699 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.

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 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 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.

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 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.

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.

A method for operating a high voltage on-board power supply of a vehicle having a protective device for when physical contact with the high voltage potentials and a reference potential when charging a high voltage battery by a direct current charging station is provided. The protective device has a voltage measuring device and a protective switch. In one of the high voltage potentials, between the protective device and a direct current charging connection, a galvanically coupled DC / DC converter is arranged and the direct current charging station provides a charging voltage, which is lower than a nominal voltage of the high voltage battery. It is determined whether physical contact with the high volage potential, in which the DC / DC converter is arranged, occurs between the DC / DC converter and the direct current charging station, and this is used as a triggering criterion for controlling the protective circuit and / or a further protective circuit.

The invention discloses a vehicle battery charging device and method and a vehicle, the vehicle battery charging device comprises a controller, a first switch and a converter arranged between a power battery and a fast charging interface of the vehicle, and the converter comprises a first bridge arm, a second bridge arm and a third bridge arm; the two ends of the first bridge arm, the second bridge arm and the third bridge arm are respectively connected with the power battery and the quick charging interface, the midpoints of the first bridge arm, the second bridge arm and the third bridge arm are respectively connected with a winding of a three-phase motor of a vehicle, and one end of the first bridge arm is connected with one end of the second bridge arm through the first switch; the controller is connected with the converter and the first switch and used for obtaining the maximum output voltage of the charging pile, the minimum charging voltage of the battery and / or the environment temperature when the fast charging interface is connected to the charging pile, controlling the converter and the first switch and switching the working mode of the power battery. According to the invention, the functions of up-current charging, direct charging and boost charging can be realized, the pulse heating function of the low-temperature power battery can be compatible, and the cost is low.

The utility model discloses a lithium battery charging protection module, which is used in a battery charging circuit and comprises a shell and a battery protection board. A shell inner cavity is formed in the shell, the battery protection plate is installed in the shell inner cavity, and an MOS tube, a voltage monitoring module and a controller are arranged on the battery protection plate; the MOS tube is used for being connected in series in a battery charging circuit; the voltage monitoring module is used for being electrically connected in a battery charging circuit so as to monitor the charging voltage value of the battery charging circuit. The controller is electrically connected to the MOS tube and the voltage monitoring module. The utility model provides a battery protection device independent of a BMS (Battery Management System), so as to more reliably protect the battery and improve the convenience of maintenance.

The utility model provides a kind of protection charging system of robot charging pile, it is related to robot charging technical field, system includes charging end, signal sampling end, power supply unit, monitoring unit, main control unit. By introducing monitoring unit detection robot ontology and the on-off between monitoring contact on charging pile, generating on signal or disconnect signal and send to main control unit, main control unit controls the power supply unit in charging pile and powers on output charging voltage and current according to on signal or disconnect signal and charges or disconnects power supply and stops charging, so that robot can automatically turn off power after leaving charging pile, avoid the charging electrode piece of charging pile long time conduction, even if human press charging contact on charging pile also cannot trigger power supply, can prevent electric shock, guarantee the safety of robot charging pile, especially suitable for domestic robot, can avoid domestic child mis-trigger or naughty active trigger and lead to electric shock.

The invention provides a power failure protection system and an electronic device. The power down protection system may include: a control logic circuit configured to generate a first path control signal and a second path control signal; an auxiliary power supply including a first capacitor associated with a first charge-tolerant voltage level, a second capacitor associated with a second charge-tolerant voltage level lower than the first charge-tolerant voltage level, and a path control circuit, a path control circuit configured to control an electrical connection between the first capacitor and the second capacitor based on the first path control signal and the second path control signal; and a power down protection circuit connected to the first capacitor and configured to: provide charging power to the auxiliary power supply by using external power; and charging the first capacitor to the first charging voltage level after charging the first capacitor and the second capacitor to the second charging voltage level by providing charging power.

A receiver for wirelessly receiving transmitting power includes a control unit, a charging unit charged by the transmitting power, a sensor configured to measure a physical quantity, and a transmitter configured to transmit the physical quantity. The control unit includes a voltage acquisition module to detect a charging voltage of the charging unit, a threshold comparison module to compare the voltage with a threshold, and a power receiving state determination module to determine a power receiving state based on the comparison. The control unit includes a transmission control module to determine whether transmission is permitted based on the state. A transmission timing control module causes the transmitter to transmit at a predetermined interval. If transmission is not permitted, the timing is delayed by a predetermined time. If the timing is consecutively delayed a predetermined number of times, the transmission is performed after a next predetermined transmission interval.

The utility model discloses a charging voltage regulation circuit and a mobile power supply. The charging voltage regulation circuit comprises a charging interface module, an input rectification filtering module, a synchronous rectification module, an output filtering module, a protocol control module and a flyback control module. Wherein the protocol control module is electrically connected with the flyback control module and the charging interface module, the flyback control module is electrically connected with the input rectification filtering module and the synchronous rectification module, the synchronous rectification module is electrically connected with the output filtering module, and the output filtering module is electrically connected with the charging interface module. The synchronous rectification module is configured to adjust the input voltage input into the rectification filtering module, and the input voltage is output to the charging interface module through the output filtering module. According to the utility model, the drain-source voltage and switching loss of the synchronous rectification MOS can be reduced, and the stability and efficiency of the system are improved.

To provide an image forming apparatus and a detection method capable of detecting the operation of a protection circuit without complicating its configuration. [Solution] The image forming apparatus 100 includes a charging roller that charges the photoreceptor drum 31 in response to the application of a charging voltage, a protection circuit 50 that stops the operation of the voltage generation circuit 40 that generates the charging voltage when the current flowing through the charging roller exceeds a threshold, a sensor 61 used to detect the density of the toner image formed by the developing apparatus, and a second detection processing unit 74 that uses the sensor 61 to detect the operation of the protection circuit 50.

The application provides a charging method and device of a charging stack, a readable storage medium and an electronic device, the charging stack comprising a switch array and a DCDC power module connected electrically, the DCDC power module comprising a plurality of power sub-modules, the method comprising: obtaining a charging voltage and a charging current of an electric vehicle; determining a series number of corresponding power sub-modules according to the charging voltage of the electric vehicle, and determining a parallel number of corresponding power sub-modules according to the charging current of the electric vehicle; determining the opening and closing of each switch device according to the series number of the power sub-modules and the parallel number of the power sub-modules, so as to determine the connection mode of each power sub-module in the DCDC power module, and to charge the electric vehicle. The method connects the flexible switch array to the input end and the output end of the DCDC power module respectively, realizes the dynamic reconfiguration of the series-parallel connection mode between the modules, and effectively improves the flexibility of the system.

Disclosed in the embodiments of the present application is a charging device. The charging device comprises a power conversion unit and a charging controller, wherein an input end of the power conversion unit is electrically connected to an output end of a first power supply; the first power supply is a power supply that supplies power to a computing device in a data center; the first power supply comprises an uninterruptible power supply (UPS) or a high-voltage direct-current (HVDC) power supply system; an output end of the power conversion unit is electrically connected to a device to be charged; the power conversion unit is used for converting an output voltage of the first power supply into a charging voltage of said device; the charging controller is electrically connected to the power conversion unit; and the charging controller is used for controlling the charging device to charge said device. Thus, the construction time of a charging pile power supply system can be shortened, thereby reducing the construction cost of the power supply system.

The utility model discloses a constant current lamp circuit for mowing machine, including power supply output module, isolation module and operational amplifier module, the output terminal of power supply output module is connected with the input terminal of operational amplifier module, the output terminal of operational amplifier module is divided into two paths, one path is connected with the isolation module, and the other path is connected with light emitting circuit. According to the utility model, the voltage change during charging is detected through the operational amplifier module, under the normal charging condition, the charging voltage is lower than the comparison voltage of the operational amplifier module, and the operational amplifier module outputs a low level, so that the red lamp of the light-emitting circuit is lightened; after the battery is fully charged, the loop current of the operational amplifier module is reduced, the charging voltage is higher than the comparison voltage of the operational amplifier module, the operational amplifier module outputs a high level, a green lamp of the light-emitting circuit is lightened, the voltage in the charging process is compared and monitored in real time, the charging condition of the battery can be reflected in real time, and a user can conveniently check the charging condition.

This invention discloses a device for driving a closing component (9) in a building using a solar power source (1). It includes at least one low-voltage AC motor (3) mechanically connected to the closing component, a DC energy storage element (2), and a solar power source supplying DC voltage. The energy storage element has a rated voltage lower than the effective voltage and greater than the DC voltage supplied by the solar power source. A DC-DC charger (4) converts the output electrical energy from the solar power source into electrical energy having a charging voltage of the energy storage element. A DC-AC converter (5) converts the electrical energy from the DC output voltage of the energy storage element into electrical energy having an AC voltage capable of powering the motor.

The application discloses a kind of retired power battery gradient screening method, device and readable medium, by obtaining the charging voltage data of retired power battery, by piecewise aggregation approximation algorithm, the charging voltage data is processed, and dimension reduction data is obtained;Gram angle field conversion is carried out to dimension reduction data, and polar coordinate data is obtained;Polar coordinate data is converted into coded image using gram angle field;The coded image is input into the battery classification model trained, and the battery capacity category is obtained, and the battery classification model uses ConvNeXt model.The method can retain feature information while reducing the amount of calculation by dimension reduction and normalization processing of charging voltage data.And the time series data after dimension reduction is converted into GADF image using gram angle field, and then the GADF image is classified and screened using ConvNeXt model, with high screening accuracy and good accuracy, and certain applicability.

This application relates to the technical field of voltage regulation function testing for power banks. It discloses a voltage regulation function simulation testing system and method. This application constructs a voltage regulation function simulation testing system including a simulation clock and a simulation cycle counter. At the software level, it directly simulates the passage of time and the accumulation of charge-discharge cycles during long-term battery use based on user-configured test parameters. The core algorithm layer uses simulation time and / or the number of simulated full-charge cycles to simulate the charging voltage of the power bank over time and the accumulation of charge-discharge cycles, thus completing the voltage regulation function simulation test of the power bank. This method of completing the voltage regulation function simulation test of a power bank through software simulation algorithms greatly reduces the physical testing time required without changing the physical testing environment or replacing the tested object. This significantly shortens the testing cycle while ensuring the test results accurately reflect real-world usage scenarios and have high reliability.

The utility model relates to circuit technical field, concretely is a kind of solar energy storage control circuit with input side energy detection function, to solve the battery energy reverse backflow, system efficiency decline and loop instability problem caused by input side energy fluctuation in unstable energy supply scene such as solar energy, wind energy.The control circuit is applied to connect energy input end and energy storage medium, comprising: synchronous step-down circuit, for adjusting the charging voltage and current from energy input end to energy storage medium;Input current detection module is coupled between energy input end and synchronous step-down circuit, for detecting input current by detecting resistance Rsen, and combining the current flowing through resistance R2 generated by oscillation signal, generate detection signal proportional to input current size;Reference voltage generating circuit generates reference voltage;Comparison and control module is used for comparing detection signal and reference voltage, and generates control signal according to comparison result, to turn on or turn off the charging path of synchronous step-down circuit.