38results about How to "Realize series and parallel connection" patented technology

The invention relates to an LED (light emitting diode) integrated structure with a cooler. A plastic member is fixed with a heat radiation base plate through a fixed post and a stopping part, and an LED chip is directly fixed on the heat radiation base plate with a die bond process and is arranged in a corresponding first through hole; a layout circuit conducting layer extends into a part between the side wall of the first through hole and the LED chip, and a conducting wire and the LED chip are arranged in the first through hole; the cooler comprises a flow passage casing, a cooling flow passage and a cooling medium flowing driving device, wherein the flow passage casing is arranged at one side of the heat radiation base plate in deviation from the LED chip, and the cooling flow passage is used for accommodating cooling media and is formed between the flow passage casing and the heat radiation base plate; the back side of the LED chip is completely covered by the cooling flow passage, and the fixed post and the heat radiation base plate are sealed with gas or liquid; and one side of the heat radiation base plate in deviation from the LED chip is in direct contact with the cooling media. The LED integrated structure has the advantage of reducing the heat resistance of intermediate links to the maximum degree and achieving a good heat radiating effect, and the cooler has high heat exchange speed and good cooling effect.

The invention discloses an LED (light emitting diode) lamp which comprises a light-emitting lamp cover, a cooling base, more than two LED light emitting units, a layout circuit conductive layer electrically connected with the more than two LED light emitting units, and a lamp cap, wherein the LED light emitting units are fixed on the cooling base; cooling straight through holes matched with the arrangement manner of the LED light emitting units are arranged among the LED light emitting units, each LED light emitting unit is adjacent to one cooling straight through hole; the cooling straight through holes penetrate through the light-transmitting lamp cover and the cooling base; the two ends of the cooling straight through holes are both communicated with outside air to form a convective air cooling channel; cooling fins are extend to one surface of the cooling base, which faces the lamp cap; each cooling fin is provided with a clamping groove, and bosses matched with the clamping grooves are arranged at the inner side of the lamp cap; the two ends of the cooling straight through holes are both communicated with outside air, and lateral clearances between the cooling straight through holes and the cooling fins form a convective air cooling channel. The LED lamp has the advantages of simple structure, convenience in installation, good cooling effect and attractive appearance.

The invention relates to a hydraulic control system for a manual steering hydraulic power tractor. The hydraulic control system comprises a power pump station, a hydraulic pressure gauge, a hydraulic control valve bank, a plunger type cylinder and a hydraulic motor. The power pump station comprises a motor, an oil tank, a liquid level and liquid temperature gauge, an air filter, an absorbed oil filter, an oil hydraulic pump, a one-way valve, an overflow valve and a return oil filter. The hydraulic control valve bank comprises an M-type three-position four-way hand change-over valve, an overflow valve, a hydraulic change-over valve, a Y-type three-position four-way hand change-over valve, a two-position four-way hand change-over valve, a hydraulic control one-way valve and a throttling valve. By means of the hydraulic control system, control over stretching and contraction of the plunger type cylinder at a working position and changeover between a high driving gear and a low driving gear in the running process can be conveniently achieved under different loading conditions, the system structure is simple, operation is convenient and fast, control is simple, safety and reliability are achieved, and potential safety hazards of operators are eliminated.

The invention discloses a battery system which can be formed by directly performing series-parallel connection on unit batteries. A plurality of unit batteries on a positive plate, a negative plate and a plurality of intermediate polar plates respectively form a battery in quantity, and all batteries in quantity are connected in series to form the battery system; the positive terminal and the negative terminal of each unit battery are circular ring-shaped columnar metals of which the bottom parts protrude outwards; the external diameter of the circular ring-shaped columnar part of each positive terminal is equal to the internal diameter of the circular ring-shaped columnar part of each negative terminal; the outer surface of the circular ring-shaped columnar part of each positive terminal is provided with threads; the outwards protruded part of the bottom part of the circular ring-shaped columnar part of each positive terminal is fixedly arranged on a nut cap; the inner surface of the circular ring-shaped columnar part of each negative terminal is provided with threads; and the outwards protruded part of the bottom part of the circular ring-shaped columnar part of each negative terminal is fixedly arranged at the bottom part of each unit battery. By adopting the technical scheme, the unit batteries with the structures can be directly connected in series and in parallel; spot welding or laser welding does not need to be performed on finished-product batteries according to a traditional method, and thereby, the damage and the uncertainty possibly caused to the batteries by the spot welding and the laser welding are completely eliminated. Moreover, the detachability and the replaceability of the battery system are thoroughly realized.

The invention discloses a 18650 standard lithium battery pack which comprises a standard square shell. Two lithium battery modules are arranged in the square shell, each lithium battery module comprises two battery supports, 20 battery core holes are transversely formed in each battery support, 18650 lithium battery cores are arranged in the battery core holes, connection pieces are arranged on the outer sides of the two battery supports, the lithium battery cores are connected in parallel through the connection pieces, the top ends of the outer sides of the two battery supports are each provided with two protruding blocks, the protruding blocks and the top end faces of the battery supports form an installation base, a lithium battery protector is fixed to the installation base and is connected with a pin, and an insulating plate is disposed between the two lithium battery modules. The battery supports similar to a honeycomb shape are adopted in a standard module structure so that the lithium battery cores of different numbers can be connected to the battery supports, lithium battery packs of different voltages are manufactured, production cost is greatly lowered, reliability is good, and lead acidification and modularization of lithium batteries are truly achieved.

The invention provides a reconfigurable isolated multilevel converter, which comprises isolated power supplies V1 and V2, a power switch tube S1, and power diodes D1 and D2, wherein the power switch tube S1 and the power diodes D1 and D2 form a serial-parallel switching circuit, and the output voltage and the current of the unit are controlled through on and off of the S1; the positive electrode of the D1 is connected with the positive electrode of the V2; the negative electrode of the D1 is connected with the positive electrode of the V1; the positive electrode of the D2 is connected with the negative electrode of the V1; the negative electrode of the D2 is connected with the negative electrode of the V1; the source electrode of the S1 is connected with the negative electrode of the V1; the drain electrode of the S1 is connected with the positive electrode of the V2; and the positive electrode of the V1 and the negative electrode of the V2 form positive and negative electrode output ends of the converter respectively. According to the reconfigurable isolated multilevel converter topology, the basic unit is an isolated voltage source unit, serial-parallel connection of the basic unit can be realized at the same time by only one power switch and two diodes, and besides, serial-parallel combinations can be nested with applications, which can be applied to a low-power low-voltage multilevel situation and also a high-power high-voltage situation.

The invention relates to the technical field of underground nuclear power stations, and discloses an air-borne radioactive filtering system of an underground nuclear power station. The system comprises a containment, a pressure relief cavity and a ground surface water pool, wherein the containment, the pressure relief cavity are positioned in an underground rock stratum; a standby pipeline group and a filtering device are arranged in the pressure relief cavity; the filtering device comprises an air inlet, an air outlet and a Venturi filter group which, wherein the head and the tail of the Venturi filter group respectively communicate with the air inlet and the air outlet; the Venturi filter group comprises a plurality of filters communicating with one another through pipelines in the standby pipeline group; the standby pipeline group is provided with a standby stop valve group; the standby stop valve group comprises a plurality of stop valves which are arranged on the pipelines for realizing serial and parallel connection of the filters through opening and closing; an air inlet communicates with the interior of the containment through a pressure relief pipe; the air outlet communicates with a ground surface chimney through a pressure relief discharge pipeline; and the filtering device is also connected with the ground surface water pool through a ground injection pipeline and aground discharge pipeline. According to the air-borne radioactive filtering system for the underground nuclear power station, the number of the accessed filters can be flexibly set according to severity of an accident, replacement in service can be realized easily, and the service life is long.

The invention relates to a non-sealing solid oxide fuel battery pack with double gas channels, belonging to the field of electrochemical power generation. The non-sealing solid oxide fuel battery pack solves the problems that single batteries in a conventional single gas-chamber solid oxide fuel battery pack have nonuniform gas atmosphere, which affects the output voltage and output power of the battery pack. The battery pack is formed by connecting a plurality of single batteries in series or in parallel through connecting sheets, wherein a fuel-enriched vent pipe and an oxygen-enriched ventpipe are arranged relatively in parallel, the battery pack is arranged between the fuel-enriched vent pipe and the oxygen-enrich vent pipe, a plurality of fuel ports are arranged on the lateral wall of the fuel-enriched vent pipe with equal intervals, a plurality of oxygen ports are arranged on the lateral wall of the oxygen-enriched vent pipe with equal intervals, each fuel port corresponds to an anode of the single battery, each oxygen port corresponds to a cathode of the single battery, the anode and the cathode of the battery pack are respectively led out through an anode lead wire and a cathode lead wire, fuel-enrich gas is filled in the fuel-enriched vent pipe, and oxygen-enrich gas is filled in the oxygen-enriched vent pipe. The invention is mainly applicable to power generation.

The invention discloses an automobile battery pack capable of enhancing thermal management safety based on nested lithium ion batteries. The battery pack comprises an insulating shell, K insulating positioning connecting plates are arranged in the insulating shell along the vertical direction, and M rows and N columns of nested lithium ion batteries are arranged on each layer of positioning connecting plate to form battery pack units; each battery pack unit can independently output and can also be connected in series or in parallel to form a battery pack for output; the nested lithium ion battery comprises a metal shell and a battery cell filling the shell, the shell comprises an inner cylinder and an outer cylinder, the inner cylinder is located in a through hole in the center of the outer cylinder, and a gap exists between the side wall of the inner cylinder and the secondary outer wall of the outer cylinder. The battery cell comprises an outer battery cell and an inner battery cell.Based on the characteristics of the nested lithium ion battery, through reasonable heat pipe design, air duct design and grouping scheme, the internal thermal management performance of the battery pack is enhanced, the temperature of each battery can be detected on the premise of controlling the number of temperature sensors as much as possible, and the reliability and fineness of temperature monitoring are improved.

An LED dot matrix display and a combined dot matrix display. The dot matrix display comprises a heat dissipation submount (1), a PCB (2), LED light emitting units that are arranged uniformly, an imaging controller, a layout circuit conductive layer, and a plastic board (4). The LED light emitting units each comprise more than one LED chip (5), a wire used for electrically connecting the LED chips (5) and the layout circuit conductive layer, and a transmissive package colloid (3) used for packaging the LED chips (5). An external sidewall (13) of a closed chamber (24) for sealing the plastic board (4) and the heat dissipation submount (1) is arranged between the plastic board (4) and the heat dissipation submount (1), the plastic board (4) being used for forming the transmissive package colloid (3) that packages the LED chips. The heat dissipation submount (1), the external sidewall (13) of the closed chamber (24) and the plastic board (4) form the closed chamber, and the PCB board (2) is accommodated in the closed chamber (24). The heat dissipation submount (1), the plastic board (4), and the transmissive package colloid (3) are in direct contact with the external air. The dot matrix display constituted in this way has a simple structure, a low cost, and desirable water-proof and heat-dissipation effects.

The invention discloses a battery system which can directly use single batteries connected in series and parallel. Positive and negative plates, several single cells on several intermediate plates form a parallel battery pack, and the parallel battery packs are connected in series to form a battery system; the positive and negative terminals of the single battery are circular rings protruding from the bottom Cylindrical metal, the outer diameter of the circular cylindrical part of the positive terminal is equal to the inner diameter of the circular cylindrical part of the negative terminal. The inner surface of the annular cylindrical part is provided with threads, and the outward protruding part of the bottom is fixed on the bottom of the single battery. With this technical solution, the single cells of the structure can be directly connected in series and parallel, without the need for spot welding or laser welding on the finished battery according to the traditional method, which completely eliminates the damage and uncertainty that may be caused to the battery by spot welding and laser welding In addition, fully realize the detachability and replaceability of the battery system.

The invention discloses an LED (light-emitting diode) dot matrix display screen which comprises a heat-dissipating substrate, LED light-emitting units, an imaging controller and a layout circuit conducting layer, wherein the LED light-emitting units are uniformly arrayed; each LED light-emitting unit is separately electrically connected with the imaging controller through the layout circuit conducting layer; the LED light-emitting units are fixed on the heat-dissipating substrate; the central position of every four adjacent LED light-emitting units is provided with a straight heat-dissipating through hole, each LED light-emitting unit is adjacent to the straight heat-dissipating through hole, and the straight heat-dissipating through hole passes through the heat-dissipating substrate; the LED dot matrix display screen also comprises a display-screen outline border, and the display-screen outline border is provided with an accommodating cavity (the bottom surface thereof is provided with an opening); and a position (facing to each LED light-emitting unit) on the front surface of the display-screen outline border is provided with a through hole for covering the LED light-emitting unit, the through hole is provided with a light-pervious seal plate, a position (close to the upside of the display-screen outline border) on the back face of the display-screen outline border is provided with heat-dissipating holes, and the back face of the display-screen outline border is also convexly provided with a rain cover for preventing rainwater from entering the accommodating cavity. The LED dot matrix display screen has the advantages of good heat dissipation and waterproof properties.

The invention discloses a new type of ultra-thin end lead wire for a laminated assembly. Through the principle of mutual insertion, two parts of the ultra-thin end lead wire are formed. The stamping pattern is arranged without gaps on the ultra-thin substrate to be stamped, and the left-end lead pattern and the right-end lead pattern are symmetrical and intersect each other. One stamping forms two end leads and one stamping residue. After removing the stamping residue, the obtained two ends The lead wires cooperate with conventional bus bars to realize series and parallel connection of laminated batteries. The invention adopts the principle of inter-plugging, makes full use of the effective area of ​​the ultra-thin bus bar substrate, and can form two ultra-thin terminal leads in one stamping, and the residual amount after stamping is small, which improves the stamping efficiency of the ultra-thin terminal leads and reduces material costs; The stamped back-end leads are combined with conventional bus bars to realize series-parallel connection of laminated modules, reduce the electrical loss at the return end, increase the power of laminated modules, and improve the market competitiveness of laminated technology.

The invention discloses an air cooling device utilizing cold air flow to conduct saline water cooling. The air cooling device comprises an air cooling wall structure, a saline water pump and a saline water storage device. The air cooling wall structure comprises one or more layers of air coolers. Each air cooler comprises one or more air cooling installation units. Each air cooling installation unit comprises a fin pipe bundle frame, a fin pipe bundle, a vertical shutter, a transverse shutter and a draught fan, wherein the fin pipe bundle, the vertical shutter, the transverse shutter and the fan are arranged on the fin pipe bundle frame, the transverse shutter is arranged between the two corresponding transversely-adjacent fin pipe bundles and connected into an N-shaped structure together with the fin pipe bundles, and the vertical shutter is arranged on the portion, close to the air inlet of the fin pipe bundle, of the fin pipe bundle frame. By means of the air cooling device, natural wind can flow down to achieve heat exchange, the air cooling device is suitable for large-scale heat exchange, saline water is used as heat exchange agent so that the air cooling device can be safe and reliable, and meanwhile the heat exchange area can be adjusted according to actual requirements.

The invention provides a back contact CdTe solar cell and a manufacturing method thereof, and the method comprises the steps: providing a transparent substrate, and forming a CdTe light absorption layer on the transparent substrate; activating the CdTe light absorption layer by adopting an activation annealing process; forming n-type semiconductor layers and p + heavily doped semiconductor layers which are alternately arranged on the surface of the CdTe light absorption layer, wherein the n-type semiconductor layers and the p + heavily doped semiconductor layers are separated by insulating patterns; metallization is carried out on the n-type semiconductor layer and the p + heavily doped semiconductor layer, a metal electrode alpha connected with the n-type semiconductor layer area and a metal electrode beta connected with the p + heavily doped semiconductor layer area are formed, and the metal electrode alpha and the metal electrode beta are arranged in an interdigitated mode.

The invention discloses a nested structure lithium ion battery capable of reducing a risk of thermal runaway. The nested structure lithium ion battery comprises a metal shell and a battery cell filling the shell, the shell comprises an inner cylinder and an outer cylinder, the inner cylinder is located in a through hole in the center of the outer cylinder, and a gap exists between the side wall ofthe inner cylinder and the secondary outer wall of the outer cylinder. The battery cell comprises an outer battery cell and an inner battery cell, the cavity of the outer cylinder is filled with theouter battery cell, and the cavity of the inner cylinder is filled with the inner battery cell. According to the invention, the battery core is divided into two parts, so that the outer battery core or the inner battery core can work intermittently when in use, or the other battery core is started after one battery core is used up. The gaps are used as heat dissipation channels in a high-temperature environment, so that heat can be quickly dissipated, and accidents caused by overheating are prevented; when the battery is used in a low-temperature environment, the inner battery core is enabledto work firstly, the outer battery core is heated by heat generated by the inner battery core during working, and the battery core or the inner battery core is enabled to work simultaneously after thetotal temperature rises to a normal working state, so that the temperature of the battery can be adjusted in various modes.

The invention provides a fluidized bed cathode solid oxide fuel cell, and the fuel cell combines fluidization engineering and a solid oxide fuel cell technology, and provides a novel cathode fluidized bed electrode solid oxide fuel cell technology. The fuel cell is not of a traditional 'sandwich' structure, fine electrode particles are fluidized by air flow on the air side of the cell, and the fluidized electrode particles are used as the cathode of the cell. According to the process, the cathode mass transfer rate and the reaction interface can be obviously increased, reduction of cathode concentration polarization and activation polarization is facilitated, and in addition, the heat transfer rate of the fluidized electrode is relatively high, so that reduction of thermal stress damage caused by non-uniform reaction of the battery is facilitated.

A lithium battery connecte structure for flexible package relates to that technical field of chemical power supply, and is characterized in that at least a printed circuit board is arranged in which aserie-parallel circuit is arranged; A plurality of mounting holes are arranged on the printed circuit board; The mounting hole is arranged on the series-parallel circuit; A plurality of lithium battery cells, M lithium battery cells correspond to one mounting hole, and battery pole ears of the lithium battery cells are inserted into the mounting hole to be communicated with series-parallel circuits; At least one connector connected with the peripheral device is fixed on the printed circuit board and connected with the series-parallel circuit. The invention adopts a printed wiring board as themain body of battery connection, and the printed wiring board has multiple functions. At first, that battery electrode lug is mechanically connected with the printed circuit board through a screw, and the fixation of the battery electrode lug is realized. The method is simple and easy to operate, reduces the human cost of the operation of the battery group, and saves space; At the same time, it can avoid the harm caused by human error.

A manufacturing method of LED integrated structure includes molding a heat radiating substrate (1,50,100,200,251,401,450,500), molding a patterned circuit conductive layer (7,55,107,212,214,216,218,220,222,407,455,507), molding plastic members for positioning lenses or molding lenses, fixing the chips, electrically connecting the LED chips (3,51,110,208,209,210,403,451,510) with the printed circuit conductive layer (7,55,107,212,214,216,218,220,222,407,455,507), and encapsulating the LED chips (3,51,110,208,209,210,403,451,510) and leads (54,454). The manufacturing method has simple process and low manufacturing cost, and the manufactured LED integrated structure has good heat radiation, precise position relation of the lenses and the chips, high luminous flux, and good optical effect.