8results about How to "Large energy storage" patented technology

The invention relates to the technical field of ship mooring, and particularly discloses a flywheel energy storage type wharf ship auxiliary mooring system and a control method.The flywheel energy storage type wharf ship auxiliary mooring system comprises an energy storage module, a transmission module, a winch module and an electric control module, the winch module comprises a winch and a mooring cable, one end of the mooring cable is connected with the winch, and the other end of the mooring cable can be connected with a ship so that the ship can be moored; the energy storage module comprises a flywheel, the flywheel has an energy storage state and an energy release state, the energy storage state and the energy release state of the flywheel are switched by the electric control module according to the tension of the mooring line, and under the condition that the tension of the mooring line is too large, namely the ship has the offshore motion trend, the flywheel can absorb the ability of the ship to drive the mooring line to be released by offshore motion. Under the condition that the tension of the mooring line is too small, the flywheel releases energy to drive the winch to wind the mooring line, tensioning of the mooring line is achieved, real-time adjustment of the tension of the mooring line can be achieved, the mooring requirement of a ship is better met, meanwhile, the flywheel is used for storing and releasing energy, and energy consumption can be greatly reduced.

The invention discloses a carbon dioxide energy storage cooling and heating system utilizing off-peak electricity and an operation method of the carbon dioxide energy storage cooling and heating system. Comprising a carbon dioxide loop; the carbon dioxide loop comprises a liquid CO2 storage tank, a cold supply heat exchanger, a gaseous CO2 storage device, a compressor, a heat supply heat exchanger, a pressure reducing valve and a gas-liquid separator; an outlet of the liquid CO2 storage tank is connected with a CO2 side inlet of the cold supply heat exchanger; a CO2 side outlet of the cold supply heat exchanger is connected with an inlet of gaseous CO2 storage equipment; an outlet of the gaseous CO2 storage equipment is connected with an inlet of the compressor; an outlet of the compressor is connected with a CO2 side inlet of the heat supply heat exchanger; a CO2 side outlet of the heat supply heat exchanger is connected with an inlet of the pressure reducing valve; an outlet of the pressure reducing valve is connected with an inlet of the gas-liquid separator; a gas outlet of the gas-liquid separator is connected with an inlet of the compressor, and a liquid outlet of the gas-liquid separator is connected with an inlet of the liquid CO2 storage tank. According to the system, off-peak electricity can be fully utilized, energy storage and flexible supply of cold energy and heat energy are achieved, operation is reliable, the energy utilization efficiency is high, and economical efficiency is good.

The invention discloses a heat compensation type carbon dioxide mixed working medium energy storage system with a cascade heat storage function. The heat compensation type carbon dioxide mixed working medium energy storage system at least comprises a cascade heat storage subsystem, a carbon dioxide mixed working medium energy storage subsystem and a heat compensation subsystem. The cascade heat storage subsystem comprises a plurality of stages of heat storage units with different temperatures, each stage comprises a heat storage heat exchanger, a high-temperature heat storage medium storage tank and a low-temperature heat storage medium storage tank, and heat energy utilization is optimized. The carbon dioxide mixed working medium energy storage subsystem comprises a high-pressure storage tank, a low-pressure storage tank, a compressor unit and an expansion unit, and efficient compression in the energy storage stage and efficient expansion in the energy release stage are achieved. The heat compensation subsystem is arranged between the highest-temperature-stage heat storage unit and the expansion unit, heat compensation is conducted on the carbon dioxide mixed working medium through the photo-thermal subsystem and / or industrial waste heat, the temperature of the carbon dioxide mixed working medium is increased, and the circulation efficiency of the system is improved. In addition, the system further comprises a waste steam recovery subsystem, and the evaporation efficiency and the energy utilization efficiency are further improved through high-temperature waste steam exhausted by the turbine.

The invention discloses a novel battery pack with an energy storage structure, which comprises a box body assembly, a battery pack and a battery pack, the supporting assembly is arranged near the middle of the box body assembly in the height direction, and the supporting assembly divides the box body into an upper-layer space and a lower-layer space; the upper-layer space is divided into an electrical chamber and a battery chamber; the battery modules are arranged in the lower-layer space and the battery chamber; the electrical assembly is mounted in the battery chamber; and the box cover covers the box body assembly. In a limited space, the energy storage capacity is increased as much as possible, and matching with the whole vehicle is not affected.

The invention provides a nickel oxide nano triangular electrochromic energy storage difunctional material and a preparation method thereof, and belongs to the field of functional films. The multifunctional material has an amorphous porous nanometer triangular island-shaped structure, nickel oxide nanometer triangles have excellent electrochromic performance and energy storage performance at the same time, the energy storage state of the material can be observed in real time through the color change of the material, the nickel oxide nanometer triangular difunctional material takes FTO conductive glass as a substrate, and the nickel oxide nanometer triangular island-shaped structure is prepared through the method. The thin film is of an amorphous porous nanometer triangular island-shaped structure. The nickel oxide nano triangular film with the amorphous porous nano triangular island-shaped structure is prepared by utilizing a unique oxygen partial pressure pulse control technology, the electrochromic performance and the energy storage performance of the material are greatly improved, and the nickel oxide nano triangular film is suitable for being applied to energy-saving / energy-storage dual-function devices or other advanced energy devices.

The utility model provides an elastic contact connector structure and an automobile wire harness. The elastic contact connector structure comprises an elastic column assembly and an elastic contact assembly, the elastic column assembly comprises a double-end elastic piece, an installation cylinder and a movable column, a movable through hole is formed in the installation cylinder, and a limiting ring groove is further formed in the movable through hole. An annular limiting block is arranged on the peripheral wall of the movable column in a protruding mode and limits the movable column to move in the movable through hole, the double-end elastic piece comprises a first elastic piece and a second elastic piece which are arranged in the limiting annular groove, the first elastic piece and the second elastic piece are arranged in the movable column in a sleeving and abutting mode, and the pitch of the second elastic piece is smaller than that of the first elastic piece; the elastic contact assembly comprises a contact ring piece, a contact block and a buffer spring, one end of the buffer spring fixes the second fixing plate, the other end of the buffer spring is connected to the contact ring piece, and the contact ring piece abuts against the contact block. Due to the elastic pieces at the two ends, excessive extrusion on the contact ring pieces is reduced, the contact ring pieces can move when being stressed, and durability is improved.

The utility model discloses a compressed air and carbon dioxide energy storage system of combining, utilize piston ring, plugging support plate, sealing washer and annular groove constitute novel air film structure, can guarantee the sufficient rise of this novel air film structure when carbon dioxide cavity is in the negative pressure state, provide sufficient space for the filling of air in air cavity, when carbon dioxide cavity fills in carbon dioxide, can carry out sufficient compression to the air in air cavity through novel air film structure, wherein the air cavity and carbon dioxide cavity space adjustment range is wider, and the energy storage capacity is greater, and cooperation the setting of auxiliary spring can also effectively reduce the friction loss between carbon dioxide cavity expansion and push novel air film structure down process and breathing energy storage tank, and energy storage tank adopts detachable design, can realize novel air film structure's convenient taking out replacement, can effectively reduce maintenance cost while reducing construction cost.

The utility model provides a distributed stacked energy storage system, which comprises a solid-state battery module, a power module, a PCS module and an energy management and control module, the energy management and control module is responsible for driving, protection and temperature control of the system, the power module is used for realizing maximum power output for converting light energy into electric energy, and the solid-state battery module is used for storing and releasing the electric energy. The PCS module is used for realizing bidirectional energy conversion between the battery pack and a power grid; the output end of the energy management and control module is connected with the input end of the power module, the output end of the power module and the output end of the solid-state battery module are connected with the input end of the PCS module, and the input end of the solid-state battery module is connected with a power grid. Power output expansion is realized through parallel connection of the power modules while maximum power point output is guaranteed; the output voltage of the battery in each solid-state battery module is consistent with the voltage of the direct-current bus, so that parallel series flow can be avoided, and the efficient utilization of the battery is realized.