116 results about "Local current" patented technology

The invention discloses a distributed current limiting method, device and system and a storage medium. The method comprises the following steps: periodically generating and broadcasting a concurrent suggestion interval based on a local operation state; concurrence suggestion intervals generated by the service instance and from other service instances are received, intersection operation is carried out, a global feasible interval is obtained, the upper limit is the minimum value of the upper limits of all the concurrence suggestion intervals, and the lower limit is the maximum value of the lower limits of all the concurrence suggestion intervals; and determining a local current limiting threshold based on the global feasible interval and the local dynamic weight. Each service instance receives the concurrence suggestion interval and then performs intersection operation to determine the global feasible interval, so that the upper limit is monotonically not increased and cannot be exceeded, the security invariant constraint chain is obtained, a central coordinator or a global synchronous clock is not needed, and the global concurrence quantity does not exceed the security upper limit under any network condition; and determining a local current-limiting threshold value based on the global feasible interval and the local dynamic weight, and realizing refined and adaptive current-limiting management.

The invention discloses a cooperative control system and method for an electrolytic hydrogen production electrolytic tank and an assembly rack, and belongs to the technical field of cooperative control, and the cooperative control system comprises an electrolytic hydrogen production first execution path determination module, a first cooperative control execution module and a second cooperative control execution module. The working parameters of the electrolytic cell and the posture of the assembly rack can be dynamically adjusted based on the electrode bubble stability index and the electrolytic cell operation imbalance index, so that the bubble shielding effect and local current density fluctuation are relieved in time, and the balance of the electrolysis states of left and right polar plates is ensured; and the scale factor and the continuous tracking monitoring duration are controlled by matching the adjusting rhythm, so that the self-adaptive monitoring and quick response to the running state of the electrolytic cell are realized. The operation stability of the electrolytic tank and the uniformity of the hydrogen yield are improved, and the electrolytic hydrogen production efficiency is optimized, the service life of equipment is prolonged and the self-adaptive intelligent control of the whole system is realized.

The invention discloses a negative current collector of a negative-electrode-free sodium metal battery as well as a preparation method and application of the negative current collector, carbon spheres with spherical hollow cavities and open through holes are prepared, a current collector base material is coated with the carbon spheres to serve as the negative current collector, and the prepared negative current collector is used for preparing the negative-electrode-free sodium metal battery. The closed cavity in the hollow carbon sphere provides a confinement space for sodium storage, and the volume change in the circulation process can be effectively buffered. The open through holes in the shell of the hollow carbon sphere form a high-speed network for ion transmission, so that the surface migration kinetics of sodium ions is greatly improved, and uniform deposition is promoted. According to the negative current collector, the local current density is reduced synergistically, and sodium is guided to deposit in the sphere preferentially, so that the generation of dead sodium in the circulation process is reduced, and the coulombic efficiency of the negative-electrode-free sodium metal battery is improved.

The embodiment of the invention provides a three-dimensional vertical porous lithium metal negative electrode, a preparation method and a battery, a periodic three-dimensional vertical hole array is arranged on the surface of one side of lithium metal with the thickness of 30-50 [mu] m, and the depth of the three-dimensional vertical holes is 10-30 [mu] m; the content and distribution of carbon nanotubes in an electroplated metal layer are adjusted through three-section composite electrodeposition, so that on one hand, rich ion / electron transmission channels are provided, the local current density is remarkably reduced, and the electrochemical reaction kinetics is accelerated; an electric field and an ion concentration field formed on the inner wall of the hole can guide lithium ions to preferentially deposit at the bottom and in the hole, so that disordered growth of lithium dendrites on the surface is effectively inhibited, and finally, a volume expansion buffer space is provided; and moreover, a space is reserved for deposition of lithium in the circulation process, and stress can be dispersed and absorbed.

The utility model discloses a six-groove cup-shaped electrode contact seat structure and a vacuum arc-extinguishing chamber, a first electrode contact seat and a second electrode contact seat are respectively provided with three first chutes which are inclined towards the same direction, and the chutes provide multi-element transmission channels which are clear in guiding for current, so that the current is dispersed, multiple strands of current flow in parallel, and the current transmission efficiency is improved. And meanwhile, through the interval length difference between the first skewed slot and the second skewed slot, the situation that the flow guide section at the root of the skewed slot is limited, the local current density is too large, and the resistance is too high is avoided, and the overall resistance of the loop is reduced in an all-around mode. On the basis of an existing six-groove cup-shaped longitudinal magnetic electrode, through the differentiated long and short contact finger structure design, on the basis of ensuring the on-off performance, the diversion of the electrode is effectively improved, and the requirement of a low-resistance vacuum arc-extinguishing chamber is met.

The invention provides a solid-state electrolyte with a bionic microstructure interface, a preparation method thereof and a solid-state battery, the solid-state electrolyte with the bionic microstructure interface comprises a solid-state electrolyte matrix, and at least one side surface of the solid-state electrolyte matrix is provided with a bionic microgroove structure. The bionic micro-groove structure is a tree-root-shaped fractal topology network structure, and comprises a main groove and a secondary groove which is branched and extends from the main groove; the ratio of the depth to the width of the main groove and the ratio of the depth to the width of the secondary groove are both larger than or equal to 0.3. The bionic micro-groove structure has a tree-root-shaped fractal structure, a three-dimensional microstructure of a multi-stage interconnection network is formed on the surface of the solid electrolyte, the solid-solid contact area can be effectively increased, the local current density can be reduced, and deposited lithium can be mechanically anchored, so that the purposes of low interface impedance and efficient dendritic crystal suppression are synchronously realized.

The utility model relates to a movable spring assembly and a relay. The movable spring assembly comprises a movable contact, a current-carrying piece and a movable spring piece, the movable contact is connected with the movable spring piece through the current-carrying piece, the connecting part of the movable contact and the current-carrying piece and the connecting part of the movable spring piece and the current-carrying piece are distributed at intervals, and the movable contact is used for being in contact with a static contact assembly in the relay; the end, close to the current-carrying piece, of the movable reed can move relative to the static contact assembly, so that the movable contact can move in the direction close to or away from the static contact assembly. The movable contact spring provides good elastic deformation capacity for the movable contact spring assembly, the local current-carrying density of the thin-sheet movable contact spring is high, so that local heating of the movable contact spring is serious, a current-carrying piece is arranged between the movable contact spring and the movable contact, the movable contact is made to be far away from the movable contact spring, and the influence of heating of the movable contact spring on the movable contact is reduced. The movable contact is connected with the movable reed through the current-carrying member, and the current-carrying member is large in current-carrying density and high in current-carrying capability, so that the temperature rise near the movable contact is reduced.

The utility model discloses a composite pole piece and a full-tab high-nickel cylindrical battery cell passing a needling test at a lower temperature, the composite pole piece comprises foil layers, a macromolecule base film layer, an electrode slurry layer and a welding foil layer, the two end surfaces of the macromolecule base film layer are respectively provided with one foil layer, and the electrode slurry layer is provided with one welding foil layer. An electrode slurry layer and an empty foil area are arranged on the working end face of the foil layer; the welding end of the welding foil layer is welded to the empty foil area, and the free end of the welding foil layer exceeds the foil layer and is exposed out of the foil layer. According to the utility model, the structure of the battery cell pole piece is changed, the composite aluminum foil is used as a base material, the two end surfaces of the composite aluminum foil are coated with the positive active material, and the empty foil area of the composite aluminum foil is welded with the common aluminum foil extension tab area; after the cell is punctured, the local current density is sharply increased, so that the temperature of a punctured point rises, the macromolecular base film layer is melted and shrunk, and the metal coating on the macromolecular base film layer is pulled away from a punctured body to form a physical isolation strip, so that the short-circuit resistance is improved to a kiloohm level, the short-circuit current is inhibited, and the needling passing rate of the cell is improved.

The invention discloses a power grid grounding simulation method and system based on multi-parameter coupling modeling. The method comprises the following steps: acquiring soil resistivity, lightning stroke current waveform data and morphological structure information of a grounding electrode at different depths and geographic positions; constructing a recursive coupling current equation based on time history feedback, and recursively calculating a local grounding current distribution function at the current moment and at the spatial position by adopting a multi-channel dynamic weighting mechanism based on the recursive coupling current equation; fractal dimensions are dynamically calculated according to the soil resistivity and the morphological structure information of the grounding electrode, and a fractal current distribution function is established based on the fractal dimensions and a local grounding current distribution function; the local current value and the fractal current distribution function are fused, the total grounding current is dynamically calculated in a time integration mode, and step voltage is calculated in combination with a current response function, the soil resistivity and the lightning stroke waveform; and determining the state of the grid grounding system based on the total grounding current and the step voltage.

The invention discloses a sodium metal negative electrode material with a three-dimensional gradient sodium-philic interface as well as a preparation method and application of the sodium metal negative electrode material, and belongs to the technical field of sodium metal batteries. According to the sodium metal negative electrode material and the preparation method thereof, a metal net is coated with sodium-philic metal with concentration gradient through an electro-deposition method, then the surface of the sodium metal is covered with the sodium-philic metal, and the sodium metal negative electrode with the three-dimensional gradient sodium-philic interface can be obtained; the metal sodium can be guided to realize uniform and compact deposition from bottom to top, the large specific surface area is beneficial to reducing the local current density, the sufficient space reserved by the metal grid can realize high-capacity sodium ion deposition, meanwhile, the volume expansion and the structure failure of the electrode are avoided, and finally, dendrite-free growth and excellent cycle life of the sodium metal negative electrode are realized. The preparation method has the characteristics of simple preparation process and low requirements on preparation environment.

The application discloses a kind of distributed current limiting method, device, system and storage medium, including periodically generating and broadcasting concurrent suggestion interval based on local running state;Receive concurrent suggestion interval generated by itself and from other service instances and carry out intersection operation, obtain global feasible interval, upper limit is the minimum value of the upper limit of all concurrent suggestion intervals, lower limit is the maximum value of the lower limit of all concurrent suggestion intervals;Determine local current limiting threshold based on global feasible interval and local dynamic weight.The intersection operation is carried out after each service instance of the application receives concurrent suggestion interval to determine global feasible interval, ensure that upper limit is monotonically not increased and upper limit cannot be exceeded, obtain safe invariant constraint chain, without central coordinator or global synchronous clock, in any network condition, guarantee that global concurrency is not more than safe upper limit, determine local current limiting threshold based on global feasible interval and local dynamic weight, realize fine, adaptive current limiting management.

The application discloses a hanging neck type massage instrument, which comprises a machine body, a liquid storage tank, electrode pieces, a pipeline component and a control piece. Each of the electrode pieces is provided with a liquid outlet hole. The pipeline component comprises a first branch pipeline and a second branch pipeline. The first branch pipeline is connected with the liquid storage cavity and the liquid outlet hole of one of the electrode pieces, and the second branch pipeline is connected with the liquid storage cavity and the liquid outlet hole of the other electrode piece. In the first working state, the control piece cuts off the liquid flow in the first branch pipeline and / or the second branch pipeline, and makes the conductive liquid discharged from the electrode piece connected with the first branch pipeline and the conductive liquid discharged from the electrode piece connected with the second branch pipeline be insulated from each other. In the second working state, the conductive liquid in the liquid storage cavity is discharged from the corresponding liquid outlet holes through the first branch pipeline and the second branch pipeline. The hanging neck type massage instrument can effectively eliminate the stinging feeling caused by the excessive local current.

The utility model relates to the technical field of breast pumps, in particular to a heating breast pump which comprises a cover body and a main machine connected with the cover body, the cover body is provided with a heating assembly used for heating and a cover body connector connected with the heating assembly, and the main machine is provided with a main machine connector communicated with the cover body connector. And the cover body connector and / or the host connector are / is provided with an annular conducting end for increasing the conducting contact area. According to the utility model, the conductive contact area is increased by arranging the annular conductive connection end, so that a wider and stable path can be provided when current passes through, the current density of the current at a contact point can be effectively reduced, the situation that the contact point is broken down due to overlarge local current is avoided, the current can continuously and stably pass through the connector, and the service life of the connector is prolonged. Normal power-on work of the heating assembly is maintained, and the problem of heating function failure caused by poor contact is reduced.

The invention relates to the technical field of metal material surface treatment, in particular to an aluminum alloy casting and an anode hard oxidation treatment method thereof.The method comprises the following steps that the aluminum alloy casting is arranged in an anode in an electrolytic bath to be subjected to anode hard oxidation treatment, and a bidirectional power source is adopted for alternately providing positive pulse current and negative pulse current; the total current value provided by the bidirectional power supply is equally divided into a plurality of soft start sections which are increased section by section. Through reasonable control and alternate action of the positive pulse current and the negative pulse current, the growth thickness uniformity of film layers at different parts of a part in single positive and negative pulse circulation is improved, and meanwhile, a current curve in a current stabilization stage is more stable in combination with a stepped power supply mode; the accumulation speed of the current density difference between the protruding part and the sunken part is delayed, ablation caused by too large local current density difference is avoided, and the effects of guaranteeing the film forming speed and improving the film forming quality are achieved.

The invention provides a Cu3Sn / Cu6Sn5 composite electrode with a nano-porous structure as well as a preparation method and application of the Cu3Sn / Cu6Sn5 composite electrode. The preparation method comprises the following steps: removing surface oxide layers of copper and tin metal sheets and aluminum metal wires, weighing copper, tin and aluminum, smelting to obtain an alloy ingot, cutting the alloy ingot into metal sheets, removing surface oxide layers of the metal sheets, and putting the metal sheets into a KOH solution for dealloying treatment to prepare the Cu3Sn / Cu6Sn5 composite electrode with the nano-porous structure. The electrode is composed of two intermetallic compounds of Cu3Sn and Cu6Sn5, has a hierarchical porous structure, and comprises a macroporous channel with the pore diameter of 100-400 nm and mesopores with the pore diameter of 5-50 nm distributed on a macroporous ligament. The hierarchical porous structure of the composite electrode and efficient charge transfer at a heterogeneous interface can effectively reduce local current density, guide zinc ions to uniformly deposit, inhibit dendritic crystal growth and improve reaction kinetics and structural stability, the composite electrode is applied to an aqueous zinc ion battery as a negative electrode, and the service life of the aqueous zinc ion battery is prolonged. The cycle life and the rate capability of the battery can be obviously improved.

The invention discloses a multi-tab battery cell and a multi-tab battery, the multi-tab battery cell comprises at least one tab unit, the first end of each tab unit is connected with a core package, and the other end of each tab unit is abutted against the edge of a connecting piece and then extends along the width direction of the connecting piece; and the length of the tab unit close to the edge of the connecting piece in the width direction of the connecting piece is smaller than that of the tab unit far away from the edge of the connecting piece. The tab units with different lengths are utilized, the tab unit close to the edge of the connecting piece is shorter, and the tab unit far away from the edge of the connecting piece is longer, so that each tab unit is not folded between the connecting piece and the core package, the abnormal increase of local current density of the tab units is avoided, the local overheating of the battery is avoided, and the reliability of the battery is improved. And the service life of the battery is prolonged.

The application discloses an insulation polarization current information extraction method, system, device and medium, and relates to the technical field of power equipment insulation state monitoring. The prior art only relies on single time point current data, ignores wide time domain dynamic change information, and causes the problem of incomplete evaluation. The application comprises the following steps: placing an insulation material sample in a three-electrode system to measure polarization current data in a wide time domain window; fitting the current data with a multi-exponential relaxation function to eliminate the interference of local current overshoot and extract the decay trend; extracting a transient characteristic quantity representing a transient process and a quasi-steady state characteristic quantity representing a quasi-steady state process from the fitted data; normalizing the two characteristic quantities to eliminate dimensional differences; substituting the normalized characteristic quantities into an S-shaped logic function to calculate a comprehensive state index; and outputting the comprehensive state index as characteristic information for evaluating the state of the insulation material. The technical scheme can comprehensively and accurately extract insulation polarization current information and evaluate the insulation state.

This invention belongs to the field of solid polymer electrolyte technology, specifically relating to a conductive and flame-retardant polymer solid electrolyte, its preparation method, and its application. The preparation method involves first dissolving chopped aramid fibers in an organic solvent and then leaching them to obtain an ANF membrane; then coating the surface of the ANF membrane with an EG / PEO / LiTFSI electrolyte solution and vacuum drying to obtain an EG / PEO@ANF composite solid electrolyte. ANF can reduce the crystallinity of PEO and improve the crystallinity of Li... + Migration behavior in solid electrolytes; as a reinforcing framework, it effectively improves the mechanical strength and thermal stability of solid electrolytes and inhibits the growth of lithium dendrites; the introduction of EG as a flame-retardant filler significantly improves the thermal safety performance of solid electrolytes under high temperature or combustion conditions; it can also distribute charges uniformly in the electrolyte through its conductivity, suppress the phenomenon of excessively high local current density, improve the contact of the electrode / electrolyte interface, reduce the interface impedance, and effectively improve the ionic conductivity of the battery.

The invention relates to the technical field of metal structure corrosion resistance data processing, in particular to a simulation calculation evaluation method for corrosion resistance of a multi-welding-seam area, which comprises the following steps: establishing a three-dimensional finite element model according to welding seam geometry and material parameters of a base metal / heat affected zone / weld nugget area; directly importing the obtained continuous residual equivalent stress field into a three-dimensional finite element model in the form of an interpolation function or an external field, and constructing stress dependent electrochemical parameters in an electrode dynamic boundary condition; after parameter setting is completed, electrode surface corrosion potential distribution and local current density are solved; and evaluating the corrosion resistance of the welding seam area according to the current density distribution, the corrosion rate field and the time-varying corrosion depth data obtained by simulation. According to the scheme, the method can be used for judging the sensitive position of the multi-welding-seam area, the corrosion resistance of the multi-welding-seam area can be evaluated more systematically and visually, the possible corrosion sensitive position can be recognized in advance, and risks can be found more timely in engineering application.

The invention discloses a cycle-by-cycle current pre-estimation protection method and a cycle-by-cycle current pre-estimation protection system for a multiphase TLVR circuit, and after pre-storage of current change rates under different working conditions is completed, the cycle-by-cycle current protection system orderly executes the following steps under unified scheduling of a state machine: each phase of inductive current is sampled by an ADC and then sent to an inductive current real-time calculation module; meanwhile, a PWM signal is received; when a certain phase of PWM signal is at a high level, the inductive current real-time calculation module performs cycle-by-cycle current calculation by taking a digital current value obtained by sampling as an initial value, and outputs an estimated current value; the estimated current value is compared with a preset CBC protection threshold value, and then the conduction time of the phase is adjusted; the current increment is calculated in each clock period, the maximum current value which can be reached in the PWM conduction period is predicted, and protection is carried out in time. According to the invention, the problem of local current peak caused by the coupling effect in the TLVR circuit can be effectively solved, and the influence of driving delay is eliminated.

This invention relates to the field of cover plate technology, providing a battery cover plate and a power battery. The battery cover plate includes a cover plate body, terminals penetrating the cover plate body, and an upper plastic component. The terminals have an elliptical cross-section. The upper plastic component is provided with a relief structure for providing deformation compensation during the riveting of the terminals. By designing the relief structure, this invention provides release space for the riveting deformation of the terminals and riveting blocks. The relief structure can buffer the compressive stress during riveting, preventing the upper plastic component from cracking or breaking in areas of concentrated stress such as the front and sides of the riveting holes, ensuring the continuous effectiveness of the insulation function of the upper plastic component, and preventing internal short circuits in the battery due to insulation failure. Without increasing the number of terminals or expanding the overall size of the cover plate, the elliptical terminals can directly replace the traditional circular terminals, achieving a larger effective conductive cross-sectional area within the same installation boundary. At the same time, the current distribution within the elliptical cross-section is more uniform, reducing local current concentration phenomena.

The invention relates to the technical field of lithium ion batteries, in particular to a negative pole piece, a preparation method of the negative pole piece, a lithium ion battery and an electric device. Through the arrangement of the first artificial SEI layer and the second artificial SEI layer which are in component gradient design, interface charge distribution can be adjusted by utilizing high electron conductivity of the first artificial SEI layer, local current concentration is reduced, and cooperative optimization of ion transmission and structural stability is realized in cooperation with high ion conduction and mechanical strength of the second artificial SEI layer; by controlling the ratio of Ra1 to Ra0 and the ratio of Ra2 to Ra0 in the range of the specification, the problem of poor synergy of an artificial layer, a negative electrode substrate and a natural SEI layer is greatly improved, and the interface adhesion is remarkably improved, so that the negative electrode better adapts to the volume change of the electrode in the long-term cycle process, the growth of lithium dendrites and the side reaction of electrolyte are inhibited, and the service life of the lithium ion battery is prolonged. Therefore, the cycle performance of the battery is obviously improved.

The present disclosure relates to a fault detection method for a power transmission line (101) in an alternating current (AC) power transmission system (100). The method comprises: - obtaining local voltage phasors and local current phasors of a local position of the power transmission line; - obtaining transmission properties for the power transmission line from the local position to a remote position at a distance from the local position and for associated devices, wherein the transmission properties comprise series parameters, shunt parameters, and the distance from the local position to the remote position; - estimating, for the remote position, estimated remote voltage phasors and estimated remote current phasors on basis of the local voltage phasors, the local current phasors, and the transmission properties; - receiving, via a communication link (115), data relating to remote phase currents and determining measured remote current phasors; - determining whether a fault has occurred or not on basis of at least one of a combination of the estimated and measured remote current phasors and a combination of the estimated and measured remote voltage phasors; and - determining whether a fault is a true fault or a false fault, including: • comparing a first phase angle and a first magnitude of an estimated remote positive sequence current phasor with a second phase angle and a second magnitude of a measured remote positive sequence current phasor; • determining, on basis of the comparison, whether there is a significant channel asymmetry on the communication link; and • determining that the fault is a false fault if there is a significant channel asymmetry.

The utility model relates to the technical field of batteries, and provides a battery cover plate and a battery. The battery cover plate comprises a cover plate main body and two pole parts arranged on the cover plate main body, the pole part comprises two pole pieces which are mutually spaced and mutually symmetrical; the pole pieces are arranged on the cover plate main body in a penetrating manner and are mutually insulated from the cover plate main body; one side of the cover plate main body is sunken to form an accommodating groove for accommodating a positive tab and a negative tab of a battery cell, a mounting notch is formed in the side wall of the accommodating groove, one end of the pole piece is arranged on one side, back to the accommodating groove, of the cover plate main body, and the other end of the pole piece is arranged in the accommodating groove and is exposed in the mounting notch; the two pole pieces of one pole part are both used for being connected with a positive lug, and the two pole pieces of the other pole part are both used for being connected with a negative lug. The two pole pieces in the pole part can improve the current passing efficiency, so that excessive heat generated by local concentration of the current is avoided, and the stable work of the battery is ensured; and the mounting gap expands the operation space on the cover plate main body, so that the operation convenience of wrapping the pole piece with the mylar film is improved.

The utility model provides a panel and a photovoltaic module, and relates to the technical field of photovoltaic power generation. The panel comprises a substrate; the first rough layer is arranged on the backlight side of the substrate; the first ink layer is arranged on the backlight side of the first rough layer, and the value range of the area ratio of the first ink layer on the first rough layer is 30%-70%. According to the invention, the loss of charging power caused by light reflection of a panel in the photovoltaic module is reduced, the charging efficiency of the photovoltaic cell in the cell packaging plate is improved, and the local current limiting of the photovoltaic cell is reduced.

The invention relates to the technical field of energy storage batteries, and discloses a liquid metal battery electrode interface morphology evolution simulation method, system, equipment and medium, and the method comprises the following steps: constructing a multi-physical field simulation model coupling electrochemical reaction, substance transfer and a level set interface; the method comprises the following steps: firstly, calculating current distribution in an electrode and an electrolyte according to an external working condition, and obtaining local current density at a positive electrode-electrolyte interface by utilizing a Butler-Volmer kinetic equation; then, the deposition velocity is converted into the deposition velocity of an intermetallic compound according to the Faraday's law; and finally, dynamically simulating the evolution process of the positive electrode interface morphology in the charging and discharging process by solving a level set equation driven by the deposition velocity. The method can effectively predict the deposition behavior of the solid intermetallic compound under different working conditions, and provides a key theoretical tool for understanding the short circuit mechanism in the battery and optimizing the stability of the battery.

The utility model relates to a solid-state zinc ion battery device, which comprises a packaging shell, a zinc negative electrode, an ion selective interface coating, a composite solid electrolyte layer and a positive electrode material which are connected in sequence are arranged in the packaging shell; the zinc negative electrode comprises a conductive substrate, the conductive substrate is of a three-dimensional porous structure, the porosity of the three-dimensional porous structure is 50%-70%, the aperture of the three-dimensional porous structure is 10-100 microns, and the surface of the conductive substrate is uniformly covered with nano zinc particles. The conductive substrate with a three-dimensional porous structure is adopted as the zinc negative electrode, so that the local current density can be effectively reduced, the dendritic crystal growth problem is solved, the safety performance of the battery device is improved, the energy density of the battery device is remarkably improved by the composite solid electrolyte layer, and the contact interface between the composite solid electrolyte layer and the zinc negative electrode is improved. The ion selective interface coating is adopted to reduce the interface impedance, so that the interface stability is improved, and side reactions are reduced. The battery can be widely applied to the fields of intelligent energy storage, wearable equipment, electric vehicles and the like.

The invention provides a pot and a manufacturing method thereof. The pot comprises a non-metal substrate and a magnetic conductive layer formed on the non-metal substrate, and the magnetic conductive layer comprises a non-ferromagnetic metal layer connected with the non-metal substrate and a non-ferromagnetic metal remelting layer formed on the outer side of the non-ferromagnetic metal layer. According to the cookware, the thermal stress of the obtained non-ferromagnetic metal remelting layer is obviously smaller than that of the magnetic conductive layer made of a ferromagnetic metal material, the situation that the magnetic conductive layer collapses from the non-metal base body due to thermal stress deformation can be avoided, and therefore the cookware with the good magnetic conductive performance and the long magnetic conductive service life can be obtained; and the obtained non-ferromagnetic metal remelting layer has fewer pore defects, and the current distribution uniformity of each region of the magnetic conductive layer during use can be improved, so that the influence on the service life of the magnetic conductive layer due to local melting or oxidation caused by local concentration of current can be avoided.

The invention relates to an optoelectronic device with a semiconductor layer stack comprising a planar first current transport layer of a first doping type, a two-dimensional active layer, and a second current transport layer of a second doping type. A first conductive contact layer is arranged on the first current transport layer opposite at least a first section of the active layer, and a second conductive contact layer is arranged on the second current transport layer opposite a second section of the active layer. To increase a local current density in an active region of the active layer that is partially shared with or adjacent to the first and second sections of the active layer, the first section and the second section are spatially offset from each other.

A system includes a first intelligent electronic device (IED) of an electric power delivery system. The first IED may measure a local current and a local voltage, transmit a first signal indicative of the local current and voltage measurements to additional IEDs via one or more communication channels, receive one or more additional signals indicative of remote current and voltage measurements from each of the additional IEDs, determine a respective asymmetry of each of the communication channels based on the local current and voltage measurements and the remote current and voltage measurements, determine a total asymmetry based on the respective asymmetries, compare the total asymmetry to one or more threshold relationships between operating currents and restraining currents, each of the one or more threshold relationships comprising a slope value, and perform a control function based on the comparison.