656 results about "Fan-in" patented technology

The invention discloses a fan operation real-time dynamic adjustment control method and system based on environmental data. The method comprises the steps that multi-dimensional dynamic parameters of the environment where a fan is located are collected in real time based on a distributed sensor network; constructing a dynamic coupling prediction model, inputting the dynamic coupling prediction model into a bidirectional verification module based on multi-dimensional dynamic parameters, and obtaining an environment state prediction matrix in a future time window; based on the environment state prediction matrix, a combined adjustment instruction set of the fan pitch angle, the yaw angle and the generator torque is obtained, and the instruction set comprises main strategy parameters and an emergency tolerance interval; based on an incremental learning mechanism, model parameters are dynamically updated according to the deviation between actual environment parameters and predicted values, and the updating period is adaptively adjusted along with the change of turbulence intensity. The method has the advantages that accurate prediction and optimal control of the fan in a complex environment are achieved, the limitation that a traditional data driving model lacks physical interpretability is broken through, and the running stability and efficiency of the fan are improved.

The invention provides a distributed data path combination equivalence verification method and a distributed server, and the method comprises the steps: carrying out the rewriting of two to-be-verified data path circuits, and obtaining two circuit description files with similar circuit structures; constructing a Miter circuit according to the circuit description file; random logic simulation is carried out on the Miter circuit to obtain internal potential equivalent nodes, and the internal potential equivalent nodes are stored in an equivalent node queue; selecting potential equivalent node pairs from the equivalent node queue, extracting fan-in cones of the potential equivalent node pairs, and constructing a sub miter circuit according to two groups of fan-in cones; selecting a verification mode according to the density degree of the XOR block in the sub-miter circuit, and verifying the sub-miter circuit; if verification succeeds, the corresponding potential equivalent nodes and the corresponding fan-in cones are combined, otherwise, other potential equivalent node pairs continue to be verified until verification of all potential equivalent nodes is completed; and the SAT solver is used for executing final equivalence verification and returning a verification result, so that the equivalence verification of the data path combination is efficiently realized.

The invention discloses a hybrid nonlinear floating fan hydrodynamic load coupling calculation method. The method comprises the steps of obtaining a velocity potential of a wave field in a computational domain through OceanWave3D numerical simulation (a wave field calculation model), and performing post-processing to obtain wave field data; dividing an instantaneous wet surface according to the six-degree-of-freedom motion, calculated based on an OpenFAST (floating fan calculation model), of the floating fan in each time step, and performing pressure integration to obtain a Front-Krylov force; updating the hydrostatic stiffness matrix according to the real-time position change of the buoyancy center of the fan, and calculating hydrostatic restoring force; linear radiation force and diffraction force are calculated through time domain convolution of frequency domain data, nonlinearity of the radiation force and the diffraction force is considered based on an instantaneous wetting volume change coefficient, and hydrodynamic load and structural motion response calculation in the current time step is completed after the OpenFAST is coupled. According to the method, coupling calculation between the open source code OpenFAST and OceanWave3D is achieved, and compared with commercial software at the present stage, the method is more accurate in wave load calculation under the extreme wave sea condition.

The invention provides a blade clearance value and imbalance real-time monitoring method and device based on an RTK technology, and relates to the technical field of wind generating set monitoring. The method comprises the following steps: acquiring position coordinates and elevation information of RTK monitoring equipment on the top of a fan cabin and position coordinates and elevation information of RTK monitoring equipment on three blades of a fan by adopting an RTK technology; analyzing the correlation among the clearance distance, the elevation difference and the horizontal distance in the rotating process of the three blades of the fan; according to the mutual relation of the clearance distance, the elevation difference and the horizontal distance, the clearance distance of the three blades of the fan in the rotating process is calculated through a sampling statistics mechanism method; and according to the clearance distance, the balance state among the three blades of the fan is obtained. According to the invention, the clearance distance of the blade at each rotation position and the balance state of the impeller can be monitored in real time.

The invention provides an anti-surge control method. The anti-surge control method comprises the following steps: acquiring historical data of a surge point; inputting the historical data of the surge points into the to-be-trained model to obtain an anti-surge model; based on the anti-surge model, determining an anti-surge line of the fan; the anti-surge line is generated by translating the abscissa of the surge line of the fan in the anti-surge coordinate system rightwards by a first preset unit and translating the ordinate downwards by the first preset unit; the real-time fan inlet flow and the real-time fan total energy head of the fan are obtained, and the real-time working condition point of the fan is determined; whether the real-time working condition point is located below an anti-surge line or not is judged, and if not, the opening degree of an anti-surge valve is adjusted to 100%; if yes, the anti-surge opening degree and the anti-surge valve opening time are determined based on the real-time working condition point, the anti-surge valve is opened according to the anti-surge valve opening time, the anti-surge valve is controlled to operate at the anti-surge opening degree, and the problem that the position area where the working condition point of the draught fan is located cannot be accurately and automatically adjusted at present is solved.

The invention discloses a fan operation abnormal vibration monitoring method and system based on multi-sensor fusion, and relates to the technical field of fan operation monitoring, and the method comprises the following steps: deploying a plurality of types of sensors on a fan, collecting the data of each sensor in real time, carrying out the synchronous processing of the sensor data through employing an IEEE1588 protocol, carrying out the preprocessing through combining wavelet denoising, and carrying out the monitoring of the abnormal vibration of the fan. Extracting feature data by using a principal component PCA combined independent component ICA analysis method; according to the method, multiple types of sensors are deployed on the fan, the actual conditions of the offshore wind field are considered, fine processing and feature extraction are carried out after multi-source signals are collected in real time, the abnormal vibration condition of the fan in the coastal or offshore wind field under the complex environment is accurately monitored and reliably recognized, and therefore the early abnormal features of fan operation can be captured in time; normal changes and real fault anomalies caused by environmental factors are effectively distinguished, and early discovery of faults is further realized.

The invention relates to the technical field of air conditioners, in particular to a defrosting system and method of a finned heat exchanger and an air conditioner outdoor unit. The defrosting system of the finned heat exchanger comprises a fan parameter monitoring module, a defrosting module and a control module, wherein the fan parameter monitoring module is configured to monitor the power variation of a fan in real time; and the data processing module is configured to analyze the power variation of the fan so as to judge whether the finned heat exchanger is frosted or not and perform defrosting operation. According to the scheme, the defect that it is difficult to accurately predict and respond to the actual frosting condition when an air conditioning system judges the frosting opportunity in the related technology is overcome, the frosting condition is accurately judged, the mistaken defrosting operation process is reduced, and then defrosting is conducted in time.

An electronic apparatus includes: a chassis; a heat generating element provided in the chassis; and a cooling module that is provided in the chassis and cools the heat generating element. The cooling module has: a heat diffusion member that absorbs and diffuses heat from the heat generating element; and a pair of fans that are placed with the heat diffusion member located therebetween, and have discharge ports provided only in side surfaces facing each other, thereby making it possible to discharge air toward the heat diffusion member. The chassis has an outer wall that extends along a placement direction of the pair of fans and has an exhaust port formed therein, and the exhaust port is positioned between the pair of fans in the case where the placement direction is taken as a reference.

The invention relates to a performance evaluation method for an ACE (Adaptive Cycle Engine) and electronic equipment. The method comprises the following steps: acquiring a to-be-evaluated ACE complete machine zero-dimensional simulation model, an adaptive fan high-fidelity simulation model, and working conditions and control rules of the to-be-evaluated ACE complete machine zero-dimensional simulation model; coupling the obtained models to obtain an ACE multi-dimensional coupling simulation model, and operating under the obtained working condition and control rule to obtain the ACE performance to be evaluated and the performance of each component in the ACE performance; according to the ACE multi-dimensional coupling simulation model, characteristic curves in an ACE complete machine zero-dimensional simulation model are adopted to represent characteristics of different ducts of a self-adaptive fan in the ACE complete machine zero-dimensional simulation model, and based on the difference of simulation results between the ACE complete machine zero-dimensional simulation model and the self-adaptive fan high-fidelity simulation model, the self-adaptive fan high-fidelity simulation model is obtained. The method is obtained after coupling is realized by continuously iteratively adjusting the scaling factor of the characteristic curve, so that the simulation precision of the self-adaptive fan is improved, and the overall performance evaluation accuracy is improved.

The invention belongs to the technical field of flue gas acid making, and particularly discloses an acid making fan outlet pressure soft measurement method based on LSTM (Long Short Term Memory), which comprises the following steps of: performing cleaning, down-sampling and normalization processing on fan inlet and outlet pressure original data; based on a time sequence analysis technology, extracting input features in the preprocessed data; an LSTM network is adopted to establish a soft measurement model, and long-term dependence characteristics in a time sequence are captured through a gating mechanism; performing training optimization on model hyper-parameters through grid search; and the model evaluates and predicts the performance by using the data of the test set, deploys the qualified model to an industrial control system, and predicts, regulates and controls the outlet pressure of the acid making fan in real time. According to the method, soft measurement and LSTM are combined, long-term dependency and dynamic change information in a time sequence are extracted, weighting processing is carried out on different scale features to improve prediction precision, real-time prediction of multi-step variables is achieved, and the method has the advantages of being high in prediction precision, high in timeliness and low in hardware cost.

The invention discloses an intelligent management device, method and equipment for a cable trench heat dissipation system, and belongs to the technical field of electric power facilities. The device comprises a working state identification module which is used for identifying whether the exhaust fan in the cable trench is in a working state or a stagnation state; the temperature change data acquisition module is used for acquiring action segments of the exhaust fans and acquiring temperature change data of the action segments corresponding to the exhaust fans; the cooling effect determination module is used for correspondingly inputting the working parameters of the exhaust fan and the temperature change data of the action segment into a preset algorithm model, and determining the cooling effect score of the exhaust fan for the action segment; and the exhaust fan updating module is used for determining the exhaust fan as the exhaust fan to be replaced under the condition that the value is lower than the set value, and determining parameter information of the replaced exhaust fan according to the working parameters of the exhaust fan. According to the technical scheme, heat dissipation intelligent management of the cable in the cable trench can be improved, the operation safety of the cable is improved, and the service life of the cable is prolonged.

The present invention belongs to the technical field of fan hoisting, and specifically relates to a high-power fan hoisting control system and method based on a narrow site in a low-temperature environment. By collecting environmental data of the construction site, including real-time temperature and parameters related to temperature such as humidity and wind speed, the present invention constructs a high-precision temperature prediction model to achieve accurate temperature prediction of the construction environment. Based on this temperature prediction, the present invention can not only dynamically adjust the hoisting power parameters, but also intelligently plan and optimize the hoisting path by avoiding low-temperature sensitive areas in the hoisting path, ensuring efficient operation under low-temperature and narrow-site conditions. This comprehensive management method significantly improves the safety and efficiency of operation under extreme environmental conditions, effectively avoiding the decline in power system performance and operation errors caused by low temperature.

Provided are a structure capable of protecting an air intake portion from entry of water droplets or the like, and an electronic device including the structure. The electronic device includes: a housing which is a box-shaped container having an open upper surface, configured to house an electronic component and a fan for blowing air downward, and provided with an air exhaust hole; an inner lid to be attachable and detachable at a position at which an opening of the housing is closed, and provided with an air intake hole upstream of the fan in an air-blowing direction; and an upper lid provided to overlap the inner lid, and facing, from above, a surface provided with the air intake hole with a gap therebetween.

The invention provides a method, device and equipment for determining the installation position of a fan. The method provided by the invention comprises the following steps: performing heat dissipation simulation on an initially designed server to obtain heat dissipation simulation data; according to the positions of a plurality of heat concentration areas in the heat dissipation simulation data, alternative design positions of a ventilation wall and alternative design positions of all fans in the ventilation wall are determined; according to the alternative design position of the ventilation wall, the installation range of the ventilation wall is determined, and according to the alternative design position of each fan in the ventilation wall, the installation range of each fan in the ventilation wall is determined; determining a plurality of heat dissipation schemes based on the installation range of the ventilation wall and the installation range of each fan in the ventilation wall; testing the heat dissipation performance of the server under each heat dissipation scheme; and determining a final heat dissipation scheme from the plurality of heat dissipation schemes. According to the method provided by the invention, the mounting position of the fan can be accurately determined.

The invention discloses an improved fan speed control optimization method, which belongs to the technical field of PID (Proportion Integration Differentiation) control optimization and comprises the specific steps of S1, constructing a fan speed control system; s2, improving a hyperbolic sine and cosine optimization algorithm; s3, performing parameter optimization on a PID controller module of the fan speed control system by using an improved hyperbolic sine and cosine optimization algorithm, and obtaining a group of optimal values of control parameters Kp, Ki and Kd under a set number of iterations; s4, inputting a group of optimal control parameters obtained through optimization in S3 into a PID controller module, and adjusting the speed of a fan to reach a target rotating speed by controlling a motor driving module; the PID controller parameters of the fan speed control system are optimized through the improved hyperbolic sine and cosine optimization algorithm, so that the control precision and robustness of the system are improved, and the adaptive capacity of the fan in different controlled scenes is enhanced.

The invention discloses a multi-fan operation system and a self-adaptive control method and device. The method comprises the steps that operation state data of fans are collected in real time through a sensor assembly; if the data fluctuation amplitude in the operation state data is greater than a first preset threshold value, performing Kalman filtering processing on the operation state data to obtain first prediction data; if the data fluctuation amplitude in the first prediction data is greater than a second preset threshold value, inputting the first prediction data into the radial basis function network model to obtain second prediction data; and the second prediction data are sent to a PID controller, PID controller parameters are adjusted through a particle swarm algorithm, and the target rotating speed in the fan running process is obtained. Through integration of the Kalman filtering technology radial basis function network model and the PID controller, accurate state estimation, dynamic modeling prediction and real-time adaptive control of the multi-fan system can be realized, complex working conditions such as wind speed and load fluctuation can be effectively handled, and the overall performance of the system is improved.

A fan coil for a single unit in a multi-unit building has hot and cold riser stacks. Heating and cooling closed loop fluid flow paths thermally connect the fan coil in thermal communication with the hot and cold riser stacks, respectively. The fan coil has a housing that houses heating and cooling heat exchangers in thermal communication with the heating and cooling closed loop fluid flow paths, respectively. A fan in the housing may draw ambient air through the fan coil. In a heating mode, the air collects heat from the heating heat exchanger and in a cooling mode, the air is cooled by the cooling heat exchanger. The heated or cooled air exits the fan coil and enters a room.

The invention provides a logic code quality inspection method and device, a server and a storage medium, and is applied to the technical field of computers. According to the method, after logic synthesis of an integrated circuit is completed, starting point registers and end point registers of all time sequence paths in the integrated circuit are extracted; counting the number of rear-stage fan-out registers and the number of front-stage fan-in registers of each register, obtaining a register number threshold value corresponding to the integrated circuit, and if the number of the front-stage fan-in registers or the number of the rear-stage fan-out registers corresponding to any register is larger than the register number threshold value, determining that the logic code of the integrated circuit is abnormal. Compared with the prior art in which the quality of the logic code is detected after layout and wiring are completed, the method provided by the invention can detect the quality of the code after logic synthesis is completed, can complete the quality detection of the logic code as early as possible, effectively avoids the situation that the logic code is found to be abnormal after all physical designs are completed, and improves the design efficiency.

A system uses a trained machine learning model to predict a likelihood of failure of telecommunications network equipment housed in equipment boxes. The model can be configured to receive, as input, (1) air temperature in an environment proximate to the equipment and (2) attributes of fans in the equipment boxes. The system monitors a set of equipment boxes using the model by processing the received measurements of air temperature and attributes of fans to predict likelihoods of failure of the monitored equipment boxes. Network performance associated with equipment housed in the monitored equipment boxes is observed. Upon detecting the observed network performance of telecommunications network equipment within a target equipment box is below a performance threshold and detecting the predicted likelihood of failure of the target equipment box is below a failure threshold, the model is retrained based on an error value associated with the predicted likelihood of failure.

The invention provides a heat dissipation control method and electronic equipment, and relates to the technical field of computers. The method comprises the following steps: based on respective initial weights and first target rotating speeds of a plurality of target fans for a first component in the electronic equipment, controlling the plurality of target fans to dissipate heat of the first component, so that the temperature of the first component is in a target range. Performing at least one reduction processing on the first initial weight of the at least one target fan, and determining a first total power consumption of the plurality of target fans in the predetermined time period after the previous reduction processing and a second total power consumption of the plurality of target fans in the predetermined time period after the current reduction processing; and under the condition that the second total power consumption is greater than or equal to the first total power consumption, taking the weights of the plurality of target fans determined after the previous reduction processing as first target weights of the plurality of target fans, so that under the condition that the plurality of target fans are controlled to operate based on the first target weights and the first target rotating speed, the second total power consumption is greater than or equal to the first total power consumption. The temperature of the first component is within a target range.

The invention relates to the field of wind power plant control systems, and particularly discloses a new energy electric field frequency modulation control system, which comprises a data acquisition module used for acquiring operation data of each fan in a wind power plant in real time and acquiring power grid frequency information; the fan characteristic analysis module is used for analyzing operation characteristics of each fan under different working conditions and establishing a fan power-wind speed model and a comprehensive operation characteristic model; and the power calculation and distribution module is used for calculating frequency modulation power required by the wind power plant according to the power grid frequency deviation and the operation characteristics of the fan and distributing the frequency modulation power by adopting an optimization algorithm. According to the new energy electric field frequency modulation control system, through accurate fan characteristic modeling and comprehensive consideration of various factors, a more accurate fan nonlinear operation characteristic model is established, the accuracy of power calculation is greatly improved, and frequency modulation power calculation errors caused by complex fan operation characteristics are effectively reduced.

The invention discloses a control device of a fan and the fan, and relates to the field of fan control, a main control circuit adjusts a control strategy when the fan is controlled according to working environment data of the fan acquired by a monitoring module, so that the running state of the fan is adjusted to the optimal running state; the operation data and the working environment data of the draught fan are transmitted to the wireless transmission module, the main control circuit is powered by the first power source, the wireless transmission module is independently powered by the second power source, and therefore no matter whether the main control circuit is powered off or not, the mobile terminal can obtain corresponding data from the wireless transmission module at any time and conduct fault recognition. The main control circuit adjusts the running state of the fan in different working environments, so that the fan runs in the optimal running state, and running data and working environment data of the fan can be stored by the wireless transmission module. Therefore, a user can obtain corresponding data through the mobile terminal at any time and timely and accurately maintain the fan when the fan breaks down.

The invention provides a server heat dissipation regulation and control method and device, belongs to the technical field of server heat dissipation, and aims to solve the problems that the rotating speed of a fan is excessively increased due to a heat dissipation mode proposed in the related technology, and the temperature of an external equipment expansion card is accumulated and overheated in the initial process. The method comprises the following steps: before target firmware is started, determining a first target regulation and control parameter according to environment temperature and temperature information of an external equipment expansion card; the first target regulation and control parameter is used for regulating and controlling the rotating speed of a fan before target firmware is started; after the target firmware is started, matching first identification information corresponding to each piece of temperature information with second identification information corresponding to each piece of slot information, and determining a second target regulation and control parameter of each fan in the server at least according to an identification inconsistency condition; the second target regulation and control parameter is used for regulating and controlling the rotating speed of the fan after the target firmware is started.

The invention discloses a fan control method and system and a computer program product, and relates to the technical field of fan control, and the fan control method comprises the following steps: converting fan control information of a control command for N fans into a control command in a preset format, and converting the control command into a protocol signal conforming to a preset communication protocol, therefore, the fans can understand and respond to the control command, protocol signals are sent to the N fans through the clock signal line and the N data signal lines, return data of the N fans are obtained, the multiple fans are controlled at the same time through one control command and one communication module, and therefore the control efficiency is improved. The technical problems that when data transmission is carried out between the fan controller and the multiple fans in the air cooling radiator, the resource consumption of the fan controller is large, and the overall performance of the heat dissipation system is affected can be solved, and the technical effects that the hardware cost is reduced, resource configuration is optimized, and the overall performance of the heat dissipation control system is improved are achieved.

The embodiment of the invention provides a fan abnormal temperature monitoring method and device, service equipment and a storage medium. The method comprises the following steps: receiving operation data of a plurality of fans sent by data acquisition equipment; sliding and traversing each group of operation data of each fan in the evaluation period according to preset time window parameters; in the traversing process, if it is judged that all the draught fans are in the normal power generation state, the average value of the operation data of all the draught fans in the current preset time window parameters is obtained, so that multiple average values corresponding to each set of operation data of all the draught fans in the evaluation period are obtained; according to the multiple average values corresponding to each set of operation data and different operation powers, the operation data average values of all the draught fans under the different operation powers are determined; and inputting the average value of the operation data of each fan in the plurality of fans under different operation powers into a pre-constructed clustering analysis model to output abnormal temperature data. The method is used for achieving the effect of improving the abnormal temperature identification precision.

The invention relates to the technical field of semiconductor chips, in particular to a buffer insertion method and a storage medium. The method comprises the following steps: acquiring position information of a fan-out point and all corresponding fan-in points of the integrated circuit, and calculating a Manhattan distance between the fan-out point and each fan-in point based on the position information; calculating a corresponding first delay between the fan-out point and the fan-in point when the buffer is not placed and a corresponding second delay after the buffer is placed based on a nonlinear model; obtaining a corresponding buffer insertion candidate position based on the first delay, the second delay and the Manhattan distance between the corresponding fan-out point and the fan-in point; and carrying out calculation by taking the buffer insertion candidate position as a candidate point of a Van Ginneken algorithm to obtain a buffer placement scheme. The problems of inaccurate long conductive path delay estimation and inaccurate calculation of a buffer insertion scheme are solved.

The invention relates to the technical field of fan performance testing, in particular to an airborne fan product performance test bench, which is characterized in that a circulating pipeline is connected with a regulating valve, an upstream static pressure sensor and a downstream static pressure sensor which are respectively arranged at two sides of an installation position, a total pressure sensor is arranged at the downstream of the installation position, and a downstream temperature sensor is arranged at the downstream of the installation position; the control and display cabinet is opposite to the downstream static pressure sensor and is connected with the upstream static pressure sensor, the downstream static pressure sensor, the total pressure sensor and the downstream temperature sensor. The volume flow of the tested fan is obtained; according to the corresponding relation between the multiple sets of pressure differences and the volume flow, the fitting curve of the pressure differences and the volume flow of the tested fan in the current environment is obtained through fitting, the aerodynamic performance of the fan can be effectively evaluated, and therefore the design is optimized, and the working efficiency of the fan is improved.

The invention relates to an information-missing-oriented super-large-scale integrated circuit security design detection method, and belongs to the field of hardware Trojan horse detection. The method comprises the following steps: analyzing a gate-level netlist design file of the super-large-scale integrated circuit with missing information, creating directed graph representation, performing feature representation coding on logic gate nodes, and constructing circuit directed graph data; performing structural reasoning on the directed graph data by using a graph variation auto-encoder GraphVAE, complementing a circuit structure with information loss by using a decoder, and constructing complemented circuit directed graph data; performing logic gate type, fan-in and fan-out quantity, betweenness centrality and neighborhood type distribution calculation on the complemented data, and combining and splicing the complemented data into circuit gate characteristics; and constructing a graph neural network model GNN, further extracting deep-level features through graph convolution operation, and performing reasoning training by adopting a multi-layer perceptron to realize hardware Trojan classification. According to the method, the hardware Trojan of the gate-level netlist under the condition of information loss can be effectively detected.

The utility model discloses fan dispensing inspection and magnetic ring assembly equipment which comprises a control module and a lower rack, the pushing mechanism, the dispensing mechanism, the visual camera inspection mechanism, the module carrying mechanism, the grabbing and moving mechanism, the tape clip automatic push-out mechanism, the automatic tape winding mechanism, the tape assembling and pressing mechanism, the discharging mechanism and the control module are in circuit connection with the control module. The visual camera inspection mechanism is used for detecting the dispensing condition and feeding back the dispensing condition to the control module, so that the production efficiency is greatly improved and the reject ratio is reduced; the equipment adopts an automatic assembly operation mode, so that the assembly precision is greatly improved, the dynamic balance is very stable, the noise of the cooling fan in the rotating process is reduced, and the service life is also greatly prolonged; by replacing the positioning carriers of the products, the products of various specifications can be compatible at the same time, and the products are convenient and fast to replace and produce; the labor is reduced, the yield is increased, and the product quality is improved.

The invention provides an energy storage system fan management method, device and equipment and a medium, and relates to the technical field of air cooling energy storage. In an existing air-cooled energy storage system, heat dissipation is mainly conducted through a fan, it is particularly important to formulate a proper fan management method, most of existing fan management methods are controlled through a fixed threshold value, the fan management methods excessively depend on temperature feedback, and if the temperature repeatedly jumps at the threshold value critical point, the fan management method cannot work normally. The fan can be started and stopped repeatedly in a short time, and the service life of the fan is shortened. The method comprises the following steps: firstly, acquiring the cell temperature and temperature rise rate of a battery pack in real time, and setting a starting mark for a fan needing to be started; the starting sequence of the fans is sequenced according to the starting marks, the maximum number of the fans allowed to be started at the same time is set, and the fans are started in sequence; and judging whether the battery cell temperature of the battery pack is smaller than a closing threshold, and if the battery cell temperature is smaller than the closing threshold, closing the fan of the corresponding battery pack. The fan management method is easy to implement, low in energy consumption and good in cooling effect.