72results about How to "Increase volumetric power density" patented technology

A glucose fuel cell for reception into a given constrained volume of implantation in a vertebrate in which the glucose fuel cell has access to fluid containing glucose. The fuel cell includes an anode adapted to oxidize the glucose, a cathode adapted to reduce an oxidant, and a membrane disposed between the anode and the cathode and separating the anode from the cathode. At least one of the anode or cathode define a flexible sheet that is geometrically deformed to be receivable into the given constrained volume of implantation and increase volumetric power density. Related methods of making a glucose fuel cell of this type and implantable assemblies including the glucose fuel cell are also disclosed.

A fuel cell (1) of the present invention includes a stacked body of a membrane electrode assembly (3) including anode and cathode electrode layers on both surfaces of an electrolyte membrane (7) and of separators (2). Then, the membrane electrode assembly (3) and the separators (2) are formed into a substantially rectangular shape, the separators (2) are smooth or include flow passages, and each of the electrode layers includes a gas diffusion layer and a catalyst layer. Moreover, an aspect ratio R as a ratio (flow passage length/flow passage width) of a flow passage length with respect to a flow passage width on a cathode side or anode side of the membrane electrode assembly (3) is 0.01 or more to less than 2. Furthermore, a horizontal direction equivalent diameter D (mm) of the gas diffusion layer or the flow passages satisfies Expression (1):

D=B×(R×Acat)^1/3  Expression (1)

(where Acat is a catalyst area (cm²) of the membrane electrode assembly (3), and B is a constant of 0.005 or more to 0.2 or less).

The invention relates to an external-rotor-typed motor with a plurality of rotors and stators, comprising a motor part and a controller part; wherein, at least two groups of the motor parts which share one rotor shell are provided; the rotor shell is divided into at least two cavities by a supporting frame which is fixed with the rotor shell; a magnetic steel in each cavity is rotatablely connected on the rotor shell; simultaneously, a rotation shaft is pressed in the supporting frame so as to form a structure with the coaxial output of a plurality of rotors; an end cover is symmetrically arranged at two ends of the shell and is matched with the shell and locked to the shell; simultaneously, the end cover is closely matched with the stator punching sheet and movably sheathed with the rotation shaft. A stator winding is connected with the controller part. The design adopts the proposal of one rotor shell and coaxial output, and has the balanced supporting at the middle, thus having the advantages of balanced torque, large volume power density, compact structure, large torque and the like.

The invention provides a fuel cell metal bipolar plate and a fuel cell and relates to the technical field of fuel cells. The fuel cell metal bipolar plate comprises a first flow field single plate anda second flow field single plate. A first runner comprises a first trench ridge and a first trench groove. A second runner comprises a second trench ridge and a second trench groove. The height and width of the first trench ridge and the second trench ridge are in a range of 100-1000 microns. The width of the first trench groove and the second trench groove are in a range of 50-1000 microns. Airis fed into an oxidant inlet and flows out of an oxidant outlet along the first runner. Hydrogen is fed into a flue gas inlet and flows out of a flue gas outlet along the second runner. The fuel cellmetal bipolar plate effectively improves mass transfer of gas in a flow field, improves the effective use of the catalyst layer area, improves the surface current density of the fuel cell, improves the volume power density of the fuel cell and solves the problem that the runner grooves of the existing metal bipolar plate limit a heat and electron conduction distance and the runner ridges of the existing metal bipolar plate limit a water and oxygen diffusion distance.

The invention relates to a fuel cell bipolar plate sealing structure, and the structure is used for sealing among an anode plate, a membrane electrode and a cathode plate, and comprises an insulatingpaint layer, an adhesive and a sealing element, wherein the insulating paint layer and the adhesive are both sprayed on the anode plate or the cathode plate; the insulating paint layer is sprayed on the edge area of the polar plate, and the adhesive is coated on the reaction area of the polar plate; the membrane electrode is fixed on the polar plate through an adhesive, and the sealing element ispositioned in a sealing groove of the polar plate. Compared with the prior art, the invention has the advantages of high volume power density of the galvanic pile, simpler assembly, low leakage risk and the like.

The invention relates to an efficient full-screen flow field bipolar plate for a fuel cell and a battery stack thereof. Through arrangement of the bipolar plate and the battery stack, the flow field and the sealing design can be achieved in the plane of the entire bipolar plate to reduce a traditional bipolar plate anode and cathode gas and coolant inlet and outlet frame and the seal design thereof. The outer frame seal design of the bipolar plate and a battery stack metal outer end design achieve the gas and coolant inlet and outlet functions; and the battery stack assembling employs box-typeseal assembling, and a screw beam fastening assembling design is employed to ensure the whole seal and long-term anti-vibration fastening of the battery stack. The bipolar plate and the battery stackhave high effective area rate, save the bipolar plate base material, reduce the bipolar plate processing difficulty, simplify the membrane electrode assembly outer frame preparation and have high volume ratio power of the battery stack and long-time stability and fastening of the battery stack compared to the traditional bipolar plate design.

The invention provides a heat-conducting device and a battery module. The heat-conducting device comprises a first heat dissipation plate and a heat-conducting plate, wherein the heat-conducting plate comprises a first heat-conducting part, a second heat-conducting part and a third heat-conducting part; the first heat-conducting part and the second heat-conducting part are connected through the third heat-conducting part; the third heat-conducting part is arranged between the side surfaces of two adjacent batteries in the battery module; the first heat-conducting part is arranged on the upper end surface of the battery module; the second heat-conducting part is arranged on the lower end surface of the battery module; the first heat dissipation plate is arranged on the upper end surface of the battery module and is in contact with the first heat-conducting part; the first heat dissipation plate is connected with two end plates respectively; the heat-conducting plate is used for transmitting heat generated by the battery module to the first heat dissipation plate; and the first heat dissipation plate is used for releasing the heat, so that cooling of the battery module is achieved. The heat-conducting plate in the heat-conducting device is relatively small in size, simple in structure and relatively low in cost, so that the volumetric power density of the battery module is improved; and furthermore, the structure of the battery module is simple and the cost is reduced.

The invention relates to a technique for preparing synthetic gas from wet carbon dioxide by electrocatalysis, belonging to the technical field of application of catalytic membrane reactors. According to the method, a microtubule electrocatalytic membrane reactor is connected with an external power supply to form an electrolysis cell, wet CO2 is introduced to the cathode side, and helium gas or any other inert gas is introduced to the anode as purge gas, thereby obtaining oxygen at the anode side and synthetic gas at the cathode side. The microtubule electrocatalytic membrane reactor is prepared by the following steps: preparing the three-layer composite ceramic microtubules by a phase-inversion-improved cospinning-cosintering technique, and impregnatingg an anode outside the sintered three-layer composite ceramic microtubules, wherein in the cospinning process, a four-annular-hole spinneret mold is adopted to perform three-layer coextrusion one-step formation. The microtubule electrocatalytic membrane reactor is applied to the field of electrocatalytic preparation of synthetic gas from wet carbon dioxide; and the membrane reactor adopted by the method has the advantages of high volume power density, small size, high mass transfer and heat transfer efficiency and high mechanical properties, and can implement thermal insulation and sealing more easily.

The invention discloses a permanent magnet speed regulator comprising a driving shaft, a driven shaft, permanent magnet rotor sets, rotor windings, a speed regulating device and a high molecular plastic carrier. The permanent magnet rotor sets are connected with the driving shaft in a transmission way. The high molecular plastic carrier is connected with the driven shaft in a transmission way. The axes of the driving shaft and the driven shaft are overlapped. The permanent magnet rotor sets are provided with permanent magnet rotors and used for generating a varying magnetic field in rotation of the driving shaft. The rotor windings are arranged on the high molecular plastic carrier. The rotor windings are connected with the speed regulating device and used for regulating the rotating speed of the driven shaft. The high molecular plastic carrier is manufactured by high molecular plastics so that the supporting structure can be optimized, the rotational inertia can be reduced, the servo-actuating performance of the rotor windings can be enhanced and regulation is enabled to be more rapid and accurate; and the wear rate between the rotor windings and the carbon brush can be reduced so that the service life can be enhanced.

The invention discloses a compact flat-plate solid oxide direct carbon fuel cell stack, which comprises a bubble column, a bubble column plate-fin, flat-plate fuel cell monomers, a grid plate, a solid carbon fuel and the like, wherein the bubble column has a rectangular structure; both sides of the middle upper part of the bubble column are plate-fin-shaped; the flat-plate fuel cell monomers are arranged on an opening on a plate-fin wall surface; an anode faces inward; a cathode faces outward; the fuel cell monomers are connected in series or in parallel through a current collecting lead to ensure the working voltage and current needed by the cell stack; the grid plate is arranged at the bottom of the bubble column; the solid carbon fuel is laid on the grid plate; an inlet anode carrier gas is fed into the bubble column through the grid plate to blow solid carbon fuel particles and keep the solid carbon fuel particles in a bubble fluidization state; an anode support, electrolyte support or cathode support type flat-plate fuel cell monomers can be adopted by the cell stack; and the working temperature of the cell stack is between 600 DEG C and 1,000 DEG C. The cell stack has a compact and reasonable structure, a larger area for the installation of a fuel cell is provided, and the volume power density of the cell stack is increased.

The invention discloses a carbon felt with a pouring sealant, an electrode containing the carbon felt and a flow battery pile. A pore in the middle of the carbon felt is filled with the pouring sealant; the flow battery electrode comprises a carbon felt with pouring sealant and a plastic frame plate sleeved at the periphery of the carbon felt, and the edge sealed by the pouring sealant is welded in the plastic frame plate through laser; and the surface of the plastic frame plate is engraved with a flow channel for electrolyte circulation. The carbon felt is divided into the left part and the right part through the pouring sealant, electrons are directly transmitted through the carbon felt, the resistance of the bipolar plate body and the contact resistance between the bipolar plate and thecarbon felt are reduced, and the battery performance is greatly improved. According to the flow battery pile, a bipolar plate is not needed, so that the cost can be reduced; and meanwhile, the thickness of the galvanic pile can be reduced, the volume power density is improved, and the consumption and the cost of shell materials are reduced.

The invention provides a novel fuel cell integrated system. The system comprises a support frame, an electric pile module, a hydrogen auxiliary system, an air auxiliary system and a cooling circulation system, the support frame is of a double-layer frame structure arranged up and down. The electric pile module is arranged on the upper layer of the support frame, the hydrogen auxiliary system, theair auxiliary system and the cooling circulation system are arranged on the lower layer of the support frame, the structure is simple, disassembly and assembly are convenient, the size is small, and the problem that an existing centralized fuel cell system is difficult to disassemble and assemble can be effectively solved.

The invention discloses a fuel cell stack, a fuel cell and a vehicle. The fuel cell stack comprises at least four pull rods and insulating rods with the same number as the pull rods; the at least four pull rods are distributed on the four side surfaces of the fuel cell stack; each pull rod comprises a pull rod body and connecting parts located at the two ends of the pull rod body; the pull rods are connected with the side surface of a gas inflow end plate and the side surface of a blind end sealing plate of the fuel cell stack through the connecting parts; the side surfaces of the gas inflow end plate and the blind end sealing plate are respectively provided with sinking grooves for accommodating the connecting parts, and the connecting parts are connected with the sinking grooves; the insulating rods are arranged between the stack core of the fuel cell stack and the pull rod main bodies, and two ends of each insulating rod are respectively in contact with the gas inflow end insulating plate and blind end insulating plate of the fuel cell stack. According to the fuel cell stack, the area of the end plate does not need to be enlarged during insulation and fastening in the packaging direction of the fuel cell stack through side surface connection and the arrangement of the sinking grooves, the size of the fuel cell stack is effectively reduced, and the volume power density is favorably improved.

The invention relates to a fuel cell stack and a fuel cell automobile. The fuel cell stack comprises two end plate structures and a plurality of unit cells which are connected between the two end plate structures through bolts and are connected in series, and each unit cell comprises two bipolar plates and a membrane electrode arranged between the two bipolar plates, wherein each bipolar plate comprises a main plate body, a plurality of gas flow channels and a plurality of cooling flow channels are arranged on the main plate body at intervals, the flow channel depths of the gas flow channels and the cooling flow channels are 0.28-0.32 mm, the flow channel fillet radiuses are 0.09-0.11 mm, the flow channel periods are smaller than or equal to 1 mm, the flow channel inclination angles are smaller than or equal to 5 degrees, and the plate thickness of the main plate body is 0.09-0.11 mm. According to the present invention, the problem that the fuel cell stack in the prior art can only beapplied to some specific places due to the size, the weight and the like, thereby greatly restricting the popularization and application of the fuel cells, can be solved.

The invention discloses an electric pile end plate with gas pressure buffering and dehumidifying functions. A first end plate is of a hollow structure, and an inner cavity of the first end plate is partitioned into a fuel gas side gas-inlet buffering area and an oxidant gas side gas-inlet buffering area by a partition plate; and a fuel gas side humidifying water supplementing opening and an oxidant gas side humidifying water supplementing opening are further formed in the side walls of the fuel gas side gas-inlet buffering area and the oxidant gas side gas-inlet buffering area correspondinglyand used for filling the fuel gas side gas-inlet buffering area and the oxidant gas side gas-inlet buffering area with humidifying water correspondingly, the heights of the water levels of the humidifying water on the two sides are larger than the height of a fuel gas end plate inlet and the height of an oxidant gas end plate inlet correspondingly. The electric pile end plate has the gas pressurebuffering and dehumidifying functions, the humidity of gas entering an electric pile is adjusted and changed through design of the buffer areas and the humidifying water temperature, the performanceof the electric pile is exerted advantageously, the service life of the electric pile is prolonged advantageously, and thus the electric pile operates more stably and is longer in service life.

The invention provides a metal flat tube supporting body, a battery/electrolytic cell and a battery stack structure. The metal flat pipe supporting body structure comprises a closed end, a porous structure, a fuel gas flow channel and an open end. The closed end and the open end are respectively positioned at two ends of the porous structure; the fuel gas flow channel is arranged in the porous structure and is used for circulating fuel gas; the closed end is of a compact structure and is used for sealing the first end of the fuel gas flow channel. According to the structure provided by the invention, the closed end and the open end are in contact with the electrolyte layer, so the purpose of self-sealing is achieved, and the sealing problem existing in the metal-supported solid oxide fuelcell is effectively solved.

The invention provides a proton exchange membrane fuel cell engine integrated device for a vehicle, and belongs to the technical field of fuel cell engines. The device comprises an electric pile module, an electric control module, and an air module, a hydrogen module and a cooling module which are positioned at the lower part of the electric pile module, the electric pile module comprises an electric pile module base plate of an integrated component, the air module comprises an air module bottom plate of the integrated component, the hydrogen module comprises a hydrogen module bottom plate of the integrated component, and the cooling module comprises a cooling module bottom plate of the integrated component. The air module bottom plate, the hydrogen module bottom plate and the cooling module bottom plate are fixed below the electric pile module bottom plate through structural parts, so that integration is realized; and the electric pile module is connected with all parts in the air module, the hydrogen module and the cooling module through pipeline interfaces. Energy optimization control and stable operation of the engine are achieved through modular design, the reliability of the engine is improved, the service life of the engine is prolonged, the integration level is high, and the device is suitable for buses.

The invention discloses a microporous layer structure, a preparation method, a membrane electrode assembly and a fuel cell. According to the technical scheme, the microporous layer comprises a first regional microporous layer and a second regional microporous layer which are sequentially arranged in a first direction; the porosity of the first regional microporous layer is less than that of the second regional microporous layer; the most probable pore diameter of the first regional microporous layer is greater than that of the second regional microporous layer; the average pore diameter of thefirst regional microporous layer is greater than that of the second regional microporous layer. Therefore, water balance can be realized without additionally arranging a humidifier, the overall costof the fuel cell system is effectively reduced, and the volume power density of the system is improved.

The invention belongs to the technical field of fuel cell preparation, and particularly relates to a molten carbonate fuel cell sealing structure and a preparation method and application thereof. The molten carbonate fuel cell sealing structure comprises an electrode, a punched plate and a flow field plate which are sequentially arranged in a stacked manner according to the descending order of the sizes of diagonal lines. The molten carbonate fuel cell sealing structure can have high sealing performance under the condition that a sealing piece is not additionally arranged, the leakage risk is reduced, meanwhile, when the molten carbonate fuel cell sealing structure is applied to cell preparation, the distance between electrodes can be reduced, and the volume power density of the cell can be increased; in addition, the weight of the molten carbonate fuel cell sealing structure can be reduced without additionally arranging a sealing element, and the power density is further improved.

The invention belongs to the technical field of hydrogen fuel cells, and particularly relates to a liquid-cooled stacked cell assembly and a hydrogen fuel cell stack, and the liquid-cooled stacked cell assembly comprises single cells and a cooling area used for feeding and discharging cooling liquid which are sequentially connected in series and stacked; the liquid-cooled stacked battery assembly is divided into a rapid cooling area A close to a liquid-cooled source and a slow cooling area B far away from the liquid-cooled source; a cooling area is arranged in the rapid cooling area A at an interval of two single batteries; and a cooling area is arranged in the slow cooling area B every other single battery. The hydrogen fuel cell stack comprises an outer shell, the outer shell is hollow and is provided with openings at two ends, the liquid cooling superposed cell assembly is arranged in the outer shell, and the openings at the two ends of the outer shell are closed. The fuel cell disclosed by the invention belongs to a metal plate liquid-cooled galvanic pile, and has the advantages of simple structure, easiness in assembly, high power generation efficiency, small volume, high power density, single cell consistency and the like.