4309 results about "Power cord" patented technology

A multi-phase LLC resonant converter circuit (10) includes: first to third LLC resonant converters each including a series circuit (S1 to S3) of a first switch and a second switch that are connected in parallel to a DC power supply, a high-frequency transformer (T1 to T3) including a primary-side winding and a secondary-side winding, a resonant circuit including a resonant reactor (Lr1 to Lr3) connected between a connection point of the first switch and the second switch and one end of the primary-side winding, a resonant capacitor (Cr1 to Cr3) in which one end is connected to the other end of the primary-side winding, and a divided resonant capacitor (Cn1 to Cn3) in which one end is connected to a connection point of the primary-side winding and the resonant capacitor; a first neutral line (N1) that connects the other end of the resonant capacitor; a neutral line reactor (Ln) connected between the first neutral line and a power supply line of the DC power supply; and a second neutral line (N2) that connects the other end of the divided resonant capacitor.

A waterproof outdoor lamp easy to assemble and an assembling method thereof are provided. The waterproof outdoor lamp easy to assemble includes a power cord, a lamp holder, an inner plug, a light source, two upper rivets, two lower rivets, and a light bulb. The lamp holder includes a cord connecting portion and an inner plug accommodating portion, the cord connecting portion and the inner plug accommodating portion are integrally injection-molded on the power cord. An inner plug limiting protrusion is disposed on an upper end surface of the inner plug, an inner plug limiting groove is defined on the inner threads of the inner plug accommodating portion, the inner plug limiting protrusion is clamped in the inner plug limiting groove. Compared with conventional outdoor lamps, the waterproof outdoor lamp easy to assemble has better waterproof performance and is also simpler in structure.

Provided is a display apparatus including a substrate having an island and a plurality of connection parts extending in different directions from an end of the island and connected to different islands; a display region disposed on the island and including a display element connected to a common electrode; a common voltage power line disposed on the island and on at least one first connection part of the plurality of connection parts extending from the island; and at least one contact portion disposed on the at least one first connection part, wherein the at least contact portion is connected to the common electrode and the common voltage line.

The invention provides a tumor electric field treatment system and an electrode slice temperature detection method, the system comprises an electrode slice and a controller, the electrode slice comprises a plurality of electrode units and a plurality of temperature detection units, the plurality of temperature detection units are divided into a plurality of row groups and a plurality of column groups, the grounding ends of the temperature detection units in each row group are jointly connected to the same grounding wire, and the signal ends of the temperature detection units in each column group are connected to the same dual-purpose signal wire after being in short circuit with the corresponding electrode units; when the dual-purpose signal line is connected to the temperature sampling point, the grounding wires are sequentially conducted, so that temperature detection signals detected by the temperature detection units are sampled based on the temperature sampling point; when the dual-purpose signal line is connected to the alternating power line, alternating electric signals are transmitted to the electrode units. In this way, a plurality of electrode units can be zoned and controlled using fewer conductive traces.

A case body has a first opening that is open along a first direction and through which an inverter device is insertable, a surrounding wall portion disposed along the first direction so as to surround the first opening, and a second opening that is formed in the surrounding wall portion and through which a power cable is insertable. A cover member is fixed to the surrounding wall portion by a plurality of fastening members disposed away from each other along an opening edge of the first opening so as to cover the first opening. A second opening width in a direction orthogonal to the first direction is smaller than an opening width of the second opening in the first direction, and a pair of the fastening members is disposed on both sides across the second opening.

The invention provides an electrode plate and a tumor electric field treatment system, the electrode plate comprises a plurality of electrode units and a plurality of temperature detection units, the plurality of temperature detection units are divided into a plurality of row groups and a plurality of column groups, and the grounding ends of the temperature detection units in each row group are connected to a grounding pin through a control switch. The signal end of each temperature detection unit in each column group is connected to a bidirectional change-over switch through a dual-purpose signal line after being respectively in short circuit with the corresponding electrode unit; when the dual-purpose signal lines are connected to the temperature sampling points, temperature detection signals detected by the corresponding temperature detection units in the corresponding column groups are respectively sampled based on the temperature sampling points by configuring the on-off states of the control switches; when the dual-purpose signal lines are connected to the alternating power lines, alternating electric signals are applied to the electrode units in the corresponding column groups based on the alternating power lines. In this way, a plurality of electrode units can be zoned and controlled using fewer conductive traces.

The invention relates to the technical field of energy storage equipment, and discloses movable energy storage equipment based on a construction site, the movable energy storage equipment comprises a box body and a movable seat, an inclination angle adjusting assembly is arranged between the box body and the movable seat, the posture of the box body is sensed in real time through a gyroscope, a threaded rod is driven to adjust the supporting height, and the diagonal deformation of the box body is controlled to be smaller than or equal to 5 mm; a sliding groove and a connecting rod linkage mechanism are arranged in an installation barrel on the outer wall of the box body, a motor is matched to drive a rotating frame to achieve automatic winding and unwinding of a power line, cables are prevented from being scattered and damaged, a sensor set is arranged in the box body, temperature excursion and vibration interference are eliminated through a dynamic compensation algorithm, and the net weight is calculated and calibrated in real time. And electrolyte leakage or structural damage is judged in combination with leakage current monitoring. The problems that box deformation is out of control, cable management is disordered and hidden danger recognition is lagged under the complex terrain are solved, and the safety and reliability of equipment are improved.

A leakage current detection and interruption (LCDI) device includes a leakage current detection module, including a first and a second leakage current detection line and at least one resistive element and / or at least one semiconductor element, configured to detect a leakage current signal on the first or second current-carrying line and to generate a leakage fault signal in response to detecting the leakage current signal. The first and second leakage current detection lines are electrically insulated from each other, and respectively cover one of the first and second current-carrying lines. The at least one resistive element and / or semiconductor element is coupled in series between the first and second leakage current detection lines to form a current path for detecting an open circuit fault in the leakage current detection module. By detecting the fault in the first and second leakage current detection lines, the reliability of the LCDI device is improved.

The utility model discloses an electro-magnetic levitation in-mold injection molding structure, which belongs to the technical field of in-mold injection molding process, and comprises an injection cavity structure, a molding framework structure, a magnet structure and an external power supply positive and negative pole structure, the molding skeleton structure is movably arranged in the injection cavity structure, an N pole of the magnet structure is arranged on one side of the injection cavity structure, and an S pole of the magnet structure is arranged on the other side of the injection cavity structure; the external power source positive and negative electrode structure is arranged on the adjacent side of the injection cavity structure and electrically connected with the forming framework structure. The injection molding structure in the electro-magnetic levitation mold solves the technical problem that a power line and a memory steel wire are easy to expose when a Bluetooth earphone neck hanging product is subjected to oil pressure molding.

A head-mountable device assembly can include a display, a power unit, a cable electrically connecting the display and the power unit, and a retraction device configured to collect the cable.

The utility model relates to the technical field of wires and cables, in particular to a liquid-cooled high-toughness light charging pile cable, which comprises a protective sleeve layer, and a main insulating wire core, a grounding and auxiliary power wire core group, a signal and control wire core group and a filling part which are arranged in the protective sleeve layer, and is characterized in that the main insulating wire core comprises a first conductor, a liquid-cooled pipe and a first insulating layer; the first conductor wraps the liquid cooling pipe; the signal and control wire core group comprises a wire core sheath, a shielding layer, a plurality of third conductors and a plurality of third insulating layers respectively coating the peripheries of the corresponding third conductors; the third conductor, the third insulating layer and the shielding layer are all arranged in the wire core sheath; the shielding layer wraps the periphery of at least one third insulating layer, and the other third insulating layers are located outside the shielding layer. According to the charging pile cable, the liquid cooling pipe is additionally arranged in the main insulation wire core to serve as a cooling structure, so that too fast conductor temperature rise and transmission efficiency reduction are avoided, and charging duration and energy loss are reduced; and the charging pile cable is light in overall weight, convenient to use and long in service life.

A photoelectric composite flexible high-voltage reel cable, including a polyethylene outer sheath (1), a double-face plastic-coated steel belt (2) connected to an inner side of the polyethylene outer sheath (1), an insulating tape (3) connected to an inner side of the double-face plastic-coated steel belt (2), an anti-crack protective sleeve (4) connected to an inner side of the insulating tape (3), and a power cord body (6), a filler rope (7), a reinforcement (9) and an optical fiber body (8) sequentially distributed on an inner side of the anti-crack protective sleeve (4) from top to bottom, where the power cord body (6), the filler rope (7) and the optical fiber body (8) are distributed on a peripheral side of the reinforcement (9). The photoelectric composite flexible high-voltage reel cable further includes a metal radiating column (11), movable balls (13), a rubber air bag (14), and a conveying pipe (15).

Provided is a display apparatus including a substrate having an island and a plurality of connection parts extending in different directions from an end of the island and connected to different islands; a display region disposed on the island and including a display element connected to a common electrode; a common voltage power line disposed on the island and on at least one first connection part of the plurality of connection parts extending from the island; and at least one contact portion disposed on the at least one first connection part, wherein the at least contact portion is connected to the common electrode and the common voltage line.

A headphone that can replace multiple components without the need for professional tools includes two headphone bodies, which are connected together through headbands. A sheath is provided on the inner side of the headband facing the headphone body, and the end of the sheath is detachably connected to the headband. The bottom of one headphone body is connected with a power cord and a microphone, and the magnetic suction on the back side of the two headphone bodies is equipped with a decorative cover, The opposite side of the two headphone bodies is buttoned and equipped with earmuff.

A degradation determination device determines whether each of a first opening / closing device and a fuse provided on a power path is in a degraded state. The power path has a positive electrode-side power line and a negative electrode-side power line. The first opening / closing device and the fuse are provided on the negative electrode-side power line. The degradation determination device is provided with a first potential detection unit that detects a first potential at one end of the first opening / closing device and a second potential at the opposite end thereof, a second potential detection unit that detects a first potential at one end of the fuse and a second potential at the opposite end thereof, and a control unit that determines whether each of the first opening / closing device and the fuse is in a degraded state, based on a potential difference between the first and second potentials.

The invention provides an electric energy quality treatment method, system and device based on a charging pile and a medium, and belongs to the technical field of charging piles, and the method is realized through the following steps: employing a mutual inductor to collect three-phase voltage / current; a common analog sampling and DSP processing circuit; harmonic / reactive power is identified based on the instantaneous reactive power theory, and a compensation instruction is generated; according to the compensation control instruction, driving an active filtering inverter circuit to inject compensation current into a power grid so as to reduce the total harmonic current content and improve the power factor; and the main controller generates charging state data according to the sampled voltage signal and current signal, and couples the data to an alternating current power line for transmission through the power line carrier communication module. The system guarantees the quality of the power grid, achieves the high efficiency and reliability of the operation of the charging pile, and gives consideration to the safety of the power grid and user experience.

The invention provides lighting system for illuminating a target surface in an agricultural environment for a flock of birds, wherein the lighting system comprises a plurality of lighting devices spaced apart on an elongated axis, wherein each lighting device comprises: a connector for electrically connecting the lighting device to a power line; a housing comprising a light exit window; at least one solid-state light source arranged within the housing, wherein the at least one solid-state light source is configured to emit light source light; wherein each lighting device is configured to shape the light source light into a light beam, and configured to emit the light beam along a main optical axis via the light exit window onto the target surface; wherein adjacent lighting devices of the plurality of lighting devices are spaced apart with a spacing (S); and wherein the light exit windows of the adjacent lighting devices are arranged at a distance (H) from the target surface; wherein each respective light beam of the adjacent lighting devices has an angular light distribution with a Full Width Half Maximum (FWHM); whereinFWHM<F*2*tan-1(S2⁢H);wherein FWHM is said Full Width Half Maximum (FWHM); wherein S is said spacing (S); wherein H is said distance (H); and wherein F is a factor in the range between 0.1 and 1.

The invention relates to a device (1) for contacting an electrical conductor (2), in particular a cable conductor of a power supply cable, comprising at least - a connecting body (3) that defines a receiving space (4) into which the conductor (2) to be contacted can be inserted with its end face (5), and - a contact medium (6) with a plurality of electrically conductive and adjacent contact bodies (7) introduced into the receiving space (4), with which the end face (5) of the conductor (2) can be electrically contacted. According to the invention, it is provided that the electrical conductor (2) can be fixed in the receiving space (4), wherein a contact surface (8) of the receiving space (4) facing the conductor (2) is designed in such a way that electrical contact between the connecting body (3) and the conductor (2) is optimized.

A thermosensitive wire includes a pair of conductive wires each covered with an insulator that softens at a preset temperature, and the pair of conductive wires are configured to come into contact with each other to be short-circuited in response to the insulator softening. A power supply system includes: a second power source configured to supply power to the pair of conductive wires; a short circuit detector configured to detect that the pair of conductive wires are short-circuited; a disconnection detector configured to detect that the pair of conductive wires are disconnected; and a controller configured to perform, for power supply to a power supply wire, abnormality control that differs between in the case where the short circuit detector detects that the pair of conductive wires are short-circuited and in the case where the disconnection detector detects that the pair of conductive wires are disconnected.

The utility model relates to a three-stage vacuum pump set using a water-cooling variable-frequency integrated motor. The dry type vacuum pump comprises a roots vacuum pump, a roots pump support frame, a rack and an air inlet flange, and is characterized by further comprising a two-stage dry type vacuum pump, an upper pump and lower pump connecting flange, an electric control system, an exhaust silencer, a communication line connector and a power line connector, and the two-stage dry type vacuum pump is composed of a high-pressure-difference roots vacuum pump and a dry type screw vacuum pump; the two-stage dry vacuum pump is installed on the rack and located under the roots vacuum pump; an air outlet of the roots vacuum pump is connected with an air inlet of the two-stage dry vacuum pump through the upper and lower pump connecting flange, and the exhaust silencer is connected with an air outlet of the two-stage dry vacuum pump; and a shell of the high-pressure-difference roots vacuum pump and a shell of the dry-type screw vacuum pump in the two-stage dry-type vacuum pump are provided with cooling water jackets. The Roots vacuum pump is reasonable in structural design, small in size and capable of dealing with the large-load working condition, and the overall failure rate of the Roots vacuum pump is reduced.

The utility model discloses a multifunctional emergency lighting lamp, and relates to the technical field of emergency lighting lamps. The device comprises a device box, the back face of the device box is fixedly connected with a cross plate, the surface of the cross plate is connected with a fixing plate in a clamped mode, the two ends of the surface of the fixing plate are each provided with a buckle assembly used for quick disassembly, and one side of the bottom end of the device box is provided with a power line used for being connected with a power source. One end of the power line is provided with a protection assembly used for preventing bending. Through the arrangement of the buckle assembly, when the device needs to be maintained and overhauled, the sliding block can be pushed to drive the push rod and the fixing rod to compress the spring, then the trapezoidal block slides out of the interior of the square groove in the surface of the cross plate, and at the moment, the cross plate can be separated from the fixing plate; and the cross plate is fixed on the wall, and the cross plate is separated from the equipment box, so that the equipment box can be disassembled and assembled, and the maintenance convenience of the equipment box is improved.

This power cable is provided with: a conductor; and an insulating layer that is provided so as to cover the outer periphery of the conductor and that is configured from a resin composition containing polyethylene. The insulating layer contains, among polyethylene, a crosslinked polyethylene that is insoluble in xylene at 120° C, and uncrosslinked polyethylene that can be eluted in xylene at 120° C. The uncrosslinked polyethylene has a number average molecular weight of 5000 to 25000.

The invention discloses a power line tension testing machine, and relates to the field of wire harness testing, the power line tension testing machine comprises two terminals used for connecting two ends of a wire harness, and further comprises a carrying table, an annular rotating table is arranged on the carrying table, a traction mechanism comprises a traction ring and a traction seat, and a force application assembly comprises an annular platform coaxially arranged with the annular rotating table. An annular cam guide groove is formed in the annular platform, a guide wheel is slidably connected into the cam guide groove, and when the annular rotating table rotates, the traction ring applies constant or periodically changing side pulling force to the middle of the wire harness; a cam guide groove of a force application assembly is matched with a guide wheel, so that a first spring is compressed when a sliding base moves in the radial direction, linear control over side tension is achieved, pre-tightening force fine adjustment can be achieved through a nut in threaded connection, the compression force of the first spring can be monitored in real time through a force sensor, and the rotating speed of an annular rotating table is controlled; feedback adjustment of side tension is realized, and test errors caused by mechanism fatigue are avoided.

The utility model discloses an electrical safety monitoring device convenient to disassemble and maintain, and relates to the technical field of electrical safety monitoring, the electrical safety monitoring device comprises an electrical box body, a cabinet door, a mounting plate and an electrical safety monitor main body, the cabinet door is installed at the front part of the electrical box body, the mounting plate is installed inside the electrical box body, and the cabinet door is installed at the rear part of the electrical box body. And an electrical safety monitor main body is mounted at the front part of the mounting plate. According to the electrical safety monitoring device convenient to disassemble and maintain, two sets of threaded knobs are unscrewed firstly, so that when extrusion blocks at the ends of the threaded knobs no longer extrude the surface of the front portion of the electrical safety monitoring instrument body, a bidirectional threaded rod can be reversely rotated, and when the bidirectional threaded rod is reversely rotated, two sets of limiting plates can be driven to perform threaded sliding away from each other; the power lines can be separated through the partition plates, and the power lines can be extruded and fixed through the limiting blocks, so that the multiple groups of power lines can be placed in order, and the situation that the power lines are wound together is not likely to occur.

The utility model provides a short-circuit protection circuit for a Type-C interface, and belongs to the technical field of short-circuit protection circuits. Comprising an interface module, an overvoltage and electromagnetic protection circuit and a switching circuit, the interface module, the overvoltage and electromagnetic protection circuit and the switching circuit are connected in series on the same power line and grounding line, and a common circuit and a standby circuit are arranged in the switching circuit and are both connected with the power line. According to the utility model, through the cooperation of the resettable fuse, the double-pole double-throw relay and other elements, the circuit can be rapidly switched so as to ensure that the interface can continue to work normally without maintenance when a short-circuit fault occurs, and through the synergistic effect of the gas discharge tube, the first transient suppression diode, the second transient suppression diode, the electrolytic capacitor and other elements, the short-circuit fault of the interface can be effectively prevented. The problems of overvoltage and electromagnetic interference during short circuit can be effectively relieved.

The utility model relates to the technical field of power line protection, and discloses a machine room power line protection device, which comprises a cabinet body and a cabinet door arranged on the outer side of the cabinet body, and a limiting mechanism used for limiting wires is arranged in the cabinet body; the supporting frame is longitudinally fixed on the inner wall of the cabinet body, and the inner wall of the supporting frame is connected with a placing plate in a sliding manner; according to the utility model, through the arrangement of the limiting mechanism, the power supply circuit can be conveniently limited, through the arrangement of the supporting frame, the placing plate, the threaded rod, the rotating disc handle, the clamping plate, the partition plate and the limiting rod, the position of the electric appliance element can be conveniently adjusted, and meanwhile, the power supply circuit is conveniently limited; the problems of poor contact and overheating of the power supply circuit, which affects normal operation of equipment, and the problems of expansion and contraction of the electric wire caused by temperature change of the power supply circuit, which affects safe operation of the power supply circuit, are prevented.

A power feeding connector (18) to which a power feeding cable (19) for supplying electric power to an electric motor or a battery (12) is connected and an indicator lamp (25) that lights up when a lower traveling structure (2), an upper revolving structure (3) or a working mechanism (4) is in the middle of operating are arranged in back of an operator's seat (7). An insert port (18A) of the power feeding connector (18) which the power feeding cable (19) is connected or disconnected is located to be oriented to the indicator lamp (25)-side in the left-right direction. Because of this arrangement, the insert port (18A) can be illuminated by light emitted from the indicator lamp (25), allowing an operator of an electric hydraulic excavator (1) and workers around it to recognize that the electric power fed from an external power source (13) is being supplied to the electric hydraulic excavator (1) via the power feeding cable (19) connected to the power feeding connector (18) and that the electric hydraulic excavator (1) is in the middle of operating with this electric power.

A heating assembly is arranged on the outer side of the bottom of an inner shell, an outer shell comprises an outer side shell forming a vacuum layer with the side wall of the inner shell, the outer shell further comprises an outer bottom shell, and the outer bottom shell, the outer side shell and the outer wall of the lower bottom of the inner shell form a containing cavity for containing the heating assembly. The outer shell comprises an outer side shell forming a vacuum layer with the side wall of the inner shell, the side edge heat preservation effect is good, the outer bottom shell, the outer side shell and the outer wall of the lower bottom of the inner shell form a containing cavity for containing a heating assembly, the whole body is independent, reliable and convenient to carry, can be matched with a power line or a power source to be carried, is lighter, and can be electrically connected when the power source is needed. And the inner shell and the outer shell are arranged, so that cleaning and disinfection are facilitated, the containing cavity for containing the heating assembly is formed, good heat preservation can be achieved, and the complete heating effect is achieved.