17results about How to "Avoid overcharging" patented technology

The invention discloses a commercial vehicle full-working-condition self-adaptive braking energy management method, device and equipment based on vehicle cloud collaboration and a storage medium, and relates to the technical field of new energy automobiles, and the method comprises the steps that load sensing data, vehicle position data and battery state data are acquired; on the basis of the load sensing data, the vehicle position data and a predefined vehicle dynamics model, recoverable energy under a corresponding vehicle planning path is predicted, and energy prediction information is determined; calculating corresponding electric braking force and mechanical braking force based on the battery state data and the energy prediction information, and determining an electric braking force distribution instruction and a mechanical braking force distribution instruction; and based on the electric braking force distribution instruction and the mechanical braking force distribution instruction, a vehicle is controlled to conduct cooperative management on braking energy. According to the method, the corresponding recoverable energy is predicted by fusing the vehicle cloud collaborative data, the distribution of the electric braking force and the mechanical braking force is dynamically optimized, and efficient self-adaptive braking energy management is achieved.

The utility model discloses a relay, a series-parallel connection switching circuit, a vehicle and a charging system. The contact part of the relay comprises at least two switches, all the switches in a first switch group formed by the at least two switches share a movable contact piece to form a public movable contact piece, and static contact pieces of all the switches are located on the two sides of the public movable contact piece respectively in the action direction of the public movable contact piece. The common movable contact is suitable for being closed with the static contact on any side or forming intervals with the static contacts on the two sides in the action direction of the common movable contact, so that each switch of the contact part has three states, and the push part and the driving part of the relay enable the contact part to be switched among the three states. The relay with at least three switches is applied to the series-parallel switching circuit, the vehicle and the charging system. By adopting the technical scheme, three-state switching of multiple switches can be realized or a material basis is provided for the three-state switching, and higher integration and a more compact structure are realized.

This invention relates to power management technology for new energy vehicles, and discloses an intelligent charging system and method for low-voltage batteries in new energy vehicles, comprising the following steps: S1. Real-time acquisition of operating data of the low-voltage battery and vehicle status data; S2. Calculation of the current state of health (SOH) of the low-voltage battery based on historical data; S3. Establishment and updating of a personalized power consumption behavior model for the vehicle, obtaining a load feature vector characterizing its idle power consumption mode; S4. Based on the current health state, the load feature vector, and the current voltage, prediction of the voltage change curve of the low-voltage battery over a future period using a voltage decay prediction model. Based on the load used by the low-voltage battery in different vehicles, a strategic charging solution is generated for the vehicle, while optimizing the energy flow management of the entire vehicle. By optimizing the timing of charging and proactive, predictive charging, the availability and efficiency of vehicle charging applications are improved.

The utility model discloses a relay, a series-parallel connection switching circuit, a vehicle and a charging system. The relay comprises a contact part and a push part. The contact part comprises at least two switches, and the at least two switches form a switch set; in the switch set, when any one of the at least two switches is switched on, the other switch is switched off; the pushing part comprises a rotating piece rotating around a rotating axis; the rotating piece directly or indirectly pushes the movable contact pieces of the switches of the contact part to be connected or disconnected with the static contact pieces in the direction perpendicular to the extension direction of the rotating axis; and the movable contact pieces of the switches in the switch set are located at the same position along the extension direction of the rotating axis. The series-parallel switching circuit, the vehicle and the charging system adopt the relay. By adopting the above technical scheme, the switch-on or switch-off of more than two switches can be controlled through one pushing part, and at least two of the switches can be in different states.

The application discloses a battery pack voltage equalization control system, method and battery pack. The control method comprises a charging equalization control process and / or a discharging equalization control process. The charging equalization control process comprises detecting the voltage of each battery module, obtaining a battery module with the highest voltage, controlling the battery module with the highest voltage to bypass and controlling the remaining battery modules to continue dynamic equalization charging. The discharging equalization control process comprises detecting the voltage of each battery module in a discharging state, obtaining a battery module with the highest voltage, controlling the battery module with the highest voltage to increase the discharging current of a battery cell for discharging, and controlling the battery cells of the remaining battery modules to dynamically equalize discharging at a normal discharging current.

This application provides a battery charging thermal management control method and a new energy vehicle, relating to the field of vehicle management technology. The method includes: responding to a charging start signal from a target vehicle; acquiring the battery temperature, current state of charge (SOC) parameters, and current ambient temperature of the power battery on the target vehicle; determining a target charging thermal management mode from a set of preset charging thermal management modes based on the battery temperature and the current ambient temperature; determining the current target charging current of the power battery based on the battery's operating temperature range, the current SOC parameters, and the target charging thermal management mode; and during the charging process of the power battery, using the target charging thermal management mode to control the thermal management system of the target vehicle to control the temperature of the power battery, ensuring that the battery temperature remains within the corresponding operating temperature range. This application avoids unnecessary energy loss from the power battery, thereby reducing the overall vehicle charging energy consumption.

The present application relates to the technical field of charging control, and particularly relates to a battery intelligent charging scheduling and dynamic power management method and system for a battery swap station, comprising a data acquisition module, a charging scheduling decision module, a charging control execution module and a temperature control cooperation module, the data acquisition module acquires the SOC, charging state, voltage, temperature and BMS charging permission flag of the battery; the charging scheduling decision module performs multi-dimensional safety inspection on the battery, calculates three-level dynamic weight values and sorts them, and selects a target charging battery according to a limit mode; the temperature control cooperation module calculates temperature control power consumption and feeds it back to the decision module, and obtains available charging power by deducting the temperature control power consumption and safety redundant power from the total power of the cabinet machine; the charging control execution module turns on the charger for the target battery and sets four-stage curve charging parameters, and adjusts the charging stage in real time to protect the battery. The present application can realize the cooperative management of charging and temperature control, and improve the battery turnover efficiency and charging safety.

This invention discloses a method, system, and storage medium for capacity compensation of lithium-ion battery cells. The method includes: constant current charging of the lithium-ion battery cell under test to a charging cutoff voltage, then switching to constant voltage charging until the charging current drops to the cutoff current; constant current discharge of the fully charged cell to a first cutoff voltage using a first discharge current, recording the released capacity as the main discharge capacity; after the main discharge, allowing the cell to rest for a preset time; continuing constant current discharge of the rested cell to a second cutoff voltage using a second discharge current, recording the released capacity as the reference discharge capacity; and calculating the compensated capacity using a capacity compensation formula based on the main discharge capacity, the reference discharge capacity, and a pre-determined reference discharge capacity benchmark value. This invention can eliminate the influence of polarization differences caused by ambient temperature fluctuations on the capacity test results during capacity testing, improving the accuracy of capacity testing.

This invention provides a parking charging control method and system for plug-in hybrid heavy-duty trucks, comprising the following steps: real-time monitoring of vehicle status signals; when the vehicle status signals meet preset parking charging conditions, disabling the auxiliary braking function of the auxiliary brake switch and enabling the auxiliary brake switch to adjust parking charging parameters; acquiring the current gear signal of the auxiliary brake switch and resolving the parking charging parameters corresponding to the current gear signal according to a preset mapping relationship; controlling the engine to charge the power battery until the real-time state of charge of the power battery reaches the target state of charge. This invention reuses the vehicle's existing auxiliary brake switch, enabling the switch to switch its function when parking charging conditions are met, transforming it from an auxiliary braking control function to a parking charging parameter adjustment function, thus achieving convenient adjustment of parking charging parameters without adding additional hardware.

A novel tapless resonant push-pull photovoltaic energy storage inverter topology is disclosed, relating to the field of energy storage system topology control technology, specifically a novel tapless resonant push-pull photovoltaic energy storage inverter topology. It includes a photovoltaic boost MPPT circuit, a DC-AC bidirectional inverter circuit, and a battery-side DC-DC tapless resonant push-pull bidirectional isolated charging circuit. The photovoltaic boost MPPT circuit is used to increase the DC voltage of the photovoltaic panels and perform maximum power point tracking control. The DC-AC bidirectional inverter circuit performs bidirectional DC-to-AC conversion through three independent T-type three-level circuits, each independently controlled, with low harmonic output current. The battery-side DC-DC tapless resonant push-pull bidirectional isolated charging circuit includes a tapless transformer and a push-pull circuit. Through innovative tapless resonant push-pull circuit, dual-transformer interleaved control technology, and three-level inverter circuit design, it achieves efficient power conversion, optimized battery charge and discharge management, and reduced high-frequency ripple and electromagnetic interference, thereby improving the overall efficiency, stability, and reliability of the photovoltaic energy storage system.

The utility model discloses a voltage automatic detection circuit of an intelligent battery charger, which comprises a power supply input module, a main control chip, a voltage detection module, a charging control module and a battery module, the battery module is connected with a BATT pin of the main control chip, the voltage detection module is used for monitoring the voltage of the battery module, and the charging control module is used for controlling the charging control module. And the charging control module is connected with the battery module and feeds back a voltage signal to the main control chip, and is used for receiving a control signal from the main control chip and adjusting the charging current of the battery module. According to the utility model, the power supply input module provides stable voltage for the master control chip, and the voltage detection module enables the master control chip to sense the voltage change of the battery in real time and dynamically adjust the charging mode, thereby avoiding the over-charging or under-charging of the battery; the charging control module adjusts the charging current according to the signal of the main control chip, realizes quick charging when the voltage is low and enters a trickle mode when the voltage is close to full charge, prevents the battery from being damaged by overlarge current, improves the charging efficiency, and prolongs the service life of the battery.

The utility model relates to the field of intelligent home equipment, and particularly discloses a self-powered intelligent door lock which comprises a lock body, a photovoltaic power generation assembly is arranged in the lock body, and the photovoltaic power generation assembly comprises an energy storage battery used for supplying power to the door lock, a photovoltaic panel used for generating power and a controller used for adjusting voltage. The lock body is provided with a light-transmitting panel right facing the photovoltaic panel, the surface of the light-transmitting panel is covered with a light shielding plate, a rotating shaft penetrates through one end of the light shielding plate, the surface of the lock body is fixedly connected with a rotating seat, and the rotating seat is provided with a rotating groove allowing the rotating shaft to be rotationally connected. The self-powered intelligent door lock has the effect of preventing the battery from being overcharged.

This invention relates to the field of battery testing technology, and more particularly to a multi-channel battery charge-discharge testing system and method. The method includes the following steps: acquiring voltage data of each battery cell in a multi-channel battery; performing voltage gradient stratification processing on the voltage data of each battery cell to divide the battery cell into multiple voltage intervals; detecting the number density of battery cells within each voltage interval to generate a voltage gradient distribution map; collecting the current distribution coefficients at each connection point of the multi-channel battery; performing current distribution difference analysis on the current distribution coefficients to calculate the actual current distribution ratio of each cell at different charge-discharge stages, generating current distribution difference data; and collecting overall temperature change data of the multi-channel battery during the charge-discharge process, as well as local temperature data of each battery cell. This invention, through battery testing technology, enables the analysis and prediction of the charge-discharge performance of multi-channel batteries, thereby improving the accuracy of multi-channel battery charge-discharge performance evaluation.

The invention provides a liquid flow energy storage battery pre-charging control device and method in the technical field of electrochemical energy storage. The device comprises a controller U1, a direct-current fuse FU1, a direct-current fuse FU2, a direct-current lightning protection device F1, an alternating-current lightning protection device F2, a direct-current contactor K1, an alternating-current contactor K2, a direct-current isolating switch Q1, an alternating-current isolating switch Q2, a direct-current pre-charging resistor R1, a direct-current pre-charging resistor R2, an alternating-current pre-charging resistor R3, an alternating-current pre-charging resistor R4 and a direct-current filter EMC1. The invention relates to a direct-current bus capacitor bank circuit, which comprises an alternating-current filter EMC1, an alternating-current filter EMC2, a direct-current bus capacitor bank Cbank, an alternating-current filtering loop Cfilter, a power module M1, a rectifying circuit M2 and an alternating-current reactance group Lbank. The system has the advantages that the integration level and the comprehensive performance of the system are greatly improved.

The application relates to the technical field of power battery control, in particular to a method and device for preventing overcharging of a power battery, a vehicle, a medium and a program product, wherein the method comprises the following steps: acquiring a current charging capacity of the power battery; judging whether the power battery meets certain overcharge prevention conditions according to the current charging capacity and a maximum charging capacity of the power battery; if the power battery meets the certain overcharge prevention conditions, acquiring at least one state parameter of a driving motor and a fuel cell system, matching an electric energy consumption strategy of a vehicle for preventing overcharging by combining the at least one state parameter, the current charging capacity and the maximum charging capacity, and controlling the vehicle to execute the electric energy consumption strategy. According to the application, the current charging capacity and the maximum charging capacity of the power battery are monitored in real time, the risk that the power battery approaches or reaches an overcharging state is found in time, the service life is prolonged, and the safety of the vehicle is improved.

The invention relates to the technical field of charging stations, and discloses a movable charging station which comprises a base, a walking moving mechanism is installed on the base, a steering adjusting mechanism is installed above the walking moving mechanism, and a charging station assembly is installed on the steering adjusting mechanism. By integrating the walking moving mechanism and the steering adjusting mechanism, the mobile charging station can easily move among different places and adapt to various environmental conditions, so that the limitation of a traditional fixed or manual mobile charging station is overcome. The automatic moving and positioning functions reduce the dependence on manual operation, the labor cost is saved, and normal operation can be kept under the severe weather condition. Changes of charging requirements are quickly responded, and the position can be quickly adjusted according to the position of the user and the charging requirements, so that waiting time of the user is shortened, and user satisfaction is improved. The use efficiency and the user experience of the charging station are improved, and the charging station has good environmental adaptability and intellectualization characteristics.

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.