565 results about "Discharge current" patented technology

A battery heating system includes: a temperature monitoring circuit configured to output a temperature monitoring signal; a voltage conversion circuit configured to receive a first voltage that is input by a power supply or a second voltage that is input by a to-be-heated battery; and a control circuit configured to receive the temperature monitoring signal and output a control signal. The voltage conversion circuit is configured to perform boosting processing or bucking processing on the first voltage based on the control signal or perform boosting processing or bucking processing on the second voltage based on the control signal to enable the to-be-heated battery to receive a charging current from the power supply in a first time segment using the voltage conversion circuit and the to-be-heated battery to output a discharging current to the power supply in a second time segment using the voltage conversion circuit.

The invention discloses an electric energy discharge control device. The energy storage circuit is used for storing potential storage electric energy; the bleeder circuit is used for releasing the potential storage electric energy through a bleeder resistor and a bleeder transistor which are connected in series; the reference voltage setting circuit is used for outputting a reference voltage signal; the bleeder sampling feedback circuit is used for outputting a bleeder sampling feedback electric signal according to the bleeder sampling current of the bleeder resistor; the post-stage voltage feedback circuit is used for outputting a post-stage voltage feedback electric signal according to the potential storage voltage; and the conduction degree of the discharge transistor is controlled according to the post-stage voltage feedback electric signal, the reference voltage signal and the discharge current collection feedback electric signal. The conduction degree of the bleeder transistor is dynamically controlled according to the bleeder current collection feedback electric signal and the post-stage voltage feedback electric signal, so that the change of potential storage electric energy of the energy storage device is dynamically adapted, the bleeder power and the current of the bleeder circuit are stable and controllable, and a higher bleeder rate can be realized under the condition that the bleeder power and the current are kept unchanged.

The invention discloses a high-voltage bidirectional silicon controlled rectifier electrostatic protection device and a manufacturing method. The high-voltage bidirectional silicon controlled rectifier electrostatic protection device comprises a P-type substrate, a P-type well and a high-voltage N well, the emitter P + injection of a parasitic PNP triode and the emitter N + injection of a parasitic NPN triode in the P-type well are arranged alternately, so that the length of a transverse discharge path of the silicon controlled rectifier is reduced to the greatest extent, the square resistance of a PNPN positive feedback conduction path is greatly reduced, and the key problem that a symmetrical bidirectional silicon controlled rectifier structure cannot be effectively opened in a high-voltage window of more than 70V is solved; in addition, the layout can provide an additional parasitic NPN triode path for a silicon controlled rectifier path, the effective area of an emitter of the parasitic NPN triode and the proportion of the emitter in a silicon controlled rectifier loop are increased, and the current discharge capacity of the device is further improved. Therefore, reference can be provided for the structural design of the high-voltage symmetrical bidirectional silicon controlled rectifier electrostatic protection device, and the silicon controlled rectifier can be effectively applied to ESD protection of a high-voltage bidirectional port.

The invention relates to the technical field of high-voltage electrostatic parameter measurement and circuit detection and analysis, and discloses a lampblack purifier high-voltage field intensity detection circuit method based on electrical variable measurement, which comprises the following steps: acquiring a real-time discharge current and output voltage data sequence of a detected electrostatic field load; determining a dynamic electrical stiffness parameter according to the response gradient; extracting a direct current component of the current to determine a real-time leakage conductance parameter; establishing coupling characteristics of the electrical stiffness increment and the leakage conductivity change rate, and judging impedance boundary displacement when the characteristics are mismatched; calculating the virtual displacement of the surface of the polar plate by using the discrete curvature of the electrical stiffness evolution trajectory; according to the method, the field intensity dynamic compensation is realized by sensing the change of a charge migration path, and the calculation deviation caused by medium accumulation is eliminated.

The invention relates to the technical field of hybrid electric vehicle energy management, in particular to a hybrid electric vehicle layered reinforcement learning energy management method considering energy source life and energy consumption optimization. The method comprises the following steps: establishing an energy management system model and an energy source degradation model; energy source physical characteristics are analyzed, demanded power is processed in a layered mode, and an energy management learning strategy based on historical data is constructed; and energy management is implemented by combining the demand power change, the lithium battery, the super capacitor SOC and the degeneration degree of the energy source. Fuzzy filtering is adopted to shunt required power, a high-frequency peak value is borne by a super capacitor, and low-and-medium-frequency power is proportionally distributed by a lithium battery and a fuel battery according to the degradation degree; energy source degradation and deep reinforcement learning are fused, related parameter weighting is introduced into the ECMS, and lithium battery charging and discharging current is restrained. According to the method, comprehensive energy consumption can be reduced, energy source degradation is slowed down, the working condition application range is widened, overcharge and overdischarge of the lithium battery are avoided, the service life of the lithium battery is prolonged, and the SOC of the energy storage element is stabilized in a reasonable interval.

The invention relates to the technical field of motor insulation state monitoring, and discloses a motor winding turn-to-turn discharge monitoring method and device based on Rogowski coils. The high-pass integrator is matched to carry out integral operation on coil output signals in a centralized mode to obtain high-frequency discharge current data, then fault characteristic quantity is constructed based on the data, the fault position of the motor cable is determined, an independent monitoring module does not need to be configured for each phase of cable, and the single high-pass integrator can complete centralized processing of multi-coil signals. Not only is the use amount of core monitoring parts greatly reduced to reduce the monitoring cost, but also the hardware layout is remarkably simplified to save the installation space, and meanwhile, the data processing nodes are reduced to reduce processor resource occupation, and the problems of high monitoring cost, large space and resource consumption and low monitoring efficiency in the prior art are effectively solved.

The invention provides an electrical equipment overheating hidden danger early warning method and system based on unmanned aerial vehicle multi-spectral imaging, and belongs to the technical field of power equipment state monitoring, and the method comprises the steps: firstly obtaining ultraviolet photons and spatial point cloud data collected by an unmanned aerial vehicle; a three-dimensional model is constructed based on the point cloud, and electric field distribution information is obtained through finite element analysis. And the photon data and the electric field information are combined, and the discharge charge quantity and distribution are obtained through space inversion correction. And calculating the discharge current density by using an energy dissipation model, and determining the discharge thermal power loss density in combination with the local electric field. And finally, a steady-state heat conduction equation is solved based on the heat conduction and dissipation parameters, temperature field distribution under heat balance is calculated, and early warning information is generated when the steady-state temperature exceeds a heat-resistant threshold value. According to the invention, early-stage accurate prediction and positioning of the hidden overheating fault of the electrical equipment caused by insulation degradation are realized.

The utility model relates to an electrode assembly with discharge bulges and a water treatment device adopting the same. The electrode assembly comprises two electrode plates which are oppositely arranged, discharging protrusions are arranged on the surfaces of the discharging sides of the electrode plates, a gap is reserved between the discharging protrusion on any electrode plate and the other electrode plate, and the discharging sides of the discharging protrusions are of a mushroom head structure and are installed on the electrode plates in a detachable connection mode. The water treatment device is provided with a pretreatment tank or an electric flocculation tank, the electrode assembly is arranged in the pretreatment tank or the electric flocculation tank, outlet water of the pretreatment tank or the electric flocculation tank is connected into an aerobic tank, outlet water of the aerobic tank is connected into a secondary sedimentation tank, and outlet water of the secondary sedimentation tank is connected into a clean water tank. The electrode assembly provided by the utility model can reduce the discharge voltage requirement under the condition of keeping a relatively large discharge current, so that the preparation cost and the operation cost are further reduced, and scaling separation after positive and negative electrode guiding is facilitated.

The invention discloses a flow battery external characteristic prediction method and equipment. The method comprises the following steps: constructing an equivalent circuit model and a thermal model of an all-vanadium flow battery; calculating equivalent circuit parameters of the equivalent circuit model according to the initial electrolyte temperature and the initial vanadium ion concentration of each valence state; calculating battery output voltage and electric power at the current moment according to the equivalent circuit parameters and the charging and discharging current; inputting the environment temperature and the electric power at the current moment and the pump power of the circulating pump into a thermal model, and solving the temperature of the galvanic pile electrolyte at the next moment; inputting the stack electrolyte temperature at the next moment into the dynamic differential equation of the vanadium ion concentration to obtain the vanadium ion concentration at the next moment; the electrolyte temperature and the vanadium ion concentration at the next moment are fed back to the equivalent circuit model, loop iteration is conducted till the battery charging and discharging process reaches a steady state, and the output voltage and the stack electrolyte temperature of the flow battery at each moment in the charging and discharging process are obtained. The computing resources are reduced, and the prediction accuracy is improved.

The invention discloses a high-power multi-channel independent delay detonation control system which comprises a main controller, the main controller is connected with an integrated cabinet, a battery pack module, an inverter module and a rectifier module are arranged in the integrated cabinet, and a controller module, the battery pack module, the inverter module, the rectifier module and the controller module are connected in sequence; a heat dissipation system is arranged in the integrated cabinet, and the controller module is connected with an ignition device in the blast hole. The invention further discloses a high-power multi-channel independent delay detonating control method, the problems that existing detonating equipment is short in discharging time, small in discharging current, low in discharging power and few in output channel are solved, and the high-power multi-channel independent delay detonating control method can be widely applied to bursting balloons and detonating fireworks and crackers. And the device can also be used as detonating equipment for an explosive blasting technology, a carbon dioxide blasting technology and a liquid oxygen rock breaking technology.

This invention provides a method for accurately estimating the internal temperature of a secondary battery while considering the state of charge (SOC) and charge / discharge state. The method is a method (80) for estimating the internal temperature (T) of a vehicle secondary battery (1), comprising a repeatedly executed change determination process (50) and a repeatedly executed internal temperature estimation process (60, 60'). The change determination process includes: (54) a step of determining a first change (21) in the internal resistance (R) relative to the charge rate (SOC) based on the voltage (V) and charge / discharge current (I) of the secondary battery when the vehicle is stationary or at the start of driving; and (22) a step of determining a second change (22) in the internal resistance relative to the charge rate based on the voltage and charge / discharge current during vehicle operation. Step (57) of the internal temperature estimation process includes: measuring the external temperature (To) of the secondary battery (62); measuring the charge and discharge current (63); calculating the charge rate (64); determining whether the secondary battery is discharging (66); selecting a first change when discharging (67); selecting a second change when not discharging (68); calculating the internal resistance based on the selected change and the calculated charge rate (69); and estimating the internal temperature based on the external temperature, charge and discharge current, and internal resistance (70).

This invention provides a battery heating system and method for an electric vehicle superstructure, relating to the field of battery preheating technology. The system includes: an electric vehicle superstructure comprising a drive motor controller, a generator, a generator controller, a DC-DC converter, a low-voltage battery, a power battery, a hybrid controller, an integrated capacitor, a superstructure load, and a drive motor; the generator is connected to the vehicle chassis engine; the power battery has a built-in battery distribution module; the battery management unit includes a positive contactor, an integrated capacitor, a negative contactor, and a charge / discharge current meter connected in series, wherein a resistor R1 and a pre-charge contactor are connected in parallel to the positive contactor, and the drive motor controller and the generator controller are connected in parallel to the integrated capacitor; the battery management unit also includes a heating contactor, a heating current meter, and a PTC thermistor pair connected in series, wherein the heating contactor is connected to the positive terminal of the power battery, and the PTC thermistor pair is connected to the negative contactor.

The application provides a test method of a power grid based on RTDS and energy storage signal interaction simulation system, comprising: running a real-time digital simulation system, and issuing a start-up instruction by a storage converter; a battery model real-time simulation machine in a hardware-in-the-loop test system charges according to the start-up instruction; the frequency of a power grid model in a real-time simulation host is adjusted to a trigger threshold of primary frequency modulation, and a discharge instruction is issued by the storage converter; the battery model real-time simulation machine outputs active power according to the discharge instruction, and discharges according to the discharge current, and the discharge process is fed back to the real-time digital simulation system through a battery management system. The application also provides a power grid based on RTDS and energy storage signal interaction simulation system. Through the real-time digital simulation system, the storage converter, the hardware-in-the-loop test system and the battery management system, synchronous simulation of the power grid-energy storage is performed, and a real application scenario of charging, discharging, start-up and shutdown real-time adjustment of the energy storage container during grid connection is simulated.

The invention provides a battery SOC-OCV curve obtaining method and system and electronic equipment, and relates to the technical field of batteries. The method comprises the following steps: acquiring direct-current impedance of a to-be-detected battery; the method comprises the following steps of: performing constant-current discharge on a to-be-detected battery in a full charge state at a plurality of sections of discharge rates which are sequentially reduced, acquiring the working voltage and the RSOC of the to-be-detected battery in each section of discharge process, and fitting to obtain an RSOC-working voltage curve, the constant current used in the first section of discharge process being the standard discharge current of the to-be-detected battery, and the constant current used in the second section of discharge process being the standard discharge current of the to-be-detected battery; the starting voltage point of each subsequent discharge process is triggered to be switched when the working voltage of the battery to be tested in the previous discharge process reaches a corresponding preset threshold value; and performing IR compensation on the RSOC-working voltage curve according to the DC impedance to obtain an SOC-OCV curve of the battery to be detected. According to the technical scheme, the acquisition time of the SOC-OCV curve can be greatly shortened on the premise of ensuring the curve precision.

This invention discloses a high-precision ramp generator and a two-step single-slope analog-to-digital converter. The ramp generator includes a bandgap reference source circuit, a voltage-to-current conversion circuit, a weighted current DAC current source array, a charge / discharge current regulation circuit, a mode switching circuit, and a bias circuit. In this invention, the quantization process of the ramp generator is decomposed into two stages: coarse quantization and fine quantization, significantly reducing quantization time. Furthermore, a single output stage can combine a DAC-type ramp generator and a capacitor-integrating ramp generator, saving area and power consumption in chip design, improving the compatibility of the ramp generator, solving the linearity and stability problems introduced by stepped ramps in high-speed, high-precision applications, and reducing design complexity.

The invention discloses a transformer substation electromagnetic interference source modeling and positioning method based on multi-physics field coupling, relates to the technical field of interference positioning, is used for solving the problem of insufficient positioning precision of an electromagnetic interference source, and aims at solving the problem of low positioning precision of the electromagnetic interference source by collecting grounding potential data of a grounding grid monitoring node, calculating a potential deviation index and judging whether discharge abnormality exists or not. And when an abnormality occurs, accessing a historical database to call grounding impedance data of the marked grounding electrode, analyzing an impedance fluctuation trend, detecting a discharge current amount in each discharge direction, marking the grounding electrode by combining a discharge imbalance characteristic, dividing and screening an abnormal corrosion area, and obtaining surface magnetic field data and surface temperature data of each divided area. A discharge concentration coefficient is calculated through magnetic field distribution characteristics and a surface temperature coefficient, a positioning index is generated in combination with discharge path data, a discharge positioning area is screened, and the corrosion positioning precision and maintenance effectiveness of the grounding grid are improved.

Disclosed is a Hall-effect propulsion system comprising a Hall-effect thruster (10), a cathode (40), and an electrical power supply (80) including an engine power supply (81) delivering an engine discharge current (Id) to the cathode (40) allowing an engine discharge (DM) to be created in a gas contained in the Hall-effect thruster (10), and a secondary power supply (82) delivering a secondary discharge current (Ik) to the cathode (40). The Hall-effect propulsion system comprises means (90) for controlling the electrical power supply (80), which are configured to command delivery of a secondary discharge current (Ik) by the secondary power supply (82) to the cathode (40) in order to keep the cathode (40) at a minimum operating temperature between two activations of the engine power supply (81).

This invention discloses a method, apparatus, and electronic device for estimating the state of charge (SOC) of a vehicle battery. The method includes: acquiring target discharge parameters corresponding to a target battery, wherein the target discharge parameters represent the discharge state of the target battery at a first time step; predicting the target discharge parameters using a target neural network to obtain a target prediction result corresponding to the target battery, wherein the target prediction result represents the SOC of the target battery at a second time step. The target neural network includes multiple base learners, which are trained using multiple sets of historical discharge parameters. Each set of historical discharge parameters includes: discharge voltage, discharge current, a first measurement temperature, and a second measurement temperature. This invention solves the technical problem of low accuracy in battery SOC estimation caused by insufficient nonlinearity in the battery SOC estimation model in related technologies.

This invention provides a stationary energy storage system that can reduce the frequency of system maintenance by controlling the usage load of multiple energy storage devices in the stationary energy storage system according to the lifespan of the equipment. [Solution] The stationary energy storage system 100 comprises a first energy storage device 110 and a second energy storage device 120 electrically connected to a power grid PG, and a system control unit 20 that controls a plurality of energy storage devices 104. The first energy storage device 110 has a first battery 113, and the second energy storage device 120 has a second battery 123. The system control unit 20 obtains the first state of overheating (SOH) of the first battery 113 and the second state of overheating (SOH) of the second battery 123, and if the SOH of the first battery is higher than the SOH of the second battery, it distributes a higher charge / discharge current to the first battery 113 than to the second battery 123.

The invention discloses a corona discharge stability control method, device and equipment for aerosol concentration detection and a medium. A ring electrode comprising a first cavity and a second cavity which are coaxially and sequentially arranged is arranged, a corona pin is coaxially located in the first cavity, and a pin tip is located close to the second cavity; a control chip is adopted to convert a low-voltage direct-current power supply signal into a high voltage of 2kV + / -5% through PWM signal control, and the high voltage is applied between the corona pin and the ring electrode; and comprehensively performing compensation control on the discharge current of the corona pin to obtain a first compensation control quantity and performing compensation control on the environmental parameters to obtain a second compensation control quantity to obtain a total compensation control quantity, and adjusting the duty ratio of the PWM signal of the control chip through the total control quantity. According to the embodiment of the invention, the current stability is high, the environmental adaptability is good, the discharge voltage is low, and the service life of the corona pin is long.

The invention discloses a modeling method for a streamer discharge process in natural ester insulating oil by considering ionization in bubbles. The modeling method comprises the following steps: 1) constructing a two-dimensional non-axisymmetric model for simulating discharge of bubbles to streamers in the natural ester insulating oil under lightning impulse voltage; 2) introducing a plasma chemical reaction, and constructing a natural ester insulating oil stream discharge electrohydrodynamic model coupled with an ionization process of gas molecules in bubbles; and after a set voltage is applied to the two-dimensional non-axisymmetric model, the natural ester insulating oil streamer discharge electro-hydrodynamic model simulates a natural ester insulating oil streamer morphology evolution process. According to the method, the drift-diffusion-reaction process of the plasma in the bubble and the Poisson equation are subjected to self-consistent solution, and the plasma generation process in the bubble under the strong electric field is integrated into the existing streamer discharge model, so that the method is beneficial to understanding the liquid dielectric breakdown theory.

A method for periodic deep discharge to extract lithium in silicon-dominant anodes may include providing a cell comprising a cathode, a separator, and a silicon-dominant anode; charging and discharging the cell through a plurality of cycles; and, following the plurality of cycles, performing one or more deep discharge cycles, where each of the one or more deep discharge cycles comprises a cutoff voltage below a normal operating voltage range of the cell. The one or more deep discharge cycles may comprise a C / 10 or lower or C / 20 or lower discharge current. The one or more deep discharge cycles may include a cutoff voltage of 3.2 V or less, a cutoff voltage of 2.5 V or less, a cutoff voltage of 1.5 V or less, or a cutoff voltage of 1 V or less. The cell may be configured at a higher temperature during the one or more deep discharge cycles.

The invention discloses a short-circuit current calculation method for an electric-electric hybrid ship direct-current integrated power system, which comprises the following steps of: respectively carrying out interelectrode short-circuit current analysis calculation on synchronous rectification generators to obtain generator short-circuit current; filter capacitor discharge current analytic calculation is carried out on the DC / DC converters respectively, and transient discharge current is obtained; analyzing and calculating the steady-state short-circuit current output by the lithium battery through the DC / DC converter to obtain the steady-state short-circuit current; and adding the results to obtain the short-circuit current of the system. Compared with electromagnetic transient simulation calculation, the calculation speed is higher, and the calculation result error meets the allowable deviation range of engineering calculation. The method can provide support for protection design and short-circuit safety check of an electricity-electricity hybrid ship direct-current integrated power system powered by a synchronous rectification generator set and lithium battery energy storage in parallel, and can be applied to ship integrated power system application scenes such as harbors as tugs and offshore large transport ships.

The utility model relates to a battery charging and discharging current switching control circuit. A charging control signal is respectively connected with the input ends of a first NOT gate and a first NAND gate; the output end of the first NOT gate is respectively connected with the input ends of the second NAND gate and the third NAND gate; a discharge control signal is respectively connected with the input end of the second NOT gate, the other input end of the second NAND gate and the other input end of the third NAND gate; the output end of the second NOT gate is connected with the other input end of the first NAND gate; the output end of the first NAND gate is connected with the base electrode of the first triode through the first resistor; the collector electrode of the first triode is connected with the charging power module and the emitter electrode is connected with the anode of the first diode. The output end of the second NAND gate is connected with the base electrode of a second triode through a second resistor; the collector of the second triode is connected with the discharge power module; the cathodes of the first diode and the second diode are grounded. According to the utility model, instantaneous switching of charging and discharging is ensured.

The invention provides a battery self-checking control method for a bidirectional buck-boost system. The method comprises the steps that a first output signal is calculated based on a battery current reference value, a battery current sampling value and an inductive current sampling value, and the battery current reference value is a discharge current set during battery self-inspection; calculating a second output signal based on the bus voltage reference value, the bus voltage sampling value, the battery voltage sampling value and the battery current reference value; generating a duty ratio of a first driving signal for the charging and discharging circuit based on the first output signal; a duty cycle for a second drive signal of the PWM rectifier is generated based on the second output signal. On the basis of a bus voltage outer ring and a high-frequency inductive current inner ring, a battery current inner ring and a rectifier current inner ring are added, and under the condition of constant current discharge, the bus voltage is controlled together. Therefore, during self-inspection of the battery, the stability of the bus voltage can be maintained while the battery is ensured to be discharged at a constant current.

This invention discloses a method for measuring the maximum depth of continuous etch pits under uninterrupted single-pulse electrical discharge machining (EDM). The invention derives the maximum depth of etch pits when the EDM fluid is free of mixed powder and the workpiece is stationary by performing single-pulse etching trials on the workpiece. Then, by performing single-pulse etching trials on the workpiece with mixed powder in the EDM fluid and the workpiece stationary, the maximum depth of a single etch pit is derived when the EDM fluid contains mixed powder and the workpiece is moving. Finally, the maximum depth of all but the first etch pit in a plurality of consecutive etch pits is derived when the EDM fluid contains mixed powder and the workpiece is moving. This invention provides data for measuring the surface roughness of workpieces subjected to uninterrupted single-pulse etching under different discharge voltages, discharge currents, discharge times, or workpiece materials.

The invention relates to a method for measuring the internal pressure of at least one vacuum interrupter (12), comprising the following steps: applying a voltage (U) between an anode and a cathode of the vacuum interrupter (12), applying a magnetic field (F) to deflect an electron path, measuring a discharge current of gas particles that have been struck and thereby ionized by electrons and have discharged in a vacuum of the vacuum interrupter (12), and measuring the internal pressure by converting the discharge current (I), wherein the measurement of the discharge current (I) is carried out in a defined sub-region (24) of the vacuum interrupter (12). The invention further relates to a measuring system (10) for operating such a method.

The application discloses an energy path optimization method for a multi-medium mixed energy storage unit, relates to the technical field of energy path optimization, and is used for solving the problems of unbalanced energy path and insufficient system cycle activity. The last energy charging and discharging time of each energy storage unit is detected, the energy retention duration is calculated and the energy storage unit is marked, the charging and discharging cycle number and historical charging and discharging data of the marked energy storage unit are acquired, it is judged whether to enter an energy transfer storage mechanism, when the energy transfer storage mechanism is entered, the target energy storage unit is selected according to the medium type of the marked energy storage unit, the discharge current and heat exchange flow of the target energy storage unit are analyzed to determine the energy receiving characteristics, and it is judged whether to transfer the retained energy of the marked energy storage unit to the target energy storage unit according to the energy receiving characteristics. The efficiency decline problem caused by the energy retention of part of the energy storage units in the long-term operation of the multi-medium energy storage unit is solved, and the balance of the energy path and the cycle activation are realized.

This invention proposes a charge-discharge optimization system based on energy storage batteries, belonging to the field of energy storage battery equalization management technology. It includes: a parameter acquisition module for collecting real-time status data of each battery; an anomaly identification module for performing multi-parameter weighted clustering processing on the real-time status data using a clustering algorithm to obtain the comprehensive anomaly degree of each battery; a power evaluation module for calculating the charging capacity evaluation value and discharging capacity evaluation value of each battery; and a coordination allocation module for performing differentiated control on charging and discharging modes based on the charging capacity evaluation value, discharging capacity evaluation value, and comprehensive anomaly degree. In charging mode, a progressive current allocation strategy based on comprehensive anomaly degree is used to obtain the charging current allocation; in discharging mode, a hierarchical protection strategy based on capacity evaluation is used to obtain the discharging current allocation. This invention can achieve accurate identification of abnormal batteries, accurate evaluation of the dynamic charge-discharge capacity of each battery, and intelligent execution of the differentiated coordination allocation strategy.