38results about How to "Prevent overcharging" patented technology

The invention discloses an energy storage type unmanned aerial vehicle control system which comprises an unmanned aerial vehicle provided with an energy storage processor, a storage battery, a light energy power supply unit and a wind energy power supply unit, and the light energy power supply unit and the wind energy power supply unit are connected with the storage battery. The wind energy power supply unit comprises fan blades, a variable pitch motor connected with the fan blades, an anemoscope and an energy storage controller, the energy storage processor is connected with the photovoltaic controller and the energy storage controller, and the wind energy power supply system further comprises a temperature detection unit, a communication unit and a positioning unit. The invention belongs to the technical field of unmanned aerial vehicles, particularly provides an energy storage type unmanned aerial vehicle control method and system and a storage medium, and is used for solving the defects that an unmanned aerial vehicle in the prior art is poor in battery cruising ability and cannot supplement electric energy in time.

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.

The utility model discloses an LLC overshoot protection circuit of an energy storage charging pile. The LLC overshoot protection circuit comprises a control circuit, an input circuit, a voltage sampling detection circuit, a resonant cavity discharging circuit and a rectifier bridge. Wherein the voltage sampling detection circuit and the resonant cavity discharge circuit form a protection circuit; the input circuit is connected with one end of the rectifier bridge, the other end of the rectifier bridge is respectively connected with the voltage sampling detection circuit and the resonant cavity discharge circuit, and the resonant cavity discharge circuit is respectively connected with the control circuit and the voltage sampling detection circuit. According to the utility model, the voltage sampling detection circuit, the resonant cavity discharge circuit and the rectifier bridge are arranged to protect the charging pile from being damaged by overcharge, so as to ensure the safe and stable operation of the charging pile. The voltage sampling detection circuit and the resonant cavity discharging circuit form a protection circuit which is used for monitoring and adjusting the voltage of the charging pile so as to prevent overcharging, the safety and reliability of the charging pile can be improved, and therefore the charging pile and charging equipment are protected against damage.

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.

The invention belongs to the technical field of battery charging management and control, and particularly relates to a power battery charging management and control method and system.The method comprises the steps that after a battery is connected with a charger, a battery management system obtains the current state of the battery, and target charging current is determined according to the battery state; the battery management system sends a charging instruction to the charger based on the obtained target charging current; the charger adjusts the charging current to the target current according to the received charging instruction, and charges the battery with the adjusted charging current; in the charging process, the battery management system monitors the state of the battery in real time; the battery management system judges whether a preset charging cut-off condition is met or not according to the state of the battery; when the battery management system judges that the charging cut-off condition is met, a charging end instruction is sent to the charger; or after the battery management system receives a charging stopping message sent by the charger, a charging ending instruction is sent to the charger. The charging time is shortened and the charging efficiency is improved.

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.

The invention relates to a battery charging control method, a charging and discharging control system and a discharging control method. The battery charging control method provided by the invention is applied to a battery system comprising at least one group of batteries, and comprises the following steps: acquiring charging power of the batteries, and obtaining first charging current of the batteries according to the charging power; correcting the first charging current of the battery according to a pre-configured first charging correction coefficient to obtain a second charging current of the battery; determining a second charging correction coefficient of the battery according to the required charging amount of the battery; and correcting the second charging current of the battery according to the second charging correction coefficient of the battery to obtain a third charging current of the battery, and charging the current battery pack based on the third charging current. According to the scheme, overcharge of the battery can be avoided, the consistency of the battery packs in the battery system is improved, reliable operation of the battery system is facilitated, and the service life of the battery system is prolonged.

Disclosed in the present invention are a safe lithium-ion battery and a manufacturing method therefor. A battery positive electrode material is lithium iron phosphate, or a mixture of lithium iron phosphate and one or more of lithium nickel cobalt manganese oxide, lithium manganate, and lithium cobalt oxide, or a mixture of lithium iron phosphate and one or two of lithium manganese iron phosphate and lithium-rich lithium iron oxide. The lithium iron phosphate accounts for more than 60% (mass ratio). In the manufacturing process of an electrode plate (a positive plate or a negative plate), a redox shuttle agent is added as an additive. The additive can start a redox shuttle reaction at a specific voltage to convert redundant electrical energy into thermal energy; continuous charging can be tolerated under a voltage of 3.8-3.95V, thereby improving safety performance of the battery.

The invention belongs to the technical field of fluid working systems, and provides a hydraulic control system for a low-horsepower tractor. According to the hydraulic control system for the low-horsepower tractor, each clutch pressure control mechanism is provided with a clutch electromagnetic valve, each clutch electromagnetic valve is provided with a corresponding energy accumulator, and hydraulic oil needs to pass through the energy accumulators corresponding to the clutch electromagnetic valves before flowing into the clutch electromagnetic valves; the clutch electromagnetic valve provides hydraulic oil for direct drive of the execution structure. Each clutch electromagnetic valve is provided with a corresponding energy accumulator, and the energy accumulators provide power for a gearbox pressure system. The energy accumulator absorbs pressure impact during gear shifting of the hydraulic system, and pulsation is eliminated; the energy accumulator has the characteristic of rapid oil drainage, the gear shifting response time of the gearbox can be shortened, the pause feeling is avoided, and the driving comfort is improved; the clutch electromagnetic valve direct drive provides execution structure hydraulic pressure, control valve components are reduced, and the control precision and the response speed are improved.

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 invention discloses a distributed electric drive axle assembly, which relates to the technical field of electric drive axles, and comprises a first wheel, a second wheel, a first drive system, a second drive system, a first disengagement mechanism, a second disengagement mechanism and a third disengagement mechanism, the first driving system comprises a first motor, a first speed reducing mechanism and a first half shaft; the second driving mechanism comprises a second motor, a second speed reducing mechanism and a second half shaft; the first disengaging mechanism, the second disengaging mechanism and the third disengaging mechanism all have an open state and a closed state, the first disengaging mechanism is arranged on the first half shaft, the second disengaging mechanism is arranged on the second half shaft, and the third disengaging mechanism is arranged on the connecting shaft between the first speed reducing mechanism and the second speed reducing mechanism. Through mutual cooperation of the first disengaging mechanism, the second disengaging mechanism and the third disengaging mechanism, the working mode of the electric drive axle assembly can be flexibly adjusted according to different working conditions, so that the electric drive axle assembly adapts to different working scenes, and the use efficiency of the electric drive axle assembly is effectively improved.

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 invention discloses a mobile phone charging reminding software system, which belongs to the technical field of application software and comprises a charging module, a reminding module and a display module. The charging module comprises a state judgment unit, a voltage detection unit, a mobile phone information unit and a time prediction unit; the prompt module comprises an electric quantity detection unit, a prompt setting unit, a function transfer unit and a complete body type unit, and the display module comprises a predicted time length unit and an actual time length unit. A certain electric quantity numerical value can be set through the prompt setting unit for prompting, when the set numerical value is reached, the device gives out prompts including vibration prompt and acousto-optic prompt, the electric quantity numerical value can be set between 1% and 100%, the charging duration can be flexibly prompted according to the predicted duration, energy conservation and emission reduction are facilitated, overcharging is prevented, and the charging efficiency is improved. And the service life of the battery is prolonged.

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 charging circuit comprises a switching power supply circuit and a super capacitor, the switching power supply circuit is connected with the super capacitor, the switching power supply circuit is a PNP type switching power supply circuit adopting a flyback topological structure, the primary side and the secondary side of a transformer of the PNP type switching power supply circuit are in common ground, and the secondary side of the transformer of the PNP type switching power supply circuit is connected with the super capacitor. The switching power supply circuit provides constant current for the super capacitor when starting to charge the super capacitor, so that the voltage of the super capacitor is linearly increased, and when the super capacitor is charged to a target voltage, the switching power supply circuit controls the voltage of the super capacitor to keep constant, so that the super capacitor is prevented from being overcharged, and meanwhile, the voltage of the super capacitor is kept constant. And the PNP type switching power supply circuit cannot be charged reversely, so that the technical problems that the charging current cannot be effectively controlled and the reverse charging cannot be avoided in the charging process of the existing super capacitor are solved.

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.

The invention discloses an LDO circuit and method for preventing overcharging of residual power hot-swap output under no-load, comprising a comparator and a pulse signal generating module; the pulse signal generating module is connected to the comparator and connected to a low static power consumption circuit through a PMOS tube; a first amplifier outputs a voltage signal based on an external reference voltage and a feedback voltage, and outputs a driving voltage through an NMOS tube and the low static power consumption circuit; a second PMOS tube generates and controls an output voltage based on an external input voltage and a driving voltage; a comparator compares the external input voltage and the output voltage, and outputs a third voltage signal to the pulse signal generating module; the pulse signal generating module generates a second voltage signal based on the third voltage signal; a pulse signal is generated by the comparator and the pulse signal generating module to modulate the gate of the second PMOS tube, so as to prevent overcharging of the output voltage when the external input voltage residual power hot-swap is powered on under no-load.

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 provides a formation method of a zinc-silver reserve battery pole plate. The formation method comprises the following steps: S1, assembling a formed battery; s2, connecting a plurality of formed batteries in series, and performing constant-current charging until the theoretical capacity of the formed batteries is reached; and S3, connecting the plurality of formed batteries obtained in the step S2 in parallel, and charging by utilizing alternating voltage until the charging current density is less than or equal to a theoretical minimum value. According to the method, the positive plate and the negative plate of the zinc-silver reserve battery are formed, the positive plate and the negative plate are subjected to constant-current charging to the theoretical capacity and then are subjected to alternating voltage charging until the charging current density is smaller than or equal to the theoretical minimum value, and the positive plate and the negative plate can be prevented from being overcharged by controlling the voltage peak value of the alternating voltage not to exceed the voltage value corresponding to the theoretical capacity; zinc dendritic crystals caused by overhigh voltage of the formed battery are avoided, the formation efficiency is ensured, and the energy loss of the negative electrode is reduced; and moreover, the positive electrode and the negative electrode are prevented from being overcharged, the electrolytic water reaction during overcharging can be avoided, frequent observation and supplement operation on the residual amount of the formation electrolyte are avoided, and the operation difficulty of the formation process is reduced.

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 application discloses a portable intelligent lunch box circuit, which comprises a main control circuit, a switching power supply circuit, a power supply control circuit, an electric quantity detection circuit, a battery management circuit, a heating circuit and a temperature detection circuit; the power supply control circuit is connected with the switching power supply circuit, the battery and the heating circuit respectively; the battery is connected with the electric quantity detection circuit, the battery management circuit and the switching power supply circuit respectively; and the main control circuit is connected with the power supply control circuit, the electric quantity detection circuit, the heating circuit and the temperature detection circuit respectively. The portable intelligent lunch box circuit has both mains power supply and battery power supply, and is more convenient to use.

This utility model discloses a step-down charging module for a solar charger, comprising: a photovoltaic input terminal; a multi-stage input filter network disposed at the photovoltaic input terminal; a P-channel MOSFET switch connected to the photovoltaic input terminal; a first Schottky diode (D2); a controller (U4); a second Schottky diode (D1) connected between the output terminal of the first Schottky diode (D2) and ground; an energy storage inductor (LX3); a current sampling resistor (RCS) connected in series between the energy storage inductor (LX3) and the battery terminal; output filter capacitors (C32, C33) connected between the battery terminal and ground; and an RC absorption network connected between the output terminal of the first Schottky diode (D2) and ground. This utility model has the following advantages: this step-down charging module for a solar charger features high efficiency, high reliability, low noise, and high-precision charging control.