100results about How to "Reduce charging power" patented technology

The invention provides a charging method which can increase the charging capacity of a battery array while controlling the voltage of each battery at or below the maximum specified voltage. The method of charging a battery array performs constant current, constant voltage charging of a battery array while detecting the voltage of each battery. The battery array is a plurality of series connected batteries. The charging method detects the voltage of each battery cell at a prescribed sampling rate. When the voltage of any battery cell exceeds a preset maximum specified voltage, charging power is reduced for constant current, constant voltage charging of the battery array.

A power storage system for a vehicle includes a battery, a temperature sensor, a battery heater, a charger, and a controller. The battery is configured to supply electric power to a motor for traveling of the vehicle, and configured to be charged with external power supplied from an external power supply. The temperature sensor is configured to detect a temperature of the battery. The battery heater is configured to raise the temperature of the battery. The charger is configured to be connectable with the external power supply, and deliver the external power to the battery and the battery heater, respectively. The controller is configured to perform charge control. The charge control is a control that charges the battery with the external power. The controller is configured to store a map. The map specifies, for each temperature of the battery, a ratio of a temperature-elevating power supplied to the battery heater to a maximum power of the external power at the time when a charging time is minimized. The controller is configured to calculate the ratio, using the map, from the temperature of the battery measured at the time when charging is started. The controller is configured to perform temperature regulation control during charging, using the temperature-elevating power corresponding to the calculated ratio. The temperature regulation control is a control that supplies a part of the external power to the battery heater during charging so as to raise the temperature of the battery.

An electric power storage system for a vehicle includes a temperature sensor configured to detect a temperature of a battery, a battery heater, a charger connectable with an external power supply and configured to deliver external power to the battery and the battery heater, and a controller. In the system, a first electric power is supplied to the battery heater when the state of charge of the battery is larger than a predetermined value and the temperature of the battery is equal to or lower than the predetermined temperature, and a second electric power is supplied to the battery heater when the state of charge of the battery is equal to or smaller than the predetermined value and the temperature of the battery is equal to or lower than the predetermined temperature. The first electric power is smaller than the second electric power.

An optical wireless communication device mounted in electronic equipment includes: a light-receiving element for receiving an optical communication signal; and a control unit that monitors a received light output of the light-receiving element. When the control unit determines that the received light output represents the optical communication signal, it selects and executes communication mode for the optical communication signal. When the control unit determines that the received light output does not represent the optical communication signal, it selects and executes charge mode in which the received light output is used as a charge power.

The present invention discloses an island parallel operation control method based on a high-capacity energy storage system. the improved droop control at the operation of the energy storage system considering the storage battery charge state is employed. the control method divides the system into three operation states according to the different charge states, a hysteresis controller is employed to obtain the changing droop factor to regulate the power state of the storage battery in real time to allow the storage battery to perform charging and discharging in advance according to the state of the storage battery so as to ensure that the storage battery is located at the safe operation range and allow the charge state of the storage battery to have the effect of equal distribution of the power. The defects are overcome that the safety operation range of the charge state of a traditional battery is small, the storage battery is easy to generate the overcharge and over-discharging phenomenon and the service life of the storage battery is low.

The invention discloses a high-intensity pulse current crack arrest discharge apparatus. The apparatus comprises a charge loop unit, a trigger loop unit and a discharge loop unit. The trigger loop unit is introduced; a relatively high-intensity pulse current is generated by utilizing a principle that a high-voltage pulse capacitor bank generates an instant strong pulse current during energy storage and discharge; and at the moment that the pulse current passes through a metal plate with a crack, joule heat can be generated at a crack tip under a bypass current concentration effect, and the local temperature of the crack tip is increased and even exceeds a melting point of a material, so that the crack tip is molten to form a molten hole, the curvature radius of the crack tip is increased, the stress concentration is eliminated, and crack emerging and spreading of the crack tip can be inhibited. The apparatus is low in charge power, high in instant output electric energy and mature in technical principle, has intelligence and selectiveness for crack repair, and is simple to operate and small in influence on surrounding environment.

The invention relates to a multi-time-scale community energy local area network energy scheduling method. The method includes following steps: step 1, performing long-term prediction energy optimization by employing a genetic algorithm, and generating prediction values of a scheduling plan of the community in the coming 24 hours according to historical data of community photovoltaic output and load demand; and step 2, comparing real-time operation data of community photovoltaic output and load demand and the prediction values of the scheduling plan obtained in step 1, calculating a community deviation value, and performing real-time short-time energy optimization of the community photovoltaic output and load demand according to the community deviation value. According to the method, uninterrupted short-term energy optimization is performed with the combination of real-time operation data of the total photovoltaic output and the total load demand of a certain community and the long-term scheduling plan, the practical operation approaches to the scheduling plan, the algorithm solution space is compressed and optimized, the algorithm efficiency is improved, and the influence of uncertainty of photovoltaic output and load demand can be reduced with the combination of long-term and short-term energy optimization.

The embodiment of the invention provides a battery charging method and device and a battery system. The embodiment of the invention acquires the state information of the battery, and judges whether the condition of reducing the charging power of the battery is satisfied or notaccording to the state information of the battery, when it is determined that the condition of reducing the charging powerof the battery is satisfied, the charging power of the battery is reduced, and further, the battery is charged with the reduced charging power. Therefore, the embodiment of the invention slows down the loss rate of the battery in the cycle charging process to a certain extent, and prolongs the cycle life of the battery.

A hybrid vehicle includes an engine, a first rotating electric machine, a second rotating electric machine coupled to drive wheels of the hybrid vehicle, a planetary gear mechanism configured to mechanically couple the engine, the first rotating electric machine, and the second rotating electric machine, an electric power storage device configured to perform charging and discharging with the first rotating electric machine and second rotating electric machine, and an electronic control unit configured to, in a case where cruise control is requested or in a case where deceleration torque is requested by the cruise control, execute motoring control and simulated stepped gear shift control.

The embodiment of the invention provides a charging circuit, a charging processing method, electronic equipment and a storage medium. The charging circuit comprises a charging interface, a detection module and a control module, wherein the detection module detects the state of a charging interface in real time; the control module obtains the state of the charging interface through the detection module; when the charging circuit is in a fast charging mode and the charging interface is in an abnormal state, the control module controls the charging circuit to switch from the fast charging mode toa normal charging mode so as to reduce the charging power passing through the charging interface; and when the charging circuit is in the normal charging mode and the charging interface is in a normal state, the control module controls the charging circuit to switch from the normal charging mode to the fast charging mode so as to increase the charging power passing through the charging interface.The charging interface is prevented from being damaged, entered impurities are enabled to be removed through the reduced charging power at the same time, and the charging circuit is enabled to switchfrom the normal charging mode to the fast charging mode after the impurities are removed so as to increase the charging power passing through the charging interface.

The invention discloses an uninterrupted 12V direct-current power system which comprises an alternating-current input power distribution unit, a high-frequency rectifying circuit and a direct-current output power distribution unit, wherein the alternating-current input power distribution unit, the high-frequency rectifying circuit and the direct-current output power distribution unit are sequentially connected in series. The input end of the direct-current output power distribution unit is in bypass connection with a 12V storage pack charging voltage-stabilizing circuit and a 12V iron-lithium battery pack. The uninterrupted 12V direct-current power system is adopted, the battery pack is configured according to a machine frame and is synchronously built along with a server, and accordingly the charging power of batteries is reduced. A PWM rectifying technique is adopted for a power module, compared with a traditional power frequency UPS power system, the harmonic content of a power system loop is reduced, and requirements for capacity of each stage of power distribution system, cables and capacity of a front end backup generator set are reduced.

The invention discloses a quick and slow switched wireless charge device for an electric car and a method thereof. The quick and slow switched wireless charge device for the electric car comprises a high-frequency power supply device, an automatic lifting lever, a high-frequency resonator, a high-insulativity sealing box, a receiving resonator, a mechanical controllable single-pole double-throw switch, a high-efficiency lithium battery pack and a high-energy density and large-capacity super capacitor part. When a user selects a quick charge mode, the single-pole double-throw switch is switched into one path of the high-energy density and large-capacity super capacitor, the automatic lifting lever ascends, and the distance of resonance coils is reduced, so that quick charge of the capacitor is achieved. When a user selects a slow charge mode, the single-pole double-throw switch is switched into a lithium battery pack, the lifting lever descends, and the distance of the resonance coils is increased, so that slow charge of the lithium battery pack by a power supply is achieved. By adopting the quick and slow switched wireless charge device for the electric car disclosed by the invention, a user can independently select the charge mode of the electric car according to the desire. By adopting the device, the electric car is more flexible and convenient to wirelessly charge after the electric car is popularized.

The invention discloses a charging method and system, which are applied to an energy storage power station. The charging method comprises the steps of entering a charging monitoring mode when an energy storage bidirectional converter is detected to charge a battery pack; obtaining battery state information, wherein battery state parameters of the battery pack are detected; and performing batterycharging control, wherein whether the detected battery state parameters are within a preset numerical range or not is judged, if yes, the step of obtaining the battery state information is carried out, and if not, a power adjustment instruction is sent to the energy storage bidirectional converter for enabling the energy storage bidirectional converter to reduce charging power after receiving thepower adjustment instruction and charge the battery pack with the reduced charging power; and whether preset charging stop conditions are met or not is judged, if not, the step of obtaining the battery state information is carried out, and if yes, the charging monitoring mode exits and a charging stop instruction is sent to the energy storage bidirectional converter. By adopting the scheme, the influence of a charging process on the cycle service life of the battery pack can be reduced.

The invention relates to an electric automobile charging power regulating method and system. The method includes firstly determining scheduling plan power of electric automobile charging power, and then solving actual charging power of various electric automobiles under demand response management according to the scheduling plan power, wherein the scheduling plan power is related to electric load,the higher the electric load is, the lower the scheduling plan power is, the actual charging power is positively correlated to the scheduling plan power, the lower the scheduling plan power is, the lower the actual charging power of the electric automobile is. The charging power is regulated, particularly the charging power of the electric automobile is reduced at the electricity utilization peak, and the charging power of the electric automobile is not limited in the valley of electricity utilization. The system can achieve orderly guide and real-time power control in charging of the electric automobile, reduces charging load to a certain degree at the electricity utilization peak on the basis of the full use of the existing distribution network resources, realizes peak shaving of the power grid, stabilizes the difference between the peak and the valley of the power grid, reduces load fluctuation of the power grid, and improve stability of the power grid.

The invention discloses an energy distribution method of a vehicle fuel cell. When the SOC of a storage battery reaches the lowest limit value, the fuel cell is started by preferentially and efficiently reducing the working area through the fuel cell, so that the cell is rapidly charged into the SOC; then the fuel cell is started to be charged by selecting the point closest to the required power of the whole vehicle in the efficient area; the charging power of the fuel cell to the storage battery is low, secondary conversion of chemical energy and electric energy is reduced, and the economy isimproved; and meanwhile, the problem that a power system cannot meet the requirements of the whole vehicle when the storage battery is lower than SOCmin for a long time is solved.

The invention relates to an AC and DC charging method for an electric mobile charging vehicle. According to the method, when supplementing energy in a trough electricity period, by calculating and controlling the charging power, the total trough electricity duration is fully used to the greatest extent. Specifically, when supplementing energy for a power battery of the electric mobile charging vehicle by continuously adopting a DC charging mode within the range of the trough electricity duration, the DC charging power is reasonably controlled to ensure that the power battery is fully charged after the trough electricity period ends; and when supplementing energy for an energy storage battery of the electric mobile charging vehicle by continuously adopting an AC charging mode within the range of the trough electricity duration, the AC charging power is reasonably controlled to ensure that the energy storage battery is fully charged after the trough electricity period ends. By adopting the charging method disclosed by the invention, the damages caused by long-time high-current charging to the battery can be reduced, the charging cost can be reduced, the characteristics of low electricity price and long time in the nighttime trough period can be fully utilized, the service life of the battery can be prolonged, and the economic performance of the electric mobile charging vehicle can be improved.