1064 results about "Charge voltage" patented technology

The invention discloses a control system for lithium battery power management, and relates to the field of lithium battery control, and the system comprises a voltage input module which is used for externally connecting voltage and supplying power to a battery power supply module and a time delay module; the battery power supply module is used for charging the battery; receiving the battery voltage information, and adjusting the voltage output to the battery according to the battery voltage; the battery module is used for a battery to store electric energy; compared with the prior art, the system has the beneficial effects that the output voltage of the battery power supply module is adjusted through the feedback module, the output voltage of the battery power supply module is relatively large at the beginning, and the charging voltage is reduced along with the increase of the battery voltage, so that a quick charging effect is constructed; whether battery charging is abnormal or not is detected through the time delay module and the charging fault detection module, the battery power supply module is adjusted to perform constant-voltage charging when charging is abnormal, and the battery charging effect is guaranteed.

A system detects degradation of battery health due to fast-charging and controls charging of the battery and / or provides indications of battery health while fast-charging. The system includes remove a battery charging circuit that controls a charging voltage waveform to supply charging current to a battery and a detection circuit that monitors a rate of change of the charging current and controls the charging voltage waveform responsive to an output of the detection circuit.

The invention relates to a battery charging optimization method and device, a vehicle and a storage medium. The method comprises the steps of obtaining a current battery health value, a battery nominal capacity, a battery theoretical cut-off charging voltage and a current user endurance demand based on a battery charging demand; determining a target charging electric quantity based on the current user endurance demand, the battery nominal capacity and the current battery health value, and determining a target charging cut-off voltage based on the battery theoretical cut-off charging voltage; and generating a charging optimization strategy according to the target charging electric quantity and the target charging cut-off voltage, and charging the battery by using the charging optimization strategy. Therefore, the charging amount and the charging cut-off voltage are properly reduced on the basis of the battery health degree, the battery temperature and the vehicle using requirement of a user, and the problem that the cycle life of the battery is seriously shortened due to the fact that the battery is charged according to fixed charging parameters and the actual aging state of the battery is not considered in the prior art is solved; and the battery capacity fading rate can be reduced on the premise of meeting the vehicle use requirement of a user.

The invention provides an intelligent charging system and method based on illumination intensity adaptive adjustment. The intelligent charging system and method are applied to a photovoltaic energy storage system comprising a photovoltaic cell, a DC-DC converter, a storage battery charging mode control module and a storage battery. The method comprises the following steps: firstly, acquiring current illumination intensity, an incident light angle and a working environment temperature, and sending the current illumination intensity, the incident light angle and the working environment temperature to a photovoltaic cell and storage battery charging mode control module; the photovoltaic cell outputs corresponding voltage and current based on the parameters and a temperature compensation mechanism; and the storage battery charging mode control module converts the output of the photovoltaic battery into charging voltage and current for the storage battery, and dynamically determines a constant-voltage or constant-current charging mode in combination with the illumination intensity, the environment temperature, the incident light angle and the charging parameters, so that the self-adaptive charging of the storage battery is realized. Through multi-parameter cooperative adjustment, the charging mode is accurately matched with the environment condition and the storage battery state, and the charging efficiency and the system stability can be improved.

The invention discloses a battery charging and discharging power self-regulation control circuit, which relates to the technical field of battery control, and comprises a power supply module, a micro-control module, a voltage sampling and comparison module, a battery charging and discharging power self-regulation control module, a battery charging and discharging power self-regulation control module, a battery charging and discharging power self-regulation control module and a battery charging and discharging power self-regulation control module, the power regulation module compensates the direct-current electric energy, the battery module stores energy, the power regulation module and the direct-current electric energy are superposed and supply power to the battery module, during the discharging period, according to the voltage comparison condition, the power regulation module carries out voltage compensation processing on the battery module, and the battery module directly supplies power to the discharging module; and the power regulation module performs voltage balance control on the battery module. The battery charging and discharging power self-adjusting control circuit can prolong the service life of the battery, improve the charging and discharging efficiency, reduce the electric energy loss of the power adjusting module, improve the energy utilization rate and provide higher charging voltage.

The invention relates to a semiconductor device and a method of operating the same. A memory device includes a bit line control circuit and a row decoder. The bit line control circuit applies a verify pre-charge voltage to a program prohibition bit line after a program pulse period, the program prohibition bit line holding the program prohibition voltage during the program pulse period. The row decoder forms a channel in a string coupled between a program-prohibition bit line and a source line. A program prohibition voltage of the program prohibition bit line is discharged to the verification pre-charge voltage through the channel.

The invention relates to the technical field of lithium battery management, and discloses an intelligent charging optimization control method for a lithium battery pack, and the method comprises the steps: S1, monitoring the multi-dimensional parameters of the lithium battery pack in real time, including the single voltage, the battery temperature, the environment temperature and the current charging current; s2, calculating the health state and the current charging efficiency of the battery pack based on the monitoring parameters; s3, dynamically generating an optimal charging curve according to the state of the battery pack, wherein the optimal charging curve comprises an adjustment strategy of charging current and charging voltage; s4, implementing multi-stage adaptive charging control, including a pre-charging stage, a constant-current charging stage and a constant-voltage charging stage; and S5, evaluating the safety state of the battery in real time in the charging process, wherein the safety state comprises thermal runaway risk and overcharge risk early warning. By monitoring the multi-dimensional parameters of the lithium battery pack in real time, comprehensive sensing of the battery state is realized, the problem of single monitoring parameter of a traditional method is solved, and a data basis is provided for intelligent charging control.

The invention belongs to the technical field of display driving, and particularly relates to a gate driving unit, a gate driving circuit, a compensation method and a display panel, and the gate driving unit comprises a detection module which is used for detecting actual electrical parameters on a driving control node in a detection stage, the external control device outputs a compensation signal according to a comparison result of the actual electrical parameter and a preset reference range; or / and a compensation module which is configured to be connected with the external control device, the output end of the pre-charging module and the driving control node, and is used for responding to a compensation signal output by the external control device, compensating the pre-charging voltage output by the pre-charging module and then outputting the pre-charging voltage to the driving control node; through real-time comprehensive detection and dynamic cooperative compensation, the influence of threshold voltage drift of the pre-charge transistor and the output transistor on the driving control node is actively counteracted, and the output stability of the gate driving unit is improved.

The invention relates to the field of switching power supply management integrated circuits, in particular to a self-adaptive conduction time generating circuit for a BUCK type DC-DC converter, which comprises a charging circuit (1) and a sampling circuit (2), and is characterized in that the charging circuit (1) generates charging current in direct proportion to input voltage through a charging capacitor (C1) and a comparator (OP2), and charges the C1 to obtain first charging voltage; the sampling circuit (2) samples and filters the voltage of the switch node (SW), and outputs a first sampling voltage in direct proportion to the output voltage; and the comparator (OP2) compares the first charging voltage with the first sampling voltage, and outputs a turn-off signal to control the upper power tube to be turned off when the first charging voltage and the first sampling voltage are equal, so that the self-adaptive turn-on time is obtained. By dynamically adjusting the conduction time, the electromagnetic interference in the traditional constant conduction time control is effectively suppressed, the noise immunity and reliability of the system are improved, and meanwhile, the method has the advantages of quick response and high efficiency.

An electrochemical impedance spectroscopy prediction method of an echelon utilization battery comprises the following steps that an echelon utilization battery data set is collected and preprocessed, and the data set comprises charging curve data and electrochemical impedance spectroscopy data under the corresponding cycle index; generating charging voltage-time data according to the charging curve data; constructing an attention model for representing a mapping relationship between the charging voltage-time data and the electrochemical impedance spectroscopy data; the attention model comprises a bidirectional LSTM encoder and an LSTM decoder; the LSTM decoder comprises an attention module which introduces an aging factor weight matrix and is used for dynamically adjusting attention weights of different aging states according to the number of cycles; training an attention model by using the preprocessed echelon utilization battery data set; and predicting the electrochemical impedance spectrum of the echelon utilization battery by using the trained attention model. According to the method, efficient and accurate EIS prediction can be realized without traditional EIS test equipment, and support is provided for echelon battery screening, health monitoring and safety early warning.

Disclosed is a multi-port charger capable of charging a higher-voltage battery by boosting low DC charging voltage using an on-board charger (OBC) installed in a vehicle without adding a separate part or device and capable of being used for various applications, such as V2G and V2L, in addition to charging.

The invention belongs to the technical field of lithium-carbon dioxide batteries, and particularly relates to a lithium-carbon dioxide battery positive electrode catalyst, a preparation method and a lithium-carbon dioxide battery. Comprising the following steps: taking iron, cobalt, nickel and copper as templates, respectively grinding and mixing with 1, 2, 4, 5,-tetracyanobenzene, sintering under a vacuum condition, respectively coordinating the 1, 2, 4, 5,-tetracyanobenzene with metal ions to form polymer monomers, and polymerizing the polymer monomers to form iron polyphthalocyanine, thereby obtaining the lithium-carbon dioxide battery positive electrode catalyst. The iron polyphthalocyanine is adopted as the positive electrode catalyst of the lithium-carbon dioxide battery, so that the generation of lithium oxalate is realized, the discharge voltage is improved to be higher than a theoretical value 3.01 V, the charging voltage is reduced, and the energy efficiency of the battery is improved.

The invention discloses a charging adaptation device, a charging method of an electric two-wheeled vehicle and a charging system, and an automobile direct current charging pile charges the electric two-wheeled vehicle through the charging adaptation device. The charging adaptation device comprises a control module and a power module. The control module is used for generating a first voltage according to an auxiliary power supply voltage provided by the automobile direct-current charging pile and transmitting the first voltage to the automobile direct-current charging pile; the automobile direct current charging pile outputs charging voltage to the power module according to the first voltage, and the power module is used for outputting second voltage to a battery of the electric two-wheeled vehicle according to the charging voltage so as to charge the battery of the electric two-wheeled vehicle; the control module is also used for controlling the output of the power module according to the state parameters of the battery detected by the battery management system. According to the invention, the electric two-wheeled vehicle can be directly connected to the automobile direct current charging pile for charging.

The invention provides a lithium ion battery rapid charging control method and related equipment, and relates to the technical field of battery charging control, and the method comprises the steps: building a state vector based on an acquired external measurable signal and an internal state of a target lithium ion battery; simulating the target lithium ion battery through a constant-current charging experiment or a high-fidelity single-particle model, recording the charging cut-off voltage when the target lithium ion battery reaches the target charge state in different health states, and obtaining the maximum allowable charging voltage; designing a multi-target reward function by taking the maximum charging voltage as a constraint condition, and calculating a feedback value under the current state vector according to the multi-target reward function; inputting the state vector into a reinforcement learning agent to output continuous actions, and optimizing the reinforcement learning agent by using a feedback value under the current state vector to obtain an optimal charging control strategy of the target lithium ion battery; and rapid charging is realized on the premise of ensuring safety and prolonging the service life.

The invention relates to the technical field of electric vehicle charging control, and discloses a charging pile power regulation and control method and device, electronic equipment and a storage medium. The method comprises the following steps of: monitoring multi-dimensional time sequence data such as charging voltage, current and battery temperature in real time, performing state segmentation, and calculating the similarity between a data sequence of each stage and a standard charging template so as to accurately screen out a stable charging state stage. And extracting a power adjustment amount based on the time sequence characteristic and the fluctuation mode of the stage, fusing the adjustment amount of the environment temperature, the equipment load parameter and the charging power, and dynamically generating a power switching rule by using a fuzzy logic controller. And finally, smooth switching and cyclic adjustment of the power levels of the charging piles are realized according to the rule. According to the method, the accuracy and the anti-interference capability of charging state identification are improved, and the adaptability and the collaborative optimization capability of power regulation to a complex environment and a power grid condition are enhanced, so that the charging efficiency and the power grid stability are both considered on the premise of ensuring the safety of the battery.

A method includes receiving an indication of a charging current received at an on-board charging circuit of a vehicle from a source having a charging voltage. The on-board charging circuit includes a multi-phase traction motor, an inverter electrically coupled to the multi-phase traction motor and including an upper set of switching elements and a lower set of switching elements, and an energy storage device (ESD) electrically coupled to the inverter and having a storage voltage. The method includes determining whether the charging voltage is greater than or equal to the storage voltage. When the charging voltage is greater than or equal to the storage voltage, the method includes instructing at least one switching element in the upper set to operate in an on state and all of the switching elements in the lower set in an off state to cause fast charging of the ESD using the charging current.

A power supply apparatus may include a charging circuit configured to receive an external voltage and to generate a charging voltage by charging and discharging energy by switching according to a level of the charging voltage; an auxiliary power circuit configured to store an electric charge using the charging voltage; and a health monitoring circuit configured to determine a charging health state of the auxiliary power circuit by counting a number of switchings of the charging circuit during an interval in which the charging voltage rises to a first level from a second level, the determined charging health state being based on the number of switchings.

The invention discloses a double-branch lithium battery health estimation method based on multi-source feature fusion. The method comprises the steps that key operation data in the charging and discharging process of a lithium battery are collected through a battery management system or a test platform; carrying out multi-source health factor extraction on the collected key operation data of the lithium battery; performing data preprocessing on the extracted multi-source health factors; searching an optimal section in a reasonable range of the charging voltage by using a particle swarm optimization algorithm improved based on a quantum mechanics principle; in the determined optimal voltage section, the corresponding multi-source characteristic quantity is trained, a parallel double-branch network (CMNN) is established, parameters are optimized through a back propagation algorithm, and a QPSO-CMNN lithium battery state estimation model is obtained; according to the method, the optimal voltage section is searched by using the QPSO, the method adapts to actual data missing and actual use characteristics of a user battery, and the method has higher SOH prediction precision and robustness.

The invention relates to the technical field of power supply, and discloses a humanoid robot modular distributed power supply system which comprises a power supply battery pack, a power management distribution board and a plurality of power utilization modules. The power utilization module at least comprises a control computing power unit, a sensing system, an upper limb joint module, a lower limb joint module and other joint modules; the power management distribution board is electrically connected with the power supply battery pack and each power utilization module. The power management distribution board comprises an MCU control unit, a DCDC power supply unit, a soft start unit, a high-power output unit and a voltage and current detection unit. Through a modular distributed power-on strategy and in combination with soft start pre-charging, voltage and current real-time detection and a regenerative braking absorption unit, voltage and current peaks generated at the moment of power-on of the capacitive high-power load are remarkably suppressed, the risk that a power device is damaged due to overvoltage and overcurrent impact is fundamentally avoided, and the reliability of the power device is improved. And the system reliability and the service life are greatly improved.

The invention discloses a charging voltage control method and system for a capacitive energy storage welding machine, and the method comprises the steps: monitoring the voltage, current and temperature of a capacitor in real time in a charging process, and obtaining data through a sensor, and inputting the data into a controller; the controller dynamically adjusts the charging voltage according to the real-time feedback, and calculates and adjusts the power output by adopting a self-adaptive algorithm; if the temperature of the capacitor reaches the set threshold value, the charging voltage is automatically adjusted or the charging rate is reduced, and the charging voltage is adjusted according to the welding load change; the upper limit of the charging voltage and the charging time are dynamically adjusted according to the working state of the capacitor through an optimization algorithm, so that the capacitor is ensured to operate in a safe interval; the system combines welding parameters, dynamically optimizes charging voltage and current output, and ensures that the charging process is stable and efficient.

To provide a redox flow battery system capable of improving the efficiency thereof.SOLUTION: A redox flow battery system includes a charging section 2, a discharging section 3 and a storage section 4 storing an electrolyte. The charging section includes at least one charging cell stack and a charging side power conditioner. The discharging section includes: at least one discharging cell stack where at least two discharging cells of a plurality of discharging cells are electrically connected in series; and a discharging side power conditioner electrically connected to the at least one discharging cell stack. The charging side power conditioner has such characteristics that a conversion efficiency of the charging side power conditioner increases as a charging voltage increases, within an acceptable voltage range of the charging side power conditioner, and the discharging side power conditioner has such characteristics that a conversion efficiency of the discharging side power conditioner increases as a discharging voltage decreases, within an acceptable voltage range of the discharging side power conditioner.SELECTED DRAWING: Figure 1

The invention discloses an electric vehicle reverse charging method and device based on vehicle network interaction and a medium, and relates to the technical field of electric vehicles. The method comprises the following steps: after a power receiving vehicle and a power supply vehicle establish physical connection through a charging gun and a charging pile, the charging pile sends a session establishment request message to the power receiving vehicle to request a digital certificate of the power receiving vehicle and perform identity authentication; the power supply vehicle broadcasts battery state information through the charging pile; wherein the battery state information comprises battery capacity, residual electric quantity and dischargeable power; the powered vehicle sends a charging parameter discovery response message to the power supply vehicle through the charging pile according to own requirements; wherein the charging parameter discovery response message comprises a target charging parameter; and converting the battery output voltage of the power supply vehicle into the charging voltage required by the power receiving vehicle through the LLC resonant converter based on the target charging parameter which is consistent through negotiation.

A display device includes a first transistor connected between an image data signal line and a first node, switching of the first transistor controlled by a first control signal, a third transistor connected between the first node and a second node, switching of the third transistor controlled by a second control signal, a second transistor connected to the second node and connected between a power line and the third node, a fourth transistor connected between a reference voltage power line and the second node, switching of the fourth transistor controlled by the second control signal, a fifth transistor connected between an initialization voltage power line and the third node, switching of the fifth transistor controlled by the third control signal, and a sixth transistor electrically connected between a pre-charge voltage power line and the first node, and switching of the sixth transistor controlled by the fourth control signal.

The invention relates to the technical field of energy storage systems, and discloses an electrochemical energy storage charging control method and device based on dynamic parameter optimization. The electrochemical energy storage charging control method based on dynamic parameter optimization comprises the following steps: determining a target fuzzy set and a membership degree corresponding to each charging state parameter value by acquiring the charging state parameter value of each battery in a battery pack, and then calculating the charging state parameter value of each battery according to the fuzzy set and the membership degree. According to the method, the maximum charging current and the maximum charging voltage of each battery can be independently adjusted, so that the maximum charging current and the maximum charging voltage of each battery are matched with the aging degree, the charge-discharge cycle index and the like of the corresponding battery, and the problem of overcharge or undercharge of the battery can be avoided.

A system for charging a rechargeable power tool battery pack. The system includes a housing having a first port, a second port, and a power bus. The first port is configured to receive at least one selected from a power supply and a charging module. The second port is configured to receive the other of the at least one selected from the power supply and the charging module. Wherein the power supply is configured to supply a charging voltage, and wherein the charging module includes a battery receptacle configured to receive the rechargeable power tool battery pack, the rechargeable power tool battery pack having a first battery characteristic. The power bus is within the housing. The power bus is configured to provide an electrical connection between the first port and the second port and distribute the charging voltage.

The invention relates to a material dynamic mechanical property testing technology, in particular to an impact mechanical loading device and method based on a locked-rotor test of an electromagnetic coil emitter, and the device comprises a pulse power supply module, an electromagnetic loading module, a constraint fixing module and a measurement and control system. Capacitor charging voltage is set through an upper computer, a control switch is switched on to discharge an electromagnetic loading module to generate pulse current, and an electromagnetic coil generates a pulse magnetic field to enable a conductor armature to induce eddy current to generate axial electromagnetic force; the position of the armature is rigidly restrained to form locked rotor, impact electromagnetic force is directly loaded to a sample through an impact head to form impact stress, and dynamic response, fatigue damage and aging accumulation experiments of materials are carried out by monitoring the working performance of a monitoring device such as voltage, current and impact force. The device has the advantages of being small in size, flexible and adjustable in impact stress wavelength and amplitude, high in efficiency and the like, and the problems that a traditional mechanical impact device is large in size, the impact stress pulse width is not easy to regulate and control, and the test efficiency is low are solved.

The application discloses a kind of double-branch lithium battery health estimation methods of multi-source feature fusion, including the key operation data of lithium battery in the process of charging and discharging is collected by battery management system or test platform;The key operation data of lithium battery collected is extracted to multi-source health factor;The data preprocessing is carried out to the multi-source health factor extracted;Using the particle swarm optimization algorithm based on the principle of quantum mechanics is improved, the optimal section is searched in the reasonable range of charging voltage;In the determined optimal voltage section, the corresponding multi-source characteristic quantity is trained, the parallel double-branch network CMNN is established, the parameters are optimized by back propagation algorithm, and the QPSO-CMNN lithium battery state estimation model is obtained;The final model is used to estimate test set lithium ion battery SOH, the application uses QPSO to search optimal voltage section, adapts actual data missing and user battery actual use characteristics, with higher SOH prediction accuracy and robustness.

The invention discloses a processing method and device for updating full-charge voltage based on battery health degree, and a terminal, and relates to the technical field of battery charging protection, and the method comprises the steps: judging a current battery health degree state in a battery charging process; obtaining a current battery health degree state, comparing the current battery health degree state with the last stored battery health degree state, and judging whether the battery health degree is changed or not; when the health degree of the battery is changed, searching a preset association table of the health degrees of the battery in different states and different full-charge voltages, and obtaining a full-charge voltage value corresponding to the current health degree of the battery; and correspondingly setting the currently charged full-charge voltage value according to the obtained full-charge voltage value corresponding to the current battery health degree, so that the current battery charge quantity corresponds to the current battery health degree. According to the invention, the full-charge voltage of the battery can be modified according to the change of the health degree of the battery, so that the battery is within the use range of safe voltage for a long time, the safety of the battery is improved, and the service life of the battery is prolonged.

An analog-to-digital converting device includes a capacitive digital-to-analog converter, a comparator, and a controller. The capacitive digital-to-analog converter respectively generates a first and a second sample voltage according to a non-inverting output voltage and an inverting output voltage of a programmable gain amplifier during a sample period. The comparator generates a comparing signal by comparing the first and the second sample voltages during a converting period. The controller controls the capacitive digital-to-analog converter to generate a converting voltage according to the comparing signal during the converting period. The controller controls the capacitive digital-to-analog converter such that the capacitive digital-to-analog converter is pre-charged to a pre-charge voltage during a pre-charge period. The pre-charge voltage is between a maximum value and a minimum value of the non-inverting output voltage and the inverting output voltage of the programmable gain amplifier.

The embodiment of the invention discloses an intermittent power supply control circuit and an energy storage power supply thereof. The circuit comprises a power supply module; the pulse power supply module is conducted when a first charging voltage which is received and generated based on the power supply voltage is smaller than a first preset voltage, and transmits the power supply voltage to the enabling control module; closing when the first charging voltage is greater than or equal to a first preset voltage; the enabling control module is used for generating a second charging voltage based on the power supply voltage and outputting a control signal when the second charging voltage is greater than or equal to a second preset voltage; stopping outputting the control signal when the second charging voltage is smaller than the second preset voltage; and the control module is used for driving the power supply module to output power supply voltage when the control signal is not received and stopping driving when the control signal is received. By means of the mode, on the premise that the parallel operation function is normal, hiccup intermittent power supply of the energy storage power supply in the non-parallel operation state can be achieved, electricity consumption in the standby state is reduced, and the electricity utilization rate is increased.