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44results about How to "Realize series connection" patented technology

RFID antennae polling switching device

InactiveCN101236597ARealize series connectionIncrease the number of external antennasSensing record carriersEffective powerTime-sharing
The invention provides an RFID antenna polling switch device which ensures that a plurality of antennas simultaneously connect to a radio-frequency port of a reader-writer and realize the automatic polling of an antenna array in order to realize time-sharing drive of each antenna to read electronic tags in a coverage area. The invention realizes that one antenna polling switch device or a plurality of antenna polling switch devices are connected in series between the reader-writer and the antennas which are separate from each other; a periodic pulse signal is generated through a timing circuit of the device; a periodic communication and disconnection of at least one mechanical switch are driven so that the radio-frequency port of the reader-writer and a plurality of reader-writer antenna can be communicated in a cycle and time-sharing operation is carried out by each antenna; the invention can solve the problem of collision produced in controlling a processing module and can ensure that the effective power of the antenna is not reduced, thereby achieving a larger reading range and a better reading effect. The RFID antenna polling switch device has simple structure, reliable performance and low cost and can be applicable for the management of warehouses, libraries, etc, in particular for making a periodic inventory of goods or books in different positions of a goods shelf or a bookshelf.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Thin-film solar cell of polymer with laminated structure

The invention discloses a laminated polymer solar cell, which comprises a base plate, an anode layer, an anode modification layer, a first active layer, a cathode modification layer, a cathode layer and an intermediate electrode consisting of an electronic transport layer, a metal layer and a hole transport layer, wherein the intermediate electrode consists of an n-type metallic oxide electron transport layer and a p-type metallic oxide hole transport layer which are high in light transmittance. A thin layer of metal is inserted between the two metallic oxides and the effective combination of electrons and holes. The active layers of up and down two sub-cells of the laminated polymer solar cell are mixtures of identical or different conjugated polymers. The open circuit voltage of the laminated solar cell is the sum of the open circuit voltages of the up and down two sub-cells, so the serial connection of polymer photovoltaic cells is realized. The combined intermediated electrode structure can be wildly used in laminated devices with active layers made of conjugated polymers of different light absorption ranges, so as to well match the light absorption of the whole cell with the solar spectrum and improve the energy conversion rate.
Owner:CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES

Series-stiffness, broadband and magnetorheological intelligent vibration absorbing device

InactiveCN105909721AWide overall stiffness adjustment rangeReduce energy input consumptionSpringsNon-rotating vibration suppressionBroadbandNegative stiffness
The invention discloses a series-stiffness, broadband and magnetorheological intelligent vibration absorbing device. The device comprises a bottom self-lubricating magnetic guide rail plate, a bottom magnetic yoke outer annular column, arc section circular ring sleeve keys, a bottom magnetic yoke anisotropic bar, disc-shaped springs, bottom inner column magnet exciting coils, bottom outer column magnet exciting coils, a bottom working clearance, a soft magnetic metal sealing plate, overlapped magnetorheological elastomers (MREs), overlapped magnetic conductive steel plates, an I-shaped iron connecting plate, bearing frame columns, an II-shaped iron connecting plate, a mass array, upper inner column magnet exciting coils, upper outer column magnet exciting coils and an upper working clearance; a negative stiffness system and a positive stiffness system form a basic power outputting unit of the series-stiffness, broadband and magnetorheological intelligent vibration absorbing device. With the adoption of the series-stiffness, broadband and magnetorheological intelligent vibration absorbing device, the shortages of narrow controllable broadband of a traditional passive vibration absorber, unadjustable performance, and complex active vibration absorbing assisting system. Compared with an existing intelligent vibration absorbing device, the series-stiffness, broadband and magnetorheological intelligent vibration absorbing device can reduce the low-frequency interference of flexible demands and high frequency vibration of rigid demand, applies a plurality of working conditions, and has a good economic advantage.
Owner:HOHAI UNIV

Lithium battery cell, lithium battery and preparation method thereof

The invention relates to the field of a lithium battery, specifically a lithium battery cell, a lithium battery and a preparation method thereof. A current collector comprises a front positive surfaceand a negative electrode surface which are arranged oppositely, wherein a lithium oxide-containing columnar crystal positive electrode layer is formed on the positive electrode surface to be used asthe positive electrode structure of the lithium battery cell; a lithium silicon carbon composite negative electrode layer is formed on the negative electrode layer; by taking the lithium oxide-containing columnar crystal with high voltage and high capacity characteristics as the positive electrode material, the high capacity density lithium battery cell and lithium battery can be obtained; by setting positive and negative electrodes of two different lithium battery cell units on the two surfaces of the current collector, the current collectors with shared positive and negative electrodes are formed, so that stacking preparation of multiple lithium battery cell units can be realized, thereby realizing preparation of the high capacity lithium battery; and the current collector also can be directly used as an external electrode of the lithium battery, so that the packaging structure of the lithium battery can be simplified.
Owner:成都大超科技有限公司

Lightweight power battery pack

The invention provides a lightweight power battery pack. The lightweight power battery pack comprises a box body and a plurality of battery module groups arranged in the box body, and the box body comprises an upper sheet plastic cover plate and a lower cast aluminum box body matching with the upper sheet plastic cover plate; every battery module comprises a battery stack formed by vertically stacking a plurality of battery modules and copper sheets, copper bars arranged at two ends of the battery stack, an insulating plate, a supporting plate, and a plurality of screws; the copper sheets are arranged between every two adjacent battery modules; and the copper bars are arranged at the outer side of the battery stack, the insulating plate is arranged at the outer side of the copper bars, the supporting plate is arranged at the outer side of the insulating plate, the battery stack, the copper bars, the insulating plate and the supporting plate are provided with connecting holes corresponding to the screws in quantity, and the screws traverse through the connecting holes on the battery stack, the copper bars, the insulating plate and the supporting plate to connect the battery stack, the copper bars, the insulating plate and the supporting plate into one body. The lightweight power battery pack has the advantages of effectively improved integration level and energy density, improvement of the production efficiency and the safety of the battery module group, and reduction of the production cost.
Owner:格林美(武汉)新能源汽车服务有限公司

Power supply system for refrigeration container in railway storage yard

The invention discloses a power supply system for a refrigeration container in a railway storage yard. The power supply system comprises a power supply pile arranged on the floor at the edge of the railway storage yard, and further comprises a container power supply conversion switch, a container power supply socket and a power supply pile power supply socket which are arranged on the side surfaceof the bottom of the first layer of container side by side, wherein two or multiple layers of containers can be stacked at the top of the first layer of container according to a matching result of the area of the railway storage yard and the number of containers on a train; and container power supply conversion switches, container power supply sockets and power supply pile power supply sockets are arranged on the side surfaces of the bottoms of the two or multiple layers of containers side by side. According to the power supply system for the refrigeration container in the railway storage yard, a "one pile to two box" or "one pile to multiple boxes" power supply mode that charging pile supplies power to the containers and/or the charging pile supplies power to the first layer of containerand the first layer of container supplies power to the two or multiple layers of containers is realized, so that a refrigeration container power supply scheme is optimized, which makes the power supply mode for refrigeration containers is more flexible, and the power supply fault rate is reduced.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP

Thermoelectric refrigerator, preparation method of thermoelectric refrigerator and electronic equipment

The invention provides a thermoelectric refrigerator, a preparation method of the thermoelectric refrigerator and electronic equipment. The thermoelectric refrigerator comprises two single crystal silicon substrates arranged oppositely and a plurality of semiconductor thermoelectric particles located between the two single crystal silicon substrates, wherein one side, facing the semiconductor thermoelectric particles, of each single crystal silicon substrate is provided with an insulating layer, and a conducting sheet is arranged between the insulating layer and the semiconductor thermoelectric particles, and is electrically connected with the semiconductor thermoelectric particles, so that the semiconductor thermoelectric particles can form a series connection circuit, wherein due to the fact that the semiconductor thermoelectric particles have the thermoelectric effect, the two monocrystalline silicon substrates of the thermoelectric refrigerator can conduct refrigeration and heating respectively. According to the invention, the monocrystalline silicon substrate is used as the substrate of the thermoelectric refrigerator, and the cost of the monocrystalline silicon substrate is low, so that the cost of the thermoelectric refrigerator is low.
Owner:HUAWEI TECH CO LTD

Serial-in parallel-out wireless power transmission system and control method thereof

The invention discloses a serial-in parallel-out wireless power transmission system and a control method thereof. The serial-in parallel-out wireless power transmission system comprises a first wireless power transmission module, a second wireless power transmission module, a transmitting end controller and a receiving end controller, the input end of the first wireless power transmission module is connected with the input end of the second wireless power transmission module in series, and the output end of the first wireless power transmission module is connected with the output end of the second wireless power transmission module in parallel; each wireless power transmission module adopts a single-stage control mode, so that the system structure is simplified, the loss is reduced, and the system transmission efficiency is improved; an input series connection mode is adopted, so that the voltage stress of an MOS tube is reduced under the condition of the same input voltage, the designdifficulty of a loose coupling transformer coil under the condition of low voltage output is also reduced, and the output capacity of the system is effectively improved by adopting a parallel connection output mode; and high-efficiency, reliable and balanced work of the system is realized through multi-loop control of input voltage, output voltage and output current in combination with a frequency conversion and phase shift control technology.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Series-type tethered aerostat and releasing method thereof

The invention relates to the technical field of aerostats, and discloses a series-type tethered aerostat and a releasing method thereof. The series-type tethered aerostat comprises (n+1) aerostat bodies used for forming a multilevel series structure and further comprises n auxiliary cables, wherein n is a positive integer; each aerostat body is correspondingly provided with a main cable, the maincables are further provided with auxiliary connecting positions used for connecting the first ends of the auxiliary cables, and the second ends of the auxiliary cables are detachably connected to auxiliary take-up and pay-off mechanisms; and the first end of the n main cable is connected with the n aerostat body, and the second end of the n main cable is provided with a detachable connector which is used for being connected with a main take-up and pay-off mechanism or the n+1 aerostat body. According to the series-type tethered aerostat, by arranging the auxiliary cables, series-type connection of the multiple aerostat bodies is achieved, the lift-off height is high, and the loading capacity is high; and according to the releasing method, two times of buoyancy transfer of the n aerostat body is achieved through the n auxiliary cable, and thus series-type connection and releasing of the multiple aerostat bodies are achieved conveniently and quickly.
Owner:ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI

Metal alloy series-connected imbricated photovoltaic module cell string and preparation method thereof

The invention relates to a metal alloy series-connected imbricated photovoltaic module battery string and a preparation method thereof. The imbricated photovoltaic module battery string is provided with a plurality of battery pieces; the front surface of each battery piece is provided with a front surface electrode, and the back surface of each battery piece is provided with a back surface electrode; the front surface electrode comprises a front fine gate electrode, a front main gate electrode and a front side main gate electrode, the front fine gate electrode is connected with the front main gate electrode, and the front main gate electrode is connected with the front side main gate electrode; and the main gate electrode on the front side of the previous cell and the electrode on the back side of the next cell are partially stacked and are connected together at the stacking part through the molten and solidified metal alloy to form series connection. According to the invention, the metal alloy is used for replacing traditional conductive adhesive, so that the problems of aging and resistance increase caused by long-term operation can be effectively solved, and meanwhile, the problem of fire caused by resistor heating can also be effectively solved.
Owner:SERAPHIM SOLAR SYST

Low noise amplifying circuit and radio frequency receiving front end circuit

The invention provides a low noise amplifying circuit and a radio frequency receiving front end circuit. The low noise amplifying circuit comprises: a first amplifying component, wherein a first inputend of which accesses a radio frequency input signal and amplifies the same; a second amplifying component, wherein the first input end of which accesses a radio frequency input signal and amplifiesthe same; a first selection circuit, wherein an output end of the first amplifying component is connected with a first load end or a second load end through the first selection circuit; a second selection circuit, wherein the output end of the second amplifying component is connected with the first load end or the second load end through the second selection circuit; an inductor, wherein one end of which is coupled to second input ends of the first amplifying component and the second amplifying component, and the other end of which is grounded; and an inductor adjusting circuit coupled to theinductor and suitable for adjusting the inductance value of the inductor. By adoption of the technical scheme of the invention, the gain and the noise performance of the low noise amplifying circuit in a carrier aggregation working mode can be improved.
Owner:SPREADTRUM COMM (SHANGHAI) CO LTD

Insertion-type double-face die bond all-round LED power type lamp filament module

The invention provides an insertion-type double-face die bond all-round LED power type lamp filament module. The module comprises a transparent substrate, connecting lines and multiple LED lamp filaments. The connecting lines comprise the first line, the second line and the third line, wherein the first line and the second line are combined on the first face and the second face of the transparent substrate respectively, and the third line is combined on the side face of the transparent substrate and connected with the first line and the second line. The first line and the second line respectively comprise multiple rows of connecting line buses connected in series. The connecting line buses comprise multiple connecting sections which are formed by multiple partitioning bands in a partitioning mode. The LED lamp filaments are connected to the connecting sections at the two ends of each partitioning band of the first line and the second line in a crossover mode so that the first line, the second line and the LED lamp filaments can be connected in series. The transparent substrate is adopted, the unique double-face die bond structure is adopted for achieving all-round light emitting of the high-power LED module, the space utilization rate of the component can be greatly increased, and the light emitting brightness of the component can be greatly improved. The structure is simple, and industrialization is easy to achieve.
Owner:SHANGHAI PN STONE PHOTOELECTRIC

Refrigeration system of low-temperature storage device, low-temperature storage device and control method

InactiveCN110986410ASimultaneous coolingTo achieve parallel connectionMechanical apparatusDomestic refrigeratorsElectric controlControl theory
The embodiment of the invention discloses a refrigeration system of a low-temperature storage device, the low-temperature storage device and a control method. The refrigeration system of the low-temperature storage device comprises a compressor, a condenser, an electric control module, an electric control valve and N evaporators, wherein N is an integer greater than 1, an inlet of the electric control module is connected with the condenser, N outlets of the electric control module are connected with a gas suction ports of the compressor through N refrigerant main paths correspondingly, one corresponding evaporator is arranged on each refrigerant main path, a refrigerant branch is arranged between the refrigerant main paths where any two evaporators are located, the refrigerant branches areconnected with the electric control valve, when the any two evaporators are the first evaporator and the second evaporator, the inlet of the electric control valve is connected with the outlet of thefirst evaporator, the first outlet of the electric control valve is connected with the inlet of the second evaporator through the corresponding refrigerant branch, and the second outlet of the electric control valve is connected with the gas suction port of the compressor.
Owner:HISENSE(SHANDONG)REFRIGERATOR CO LTD

Polymer thin-film solar cell with laminated structure

The invention discloses a laminated polymer solar cell, which comprises a base plate, an anode layer, an anode modification layer, a first active layer, a cathode modification layer, a cathode layer and an intermediate electrode consisting of an electronic transport layer, a metal layer and a hole transport layer, wherein the intermediate electrode consists of an n-type metallic oxide electron transport layer and a p-type metallic oxide hole transport layer which are high in light transmittance. A thin layer of metal is inserted between the two metallic oxides and the effective combination ofelectrons and holes. The active layers of up and down two sub-cells of the laminated polymer solar cell are mixtures of identical or different conjugated polymers. The open circuit voltage of the laminated solar cell is the sum of the open circuit voltages of the up and down two sub-cells, so the serial connection of polymer photovoltaic cells is realized. The combined intermediated electrode structure can be wildly used in laminated devices with active layers made of conjugated polymers of different light absorption ranges, so as to well match the light absorption of the whole cell with the solar spectrum and improve the energy conversion rate.
Owner:CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES

Three-degree-of-freedom large-stroke high-precision micro-positioning platform based on bridge-type amplifying mechanism

InactiveCN109584947BWith translationTranslational realizationInstrumental componentsBridge typeEngineering
The invention discloses a three-degree-of-freedom large-stroke high-precision micro-positioning platform based on bridge type amplification mechanisms. The three-degree-of-freedom large-stroke high-precision micro-positioning platform based on the bridge type amplification mechanisms comprises a base and an XY platform arranged in the base. The base and the XY platform are connected through four translation amplification mechanisms evenly distributed in the circumferential direction of the XY platform, and one of two adjacent translation amplification mechanisms is driven by a piezoelectric ceramic driver I and the other is driven by a piezoelectric ceramic driver II. A Z-direction mounting hole is formed in the middle part of the XY platform, and a Z-direction translation mechanism is arranged in the Z-direction mounting hole in a penetrating mode. The three-degree-of-freedom large-stroke high-precision micro-positioning platform is based on the bridge type amplification mechanisms, parallel connection and series connection are combined, three piezoelectric ceramic drivers are equipped, high-precision and large-stroke translation in the XYZ three directions is realized, and higherworking bandwidth and natural frequency are achieved.
Owner:TIANJIN UNIV

Monitoring the state of a temperature sensor

The invention relates to an apparatus (1) for determining and / or monitoring the temperature, comprising a first temperature sensor (17), a second temperature sensor (18) and electronics (14) which areconfigured to apply at least one electrical transmission signal (I S) in the form of an electrical current to the first temperature sensor (17) and / or the second temperature sensor (18) and to tap off at least one first and / or second electrical reception signal (U E1, U E2 ) in the form of an electrical voltage from the first temperature sensor (17) and / or the second temperature sensor (18). Theapparatus (1) also comprises at least six connection lines (19a-19f) for making contact, in particular electrical contact, with the first temperature sensor (17) and the second temperature sensor (18), wherein the connection lines (19a-19f) are arranged and configured in such a manner that the first temperature sensor (17) and the second temperature sensor (18) are connected in series and can havethe transmission signal (I S) applied thereto and in such a manner that the first reception signal (U E1) can be tapped off from the first temperature sensor (17) and / or the second reception signal (U E2) can be tapped off from the second temperature sensor (18).
Owner:EHNDRESS KHAUZER GMBKH KO KG
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