21results about How to "Avoid fever" patented technology

This utility model relates to the field of medical devices, and more particularly to an MRI-compatible implantable electrode lead and implantable medical device. The implantable electrode lead includes: a conductive core, which may be single-core or multi-core; an insulating layer covering the conductive core; and a shielding layer covering or embedded within the insulating layer. The shielding layer has a mesh structure and is braided from conductive wires with curved sections. This utility model provides a mesh shielding layer made of a biocompatible, electrically conductive material outside the implantable electrode lead. This shielding layer can shield magnetic fields to prevent the internally protected conductive core from overheating, thereby ensuring the safety of the implantable electrode lead during MRI scanning. Furthermore, the shielding layer has a certain degree of elasticity to accommodate the elastic conductor core.

This invention discloses a transformer lead fixing device with deformation self-compensation function, relating to the field of transformer technology. The invention includes a fixing plate fixed to the transformer housing, a lead fixing component, a deformation self-compensation mechanism, and a pin mechanism. The deformation self-compensation mechanism includes a clamping component fixed to the end of the lead and multiple stops disposed on the fixing plate. The clamping component has a multi-segmented bent elastic structure, and the stops have inclined abutment surfaces. The pin mechanism adjustably mounts the lead fixing component to the fixing plate. When the lead fixing component is driven to move closer to the transformer housing, the clamping component and the inclined abutment surfaces of the stops abut against each other, generating elastic deformation and achieving electrical contact between the clamping component and the terminal block. This invention, through the multi-segmented bent elastic structure of the clamping component and the unidirectional displacement adjustment of the pin mechanism, achieves adaptive compensation for deformation caused by thermal expansion and contraction and vibration, ensuring long-term stable electrical contact between the terminal block and the lead, and facilitating subsequent maintenance and adjustment.

The utility model discloses an asymmetric cooperative control three-phase balance motor soft starter, comprising a three-phase AC power supply input end, a power adjusting unit, an output end connected to a three-phase asynchronous motor, and a main controller which are connected in sequence. The power adjusting unit comprises an A-phase control module which is internally provided with a first thyristor at least controlled by a main controller; the B-phase control module is internally provided with a pair of antiparallel second thyristors controlled by the main controller; and the C-phase control module is internally provided with a pair of third thyristors which are controlled by the main controller and are reversely connected in parallel. The main controller cooperatively controls the conduction angles of the first thyristor, the second thyristor pair and the third thyristor pair in the starting process of the motor by outputting a control signal so as to adjust the voltage applied to the motor and improve the balance of the three-phase output voltage. According to the utility model, the three phases are controlled, so that the three-phase balance during starting is effectively improved, and the vibration and noise of the motor are reduced.

This invention discloses an automatic switching system, method, and drive circuit for an uninterruptible power supply (UPS) in the field of power electronics. It includes a power module for providing electrical energy to the system; a relay switch unit for controlling the switching of mains power input; an accelerated turn-off unit for accelerating the turn-off of the relay switch unit; a circuit switching unit for switching a high-current drive circuit to a low-current drive circuit after a predetermined delay; and a control module for outputting a high-level signal to control the circuit switching unit to switch the high-current drive circuit to accelerate the closing of the relay switch unit, and outputting a low-level signal to control the accelerated turn-off unit to accelerate the turn-off of the relay switch unit. This invention employs a delayed switching drive design and an accelerated turn-off unit, which significantly simplifies the power supply hardware design, reduces the power requirements of the auxiliary power module, and significantly shortens the relay turn-off time, ensuring the stability and reliability of the UPS during the switching process.

This utility model discloses an uninterruptible power supply circuit and system for multiple frequency converters sharing a battery pack, belonging to the field of frequency converter power supply technology. The uninterruptible power supply circuit for multiple frequency converters sharing a battery pack includes an AC power supply bus, a battery pack, and multiple frequency converter power supply branches; each branch is equipped with an independent three-phase rectifier bridge, a positive isolation diode, and a negative isolation diode. The three-phase rectifier bridge rectifies the AC power to supply power to the frequency converter; the positive and negative isolation diodes are connected in series between the battery pack and the branch input terminal, utilizing their unidirectional conductivity to achieve nanosecond-level zero-switching between AC power supply and battery pack power supply, without the need for a controller; multiple branches share a single battery pack, and the independent rectifier bridge and double-ended isolation diodes eliminate circulating current paths from the hardware topology. This utility model combines the beneficial effects of zero-switching anti-power fluctuation, cost reduction and efficiency improvement through multiple units sharing a battery pack, and enhanced safety by suppressing circulating current.

The utility model provides a novel light-emitting diode (LED) spotlight, which relates to the technical field of LED spotlights and comprises a lamp cover, a lamp cap installed inside the lamp cover, an LED spotlight installed inside the lamp cap, an installation head arranged at the top of the lamp cover and a dismounting assembly arranged between the lamp cover and the installation head. According to the novel LED spotlight, the LED spotlight and the mounting head can be rapidly disassembled through the disassembling and assembling assembly, the whole mounting head does not need to be disassembled from an indoor roof, when the LED spotlight is overhauled or replaced, operation is convenient and fast in the disassembling and assembling process, the time and labor are saved, bolts in holes in the indoor roof are prevented from being disassembled and assembled back and forth, and the maintenance cost is reduced. According to the LED spotlight, the holes are formed in the lamp cap, sand and stones in the holes are prevented from loosening and falling off, the situation that the holes are enlarged to affect the bolt installation stability is avoided, heat in the lamp cap can be led out through the cooling fins and the heat removal grooves, the led-out heat can be discharged out of the lamp cover through the heat removal grooves, heat is prevented from being gathered in the lamp cap, and the LED spotlight is prevented from heating and scalding; and the service life of the LED spotlight is prolonged.

A lamp includes: a power supply circuit (20) provided on a first substrate (K1) and configured to generate a predetermined voltage based on a power supply voltage (Vbat); a light source (30) that is provided on a second substrate (K2), includes a plurality of light-emitting elements and an adjustment unit configured to adjust a drive current flowing through each of the plurality of light-emitting elements, and uses the predetermined voltage as a power supply; a control unit (40) provided on a third substrate (K3) and configured to control the adjustment unit; a first temperature detection circuit (50) provided on the first substrate (K1) and configured to detect a temperature; and a second temperature detection circuit (60) provided on the second substrate and configured to detect a temperature.

The utility model belongs to the technical field of battery test tools, and discloses a battery test pressing device. The battery test pressing device comprises a base, a support, a pressing mechanism and a probe assembly, the support is arranged on the base, the pressing mechanism comprises a fixing frame, a shaft sleeve assembly and a pressing plate, the fixing frame is arranged on the support in a sliding mode and can stop at a preset position, the shaft sleeve assembly is connected with the fixing frame, and the pressing plate is connected with the lifting end of the shaft sleeve assembly. The probe assembly is arranged on the pressing plate, the shaft sleeve assembly can drive the probe assembly to descend or ascend by a preset distance, when batteries of different specifications are fixed, it is guaranteed that the magnitude of pressing force applied to the batteries is fixed, heating caused by large contact resistance at the position of an electrode is prevented, the battery test pressing device can be made to be lower, and the battery test pressing device is more convenient to use. The space volume is saved, the use in a test box is facilitated, and the use range is expanded.

The utility model discloses a special installation pipe fitting for stainless steel corrugated hose for gas delivery, which is designed based on GB / T26002-2025 standard and used for connecting indoor gas delivery pipeline of commercial and residential users. The pipe fitting is composed of a threaded connecting piece, a long-life sealing gasket, a fastening snap ring and a compression sleeve. Except the sealing gasket, the rest components are made of metal material, which can form low-resistance electrical connection of the gas pipeline and reduce the risk of failure caused by leakage of the burner. The fastening snap ring is connected at three equal points of a circular ring. After installation and fastening, the point connection points are automatically separated, which makes the pipe fitting not be disassembled again. This can prevent users from disassembling the pipe fitting privately and causing safety accidents, and ensure the reliability and safety of the connection of the gas delivery pipeline.

This utility model discloses a large cylindrical lithium battery structure with a hard connection between the current collector and the terminal, relating to the technical field of cylindrical batteries. It includes a casing, inside which a core is connected. A positive current collector and a negative current collector are respectively connected to the upper and lower sides of the core. The positive and negative current collectors have a plurality of heat dissipation and ventilation holes arranged in a circular array. The center of the negative current collector has a flange, which is inserted into the terminal below the top cover assembly. This application divides the current collector into a positive and a negative current collector, and the terminal is directly welded to the flange at the center of the current collector, which is equivalent to the terminal being directly connected to the negative electrode of the core. This reduces the internal resistance of the cell and avoids heat generation, making it suitable for high-rate charge and discharge conditions. Compared with the original soft connection scheme, the "Z" folding process of the current collector can be omitted, significantly reducing the current collector area and greatly lowering the manufacturing cost of the large cylindrical lithium battery.

The application relates to a wheel-side speed reducer planetary gear shaft end face turning device, which comprises a lathe seat, the upper end of the lathe seat is provided with a rotary cover, the upper end of the lathe seat is provided with a longitudinal feed box, and the rotary cover is provided with a synchronous automatic locking mechanism. The feeding movement of the longitudinal feed box is transmitted to a wedge-shaped cover through a driving rack, an incomplete gear, a pull rod and a moving frame, and is converted into synchronous radial clamping of multiple sector clamping blocks through cooperation between the wedge-shaped cover slope and the rollers, so that the pure mechanical follow-up locking function that feeding is locking and then unloading is loosening is realized. In the transmission chain, the tooth length of the incomplete gear corresponds to the clamping stroke, and the toothless groove section corresponds to the stable cutting stroke, so that the clamping action is automatically disconnected after the transmission chain is quickly completed in the initial feeding stage, wear and heat caused by long-time meshing of the gear and the rack are avoided, and the stability of the clamping force is prevented from being reversely affected by slight feeding fluctuation.

This application relates to an electromagnetic induction coil frame, including an inner frame, insulating columns, an insulating support plate, and an insulating plate. The inner frame is a cuboid, connected by multiple columnar structures bolted together. Multiple insulating columns are evenly distributed on the sides of the inner frame, with the insulating columns on both sides corresponding to each other. The insulating support plate includes upper and lower support plates, which are bolted to the front of the inner frame. The combined shape matches the front of the inner frame, with semi-circular openings of equal radius on the long side. The shape of the insulating plate matches the lower support plate. Multiple insulating plates are fixed between corresponding insulating columns in groups of at least two. This electromagnetic induction coil frame avoids closed-loop heating through a channel steel connection design. The insulating columns provide support to prevent heating from magnetic lines of force, resulting in a stable structure. The detachable design facilitates transportation, installation, inspection, and maintenance. The materials are lightweight and cost-effective. The outer protective cover of the insulating plate provides dust and electric shock protection. Overall insulation reduces potential hazards and meets equipment support requirements.

This invention belongs to the field of air conditioning technology and discloses an air conditioner outdoor unit, an air conditioning unit, and an air conditioning control method. The air conditioner outdoor unit includes an outdoor unit casing, a mounting bracket, a heat exchanger, and a fan unit. The outdoor unit casing has an air outlet. The mounting bracket divides the interior of the outdoor unit casing into a first cavity and a second cavity. The heat exchanger is located in the second cavity. The fan unit includes a main fan and at least one auxiliary fan, both mounted on the mounting bracket. The main fan is located in the first cavity between the air outlet and the mounting bracket, and the auxiliary fan is located in the second cavity between the mounting bracket and the heat exchanger. The main fan and the auxiliary fan operate independently, and the diameter of the auxiliary fan is smaller than that of the main fan. This air conditioner outdoor unit enables uniform heat exchange in the heat exchanger, improves the utilization rate of the heat exchanger, and allows for adjustment of the fan assembly under different operating loads, thereby improving the operating capacity and application range of the air conditioner outdoor unit.

The application discloses an experimental device and experimental method for atmospheric corrosion thin liquid film of electrified metal conductor, which comprises a thin liquid film system, a three-electrode system, a constant temperature system and a constant current power supply system; the thin liquid film system provides a corrosion experimental thin liquid film environment for the metal conductor and comprises a container containing an electrolyte solution and a thin liquid film medium wrapping the three-electrode system, the thin liquid film medium extending into the electrolyte solution; the three-electrode system comprises the electrified metal conductor as a working electrode, a reference electrode and a counter electrode; the metal conductor is horizontally fixed through a support, passes through a container of a circulating water device and is connected with the constant temperature system and the constant current power supply system at both ends; the constant temperature system is a circulating water device introduced at both ends of the electrified metal conductor, so that the working electrode realizes a required temperature working condition; and the constant current power supply system supplies power for the metal conductor and provides a required constant current passing through the metal conductor.

The invention discloses a self-adaptive magnetic pole extension type magnetofluid sealing device and a magnetofluid sealing method. The self-adaptive magnetic pole extension type magnetofluid sealing device comprises a magnetic pole, a permanent magnet, a magnetic rotating shaft, magnetofluid and flexible magnetic rubber. The flexible magnetic rubber wraps the periphery of the magnetic rotating shaft and is filled with Ni particles, the Ni particles are directionally adsorbed to the pole teeth of the magnetic pole under the action of a magnetic field to form a flexible extending magnetic pole, the magnetic pole effectively extends to the position near the surface of the rotating shaft, and the magnetic fluid is made to fill a sealing gap under directional constraint to form a dynamic sealing film. And high-pressure-bearing and low-abrasion flexible magnetic confinement sealing is achieved. According to the invention, a permanent magnet-flexible rubber matrix-magnetofluid three-dimensional material system is constructed, and the Ni particles are utilized to form a flexible extension magnetic pole, so that the self-adaptive regulation and control of a sealing gap are realized, the contradiction that the pressure bearing capacity is sharply reduced when the sealing gap is increased in the traditional magnetofluid sealing technology is effectively solved, and the sealing reliability is remarkably improved.

The application relates to the photovoltaic technology field and provides a photovoltaic cell, a laminated cell and a photovoltaic module, which are at least beneficial to improving grid line quality while reducing silver paste consumption. The photovoltaic cell comprises a cell body and a grid line. The grid line comprises a first part and a second part. The first part comprises a first seed part and a transmission layer. A plurality of first seed parts are arranged at intervals along the length direction of the grid line. The first seed part is electrically connected with the cell body. The transmission layer extends along the length direction of the grid line and is located on the first seed part. The second part comprises a second seed part extending along the length direction of the grid line. The second seed part is electrically connected with the cell body. The end of the transmission layer covers the end of the second seed part. In the length direction of the grid line, the width of the first seed part is smaller than the length of the second seed part. The material of the transmission layer is different from the material of the first seed part.

The application discloses a display panel and a display device. The display panel comprises a level conversion circuit, a first scan driving circuit and a plurality of pixel units. The level conversion circuit is electrically connected to the first scan driving circuit for outputting a clock signal. The first scan driving circuit controls the pixel units to receive a data signal for image display according to the clock signal for image display. The display panel further comprises a first control unit, a first transmission channel and a second transmission channel. The level conversion circuit is connected to the first scan driving circuit through the first control unit and the first transmission channel. The level conversion circuit is also connected to the first scan driving circuit through the first control unit and the second transmission channel. The first control unit is used for controlling the clock signal output by the level conversion circuit to be transmitted to the first scan driving circuit through the first transmission channel and the second transmission channel at different times. The clock signal is controlled to be transmitted through the first transmission channel and the second transmission channel at different times, which can effectively reduce the heat generated by the line.

The utility model belongs to compressor technical field, specifically discloses a kind of frequency converter drive circuit, frequency converter and compressor.The high voltage side / low voltage side drive and discharge circuit in frequency converter drive circuit, it is improved as follows on the basis of original circuit structure: first, a capacitor and resistance are newly added in the gate end of MOS tube, and newly added capacitor and resistance are arranged in parallel;Second, the resistance value of voltage division resistor in original high voltage side / low voltage side drive and discharge circuit is reduced, to obtain new voltage division resistor, the resistance value of new voltage division resistor is significantly reduced compared with the resistance value of original voltage division resistor, and the sum of the resistance value of new voltage division resistor and newly added resistance is equal to the resistance value of original voltage division resistor.When MOS tube is turned on, capacitor is equivalent to short circuit, voltage is charged to MOS tube through new voltage division resistor and capacitor first, to accelerate the turn-on speed of MOS tube, reduce the risk of damaging MOS, to ensure the stable and reliable conduction of MOS tube.

This invention discloses a telescopic fitting for sliding support and current diversion of a busbar, belonging to the field of busbar connector technology. It is assembled between a busbar and an equipment terminal and includes a busbar clamp, an equipment clamp, a support rod assembly, a steering block, and telescopic wires. The busbar clamp is fixedly installed at the end of the busbar, and the equipment clamp is fixedly installed at the end of the equipment terminal. The two ends of multiple telescopic wires are respectively fixedly installed on the busbar clamp and the equipment clamp. The outer end of the equipment clamp is rotatably assembled to one end of the steering block. The support rod assembly is movable and assembled inside the busbar. This invention, through the design of separating mechanical support and electrical current diversion, avoids the phenomenon of excessive current in the support rod causing overheating under special environments due to skin effect, electromagnetic interference, and other factors. Simultaneously, all metal parts of the telescopic fitting can be connected to the charged body, avoiding floating potential and preventing floating discharge under high voltage.

A tractor brake assembly relates to the technical field of tractor brakes and comprises a shell and a piston which are both of an annular structure, and the piston is installed in an inner cavity of the shell. A plurality of return devices are mounted between the shell and the piston; a plurality of mounting through holes are formed in the shell in the axial direction of the shell, the return device is coaxially mounted in the mounting through holes and comprises a pull rod, a pressure spring and an elastic cylindrical pin, the elastic cylindrical pin is arranged in the mounting through hole and is in interference fit with the mounting through hole, and the outer end of the pull rod penetrates through the elastic cylindrical pin and then is detachably connected with the piston; the compression spring is arranged on the periphery of the pull rod in a sleeving mode and elastically connected between the elastic cylindrical pin and the inner end of the pull rod in an abutting mode. The piston can automatically return, the piston return capacity is improved, normal use of a tractor brake assembly is guaranteed, and potential safety hazards of driving are reduced.