of the wireless power supply module is improved.

The utility model relates to a pole structure, a top cover assembly, a battery monomer, a battery and a power utilization device, and relates to the technical field of batteries, the pole structure comprises a mounting carrier, a pole, a fixing ring and a sealing member, the mounting carrier is provided with a mounting hole, and the mounting carrier comprises a first abutting wall; the pole comprises a first metal layer and a second metal layer which are stacked, and the first metal layer at least comprises a first step surface; the fixing ring sleeves the peripheral wall of the second metal layer and comprises a first end wall; the sealing element sleeves the peripheral wall of the first metal layer; the sealing piece comprises a first sealing wall and a second sealing wall which are oppositely arranged, the first sealing wall abuts against the first abutting wall, and the second sealing wall abuts against the first step face and the first end wall. According to the pole structure, the top cover assembly, the battery monomer, the battery and the electric device, under the condition of ensuring good sealing performance, the material consumption of the composite metal body is reduced, and the production cost is effectively reduced.

The invention provides a secondary battery and a power utilization device, the secondary battery comprises a negative pole piece, and the negative pole piece comprises a negative current collector and a negative film layer which is located on at least one surface of the negative current collector and comprises a negative active material. The negative electrode active material comprises a first carbon-based material and a second carbon-based material, the first carbon-based material comprises an outer region and an inner region located on the inner side of the outer region, and the outer region is a region formed by extending the particle surface of the first carbon-based material to the interior of the particle by a distance of 2.5 [mu] m; in a sectional view of the first carbon-based material, the total pore area of the outer region is recorded as S1, and the total pore area of the inner region is recorded as S2, and S2gt; s1, and the graphitization degree of the first carbon-based material is greater than the graphitization degree of the second carbon-based material. The secondary battery provided by the invention has excellent cycle performance and dynamic performance while having high energy density.

An adaptive IoT power plug system for intelligent load management and remote control, consisting of: a power plug housing configured to be inserted between a power outlet and an electrical appliance; an embedded sensor array comprising at least one voltage sensor, at least one current sensor, and at least one power sensor and configured to continuously monitor the electrical parameters of the connected device; a microcontroller unit (MCU) operatively coupled to the sensor array and configured to execute a load prioritization technique that dynamically determines power allocation based on real-time consumption data and user-defined priority levels for one or more connected loads; a semiconductor switching module electrically connected to the MCU and configured to selectively interrupt or modulate the power supply to the connected device based on commands from the load prioritization technology; a wireless communication module integrated into the MCU for bidirectional data exchange via at least one wireless protocol selected from Wi-Fi, Zigbee or Bluetooth Low Energy; a user interface that can be accessed remotely via a mobile or web application and enables the configuration of load priorities, real-time monitoring of power consumption, scheduling of device operation, and manual override of switching commands; and a power management subsystem including a power harvesting module configured to provide supplemental power to the system's electronic components, thereby reducing dependence on the main power source; The system autonomously adjusts the power distribution between multiple connected devices to load fluctuations and predefined user priorities in order to optimize energy efficiency and prevent overloading of the circuit.

The invention relates to a wireless intelligent electrical equipment networking and cooperative control method and system, equipment and a readable storage medium. According to the method, a heterogeneous wireless communication network is constructed, implicit channel conflicts caused by multi-protocol signal superposition are detected in real time, a channel backoff window is dynamically optimized in combination with global interference characteristics of a device node topological graph and a reinforcement learning algorithm, and a time slot allocation strategy is optimized through a dynamic optimization algorithm. Finally, cooperative control of a multi-protocol device group in a high-density scene is achieved, the problem of channel competition conflicts caused by the fact that cross-protocol signals cannot be sensed in a traditional method is effectively solved, communication reliability and real-time performance of device cooperative control are remarkably improved, meanwhile, the device operation state is automatically adjusted according to scene requirements, and the method is suitable for large-scale popularization and application. And the technical effect of optimizing the overall efficiency of the system is achieved.

The utility model relates to a battery and a power utilization device, the battery comprises a box body and a battery monomer, and the box body comprises a box body; the at least two limiting beams and the box body are enclosed to form an accommodating space; the limiting beam comprises a first beam side face and a second beam side face, the second beam side face is configured to be a vertical plane used for abutting against the large face of the battery single body, and the second beam side face and at least part of the first beam side face are arranged at an included angle; and the fixing pieces are connected among the limiting beams along the first direction. The battery monomers in the accommodating space are restrained through the limiting beams, the first beam side faces abut against the large faces of the battery monomers, and at least part of the first beam side faces are obliquely arranged towards the second beam side faces, so that the limiting beams stably support and restrain expansion on the battery monomers; in addition, the fixing pieces can limit the limiting beams in the first direction, the probability that the limiting beams topple over under the action of expansion deformation of the battery monomers is reduced, and the expansion constraining force on the battery monomers is further improved.

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 present application relates to a battery module, a battery and an electrical device. The battery module includes a plurality of battery cells, a buffer mechanism and a busbar. The plurality of battery cells are arranged along a first direction; the buffer mechanism is provided at at least one end of the plurality of battery cells along the first direction; the busbar is provided at at least one side of the plurality of battery cells along a second direction, and the pole ears of each battery cell are connected to the busbar, and the second direction intersects with the first direction; wherein the busbar has a guide portion, and the guide portion is movably connected to a portion of the buffer mechanism along the first direction. The busbar in the battery module can guide part of the buffer mechanism to speed up the movement speed of the buffer mechanism along the first direction when it is subjected to an external force. In this way, there is no need to provide additional guide members, which reduces the number of components required in the battery module and speeds up the assembly efficiency of the battery module.

The utility model provides a battery device and a power utilization device, the battery device comprises a battery monomer, a box body, a second pressure relief mechanism and a condensation part, the battery monomer is provided with a first pressure relief mechanism, the box body is provided with a containing cavity, the battery monomer is contained in the containing cavity, the box body is provided with an exhaust channel, and the exhaust channel is communicated with the containing cavity. The first pressure relief mechanism is arranged in the box body, the second pressure relief mechanism is arranged in the box body, the exhaust channel is configured to guide emissions discharged by the first pressure relief mechanism to the second pressure relief mechanism, and the condensation part is arranged in the exhaust channel and comprises condensation nucleus particles. According to the battery device provided by the invention, the content of harmful substances discharged into the environment under the condition of thermal runaway of the battery device is reduced, so that the pollution to the environment under the condition of thermal runaway of the battery device is reduced.

The invention provides a secondary battery and a power utilization device. The secondary battery comprises a negative electrode piece, the negative electrode piece comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector, the negative electrode film layer is provided with a first surface away from the negative electrode current collector and a second surface opposite to the first surface, and the thickness of the negative electrode film layer is marked as H, the area from the first surface of the negative electrode film layer to the thickness range of 0.3 H is marked as the first area of the negative electrode film layer, the area from the second surface of the negative electrode film layer to the thickness range of 0.3 H is marked as the second area of the negative electrode film layer, the first area comprises a first negative electrode active material, and the second area comprises a second negative electrode active material; the first negative electrode active material comprises a substrate and a carbon coating layer formed on at least part of the surface of the substrate; the lithium insertion platform voltage of the first negative electrode active material is 0.118-0.140 V, and the gram volume of the second negative electrode active material is greater than that of the first negative electrode active material.