154 results about "Charge cycle" patented technology

The present invention discloses a system and method for optimizing energy distribution in renewable energy plants. The system (100) comprises a solar power plant or a wind power plant to generate electrical energy. A renewable energy controller (108) monitors real-time energy output and manages energy flow to a grid (112). The renewable energy controller (108) optimizes charging cycles based on forecasts. The renewable energy controller (108) generates dispatch schedules through an intelligent bidding unit (114), considering market prices and grid conditions, while ensuring grid code compliance. A battery digital twin unit (122) is operatively connected to the renewable energy controller (108), to simulate future states of the plant based on historical data, real-time operational data, and weather forecasts, providing inputs for the intelligent bidding unit (114) to optimize energy dispatch and storage.

The invention discloses a high-cycle-performance aqueous battery, which comprises an aqueous electrolyte, a negative electrode, a first positive electrode and a second positive electrode, wherein the first positive electrode and the second positive electrode are positioned on two sides of the negative electrode, and a first diaphragm and a second diaphragm are respectively arranged between the first positive electrode and the negative electrode and between the second positive electrode and the negative electrode; the battery is provided with an electromagnetic valve, the electromagnetic valve is electrically connected with the first positive electrode and the second positive electrode to control switching of the positive electrodes in the charging and discharging loop, and every time discharging and charging circulation are completed, the electromagnetic valve switches the electrode connection relation, and the first positive electrode and the second positive electrode are alternately connected into the charging and discharging loop. Switching of the two positive electrodes in the aqueous battery is accurately controlled through the electromagnetic valve, a positive-negative battery structure is formed in real time, the double positive electrodes alternately perform lithium removal-lithium intercalation reaction, excessive Li intercalation or insufficient positive electrode reduction caused by long-term charging and discharging of a single positive electrode is avoided, the structural stability of the positive electrode material is improved, and the service life of the battery is prolonged. The cycle life and the electrochemical performance stability of the aqueous battery are obviously improved.

A method for determining a condition indicating imminent thermal runaway in a power source includes changing a state of charge of the power source during one of a plurality of charge cycles and a plurality of discharge cycle. In response to the state of charge in each of the one of the plurality of charge cycles and the plurality of discharge cycles, the method includes matching a first condition measuring the state of charge of the power source and determining an overpotential value based on the measured state of charge. The method also includes determining a trend based on a plurality of the overpotential values and identifying an indication of possible thermal runaway in the power source based on the trend indicating a downward trend of the plurality of overpotential values.

A method for managing a charging process of a battery pack for an electric vehicle is provided herein. The method includes initiating a charging cycle for the battery pack, actively managing temperature of the battery pack during the charging cycle by flowing a temperature-controlled coolant through a thermal management system integrated with the battery pack, monitoring state-of-charge (SOC) and temperature of the battery pack, adjusting a charging current and a coolant temperature of the temperature-controlled coolant based on a coupled electro-thermal model to achieve a target SOC and a target temperature range for electric vehicle operation, and terminating the charging cycle based on the target SOC and the target temperature range being achieved within predefined constraints.

The invention discloses a battery changing cabinet battery aging evaluation method and system based on charging mode clustering, and relates to the technical field of battery changing cabinet battery detection. The method comprises the following steps: analyzing a battery charging cycle according to a charging period of a battery changing cabinet, and constructing a multi-dimensional charging characteristic; clustering learning is carried out based on the features, a plurality of charging mode clusters are constructed, health analysis is carried out on the battery based on the clusters, and battery health state parameters are obtained; calling real-time charging data, matching the charging mode cluster in combination with the health state parameters, and determining a target charging mode cluster; and performing battery aging evaluation according to the target charging mode cluster to generate an aging evaluation result. The technical problems of low evaluation precision and poor real-time performance caused by charging mode diversity of an existing battery aging evaluation method are solved, and the technical effects that refined analysis and dynamic matching of the battery health state are achieved based on charging mode clustering, and the accuracy, scene adaptability and real-time responsiveness of a battery aging evaluation result are improved are achieved.

A method includes applying a preliminary discharge / charge cycle to a plurality of battery cells to obtain an initial capacity of each battery cell, applying multiple small current discharge / charge cycles to the plurality of battery cells to minimize initial voltage deviations of the plurality of battery cells, configuring a first battery cell to be tested at a plurality of first testing points, configuring a second battery cell to be tested at a plurality of second testing points, and configuring a third battery cell to be tested at a plurality of third testing points, wherein the first battery cell, the second battery cell and the third battery cell are tested concurrently for generating an OCV-SOC curve, and the plurality of first testing points, the plurality of second testing points and the plurality of third testing points are arranged in an alternate manner.

Embodiments of this application provide charging apparatuses, charging apparatus control methods, and charging systems, and relate to the field of terminal device charging technologies. The charging apparatus includes a rectifier circuit, a transformer, a lower bridge switch, a clamp capacitor, an upper bridge switch, and a controller. The transformer includes a primary coil and at least one secondary coil. The controller is configured to control the upper bridge switch and the lower bridge switch to be alternatively turned on. The controller is further configured to obtain a sampling waveform at a location at which the controller is electrically connected to the transformer when the lower bridge switch is turned off, and, when the sampling waveform is abnormal, turn off the lower bridge switch in a first phase of a next charging cycle. The sampling waveform includes a voltage waveform of the primary coil or a voltage waveform of the secondary coil.

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.

A method for detecting and suppressing lithium electrodeposition according to one embodiment of the present disclosure may include: a terminal voltage measurement step of measuring the terminal voltage of a lithium battery while charging the lithium battery with a charging current; a charging characteristic measurement step of dividing the terminal voltage into a plurality of voltage intervals and measuring the charging characteristic for each voltage interval; a charging characteristic comparison step of comparing the charging characteristics of the same voltage interval of a first charging cycle and a second charging cycle; and an electrodeposition determination step of determining lithium electrodeposition if the charging characteristic of the first charging cycle increases continuously in a single or plurality of voltage intervals compared to the charging characteristic of the second charging cycle.

The present disclosure aims to provide a semiconductor device that can suppress unintended activation of control power supply voltage drop protection during the initial charging period, and can also perform control power supply voltage drop protection during the control power supply voltage stabilization period. [Solution] The semiconductor device 100 according to the embodiment includes an IGBT 41, a control IC 1, a control IC 2A, and a bootstrap circuit 3 that generates a control power supply voltage VccU supplied to the control IC 1 by a bootstrap operation using a control power supply voltage VccL supplied to the control IC 2A. The control IC 2A has a control voltage detection circuit 22A that detects a decrease in the control power supply voltage VccL, and the control voltage detection circuit 22A has a period detection circuit 221A that detects an initial charging period for initially charging the bootstrap circuit 3 by a bootstrap operation.

The invention discloses a carbon emission analysis method and device for charging and discharging of an energy storage system and a medium. The method relates to the field of carbon emission, and solves the problem of low accounting precision of carbon emission. The method comprises the following steps: acquiring a real-time carbon emission factor of a power grid side, net power of a connection point between a user side and the power grid side, charge and discharge power and initial energy storage carbon intensity, and based on acquired data, obtaining accumulated absorption carbon emission and discharge carbon emission of a complete charge and discharge cycle; the energy storage carbon intensity is dynamically updated according to the accumulated charging energy and the absorbed carbon emission of the previous charging period during discharging; on the basis of the charging and discharging power, the user side carbon emission factor is corrected into the energy storage carbon intensity or the power grid real-time carbon emission factor, so that the user bears the carbon emission responsibility absorbed in the charging stage during discharging, the carbon influence of the power consumption behavior on the power grid is truly reflected, and finally the total power consumption carbon emission accounting is completed based on the correction factor. And the electric carbon emission accounting precision is improved.

The application discloses a battery internal short circuit diagnosis method and system and an electric vehicle thereof, and belongs to the field of electric vehicle batteries. The method comprises the following steps: collecting voltage data and total current data of each single battery in a battery pack in real time; determining a battery to be diagnosed and a reference battery set based on the voltage data; selecting at least two diagnosis reference points based on dynamic voltage characteristics of the reference battery set within a single charging period; extracting a plurality of different dimension fault features in the voltage data of the battery to be diagnosed based on the reference battery set within the two diagnosis reference points; adopting a weighted fusion algorithm to fuse the plurality of different dimension fault features, obtaining a comprehensive fault confidence, and calculating a short circuit resistance of the battery to be diagnosed; and performing fault determination and alarm based on the comprehensive fault confidence and the short circuit resistance, so that high-sensitivity and high-reliability internal short circuit diagnosis is realized within a single charging and discharging period.

The embodiment of the invention discloses an industrial robot automatic charging and fault grading system. A specific embodiment of the method comprises the following steps: a battery detection device is configured to perform fusion processing on a pre-collected multi-source environmental perception data set to generate robot current pose data with a semantic tag, and send the robot current pose data to a fault classification device; the charging device is configured to generate robot charging state data according to the received robot charging fault level, and transmit the robot charging state data to the mobile terminal; the mobile terminal is configured to render the received robot charging state data and cinder ladle temperature data collected in advance so as to generate a temperature change curve. According to the embodiment, the inspection continuity is improved, the fault grading time and the charging period are shortened, and the operation loss is reduced.

The invention relates to the technical field of electric vehicles, and discloses an average energy consumption calculation method and device, an electric vehicle and a storage medium, and the method comprises the steps: obtaining battery performance parameters and mileage data of the electric vehicle in real time; calculating first energy consumption of the electric vehicle in a single power-on period and second energy consumption of the electric vehicle in a single charging period based on the battery performance parameters and the driving mileage data; respectively calculating a first weight coefficient corresponding to the first energy consumption and a second weight coefficient corresponding to the second energy consumption according to the battery performance parameter, the driving mileage data and the second energy consumption; and performing weighted calculation on the first energy consumption and the second energy consumption by using the first weight coefficient and the second weight coefficient to obtain the real-time average energy consumption of the electric vehicle. According to the method, the actual influence degree of the energy consumption of the automobile in different running stages and running states can be comprehensively covered, so that the calculation of the real-time average energy consumption is more accurate, and the prediction precision of the endurance mileage and the driving experience of a user are further improved.

The invention discloses a bus support capacitance calculation method and device, a medium and a product, and relates to the field of power electronics, and the method comprises the steps: firstly, calculating a neutral-point potential fluctuation allowable value according to a three-phase output voltage peak value and a load power factor angle of a three-level inverter; calculating the three-phase output current of the three-level inverter according to the three-phase output current peak value of the three-level inverter; capacitance current flowing through the subintervals is calculated; then calculating the charge cumulant of the bus capacitor in a charging period; and finally, calculating the minimum capacity of the bus capacitor according to the neutral-point potential fluctuation allowable value and the charge cumulant. The technical problem that the capacitance cost and the capacitance volume cannot be effectively reduced due to the fact that the existing method is low in calculation efficiency and difficult to accurately calculate the minimum capacitance capacity on the premise that the output waveform is not distorted is solved.

This application provides a battery charging method, a battery charging device, an electronic device, and a storage medium, belonging to the field of charging technology. The method includes: querying a charging mapping table based on first battery state parameters of the target battery at the start of charging to obtain a first charging current; performing a first charging process on the target battery based on the first charging current; and performing lithium plating detection on the target battery based on a preset charging cycle; determining a target charging mode based on the lithium plating detection result; acquiring second battery state parameters at the moment the target battery switches from the first charging process to charging using the target charging mode; querying a charging mapping table based on the second battery state parameters to obtain a second charging current; and performing a second charging process on the target battery based on the target charging mode and the second charging current. This application's embodiment determines the charging mode based on the battery's state parameters during actual use, enabling rapid charging of the battery while ensuring battery safety.

The invention discloses an electrolyte additive, an electrolyte and a battery. The electrolyte additive comprises a first additive and a second additive; the first additive comprises a compound shown as a formula I; in the formula I, R1 is at least one F-substituted C1-C6 straight-chain alkyl; the second additive comprises an unsaturated carbonic ester substance. By adopting the synergistic effect of the first additive and the second additive, the storage performance and the quick charge cycle performance of the lithium ion battery under high-temperature and high-pressure conditions can be improved.

An aerosol-generating device and a method of performing sensor calibration in an aerosol-generating device, comprising: providing a reference current for charging a capacitive sensor during a charging cycle of the capacitive sensor; acquiring a count value corresponding to a time required for full charging of the capacitive sensor in a case where the capacitive sensor is fully charged from the discharge voltage to the charge voltage by means of the reference current; judging whether the obtained count value is within a preset normal range, wherein the preset normal range comprises a reference count value which is normal in a state that the aerosol generating article is not inserted; and performing calibration of the sensitivity of the capacitive sensor by adjusting the level of the reference current supplied to the capacitive sensor when it is determined that the acquired count value exceeds the normal range.

The invention relates to a method for operating a motor vehicle (10) by means of a control device (12), wherein the motor vehicle (10) has a computing unit (18) for mining a cryptocurrency, and an energy storage device (16) that can be charged from an external power source (14).The control unit (12) is designed to determine a future charging period (Z) during which the energy storage device (16) can be charged at an external power source (14) and for which a charging parameter (S) fulfills a predetermined condition (V), to predict a first amount of energy (EK) to be provided by the energy storage device (16) to cover at least the energy demand of the motor vehicle (10) due to driving operation, to determine a maximum second amount of energy (EL) that can be provided by the power source (14) during the specified charging period (Z), and if at least one first condition (B) is met, namely that the second amount of energy (EL) is greater than the first amount of energy (EK), to activate the computing unit (18) before the start of the specified charging period (Z), so that the operation of the computing unit (18) before the start of the specified charging period (Z) consumes a maximum of the difference in energy (ED).

The present disclosure relates to a charging and discharging device comprising: a sensing portion obtaining a status information of a battery cell, and a controller determining whether the battery cell is abnormal using the status information, wherein the controller determines whether the battery cell is abnormal based on comparing a first status information of the battery cell obtained in the N−1th, where N is a natural number of 2 or more, charging cycle of the battery cell and a second status information of the battery cell obtained in the Nth charging cycle following the N−1th charging cycle of the battery cell.

The utility model discloses a charging pile device for a four-footed robot dog, which can provide charging voltage for four groups of robot dogs at the same time through a charging pile body, so that a plurality of robot dogs can be charged at the same time in one charging period, thereby greatly improving the charging efficiency. The positive and negative probes of the charging pile are in direct contact with the charging contacts of the abdomen of the quadruped robot dog, energy loss in the charging process is reduced, the charging efficiency is further improved, the charging pile body can be accurately positioned to the abdomen of the quadruped robot dog through introduction of the positioning component, the charging alignment process is simplified, and the charging efficiency is improved. A user does not need to manually adjust the position of the robot dog or the charging pile, the operation convenience is improved, the accuracy of the positioning part is also beneficial for preventing charging faults or robot dog damage caused by misalignment of positions, the charging pile device is suitable for four-footed robot dogs of various models and specifications, and the practicability is high. And the positions and specifications of the belly charging contacts meet the design requirements of the charging pile.

This invention discloses a power transmission method and system for a power supply device during secondary charging. When the charging device is disconnected from the power supply device and then reconnected, the power supply device is in a secondary charging phase. The secondary charging phase of the power supply device is managed, and charging data from the first charging cycle is collected to obtain the first charging efficiency and idle time. Secondary charging logic is constructed based on the first charging efficiency and idle time to adjust the power transmission efficiency of the power supply device. The parameters of the first charging efficiency and idle time are introduced to control the secondary charging process in terms of efficiency and time factors. The second charging time is adjusted based on the charging efficiency of the second charging cycle. At this time, the power supply device triggers the replacement of the corresponding charging line according to the output of the secondary charging logic, and performs secondary charging based on the corresponding power transmission efficiency.

This invention discloses a method and system for battery aging assessment of battery swapping cabinets based on charging pattern clustering, belonging to the field of battery testing technology for battery swapping cabinets. The method includes: analyzing battery charging cycles according to the charging cycle of the swapping cabinet to construct multi-dimensional charging features; performing clustering learning based on these features to construct multiple charging pattern clusters; performing health analysis on the battery based on these clusters to obtain battery health status parameters; retrieving real-time charging data and matching the charging pattern clusters with the health status parameters to determine the target charging pattern cluster; and performing battery aging assessment based on the target charging pattern cluster to generate aging assessment results. This invention solves the technical problems of low assessment accuracy and poor real-time performance caused by the diversity of charging patterns in existing battery aging assessment methods. It achieves refined analysis and dynamic matching of battery health status based on charging pattern clustering, improving the accuracy, scenario adaptability, and real-time responsiveness of battery aging assessment results.

According to some embodiments, a method of activating a battery system is presented. The method includes initiating a first activation sequence in a first time period on a first energy rack system, the first activation sequence including alternating charge and discharge cycles; initiating a second activation sequence in a second time period following the first time period on a second energy rack system, the second activation sequence including alternating charge and discharge cycles; and executing the first activation sequence and the second activation sequence until activation completion, wherein the first activation sequence is coordinate with the second activation sequence such that charge cycles in the first activation sequence correspond with discharge cycles of the second activation sequence and discharge cycles in the first activation sequence correspond with charge cycles of the second activation sequence.

This invention relates to a method and system for detecting internal short circuits in a battery. The method includes acquiring constant current charging data of the battery under different charging cycles; the charging conditions are the same for each charging cycle; performing time alignment processing on the constant current charging data corresponding to each charging cycle to obtain a first feature curve; performing interval sampling on the first feature curve to obtain a second feature curve; calculating battery similarity data based on the second feature curve; and determining that the battery is in an internal short circuit state when the similarity data is greater than a judgment threshold. By collecting constant current charging data under different charging cycles, performing time alignment processing and interval sampling to obtain curves, and calculating battery similarity data under different cycles based on these curves, the battery is determined to be in an internal short circuit state when the similarity data is greater than a judgment threshold. This method is easy to execute online in real time in resource-constrained embedded battery management systems, does not rely on a specific battery model, and has strong stability in detecting internal short circuits in batteries.

An electric vehicle recovery supply equipment (EVSE) can provide a low voltage via the proximity pilot pin to activate the battery management system (BMS) and supply the necessary contactors with contactor current. In one example, the BMS can be activated to allow the recovery EVSE to provide high-voltage direct current (HVDC) to the energy storage system (ESS). Once the ESS is sufficiently charged to power the contactors and sustain a charging cycle itself, the BMS can activate the onboard low-voltage (LV) system to initiate a charging process.

This application provides an endplate assembly, a battery module, and a battery pack, relating to the field of battery technology. The endplate assembly includes an endplate body, which has a first surface and a second surface disposed opposite to each other along a third direction. The endplate body includes multiple weight-reducing holes and multiple buffer holes. The multiple weight-reducing holes are disposed on both sides of the endplate body along the first direction, and / or on the side of the endplate body near the second surface, and the weight-reducing holes penetrate the endplate body along the second direction. The multiple buffer holes are disposed in the middle of the endplate body along the first direction, and at least some of the buffer holes are disposed on the side of the endplate body near the first surface, and the buffer holes penetrate the endplate body along the second direction. In the buffer holes disposed near the first surface, the hole wall surface of the buffer hole near the first surface is parallel to the first surface, and at least one hole wall surface of the buffer hole is inclined relative to the first surface, which can effectively absorb the expansion force generated by the battery cell, improve the structural strength of the battery module and the safety under high charging cycle conditions.

A control device (114) for use with an aerosol provision device (102) comprising an energy storage device (106). The control device (114) is configured to determine a property of the energy storage device (106); and to vary a parameter of a charging cycle of the energy storage device (106) based on the determined property.

The invention is applicable to the technical field of head-mounted Internet of Things intelligent mobile terminals, and provides an optimization method and a network system of a head-mounted battery pack, comprising a mobile power supply mounted on one (top) or multiple (top) cap bodies, and digital displays of a rechargeable battery, a power generation device, stored electric quantity, residual used electric quantity and the like on the mobile power supply of the cap bodies. The electric quantity relates to intelligent real-time matching of current, voltage and power related to a control switch, a rechargeable battery, power generation equipment, a microcomputer main control board, a wireless communicator, a display screen, an identity recognizer, a temperature detector, a human brain detection sheet sensor, a camera, a night vision device, an illuminator, earplugs, a pickup arm, other hardware equipment and the like; the invention discloses a six-phase battery pack optimized power supply system capable of automatically distributing and metering. According to the six-phase battery pack, micro-current, micro-voltage and micro-power of a human brain detection sheet serve as a minimum standard battery unit, and two or more battery units are combined and optimized in two modes of increasing voltage in series and increasing current in parallel to form a network system. Therefore, the electric power requirements of the head-mounted Internet of Things intelligent mobile terminal and other hardware equipment can be met. Through the optimized network system, a user can solve the power utilization problem of the head-mounted Internet of Things intelligent mobile terminal and master the power utilization condition at any time. A user can freely select the charging period according to the actual situation, the mode that an existing MR head-mounted display is charged once a day generally is improved to the mode that the existing MR head-mounted display is charged once a week generally, the mode that the existing MR head-mounted display is charged once a month generally, the mode that the existing MR head-mounted display is charged once a year generally, the mode that the existing MR head-mounted display is charged once a year generally and the mode that the existing MR head-mounted display is charged once a year generally are improved, and the charging time can be customized. According to the utility model, the problems of difficult charging, many charging times, uncontrollable charging and the like of the existing MR head-mounted display are solved, long-term power support is provided for the Internet of Things intelligent terminal of the Internet of Things in the future, the charging time of a user is saved, and the use efficiency of the user is improved. Therefore, transformation of everything digitization can be accelerated, and rapid development of artificial intelligence and the Internet of Things is promoted.

The invention provides a control circuit, a driving method, a control chip and a charging device, and relates to the technical field of power management chips, the circuit comprises a transformer, a controller and a first capacitor; the controller comprises a first switching circuit, a second switching circuit, a power supply end, a switching node end and a grounding end. The transformer comprises a primary winding and a secondary winding. The controller controls the controller to be switched between a charging period and a non-charging period according to the relation among the voltage value of the power supply end, the first preset voltage value and the second preset voltage value, power is provided for the power supply end of the controller, and the control circuit converts the input voltage into the system voltage. The transformer does not comprise an auxiliary winding, and a path from the primary winding to the power supply end is added through the second switching circuit, so that energy in the primary winding can be directly transmitted to the power supply end through the second switching circuit. As an auxiliary winding is omitted, the cost of the system and the complexity of the circuit can be reduced.