559 results about "Residual charge" patented technology

The invention relates to the technical field of battery management, in particular to a battery replacement cabinet battery real-time monitoring and scheduling method, the health state of a battery is analyzed and evaluated according to a preset algorithm model, and the health state of the battery is evaluated by comparing a comprehensive health score, an internal resistance change rate and a capacity fading rate with corresponding threshold values; and determining a corresponding processing mode based on the evaluation result, including generating and sending abnormal alarm information to the operation and maintenance terminal, or executing an adjustable charging mode according to the state of residual electric quantity of the battery, or executing a protective charging mode according to the deterioration degree of the battery, the health state of the battery is actively evaluated to accurately identify an abnormal battery, for example, the electric quantity may be not low but potential safety hazards exist, in advance, so that targeted charging scheduling can be realized. According to the invention, real-time monitoring and active protection of the health and safety state of the battery are realized, so that the operation efficiency is improved on the premise of ensuring the safety.

The present invention relates to the technical field of battery recycling equipment, and in particular to a discharge device for recycling waste lithium batteries. The hoisting assembly includes winches arranged at intervals on a mounting frame, the ropes of the winches slide through the mounting frame, and the ends of the ropes of the winches are respectively connected to immersion frames, and the immersion frames are loaded with placement frames for placing batteries. Through the coordinated operation of the hoisting assembly, the loading and unloading assembly and the deployment assembly, differentiated discharge treatment of waste lithium batteries is achieved; by using the winch and the multi-stage telescopic cylinder in conjunction with the independent immersion frame and placement frame structure, targeted discharge can be performed on batteries with different remaining power conditions; at the same time, the loading and unloading assembly supports the independent transportation of batteries before and after discharge, providing guarantees for continuous and batch operations, and the deployment assembly can adjust the brine ratio in real time to ensure a consistent electrolyte environment during the discharge process, thereby improving the stability of the discharge effect and the resource recovery rate.

The invention discloses an energy storage monitoring method and system, electronic equipment and a storage medium, and relates to the technical field of energy storage. The method comprises the following steps: acquiring voltage data and temperature data of a plurality of different types of battery units; generating a voltage response curve of the corresponding battery unit based on each voltage data, and generating a temperature response curve of the corresponding battery unit based on each temperature data; dividing each battery unit into a plurality of battery packs with different charging and discharging characteristics according to each voltage response curve and each temperature response curve, and calculating the residual electric quantity value of each battery unit in each battery pack; in each battery pack, determining an electric quantity difference value between the battery units in combination with the residual electric quantity value of each battery unit, and taking each battery unit of which the electric quantity difference value is greater than an electric quantity threshold value as a target battery pair; and performing concurrent equalization adjustment on the power parameters of each target battery pair until the electric quantity difference value of each target battery pair is smaller than the electric quantity threshold value. By implementing the technical scheme provided by the invention, the overall energy storage efficiency can be improved.

The invention provides a robust two-way stacked electrostatic protection circuit, which comprises a two-way stacked electrostatic protection module and a floating charge discharge module, and is characterized in that the two-way stacked electrostatic protection module comprises at least one floating node, and the floating node can accumulate residual charges in the process of normal working of the circuit or electrical characteristic test characterization; the floating charge discharge module is composed of a state control module and a charge discharge module, and the state control module monitors the potential state of a floating node in real time and generates a control signal; the charge discharge module responds to the control signal to conduct and discharge charges accumulated by the floating node, the floating charge discharge module comprises an MOS transistor, the MOS transistor is connected with the first port through the state control module, a source electrode of the MOS transistor is connected with the floating node, and a drain electrode of the MOS transistor is connected with the second port. According to the series high-voltage ESD protection circuit, accumulated charges on the floating node in the series high-voltage ESD protection circuit can be discharged in time.

The invention relates to the technical field of power supply management, and discloses an intelligent management method and system for an uninterruptible power supply, and a storage medium. The method comprises the steps that the actual power of a load end is updated every first duration, and when a power supply end starts to supply power, the actual power is corrected based on the load volatility to obtain required power; starting at least one uninterruptible power supply based on the required power, so that the load utilization rate of the power supply end is within a standard range; defining the started uninterruptible power supply as a first power supply, obtaining the residual electric quantity and the electric quantity attenuation rate of the first power supply at intervals of second duration, and determining a high-risk power supply based on the residual electric quantity and the electric quantity attenuation rate; if the idle uninterruptible power supply exists in the power supply end, the idle uninterruptible power supply is online to replace the high-risk power supply, and otherwise, the load equipment is turned off; after the commercial power is recovered, the uninterruptible power supply in the power supply end is charged based on the charging priority, and sustainable balance between charging safety and the service life of equipment is achieved.

The invention relates to the technical field of charging pile power distribution, in particular to a new energy charging pile power distribution method and system for multiple charging guns, and the method specifically comprises the steps: carrying out the priority weight distribution based on time, and enabling a first-arrival user to preferentially enjoy higher charging power according to a first-arrival first-service principle; an electric vehicle demand characterization factor is calculated according to the electric vehicle residual electric quantity, the electric vehicle with low electric quantity and urgently needing to be charged obtains certain electric energy, and the charging efficiency is improved; determining an expected time allocation weight of each charging pile based on the power change during charging; a suppression factor is introduced based on a total output power change trend prediction result to deal with total output power change in advance; comprehensively analyzing to adjust the distribution power of the charging pile in real time; the waiting time of the user is reduced through dynamic allocation, and efficient utilization of total output power, improvement of user experience and optimization of operation management of the charging station are realized.

The invention discloses a control method of a PTC heater, a battery device, a vehicle and a storage medium, and the control method comprises the steps: controlling the heater to carry out gear switching to enter a preheating mode to heat the battery when the remaining electric quantity of the battery is lower than a first preset electric quantity and the current temperature of the battery is lower than a first preset temperature; when the battery enters the charging compensation mode, controlling the heater to carry out gear switching to cooperate with the battery to carry out charging compensation; when the remaining electric quantity of the battery is larger than or equal to second preset electric quantity, the heater is controlled to conduct gear switching to enter a maximum power mode to heat the battery, and the second preset electric quantity is larger than the first preset electric quantity. The heater can heat the battery when the battery is at the preset environment temperature such as low temperature, the performance of the battery and / or the heater is improved, the working mode of the heater is dynamically determined, and the working mode of the heater is dynamically switched, so that the heater heats the battery in the target working mode and / or cooperates with the battery for charging compensation.

The invention discloses a power control method and device for a power battery, a medium and a program product, and relates to the technical field of battery management, and the method comprises the steps: determining the reference discharge power of the power battery according to the current residual electric quantity and temperature of the power battery; calculating the real-time discharge power of the power battery according to the total voltage and the total current of the power battery; when the residual electric quantity is smaller than or equal to a preset electric quantity threshold value, monitoring the lowest single voltage of the power battery; and according to the real-time discharge power, the minimum monomer voltage and the reference discharge power, obtaining the actual allowable discharge power of the power battery. The precision of discharge power control and the smoothness of the vehicle are improved.

The invention belongs to the technical field of urban public transport management, and particularly relates to an electric public transport scheduling and charging scheduling method considering source-load double-side fluctuation. The objective of the invention is to solve the problems that a public transportation system has source-load double-side fluctuation due to the intermittency of existing source-side photovoltaic power generation and the randomness of load-side public transportation operation energy consumption, so that the charging demand and the power supply capacity in part of time periods are not matched, the operation task cannot be completed in time, and the energy storage utilization efficiency is low. The invention provides an electric bus scheduling and charging scheduling method considering source-load double-side fluctuation. The method comprises the steps of calculating bus battery remaining capacity based on an optimization time period; calculating the remaining capacity of the energy storage battery based on the remaining capacity of the bus battery; based on the bus battery remaining capacity and the energy storage battery remaining capacity, constructing a chance constraint planning model; and solving the opportunity constraint planning model to obtain an optimal feasible solution which comprises an electric bus scheduling and charging scheduling scheme.

The invention discloses a new energy vehicle battery health degree calculation method and device, and the method comprises the steps: merging a plurality of charging data segments of a vehicle into one piece of charging data based on a preset merging rule; the charging data comprises residual electric quantity, current and voltage corresponding to each time point; determining the distinguishing attribute of the charging data according to the type of the battery cell of the vehicle battery; the distinguishing attribute comprises voltage or residual electric quantity; determining a plurality of division intervals corresponding to the distinguishing attributes and the reliability weight of each division interval; constructing a sliding window based on the charging data, and obtaining a potential battery health sequence based on the reliability weight of the division interval corresponding to the distinguishing attribute of the charging data in the sliding window; and obtaining the battery health degree based on the potential battery health sequence. According to the method, the anti-interference capability of battery health degree calculation is effectively improved, the dependence on high-precision residual electric quantity data and complete full charge data is remarkably reduced, and finally, high-precision and high-robustness battery health degree evaluation is realized.

The invention relates to the technical field of medical health equipment, in particular to a temperature measurement method and device based on a rechargeable thermometer, a medium and equipment. The method comprises the following steps: determining a body temperature acquisition time interval; according to the acquisition time interval, acquiring body temperature data of the target user at each preset acquisition time point in the target time window to obtain a body temperature sequence of the target user; according to the body temperature sequence of the target user, the residual electric quantity value of the super-capacitor charging thermometer and a power consumption prediction model, obtaining predicted average power consumption corresponding to the key time window and the predicted highest body temperature of the target user; obtaining an updated acquisition time interval according to the predicted average power consumption corresponding to the key time window, the predicted highest body temperature of the target user and a preset dynamic control algorithm; and skipping to the step of collecting the body temperature sequence of the target user. The electric quantity of the super-capacitor charging thermometer is reasonably used, and the problem that power consumption is too fast due to long-time high-frequency measurement is solved.

The invention relates to the technical field of pulse load energy optimization control, in particular to a pulse type ultra-low power consumption energy management system based on a super capacitor, which comprises a pulse spectrum analysis unit, a capacitor bank dynamic tuning unit and a charge state compensation unit, a pulse spectrum analysis unit extracts a load pulse dominant frequency component through a window function weighting algorithm to generate a target frequency value, and a capacitor bank dynamic tuning unit inquires a mapping table according to the target frequency to adjust series-parallel connection combination of the super capacitors and injects a reverse reactance component to offset a resonant impedance difference value. And the charge state compensation unit predicts the residual charge quantity by using a Kalman filter, and triggers a charge redistribution strategy in a non-pulse period, thereby solving the problems of insufficient dynamic impedance matching and low charge balance efficiency in the traditional technology, realizing high-efficiency and low-consumption management of the energy of the super capacitor, improving the energy transmission efficiency, and reducing the energy consumption. And the endurance time of the equipment is prolonged.

The invention discloses a lithium ion battery with a thermal runaway prevention and control function and a preparation method, the lithium ion battery comprises a plurality of standard layers and barrier layers, the barrier layers are arranged between any two adjacent standard layers, and each barrier layer comprises a specially-made positive plate, a diaphragm plate and a specially-made negative plate. The content of the first conductive agent in the special positive plate is lower than that of the first conductive agent in the standard positive plate. And the content of the second conductive agent in the special negative plate is lower than that in the standard negative plate. When the temperature of the battery cell rises to the melting point of the diaphragm piece and the insulating film has broken holes, the specially-made positive and negative pole pieces are contacted, the internal resistance of the specially-made positive and negative pole pieces is controlled through the content of the conductive agent to adjust the short-circuit current, and the battery cell reduces the residual electric quantity through controllable self-discharge, so that the residual electric quantity in the battery cell is gently released, violent thermal runaway is avoided, and the service life of the battery cell is prolonged. And the purpose of thermal runaway prevention and control is achieved.

The invention discloses a new energy automobile starting sodium ion battery protection system and method, and belongs to the technical field of battery management. Whether a battery is in an extreme starting risk state or not is judged by obtaining a basic response parameter set B under the current temperature and the residual electric quantity; if the risk exists, a voltage recovery curve family M of similar working conditions is extracted from historical data, a voltage prediction model W is constructed, and the lowest voltage point Vmin in the starting process is predicted; determining a safe discharge current limit value Ilimit according to the Vmin, and generating a dynamic current limiting strategy L; executing a current limiting strategy L to control starting current input; when it is detected that the voltage rises and exceeds a set recovery threshold value, the current limiting strategy is quitted, and normal current output is recovered; the method can effectively reduce the starting failure risk of the sodium ion battery under extreme working conditions of low temperature, low electric quantity and the like, and improves the system safety and the starting success rate.

The present invention discloses a DC magnetic field testing device for a magnetic field coil, comprising a device main body, a display component provided on the front end surface of the device main body, a control button provided on the front end surface of the device main body, a charging port provided on the bottom of the device main body, a probe cable fixedly connected to the top of the device main body, a Hall probe fixedly connected to the other end of the probe cable, a rectangular block fixedly connected to the outer surface of the Hall probe, a protective tube fixedly connected to the right side surface of the device main body, a storage component fixedly connected to the back of the device main body, and a charging component provided on the bottom of the device main body; the DC magnetic field testing device for a magnetic field coil can more intuitively display the remaining power of the device by providing the display component, and can issue an alarm when the power is too low to remind the user to charge; the protective component provided can protect the Hall probe after use to prevent damage to the probe.

The present invention discloses an optimized energy allocation method and system for an electric vehicle and an electric vehicle. The method includes step (1) detecting remaining charge levels of a first super-capacitor and a second super-capacitor, determining whether the remaining charge levels of the first super-capacitor and the second super-capacitor are greater than a preset threshold value, and if so, proceeding to step (2); step (2) acquiring a topographic map of a road ahead by means of an electric horizon system, predicting whether there is a continuous slope ahead, and if so, proceeding to step (3); and step (3) according to a continuous slope value ahead, predicting a braking force allocation proportion when carrying out braking ahead, allocating current power outputs of the first super-capacitor and the second super-capacitor in advance according to the braking force allocation proportion, and returning to step (1).

The invention provides a VSG-based energy storage power station adaptive inertial support control method, system and device and a medium, and relates to the technical field of energy storage power station control. The method comprises the steps that power grid operation parameters and energy storage battery pack state parameters are collected, the power grid operation parameters comprise the power grid frequency and the frequency change rate, and the energy storage battery pack state parameters comprise the remaining electric quantity and the battery temperature; calculating frequency deviation according to the power grid frequency and the power grid rated frequency, judging the power grid disturbance level according to the frequency change rate and the frequency deviation, and judging the battery safety state according to the residual electric quantity and the battery temperature; determining a disturbance adaptation coefficient according to the power grid disturbance level, determining a battery state correction coefficient according to the battery safety state, and dynamically optimizing an inertia time constant and a damping coefficient of the VSG based on the disturbance adaptation coefficient and the battery state correction coefficient; based on the inertia time constant and the damping coefficient, basic inertia support power is calculated in combination with a VSG rotor motion equation, and the basic inertia support power and a frequency modulation component of the AGC instruction are subjected to cooperative processing to obtain a final power instruction; and issuing the final power instruction to the energy storage converter for execution.

The invention relates to the technical field of sensors, and discloses a capacitive touch detection circuit and method.The capacitive touch detection circuit comprises a charge compensation module, a voltage and current conversion module, an integrating capacitor, a quantization circuit module and a counter; the charge compensation module is used for performing charge and discharge compensation on the external touch capacitor and adjusting the charge quantity on the touch capacitor to be within a preset charge quantity range corresponding to the reference voltage; the voltage and current conversion module is used for converting residual charges on the touch capacitor compensated by the charge compensation module into current and outputting the current; the integrating capacitor is used for integrating the current to obtain an integrated voltage; the quantization circuit module is used for quantizing the integral voltage and controlling the integral voltage to be stabilized in a preset voltage range of the reference voltage; and the counter is used for counting the output of the quantization circuit module to obtain a digital code representing a touch capacitance value. According to the invention, the touch detection performance with high linearity, low power consumption, small area and high noise resistance can be realized.

The invention provides a parameter adjusting method and device of an energy storage unit, and energy storage control equipment and system, and relates to the technical field of transformer area power supply. The method comprises the following steps: acquiring output power of an energy storage unit at a plurality of moments in a preset time period, an equipment operation state and real-time residual electric quantity of the energy storage unit; according to the output power and the equipment operation state, calculating the net electric quantity exchanged between the energy storage unit and the transformer area distribution transformer in a preset time period; according to the net electric quantity and a preset residual electric quantity reference value of the energy storage unit, calculating a target residual electric quantity reference value of the energy storage unit; calculating a target reference voltage of the energy storage unit according to the target residual electric quantity reference value, the real-time residual electric quantity and the initial reference voltage; and controlling the energy storage unit to charge and discharge according to the real-time operation voltage and the target reference voltage of the energy storage unit so as to regulate and control the phase line voltage. According to the invention, the parameters of the energy storage unit can be automatically adjusted, and the automatic response capability and the scene adaptability are improved.

The invention relates to the field of chip electrostatic protection, in particular to a high-bandwidth flash memory chip ESD protection circuit optimization method and system. The method comprises the following steps: carrying out multi-point synchronous observation through a charge imaging module, and extracting ESD multi-step observation information; identifying a high density charge region based on the ESD multi-step observation information; defining a safe charge threshold value, performing charge safety evaluation on a high-density charge region, and entering a dynamic regulation and control mode; carrying out charge discharge path dynamic planning based on a dynamic regulation and control mode, and calculating real-time residual charge density; and detecting that the real-time residual charge density is lower than a safe charge threshold value, and completing the protection operation of the local bleeder circuit. The electrostatic discharge risk events higher than the safety threshold are quickly responded and efficiently processed, the safety of the chip circuit is improved, and the service life of the chip is prolonged.

The invention relates to the technical field of electronic timers, in particular to an environment self-adaption low-power-consumption management system and method for an electronic timer, and the system comprises an environment sensing array, a physical state evaluator, a dynamic power consumption strategy generator, a closed loop execution and calibration unit and a self-adaption compensator. According to the method, multi-dimensional environment parameters are dynamically collected, a coupling model representing the relation between frequency deviation and compensation power consumption is constructed, combined regulation and control parameters are generated through multi-target optimization by combining the residual electric quantity of equipment and a timing error accumulated value, hardware execution is driven, operation deviation is monitored in real time, and strategy self-adaptive iterative optimization is achieved through a feedback closed loop. According to the invention, the pain point that the precision and the power consumption of a traditional electronic timer are mutually restricted is effectively solved, and the equipment environment adaptive capability, the endurance time and the full life cycle operation stability are greatly improved.

An electric quantity balance control method includes: S1: obtaining remaining electric quantities of a plurality of energy storage devices; S2: calculating an average value of the remaining electric quantities of the plurality of energy storage devices; S3: subtracting the average value calculated in step S2 from the remaining electric quantity of each energy storage device to obtain a corresponding difference, and for each energy storage device, if the corresponding difference is greater than 0, increasing an output voltage of the energy storage device to increase its output power, otherwise if the corresponding difference is less than 0, reducing the output voltage of the energy storage device to decrease its output power. According to the energy storage device alternating current multi-phase system and the electric quantity balance control method therefor provided in the present invention, the problem of the overall endurance of the system being greatly shortened is effectively solved.

The invention provides a signal processing method of an image sensor, which comprises the following steps of: starting a transfer transistor by using a relatively low first starting voltage during LCG to read an image signal of the LCG, and starting the transfer transistor by using a relatively high second starting voltage during HCG to read an image signal of the HCG. Wherein the first turn-on voltage is smaller than the voltage for completely transferring the full well charge of the photodiode to the floating diffusion region under the LCG, so as to ensure that the charge in the photodiode is not completely emptied when the image signal of the LCG is read; the second turn-on voltage is greater than or equal to the voltage for completely transferring the residual charge of the photodiode to the floating diffusion region under the HCG, so that the charge in the photodiode can be completely transferred under low illumination. Compared with the prior art, the method can ensure that charges in the FD cannot exceed a readable range during LCG and HCG, read data distortion cannot be caused, the storage area does not need to be increased, the FD potential change amplitude is not too large during two times of charge transfer, noise can be reduced, the problem of transverse stripes of a lamp tube can be minimized, and the HDR image quality can be improved.

The invention discloses a boom operation control method and device and a medium. Relates to the field of vehicle control and solves the problem of over-discharge caused by large-current discharge when the capacity of a lead-acid battery is insufficient in the working process of a boom. According to the method, voltage fitting curves under different discharge currents are established, multi-stage electric quantity intervals are divided in advance, the action of the boom is limited according to the real-time electric quantity grade, for example, the arm folding speed or the climbing power is reduced, over-discharge under the large-current working condition can be effectively avoided, operation of the boom can be limited in advance in the working process due to the arrangement of the multiple intervals, and the working efficiency of the boom is improved. A large-current discharge state which cannot be supported by the current residual electric quantity is avoided, intervention is carried out in advance, and over-discharge is avoided; and meanwhile, more electric quantity can be stored in the battery by limiting the walking speed of the boom and the action of the boom, and the cruising ability of the battery is improved. Compared with a traditional scheme that only static voltage and a fixed preset threshold value are concerned to cause false shutdown and battery over-discharge, the method improves the utilization rate of battery power, and prolongs the service life of the battery.

An electrified vehicle includes a human-machine interface to enable towed vehicle mode and specify a desired traction battery charge upon arrival at a destination. A controller is programmed to vary charging rate of the traction battery while the electrified vehicle is being towed over a user-specified distance to the destination to obtain the user-specified target charge for the traction battery upon reaching the destination. The target charge may be entered as a percentage state of charge (SOC), a distance to empty (DTE), or Watt hours, and converted to net energy input required for the traction battery. The controller distributes the charging load over the entire distance to reduce the affect on the drivability and efficiency of the towing vehicle by varying regenerative braking of the electric machine(s) while being towed to provide a net energy needed to obtain the target charge upon reaching the destination.

The invention relates to the technical field of electrical equipment insulation tests, and discloses a medium-voltage cable variable-frequency resonance voltage-withstanding test system and a medium-voltage cable variable-frequency resonance voltage-withstanding test method. The method comprises the steps of configuring a test loop and setting related parameters, and presetting a target test voltage, test time, a system quality factor range, a local discharge capacity threshold and a current change rate threshold based on a cable model, a cable length, a laying environment temperature and an equivalent capacitance. And executing frequency scanning in a preset frequency range through an adaptive step length strategy, adjusting the step length according to the current response, identifying the resonant frequency and verifying the quality factor of the system. In the test process, the loop current change rate, the partial discharge capacity and the equipment temperature are monitored in real time, a protection mechanism is triggered according to abnormal characteristics, and insulation state diagnosis is completed. When the test is ended, voltage is reduced at a controllable rate, residual charges are dissipated, and a test report is automatically generated. The method improves the accuracy and safety of the test, and is suitable for various field conditions.

This utility model provides a transformer partial discharge testing device, mainly relating to the field of transformer technology. The device includes a housing and metal electrodes. The metal electrodes are slidably disposed on the top of the housing. A rectangular cylinder is fixedly disposed on the top of the housing. A support frame is slidably disposed inside the rectangular cylinder. A limiting block is hinged to the outside of the rectangular cylinder, and the limiting block abuts against the side of the support frame. An L-shaped fixing plate is fixedly disposed on the outside of the rectangular cylinder, and a DC solenoid valve is fixedly disposed on the L-shaped fixing plate. The end of the DC solenoid valve abuts against the limiting block. The advantages of this utility model are: after the test is completed or the monitoring system detects an abnormality, the metal electrodes can be quickly and safely separated from the transformer, effectively avoiding the risk of electric shock due to residual charge and greatly ensuring the safety of operators.

This suppresses power waste caused by discharging residual charge. [Solution] The emitter 10 of the distance measuring device 1 for measuring the distance to an object comprises a transmitting unit that outputs a transmission wave to irradiate the object, a capacitor 120 that is charged by a power supply and supplies current to the transmitting unit, a switching element 150 that controls the current flowing to the transmitting unit, a drive circuit that controls the switching element, and a control unit 180 that, after irradiating with a transmission wave, sends a control signal to the drive circuit to continuously irradiate with a transmission wave of an irradiable distance according to the residual charge of the capacitor 120.

To deliver a necessary amount of electric power at an appropriate timing to a construction site where an electric construction machine operates.SOLUTION: A power delivery system including a control device that creates a delivery plan for delivering a power storage device in which power is stored from a delivery facility of the power storage device to a construction site where an electric machine including an electric construction machine operates, the control device comprising: Wherein the control device receives a remaining amount of stored power of a battery that stores power for driving the electric machine at the construction site, calculates a predicted transition of the remaining amount of stored power of the battery based on the received remaining amount of stored power, calculates a time when power supply is required based on the predicted transition of the remaining amount of stored power, and calculates a power acceptable amount at the construction site at the time when power supply is required based on a battery capacity of the battery and the predicted transition of the remaining amount of stored power, and create a delivery plan for delivering the power storage device storing the power equal to or more than the acceptable amount to the construction site by the time when the power supply is required.SELECTED DRAWING: Figure 4

The embodiments of the present application disclose a control method, device, energy recovery device and medium for an energy recovery device, which belongs to the field of energy recovery technology. The energy recovery device includes a motor, a power battery and an energy consumption device, the energy consumption device includes at least one energy consumption resistor, and the control method of the energy recovery device includes: responding to the received motor control instruction, switching the state of the motor to the power generation state; obtaining the actual remaining power of the power battery, and the target remaining power of the power battery when the motor is in the power generation state; generating an energy consumption control instruction based on the actual remaining power and the target remaining power; adjusting the operating parameters of the energy consumption resistor in the energy consumption state based on the energy consumption control instruction; updating the operating parameters of the energy consumption resistor according to the surplus current of the energy recovery device and the feedback operating parameters of the energy consumption resistor. The dynamically adjusted operating parameters of the energy consumption resistor achieve precise control of the recovered power.