132 results about "Battery energy storage" patented technology

The present application relates to the technical field of power energy storage, and particularly relates to a multi-battery energy storage system SOC equalization control method based on event triggering, aiming at the phenomenon of large calculation and periodic communication overhead in the prior art, and solving the problem of limited SOC equalization control accuracy in a large-scale system. The core of the method is to combine a distributed dynamic equalization control protocol and an event triggering mechanism to realize on-demand communication and power distribution among multiple batteries in the system, and to reduce the communication frequency and calculation complexity of the system. The method is suitable for multi-battery energy storage systems with high efficiency and reliability requirements.

This application discloses a planar scanning-based immersion battery thermal runaway identification device and method, relating to the field of battery energy storage safety monitoring technology. The device consists of a fully enclosed immersion tank, immersion liquid, ultrasonic phased array sensors located at the corners of the inner wall of the tank, and a signal processing module. The sensors are installed below the liquid surface and above the individual battery cells, emitting fan-shaped ultrasonic beams to form a horizontal logical scanning plane covering the entire diagonal length of the bottom surface of the module. This identification method employs active scanning and physical feature extraction logic: first, an environmental acoustic impedance reference spectrum is established using phased array beams; then, echo changes within the scanning plane are monitored in real time. This invention effectively eliminates the interference of battery bulging and mechanical vibration on traditional monitoring methods, achieving refined characterization and centimeter-level precise positioning of the gas-generating physical characteristics during the thermal runaway evolution process, significantly improving the intelligent safety level of immersion energy storage systems.

The utility model discloses a quick assembly's oil -immersed battery energy storage connector, a quick assembly's oil -immersed battery energy storage connector, including the power end, charging line and charging end that connect gradually, be provided with a plurality of partial pressure line in the charging line, the one end of charging line is provided with the container box, the one side of container box is provided with the deployment subassembly, just a plurality of partial pressure line all are connected with deployment subassembly, the other side of container box is provided with the plug box, be provided with splicing subassembly between charging line and charging end for the quick assembly of multiple voltage and battery socket, the middle part of container box is provided with the winding shaft, the outside of winding shaft is provided with the winding spring, just the winding spring is connected with charging line, the top of winding shaft is provided with the winding shaft of being located container box upside. This battery energy storage connector can adapt to multiple specifications battery, realize the quick assembly of different state connector, make things convenient for the charging use of battery.

A kind of household immersed battery energy storage device, including outer box, immersed inner box and energy storage battery group;The immersed inner box is located in the inside of outer box, and the energy storage battery group is located in the inside of immersed inner box;Immersed inner box inside is also filled with for the immersion cooling energy storage battery group immersion coolant;The energy storage battery group is made of several battery monomers, and insulation spacer is arranged between adjacent battery monomers and between the energy storage battery group and the immersed inner box around the energy storage battery group, and insulation partition is arranged between the bottom of the energy storage battery group and the immersed inner box.The utility model discloses by setting immersed inner box, can effectively guarantee the safety and uniformity of energy storage battery group;By setting insulation spacer and insulation partition, both ensure that the battery monomers and the energy storage battery group and the outside environment maintain electrical isolation, and can provide space for the flow heat exchange of immersion coolant.

The invention relates to a vehicle underbody protection element (10) for a battery energy store (12) of an at least partially electrically driven motor vehicle (200), comprising a core piece (14) of flat design made of a thermoplastic first plastic material, at least one lower cover layer (16u) and at least one upper cover layer (16t) made of a fiber-reinforced, thermoplastic second plastic material, a plurality of rib-like support elements (18) protruding from the uppermost cover layer (16t) for supporting the vehicle underbody protection element (10) at the battery energy store (12). It is proposed that at least one plate element (20) made of metal is arranged between the upper cover layer (16t) and the core piece (14) and / or between the lower cover layer (16u) and the core piece (14), which plate element is oriented along adjacent support elements (18). Furthermore, the invention relates to a battery energy store (12) and to a motor vehicle (200).

The application discloses a new energy empowerment non-cell large-scale MIMO intelligent AP deployment method based on K-means and DDPG, which comprises the following steps: constructing an AP deployment optimization problem in a new energy empowerment scene, selecting a specified number of APs from all AP candidate positions in non-uniform distribution, cooperating with UEs in a service network, and realizing an optimization target of maximizing average power grid energy efficiency under the condition of battery energy storage; adopting a geographic-energy dual-dimensional clustering mechanism, clustering all AP candidate positions based on a K-means algorithm, and selecting multiple AP candidate positions with the highest statistical EH efficiency in each group to form a new AP candidate position set, so as to reduce the action dimension of a DDPG algorithm; and solving the AP deployment optimization problem based on the DDPG algorithm, wherein the action is designed as the selection state of the new AP candidate positions selected by the K-means algorithm. Results show that the proposed AP deployment method has great energy-saving advantages in the new energy empowerment non-cell large-scale MIMO scene with uneven traffic distribution.

The application provides a kind of energy storage power station grid regulation capacity evaluation analysis method and system, belongs to energy storage power station technical field, specifically includes: based on energy storage regulation strategy, determine the energy storage regulation power interval of super capacitor for energy storage regulation processing, and take it as matching power interval, based on the stability of energy storage regulation power of battery energy storage device in different remaining power interval and energy storage regulation data, determine the adaptive remaining power interval for regulation capacity evaluation analysis in matching power interval, use the adaptive remaining power interval data of different matching power interval, determine whether it is necessary to carry out the control processing of energy storage space of super capacitor, improve the efficiency of regulation capacity evaluation analysis processing of energy storage system.

The application relates to the technical field of electric energy storage, in particular to a battery management unit, method and system for an energy storage system, demand basis strings in demand basis collection instructions are analyzed based on demand basis collection instructions transmitted by an energy storage demand end; at least two target electric quantity sub-demand bases are found out from demand basis package information corresponding to the demand basis strings, wherein the demand basis package information corresponding to the demand basis strings comprises a plurality of different electric quantity sub-demand bases; sub-demand bases with the same battery discharge voltage in the at least two target electric quantity sub-demand bases are combined into a target demand basis, and battery energy storage is generated according to the target demand basis, so that the waiting time of demand personnel is reduced, and the problem of low battery energy storage efficiency is solved.

The computer-implemented method for identifying thermal runaway events in a battery module, where multiple battery modules collectively form a Battery Energy Storage System (BESS). The method includes receiving an acoustic signal from at least one acoustic sensor positioned within the BESS. A thermal runaway event is identified if there is a sudden increase in battery noise detected in the received acoustic signal.

The present application relates to a kind of intelligent garbage can, integrated for automatically opening cover infrared sensing technology, image recognition technology for garbage classification, garbage capacity detection device for monitoring capacity, with control power and manage battery Energy storage part, while equipped with processing and maintenance part, to realize automatic disinfection and anti-pinch hand, still installed communication and control part, data management part and function extension interface, to carry out data analysis, to identify rule, optimize compatibility and communication capability.Compared with prior art, the present application each function synergizes to improve efficiency, promote classification, intelligent management, increase safety, comprehensively optimize garbage disposal, can better adapt to different environments.

The application discloses a battery energy storage inverter, a power control method and a battery energy storage inverter system. The battery energy storage inverter comprises a direct-current side full-bridge circuit, three groups of alternating-current side half-bridge circuits, a multi-winding high-frequency transformer, a power transmission inductor and an alternating-current side filter inductor. The direct-current side full-bridge circuit and the three groups of alternating-current side half-bridge circuits are connected through the multi-winding high-frequency transformer and the power transmission inductor to complete bidirectional energy transmission between the direct-current side and the alternating-current side. The single-stage structure can realize electrical isolation and direct-current alternating-current conversion functions, without an intermediate direct-current bus, so that the power density and service life of the inverter are effectively improved. The number of alternating-current side power devices is small and bidirectional switches are not needed, so that the cost is reduced. When a fault occurs, all switches can be directly locked, and modulation is simple.

The utility model relates to the technical field of energy storage battery, and solves the problem that the installation of the battery energy storage device is limited by the height of the installation scene. The utility model provides a kind of battery energy storage device, it includes: multiple energy storage mechanisms, energy storage mechanism includes base and one or more stacked connection battery module being arranged on base, and energy storage quick connection structure is provided on base, and energy storage quick connection structure is connected in the battery module adjacent to base: connecting wire harness, its both ends are respectively provided with the wire harness quick connection structure matched with energy storage quick connection structure, and the wire harness quick connection structure of its both ends is respectively detachably connected to the energy storage quick connection structure of any two energy storage mechanisms, for transmitting the communication signal and electric energy between the two energy storage mechanisms connected by it. The utility model overcomes the above technical problems.

The utility model relates to battery energy storage device technical field especially a kind of sodium energy storage communication wire harness protection mechanism, including U-shaped protection groove, the surface of the U-shaped protection groove is sprayed with corrosion-resistant layer, the surface of the U-shaped protection groove is provided with U-shaped hole, the lower portion of U-shaped protection groove is provided with baffle, the surface of baffle is provided with wire harness outlet.The utility model can arrange wire harness in U-shaped protection groove, can provide physical protection for communication wire harness, prevent wire harness from being collided, extrusion mechanical damage by external object in container transportation and running process, guarantee the integrity of wire harness, prevent external environmental factors such as water, fire, corrosion from causing damage to cable or wire, ensure the normal use and safety of cable or wire, while cable or wire maintenance and replacement cost can be reduced, production efficiency and economic benefits can be improved, the aesthetic degree and durability of wire can be improved, so that it is safer, more reliable and durable.

This invention relates to the field of lithium-ion battery energy storage technology, specifically disclosing a fault diagnosis method and system for lithium-ion battery energy storage systems. Through a multi-level monitoring logic of cluster-module-cell, the fault range is quickly narrowed down before focusing on individual cell diagnosis, avoiding indiscriminate full-scale calculations and achieving accurate fault location and analysis for large-scale energy storage systems. Furthermore, through the collaborative calculation of spatial and temporal information entropy, real-time location of sudden faults and early warning of gradual faults are simultaneously achieved, effectively solving the problems of strong adaptability to single faults and weak collaborative diagnosis capabilities for multiple faults in existing technologies.

We disclose a decision-dependent, opportunity-constrained optimal model for improving the resilience of a power distribution system under renewable power generation uncertainty by strategically setting up and starting dispatchable diesel generators, renewable distributed power sources, battery energy storage systems, and switchable devices. A moment-based ambiguity set is used to represent the uncertainty arising from renewable distributed power sources by incorporating information on decision variables. By leveraging convex approximations to handle the considered joint opportunity constraints, the disclosed model is transformed into an easy-to-handle mixed-integer quadratic cone programming problem to be solved.

This invention belongs to the field of catalyst preparation and battery energy storage technology, and relates to a cobalt / molecular sieve catalyst. The preparation method of the cobalt / molecular sieve catalyst of this invention includes the following steps: S1: Dissolving the molecular sieve, then impregnating it in a cobalt-containing metal salt solution, sonicating, washing, and drying to obtain a precursor; S2: Grinding the precursor obtained in step S1, and calcining it at 300℃-600℃ for 2-5 hours under an inert gas atmosphere; subsequently, adding the calcined product and dopamine hydrochloride together to a citric acid buffer solution, sonicating, stirring, washing, and drying; S3: Grinding the dried product from step S2, and then using a high-temperature reduction process to confine the metallic cobalt through the pore structure of the molecular sieve, to obtain a molecular sieve-supported cobalt catalyst. This invention prepares a molecular sieve-supported cobalt catalyst and applies it to the membrane layer of a modified lithium-sulfur battery, resulting in excellent rate performance and stable cycle life for the lithium-sulfur battery.

This invention relates to the field of battery energy storage technology, and discloses a container system for preventing thermal runaway and a method for suppressing thermal runaway. The system includes a container shell, multiple battery packs installed inside, a pressure relief port, a smoke collection trough, and an explosion relief plate assembly. A flow channel is formed inside the battery pack to guide thermal runaway gas to the rear pressure relief port; the smoke collection trough collects the gas and discharges it directionally through the explosion relief plate. A U-shaped flow channel is formed inside the battery pack via a top cover and flow guide strips, and an explosion-proof valve and sealing structure are provided; the smoke collection trough consists of inner and outer sealing plates and baffles, employing a multi-slot independent design to achieve thermal isolation; the explosion relief plate assembly is driven by a spring-telescopic column mechanism for rapid opening. The system uses multi-sensor fusion judgment to simultaneously open the explosion relief plate and activate the fire suppression system upon confirmation of thermal runaway, allowing the extinguishing agent to be precisely injected into the faulty battery pack through the smoke collection trough. This invention achieves directional flow, isolated discharge, and rapid suppression of thermal runaway gas, effectively preventing heat spread and improving system safety.

The utility model relates to the technical field of electric power energy storage, especially a wide sword type sodium battery energy storage air cooling heat dissipation structure, including assembly bottom shell, the inner chamber fixed mounting of assembly bottom shell has wide sword battery group, the bottom fixedly connected with reinforcing rib board of assembly bottom shell inner chamber, the both sides of assembly bottom shell all movably install bottom shell side plate, the front side fixedly connected with battery tab of wide sword battery group, the front side movably installs encapsulation front plate of assembly bottom shell. The utility model can efficiently carry out heat dissipation treatment to equipment, when using, the heat dissipation fan carries out heat dissipation treatment in equipment, when radiating, EVA cotton strip still will carry out the air guiding to air, to this speed up the speed of equipment heat dissipation, simultaneously when using, the nozzle pipe still will deliver the cold gas in the connecting box to equipment, to this speed up the efficiency of equipment heat dissipation, and when using, the user also can drive the cleaning brush plate to clean the dust screen through the connecting plate, to prevent the dust accumulation.

This invention discloses a flywheel-battery hybrid energy storage method and system for suppressing grid power oscillations, relating to the field of power system stability control technology. It includes: acquiring the real-time rotor speed of the flywheel energy storage unit; generating a first power command based on the deviation from a preset rated speed; determining whether the real-time rotor speed is within a preset speed range; if it exceeds the limit, generating a second power command to control the battery energy storage unit to charge and discharge at a constant power; if it is within the range, generating a third power command based on the DC bus voltage deviation; and controlling the battery to execute the commands based on priority arbitration logic, with the second power command having higher priority than the third power command. This invention addresses the problems of existing centralized control architectures heavily relying on complex communication, experiencing response delays, and batteries suffering from shallow charging and discharging and rapidly declining lifespan due to frequent tracking of power oscillations.

The application discloses a BMS system electric quantity estimation and dynamic intelligent calibration method, and belongs to the technical field of battery energy storage. The method corrects the battery electric quantity SOC value calculated based on the ampere-hour method according to the electric characteristics of a battery factory and the dynamic temperature compensation value and the power compensation value of the battery product, and obtains the battery voltage and the electric quantity SOC performance curve of the battery product itself by the corresponding relationship between the battery voltage and the electric quantity SOC value. The corresponding relationship curve is divided into multiple voltage intervals according to the nonlinear characteristics of the curve, and the SOC value of each interval is set according to the battery voltage and the electric quantity SOC performance curve of the battery product when the battery product leaves the factory. The SOC value SOCi calculated in the charging and discharging process is compared with the set SOC value (Si+1), and the deviation coefficient Ki is obtained as an intelligent automatic correction parameter of the battery electric quantity SOC value, so that the electric quantity estimation deviation is effectively controlled, the accuracy of the SOC value is improved, the overcharging and overdischarging of the battery are avoided, and the operation life of the battery and the efficiency of the energy storage system are improved.

The application discloses a fire safety system and control method of a container type electrochemical cell energy storage power station. A control cabin and a plurality of battery cabins are arranged in a container cabinet. A battery plug-in box is arranged in each battery cabin. An electromagnetic release mechanism is arranged above the battery plug-in box, and an accumulator pool is arranged below the battery plug-in box. A water-based extinguishing agent filled accumulator plastic bag is arranged in the accumulator pool. A steel spike is arranged on the bottom surface of the battery plug-in box. According to the data of a multi-stage early warning monitoring unit, a non-fire-fighting power supply in a corresponding battery cabin is cut off, and the electromagnetic release mechanism is started, so that the battery plug-in box falls into the accumulator pool, the steel spike pierces the accumulator plastic bag, and full-immersion fire extinguishing is realized. The system can physically isolate a faulty battery, fundamentally block the spread of thermal runaway, and has the characteristics of rapid response and efficient fire extinguishing.

A method and system for performing blackstart functionality from renewable generation and battery energy storage systems are disclosed. A plant may include a microgrid that includes one or more customer loads and that may provide power to a utility grid. Blackstart may be performed to restore operations to part or all of the plant or to external loads such as microgrid customer loads or part of the utility grid. In practice, blackstart may be performed in order to restore operation to the one or more feeders in the plant, such as to the generation sources within the plant, to restore power to the plant auxiliary loads, customer loads in the microgrid, and to provide power to different sections of the grid when transitioning from shutdown mode of operation. In this way, the method and system may automatically transition from a shutdown mode of operation to an islanded mode of operation.

This invention provides a control method, apparatus, equipment, and system for a hybrid energy storage power station, relating to the field of energy storage control technology. The method includes: acquiring the grid connection point frequency between the hybrid energy storage power station and the power grid system; determining the required inertia support power and primary frequency regulation power of the power grid system based on the grid connection point frequency; determining the flywheel power of the flywheel energy storage device and the battery power of the battery energy storage device based on the inertia support power and the primary frequency regulation power, so as to control the operation of the flywheel energy storage device and the battery energy storage device; wherein, the flywheel power includes the inertia support power and a first frequency regulation power component dynamically allocated to the flywheel energy storage; the battery power includes a second frequency regulation power component dynamically allocated to the battery energy storage; the sum of the first and second frequency regulation power components is the primary frequency regulation power. This invention can accurately adapt to the support requirements of the power grid system, further improving frequency stability.

This invention relates to a battery pack balancing control method and system. The method includes: Step S1: treating the battery pack as an intelligent agent network and converting the battery pack balancing problem into a Markov game that can be handled by the DRL algorithm; Step S2: generating online expert data using the FCS-MPC algorithm; Step S3: training the intelligent agent network and a hybrid network based on different intelligent agent networks using the FCS-MPC-QMIX algorithm, and dynamically fusing the expert data into the objective functions of the intelligent agent network and the hybrid network during training to accelerate network convergence; Step S4: using the trained intelligent agent network and the hybrid network to achieve battery pack balancing control. This invention can provide balancing control for distributed battery energy storage systems.

An energy system comprising: a heating, ventilation, and / or air conditioning (HVAC) system including an HVAC branch loop having an HVAC regulated flow flowing in one or both directions; a battery energy storage system (ESS) including a battery pack having batteries configured for operating temperatures within a target temperature range, an ESS regulating loop having an ESS regulated flow, wherein the ESS regulating loop is thermally coupled to the battery pack, and the HVAC branch loop and the ESS regulating loop are fluidly isolated from each other; a heat exchanger, wherein the HVAC branch loop and the ESS regulating loop are thermally coupled to each other via the heat exchanger; and a controller configured to control the flow within the HVAC branch loop and the ESS regulating loop such that the battery pack operates within the target temperature range.

A power plant having a plurality of DC battery energy storage system (BESS) modules is disclosed, with each BESS module having a dually attached node (DAN); a plant controller; and a communication network. The communication network is linked between the plurality of BESS modules and the plant controller. The communication network includes a redundant local area network (LAN) arranged with a first LAN and a second LAN. The DAN of each of the plurality of BESS modules is in communication with the plant controller via the first LAN and via the second LAN. The communication network executes a parallel redundancy protocol (PRP) to effect communication between the plant controller and the plurality of BESS modules via the first and second LANs and the DAN.

This utility model discloses a self-lifting mobile battery energy storage device, relating to the field of mobile battery technology. It solves the problems of low practicality and poor performance of existing devices by adopting the following solution: a base is mounted on the bottom surface of the container, and a fixed shaft with a corresponding position is fixedly installed on the bottom surface of the base. This self-lifting mobile battery energy storage device, through the setting of a rotating sleeve and a hydraulic telescopic cylinder, rotates the rotating sleeve 90 degrees, thereby extending the connecting rod and connecting seat, increasing the distance between the hydraulic telescopic cylinder and the container. Then, the hydraulic telescopic cylinder drives the piston rod and the base plate to move downwards, thereby lifting the container. The structural design is reasonable and improves practicality. Simultaneously, through the setting of insertion hole A, positioning hole, and insertion rod, the insertion rod can be inserted into the positioning hole through insertion hole A or insertion hole B, allowing the rotating sleeve to be locked in different positions, ensuring its stability and safety during use, and improving the device's performance.

The present application relates to the technical field of deformed battery energy storage devices, and relates to a preparation method of an impact-resistant compression battery electrode with a negative Poisson's ratio structure, in which lithium ion battery electrode active materials, a conductive agent, a binder and a solvent are mixed in a certain mass ratio to prepare electrode ink, the ink is injected into a mold with a negative Poisson's ratio structure made by a 3D printer, and directional freezing is performed on a copper plate immersed in liquid nitrogen.After post-processing such as freeze-drying, a multi-scale electrode with a directional pore structure on a microscale and a macroscopic negative Poisson's ratio structure is finally obtained.The multi-scale biomimetic structure electrode has excellent compressibility and can achieve 50% compression.The electrode also has high specific capacity, good cycle stability and rate performance.The method for preparing a deformed electrode by directional freezing assisted by a mold has low cost, simple operation, wide application range and great application potential.

The application discloses a compressed carbon dioxide energy storage system coupled with a battery energy storage system and a method thereof, which comprises a compressed carbon dioxide energy storage module, a battery energy storage module, and a power grid and a power generation device connected to the compressed carbon dioxide energy storage module and the battery energy storage module in parallel. The compressed carbon dioxide energy storage module comprises a low-pressure carbon dioxide storage tank and a high-pressure carbon dioxide storage tank. The outlet of the low-pressure carbon dioxide storage tank is connected to the inlet of the high-pressure carbon dioxide storage tank through a first throttling valve and a compressor. The outlet of the high-pressure carbon dioxide storage tank is connected to the inlet of the low-pressure carbon dioxide storage tank through a second throttling valve and an expander. The battery energy storage module is connected to the power grid and the power generation device in parallel to store and release energy. The application couples the battery energy storage system to the compressed carbon dioxide energy storage system, uses the non-power-limited characteristics of the battery energy storage system to reduce the phenomenon of abandoned wind and abandoned light, and uses the short reaction time of the battery energy storage to smooth the transition, thereby effectively avoiding the disadvantage of slow reaction of the large-scale compressed energy storage system.