1325 results about "Battery energy" patented technology

The invention relates to the technical field of battery management, and discloses a battery energy balanced distribution and optimization method, device and equipment and a storage medium. The method comprises the following steps: performing multi-source parameter acquisition and feature decoupling on each single battery in a target battery pack to obtain a single battery state data set, and performing multi-band excitation scanning and impedance spectrum fitting to obtain internal features of the battery and decompose an attenuation trend to generate equivalent circuit model parameters; performing state mapping and capacity calculation based on the model parameters to obtain a performance evaluation result of the battery pack, and constructing an energy transfer network and identifying unbalanced propagation characteristics through performance difference analysis and consistency calculation; and temperature coupling calculation and compensation matrix reconstruction are carried out based on propagation characteristics, multi-path parallel balance control is realized, and an optimization result of the battery pack is obtained through voltage deviation calculation and polarization compensation. According to the method, the multi-dimensional characteristic parameters and the dynamic change characteristics are combined, and accurate control over battery pack equalization is achieved.

The invention relates to the technical field of SOC estimation, in particular to an SOC estimation method and system for a lithium battery pack. The method comprises the following steps: collecting basic parameters and voltage data of a lithium battery pack, generating steady-state voltage data by using singular value decomposition and time domain reconstruction, further performing multi-level feature mapping and performance reconstruction to obtain basic discharge data, calculating battery energy efficiency and deducing normal power consumption based on the data, and calculating the energy efficiency of the lithium battery pack. Discharging simulation is carried out to evaluate the temperature rise condition, discharging capacity attenuation is predicted in combination with working environment parameters, relative errors are calculated, finally, the charge state is corrected, electric quantity self-calibration is carried out, and intelligent state estimation of the lithium battery pack is achieved. According to the invention, a more efficient SOC estimation method is realized.

The invention relates to the technical field of fire-fighting management, and discloses an intelligent fire-fighting service management system, which comprises a data acquisition unit used for acquiring three basic parameters, namely environment data, working condition data and battery data, of a fire-fighting object in an office building, and the system acquires the environment, working condition and battery data of a fire extinguisher through the data acquisition unit; the fusion unit generates a dynamic composite abnormal threshold value, and the adjustment unit executes a three-stage sampling frequency adjustment mechanism according to the threshold value, the battery health degree score and the data deviation degree, which means that the sampling frequency can be reduced to reduce the battery energy consumption when the state of the fire extinguisher is normal and the risk is relatively low, and when the risk is increased or the battery health degree is reduced, the battery energy consumption is reduced. The whole system realizes accurate management and regulation of the battery according to the actual working condition of the fire extinguisher, energy waste is avoided, the service life of the battery is prolonged, the cost of frequently replacing the battery is reduced, and the sustainability of intelligent fire control management is enhanced.

The invention relates to the field of power battery energy management, in particular to a power battery pack charging and discharging efficiency dynamic optimization system and method, and the system comprises a central control unit, a multi-dimensional sensing module, a dynamic charging and discharging control module, a working condition-heat dissipation cooperation module, a parallel cell equalization module and an aging adaptation optimization module. The multi-dimensional sensing module is used for collecting basic parameters, polarization characteristics, parallel state, aging degree and environmental parameters of a battery pack, the dynamic charging and discharging control module is used for collecting data, the working condition-heat dissipation coordination module adopts a three-stage heat dissipation framework, and the parallel battery cell balancing module is used for balancing the battery pack through a dynamic current distribution and voltage active balancing double-coordination mechanism. The aging adaptation optimization module is used for grading and differentially optimizing charge and discharge parameters and heat dissipation strategies based on the aging degree of the battery cell, so that the problems of low charge and discharge efficiency, poor wide temperature range adaptability, weak parallel consistency, fast aging attenuation and multi-factor coupling deterioration of the power battery pack are solved.

The invention discloses a hydrogen cooling superconductive flywheel composite energy storage system, which relates to the technical field of new energy storage and comprises a superconductive flywheel energy storage module, a lithium battery energy storage module, a power conversion module, an intelligent control module, a cooling sub-module and a hydrogen energy recovery module, by combining the quick response characteristic of the superconducting flywheel and the high energy density of the lithium battery, the superconducting flywheel can realize quick energy storage and release by utilizing the friction-free characteristic of the superconducting flywheel, a cooling sub-module and a hydrogen energy recovery module are used, the cooling requirement of the superconducting flywheel is ensured, and meanwhile, energy recovery can be carried out; by utilizing the characteristic of high energy density of the hydrogen battery, the energy storage capacity of the composite energy storage system is further improved, and the limitation of a single energy storage technology on power density and energy density can be effectively solved through the hybrid energy storage system; and more reliable and efficient energy storage support is provided for the fields of power grid peak regulation, renewable energy source grid connection, electric automobiles and the like.

The invention relates to a temperature control method, device and equipment for a new energy automobile air conditioner and a medium, and the method comprises the steps that the environment temperature in an automobile and heater surface temperature data are collected in real time through multiple sensors, a preliminary adjusting instruction is generated in combination with the temperature preset by a user, and a power distribution strategy is dynamically optimized based on battery residual current; a duty ratio adjusting technology is adopted to carry out power control on a heater power supply circuit, overload risk grading response is realized through a grading safety threshold detection mechanism, a closed-loop feedback mechanism is further introduced, and control parameters are dynamically optimized according to real-time temperature feedback and a battery health state. And the problems of large temperature deviation of multiple regions and unbalanced battery energy consumption are solved. Through temperature-current-battery multi-dimensional fusion control, hierarchical dynamic protection and an energy consumption equalization algorithm, the driving comfort is guaranteed, meanwhile, the overload risk of the system is effectively reduced, the service life of the battery is prolonged, and the method is suitable for the intelligent safety temperature control scene of the new energy automobile air conditioner.

A battery pack according to an embodiment of the present disclosure includes: a plurality of battery modules; a tray including a mount plate on which the plurality of battery modules are seated, a front frame provided on an end portion in a longitudinal direction of the mount plate, and a rear frame provided on the other end portion in the longitudinal direction of the mount plate; a pair of side covers covering both end portions in a width direction of the tray; at least one module partition wall parallel to the front frame and the rear frame, and located between adjacent battery modules; and a battery energy management system (BEM) assembly including a BEM bracket having one end portion fastened to the at least one module partition wall and the other end portion fastened to the rear frame, and a BEM mounted on the BEM bracket.

The invention discloses an electric vehicle charging power aggregation distributed regulation and control method, and relates to the technical field of AC charging pile charging power regulation and control, and the method specifically comprises the following steps: carrying out the cleaning and stabilization processing of power load and new energy data, employing an ARIMA model to predict the load, and employing an LSTM-Transform model to predict the new energy generation power; the upper layer aggregates the total state of the charging station, including the electricity price, the load, the total vehicle energy, the total docking power of the lower-layer single vehicle model and the battery demand; based on an MCTS enhanced DDPG algorithm, the total charging power is optimized through cost discount rewards and energy penalty; an improved ADMM algorithm distributes total power to each pile, and battery stress and heat loss are minimized; and comparing the actual battery energy with the virtual battery energy, and updating the data and re-deciding when the energy is inconsistent. According to the invention, three industry bottlenecks of poor real-time response of electric vehicle charging, slow large-scale scheduling and difficulty in consideration of economy and battery health are overcome, and power grid dynamic response acceleration, decision-making efficiency jump and comprehensive benefit breakthrough are realized.

The invention provides a light storage coordinated feed-in new energy microgrid power quality improving device and method, and relates to the technical field of microgrid distributed control. The light storage coordinated feed-in new energy microgrid power quality improving device comprises a series converter, a parallel converter, a battery energy management system and a direct current power supply unit. According to the optical storage coordinated feed-in new energy microgrid power quality improvement method, a prediction equation is established for a series converter to decouple a control target, and power grid current can be accurately compensated. An adaptive compensation control technique based on a VLLMS algorithm is employed for the parallel converter to generate a control signal for the parallel converter. A virtual inertia control strategy is provided for a battery energy management system, and inertia support is provided for a series converter and a parallel converter. And aiming at a non-ideal voltage condition, constructing a PB-SM compensation strategy of the new energy micro-grid power quality improving device based on optical storage coordinated feed-in.

The invention provides a current collector, a pole piece, a secondary battery, an electric device, a copper foil and a preparation method of the copper foil. The current collector comprises a copper foil, the average particle size of crystal grains in the copper foil is 50-400 nm, and based on the total number of the crystal grains in the copper foil, the number ratio of the crystal grains of the nano twin crystals is larger than or equal to 60%. Under the combined action of the high-proportion nano twin crystal structure and the small grain size, the mechanical strength of the current collector is improved while the high plasticity of the current collector is maintained, and a material basis is provided for further improvement of the energy density and the safety of the battery.

A battery state-of-energy health assessment method and apparatus, and an electronic device and a readable storage medium. The method comprises: acquiring state-of-energy health data, wherein the state-of-energy health data is the ratio of dischargeable energy of a battery under fixed C-rate operating conditions at different states of aging to dischargeable energy of the battery under the same C-rate operating conditions at an initial stage of the battery (S101); acquiring charging energy of the battery of a target vehicle at different temperatures, and acquiring the ratio of the charging energy to theoretical charging energy (S102); and using a preset algorithm to assess the state-of-energy health data and the ratio of the charging energy to the theoretical charging energy, in order to obtain an assessment result (S103). In the method, acquiring battery state-of-energy health data and the ratio of charging energy to theoretical charging energy achieves comprehensive assessment of battery state-of-energy health from two perspectives, so as to more rationally estimate the residual driving range of electric vehicles, thereby achieving more accurate estimation results.

The invention relates to the technical field of battery energy management, in particular to an energy management system and method for a hydrogen fuel cell module, and the system comprises a monitoring collection module which collects and contrasts the readings of a sensor based on the voltage parameter, the current parameter and the temperature parameter of the hydrogen fuel cell module to obtain original monitoring data, and performing numerical comparison on the load demand of the power distribution network to generate supply and demand matching information. In the invention, the difference statistics and the difference operation improve the accuracy of energy distribution, so that the matching between the energy distribution and the actual load demand is more accurate, and the overall energy efficiency is improved while the energy waste is reduced. And frequency band extraction and rate recording can capture subtle changes output by the battery, and the response speed is increased. In addition, the analysis and adjustment of the phase feature group provide adaptive ability, and the stability and reliability of the load change of the power grid are enhanced.

The invention relates to the field of batteries, in particular to a negative plate and a battery comprising the negative plate. The negative plate comprises a negative current collector, a bottom coating and a negative active material layer, the bottom coating and the negative active material layer are positioned on one side or two sides of the negative current collector, the bottom coating is positioned between the negative current collector and the negative active material layer, the bottom coating comprises a three-dimensional structure formed by a first conductive binder, the first conductive binder comprises a first carbon nano tube, and the first carbon nano tube comprises a second carbon nano tube. The negative plate meets the following relational expression: 1.2 < = B / K < = 3.4, B is the length-diameter ratio of the first carbon nanotube, and K is the tensile strength of the negative current collector. According to the negative plate, the thickness of the priming coat can be greatly reduced, and the energy density of the battery is increased; the binding power between the negative electrode current collector and the negative electrode active material layer can be enhanced, the structural stability of the active material layer can be improved, the pole piece deformation and powder falling in pole piece processing and battery circulation can be improved, and the circulation expansion can be inhibited; the conductivity of the pole piece is improved and the fast charging performance of the battery is improved.

The invention relates to the technical field of solid-state battery energy conversion, and discloses a high-safety sodium-ion battery energy conversion method based on a solid-state electrolyte, which comprises the following steps: identifying an interface dynamic mismatch risk time period in a charging and discharging process, and applying micro-amplitude high-frequency acoustic vibration disturbance to a solid-state electrolyte and a sodium negative electrode interface in the time period, sodium ion microscopic distribution is regulated and controlled through the acoustic streaming effect, contact stress is dredged, dendritic crystal early nucleation is inhibited, dynamic reconstruction and optimization of the interface state are achieved, the solid-state sodium-electricity interface is converted into dynamic self-adaption from static mismatch, the ion transmission uniformity is actively maintained through the acoustic streaming effect, and dynamic reconstruction and optimization of the interface state are achieved. And meanwhile, real-time sensing of an interface state and dynamic adjustment of acoustic vibration parameters are realized in combination with an acoustic probing mechanism, so that the interface stability and dendritic crystal inhibition capability are effectively improved, and the energy conversion efficiency and the safety performance of the battery are remarkably enhanced.

The invention discloses a negative plate and a preparation method thereof, a battery and electric equipment. The negative plate comprises a current collector, a first coating and a second coating. Wherein the first coating and the second coating comprise active substances, the D50 particle size of the active substance of the first coating is greater than the D50 particle size of the active substance of the second coating, the D50 particle size of the active substance of the first coating is 5-12 [mu] m, and the D50 particle size of the active substance of the second coating is 1-7 [mu] m. According to the negative plate provided by the invention, the compaction density of the negative plate is improved, the energy density of the battery is improved, contact sites between active substances and between the active substances and the current collector are increased, and the hierarchical charge-discharge rate performance of the battery is improved. And meanwhile, the second coating is arranged on one side of the contact diaphragm, so that the short circuit condition caused by the morphology hardness of an active substance of the second coating can be effectively reduced, the process yield is improved, and the service life of the battery is prolonged.

The invention relates to an in-situ cured silicon-based composite negative pole piece as well as a preparation method and application thereof. The silicon-based composite negative pole piece comprises a negative pole piece and a polymer electrolyte layer which is cured in situ and coats the surface of the negative pole piece; the polymer electrolyte layer is obtained through in-situ polymerization reaction of a precursor solution applied to the surface of the negative pole piece; the precursor solution contains a fluoroalkyl functional group; and the negative pole piece comprises a silicon-based material of which the surface is rich in hydroxyl. The composite negative pole piece disclosed by the invention not only can effectively limit the volume expansion of a silicon negative pole in a circulation process and reduce the phenomena of particle pulverization and interface separation, but also remarkably enhances the adhesive force among active substance particles, and ensures the structural integrity of the pole piece and the efficient transmission of ions and electrons. The silicon-based negative pole piece can form a stable solid-solid interface with the solid electrolyte through the polymer coating layer, so that the interface impedance is remarkably reduced, and the ion conduction efficiency is improved, thereby enhancing the cycling stability and safety performance of the battery while improving the energy density of the battery.

The invention relates to the technical field of new energy, and discloses a battery and a battery pack. A pole; the laminated battery cell comprises a battery cell body and a tab extending from one end of the battery cell body along the first direction; the pole lugs are electrically connected with the pole columns; the tabs comprise a positive tab and a negative tab, and the positive tab and the negative tab are both located at the same end of the battery cell body in the first direction; the positive electrode lug and the negative electrode lug are arranged at an interval along a second direction, and the second direction is perpendicular to the first direction; the spacing distance between the positive pole lug and the negative pole lug along the second direction is a1, the width of the laminated battery cell along the second direction is a2, a = a1 / a2, the length of the battery cell body along the first direction is b, and b.a is more than or equal to 8mm and less than or equal to 350mm. According to the battery provided by the invention, the over-large b.a easily causes the increase of the over-current demand of the battery cell and the reduction of the area of the welding region. And too small battery energy density is low.

The invention relates to the technical field of electric scooters, in particular to a vehicle battery energy-saving control system of a high-strength impact-resistant scooter, which comprises an impact-resistant battery bin, a battery energy-saving control system and a battery energy-saving control system, wherein the impact-resistant battery bin comprises a multi-layer composite shell, a vibration sensor and a filling layer; the energy-saving control module comprises an intelligent detection unit, a central controller and a power optimizer; the power optimizer is used for adjusting the PWM duty ratio of the motor driving circuit according to the power mapping table; the energy recovery module is used for receiving brake force, a slope angle, a motor rotating speed and a vehicle mass estimation value, calculating an optimal recovery current through a Kalman filter, and injecting the recovery current into a battery pack by adopting a bidirectional Buck-Boost circuit; and the safety cooperative controller executes a hierarchical protection strategy, and a data bus is connected with each module to realize data interaction. Therefore, the problems that in the prior art, an electric scooter is insufficient in battery endurance, low in energy recovery efficiency, weak in impact resistance, poor in collaboration and the like are solved.

The invention belongs to the technical field of battery material preparation, and particularly relates to a coated negative electrode material as well as a preparation method and application thereof. The coated negative electrode material comprises a porous carbon skeleton and a carbon coating layer coating the porous carbon skeleton, the porous carbon skeleton is provided with a plurality of holes; a silicon layer and a functional layer are attached to the surfaces of part of the holes; the silicon layer comprises silicon, the functional layer comprises a functional material, and the functional material comprises lithium aluminum fluoride. The coated negative electrode material provided by the invention has the properties of low expansion, high lithium ion conduction, few byproducts and the like, and is suitable for a solid battery; the battery energy density is ensured, and the problems that an effective lithium ion path cannot be formed due to contact failure of an active substance caused by high volume expansion of a silicon-based material in the circulation process and contact failure of the active material and a solid electrolyte in a solid-state battery, and performance degradation is caused by negative electrode side polarization increase in the circulation process are solved.

The invention provides an electric ship battery energy consumption prediction method and device. The method comprises the following steps: acquiring a standard data set for training a model; constructing an initial prediction model based on the echo state network; training the initial prediction model based on a particle swarm algorithm and a standard data set to obtain a trained battery energy consumption prediction model; deploying the hardware sensor and the battery energy consumption prediction model to a to-be-predicted electric ship; acquiring real-time ship data through a hardware sensor; and performing energy consumption prediction according to the real-time ship data and the battery energy consumption prediction model to obtain an energy consumption prediction result. According to the method and the device, the endurance prediction precision of the electric ship can be improved, the method and the device can adapt to variable navigation environments and complex operation conditions, energy management optimization is facilitated, and environment-friendly navigation is assisted.

The invention discloses a battery and a power utilization device, the battery comprises a battery cell and an electrolyte, the battery cell comprises a negative plate and a diaphragm, the negative plate comprises a current collector and a negative active material layer, the negative active material layer comprises a silicon-based material, and the diaphragm comprises a base film and a coating; the mass percent of the silicon element in the negative electrode active material layer is a; the viscosity of the electrolyte is b, and the unit is cp; the percentage of the thickness of the coating to the thickness of the diaphragm is c; 0.037 < = a * b / c < = 5.625. By controlling the value of a * b / c within the range of 0.037-5.625, the infiltration effect of the electrolyte on the negative electrode and the fast charging performance of the battery can be effectively improved under the condition of ensuring the energy density of the battery.

The invention provides a distributed power battery energy transaction and scheduling method and system for a smart power grid, and relates to the technical field of smart power grids, and the method comprises the steps: collecting load distribution data and battery state information, and dividing transaction groups; the method comprises the following steps: constructing a federated learning network, calculating a credit evaluation score, setting a differentiated transaction quota, constructing a time-space association diagram, outputting an optimal transaction price interval, generating a transaction matching strategy, optimally calculating a charging and discharging scheduling instruction and executing transaction settlement, so that efficient transaction and scheduling of power battery energy are realized, and the operation efficiency of a power grid is improved; and the scheduling cost is reduced.

The invention relates to the technical field of lithium battery energy-saving management, and discloses an energy-saving management method and device for a lithium battery. The method comprises the following steps: acquiring real-time dynamic data, temperature data and battery fixed parameters of a lithium battery, calculating battery power consumption through a temperature correction calculation model, and correcting the power consumption through a power consumption dynamic correction model; energy consumption parameters, energy efficiency and optimal power consumption are calculated through an energy consumption model and an energy efficiency model, and optimal energy consumption parameters and optimal energy efficiency are screened out; and calculating the optimized internal temperature and surface temperature according to the heat production model and Kalman filtering, generating a temperature adjustment instruction by combining the internal temperature difference and the surface temperature difference, and finally outputting an energy-saving target. The method has the following effects: multi-factor dynamic change can be comprehensively considered, accurate optimization of battery energy efficiency and temperature control is realized, energy consumption is effectively reduced, the service life of the battery is prolonged, and operation stability and safety under complex working conditions are improved.

The invention provides a sulfur positive electrode, a lithium-sulfur battery and a preparation method of the lithium-sulfur battery. The sulfur positive electrode comprises a sulfur positive electrode membrane and an active lithium membrane covering the sulfur positive electrode membrane, the sulfur positive electrode membrane comprises active sulfur, a carbonaceous carrier framework and a solid electrolyte, and the mass ratio of the active sulfur to the carbonaceous carrier framework to the solid electrolyte is (5-35): (10-20): (55-75); the mass of the active lithium is 10-45% of the mass of the active sulfur, the active sulfur is adsorbed on the surface of the carbonaceous carrier framework, and the solid electrolyte is filled between the carbonaceous carrier frameworks adsorbed with the active sulfur. The lithium-sulfur battery comprises the sulfur positive electrode and a lithium-free negative electrode, active lithium and active sulfur react to form Li2Sx, and x is smaller than or equal to 4. According to the all-solid-state lithium-sulfur battery disclosed by the invention, potential safety hazards caused by using a metal lithium negative electrode are avoided; in addition, the active sulfur is cured in the all-solid-state electrolyte, so that the problem of sulfur shuttling is avoided; according to the all-solid-state lithium-sulfur battery, the solid electrolyte is used, a conventional liquid electrolyte is not used, and the battery is safe, reliable and high in energy density.

The invention provides a positive pole piece, a secondary battery and an electronic device. The positive pole piece comprises a positive current collector, a positive material layer and an insulating layer, and the positive material layer and the insulating layer are located on at least one surface of the positive current collector; the positive electrode current collector comprises a main body part and an epitaxial part which are connected with each other, the positive electrode material layer comprises a first positive electrode material layer and a second positive electrode material layer, and the insulating layer comprises a first insulating layer and a second insulating layer; the positive electrode material layer and the first insulating layer are arranged on the main body part; along the thickness direction of the positive pole piece, the first insulating layer is positioned between the second positive pole material layer and the positive pole current collector; the epitaxial part comprises a connecting region and a tab region, and the second insulating layer is arranged in the connecting region; the thickness of the first insulating layer is e [mu] m, the thickness of the second insulating layer is g [mu] m, and 1 < = e < g < = 30. By adopting the positive pole piece disclosed by the invention, the safety performance of the secondary battery can be improved, and the energy density of the secondary battery is considered.

The invention provides a vehicle energy management method, a storage medium and a vehicle, and belongs to the technical field of vehicles. According to the embodiment of the invention, by comprehensively considering the plurality of battery parameters of the battery, the current residual electric quantity precision of the battery can be accurately identified, the appropriate target correction amount can be determined for the battery based on the current residual electric quantity precision, and the initial residual electric quantity threshold value is dynamically corrected based on the target correction amount to obtain the target residual electric quantity threshold value. On the basis of the target residual electric quantity threshold value, energy management can be performed on the battery more finely. Therefore, the battery energy can be used as much as possible on the premise of ensuring the use safety of the battery, so that the full utilization of the battery energy is realized, and the endurance mileage of the vehicle is effectively improved.

The invention belongs to the technical field of batteries, and particularly discloses a secondary battery, a battery pack and an electric device. A negative electrode film layer of the secondary battery contains an additive; the additive comprises a carboxymethyl cellulose compound and a modified compound thereof; the compound is beneficial to improving the ionic conductivity of alkali metal ions and reducing the diffusion polarization phenomenon, so that the internal resistance of the battery is reduced. And the content of the additive in the negative electrode film layer close to the current collector is controlled to be higher than the content of the additive in the negative electrode film layer far away from the current collector, so that the technical effects of reducing the internal resistance of the battery, controlling the cost and reducing the influence on the energy density of the battery are achieved.

An apparatus provides information on a distance to empty (DTE) of a vehicle and an information providing method is performed thereby. The apparatus includes a display device configured to display DTE information of a vehicle and a controller configured to control operation of the display device. The controller determines low fuel efficiency-related information and high fuel efficiency-related information based on a current vehicle driving condition. The controller determines a low DTE value and a high DTE value based on the low fuel efficiency-related information, the high fuel efficiency-related information, and a current available battery energy. The controller also determines a current DTE value indicating a real-time DTE and controls operation of the display device to display the low DTE value, the high DTE value, and the current DTE value.

The invention discloses a functionalized carbon quantum dot modified all-vanadium redox flow battery electrolyte. The functionalized carbon quantum dot has a large specific surface area and a carboxyl functional group on the surface; the electrolyte of the flow battery is a dilute sulfuric acid solution of vanadium; the main evaluation indexes of the electrochemical performance are the cycle efficiency, the capacity retention ratio and the battery performance of the electrolyte; the invention aims to discuss the catalytic action of the surface functional groups of the functionalized carbon quantum dots on the oxidation-reduction reaction of vanadium ions in the electrolyte of the all-vanadium redox flow battery by using the functionalized carbon quantum dots as an additive of the electrolyte. Meanwhile, the influence of the concentration and doping of the carbon quantum dots on the electrochemical performance of the electrolyte of the all-vanadium redox flow battery is researched, so that the working efficiency and the overall performance of the battery are improved, the characteristics of the electrolyte are improved, and the energy consumption of the battery is reduced.

The invention discloses an energy management method and device for a trailer, a storage medium and a program product, and the method comprises the steps: dividing any historical route through which the trailer travels, and obtaining sub-road sections of the historical route; determining the optimal motor power of each sub-road section according to the historical driving parameters corresponding to the sub-road sections of the historical route; according to the optimal motor power of each sub-road section and the fixed energy requirement of the trailer, different battery electric quantities corresponding to the optimal motor power in the historical route are calculated, and the corresponding relation between the optimal motor power and the battery electric quantities serves as an energy management strategy of the historical route; wherein when the driving route of the trailer is the historical route, the energy output of a battery in the trailer is controlled according to the energy management strategy corresponding to the historical route. According to the technical scheme, the technical effects that energy management is conducted on the battery of the trailer, and the energy of the battery is reasonably distributed are achieved.