14results about How to "Increase the resistance value" patented technology

The invention relates to the technical field of secondary batteries, in particular to a conductive composite current collector, a preparation method thereof and a battery. The conductive composite current collector comprises a supporting layer, a metal layer arranged on at least one surface of the supporting layer and a PTC (Positive Temperature Coefficient) bottom coating arranged on the surface, far away from the supporting layer, of the metal layer, the supporting layer comprises a polymer base membrane and conductive fibers dispersed in the polymer base membrane; the PTC undercoat layer includes a conductive polymer and a conductive agent dispersed in the conductive polymer. The conductive composite current collector provided by the invention is high in conductivity and excellent in safety, the probability of thermal runaway of the battery at a high temperature is effectively reduced, and the rate capability and the cycle performance of the battery are improved.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a high-temperature-resistant high-impedance pressure-sensitive adhesive, a supporting film and a preparation method of the supporting film. A styrene-butadiene-styrene block copolymer (SBS) is used as a main body material, an acrylic copolymer with high carboxyl content is grafted in a solvent in a thermal initiation mode, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained after the high-temperature-resistant and high-impedance pressure-sensitive adhesive is compounded with tackifying resin, a curing agent and an antioxidant, and after optical-grade PET is coated with the high-temperature-resistant and high-impedance pressure-sensitive adhesive, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained. According to the novel supporting film, the polarity of the SBS main body material is low, the excellent electrical insulation performance is provided, the supporting film body has the characteristic of high impedance, and therefore the requirement for high impedance of the supporting film in a copper bar friction experiment is met; in addition, after the acrylic copolymer with high carboxyl content is grafted, a large number of crosslinking points can be provided, and the overall crosslinking degree is greatly increased after thermocuring, so that the high-temperature modulus of the adhesive layer is improved, and the adhesive layer is endowed with the characteristic of high-temperature deformation resistance.

The invention relates to a hybrid voltage limiter. According to the invention, the hybrid voltage limiter (1) comprises a first electrode (14), a second electrode (15), flip-flop electronics (10), a thyristor component and a varistor component, the varistor component comprising a varistor (9) and being connected in parallel with the thyristor component, where the thyristor component is electrically connected to the first electrode (14), the thyristor component forming two thyristors (5) connected antiparallel, the gate of an anti-parallel connected thyristor (5) is connected to the flip-flop electronics (10) in such a way as to be able to receive a trigger signal of the flip-flop electronics (10), where the flip-flop electronics (10) are electrically connected to a first electrode (14) and a second electrode (15), where the thyristor component is electrically connected to the second electrode (15) via a first resistivity. The thyristor component is electrically connected to the second electrode (15) by a bypass (6) having a second electrical resistivity, the first electrical resistivity having a higher resistance value than the second electrical resistivity, and the bypass (6) is connected to the second electrode (15) in a spark gap-avoiding manner, and the varistor component is electrically connected to the first electrode (14) and the second electrode (15).

The invention discloses a mouth opening function rehabilitation training device, and relates to the field of mouth openers, the mouth opening function rehabilitation training device comprises a foldable mouth opening assembly, a base, a limiting assembly, a resistance adjusting assembly and the like, and the two ends, away from the folded end, of the mouth opening assembly are sequentially hinged to a supporting rod, a connecting rod and a grab handle. A plurality of vertical hanging lugs are symmetrically arranged on the base, and the supporting rods and the grab handles are hinged to the corresponding vertical hanging lugs. The limiting assembly is arranged in the included angle of the grab handle, is perpendicular to the rotating plane of the grab handle and is connected to the base in a sliding mode, and a body of the limiting assembly is of a conical structure. The resistance adjusting assembly comprises an adjusting rod, a sleeve and a spring, one end of the adjusting rod is rotationally connected to the base, the other end of the adjusting rod is in threaded connection with the sleeve, and the sleeve is connected to the hinged position of the connecting rod and the supporting rod through the spring. The resistance is increased in a stepless mode, so that the patient can slowly adapt to the size of the occlusion resistance, the maximum limit value is set to be adjustable, and the situation that the patient or family members cannot grasp the maximum value of the mouth opening angle during auxiliary training is prevented.

The present invention belongs to the field of protein technology, and relates to an active peptide for enhancing intestinal barrier function, a preparation method and an application thereof, wherein the amino acid sequence of the peptide is LIPR. The active peptide enhances the intestinal barrier function by promoting the expression of claudin, occludin and ZO-1 protein, thereby reducing toxin invasion and maintaining intestinal health. The present invention also provides a preparation method and an application of the active peptide for enhancing intestinal barrier function.

The invention relates to meteorological instruments and microelectronic technologies, in particular to a platinum resistor chip for high-altitude temperature observation and an FIB punching process, the platinum resistor chip comprises a rectangular base and a platinum resistance wire, and the rectangular base is of a horizontal frame structure; the platinum resistance wire is installed on the rectangular base, and continuous holes are formed in the part, located on the hollowed-out area, of the platinum resistance wire in the length direction of the platinum resistance wire; the holes in the platinum resistance wire in the hollow area are divided into a middle area and auxiliary areas at the two ends of the middle area; the hole spacing of the middle area is smaller than that of the auxiliary area; and two ends of the platinum resistance wire are leads. The mass of the platinum resistance wire is reduced, the ventilation quantity is increased, so that the platinum resistance wire cannot be damaged due to excessive wind power, meanwhile, the cross sectional area of current is reduced, the resistance value of the platinum resistor is increased, and the temperature influence caused by different materials between the platinum resistor and a bonding pad or a wire except for solar radiation is greatly reduced; therefore, the measurement of the high-altitude environment temperature is more accurate, and the response rate is higher.

A kind of TMR sensor assembly for detecting urea tank liquid level, including PCB substrate and TMR magnetic control IC arranged on PCB substrate, patch resistance, one end of PCB substrate is provided with blank and narrower connecting end, and connecting end is electrically connected with corresponding connector crimping terminal in connector plastic shell by multiple connecting wires.The utility model has the advantages of smaller size, smaller gear interval can be set, higher resolution compared with traditional dry reed sensor, its life is much longer than the switch life of dry reed, and reliability is greatly improved.

This application discloses a system and method for measuring the depth of concrete surface during the construction of a seepage-proof wall, relating to the field of seepage-proof wall construction technology. The system includes a signal feedback line, a main connecting wire, and a calibration resistance line. The first end of the signal feedback line is electrically connected to the measuring contact of the display structure; the first end of the main connecting wire is electrically connected to the positive terminal of the display structure; and the first end of the calibration resistance line is electrically connected to the calibration contact of the display structure. The second ends of the signal feedback line, the main connecting wire, and the calibration resistance line are electrically connected, and all three are connected to a counterweight structure. The signal feedback line has multiple equally spaced depth sensing resistors. The display structure is used to display the depth of the concrete surface in the pouring trench in real time. The number of burst resistors is equal to the number of depth sensing resistors, and the burst resistors and depth sensing resistors are connected in parallel. The burst resistors have a breakable outer shell. This application measures the concrete surface depth by measuring resistance changes, achieving high accuracy, high construction efficiency, and cost savings.

The invention discloses a piezoelectric film pressure sensor suitable for different temperatures, which comprises an upper thermal insulation layer, an upper heating layer, a piezoelectric material film layer, a lower heating layer and a lower thermal insulation layer which are sequentially stacked from top to bottom, and is characterized in that the piezoelectric material film layer is packaged between the upper heating layer and the lower heating layer and leads out piezoelectric signals through a signal line; the upper heat preservation layer and the lower heat preservation layer are each composed of a hard supporting framework and a flexible heat insulation filling material, the hard supporting frameworks are hollowed-out grid supporting frames, the thickness of the hard supporting frameworks is equal to the thickness of the upper heat preservation layer and the thickness of the lower heat preservation layer, and grids of the hard supporting frameworks are filled with the flexible heat insulation filling materials. By arranging the thermal insulation layer, the problem that the piezoelectric film pressure sensor is influenced by external temperature is solved, and the accuracy of piezoelectric data acquisition is improved while the sensitivity of the piezoelectric film pressure sensor is ensured.

The invention discloses a large-current high-frequency high-speed transmission Type-C connector, which comprises an insulating body, a shielding shell, a grounding terminal, a power supply terminal, a signal terminal and a clamping hook piece, the grounding terminal, the power supply terminal and the signal terminal are respectively inserted into the corresponding terminal grooves from back to front; a high-frequency terminal group for high-frequency high-speed transmission is arranged on the insulating body, the high-frequency terminal group comprises a plurality of high-frequency terminal modules, each high-frequency terminal module comprises a high-frequency terminal and an insulating part, the high-frequency terminals and the insulating parts are molded to form the high-frequency terminal modules, and the high-frequency terminal modules are inserted into the corresponding terminal grooves from back to front; the widths of all parts of the signal terminal are the same, and the width of the high-frequency terminal is greater than that of the signal terminal; therefore, the high-frequency and high-speed passing performance of the high-frequency terminal is better, the modular design and the plug-in mounting design of the high-frequency terminal are realized, so that the high-frequency terminal integrates molding forming and plug-in mounting, the assembling process of the high-frequency terminal is simplified, the high-frequency terminal is simple and convenient to assemble, and the high-frequency terminal is more beneficial to forming and manufacturing.

The present invention provides a saturated reactor suitable for a direct current transmission system, the reactor comprising an iron core, a coil and a water cooling system; the coil is connected in parallel with a variable resistor whose resistance is inversely proportional to the current passing through it, and the reactor body composed of the coil and the iron core is provided with a water cooling system. The present invention connects a resistor with a variable resistance in parallel to the iron core coil of a traditional reactor; and its resistance is inversely proportional to the current passing through it; when the thyristor connected in series with the reactor is turned on, since the current passing through the variable resistor is relatively small, its resistance is relatively large, which can provide sufficient damping to limit the excessive growth of the thyristor gate current; and after the thyristor is fully turned on, the current passing through the variable resistor increases, so its resistance decreases, the corresponding damping decreases rapidly, and the heat generated by it decreases; the on-state energy loss is reduced, and the heat dissipation of the reactor is improved.

The tumor organ chip comprises a chip body, structural units are arranged on the chip body in an array mode, and each structural unit is provided with a microsensor; each structural unit comprises a culture pond, and a cancer cell culture solution is added into the culture pond; each micro sensor comprises two micro beams which are assembled in the culture pond; the cancer cells move to drive the micro-beam to deform, so that the micro-sensor generates resistance change, and the resistance change is measured by using external monitoring equipment to realize real-time monitoring of the cancer cell activity; the structural unit comprises a culture pond for culturing cancer cells and a groove for mounting the microsensor; the micro-beam is of a three-layer core cladding structure, the inner layer selects elastic fibers as a substrate, the middle layer selects a flexible piezoresistive material as a conductive coating, and the outermost layer selects an elastic insulating material for packaging; mounting electrodes at two ends of the conductive coating; according to the invention, in-situ real-time monitoring of the contraction activity of cancer cells can be realized.

The utility model discloses a kind of FPC resistance structure and resistance structure applied to notebook keyboard MiniLED backlight, including resistance main line, the resistance main line is equipped with first main line part and second main line part, first gap is equipped between the first main line part and second main line part, the first gap is used to supply resistance insertion, insert resistance, can realize the resistance value of resistance increasing resistance structure, so that resistance adjustment is more convenient and efficient.

The application discloses a resistance adjusting jig for adjusting resistance value of a bent resistor. The resistance adjusting jig comprises a base, a positioning table upwardly protruding on the base, a probe assembly, two groups of test pins of the probe assembly being arranged at two ends of the positioning table in the transverse direction and used for contacting a pin area of the bent resistor, and a pressing mechanism, a driving assembly of the pressing mechanism being capable of driving a pressing block to move in the up-down direction above the positioning table, and a material hardness of at least a lower end portion of the pressing block being greater than that of a flat plate portion of the bent resistor. In the resistance adjusting process, the flat plate portion is clamped between the pressing block and the positioning table, and locally plastically deformed under the pressure in the up-down direction, and according to the strain gauge effect, the deformation makes the effective conductive length of the flat plate portion slightly increase and the cross-sectional area slightly decrease, so that the resistance value is increased. The resistance adjusting is realized by the pure physical mechanical compression mode, the material discontinuity problem caused by the existing cutting or corrosion process is avoided, and the stability and reliability of the resistor after the resistance adjusting are effectively improved.