512 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 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 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.

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.

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.

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.

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.

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.

A detonator for a perforating gun. The detonator is used to ignite a detonator cord in a charge tube for a perforating gun assembly, which in turn is used for perforating a wellbore. The detonator includes a cartridge. The cartridge comprises a tubular body having a first end; and a second end. Preferably, the tubular body is fabricated from a metallic material. The detonator also comprises a post proximate the first end of the tubular body. The post is configured to be in electrical communication with a first leg wire connected to an addressable switch. Alternatively, the post is in contact with the end of a detonation pin. The detonator also has a fuse head within the bore of the tubular body, and a fuse wire. The fuse head is in contact with the explosive charge material. The detonator is releasably snapped into a compartment located within the charge tube.

The utility model discloses a power supply protection device for an electric vehicle. The power supply protection device comprises a shell, a protection part and a contactor, the shell comprises a bottom plate and an upper cover, and the upper cover and the bottom plate are closed to form a cavity for accommodating the protection part and the contactor; the protection part comprises a fuse, a base and a connecting block; two ends of the fuse are fixed on the bottom plate through the base; the connecting block comprises a first connecting sheet and a second connecting sheet; the input ends of the multiple bases are connected through a first connecting piece, and the output end of one base is connected with the input end of the contactor through a second connecting piece. By arranging the protection part and the contactor, the fuse and the contactor can be arranged on the power supply circuit of the electric vehicle, the connection between the power supply and the motor controller is automatically disconnected when the vehicle does not run, the self-discharge condition is reduced, and the service life of a battery of the electric vehicle is prolonged; when the vehicle has an electrical fault, the main power supply can be cut off in time, and the safety of the vehicle is improved.

A multi-bit, asynchronous e-fuse macro, the macro comprising: an input output enable, a power on reset, a write address, an input write enable, a ground clamp enable, and a write clock; a plurality of e-fuse bits; a supply voltage configured to allow programming at least one of the e-fuse bits; at least one fuse output; and self-timing and control circuitry configured to perform signaling, wherein each of the inputs is in electrical communication with the e-fuse macro.

The utility model relates to the technical field of circuit protection, and discloses a three-terminal circuit protection unit, which is characterized by comprising a support body, the support body is provided with a plastic package layer, an inflow terminal, an outflow terminal and a control terminal, and the inflow terminal, the outflow terminal and the control terminal are arranged at the lower part of the support body. The plastic packaging layer is filled between every two adjacent ends of the inflow end, the outflow end and the control end and at the upper part of the inflow end, the outflow end and the control end; a heating body and a first insulating layer are arranged at the upper part of the supporting body, and the first insulating layer is arranged at the upper part of the heating body; a safety circuit is arranged on the first insulating layer and is electrically connected with the inflow end, the outflow end and the control end respectively; in an overcurrent state, the safety circuit is fused; in an overvoltage state, the heating body is electrically connected with the inflow end and the control end to form a control circuit, the heating body emits heat, and heat penetrates through the first insulating layer to fuse the safety circuit; the problems that a three-terminal fuse is large in thickness and high in manufacturing cost are solved.

The utility model relates to the field of electrical connection equipment, in particular to a waterproof junction box with a fuse. The junction box comprises a box body and a box cover with the top hinged with a movable surface cover, which form a sealed main body. A wiring component is fixed in the box body, and a fuse bin is arranged at the top of the box body and used for installing fuses connected with a circuit in series. Two sides of the box body are provided with wire outlet holes, each hole is in threaded connection with a wire outlet pipe joint, and a first wire through hole and a fixing pipe with a through groove are arranged in the joint. A wire penetrates through the first wire through hole, then winds the outer wall of the fixing pipe and is pressed and fixed through the elastic piece in the locking screw, and the other end of the wire is led out of the second wire through hole of the locking screw. A waterproof rubber ring is arranged between the box body and the box cover, a socket waterproof ring is arranged at the top of the box cover and is matched and sealed with the movable surface cover, and rubber blocks are additionally arranged on the inner wall of the box cover and the movable surface cover to reinforce sealing of clamping positions. According to the structure, moisture permeation is blocked through multiple sealing, the pulling resistance of the wire rod is enhanced in a winding and pressing mode, the fuse bin provides overload fusing protection, and the movable surface cover facilitates rapid maintenance.

The present invention provides an electric circuit breaker device capable of suppressing an increase in power of a power source and easily cutting off an electric circuit while it is possible to cope with an increase in the number of parts to be cut (fuse elements). An electric circuit breaker device includes an accommodation portion, external connection terminals at both sides, a fuse element accommodated in the accommodation portion, and an arc-extinguishing material, wherein the electric circuit breaker device includes a power mechanism configured to apply a tensile force to an end portion of the fuse element to divide the fuse element, and an electrical connection maintaining structure maintaining an electrical connection between the fuse element and the external connection terminal until the fuse element is divided.

The utility model discloses a primary protection low residual voltage lightning protection module, and relates to the technical field of circuit protection. The gas discharge circuit comprises a first temperature fuse F1, a second temperature fuse F2 and a gas discharge tube GDT1, a second piezoresistor MOV2 is connected between the first temperature fuse F1 and the gas discharge tube GDT1, and a third piezoresistor MOV3 is connected between the second temperature fuse F2 and the gas discharge tube GDT1. A first voltage dependent resistor MOV1 and a semiconductor discharge tube TSS1 are sequentially connected between the first temperature fuse F1 and the second voltage dependent resistor MOV2 and between the second temperature fuse F2 and the third voltage dependent resistor MOV3. According to the utility model, the temperature fuse can be disconnected under the condition that the surface temperature rises when the piezoresistor MOV1 or the semiconductor discharge tube TSS1 fails, so that the lightning protection function is realized, the lightning protection effect is good, and electric equipment can be better protected.

An anti-fuse circuit includes a current generator and an anti-fuse sensing unit. The current generator has at least one replica electronic element. The anti-fuse sensing unit is electrically connected to the current generator, and the anti-fuse sensing unit has at least one electronic element. The electronic element specification of the at least one electronic element of the anti-fuse sensing unit is the same as the electronic element specification of the at least one replica electronic element of the current generator. The current generator supplies current to the anti-fuse sensing unit to sense the anti-fuse. By means of the technical solution of the present application, the anti-fuse circuit can improve the accuracy of sensing the anti-fuse.