42results about How to "Improve balance efficiency" patented technology

The invention provides a battery management system design method applied to a direct-current photovoltaic micro-grid. The system comprises a data acquisition and monitoring module, an intelligent algorithm analysis module and a dynamic balance management module. Parameters such as voltage, current and temperature of the battery pack are collected in real time through a sensor, data are processed and analyzed through big data analysis and a machine learning algorithm, and the health state and the residual life of the battery pack are predicted. And the system dynamically adjusts the charging and discharging states of each battery unit according to an analysis result, so that the over-charging and over-discharging phenomena are avoided, and the service life of the battery pack is prolonged. According to the intelligent battery management system, the operation efficiency and reliability of the photovoltaic micro-grid are improved, and remarkable economic and social benefits are achieved.

The invention relates to the technical field of battery active equalization, and provides a battery equalization method and system and an automobile, and the method comprises the steps: when an equalization instruction is received, repeatedly executing the following steps until an equalization stopping instruction is received: controlling a gated battery to be discharged in a battery pack to charge a super capacitor through bidirectional synchronous BUCK; monitoring the state of the super capacitor in the charging process; if the super capacitor reaches the target charging state, controlling the super capacitor to charge a gated battery to be charged in the battery pack through bidirectional synchronous BUCK; monitoring the state of the super capacitor in the discharging process; and if the super capacitor reaches the target discharge state, controlling the bidirectional synchronous BUCK to stop working. According to the active equalization scheme, the system cost is reduced, and the system equalization efficiency and the overall conversion efficiency can be effectively improved due to the fact that the bidirectional synchronous BUCK circuit is used as an energy conversion circuit for battery equalization.

The invention discloses a battery energy storage system equalization device and equalization method based on a reconfigurable converter, and belongs to the technical field of battery management. The device comprises a battery pack formed by connecting N single batteries in series, a switch array, a reconfigurable converter, a current monitoring circuit, an SOC monitoring circuit and a control circuit, N is larger than or equal to 1, each single battery is connected with the input end of the SOC monitoring circuit, the switch array comprises 2N gating switches, and the control circuit is connected with the input end of the SOC monitoring circuit. The two ends of each single battery are respectively provided with a gating switch and are connected with the primary side of the reconfigurable converter and the input end of the current monitoring circuit through the gating switches arranged at the two ends, and the secondary side of the reconfigurable converter is connected with the two ends of the battery pack; the control circuit is connected with the reconfigurable converter, the reconfigurable converter is provided with at least two circuit structures, and the two circuit structures correspond to different gains respectively; the control circuit is further connected with the output end of the SOC monitoring circuit, the output end of the current monitoring circuit and the switch array.

The invention discloses a lithium battery pack equalization method based on an improved Buck-Boost circuit and GSSO optimization fuzzy control, which is used for solving the problems of inconsistent energy and low equalization efficiency in the long-term use process of a series lithium battery pack. The designed improved Buck-Boost equalization circuit adopts an optimized REB-TCM structure, and by optimizing an energy transmission path, the conversion loss is reduced, and the equalization speed is improved. Aiming at the topological structure, the invention provides a dual-value fuzzy control model (DualFLC) which can dynamically select an equalization target according to the state of charge (SOC) of the battery and dynamically adjust an equalization module through a fuzzy strategy so as to improve the equalization efficiency. On the basis, a swarm ensorption hybrid optimization algorithm (GSSO) is introduced for the first time, global optimization is carried out on node positions of fuzzy control input discourse domains, the limitation that traditional fuzzy control depends on experience and subjective judgment on a membership function is overcome, and the performance of a balance system is further improved. The method effectively improves the equalization speed and efficiency, reduces the energy inconsistency between the batteries, and prolongs the service life of the battery pack.

The invention relates to a battery management system, a control method and device thereof, a storage medium and a program product. The control method of the battery management system comprises the steps that for each battery module in a battery device, the maximum value, the minimum value and the average value of voltage of all battery cells in the battery module are obtained, and the battery device comprises a plurality of battery modules; determining a first voltage difference according to an absolute value of a difference value between the minimum value and the average value; determining a second voltage difference according to an absolute value of a difference value between the maximum value and the average value; according to the first voltage difference and the second voltage difference, battery equalization is carried out on the battery module, and the battery equalization comprises at least one of battery active equalization and battery passive equalization. According to the invention, the active and passive hybrid equalization design of the battery can be carried out according to the maximum undervoltage difference and the maximum overvoltage difference, so that the equalization efficiency is improved, the consistency of the battery is improved, the safety of the battery is ensured, and the service life of the battery is prolonged.

The invention discloses a small-size high-efficiency large-current lithium battery active equalization circuit and a control method thereof, the small-size high-efficiency large-current lithium battery active equalization circuit comprises active equalization modules which are connected in parallel between two connected battery cells, and each active equalization module is composed of four switching tubes and a group of resonance branch circuit which is formed by connecting an inductor and a capacitor in series; n-1 active equalization modules are needed for a battery pack composed of N battery cells. The LC series branch serves as an energy temporary storage unit to replace a traditional inductance type single inductor or capacitance type multiple capacitors, the number of elements is reduced, meanwhile, low-loss energy transfer is achieved through resonance characteristics, and the equalization scheme has the advantages of being small in size, large in equalization current, small in equalization energy loss between battery cells, high in efficiency and the like.

Embodiments of the present application provide a spring extension and retraction amount adjustment method and device, a storage medium and an electronic device, wherein the method comprises: determining a first driving torque peak value, a first average driving torque in a gate rod lifting process of a gate, and a second driving torque peak value, a second average driving torque in a gate rod falling process; determining a first torque difference value of the lifting process and the falling process based on the first driving torque peak value, the first average driving torque, the second driving torque peak value and the second average driving torque; determining a target state of a spring connected with the gate rod in the gate based on the first torque difference value; and adjusting the target extension and retraction amount of the spring based on the first torque difference value in a case where the target state indicates that the spring is in an abnormal state. Through the present application, the problem of low gate balance adjustment efficiency in the related art is solved, and the effect of improving the gate balance adjustment efficiency is achieved.

The utility model relates to an oiling agent delivery pump which comprises a pump body and a gear shaft. The pump body comprises an oil inlet, an oil outlet and a pressure regulating channel, the oil inlet and the oil outlet are communicated through the pressure regulating channel, the oil outlet is communicated with an oil path of oil-consuming equipment, and the pressure regulating channel is communicated with a low-pressure space of the oil-consuming equipment; and the pressure regulating channel is used for regulating the pressure in the pump body and conveying high air pressure to a low-pressure space of oil-consuming equipment so as to balance the pressure between the oil agent conveying pump and the oil-consuming equipment. According to the utility model, no extra corollary equipment needs to be added, and the pressure regulating effect is low in cost.

The utility model belongs to the technical field of energy storage, and particularly relates to a battery cell equalization circuit and an energy storage system, comprising a battery string formed by serially connecting battery cells, each battery cell is provided with a voltage conversion module in one-to-one correspondence, the input ends of the voltage conversion modules are connected in parallel with the battery cells, and the output ends of the voltage conversion modules are serially connected to form an equalization branch. And the equalization branch is connected with the battery series and parallel. According to the utility model, the battery string can be shunted in parallel through the equalization branch circuit formed by the voltage conversion modules, so that part of energy of the battery string is output through the equalization branch circuit. When the electric quantity or the voltage of the battery cell is unbalanced, the output power of the battery cell is adjusted through the voltage conversion module for equalization, and discharging equalization, charging equalization and off-line equalization are supported.

The application discloses a kind of new energy automobile battery pack dynamic equalization control method, comprising the following steps: acquisition battery pack during operation Multidimensional data;Carry out noise suppression, obtain Multidimensional denoising data;Estimate the state parameter of each battery by using the improved Kalman filtering algorithm based on adaptive forgetting factor;Construct multidimensional equalization priority evaluation model, determine high priority battery;Based on the hybrid algorithm of deep reinforcement learning and model predictive control, generate the dynamic equalization strategy of each high priority battery;Based on bidirectional step-down-boost converter topology, using adaptive duty cycle regulation algorithm according to dynamic equalization strategy Equalization control.This application improves the equalization control comprehensiveness and reliability of new energy automobile battery pack by combining improved Kalman filtering algorithm, multidimensional equalization priority evaluation model, hybrid algorithm based on deep reinforcement learning and model predictive control, adaptive duty cycle regulation algorithm.

The application discloses a data balancing method and device, equipment and storage medium, and relates to the technical field of computers. The method comprises the following steps: performing hash processing on first samples and second samples in a data set, and mapping the first samples and the second samples into first hash buckets and second hash buckets; determining second samples matched with the first samples in the first hash buckets from second hash buckets adjacent to first hash buckets in the first hash buckets; searching in adjacent hash buckets in a counterfactual search process, reducing a search range, reducing a search amount, and improving search efficiency. Then, based on a feature relationship between the first samples and the second samples, third samples in the second samples are processed to obtain fourth samples. The labels of the fourth samples are consistent with the labels of the first samples, and data balancing is realized. Since the time required by the search process is shortened, the efficiency of data balancing is improved.

The invention discloses a battery pack offline balancing method, an energy storage device, electronic equipment and a storage medium. The battery pack off-line equalization method comprises the following steps: acquiring the optimal temperature rise rate of current equalization, the awakening times of the main control board and the duty ratio of the previous equalization; if the awakening frequency of the main control board is equal to zero, taking the online temperature rise rate during online equalization as the previous equalization temperature rise rate; if the awakening frequency of the main control board is greater than zero, taking the equalization temperature rise rate during the previous offline equalization as the previous equalization temperature rise rate; calculating the current equalization duty ratio according to the current equalization optimal temperature rise rate, the previous equalization temperature rise rate and the previous equalization duty ratio; and balancing the battery pack according to the current balancing duty ratio. According to the embodiment of the invention, the equalization duty ratio in the off-line equalization period can be adjusted according to the optimal temperature rise rate of the current equalization and the temperature rise rate of the previous equalization, so that the time ratio for equalization in the off-line equalization period is improved, and the equalization efficiency of off-line equalization of the battery pack is improved.

The present invention provides an active battery voltage equalization circuit and current equalization method, wherein the circuit includes: multiple lithium batteries connected in series; thyristor circuits respectively connected to both ends of each lithium battery, and the connection between the previous lithium battery and the next lithium battery shares the thyristor circuit; the thyristor circuit includes a first thyristor, a second thyristor, a first diode and a second diode, wherein the first thyristor and the second thyristor are connected in series, the first diode is connected in parallel with the second thyristor, and the second diode is connected in parallel with the first thyristor; multiple conducting thyristors respectively connected between the thyristor circuits at both ends of each lithium battery; and energy storage inductors connected in parallel to both ends of the multiple conducting thyristors. It can realize active voltage equalization of lithium batteries at different positions, and can adjust the size of the equalization current according to the working state of the lithium battery, effectively save resources, and extend the battery life.

An equalization control circuit for prolonging the service life of a battery energy storage system comprises a battery management system and an equalization circuit module electrically connected with the battery management system. The equalization circuit module comprises an inter-cell equalization circuit and an inter-module equalization circuit; the n single batteries of the whole module are averagely divided into m battery packs, each battery pack comprises k single batteries, m is greater than or equal to 2, and k is greater than or equal to 2; the inter-cell equalization circuit is arranged between every two adjacent single batteries in the battery pack; k single batteries connected in series in each battery pack are regarded as a whole, the positive electrode of the first battery serves as the positive electrode of the battery pack, the negative electrode of the kth battery serves as the negative electrode of the battery pack, the inter-module equalization circuit is connected between the positive electrode and the negative electrode of each battery pack, and the inter-module equalization circuit is further connected with the whole module through the transformer. According to the utility model, the electric quantity transfer between the adjacent single batteries in the battery pack and the bidirectional electric quantity transfer from any battery pack between the battery modules to the whole can be realized.

The embodiment of the present invention provides an inductive active balancing strategy and system, which belongs to the technical field of battery charge balancing. The balancing strategy includes: obtaining a circuit diagram model of an active balancing circuit; constructing a bond graph model according to the circuit diagram model; determining the state equation of the active balancing circuit according to the bond graph model; determining the corresponding output equation according to the active balancing circuit; establishing a cost function equation according to the output equation; traversing the allowable value of the inductor current reference value to obtain the minimum value of the cost function equation; obtaining the inductor current reference value of each inductor in the active balancing circuit according to the minimum value of the cost function equation; performing active balancing operation according to the actual value of the inductor current and the inductor current reference value. The balancing strategy and system derive the state equation of the system by constructing a bond graph model, accurately describe the working condition of the system, and realize model prediction and control based on the state equation, thereby improving the efficiency of battery balancing.

The invention discloses an energy storage system and an equalization method. The energy storage system comprises multiple battery clusters, the multiple battery clusters are connected in parallel to form a first node and a second node, each battery cluster comprises at least one battery pack and an equalization circuit, each equalization circuit comprises a first switch unit and a first adjustable resistor, and one end of each first adjustable resistor is electrically connected with the first end of the corresponding first switch unit and one end of the corresponding battery pack; the other end of the first adjustable resistor is electrically connected with the second end of the first switch unit, and the third end of the first switch unit is electrically connected with the second node; or one end of the first adjustable resistor is electrically connected with the second end of the first switch unit, the other end of the first adjustable resistor is electrically connected with the first end of the first switch unit and the second node respectively, and the third end of the first switch unit is electrically connected with one end of the battery pack, so that the first adjustable resistor can be adopted to carry out equalization adjustment on the battery cluster. Therefore, the consistency among the battery clusters in the energy storage system is higher.

The utility model relates to a battery module capable of automatically balancing voltage, which structurally comprises a battery module, spring probes and an automatic balancing machine, a plurality of battery core pole pieces are arranged on the battery module, the spring probes corresponding to the battery core pole pieces in number and position are crimped on the battery core pole pieces, and the automatic balancing machine is arranged on the battery module. Each spring probe is in signal connection with an automatic balancing machine through a wire, all the wires form a wire harness, and the automatic balancing machine is connected with an external power supply. The utility model has the advantages that: 1) the battery cell voltage in the battery module can be automatically balanced, and compared with passive balance or active balance of a common BMS, the balance current is larger and is allowed to be not less than 200A, so that the balance efficiency can be greatly improved; the device is simple in structure, convenient to install, capable of using multiple sets of appliances to process multiple sets of batteries at the same time, capable of accurately controlling PID balance and guaranteeing balance accuracy, capable of achieving battery core balance in a module and module balance in a cluster and good in balance effect due to the fact that the device is provided with the two-way DC / DC circuit and the two-way AC / DC circuit.

The application discloses a modular equalization circuit and a control method thereof. The modular equalization circuit comprises a power supply, a converter, a selection switch, a transformer, a rectifier circuit, a filter and a battery equalization circuit which are connected in sequence. The number of modules is N, the number of energy storage units in each module is M, and the number of the rectifier circuit, the transformer, the filter and the battery equalization circuit is N. The number of the selection switch is N+1. Two output ends of the converter are marked as A and B respectively, i represents the i-th module, when i is odd, the one end of the switch S i is connected with A, the other end of the switch S i is connected with the same name end of the primary side of the transformer T i . When i is even, the one end of the switch S i+1 is connected with B, the other end of the switch S i+1 is connected with the different name end of the primary side of the transformer T i . When i is even, the one end of the switch S i is connected with B, the other end of the switch S i+1 is connected with A. The application significantly shortens the equalization path, improves the equalization efficiency and has strong expansibility.

This application relates to an energy storage control device, system, and method. The energy storage control device includes: an energy storage module comprising multiple battery cells, configured to be connected to a frequency converter module and configured to receive power from the frequency converter module or discharge power to the frequency converter module; and an equalization control module connected to the energy storage module, configured to: acquire a first target battery cell during the charging phase of the energy storage module; acquire a second target battery cell during the discharging phase of the energy storage module; determine a first priority of the first target battery cell and a second priority of the second target battery cell based on the state information of each battery cell; and perform equalization processing on the first target battery cell and the second target battery cell based on the first priority and the second priority of the second target battery cell; wherein the battery capacity of the first target battery cell is higher than that of the second target battery cell. This energy storage control device can reduce energy waste.

The invention discloses a multi-level battery active equalization circuit which is provided with a controller, a switch control unit and an energy transfer unit, the controller is connected with the switch control unit, and the energy transfer unit is connected with a first to-be-equalized target, a second to-be-equalized target and the switch control unit; the controller is used for collecting first voltage information of a first to-be-balanced target and second voltage information of a second to-be-balanced target and then controlling the working state of the switch control unit to transmit electric energy of the first to-be-balanced target to the second to-be-balanced target through the energy transfer unit. Or the electric energy of the second to-be-balanced target is transmitted to the first to-be-balanced target through the energy transfer unit, so that the preset states of the first to-be-balanced target and the second to-be-balanced target are the same, and the preset state balance between the first to-be-balanced target and the second to-be-balanced target is realized; the technical problems of high energy consumption, high cost and poor applicability during equalization between battery modules or between battery PACKs in the prior art are solved.

The invention discloses a full-sensing single battery detection method, which relates to the field of battery state acquisition monitoring, and comprises the following steps: connecting voltage and temperature acquisition sensors to the positive and negative electrodes of each battery, connecting the voltage acquisition sensors to the two ends of the positive and negative electrodes of the battery, and connecting the temperature acquisition sensor to the main body of the battery; an output temperature acquisition sensor and an output voltage acquisition sensor are connected to a monitoring unit; a plurality of monitoring units are accessed to a BMS master controller through a topological structure framework; wherein the topological structure framework comprises power supply and CAN bus transmission, and is used for receiving data to adjust a link topological structure of a single battery so as to realize charge and discharge efficiency balance. According to the invention, the equalization efficiency of the battery system is greatly improved, the consistency of the battery system is guaranteed, and the use efficiency of the battery is improved.

The application discloses a battery power equalization method and device and electronic equipment. The method comprises the following steps: dividing a plurality of single batteries included in a target battery pack into a plurality of groups; determining a total power of each group corresponding to the plurality of groups, and a single battery power of the single batteries included in each group; determining an average power between groups of the plurality of groups based on the total power of each group corresponding to the plurality of groups, and the single battery power of the single batteries included in each group, and determining an average power within each group corresponding to the plurality of groups; and performing power equalization among the plurality of groups based on the average power between groups, and performing power equalization in the corresponding group based on the average power within each group corresponding to the plurality of groups. The application solves the technical problem of low efficiency of transferring the power of the single batteries due to long transfer time in the related art.

The invention relates to the technical field of battery management, and discloses a battery management method and system. A topological structure of a battery pack is reconstructed by introducing a first switch and a second switch, each battery pack is connected in parallel with a first equalization structure consisting of four third switches and an energy storage inductor, and the first switch, the second switch and the first equalization structure are controlled, so that electric quantity equalization between any two single batteries can be realized; a plurality of battery packs are connected in series, a bidirectional flyback converter is added, and the battery packs needing to be subjected to electric quantity equalization are used as input and output of the converter through the bidirectional flyback converter, so that energy is quickly transmitted between any battery packs, and direct equalization between any plurality of adjacent or non-adjacent battery packs is realized; meanwhile, equalization can be carried out when the battery pack does not work, the equalization efficiency of the battery pack is improved, and the problem of inconsistency of the battery pack is solved.

The invention relates to the technical field of battery equalization, in particular to a full-time equalization control method based on lithium ion battery real-time voltage difference estimation, which comprises the following steps of: setting an equalization trigger condition by combining full power end time, bus current, temperature of single batteries and voltage difference between the single batteries; after the equalization triggering condition is met, an equalization mode is selected, equalization is started according to an equalization duty ratio corresponding to the selected equalization mode, and the equalization duty ratio is controllably adjusted in the equalization process; and calculating the average voltage of the single batteries after the equalization is started, estimating the equalization target voltage in real time through the average voltage, and selecting the equalization target voltage for equalization. According to the method, the purpose of full-time equalization is achieved by estimating the static and dynamic voltage differences between the lithium ion batteries in real time, so that the problem that charging tail end equalization, discharging tail end equalization or static equalization cannot be balanced under the dynamic working condition is solved, and the equalization efficiency is improved.

The invention relates to an active equalization circuit and method for adjusting battery voltage difference in real time. The active equalization circuit comprises a battery pack, a voltage difference sampling module, a control module, a driving module, a switch management module and a plurality of carrying capacitors. In every two adjacent battery elements, the power output end of one battery element is connected with the first power input end of the switch management module, the first power output end of the switch management module is connected with the first end of the carrying capacitor, and the second end of the carrying capacitor is connected with the second power input end of the switch management module. The second power output end of the switch management module is connected with the power input end of the other battery element. And the carrying capacitor is used as an energy carrier, so that the mode of discharging excess energy through a resistor in the traditional passive equalization is avoided, the excess electric quantity of the battery is directly transferred to the battery needing to be supplemented, and the energy utilization rate is greatly improved through the design. The active and intelligent battery equalization is realized, and the design requirements of high efficiency, energy conservation and environmental protection are met.

The present invention discloses a battery balancing control method and device based on MPC, the method steps include: S1. constructing a predictive control model of battery cells; S2. acquiring the SOC value and voltage value of the single cell in real time, simulating and predicting the predictive control model based on the MPC method, solving the optimal balancing threshold and balancing center point of the predictive control model, and predicting the real-time transfer power of each single cell; S3. performing balancing control on the controlled battery group according to the optimal balancing threshold, the balancing center point and the predicted real-time transfer power of each single cell solved in real time. The present invention can realize balancing between battery cells, reduce the inconsistency between battery cells, and reduce the number of invalid charging and discharging between single cells, effectively improving the balancing efficiency.

The invention provides a medical oncology drainage adjusting device and method. The medical oncology drainage adjusting device comprises the following steps: determining drainage allowance of each drainage stage according to effusion drainage information in historical drainage data; carrying out distribution detection on the electrolyte in the tumor effusion based on the tortuosity and drainage speed information at the tumor effusion to obtain the distribution state of the electrolyte in each drainage stage, and further determining dispersion characteristics when the electrolyte is balanced according to the distribution state and the drainage allowance; determining a steady-state characteristic quantity of electrolyte in the tumor effusion based on the effusion change information, and further determining steady-state difference fluctuation through the steady-state characteristic quantity and the drainage allowance; the balance adjusting amount of the medical oncology drainage adjusting device is determined according to the steady-state difference fluctuation and dispersion characteristics, and then drainage balance adjustment is conducted on tumor effusion in the body of the target patient based on the balance adjusting amount of the medical oncology drainage adjusting device. According to the scheme, stage balance adjustment of the electrolyte in the tumor effusion can be achieved, so that the balance efficiency of medical oncology drainage is improved.

A nested counterweight moment balance built-in mechanical on-line dynamic balance device belongs to the field of on-line dynamic balance of overspeed spindles, and comprises a driving transmission mechanism arranged in an outer side driving cavity, the driving transmission mechanism comprises two direct current motors, the direct current motors are fixedly connected with couplings through speed reducers, the couplings are matched with inner gears, and the inner gears are connected with the outer side driving cavity. The inner gear is connected with the inner-layer and outer-layer counterweight support through the outer gear, the inner-layer and outer-layer counterweight support is connected with the dynamic balance weight, and the inner-layer and outer-layer counterweight support and the stepped mandrel form a nested structure and are matched through two groups of rolling bearings; the position of the balancing weight can be fed back in real time, the problem that the dynamic balancing head moment is unbalanced is solved, and the stability and precision of the balancing process are improved.

The invention relates to a battery equalization method and device, computer equipment, a storage medium and a program product, and is applied to the technical field of batteries. The method comprises the following steps: acquiring a voltage change curve of each battery cell in a battery module when the battery cells are charged to a cut-off state, and determining a first reference battery cell in the battery module from a plurality of battery cells in the battery module based on the voltage change curve of each battery cell; based on the voltage change curve of the first reference battery cell in the battery module, determining a first charge state difference between the first reference battery cell in the battery module and other battery cells in the battery module; under the condition that the number of the battery modules is multiple, for any two adjacent battery modules, determining a second charge state difference between the two adjacent battery modules; and based on the second state-of-charge difference between all adjacent battery modules and the first state-of-charge difference corresponding to each battery cell in each battery module, performing equalization processing on each battery cell in each battery module.

The embodiment of the invention provides a data balancing method and device, equipment and a storage medium, which can be applied to the technical field of computers, in the method, multi-round iterative data migration is performed in a server set until an iteration stop condition is met, and a data balancing result of the server set is obtained. Each round of iteration comprises the step of obtaining a target server set comprising an emigration server set and an immigration server set from the server sets. And obtaining the migration data volume of each emigration server based on the first total data volume of the target server set and the first data difference quantity between the reference data volume corresponding to each round of iteration of the server set. And migrating the data of the emigration servers to the immigration server set according to the migration data volume of each emigration server. According to the method, data is transferred from a server with a high capacity ratio to a server with a low capacity ratio in a multi-round iteration manner by utilizing a peak clipping and valley filling principle, so that the problem of unbalanced data storage is effectively solved, and the efficiency of data balance is improved.