1439 results about "Accumulator (energy)" patented technology

The invention relates to methods and systems for the storage and recovery of energy using open-air hydraulic-pneumatic accumulator and intensifier arrangements that combine at least one accumulator and at least one intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor / pump, coupled to a combination electric generator / motor on the fluid side of the circuits.

The invention relates to systems and methods for rapidly and isothermally expanding and compressing gas in energy storage and recovery systems that use open-air hydraulic-pneumatic cylinder assemblies, such as an accumulator and an intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor / pump, coupled to a combination electric generator / motor on the fluid side of the circuits. The systems use heat transfer subsystems in communication with at least one of the cylinder assemblies or reservoir to thermally condition the gas being expanded or compressed.

A flow management system capable of providing adjustable hydraulic fluid flow or pressure at a common line to supply bidirectional pumps in electro-hydrostatic actuation systems and conditioning re-circulated hydraulic fluid. The system enables flow sharing between multiple actuation systems and minimization of energy consumption by a power-on-demand approach and / or electrical energy regeneration while eliminating the need for an accumulator. The system has particular application to electro-hydrostatic actuation systems that typically include bi-directional electric motor driven pumps and unbalanced hydraulic actuators connected within closed circuits to provide work output against external loads and reversely recover energy from externally applied loads.

The invention relates to methods and systems for the storage and recovery of energy using open-air hydraulic-pneumatic accumulator and intensifier arrangements that combine at least one accumulator and at least one intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor / pump, coupled to a combination electric generator / motor on the fluid side of the circuits.

The invention relates to an energy production arrangement having a plurality of DC choppers (101, 103, 105) for converting the present input voltages into output voltages, and the plurality of energy stores (107, 109, 111) for providing the input voltages, wherein an energy store is associated with each DC chopper (101, 103, 105), and wherein an output voltage of at least one DC chopper (101, 103, 105) of the plurality of DC choppers (101, 103, 105) can be adjusted as a function of a prescribed target value, in order to individually load the energy store (107, 109, 111) associated with the at least one DC chopper (101, 103, 105).

The invention is a power output switching method and control system of power assembly of mixed power saloon car. It can switch the power output and manage system energy, and according to state switching boundary value and result judgment of data collection, makes the power assembly switch to the states such as reclaiming plugging energy; charging accumulator by engine; electric driving; mixed driving; engine driving; etc to make coordination treatment. Its control system includes main chip, as well as switch quantity conditioning circuit, analogue quantity conditioning circuit, pulse signal conditioning circuit, CAN bus interface, D / A converting circuit, drive isolating circuit, etc, where they are all connected with the main chip. It can make the output torque realize fast smooth switch in a large range, and heightens the energy using efficiency.

The mixed energy storage device for elevator includes super capacitor bank, accumulator set, super capacitor charging and discharging circuit, charging and discharging circuit for accumulator. Through super capacitor charging and discharging circuit, super capacitor bank is connected to DC bus in power supply system for elevator. Through charging and discharging circuit for accumulator, accumulator set is connected to DC bus. Using circuits for controlling charging and discharging super capacitor and accumulator, the invention realizes uninterrupted power supply and power buffering. Features are: minimizing installed capacity of super capacitor bank and accumulator set, optimizing working state of charging and discharging accumulator set, reducing number of charging and discharging cycle and prolonging service life etc. In the mixed energy storage device, accumulator set exchanges energy with DC bus only through one stage of DC / DC so as to raise efficiency of storing energy greatly.

The invention discloses a road surface energy collection system, comprising multiple road surface energy collection devices connected in series or in parallel. Then the multiple road surface energy collection devices are connected with a rectification circuit and a filter circuit. Each road surface energy collection device comprises a casing, a sealing ring, a pressure plate, array cantilever beam piezoelectric energy accumulators and a vibration block. The vibration block is arranged in the middle of the casing. A pressure spring is arranged between the vibration block and the bottom of the casing. The array cantilever beam piezoelectric energy accumulators are arranged on the vibration block in pair. Each array cantilever beam piezoelectric energy accumulator comprises a cantilever beam; the cantilever beam is provided with a piezoelectric layer; a tail end of the cantilever beam is provided with a first permanent magnet; an inner wall of the casing, corresponding to the first permanent magnet, is provided with a second permanent magnet; and adjacent ends of the first and second permanent magnet are identical in polarity. The lower surface of the pressure plate presses the upper end of the vibration block. The road surface energy collection system is suitable for road surface engineering installation and has a good characteristic of low-frequency broadband stochastic resonance.

The invention discloses a hydraulic transmission-based method and a hydraulic transmission-based device for storing energy and realizing stabilized voltage and constant frequency in wave power generation. In the device, a floating pendulum is connected with a hydraulic cylinder, high pressure oil outputted by a non-rod cavity of the hydraulic cylinder enters a high pressure energy storing device and an oil inlet of a variable motor through a control integrated valve and through a high pressure oil tube, low pressure oil outputted by an oil outlet of the variable motor enters a low pressure big-capacity energy storing device and returns to the rod cavity of the hydraulic cylinder through the control integrated valve, the main shaft of the variable motor is connected with a permanent magnet synchronous generator, and the permanent magnet synchronous generator is connected to a rectifying module and a direct-current electric energy charging-discharging control module and then connected to a stepless unload adjustable load and a storage battery. The high pressure energy storing device and the low pressure big-capacity energy storing device realize the energy storage by absorbing the fluctuation, caused by the change of transient waves, of pressure and flow rate. A controller realizes the pressure stabilization constant frequency by the stepless unload adjustable load and the displacement of the hydraulic motor respectively. The device has the advantage of making the wave power generating device output more smoothly, more free from influence of the wave impact and have higher efficiency.

The invention relates to a device for making use of natural energy sources, in particular to a wind-light complementation heat collecting system provided with energy storage devices, which comprises a wind power generation apparatus, a solar heating device, a control device, a heat exchange water tank and a heat radiator connected with the heat exchange water tank, wherein an electric heater is arranged in the heat exchange water tank, the wind power generation apparatus is electrically connected with the electric heater in the heat exchange water tank, and the solar heating device is connected with the heat exchange water tank through a pipeline; and the device is characterized in that energy storage devices are arranged in both the solar heating device and the wind power generation apparatus. The device has the following advantages that: a sodium sulfate decahydrate phase change energy storage material is adopted to make a heat accumulator for storing a large quantity of heat energy for supplying heat continuously and stably under a condition without sunlight and wind. The complete set of system is controlled by a PLC, the centralized control capability is high, and the high reliability of an intelligent system is high.

The invention relates to a method for preparing high-quality lead dioxide through lead slime of waste lead acid storage batteries, comprising the following steps that: the lead slime in the waste lead acid storage batteries is taken out, washed repeatedly to neutrality, dried, and crushed into lead slime powder the granularity of which is over 200 meshes; the lead slime powder is mixed with a water solution which contains a dispersant and a desulfurizer according to a certain proportion, and then the mixture is fully stirred and desulfurized for 1 to 24 hours at a room temperature of 90 DEG C; separation is performed to remove a liquid part, and lead-bearing solid materials obtained are fully dried; the lead-bearing solid materials are mixed with a water solution which contains oxidant according to a certain proportion, and the mixture is fully stirred and oxidized for 1 to 2 hours at a room temperature of 90 DEG C; and separation is performed to remove a liquid part, and a solid part obtained is the lead dioxide after washing and drying. The method prepares the lead dioxide through the lead slime in the waste lead acid storage batteries, and has low cost and energy consumption, simple equipment, and high lead recovery rate and product quality of the lead dioxide.

The mixed energy storage device for elevator includes super capacitor bank, accumulator set, super capacitor charging and discharging circuit, charging and discharging circuit for accumulator, circuit for controlling charging and discharging super capacitor, circuit for controlling charging accumulator, and circuit for controlling discharging accumulator. Through super capacitor charging and discharging circuit, DC bus is connected to super capacitor bank; and through charging circuit for accumulator, the super capacitor bank is connected to the accumulator set. Thus, energy flows to the accumulator set from the super capacitor bank. Through discharging circuit for accumulator, accumulator set is connected to DC bus; and energy flows to DC bus from the accumulator set. The invention realizes uninterrupted power supply and power buffering. Features are: minimizing installed capacity of super capacitor bank and accumulator set, optimizing working state, and prolonging service life.

The invention discloses a fuel cell thermal management system with heat accumulation and heating functions and a control method. The fuel cell thermal management system comprises water circulation systems including a small circulation waterway system, a large circulation cooling system, a deionized water circulation system and the like and a control system which takes an ECU (Electric Control Unit) as a core. According to the fuel cell thermal management system disclosed by the invention, the small circulation waterway system is capable of realizing a low-temperature heating function on a fuel cell by adopting a heat accumulator, so that compared with a traditional electric heater technology, the fuel cell thermal management system has the advantages that the control accuracy is higher, and the fuel cell thermal management system is more energy-saving and efficient; meanwhile, as the deionized water circulation system is adopted, an ion exchanger is skillfully designed on a degassing pipe of a large circulation waterway, a degassing function and a deionizing function of the fuel cell thermal management system are perfectly combined together, and the influence of a high-water-resistance ion exchanger in the prior art on a main circulation waterway is effectively avoided.

The invention discloses a combined wave power generation device provided with oscillating buoys as well as a measurement and control system of the device. The power generation device and the measurement and control system are included, multiple groups of hiding platforms can be arranged according to the installed capacity, and multiple oscillating buoys are mounted on each hiding platform. On the basis of a traditional wave power generation device provided with oscillating buoys, a hydraulic energy storage system, a tide level adaptation system and a wave detection system are designed. The hydraulic energy storage system controls energy storage and energy release of energy accumulators to drive a power generator to generate power according to the upper limit and the lower limit of energy storage pressure of an energy accumulator group in combination with real-time wave information. According to the device, multi-point energy absorption replaces traditional single-point energy absorption, immediately captured wave energy can be maximized, the measurement and control system can cooperate with the combined wave power generation device provided with the oscillating buoys, multiple defects of shorter wave period, small wave height and low energy flux density of national offshore wave energy resources can be effectively overcome, and maximum-efficiency conversion of wave energy to power and maximum-efficiency utilization of the power are realized.

The invention discloses a transportation system of multi-power driving electrical vehicle with changeable battery collecting box, belonging to the vehicle and traffic transporting field. The system comprises system matching facility constituted by changeable battery collecting box, vehicle collecting box device, suspension of straight-driven electrical vehicle, multiple-power driving electrical vehicle, vehicle electrical-control system, portable combined charging station, double-direction transportation machine of collecting box and repair truck of electrical vehicle. The changeable battery collecting box is hung on the chassis of electrical vehicle by the vehicle collecting box device. The multi-power driving electrical vehicle is driven by the motor on suspension of straight-driven electrical vehicle under the control of vehicle electrical-control system. The replacement of new and ole battery collecting box is carried out between the portable combined charging station and electrical vehicle by the double-direction transportation machine of collecting box. The repair truck of electrical vehicle is used for replacement work of battery collecting box in driving journey of electrical vehicle so that the transportation system can achieve purposes of high-efficiency driving, energy saving and circumstance protection.

The invention provides a zero-consumption seawater desalination facility based on comprehensive utilization of solar energy and belongs to the technical field of seawater desalination. The facility comprises a bubbling evaporator, a saline water tank, a fresh water tank and a solar energy utilization device. A solar energy air type heat collector is connected with a bubbler to heat up air entering the bubbling evaporator; a solar heater is connected with the bubbling evaporator to heat saline water in the evaporator; a solar photovoltaic cell panel is connected with a water tank, an induced draft fan, a solenoid and an accumulator through a solar photovoltaic controller to provide power for the whole facility, and the accumulator serves as a standby auxiliary power supply. Once being generated by the bubbler, air bubbles are subjected to heat and mass transfer with saline water in the bubbling evaporator continuously during rising so as to absorb moisture. High-humidity air is introduced to the saline water tank from the bubbling evaporator to achieve condensing and back heating, and vapor is condensed to generate fresh water to flow into the fresh water tank while saline water is preheated. The facility utilizes solar energy comprehensively, is effective, and is simple in structure and easy to promote.

The invention relates to a design and manufacture method of valve-controlled sealed lead-acid accumulator for electric vehicle with high specific energy and deep cycle and long service life, wherein by the modification of a battery cover structure, the changes of charging / discharging state and temperature are monitored in real time for every 2V single battery of 4-24V of the whole accumulator; the positive and negative columns of the single battery are made of metal inserts; metal plates are connected between the metal inserts; the inserts and metal plates are all made of copper, aluminum and nickel and the like with densities less than the density of lead and conductivities better than the conductivity of lead; the surfaces of the inserts and the metal plates are all coated with lead, tin-lead or tin-lead-sliver alloy; the positive and negative pole plates are both thin pole plates; and 0.1%-2% of silica powder with an average grain diameter of 3-15 microns, 0.02%-0.5% of lignin and 0.5%-1.5% of conductive graphite are added in active substances which are diachylon; the use ratio of the active substances is greatly improved; ultra-fine glass fiber clapboards and a polyethylene (PE) clapboard are combined; and the accumulator in the invention is ensured to have the characteristics of high energy-density and deep cycle and long life.

The invention discloses an optimal scheduling model of a micro-energy grid with multi-energy storage under multi-time scales, which relates to the field of energy internet optimization operation. Themicro-energy network comprises three energy forms of electricity, heat and gas, including P2G equipment, a heat and power co-generation micro-combustion engine, an electric boiler, a gas boiler, an accumulator, a heat storage tank and a gas storage tank. The multi-time scale considers two time scales, one hour before the day and 15 minutes within the day. The process of establishing the optimal scheduling model of the micro-energy grid comprises the following steps: 1, determining the component parameters and the network parameters of the micro-energy network; 2, establishing an hour-level optimized dispatch model before that day of the micro-energy grid; 3, establishing a micro-energy grid intra-day 15-minute level optimal scheduling model. The invention effectively deals with the power fluctuation of the renewable energy and the load prediction error on the premise of ensuring the daily operation energy balance of each energy storage device, and improves the absorbing capacity of themicro-energy grid to the wind power and the photovoltaic.

A wireless remote centralized ground blowout preventer and choke manifold control system and a wireless remote centralized ground blowout preventer and choke manifold control method belong to the technical field of petroleum and natural gas well control. A choke manifold hydraulic throttle control device, a centralized control box, a driller control station and a wireless remote control station are added to an existing energy accumulator device. Integration of a ground blowout preventer and a choke manifold on a hydraulic control and electric control system structure is realized through the choke manifold hydraulic throttle control device and the centralized control box. The driller control station and the wireless remote control station respectively provide a unified ground blowout preventer and choke manifold control operation interface, and implement wired remote centralized control and wireless remote centralized control on the ground blowout preventer and the choke manifold in a wired connection mode and in a wireless connection mode. The risk of man-made misoperation is reduced, remote control is realized, and the emergency handling ability of the system is improved. Real-time data acquisition display and record on key parameters of the ground blowout preventer and the choke manifold is realized. The structure layout of the control system is optimized, and the size is reduced.

The device (10) has a fluid accumulator (22) to store and deliver pressurized fluid. A hydraulic motor (16) acts as a hydraulic pump (20) conveying the fluid in the accumulator in an energy recovery mode. The motor is driven by the fluid delivered by the pump in a driving mode. The pump supplies the motor with the fluid collected from a high-pressure-less reservoir in the driving mode. The motor is supplied with the fluid by the pump withdrawing the fluid from the reservoir in the energy recovery mode. An independent claim is also included for an assembly comprising a transmission device, a shaft and a mass.

The invention discloses a device for improving output efficiency of a miniwatt photovoltaic cell and a method thereof, belonging to the electrooptical technical field. In the invention, based on the optimum voltage control method, by arranging a supercapacitor and an optimum voltage controller between the photovoltaic cell and an energy accumulator and taking advantage of the characteristic of low essential resistance of the supercapacitor, the terminal voltage Vc of the supercapacitor directly affects the output voltage Vs of the photovoltaic cell; and by controlling the charge-discharge process of the supercapacitor to control the output voltage of the photovoltaic cell, the photovoltaic cell can work in a maximum power output area, thus effectively improving the output efficiency of the photovoltaic cell. Compared with the traditional method, the invention has the advantages of simple circuit and low self power consumption, and is suitable for being used in a miniwatt micro photovoltaic system.

The invention discloses an alloy material for a high-energy accumulator grid and a preparation method thereof. The alloy material is prepared from the chemical compositions in percentage by weight: 0.06-0.14 percent of Ca, 0.1-2.0 percent of Sn, 0.01-0.06 percent of Al, 0.01 -0.1 percent of Zn, 0.001-2.0 percent of rare earth and the balance of Pb, wherein the rare earth is one or two of Er and Ybor the mixture of Ho, Er, Tm and Yb. The preparation method comprises the following steps: adding Ca, Al and the rare earth to a crucible electric cooker according to the mixture ratio, and vacuumizing and then introducing nitrogen gas for protection at the temperature of 600-900 DEG C, and then smelting; adding Pb, Sn and Zn according to the mixture ratio, smelting at the temperature of 550-650DEG C and evenly mixing the mixture, sampling after the mixture is static (regulating alloy compositions according to the sample compositions), then fishing out dregs, keeping the temperature at the temperature of 550-650 DEG C for 0.5-3 hours, and then cooling; controlling the cooling speed at 10<2>K to10<5>K / S.

The invention relates to a hydraulic driving-based wind turbine and control method thereof. The control method of the wind turbine comprises the following steps of: realizing the transmission from an impeller to a generator by adopting a hydraulic driving mode; before synchronization, controlling the adjustment of the displacement of a variable hydraulic motor by a controller through detecting the rotating speed of a permanent magnet synchronous generator to realize the constant frequency control of the permanent magnet synchronous generator and enabling the output frequency of the permanent magnet synchronous generator to meet the synchronization requirement; and after synchronization, controlling the adjustment of the displacement of the variable hydraulic motor by the controller through detecting the rotating speed and the output power of the impeller to realize the variable speed control of the impeller and enabling the impeller to capture maximum wind energy. According to the hydraulic driving-based wind turbine disclosed by the invention, the stepless speed change can be realized by adopting the hydraulic driving mode; an energy accumulator can absorb energy fluctuation caused by transient wind speed, so that rigid impact on the wind turbine due to the fluctuation of wind speed can be avoided to a certain degree. On the basis of realizing the constant frequency control, the utilization rate of energy can be increased and the cost is saved.

The invention discloses a hydraulic overload protecting device of a gas spring energy accumulator with a manual oil pumping function. The hydraulic overload protecting device and a slide block hydraulic cushion form a closed loop. A plunger is driven by a pneumatic proportional pressurizing piston to extrude oil liquid in a system, so that the pressure of the oil liquid of the slide block hydraulic cushion reaches the required working pressure value from the initial pressure. When a pressing machine is overloaded, a pressure indicator transmits a signal to enable an electromagnetic valve to act to switch an air channel, the proportional pressurizing piston drives the plunger to quickly move to restore, a pressurizing cavity is communicated with a pressure-releasing cavity, and the oil liquid in the slide block hydraulic cushion is quickly released to the gas spring energy accumulator. After a pressing machine slide block is overloaded to surpass a bottom dead centre, the oil liquid of the gas spring energy accumulator can be automatically supplemented back into the slide block hydraulic cushion, and the initial working state is quickly restored. Once an overload failure is cleared, the pressing machine can immediately normally work again according to a program. The pressing machine with the hydraulic overload protecting device is reliable in work and long in maintenance-free period.

The invention discloses a hybrid energy source system for an electric vehicle, and a control policy thereof. The system comprises a hardware circuit and a controller; the hardware circuit comprises abattery pack, a super-capacitor bank, a two-way DC / DC interface circuit one and a two-way DC / DC interface circuit two, of each the battery pack and the super-capacitor bank, connected with a DC bus, and an interface circuit between the battery pack and the super-capacitor bank; the controller comprises an interface circuit controller and an energy management controller; the interface circuit controller can maintain dynamic balancing of each battery monomer voltage in the charging / discharging process according to a battery pack charging / discharging voltage-sharing control program, and also canproduce a control signal to realize the direct energy exchange of two types of storage energy, so that the super-capacitor is operated in an excellent state of charge and can give full play to the power regulating capacity. The energy management controller realizes the reasonable distribution between an accumulator and the super-capacitor.

The invention discloses a brake valve electro-hydraulic drive system with an emergency shut valve function and a brake valve. The brake valve electro-hydraulic drive system includes a motor, a hydraulic pump, an integrated control valve, an actuating cylinder, an energy accumulator and a hydraulic oil tank, and is mainly characterized in that the system has the energy accumulator emergency function; the system works in two modes, namely, a speed regulating mode and a normal mode; when the system works in the speed regulating mode, the energy accumulator has a medium energy storage function when working normally, so that the motor power can be effectively reduced, and the speed of a switch is higher; the system has the self-diagnostic function, is safe and reliable, and can judge whether the system is working normally or not according to the real-time signals detected by a pressure sensor; the system integrates the manual emergency function, and when no power is provided, the valve can be manually opened and closed repeatedly.

A variable-speed volume-control direct-drive all-electric hydraulic excavator drive and energy recover system the control drive circuit of which includes the A, B, C energy source, boom cylinder control valve group, arm cylinder control valve group, bucket control valve, swing control valve, swing motor control valve group, left travel control valve, right travel control valve, eight 2-position 2-way valve, I and II 2-position 3-way valve, I and II accumulator. The drive control circuit adopts open control independent-cavity variable-speed pump-control volume direct-drive circuit. Each of the cavities of cylinder is controlled by an energy source and the pressure and flow rate of the cavities are adjusted by the rotational speed and torque control of the generator independently. The present invention is four-quadrant running and have advantages of high efficiency, high integrity, low consumption, redundancy energy source, no need for pilot supply, low noise, integrate recovery of kinetic and potential energy.

An opening flap comprises a frame and a flap articulated thereto. A lift arm is provided, which is articulated by a principal energy accumulator. A secondary energy accumulator is articulated between the lift arm and the flap. The principal energy accumulator delivers the opening motion of the flap into a position before the dead center thereof. The secondary energy accumulator, which is distinctly weaker, delivers the subsequent opening motion.

The present invention provides an emergency starting device, including a first output end and a second output end, wherein the first output end is used for being connected to a positive electrode of an accumulator battery in an engine starting system and the second output end is used for being connected to a negative electrode of the accumulator battery; the device includes a super-capacitor, a controller and a DC-DC booster circuit, wherein the controller receives first electrical signal from the accumulator battery and electrically connects the super-capacitor and the accumulator battery to start the engine with energy stored in the super-capacitor when the first electrical signal changes suddenly, the DC-DC booster circuit increases the output voltage of the accumulator battery to charge the super-capacitor. The invention further provides an emergency starting method accordingly. By using the super-capacitor, the controller and the DC-DC booster circuit the invention fits in various severe environments and can start an engine in emergency permanently and effectively.

A vehicle charging station charges an energy accumulator of a battery-driven vehicle. The charging station has a base which is arranged in the vicinity of a pre-defined parking position of the vehicle and an arm. The arm has a first member which extends longitudinally and one end is rotatably mounted in a revolute joint situated on the base and is rotary driven by a rotary drive and a second member mounted in a linear guide on the first member and moves in the direction of the longitudinal extension by a linear drive. The end of the second member facing away from the linear guide is connected to a supply-contact. A control unit controls the rotary drive and the linear drive, such that the supply-contact moves back and forth from an idle position into a working position, in which electrical contact is made between the supply-contact and a receiving-contact device.