968 results about "Battery energy" patented technology

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.

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 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 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 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 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.

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.

The invention discloses a lithium battery energy state estimation method and system based on multi-strategy weighted fusion. The method comprises the steps that voltage, current, temperature and energy state data of a lithium ion battery in the charging and discharging process are collected; decomposing the voltage data by using a robust empirical mode decomposition technology, and screening out features of voltage, current, temperature and temperature with high correlation with an energy state by using a recursive feature elimination method RFE; dividing the training set into three training subsets; a time sequence dense encoder TiDE is used as a prediction model; the hyper-parameters of the TiDE model are optimized through an aurora optimization algorithm PLO, and the energy state of the lithium battery is predicted; a final energy state estimation result is obtained by combining a self-adaptive weighted fusion method with the generated prediction result; according to the method, multiple estimation is performed on the battery energy state from different working conditions and temperature conditions, and the reliability and accuracy of a prediction result are remarkably improved.

The invention discloses a Ga2O3 heterojunction beta irradiation battery with a multi-groove radioactive source, relates to the technical field of microelectronics, and solves the problems of low energy utilization rate and low energy conversion efficiency of a Ga2O3 nuclear battery radioactive source in the prior art. The battery comprises a filling type multi-groove radioactive source; the Ga2O3 heterojunction diode unit sequentially comprises a P-type ohmic contact electrode, a P-type NiO ion implantation region, an N-type Ga2O3 low-doped epitaxial layer, an N-type Ga2O3 high-doped substrate and an N-type ohmic contact electrode from top to bottom; a multi-T-type radioactive isotope source layer in the filling type multi-groove radioactive source is arranged above the P-type NiO ion implantation region and forms radiation energy coupling with the Ga2O3 heterojunction diode unit; the groove type structure is filled with the radioactive source, the energy deposition of the radioactive source entering the semiconductor conversion device is greatly increased, and the energy conversion efficiency of the Ga2O3 beta irradiation battery is improved.

The invention discloses an optimal scheduling method and system for battery energy of an unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicle energy management, and the method comprises the steps: collecting the state data of a battery module in real time, calculating the dynamic health factor of the battery module, analyzing the energy consumption supply-demand difference value of a whole flight segment through combining with a flight mission profile, and generating a space-time risk coefficient; calculating the load transfer priority of each module according to the risk coefficient and a preset strategy, dynamically distributing the discharge weight according to the load transfer priority, synchronously increasing the load of the high-priority module, and limiting the current of the low-priority module; and finally, continuously monitoring the voltage and the temperature difference, and recalculating the priority and the weight once the voltage and the temperature difference exceed the threshold until the system recovers to be stable. The cruising efficiency of the unmanned aerial vehicle cluster is remarkably improved, and the task interruption rate is reduced.

The invention discloses a battery pack energy one-time transfer method and device, relates to the technical field of energy storage, and is used for solving the problem of unbalanced energy of each single battery in a series battery pack. The device comprises a series battery pack, a central controller, a multi-way switch A, a multi-way switch B, a current sensor, an SOC detection module, a topology main circuit and a redundant battery pack. According to the method, a capacity efficiency equation is used for correcting an energy state calculation error caused by charge and discharge rate change of a single battery, and a charge and discharge energy model and a transfer current matrix are established in combination with internal loss of the battery. According to the method, each battery can reach the charge-discharge cut-off voltage at the same time in the same charge-discharge period. When the central controller detects that the battery energy is unbalanced through the SOC detection module, the battery needing energy transfer is selected through the multi-way switch A and the multi-way switch B, and energy transfer is conducted through the main circuit and the redundant battery. According to the invention, each battery can only carry out one-time energy transfer in the charging and discharging process, and compared with a traditional battery pack active equalization method, the dynamic loss in the equalization process is reduced, and the damage of repeated charging and discharging to the service life of the battery is reduced.

An illustrative system includes a location sensor configured to sense location of an electric vehicle and to generate a signal indicative of an electric vehicle's location. An electric vehicle battery cooling system is configured to provide cooling to an electric vehicle's battery. A controller is electrically couplable to receive the signal indicative of an electric vehicle's location from the location sensor and is configured to determine battery energy for the electric vehicle to reach a location of a charging station. The battery energy is based on the location of the electric vehicle and an amount of electrical energy remaining in the electric battery. The controller is configured to initiate cooling of the electric battery based on the amount of electrical energy remaining in the electric battery and the battery energy for the electric vehicle to reach the location of the charging station.

The invention discloses a battery energy efficiency control method and device, equipment, a medium and a product. The method comprises the following steps: acquiring first energy efficiency of a battery; under the condition that the first energy efficiency is smaller than an energy efficiency threshold value, target working condition parameters needed by the battery for achieving the target energy efficiency are determined, and the target working condition parameters comprise at least one of the target temperature and the target discharge depth interval; and adjusting the working condition parameter of the battery into the target working condition parameter, so that the energy efficiency of the battery is greater than or equal to the energy efficiency threshold. In this way, the energy efficiency of the battery can be automatically adjusted, and the energy efficiency of the battery is maintained within the range larger than or equal to the energy efficiency threshold value.

The invention provides a sulfinate organic positive alkali metal ion supplement for a secondary battery, and relates to the technical field of secondary batteries. The organic positive electrode alkali metal ion supplement has a structure as shown in the following general formula: [R-SO2]-M < + >, wherein M < + > is a metal cation and is selected from at least one of Li < + >, Na < + > and K < + >; [R-SO2]-is a sulfinate anion, and wherein R is an organic group. The supplement compensates irreversible capacity loss by efficiently releasing active ions, so that the energy density of the battery is improved; the oxidation potential is proper, the environmental stability is excellent, and the catalyst is not needed to decompose and easy to process; decomposition products are harmless, an electrode interface can be optimized, and the cycle life of the battery is remarkably prolonged.

The utility model relates to the technical field of power batteries, in particular to a composite diaphragm for a lithium battery, the lithium battery comprises a first pole piece and a second pole piece, the composite diaphragm is arranged between the first pole piece and the second pole piece, and the composite diaphragm for the lithium battery comprises a base diaphragm layer, a first lithium supplementing structure and a second lithium supplementing structure, the first lithium supplementing structure is arranged on the first side of the base film layer and located between the base film layer and the first pole piece, the second lithium supplementing structure is arranged on the second side of the base film layer and located between the base film layer and the second pole piece, and the first lithium supplementing structure comprises a ceramic layer, a first lithium supplementing layer and a conductive layer which are sequentially stacked from the base film layer to the first pole piece; and the second lithium supplementing structure comprises a ceramic layer, a second lithium supplementing layer and a conductive layer which are sequentially stacked from the base membrane layer to the second pole piece. The composite diaphragm for the lithium battery can realize accurate lithium supplementing, improve the first coulombic efficiency and improve the energy density of the battery.

The invention discloses a new energy automobile endurance mileage increasing system and method based on multi-mode energy collaborative management. The system comprises a multi-mode energy input module which is used for converting solar energy into direct current electric energy through a photovoltaic array and integrating power battery energy and hub motor kinetic energy recovery energy; the predictive management module is used for acquiring front road condition information through a V2X technology and predicting an energy consumption curve based on a deep learning model; the dynamic weight distribution module is used for calculating photovoltaic, battery and kinetic energy recovery weight coefficients through a dynamic weight distribution algorithm according to the real-time vehicle environment information and the prediction result; and the energy distribution control module is used for carrying out weighted distribution on the multi-modal energy based on the weight coefficient and outputting total available energy and a control signal so as to drive electric equipment or charge a battery. According to the invention, the problem of dynamic energy distribution during multi-energy coupling is solved, and the purposes of improving the endurance of urban roads, improving the endurance of expressways, reducing the increment cost of the system and being compatible with a 400V / 800V platform are achieved.

The invention discloses an aggregation scheduling method and device for adjustable resources, and belongs to the field of power scheduling, and the method comprises the steps: constructing a generalized energy storage model of each adjustable resource; clustering all adjustable resources according to the battery energy dissipation rate and the charging and discharging efficiency to obtain a plurality of polymers; solving a target translation factor of each adjustable resource in each polymer in each time section by taking the maximum space of the translated resource feasible region as a target and combining the transformation constraint of the feasible region; constructing a polymer feasible region constraint according to the generalized energy storage model and the target translation factor; the maximum new energy consumption is taken as a target, the polymer feasible region constraint and the power balance constraint are combined, the response power of each polymer is generated, and day-ahead scheduling is carried out according to the response power of each polymer. By implementing the method and the device, the demand response potential of the adjustable resources can be fully played, so that the problem that the response feasible interval of each resource cannot be accurately reflected when the adjustable resources are aggregated in the prior art is solved.

To provide a battery capable of easily and effectively improving the drop performance of the battery without affecting the energy density or a production process of the battery.SOLUTION: The present invention provides a battery including a package bag, an electrode assembly 10, an adapter 20, and a sealing material 40. The electrode assembly is provided inside the package bag. The electrode assembly includes a first electrode piece 11, and a first electrode lug 110 electrically connected to the first electrode piece. A first end 21 of the adapter is connected to the first electrode lug, and a second end 22 of the adapter stretches out of the package bag. The sealing material is provided between the adapter and the package bag. Along a width direction of the battery, a width of the first electrode lug is more than or equal to a width of the sealing material. By improving a size relation between the first electrode lug and the sealing material, the penetration of the sealing material to the electrode piece in a drop process of the battery can be effectively prevented.SELECTED DRAWING: Figure 1

A battery stack includes a plurality of battery management system (BMS) nodes and a controller. Each BMS node includes a battery, an isolation switch configured to selectably isolate the battery of the BMS node from the batteries of the other BMS nodes, and a bypass switch configured to selectably provide a path for electrical current flowing through the battery stack to bypass the battery of the BMS node. The batteries of the BMS nodes are electrically coupled in series. The controller is configured to control the isolation switch and the bypass switch of each BMS node such that the battery of each BMS node can be individually connected to and disconnected from an electrical power source / sink.

The circuit adapter comprises a shell, a conductive column and a conductive sheet, the shell is provided with an assembly hole, two ends of the conductive column are respectively a first end portion and a second end portion, two ends of the conductive sheet are respectively a third end portion and a fourth end portion, the second end portion is electrically connected with the third end portion, and the fourth end portion is electrically connected with the second end portion. The conductive column and the conductive sheet are installed in the assembly hole, the first end portion is located outside the assembly hole, and the fourth end portion and the assembly hole form a switching cavity. The conductive columns and the conductive sheets are combined to conduct electricity, so that the space occupied by the switching copper bar is reduced, a basis is provided for improving the energy density of the battery, and the weight of the battery is reduced at the same time. And the fourth end part of the conducting strip and the assembly hole form an adapter cavity for inserting a copper column, so that compared with the prior art that an adapter copper bar is connected and fixed through a screw, the insertion is more convenient, the installation steps are reduced, and the production efficiency is improved.

According to the composite current collector manufactured by coating the two sides of the aluminum foil with the single-walled carbon nanotube coatings, the two sides of the thin rolled aluminum foil are precisely coated with the single-walled carbon nanotube coatings; a single single-walled carbon nanotube with comprehensive technical characteristics of relatively long length, proper diameter, relatively few growth defects, relatively high conductivity, relatively high mechanical strength and bending flexibility is used as a raw material, and two surfaces of a rolled aluminum foil are respectively and precisely coated to prepare coatings mainly comprising the single-walled carbon nanotube; the single-walled carbon nanotubes in the coating have high three-dimensional physical entanglement density, tensile strength and conductivity, the mechanical property of the composite current collector is improved, belt breakage is prevented, the novel composite current collector meets the smooth requirement of the battery production process, and the energy density of the battery is improved; the use amount of aluminum foil in the positive electrode current collector is reduced, direct contact between the aluminum material and the positive electrode active material is avoided, heat released by aluminothermic reaction during thermal runaway of the battery is reduced, and the safety of the battery is improved.

The invention discloses a vehicle battery energy management method and related equipment, and relates to the technical field of new energy vehicles, and the method comprises the steps: obtaining a driving mode and an environment temperature of a target vehicle; under the condition that the driving mode is a pure electric mode and the environment temperature is lower than a preset temperature threshold value, predicting first time sequence data of the power demand of the target vehicle along with time change in a future preset time period; according to the first time sequence data, determining a target net energy income obtained by heating the power battery of the target vehicle; and if the target net energy income is greater than the preset energy income threshold, heating the power battery to the target battery temperature. The predictive decision is made by introducing the target net energy benefit, the battery heating is intelligently controlled in the low-temperature pure electric mode, the endurance and driving experience is remarkably improved, the optimal energy utilization is ensured, and low-cost and high-benefit popularization and application can be realized by relying on the existing hardware.