24results about How to "Prevent overcharging" patented technology

The application discloses a passive equalization method of a battery in a charging state, and relates to the technical field of software function algorithm of vehicle power battery. The method comprises the following steps: data acquisition, data identification, data judgment and program control. The data acquisition method comprises the following steps: collecting the single battery voltage, the hardware board temperature and the lead-acid battery voltage in real time. Through the data, it can be judged whether the current battery state can be equalized. The data identification method comprises the following steps: obtaining the maximum value, the minimum value, the average value and the pressure difference between the highest single battery and the lowest single battery of the single battery voltage collected in real time. The single battery voltage is looked up from high to low to obtain the equalization SOC value corresponding to each single battery. The application can keep the lithium ion battery single battery voltage or the battery pack voltage deviation in the expected range, thereby ensuring that each single battery maintains the same state in the normal use, and avoiding overcharging and overdischarging.

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.

A system and method for charging a battery. A charger includes a frame providing a support structure. The frame defines a receptacle for receiving a battery. The charger includes an electrical interface associated with each receptacle configured to electrically connect to a contact of the battery. The power system is used for supplying power to the electrical interface to charge the battery. The charger is configured to stabilize storage horizontally or vertically.

This utility model discloses a charger with a storage battery, which includes a charger body and a mounting housing. The storage battery is installed in the lower part of the mounting housing, a battery management unit is installed on the upper part of the storage battery, and a charging control unit is installed on the upper part of the battery management unit. An input connector is installed at the front end of the mounting housing, and an output unit is installed at the rear end of the mounting housing. By switching the control module and the charging control unit in coordination, bidirectional energy management between the external power supply and the storage battery can be realized. When the external power supply is connected, it can directly power the electronic product and charge the storage battery simultaneously. When the power is off, it automatically switches to power supply from the storage battery. It can also charge the storage battery independently. It has the characteristics of uninterrupted power supply, dual-path operation and multi-path energy management. Combined with a safety protection module, it prevents overcharging, over-discharging, overcurrent and short circuit, improving the applicability and safety of the device in outdoor, emergency and mobile scenarios.

This utility model discloses a distributed photovoltaic energy storage system, belonging to the field of photovoltaic energy storage technology, aiming to solve the problems of high thermal runaway risk, low conversion efficiency, and insufficient synergy between photovoltaic and energy storage in existing centralized energy storage technologies. The system includes multiple distributed energy storage PACK modules and an inverter. Each PACK module integrates photovoltaic modules, an energy storage battery pack, a DC MPPT DC / DC charge / discharge controller, and a BMS. Multiple PACK modules are connected in series to form a series group, and the output of the series group is connected to the inverter to achieve AC / DC conversion. Intelligent control and monitoring can also be achieved through an EMS communication manager and a power detector. This utility model reduces the risk of thermal runaway through a distributed design, improves efficiency by integrating an MPPT controller, adapts to traditional installation methods and supports flexible expansion, and can achieve efficient synergy and peak shaving between photovoltaic and energy storage, thereby improving the economic efficiency of energy utilization.

The application provides a multi-output voltage power supply system, a control circuit thereof, an electronic package and a multi-output control method. In an embodiment, the control circuit comprises a turn-on control circuit and a turn-off control circuit for controlling an energy distribution switch in a first output circuit. In a switching cycle, when a secondary side is powered, a second output circuit is powered first, the energy distribution switch is turned on to power the first output circuit when the turn-on control circuit detects that a first condition is met, and an input end of the turn-off control circuit is coupled to a secondary side winding, the energy distribution switch is turned off when the turn-off control circuit detects that a second condition is met based on a signal on the secondary side winding. The application is used to solve the stability problem of multi-output and can be applied to different working modes and working frequencies.

The application discloses a solar charging and discharging management circuit, which comprises a power management module, a battery pack, an analog front end monitoring module, a power output branch and a main control module. The input end of the power management module is connected with a solar panel interface, which is used for converting input electric energy through a maximum power point tracking (MPPT) function. The battery pack is connected with the power output end of the power management module. The analog front end monitoring module is connected with the battery pack, which is used for collecting physical state information of the battery pack in real time. The input end of the power output branch is connected with the battery pack and the power output end of the power management module, and the output end of the power output branch is provided with a controlled switch, which is used for providing direct current to an external load. The main control module is connected with the analog front end monitoring module and the controlled switch, which is used for calculating battery power according to the physical state information and controlling the opening and closing states of the controlled switch according to the battery power. Through MPPT conversion, AFE high-precision monitoring and main control intelligent closed-loop control, the application realizes efficient energy utilization and accurate battery protection.

The invention provides a vehicle-mounted solar charging system and method based on intelligent control and a vehicle, and relates to the technical field of vehicle energy management, and the vehicle-mounted solar charging system comprises a solar cell panel, a charging controller, a power conversion distributor, a control module, a roof battery pack and a user interaction interface; the solar cell panel is arranged on the roof and used for converting solar energy into electric energy. The control module monitors the illumination intensity, the SOC (State of Charge) and the temperature of the car roof battery pack in real time, and when it is monitored that the illumination intensity is larger than a preset threshold value, the SOC of the car roof battery pack is lower than the upper limit and a user does not turn off the function, the charging process of the car roof battery pack is started; the vehicle roof battery pack is charged in real time; the control module distributes electric energy of the roof battery pack through the power conversion distributor according to the SOC of the main storage battery and the requirements of vehicle electric equipment. Solar energy is fully utilized for charging to provide an auxiliary power supply for the automobile, and the extra power utilization requirement of a user is met.

The embodiment of the application discloses a kind of charge-discharge control system and method, the system includes: charger, LED drive module and energy storage module;Charger is used to convert alternating current into direct current, and output to LED drive module and / or energy storage module;Energy storage module is used to store or release electric energy, and when storing electric energy, charge state signal is sent to LED drive module;LED drive module is used to drive load to work according to the electric energy released by energy storage module when charger is not connected to power supply;When charger is connected to power supply, drive load to work according to the direct current output by charger;LED drive module is also used to forward charge state signal to charger, to indicate that charger adjusts the charging current output to energy storage module.The technical scheme of the embodiment of the application realizes the collaborative control of charge-discharge and load power supply, guarantees the continuous and stable operation of load, and improves the safety and reliability of system.

The application discloses a new energy automobile low-voltage lithium battery charging control method, comprising the following steps: constructing a lithium battery charging control system; performing battery health state estimation calculation; performing residual power estimation calculation; realizing state switching of a DC / DC control module; and regulating the DC / DC output voltage in a proportional regulation mode to avoid overcharging of the battery in the regulation process. The above technical scheme realizes the cooperation among a battery health state estimation module, a residual power estimation module and a DC / DC control module, estimates the battery health state, triggers full charging calibration SOC when the SOC cumulative error is too large, ensures that the SOC estimation error is within a controllable range, regulates the DC / DC output voltage in a proportional regulation mode to avoid the overcharging problem of the battery in the regulation of the DC / DC voltage, and realizes the optimization of the lithium battery charging control.

The invention relates to the field of medical care equipment, and discloses a portable electronic cold compress device which comprises a cold compress device shell, a cold compress device cover plate is arranged on the front side of the cold compress device shell, two sets of mounting blocks are arranged on each of the left side and the right side of the cold compress device shell, and binding belts are arranged on the sides, away from each other, of the two sets of mounting blocks. Connecting hook-and-loop fasteners are arranged on the outer sides of the four binding belts, a flexible protection layer is arranged on the front surface of the cold compress device cover plate, fixing plates are arranged on the sides, close to each other, of the four binding belts, and T-shaped movable inserting blocks are arranged on the sides, close to each other, of the four fixing plates. And movable mounting grooves matched with the mounting blocks are formed in the sides, far away from each other, of the four groups of mounting blocks. Through closed-loop control of the temperature sensing module and the main control module, accurate adjustment of the temperature of the cover plate of the cold compress device is achieved, the cold compress temperature is stably maintained in a target range set by a user, and controllability and consistency of the treatment effect are guaranteed.

The invention relates to a photovoltaic output control method for an energy storage system, and the method comprises the steps: setting a photovoltaic panel to be connected with a load to form a power loop and connected with a battery to form a charging and discharging loop, enabling the power loop and the charging and discharging loop to be connected to a bus in parallel, obtaining the operation data of a photovoltaic energy storage off-grid system, and carrying out the control of the photovoltaic output of the photovoltaic energy storage off-grid system based on the operation data and battery parameters. And determining an expected output power upper limit, an expected output power lower limit and actual operation power of MPPT control, increasing the bus voltage by adopting a positive step length under the condition that the actual operation power is smaller than the expected output power lower limit, and reducing the bus voltage by adopting a negative step length under the condition that the actual operation power is larger than the expected output power upper limit. According to the invention, the problem of low energy utilization rate of the optical storage system is solved, the upper and lower limits of the expected output power are determined through the operation data and the battery parameters, battery overcharge is avoided, and the energy utilization rate is improved under the condition of ensuring battery safety.

The invention relates to the technical field of communication, in particular to a charging circuit, a terminal and a battery protection method. The charging circuit is arranged at a terminal, the device comprises a battery protection circuit, the first end of the battery protection circuit is connected with a battery pack, the second end of the battery protection circuit is connected with the first end of a charge pump, and the second end of the battery protection circuit is further connected with a first load; wherein the battery protection circuit disconnects the connection between the first end of the battery protection circuit and the second end of the battery protection circuit under the condition that the terminal is connected with a charging circuit and the battery pack is fully charged.

This invention relates to the field of lithium-ion battery technology, and discloses a composition for preparing a fire-retardant composite electrolyte, the fire-retardant composite electrolyte, and a method for preparing the same. The composition contains the following components: lithium hexafluorophosphate, solvent, flame retardant, overcharge protection agent, surface film-forming agent, cathodic protection agent, and fluorocarbon surfactant; the flame retardant is selected from at least one of nitrogen-containing compounds and organophosphorus compounds; the overcharge protection agent is selected from at least one of tris(4-methoxyphenyl)phosphine and 2,5-di-tert-butyl-1,4-dimethoxybenzene. The fire-retardant composite electrolyte prepared from the composition provided by this invention can improve battery safety while ensuring high electrochemical performance when used in lithium batteries.

The invention relates to the technical field of integration of perovskite solar cells and flexible electronic equipment, in particular to a perovskite / perovskite / crystalline silicon three-junction laminated solar power supply electronic paper book which comprises an electronic paper book body, a three-junction laminated solar cell module and an integrated fixing structure. The electronic paper book body comprises a flexible electronic ink display screen, a low-power-consumption master control module, an energy storage module and a light sensing module. According to the invention, the photoelectric conversion efficiency is improved through the three-junction band gap complementary design so as to meet the rapid power supplement requirement, weak light response is optimized through full-spectrum absorption and illumination adaptive regulation and control so as to adapt to multiple scenes, and the flexible conductive layer and the stress buffer structure are utilized to solve flexible adaptation and realize lightening and thinning. Perovskite modification and crystalline silicon passivation are utilized to enhance stability matching and long-term use, intelligent charging regulation and control are realized through linkage of light sensation and a main control module, safety and service life are guaranteed, and the use requirements of efficient power supply, flexibility, portability, stability and reliability of the electronic paper book are met in all directions.

The application relates to a battery protection method, device, equipment, storage medium and program product. The method is applied to an energy storage system, the energy storage system comprises a plurality of energy storage modules and a controller connected with the energy storage modules, the energy storage modules are connected in series, the energy storage module comprises a power module, a switching circuit, a battery and a current detection device, the power module is connected with the battery through the switching circuit, and the method comprises the following steps: in the case that the power module in the energy storage module is in a target state, comparing the current of the battery in the energy storage module detected by the current detection device with a preset current corresponding to the target state to obtain a comparison result, and controlling the current of the battery according to the comparison result and the switching circuit to perform protection processing on the battery. By comparing the current of the battery with the preset current corresponding to the target state, the battery is protected, the overcharging or overdischarging of the battery can be prevented, the probability of overcharging or overdischarging of the battery is reduced, and the safety of the battery is improved.

The invention belongs to the technical field of energy storage cluster primary frequency modulation control, and particularly discloses an energy storage cluster primary frequency modulation control method and system based on analog quantity control, and the method comprises the steps: collecting a power grid frequency signal in real time, and calculating a frequency deviation; identifying a frequency disturbance type, dynamically determining a frequency modulation coefficient, and calculating a primary frequency modulation power instruction based on the frequency deviation and the frequency modulation coefficient; performing power amplitude limiting and distribution optimization on the primary frequency modulation power instruction according to the charge state of each battery pack in the energy storage cluster; and the optimized power instruction is converted into a 4-20 mA current signal, the 4-20 mA current signal is broadcasted and sent to all the energy storage converters, each energy storage converter dynamically adjusts a power distribution coefficient according to the difference between the own charge state and the average charge state of the cluster, and primary frequency modulation control of the energy storage cluster is completed. According to the invention, the problems of insufficient response speed, asynchronous cluster operation, unbalanced SOC management, insufficient anti-interference capability and insufficient disturbance adaptive capability in the prior art are solved.

The utility model discloses a high temperature downhole power supply device, including output interface, upper shell, lower shell, main drive power supply, spare drive power supply, control board power supply, main control board, drive board, single core cable input interface, main drive power supply, spare drive power supply all are arranged in the middle of upper shell and lower shell, single core cable input interface electricity is connected control board power supply, and power supply supplies power to main control board, and main control board controls drive board drive, and drive board controls the switch of main drive power supply, spare drive power supply respectively. The utility model discloses dual power module parallel operation and possesses the redundancy switching function, eliminates the single point failure risk, sets up main control unit, real -time monitoring battery voltage, current, temperature, prevents overcharge, overdischarge, overcurrent, short circuit, effectively overcomes the performance degradation and failure risk under the severe working condition such as high temperature, high pressure and strong vibration.

The utility model provides a high-voltage battery pack equalization control circuit, which comprises an isolation transformer module, a first bridge switch module, a second bridge switch module, an isolation driver module and a monitoring module, and is characterized in that energy transmission is realized by using a high-efficiency isolation transformer and an MOS (Metal Oxide Semiconductor) tube, the energy loss is reduced, and the service life of the high-voltage battery pack is prolonged. And meanwhile, the stability of energy conversion is ensured. The isolation driver module provides electrical isolation protection, avoids the influence of a high-voltage circuit on a low-voltage control circuit, improves the safety of the system, cooperates with the monitoring module, detects the current, voltage and balance state of a battery cell in real time, responds to an abnormal condition in time, and prevents a battery from being overcharged or overdischarged. The system adopts a modular design, and each battery pack is provided with a DC-DC circuit, so that the system can be conveniently expanded.

The present application relates to the technical field of hybrid vehicles, and discloses a hybrid vehicle control method and device, a hybrid vehicle and a storage medium, wherein after the vehicle is in an outdoor camping mode, if a forced charging instruction is received, the vehicle is controlled to enter a forced charging mode to perform forced charging operation on the vehicle battery; it is judged whether the vehicle reaches a terminal position, and the real-time power of the vehicle battery is obtained; when the real-time power reaches a preset power threshold and the vehicle does not reach the terminal position, the vehicle is controlled to enter a power maintaining mode to make the vehicle battery maintain the power at the preset power threshold. In the present application, the vehicle battery can be forced charged by the forced charging mode before reaching the terminal position, so as to ensure that the vehicle battery has sufficient power when reaching the terminal position, alleviate the power anxiety during outdoor camping, improve the user experience, and at the same time, timely switching to the power maintaining mode can avoid overcharging of the battery.

The application aims to provide an energy dynamic routing scheduling method for an electric composite turbocharging system, and belongs to the field of battery energy management scheduling.The application analyzes the target power demand of an inspiration all-in-one machine in real time, simultaneously polls the state of charge, voltage and temperature parameters of each distributed battery module, constructs a dynamic weighted evaluation model based on the above state parameters, calculates the contribution score of each battery module in real time, calculates the number of battery modules that need to be connected in parallel according to the target power demand, optimizes the target battery module according to the contribution score, and adopts a first-off-then-on timing control to control the on-off of the corresponding solid-state switch array.The energy dynamic routing scheduling method can effectively match the transient power demand of the MG motor, eliminate the risk of solid-state switch surge breakdown, inhibit the thermal imbalance of the multi-battery pack, and significantly improve the extreme safety of the system in all operating conditions and the whole life cycle.

The invention discloses an energy recovery voltage protection method for an electro-tricycle, belongs to the technical field of crossing of electric control and battery management of electro-tricycles, and aims to remarkably enhance driving safety and stability, avoid sudden interruption risks, abandon a hard overvoltage protection mode depending on a fixed threshold value in a traditional scheme and improve the safety of the electro-tricycle. Constructing a progressive power regulation mechanism, calculating an error between an actual voltage and a target voltage to obtain a proportional gain and an integral gain when a communication-free battery voltage is between a power limiting point and an overvoltage point, further determining a current value for maintaining the target voltage, and smoothly limiting the generated power; according to the technical scheme, vehicle running interruption caused by direct cut-off of MCU output is avoided, running safety under key working conditions such as abrupt slope slow descent and braking is guaranteed, protection for cutting off MCU output is triggered only when the voltage exceeds an overvoltage point, battery overcharge is completely eradicated, sudden rise of bus voltage of the whole vehicle is prevented, battery attenuation is effectively delayed, and electrical elements such as vehicle-mounted electric appliances are protected against damage.

This application belongs to the field of battery parameter estimation technology, and particularly relates to a battery SOC estimation method, apparatus, device, and medium based on Kalman filtering. The solution provided in this application addresses the problem that small errors in SOC estimation of lithium iron phosphate batteries caused by the battery voltage plateau period in traditional Kalman filtering methods have a significant impact. Based on the Kalman filtering algorithm, an improved formula is introduced, and the value of the voltage plateau period gain G in the improved formula is determined, effectively improving the SOC estimation accuracy for lithium iron phosphate batteries. Accurate SOC estimation ensures maximum battery utility, reduces costs, and prevents resource waste.

The application discloses a range extending drive mechanism, an aircraft and a battery pack assembly. The range extending drive mechanism comprises an internal combustion engine, a generator, an electric motor, a plurality of battery packs and a plurality of charging circuits corresponding to the battery packs respectively, and further comprises a first array switch and a controller. The internal combustion engine is connected with the generator; the generator is connected with the electric motor. In addition, the generator is connected with the plurality of charging circuits through the first array switch respectively; and the first array switch is connected with the controller, and is used for controlling the conduction and disconnection between the charging circuits and the generator.