48results about How to "High energy ratio" patented technology

A waveguide has a core through which laser light can propagate in a TM mode, that has a rectangular cross section perpendicular to a propagative direction of the laser light, and through which the laser light can propagate in a fundamental mode in which only one portion exists on the cross section of the core where a light intensity of the laser light becomes maximal, and a higher order mode in which two or more portions exist where the light intensity becomes maximal, a clad surrounding the core, and a light absorbing element in the clad, and wherein a distance between the light absorbing element and the core is shorter than a penetration length of evanescent light in the higher order mode, but is longer than a penetration length of evanescent light in the fundamental mode.

A waveguide has a core through which laser light can propagate in a TM mode, that has a rectangular cross section perpendicular to a propagative direction of the laser light, and through which the laser light can propagate in a fundamental mode in which only one portion exists on the cross section of the core where a light intensity of the laser light becomes maximal, and a higher order mode in which two or more portions exist where the light intensity becomes maximal, a clad surrounding the core, and a light absorbing element in the clad, and wherein a distance between the light absorbing element and the core is shorter than a penetration length of evanescent light in the higher order mode, but is longer than a penetration length of evanescent light in the fundamental mode.

A high-power electromagnetic pulse transmitting device for use in a downhole, the device including a ground instrument and a downhole instrument. The ground instrument, with an industrial control computer as the core, includes a depth / magnetic mark / GPS signal recording module, a Manchester coding and decoding module, and a cable drive module, wherein the depth / magnetic mark recording and the Manchester coding and decoding modules communicate respectively through two serial ports with the industrial control computer, and the cable drive module communication for the downhole instrument through four cables by means of phantom power supply. The downhole instrument includes, in turn, from front to rear: an AC voltage boosting module, a rectifier, an energy storage capacitor, a transmitting coil, and a data acquisition module, and further includes a high-voltage discharge switch and a computer-manipulated controller. Power supply of the downhole instrument is provided by the ground instrument through cables.

A high-efficiency direct-fired thermoelectric semiconductor power generator comprises a heat collector, a radiator and a thermoelectric module. The heat collector with a collector cover (4) and fins (12) is used for collecting heat, the radiator (8) with fins and a fan (7) is used for radiating heat, the thermoelectric module (9) is mounted above the heat collector (10), graphite paper is stuck on both a cold face and a hot face of the thermoelectric module (9), the hot face of the thermoelectric module (9) is attached to the heat collector (10) through the graphite paper, the cold face of the thermoelectric module (9) is attached to the radiator (8) through the graphite paper, the fan (7) is mounted outside the radiator (8), and the thermoelectric module (9) is connected with a socket (6) through a lead to deliver electric energy to the outside. The high-efficiency direct-fired thermoelectric semiconductor power generator is stable in provided voltage, simple in structure, long in service life, small in size and convenient to carry and economically affordable, and applied to places without power supply and being badly in need of electric power, such as outdoors, remote areas and emergency situations where electricity can be directly generated only by requiring fire sources for supplying heat.

The invention discloses a cylindrical-structure lithium ion battery and a preparation method thereof. The cylindrical-structure lithium ion battery comprises a cylindrical cell externally coated with a packaging film; a positive tab and a negative tab of the cell penetrate through the packaging film; the positive tab and the negative tab are arranged on the side wall of the cell and parallel with the axis of the cell and has the same orientation with the cell axis. Adoption of the cylindrical-structure lithium ion battery and the preparation method thereof abandons steel shell structure batteries with high cost, heavy weight and poor safety and soft-packaged batteries with a low energy ratio; the cylindrical-structure lithium ion battery and the preparation method thereof have the advantages of higher safety and energy ratio and longer service life.

The invention discloses a round thermoelectric generator of an automobile exhaust semiconductor. The thermoelectric generator consists of a thermoelectric module (3), a heat collector with bumped outer edges (4), a radiator (8), graphite paper (2) and a voltage stabilizing transformer (5). The inner hole sleeve of the heat collector with bumped outer edges (4) is locked on the outer wall of a round exhaust discharge pipeline (1); the two sides of the bumped part of the heat collector with bumped outer edges (4) are respectively fixed with a thermoelectric module (3); the cold surface and the hot surface of the thermoelectric module (3) are both labeled with graphite paper (2); the hot surface of the thermoelectric module (3) is glued with the bumped part of the heat collector (4) through the graphite paper (2), and the cold surface of the thermoelectric module (3) is glued with the radiator (8) through the graphite paper (2); the thermoelectric module (3) is connected with an automobile power supply system through the voltage stabilizing transformer. The temperature resistant of the power semiconductor generating device can reach 400 DEG C, besides, the round thermoelectric generator has the characteristics of stable voltage, high power, maintenance free, long service life, simple structure and convenient use and is suitable for the utilization of the automobile exhaust residual-heat.

A quasi-self focusing high strength large power ultrasonic transducer including a backing and a plurality of piezo-electric crystal sheets is disclosed. The backing has a double layer structure with an air cavity between the layers. At least four piezoelectric crystal sheets of the plurality of piezo-electric crystal sheets are adhered on an inside focusing face of the backing with a protective layer covering the surface of the sheets.

Provided are an apparatus and method for reducing digital noise. The digital noise reducing apparatus includes: a clarified signal generator configured to generate a clarity improvement pattern for increasing an energy ratio of an early reflection region with respect to all reverberations for a received audio source signal, to convolve the clarity improvement pattern with the audio source signal, and to output an audio source signal convolved the audio source signal with the clarity improvement pattern; an early reflection generator configured to output an early reflection signal convolved the audio source signal with an early reflection pattern; a late reverberation generator configured to receive the audio source signal, and to generate a late reverberation signal for attenuating digital noise of the audio source signal; and a noise attenuator configured to generate an audio signal added the early reflection signal and the late reverberation signal to the audio source signal.

A novel structure for connecting a foil electrode tab winding type battery pole set and a cover plate is disclosed. The structure includes a positive electrode pressing plate, a negative electrode pressing plate, a positive electrode rubber mat, a negative electrode rubber mat, the cover plate, a positive electrode rivet, a negative electrode rivet, a positive electrode sealing mat, a negative electrode sealing mat, a positive electrode connecting claw, a negative electrode connecting claw, connecting pieces, and the pole set. The positive electrode rivet passes through the positive electrode sealing mat, the positive electrode connecting claw, the cover plate, the positive electrode rubber mat and the positive electrode pressing plate in order and then is riveted. The negative electrode rivet passes through the negative electrode sealing mat, the negative electrode connecting claw, the cover plate, the negative electrode rubber mat and the negative electrode pressing plate in order and then is riveted. The connecting pieces are connected to the pole set through ultrasonic welding, and then the connecting pieces of positive and negative electrodes are connected to the positive electrode connecting claw and the negative electrode connecting claw respectively through ultrasonic welding or laser welding. Beneficial effects of the novel structure include 1) a high battery energy ratio, 2) a low price and 3) high process implementability.

The invention discloses a power exchange module and an electric vehicle comprising the same. The power exchange module comprises a quick-change bracket and a battery pack; The battery pack is installed on the quick-change bracket; The manufacturing method of the quick-change bracket is as follows: the aluminum profile is made into a workpiece through an extrusion process; Heat treatment of the extruded workpiece; Machining the workpiece after heat treatment; Tailoring and welding the machined workpieces together; Surface treatment of the tailor-welded workpiece to obtain a quick replacement bracket; The manufacturing method of the frame of the battery pack is as follows: the aluminum profile is made into a workpiece through an extrusion process; Heat treatment of the extruded workpiece; Machining the workpiece after heat treatment; Tailoring and welding the machined workpieces together; Surface treatment of tailor-welded workpiece. The tailor-welded parts are joined together to obtaina frame. The power exchange module adopts aluminum extrusion process, which not only greatly reduces the processing cost, but also improves the energy ratio of the battery pack.

An apparatus for manufacturing a secondary battery includes a first guide in which one side of one end is recessed to define a concave space, wherein, when a battery case of the secondary battery is folded, the one end is configured to be inserted into the battery case to push a folding part of the battery case to an outside; and a second guide configured to hold a sealing part of the battery case so as to fix the battery case.

An apparatus for manufacturing a secondary battery includes: a recess induction part configured to allow a folding part folded in a battery case of a secondary battery to be recessed inward so as to provide a recess part when the battery case of the secondary battery is folded; a first guide, of which one side of one end is recessed to define a concave space, wherein, when the battery case of the secondary battery is folded, the one end is configured to be inserted into the battery case to push the folding part to an outside so that the recess induction part is configured to be inserted into the concave space; and a second guide configured to hold a sealing part of the battery case so as to fix the battery case.

The invention relates to a battery using bromine-containing ionic liquid as a positive electrode active material and an assembly method thereof. The battery includes a positive electrode chamber and a negative electrode chamber separated by a cation exchange membrane; the electrolyte in the positive electrode chamber contains bromine-containing an ionic liquid, and the negative electrode chamber is injected with an ionic liquid electrolyte. The bromine-containing ionic liquid in the present invention is obtained by reacting bromine simple substance with an organic salt. The present invention adopts ionic liquid as electrolyte, uses bromine-containing ionic liquid as positive electrode active material, and uses aluminum or magnesium as negative electrode. Aluminum and magnesium electrodes do not have passivation film in ionic liquid, so they have high reversibility; The invention is a cheap, environmentally friendly, high energy ratio battery system.