219results about How to "Increase charging power" patented technology

The invention discloses an Li traction battery series parallel change-over charging method and a charging device. The charging device comprises a power main loop comprising a rectifier circuit, a DC filtering capacitor, a pre-charging circuit, a voltage sensor, a switch bridge circuit, a charging current sensor and a series parallel change-over switch, a control circuit board comprising a parallel branch signal unit, a switch signal drive control unit, a coil signal circuit, a voltage current signal circuit, a control processor and a signal display unit, a serial charging circuit comprising a filter inductor, a filter capacitor and an output voltage sensor, and a parallel charging circuit comprising a primary coil, a feedback coil, an iron core, a plurality of secondary coils of a multi-winding transformer and a plurality of series parallel charging unit. The pre-charging, serial charging and parallel charging are carried out by the charging method according to a set pre-charging voltage value and an end voltage value. The method and the device provided by the invention reduce the cost and volume of charging devices, maintain the balance of charging capacity of every Li traction battery electrical core, ensure adequate protection and best working status for each battery unit and improve safety and service life cycle of Li traction battery.

The invention discloses a voltage transformation circuit with a wide voltage output range and a DC charging pile. The voltage transformation circuit comprises multiple DC/DC conversion units and a series and parallel switching unit, wherein the multiple DC/DC conversion units are used for carrying out voltage transformation on inputted DC and outputting the DC; and the series and parallel switching unit is electrically connected with the output end of each DC/DC conversion unit for switching the output ends of the multiple DC/DC conversion units in serial and parallel electrical connection modes to enable the voltage output range of the voltage transformation circuit to be increased. The DC charging pile comprises the voltage transformation circuit with the wide voltage output range. The DC charging pile disclosed by the invention has a large output voltage range and can be compatible with various electric vehicles with different charging voltage.

An electrical apparatus is provided including an electrical drive system and an electrical machine. The electrical machine includes a rotor, a first separate multi-phase stator winding and a second separate multi-phase stator winding. The drive system includes a first multi phase bridge inverter connected to the first multi-phase stator winding and which is adapted to be connected to a line voltage supply by a connection means when charging a battery. The apparatus further includes a second multi-phase bridge inverter connected to the second multi-phase stator winding and to the battery. A battery can be charged without the need of a specific charger and charging with galvanic isolation is provided.

The invention discloses a multi-energy flexible control system and method for urban and rural residents based on demand side response. During application, after receiving the control command issued by the grid end through the special electrical network, the primary station of demand side response performs the full-view positioning for load shedding of power grid in the whole district and control path setting according to the electricity information of residents and load priority of users, and quickly and precisely locates the scope of residents joining the load control, control degree of adjustable load and control time of alternative operation of controllable load. On a basis of guaranteeing the normal operation of load closely related to the lives of residents, the whole cross-regional automatic demand side response flexible regulation control is realized through remotely adjusting the parameters of adjustable temperature load, etc. and controlling the operation time of controllable load. Meanwhile, the energy node characteristics and coordination relationship of residential electricity equipment, distributed power source and stored energy are comprehensively considered to dynamically adjust the input and output amount of network source, distributed power source and stored energy, so as to match the demand side response requirements and electricity requirements, and improve the use ratio of distributed power source to the greatest extent from the view of supply side.

In a power control system including a first controller configured to control supply of power from a photovoltaic module to a plurality of loads and a second controller configured to control charge/discharge of a storage battery, which is one of the plurality of loads, the first controller controls output following power consumption by the plurality of loads, and the second controller increases, during a self-sustaining operation, charging power of the storage battery and detects output fluctuation from the photovoltaic module or from the first controller along with the increase in the charging power, then based on the detected output fluctuation, controls charge of the storage battery, thus, even if connection to the grid is disconnected, supply power may be replenished by the load power used for supply to the predetermined loads, thereby allowing a stable power supply to the other loads.

A method and system for controlling charge and discharge of a battery are provided. The method includes detecting a battery temperature using a temperature sensor and determining, by a controller, a state of charge (SOC) of the battery, a first maximum discharging power value, and a first maximum charging power value that correspond to the battery temperature. The controller selects a lowest SOC from among at least one SOC to use a maximum discharging power equal to the determined first maximum discharging power value and resets the first maximum charging power value to a second maximum charging power value that corresponds to the selected lowest SOC. Further, the controller is configured to perform a charge and a discharge of the battery with the reset second maximum charging power value at the detected battery temperature.

The invention relates to a portable wind-solar complementary power storage and supply system. The system comprises a first power supply system and a second power supply system; the first power supply system comprises a wind driven generator, a photovoltaic module and a control inverter; the wind driven generator is used for conducting wind power generation so as to produce electric energy; the photovoltaic module is used for conducting photovoltaic power generation so as to produce the electric energy; the control inverter is connected with the wind driven generator and the photovoltaic module and used for tracking maximum power points of wind power generation and photovoltaic power generation respectively and outputting the electric energy produced by the wind driven generator and the photovoltaic module at the maximum power respectively, and the second power supply system is a solar rechargeable battery. According to the portable wind-solar complementary power storage and supply system, power generation can be conducted by means of wind energy and solar energy, regional power supply can be conducted on field operation, power supply can be conducted on equipment with certain power, and vehicle carrying, spreading and erecting are convenient to achieve.

The invention discloses an UPS battery charger. The charger comprises a rectification circuit, a PFC chopper circuit and a BUCK converter, wherein the input end of the rectification circuit is coupled with alternating current input live wire (L), the output end of the rectification circuit is coupled with the input end of the PFC chopper circuit, the output end of the PFC chopper circuit is coupled with alternating current input null line (N) through bus bar, the input end of the BUCK converter is coupled with the bus bar and the output end of the BUCK converter is coupled with a rechargeablebattery. The invention also discloses a UPS with the UPS battery charger. By using the UPS battery charger and the UPS of the invention, larger charging power can be realized by using one BUCK converter, the control method is simple so as to effectively reduce the production cost, and the input voltage of the UPS battery charger is stable.

The invention relates to the field of electric cars and new energy sources and discloses an energy storage DC rapid charging pile system, comprising an energy storage device, wherein one end of the energy storage device receives alternating current from a power supply device with a relatively low input power and outputs alternating current with relatively high output power through a charging interface after storing the electric energy for a period of time. The invention further discloses an application method of the energy storage DC rapid charging pile system. The energy storage DC rapid charging pile system and the application method thereof have the advantages that the problems that a power grid needs to be reformed and grid fluctuation can be caused easily when electric power is taken from a civil power supply line through the charging interface can be solved; stable and high-power discharging to the charging pile can be realized; the charging efficiency is improved; the interference with power supply to the charging pile due to power grid reasons can be reduced; the problem about direct connection with the civil power supply line can be solved.

The embodiment of the invention discloses a charging system and electronic equipment. The charging system comprises first electronic equipment and second electronic equipment; the first electronic equipment comprises a transmitting coil; the second electronic equipment comprises a receiving coil; when the receiving coil of the second electronic equipment is close to the transmitting coil of the first electronic equipment, the first electronic equipment transmits electric energy to the second electronic equipment; when the charging power while the first electronic equipment transmits the electric energy to the second electronic equipment is less than a pre-set power threshold value, the second electronic equipment sends a charging power increasing signal to the first electronic equipment; after the first electronic equipment receives the charging power increasing signal, the number of turns of the transmitting coil is changed; or, the charging voltage is boosted; and thus, the chargingpower when the first electronic equipment transmits the electric energy to the second electronic equipment is increased. By adoption of the embodiment of the invention, the charging efficiency of wireless reverse charging can be increased; therefore, the user experience of a reverse charging technology is good; and the applicability is high.

The invention discloses a flip-type solar trolley automatic light-tracking system and a control method, and belongs to the technical field of solar power supply. The system consists of five parts: a main body frame unit, a quasi-double-shaft device, a multipath detection sensor, a flip structure and a light-tracking system control mechanism. According to the invention, one end of an aluminium framework is fixed at the tail end of a solar trolley through a fixing rotating shaft, and two sides of the aluminium framework are stably connected with a vehicle body through two telescoping rod motors. A central solar panel is fixed on the aluminium framework, and two solar panels at two sides are reinforced through angle aluminum. The solar panels are reinforced through fixing three sides of the frame. The multi-sensor fusion technology is used for the compensation and calculation tracking of an outer ring through combining with a sun-viewing rail tracking method, and the outer ring is quickly tuned nearby the azimuth angle of the sun in a coarse manner. Afterwards, four-quadrant photoelectric sensors are used for collecting the azimuth angle information of the sun, and the PID algorithm is employed for controlling duty ratio precise control motors with different PWM outputs, thereby achieving the accurate tracking of the azimuth of the sun.

The invention discloses a multifunctional wireless charging belt system which can support wireless multimode automatic charging, automatic positioning, automatic navigation and automatic driving for an electric vehicle during driving and combine intelligent traffic control and communication entertainment as a whole. The system comprises micro blocks and a positioning and navigation technology, wherein the micro blocks divide a road surface into blocks of fixed shapes and are arranged according to sequence numbers; and according to the positioning and navigation technology, the position of the vehicle is determined according to the position of a micro block where a vehicle tire is, and the driving speed and the direction of the vehicle are determined according to the distance between micro blocks and the numbers of the micro blocks passed by the vehicle in a unit time. A technology and a method of sending and receiving information while charging is carried out through electromagnetic resonance or an electromagnetic coupling charging system are also provided. Through the system, the vehicle can be automatically charged; the vehicle can automatically acquire real-time road traffic information, road traffic light information and front-rear vehicle information; the vehicle can automatically select the best way, regulate the best speed and arrive at a destination safely along a road guiding line indication lamp on the road.

A charging set capabel of dynamically adjusting charging power includes DC-DC converter power conversion level for supplying charging current; current error amplifier designing current charging adjusting signal to be fed into the DC-DC converter power conversion level for adjusting charging current; a first quantity of electricity detectino device used for designing charging current signal to be fed into the current error amplifier and output charging current to charge cell; quantity detection computation device designing and outputting working current operation signal, increasing applied efficiency of external power output power and shortening charging time.

A wireless charging transmitting device, a wireless charging receiving device, a wireless charging system, and a resonance parameter matching method are provided. The system includes: a conversion circuit for generating high-frequency alternating current; a primary-side resonance circuit including a resonance capacitor Cp, a primary coil Lp, and a compensation inductor L1, wherein the Cp and the Lp are connected in parallel between the two output ends of the conversion circuit and are for generating an alternating electromagnetic field through resonance, and the L1 is connected between a parallel node of the Cp and the Lp and the conversion circuit; a secondary-side resonance circuit including a secondary coil Ls, a resonance capacitor Cs and a compensation inductor L2, wherein the Ls andthe Cs are connected in parallel and are used for generating alternating current through magnetic field inductive coupling, one end of the L2 is connected to a parallel node of the Ls and the Cs, andthe other end of the L2 and the other parallel node of the Ls and the Cs are used as two output ends to output alternating current; and a rectifier circuit and a battery management module which are successively connected to the secondary-side resonance circuit. The L1 and the L2 can reduce the voltage and current stress of an inverter device and a resonant device, provides a device with greater power at the same current, and improves the charging power and efficiency when the battery is wirelessly charged.

The invention provides a vehicle-mounted type charging-power-adaptive charging-discharging circuit of an electric vehicle. Specific to the problem that switch of quick charging and slow charging cannot be realized in vehicle-mounted integrated type charging, the existing internal circuits and auxiliary devices of the electric vehicle, comprising two motor stator windings, two motor inversion circuits, cooling and mechanical apparatuses and the like and an additional inductive coil, are utilized to form variable inductance combinations along with the existing devices so as to realize adaption of the charging circuit to different charging power, wherein the vehicle-mounted type charging-power-adaptive charging-discharging circuit comprises a variable inductance combination 1 which consists of a stator winding of a rectifying side motor, an additional inductor 1 and corresponding contactors, a variable inductance combination 2 which consists of a stator winding of a direct current-direct current conversion side motor, an additional inductor 2 and corresponding contactors, and corresponding control circuits; and in addition, the charging-discharging circuit also needs contactors used for controlling, wherein the contactors comprise the fifth and sixth groups of contactors used for changing the rectifying side inductance value in charging, and the seventh and eighth contactors used for changing the direct current-direct current conversion side inductance value in charging.

A vehicle is configured to perform plug-in charging for charging a battery mounted in the vehicle with electric power supplied through a charging cable from a charging stand. The vehicle includes: an inlet to which a connector of the charging cable is connectable; and an ECU configured to control a supply current from the charging stand such that the supply current does not exceed a maximum allowable current. The ECU is configured to obtain specific information as to whether or not the charging stand is provided with a cooling mechanism for cooling the connector and the inlet. The ECU is configured to set the maximum allowable current to be higher when the charging stand is provided with the cooling mechanism than when the charging stand is not provided with the cooling mechanism.

The invention relates to a photovoltaic power scheduling method and device, a computer device and a storage medium. The method comprises the steps of triggering a collection instruction according to apreset period, and collecting the photovoltaic power generation power and the photovoltaic power consumption power in a current time period according to the collection instruction; when the photovoltaic power generation power is greater than or equal to the photovoltaic power consumption power, obtaining the first residual electric quantity of the energy storage system; when the first residual electric quantity is greater than or equal to a first threshold value, comparing the first electricity price with the electricity selling price in the current time period; and when the first electricityprice is greater than or equal to the electricity selling price, increasing the photovoltaic charging power of the charging pile according to the photovoltaic power generation power and the chargingpower of the energy storage system in the current time period. By adopting the scheme provided by the invention, in the similar time period which is adjacent to the current time period and has the same time attribute after the current time period, even if the generated power, the electricity utilization power, the electric quantity in the energy storage system and the electricity price are unbalanced, the increase of the power generation cost of the photovoltaic power can be avoided as much as possible.

The invention discloses a charging method for a lithium ion battery management system. The method comprises a five-stage current continuous charging step. The state of charge of a battery is judged before charging, and then, different charging steps are selected according to the state of charge of the battery. When the state of charge of the battery changes, the charging steps of the battery are adjusted in time for charging until the battery is fully charged. The state of charge of the battery can be judged by measuring the voltage of the battery and comparing the measured voltage with presetvoltages in different charging states. According to the charging method for a lithium ion battery management system, a five-stage current continuous charging scheme is adopted, so that anode lithiumprecipitation of lithium ion batteries at low temperature is improved, the safety of batteries during lithium ion charging is enhanced, and the quantity of electricity charged into lithium ion batteries is increased.

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 discloses a charger capable of automatically distributing charging current. The charger comprises a power supply module, a control module and a distribution detecting module. The distribution detecting module is connected with the control module and a plurality of sets of to-be-charged equipment. Furthermore the distribution detecting module detects the voltage characteristic of each set of to-be-charged equipment and transmits a voltage characteristic signal to the control module. The distribution detecting module further detects the charging state of each set of to-be-discharged equipment and furthermore forwards a charging state signal to the control module. Furthermore the distribution detecting module forwards the charging current distribution instruction of the control module to each set of to-be-discharged equipment in real time. The control module outputs a specific charging total power and furthermore transmits a charging current distribution instruction to each set of to-be-discharged equipment according to the charging state signal of each set of to-be-discharged equipment. The charger realizes large-power discharging on large-capacity to-be-discharged equipment and low-power charging on low-capacity to-be-discharged equipment. When charging to one set of to-be-discharged equipment is stopped, the charging current to the to-be-discharged equipment is automatically distributed to other to-be-discharged equipment, thereby improving charging efficiency.