664 results about "Fuse (electrical)" patented technology

The invention discloses a power supply circuit, a power supply method, a server, a product and a medium, and relates to the technical field of server power supply, the total power demand of the server is dispersed through the parallel design of multiple power panels, the bus current of a single board connected to a first voltage is reduced to the safe bearing range of an MOS tube, the impact risk is reduced, and the service life of the server is prolonged. The electronic fuse is matched with the single-board power to set an overcurrent protection threshold value, and the short-circuit protection response time is shortened; each board is independently provided with a power supply brick to realize second voltage localization conversion and single board output current reduction, a multi-board output end combined power supply design is combined, a heat source is dispersed to eliminate heat accumulation, the through-current capability is multiplied through a parallel path, and the heat dissipation and electrical design feasibility of the circuit board is improved. The technical problems of MOS tube over-limit, overcurrent protection delay, circuit board heat accumulation and difficult through-flow caused by large current brought by a power supply in a high-power server are solved, and the technical effects of enhancing power supply reliability and optimizing energy efficiency are achieved.

The invention relates to the technical field of electrical equipment detection, and discloses an electrical equipment real-time state live detection method and system, and the system comprises a non-contact multi-source sensing array, an edge calculation unit, a high-frequency pulse excitation module, a self-adaptive installation structure, an intelligent diagnosis platform, and a self-energy-taking power supply unit. When electrical equipment state live-line detection is carried out, infrared thermodynamic characteristics, ultraviolet corona intensity and ultrasonic discharge signals are fused and collected through a non-contact multi-source sensing array, multi-parameter real-time sensing under the live-line condition is achieved, the problem of signal distortion caused by electromagnetic interference in traditional detection is solved, and the accuracy of state parameter extraction is improved; and meanwhile, the multi-dimensional feature data is subjected to standardization processing in combination with an edge calculation unit, so that the system can eliminate interference of environmental factors on detection results, the consistency of evaluation results under different working conditions is guaranteed, and state diagnosis errors are reduced.

The invention discloses an ultra-miniature patch fuse structure and a production process thereof. A fuse comprises a ceramic substrate, an inner electrode part, a terminal electrode part, a fuse wire part and a covering protection layer. An inner electrode groove is formed in the side wall of the ceramic substrate, and the inner electrode part comprises a first inner electrode and a second inner electrode; the first inner electrode and the second inner electrode are respectively provided with a fuse wire fixing groove. According to the production process, inner electrode grooves are formed in the two ends of a ceramic substrate, a first inner electrode and a second inner electrode are constructed through metallization wall-hanging treatment, a fuse part is inserted into a fuse fixing groove and connected through thermal ultrasonic or hot pressing bonding, and a protection layer is printed and cured to enhance the insulation performance. According to the invention, through cooperation of the fuse wire fixing grooves, accurate limitation and anti-drop protection of fuse wire component connection points are realized, and the structural stability and the electrical connection reliability between the fuse wire component and the first inner electrode and between the fuse wire component and the second inner electrode are improved.

The invention provides a control method and system for an energy storage PCS with an AC / DC circuit breaker and a storage medium, and the method comprises the steps: firstly, synchronously collecting the electrical parameters of a DC side and an AC side, and carrying out the preprocessing of the collected data, so as to form a standardized electrical matrix; then, all parameters in the electrical matrix are cyclically compared with corresponding early warning thresholds, first-level thresholds, second-level thresholds and fusing thresholds in a multi-level threshold mapping table; if the pre-warning threshold value is exceeded, a log is recorded, if the pre-warning threshold value is exceeded, self-healing operation is executed, if the pre-warning threshold value is exceeded, turn-off operation is executed, and if the pre-warning threshold value is reached, physical fusing is triggered; meanwhile, all operation logs are recorded, and the threshold mapping table is dynamically optimized by analyzing log data; according to the method, the fault response speed and the protection precision are improved through multi-level threshold serial comparison and a cooperative protection mechanism, the stability and the reliability under different working conditions are enhanced through the adaptive learning capability, and meanwhile, the whole life cycle cost is reduced.

The invention provides a board card and a server, and belongs to the technical field of servers. The board card provided by the invention is applied to the server. The board card is any one of a 60 fan backboard, a 80 fan backboard or a PCIE adapter board; the board card comprises a first type of connector, a second type of connector, a third type of connector and a CPLD (Complex Programmable Logic Device); the first type of connector is electrically connected with the third type of connector through a voltage and current power detection module and an electronic fuse in sequence; the second type connector is connected with the voltage and current power detection module and the CPLD; the CPLD is also connected with the electronic fuse; when the board card is the 60 fan backboard, the 80 fan backboard and the PCIE adapter board, the pin distribution rules of the CPLD are consistent, and the control logic of the CPLD firmware of the CPLD is consistent. According to the board card and the server provided by the invention, the source code development time and the firmware maintenance cost can be saved.

A fuse-less ignition system for fireworks. An ignitor module is provided that is insertable into a firework and includes: a first end having an interface adapted to reside on an exterior surface of the firework for receiving a plug; a set of electrical contacts adapted to receive electricity from the plug; a heat element coupled to the electrical contacts and adapted to heat in response to received electricity; and a cavity adjacent to the heat element containing a pyrotechnic material, the pyrotechnic material adapted to ignite in response to a heating of the heat element.

The present invention belongs to the technical field of smart charging piles. Disclosed is a highly integrated smart charging pile, which aims to solve the problem whereby, when an open fire occurs in a smart charging pile, the open fire cannot be extinguished rapidly, and easily leads to the burnout of and damage to the charging pile. The highly integrated smart charging pile comprises a smart charging pile body, wherein a steel cylinder is fixed to the top of one side of the outer side wall of the smart charging pile body, and an output end of the steel cylinder passes through the smart charging pile body, and is connected to a U-shaped pipe in a penetrating manner. In the present invention, by means of a fuse wire provided therein, after the fuse wire is blown by an open fire, a movable electrical contact block can be in contact with a static electrical contact block to start an electric push rod; and by means of a gear and a rack provided therein, a valve can be opened, and carbon dioxide in the steel cylinder can then enter the U-shaped pipe and is discharged into the smart charging pile body through an exhaust hole, such that the open fire at the position where the smart charging pile body is connected to a plug connecting wire can be extinguished, thereby avoiding the situation where the charging pile is burnt and damaged when the open fire cannot be extinguished in a timely manner.

The invention discloses an electronic fuse circuit and a control method thereof, a vehicle and an electric device. The electronic fuse circuit comprises a current transmission path with a controllable switch, a detection circuit and a control circuit, the current transmission path is used for connecting a load to a power supply node, and the controllable switch is used for connecting or disconnecting the current transmission path according to a driving signal; the detection circuit is used for detecting electrical parameters of the current transmission path and outputting corresponding sensing signals; the control circuit is used for outputting a driving signal for turning off the controllable switch under the condition that any one sensing signal reaches or exceeds a preset parameter; wherein the electrical parameters of the current transmission path comprise electrical parameters provided by the power supply node to the load and working parameters of the controllable switch. And when any one of the parameters exceeds the expectation, the current transmission path is disconnected, so that the electronic fuse circuit realizes multi-parameter protection, and the function is not single any more.

The invention belongs to the technical field of batteries, and discloses a cover plate assembly and a battery, the cover plate assembly is connected with a pole group, the pole group is connected with a tab, the cover plate assembly comprises a cover plate body, a pole, lower plastic and a connecting piece, and the pole is arranged on the cover plate body; the lower plastic is arranged on one side, facing the pole group, of the cover plate body; the connecting piece is arranged on the side, facing the pole group, of the lower plastic, the connecting piece comprises a first welding part, a second welding part and a fusing part, the first welding part is connected with the pole, the second welding part is connected with the tab, the fusing part is arranged at the minimum section of the connecting position of the first welding part and the second welding part, and the tab is electrically connected with the pole through the connecting piece. Thus, the fusing part is located at the minimum cross section, the fusing part can be fused at the first time under the condition of abnormal overcurrent or high temperature, further accumulation of heat is prevented, electric connection between the pole group and an external circuit is rapidly cut off, and the safety performance of the high-capacity battery cell is improved.

An electric junction box to facilitate the supply of power from a battery to an electric device, including an outer case having an open bottom opposite of an open top. A pair of terminals are fixed within the outer case and spaced apart from each other. A top cover is configured to close the open top and a bottom cover is configured to close the open bottom. A fuse cover assembly is disposed within the outer case, the fuse cover assembly including a base having a top surface and a bottom surface opposite of the top surface, a tower disposed on the top surface and configured to hold a spring, and an activation tab disposed on the bottom surface. The bottom cover is configured to engage the activation tab so as to position the spring between the pair of terminals, completing the electrical connection and allowing the flow of power through the electric junction box.

An electrical connection box includes a housing and a busbar attached to the housing. The housing includes a shared fuse mounting portion on which at least two fuses including large and small fuses of mutually different sizes are to be mounted. The fuse mounting portion includes: a large input-side fixing portion to which a large input terminal of the large fuse is to be fixed; a large output-side fixing portion to which a large output terminal of the large fuse is to be fixed; a small input-side fixing portion to which a small input terminal of the small fuse is to be fixed; and a small output-side fixing portion to which a small output terminal of the small fuse is to be fixed. The small input-side fixing portion and the small output-side fixing portion are arranged between the large input-side fixing portion and the large output-side fixing portion.

A bus bar includes a bus plate for integrating battery cores and an electrically connected VSH component of the bus plate. The bus board has several connections connected to the positive or negative electrodes of the battery cells. Rows and insulation layers cover both sides of the connection rows. The VSH assembly includes a first circuit board that includes connecting lines and insulating films covering both sides of the connecting lines. One end of the battery core is connected to the corresponding connection line through a fuse, and the fuse is arranged on the corresponding insulation. On the outside of the film and the insulating layer, several welding windows are provided in the insulating film and the insulating layer. The connection lines and connection rows form soldering pads at corresponding soldering windows.

The invention discloses a quick response type temperature fuse which comprises a shell, a bimetallic strip arranged on the shell, a tripping device, a first electrode, a second electrode and an electrical breaking device arranged between the first electrode and the second electrode in a bridging mode. The two ends of the tripping device abut against the movable end of the bimetallic strip and the electrical breaking device respectively. The bimetallic strip is close to the shell; when the bimetallic strip is heated to deform, the tripping device and the electrical breaking device are pushed to be separated from the abutting state. The electrical breaking device is kept in a conducting state under the action of external force applied by the tripping device, and the electrical breaking device is in a disconnected state when the external force is removed. According to the invention, the advantages of two technologies of a bimetallic strip and a low-melting-point alloy are integrated, the defects of the two technologies are overcome, the user experience is improved, and the product performance is also greatly improved.

The utility model discloses a quick response type temperature fuse. The quick response type temperature fuse comprises a shell, a bimetallic strip, a tripping device, a first electrode, a second electrode and an electrical breaking device, wherein the bimetallic strip, the tripping device, the first electrode and the second electrode are arranged on the shell; the electrical breaking device is arranged between the first electrode and the second electrode in a bridging manner; the two ends of the tripping device abut against the movable end of the bimetallic strip and the electrical breaking device respectively. The bimetallic strip is close to the shell; when the bimetallic strip is heated to deform, the tripping device and the electrical breaking device are pushed to be separated from the abutting state. The electrical breaking device is kept in a conducting state under the action of external force applied by the tripping device, and the electrical breaking device is in a disconnected state when the external force is removed. According to the utility model, advantages of two technologies of a bimetallic strip and a low-melting-point alloy are integrated, disadvantages of the two technologies are overcome, user experience is improved, and product performance is greatly improved.

A power distribution management integrated assembly of a battery system, a battery pack, and an automobile are provided and include a structure assembly (10), including a base (11) and a copper bar component (12); an electrical assembly (20), including a fast charging relay assembly (21), a main relay assembly (22), and a fuse (23) all arranged on the base (11) and all electrically connected to the copper bar component (12); and a hardware circuit assembly (30), including a control plate (31), a sampling component (32), a pre-charging resistor (33), and a pre-charging relay (34), the control plate (31) being arranged on the base (11), and the pre-charging resistor (33) and pre-charging relay (34) being integrated on the control plate (31), the fast charging relay assembly (21), main relay assembly (22), and fuse (23) being all electrically connected to the control plate (31).

The invention relates to the technical field of thermal fuses, in particular to a thermal fuse, a carrier tape, an onboard, a protection device and a manufacturing method. The temperature fuse comprises a first electrode, a second electrode, a temperature sensing alloy and a shell. An accommodating space is formed in the shell; the first electrode and the second electrode are respectively provided with a first end part and a second end part which are opposite; the first end part of the first electrode and the first end part of the second electrode are oppositely arranged in the accommodating space at an interval; the temperature sensing alloy is positioned in the accommodating space and is electrically contacted with the first end part of the first electrode and the first end part of the second electrode respectively; through holes are formed in the positions, located at the first end of the first electrode and the first end of the second electrode, of the shell respectively. Through the arrangement, the product size is reduced while the welding quality is improved, and the stability and the performance of the product are effectively improved.

A valve-device (VD) for a vehicle-braking-system (VBS), and a VBS. A VD for a VBS, having first / second control-units (CU), which are electrically connectable to the VD, which includes a valve-unit (VU) with an actuator for actuating the VU, a valve housing (VH) for the VU, and an error protection module (EPM) outside the VH. The EPM includes first / second supply-ports (SP) for electrical attachment to the first / second CUs, first / second main-ports (MP) for electrical attachment to the first / second CUs, a first connection port (CP) electrically connected to the first / second SPs, for electrical connection to the actuator, a second CP electrically connected to the first / second MPs, for electrical connection to the actuator, first and second electric protective circuits (EPC). The first EPC is electrically connected between the first / second SPs, and the first CP. The second EPC is electrically connected between the second CP and the first / second MPs. An EPC includes an electrical fuse-device and / or a diode-element connected in series to the respective supply / main ports.

The invention relates to the technical field of power system detection, in particular to a fuse wire breakage detection method and system for a single-phase isolation lightning protection device. According to the method, firstly, a complex state formed by two states is separated out, and the characteristics of the complex state are focused. The method comprises the following steps: firstly, counting abnormal moments and constructing an abnormal range, analyzing electrical characteristics in a power grid from the range, analyzing an amplitude reduction trend under each electrical dimension in the abnormal range, quantizing amplitude abnormal parameters, and comparing the amplitude abnormal parameters among three phases to obtain the abnormal amplitude of the power grid. And obtaining the disconnection probability according to the frequency change amplitude of the three-phase power supply in the abnormal range. And obtaining the overall broken line probability by using the broken line probabilities under the two electrical dimensions to judge the broken line of the fuse. According to the method, the power grid resonance state and the fuse disconnection state can be effectively distinguished through feature extraction under different electrical dimensions in a complex state and feature comparison among all items, and accurate detection of fuse disconnection is achieved.

The invention relates to the technical field of battery protection, and discloses a secondary temperature protection circuit and a battery management system. A first positive electrode port and a second positive electrode port of the two-stage temperature protection circuit are electrically connected to form a charging and discharging loop, and a first control port is used for receiving a first-stage control signal; the protection unit is connected in series to the charging and discharging loop, and the protection unit is in a closed state in a normal state; the primary protection control circuit is electrically connected with the control end of the protection unit and is used for controlling the protection unit to be switched to an off state according to the primary control signal; the secondary protection control circuit is used for driving the primary protection control circuit to control the protection unit to be switched off when the temperature of the battery unit exceeds a preset temperature threshold value; according to the invention, primary protection standby can be realized in a normal state, and mistaken-contact-preventing circuit shielding secondary protection can be realized; when a permanent fault occurs, primary protection is triggered, and shielding is removed; when the temperature exceeds a threshold value, the temperature sensing switch is switched on, the secondary protection drives the fusing device, and dual protection is achieved.

To provide a protection element which has a reflow-resistant property, can maintain a low electric resistance as well after a reflow, and has a lead-free fuse element formed of a single alloy.SOLUTION: The fuse element is formed of a single alloy material as an Sn-Ag-Cu three-dimensional alloy. A flux for assisting a welding operation is applied on the fuse element. The silver content is 20-30 mass%, the copper content is 2-10 mass%, and the balance is Sn.SELECTED DRAWING: Figure 1

A first electrical connection box20 includes a housing body 31 open on an upper side Z1, a first terminal portion 50 provided in an edge part inside the housing body 31, a first side cover 70 arranged to project outward from the housing body 31 from a part corresponding to the terminal portion 50, and a fuse 92 provided inside the first side cover 70 and to be electrically connected between a third external power supply and the terminal portion 50.

The present application relates to pole-mounted circuit breaker technical field, disclose a kind of pole-mounted primary-secondary fusion intelligent circuit breaker, including the terminal fixedly connected with wiring terminal in the top of circuit breaker, the isolating knife is rotatably connected with one side of circuit breaker, further comprising: protection box, fixedly connected in the bottom of circuit breaker, cavity is opened in protection box, the fuse is electrically connected with the bottom of circuit breaker, the fuse is passed through cavity and is used to be connected with arc-extinguishing chamber electrically connected, the opposite side of cavity is provided with pressure relief piece respectively;Control panel is movably connected in cavity, the side of cavity inner wall surface is provided with conducting terminal relative to control panel, conducting terminal is electrically connected with wiring terminal, protection box one side is fixedly connected with control box, control box is provided with control assembly, the control end of control assembly is connected with control panel, to make control panel switchable towards or away from the direction of conducting terminal direction movement;Wherein, when control panel moves towards conducting terminal, conducting terminal is electrically connected with fuse. It can effectively improve the safety when circuit breaker arc-extinguishing chamber overhauls.

A contactor including a first electrical contact, a second electrical contact, and a movable bridge displaceable between a closed position and an open position, the contactor further including: a lower arc guide including a first portion connected to the first electrical contact, and a second portion connected to the second electrical contact, an upper arc guide including a first portion facing the first portion of the lower arc guide, a second portion facing the second portion of the lower arc guide, and a fuse connecting the first portion and the second portion of the upper arc guide.

An integrated field output terminal assembly for traffic controller cabinets includes a circuit board carrying high-density flash-transfer relays and output terminals on a front side, and a short-circuit protection subassembly on a rear side. The protection subassembly has rows of plug-in fuse holders electrically connected through the board to incoming power channels from high-density switch packs, with surge suppressors located between fuse sections. An insulating panel, spaced by standoffs, shields the rear circuitry while providing labeled openings for rapid fuse access. A swing-down mounting bracket lets the board pivot within the cabinet for tool-less inspection and replacement of fuses. By placing circuit protection on the same footprint as the output board, the assembly eliminates separate fuse panels and bulky harnesses, cutting cabinet volume, material cost, and service time while safeguarding switch packs against shorts, lightning, and wiring faults.

The invention relates to a protection device (1) for protecting a mixed electrical apparatus (M) configured to be electrically connected to an LVDC network as well as to an HVDC network, the protection device (1) comprising a first connector (C1) configured to be connected to the LVDC network, a second connector (C2) configured to be connected to the mixed electrical apparatus (M), the second connector (C2) being connected to the first connector (C1) by a power supply line, a third ground connector (C3) connected by a ground line to the power supply line at a connection point (CX), at least one first diode (D1), mounted in reverse on the ground line between the connection point (CX) and the third ground connector (C3), and at least one first fuse (F1), mounted on the power supply line, between the connection point (CX) and the second connector (C2).

This utility model relates to an ultra-thin rolled copper stamped fuse assembly. The fuse assembly includes a sheet copper substrate made of rolled copper with a thickness in the micrometer range, a first PI thermosetting film and a second PI thermosetting film respectively covering the upper and lower surfaces of the sheet copper substrate; the sheet copper substrate has a wavy fuse portion with a line width of 0.15±0.02mm. This utility model uses a high-precision die-cutting method to punch the ultra-thin rolled copper foil, directly forming a fuse semi-finished product. In particular, the extremely fine fuse portion is punched in one step, avoiding defects such as edge deformation caused by multiple punchings, ensuring stable dimensions and performance of the fuse portion. High-speed rotary die-cutting is then used for efficient and precise production, encapsulating the fuse portion within the film material, exposing the opening area and end area for electrical connection, improving production efficiency and subsequent use efficiency. The overall production efficiency can be increased to 5000pcs / H, and the yield rate to approximately 95%.

The invention discloses a high-temperature fusing fuel gas ball valve, a fuel gas safety control system and an installation method, and relates to the technical field of fuel gas ball valves.The high-temperature fusing fuel gas ball valve comprises a valve body assembly provided with a gas inlet channel, a gas outlet channel and a valve cavity; the valve ball is arranged in the valve cavity; the high-temperature fusing mechanism is arranged at an inlet of the air inlet channel and comprises a fusing support, a fusing valve element and a fusing spring, the fusing valve element and the fusing support are fixed through low-temperature welding flux, the welding flux is melted during overtemperature, and the fusing spring pushes the fusing valve element to achieve hard sealing cut-off; the overflowing cut-off mechanism comprises an overflowing valve element, an overflowing support, a cut-off spring and a sealing gasket, and when the flow exceeds the limit, the overflowing valve element displaces to abut against the sealing gasket to achieve sealing; and the insulating valve cover assembly comprises a metal insert and a PE insulating layer wrapping the metal insert, and is used for electrically isolating the valve body from an external pipeline. According to the multi-safety gas ball valve, the defects of an existing gas valve in the aspects of high temperature, overcurrent and insulation protection are overcome, and the multi-safety gas ball valve is compact in structure, sensitive in triggering, reliable in sealing and lasting in insulation performance.

Embodiments of the disclosure provide an electrically programmable fuse (efuse) over crystalline semiconductor material. A structure according to the disclosure includes a plurality of crystalline semiconductor layers. Each crystalline semiconductor layer includes a compound material. A metallic layer is on the plurality of crystalline semiconductor layers. The metallic layer has a lower resistivity than an uppermost layer of the plurality of crystalline semiconductor layers. A pair of gate conductors is on respective portions of the metallic layer. The metallic layer defines an electrically programmable fuse (efuse) link between the gate conductors.

The invention relates to the field of explosion-proof electrical technology, and discloses an intrinsically safe output Ethernet transmission circuit, which comprises an Ethernet physical layer transceiver chip U6, a network transformer U7, an electrostatic protection diode D17, an electrostatic protection diode D18, voltage stabilizing diodes D13-16, capacitors C46-62, resistors R42-45, resistors R59-65, thick film resistors R74-77, fuses F1-4, a safety Y capacitor CY1, an inductor L2, a gas discharge tube TV1, a gas discharge tube TV2 and an RJ45 connector RJ1. The intrinsically safe output Ethernet transmission circuit provided by the invention realizes 3000V voltage isolation, has the characteristics of low cost and easiness in implementation, not only has strong anti-interference and lightning surge protection capabilities and stable transmission performance, but also is easy to calculate and check intrinsically safe parameters through multi-stage isolation and current-limiting and voltage-limiting protection, and has a wide application prospect. And multiple key problems in intrinsic safety Ethernet transmission are effectively solved.

This invention discloses a plug-in board and adapter, associated electrical components, and an electric vehicle. The plug-in board includes an MCU circuit I, an adapter communication circuit, and a controller circuit. Some models also include a BMS battery management circuit, a vehicle electrical and electronic fuse circuit, a taillight control circuit, a communication line starting power supply circuit, a human-machine interaction circuit, and a battery communication circuit. The plug-in board is soldered to the controller's PCB circuit board via pins, or connected to the pins on the controller's PCB board via a socket. The plug-in board and the controller are housed in a single housing, saving space, material costs, and labor costs. The original controller's MCU chip can be improved to enhance controller performance and enable the application of bus control systems without modification, greatly simplifying the wiring harness and connectors throughout the vehicle.