34results about How to "Increase charging rate" patented technology

The invention discloses a low-temperature slow charging control method and device and a vehicle, and relates to the technical field of battery charging, and the low-temperature slow charging control method comprises the steps that temperature rise data of a battery pack is acquired; based on the temperature rise data of the battery pack, obtaining available charging power of the battery pack; determining a power distribution point based on the charging available power; and based on the power distribution point, distributing the power for charging the battery pack by the charging pile. According to the temperature rise data of the battery pack, the heating power required by the battery pack in the low-temperature environment is obtained; and in combination with the maximum power capable of being provided by the charging pile, the available charging power of the battery pack is obtained. And based on the available charging power of the battery pack and the maximum acceptable charging power of the battery pack, comprehensively considering the heating demand and bearing capacity of the battery pack, and confirming a power distribution point. The power distribution point can realize the distribution of the heating power and the charging power which utilize energy to the maximum extent, improve the charging rate and solve the distribution problem.

The invention discloses a display panel and a display device, and the display panel comprises a first region which comprises a plurality of rows of pixel circuits; the second area comprises a first start control line, a first driving circuit and a plurality of clock signal lines, the first start control line is electrically connected with the first driving circuit, and the first driving circuit comprises multiple stages of shift register units; in the shift register unit, a plurality of clock ends are electrically connected with a plurality of clock signal lines respectively, and N shift output ends are electrically connected with adjacent N rows of pixel circuits respectively; in a first working mode, a plurality of clock ends in the shift register unit receive different clock signals, so that N shift output ends output gate driving signals in a time-sharing manner; and in the second working mode, two clock ends in the shift register unit receive the same clock signal, so that the N shift output ends simultaneously output gate driving signals. In the invention, the display panel adopts the second working mode, so that the charging time of each row of pixel circuits can be prolonged, or the refresh rate can be improved.

The invention relates to a multi-gun independent charging system and method, and belongs to the technical field of new energy automobile charging control. According to the method, firstly, a charging system is detected, when it is detected that a charging gun is inserted, a BMS interacts with the charging gun through mutually independent charging CANs, the maximum allowable output current of the charging gun is obtained, and after interaction is completed, current is requested for charging according to the total maximum allowable output current of the charging gun and a multi-gun charging current adjusting method. Each charging gun can independently interact with the BMS through one path of charging CAN, so that the problem that only two guns on the same charging pile can be used for traditional double-gun charging and the problem that the two guns need to stop charging when one gun breaks down during double-gun charging are solved. The charging current of each gun is intelligently adjusted according to the total maximum allowable output current of the two charging guns, and the charging rate of independent charging of the multiple guns is increased.

The application relates to the technical field of power batteries, in particular to a power battery charging current control method and device, a vehicle and a storage medium, wherein the method comprises the following steps: detecting an actual charging working condition of a power battery, and judging whether the actual charging working condition meets preset current control conditions; in the case that the actual charging working condition meets the preset current control conditions, obtaining a maximum chargeable power of the power battery; calculating a maximum chargeable current of the vehicle according to the maximum chargeable power, a power deviation of a PID controller and a power consumption of an accessory consumer, and controlling the charging of the power battery by using the maximum chargeable current of the vehicle. According to the application, the accurate calculation result of the maximum chargeable current of the vehicle can be obtained by constructing the power deviation of the PID controller, so that the charging rate of the vehicle is improved, the use experience of the user is guaranteed, and the vehicle is more intelligent.

The invention provides a connecting cable, a vehicle and vehicle charging equipment. The connecting cable comprises a cable structure and a flexible cooling pipe at least used for containing a cooling medium. The cable structure comprises a rigid conductor tube and a first insulating layer arranged on the peripheral side of the rigid conductor tube, and the rigid conductor tube is electrically connected between a power supply and a load; the flexible cooling pipe can extend into the rigid conductor pipe through one end of the rigid conductor pipe and is in heat conduction contact with the rigid conductor pipe; and the end part of the cable structure is provided with a fixing piece, and the fixing piece is used for fixing the flexible cooling pipe on the cable structure after the flexible cooling pipe extends into the rigid conductor pipe, so that the current-carrying capability of the connecting cable can be improved.

The negative plate comprises a current collector and a coating layer, the coating layer is arranged on at least one side of the current collector in the thickness direction, the coating layer comprises a first coating layer and a second coating layer, the first coating layer is arranged on at least one side of the second coating layer in the width direction of the current collector, and the second coating layer is arranged on at least one side of the second coating layer in the width direction of the current collector. The electrode plate is positioned in the edge area of the negative plate; wherein the hard carbon content of the first coating is higher than that of the second coating. The hard carbon content of the first coating is higher than the hard carbon content of the second coating, and the lithium ion diffusion coefficient of the hard carbon is obviously higher than that of the graphite, so that the charging rate of the first coating is obviously higher than that of the graphite. And the problem of lithium separation caused by lithium ion accumulation is reduced.

The utility model discloses a display panel, a display area of the display panel comprises a plurality of pixel units arranged in an array, and each pixel unit comprises a device area and a pixel area; the display panel comprises a substrate, a thin film transistor located in a device area and a pixel electrode located in a pixel area. The thin film transistor comprises a first electrode, an interlayer dielectric layer, a second electrode and an active layer which are sequentially located on a substrate. The interlayer dielectric layer covers the substrate and the first electrode; a first via hole for exposing the first electrode is formed in the interlayer dielectric layer; the second electrode is located on the interlayer dielectric layer; the active layer covers the first electrode exposed in the first via hole, the hole wall of the first via hole and the second electrode; the interlayer dielectric layer extends from the device area to the pixel area, and the pixel electrode is located on the side, away from the substrate, of the interlayer dielectric layer and connected with the second electrode; the pixel electrode and the second electrode or the active layer are arranged on the same layer. The manufacturing cost of the display panel can be effectively reduced while the high aperture ratio and the high charging rate of the display panel are achieved.

The invention provides a method and a system for preparing a vehicle for a performance mode. Systems and methods are described for adjusting motor torque or power as a function of a position of a human operated input device that is not a driver demand pedal. In one example, the human operated input device may be a button or a joystick. Electrical charge or mechanical torque or power may be generated via the electric machine in response to a position of the human operated input device.

A charging method, device, equipment and medium provided by an embodiment of the present invention have the following beneficial effects: by calibrating the heat capacity and maximum heat dissipation coefficient of the battery cavity; obtaining multiple battery temperatures, identifying the first coefficient and the second coefficient of the thermal balance equation of the battery cavity, which are used to estimate the average impedance and heat dissipation coefficient of the battery respectively; when the battery temperature is less than the first-level temperature over-threshold, charging with the maximum charging current; when the battery temperature is greater than or equal to the first-level temperature over-threshold and less than the second-level temperature over-threshold, the charging current is estimated and charged according to the thermal balance equation of the battery cavity, the heat capacity, the average impedance of the battery and the heat dissipation coefficient; when the battery temperature is greater than or equal to the second-level temperature over-threshold, the charging current is zero. The present invention accurately calibrates the battery cavity parameters, and estimates the charging current in real time through the temperature in the battery cavity and the battery temperature, so that the charging process is always at a higher power, thereby effectively speeding up the charging rate.

The invention relates to a lithium-sulfur battery electrolyte capable of inducing generation of S3 <.-> free radicals, a preparation method of the lithium-sulfur battery electrolyte and a lithium-sulfur battery, an electrolyte additive tetra-n-octyl ammonium chloride ((C8H17) 4NCl) is introduced into the electrolyte to promote generation and stabilization of the S3 <.-> free radicals, and the lithium-sulfur battery electrolyte comprises a lithium salt, an ether solvent and an additive; the additive is tetra-n-octyl ammonium chloride, the concentration of the tetra-n-octyl ammonium chloride is 20-200mmol / L, and the electrolyte can be used for assembling a lithium-sulfur battery. Compared with the prior art, the lithium-sulfur battery electrolyte is prepared by introducing tetra-n-octyl ammonium chloride, the solvation structure of the electrolyte is changed, the conversion kinetics of sulfur is enhanced, the formation of S3.-free radicals is promoted, and the stability of the S3.-free radicals is improved, so that the uniform growth of a solid electrolyte interface in the charging and discharging process of the lithium-sulfur battery is promoted; in addition, the synthesis path of the electrolyte is simple, and the manufacturing cost of the battery is reduced.

The application discloses a display panel and a display device, and relates to the technical field of display panels, and discloses a display panel and a display device, which comprises a first area comprising a plurality of pixel circuits, a second area comprising a first start control line, a first driving circuit and a plurality of clock signal lines, the first start control line being electrically connected to the first driving circuit, and the first driving circuit comprising a plurality of shift register units; in the shift register units, a plurality of clock terminals are respectively electrically connected to the plurality of clock signal lines, and N shift output terminals are respectively electrically connected to N adjacent rows of pixel circuits; in a first working mode, the plurality of clock terminals in the shift register units receive different clock signals, so that the N shift output terminals output gate driving signals in time; and in a second working mode, two clock terminals in the shift register units receive the same clock signal, so that the N shift output terminals output gate driving signals at the same time. In the application, the display panel adopts the second working mode, so that the charging time of each row of pixel circuits can be increased, or the refresh rate can be improved.

The present application discloses a battery charging thermal management method, device, equipment, medium and product, which relates to the field of thermal management technology. The battery charging thermal management method includes: obtaining the current operating scenario data of the aircraft; the current operating scenario data includes the mission airspace temperature information and flight profile information of the aircraft; matching to obtain the target battery temperature corresponding to the current operating scenario data; thermally managing the battery pack of the aircraft during the charging process, so that the battery temperature of the battery pack reaches and is maintained at the target battery temperature during the charging process. The present application can make the thermal management task more adaptable when the battery is charging.

The battery assembly, the battery pack and the new energy vehicle provided by the present disclosure relate to the field of batteries. The busbar comprises a connecting row and a top plate, the connecting row and the top plate are connected, and a sealed cavity is formed between the connecting row and the top plate; the sealed cavity is provided with a capillary structure and a cooling liquid. The cooling liquid is used for absorbing heat of the connecting row and evaporating, the evaporated gas is condensed on the inner wall of the sealed cavity, and the condensed liquid flows back through the capillary structure. The busbar has a cooling function, realizes rapid heat dissipation of the busbar, and the cooling liquid can be recycled, thereby solving the problem of excessively high temperature rise of the busbar under the condition of large-rate charging and discharging.

The invention discloses a pixel circuit, a driving method thereof and a display panel. The pixel circuit comprises a driving transistor which is an N-type transistor; the first end of the compensation module and the gate of the driving transistor are electrically connected to a first node, and the second end and the first pole of the driving transistor are electrically connected to a second node; a first end of the write-in module is electrically connected with a data voltage end, a second end is electrically connected with a first pole plate of the first capacitor, and a second pole plate of the first capacitor is electrically connected with a grid electrode of the driving transistor; the first end of the first light-emitting control module is electrically connected with the first power supply voltage end, and the second end is electrically connected with the second node; the first end of the second light-emitting control module and the second electrode of the driving transistor are electrically connected to a third node, and the second end and the light-emitting element are electrically connected to a fourth node; the first pole plate is electrically connected with the first node, and the second pole plate is electrically connected with the fourth node. By adopting the technical scheme, the problems of ghost shadow and splash screen caused by hysteresis of the driving transistor can be improved.

The invention belongs to the technical field of superconducting magnet excitation systems, and particularly relates to a high-temperature superconducting flux pump system, which comprises a flux pump body, a superconducting load and a stator group. A double-pancake coil group comprises at least one double-pancake coil. The stator group comprises at least one stator. The flux pump body has an air gap for receiving the stator group. The superconducting load and the stator group are connected to form a closed circuit. The high-temperature superconducting flux pump system has a simpler structure, solves the problem of low charging rate of magnets, and greatly reduces the power cost without changing the magnet structure and winding cost.

The surge suppression circuit and network device provided by the embodiments of the present disclosure include: a first voltage signal generating module, which generates a first voltage at the control end of the input transistor according to the input voltage of the input voltage node when receiving a first control signal, so that the input transistor charges the capacitor with a first charging current, and the first charging current is less than the surge current; a second voltage signal generating module, which generates a second voltage at the control end of the input transistor when receiving the first control signal and the second control signal, so that the input transistor charges the capacitor with a second charging current, and the second charging current is greater than the first charging current; the first control signal generating module, which outputs a first control signal to the first voltage signal generating module and the second voltage signal generating module when receiving a power-on indication signal; and the second control signal generating module, which outputs a second control signal to the second voltage signal generating module when the voltage at the first end of the capacitor meets a preset threshold voltage.

The present invention discloses a closed automobile wireless charging device based on resonant coupling wireless charging, comprising a lifting charging pile and a charging receiving cavity, wherein the lifting charging pile is arranged on the ground through a lifting mechanism, the charging receiving cavity is arranged on the chassis of the automobile and is provided with an opening facing downward, the lifting charging pile comprises a plurality of transmitting antennas for transmitting wireless energy, the transmitting antennas are respectively arranged on the top surface and the side surface of the lifting charging pile, the charging receiving cavity comprises a plurality of receiving antennas for receiving wireless energy, the receiving antennas are respectively arranged on the top surface and the side wall of the charging receiving cavity, after the lifting charging pile is extended into the charging receiving cavity, the transmitting antenna on the top surface of the lifting charging pile corresponds to the receiving antenna on the top surface of the charging receiving cavity, and the transmitting antenna on the side surface of the lifting charging pile corresponds to the receiving antenna on the side wall of the charging receiving cavity. The present invention makes full use of the multiple surfaces of the lifting charging pile to arrange the transmitting antennas, thereby improving the charging efficiency.

The application provides an array substrate, a driving method and a display device. The array substrate comprises a driving module, a plurality of rows and columns of sub-pixels, a plurality of columns of data lines and a plurality of rows of scanning lines; one frame time comprises at least two sub-frames; the driving module provides scanning signals to the scanning lines, controls the plurality of rows of scanning lines to be opened in turn in the sub-frames, and controls the sub-pixels corresponding to the same color and electrically connected to the opened scanning lines and the same data line in the sub-frames; in the sub-frames, there are overlapping time periods and non-overlapping time periods between effective time periods of scanning signals provided by at least two adjacent scanning lines in the plurality of rows of scanning lines opened in turn; and data voltages received by the data line in at least part of the overlapping time periods are the same as data voltages received by the data line in at least part of the non-overlapping time periods. The application can improve the charging time of at least part of the sub-pixels, improve the charging rate and the refresh rate, and improve the display quality.

The application discloses a pre-charging method and a liquid crystal display screen. The method comprises the following steps: providing a liquid crystal display screen, wherein the liquid crystal display screen comprises a control unit and a timing unit, and the timing unit is used for outputting a gate driving timing sequence of the liquid crystal display screen according to a control instruction; and providing a first gate driving timing sequence to all pixels of the liquid crystal display screen by using the timing unit to perform 3H charging on the pixels to perform point flipping. The 3H charging is pre-charging in a first H unit time and a second H unit time, actual charging after a third H unit time, and the second H unit time is separated from the third H unit time by 1 H unit time. The point flipping is performed by providing 3H charging to the pixels of the liquid crystal display screen row by row, the voltage difference during the charging of the pixels is effectively reduced, the charging rate is improved, and the display quality is improved.

The application discloses a superconducting charging cable of fault current limiting type, and mainly solves the problems that existing superconducting cables cannot be used for bidirectional direct-current high-power charging and have complex structures. The superconducting charging cable comprises a cable framework and liquid nitrogen passage (1), a composite conductor layer (2) and a thermal insulation shell (3). The cable framework supports the composite conductor layer and the thermal insulation shell. The composite conductor layer is composed of inner and outer superconducting tape layers and inner and outer fault current limiting stabilizing layers, and is wrapped on the cable framework. The inner composite conductor layer and the outer composite conductor layer are separated by using an intermediate layer insulating bushing, so that the bidirectional direct-current charging function of the superconducting cable is realized. The fault current limiting stabilizing layer is armored on the superconducting tape layer, so that the fault current limiting function of the superconducting cable is realized. The thermal insulation shell is wrapped on the outer liquid nitrogen bellows, so that the heat leakage of the cable body to the outside is greatly reduced. The superconducting charging cable has a compact structure, does not need to use a fault current limiter, and can be used for connecting electrode terminals to perform high-power direct-current fast charging on electric vehicles.

The invention provides an array substrate, a driving method and a display device. The array substrate comprises a driving module, a plurality of scanning lines, a plurality of data lines and a plurality of pixels, two scanning lines are arranged between two adjacent rows of sub-pixels; two columns of sub-pixels are arranged between the two columns of data lines; in the same row of sub-pixels, the plurality of sub-pixels electrically connected with the same data line have at least two colors; in the adjacent rows of sub-pixels, at least two sub-pixels electrically connected with the same data line have the same color; the driving module controls an overlapping time period and a non-overlapping time period to exist between effective time periods of scanning signals provided by at least two scanning lines which are opened in sequence in a display frame; the data voltage received by the data line in at least part of time in the overlapping time period is the same as the data voltage received by the data line in at least part of time in the non-overlapping time period. The charging rate and the refresh rate can be improved, and the display quality is improved.

The invention discloses a power supply circuit, a power supply method and a power supply system of a refrigerator car, and relates to the field of power supplies. If alternating current output by an alternating current power supply is received, direct current obtained by rectifying the alternating current through a rectifying circuit is used for supplying power to target equipment; and when no alternating current output by the alternating current power supply exists, the original power supply of the target equipment is used for supplying power. Meanwhile, the alternating current power supply is input into the rectifying circuit after passing through the reactor, so that harmonic interference in a power grid can be effectively avoided, stable operation of target equipment is facilitated, and the utilization rate of electric energy is improved; the original power supply serves as the main power supply, the alternating current output by the alternating current power supply serves as the standby power supply, automatic switching of the main power mode and the standby power mode is achieved, and the new energy refrigerator car can directly use the mains supply to supply power to the refrigerating unit under the condition that the mains supply is connected. The situation that the original power supply of the new energy refrigerator car needs to supply power to the refrigerating unit while being charged is avoided, and the charging rate of the original power supply in the new energy refrigerator car is increased.

The present invention provides a separator for a lithium battery having an electrode having a thickness greater than 0.1 mm, characterized in that the separator is formed from interwoven non-conductive inorganic fibers, optionally with a blend of non-conductive inorganic particles; wherein the length of the fiber is in the range of 0.5 mm to 30 mm, and the thickness of the fiber is in the range of 20 nm to 1500 nm; wherein the fiber is made of glass; the aperture of the separator is in the range of 0.02 [mu] m to 2.5 [mu] m, where the aperture of the separator is an average aperture of the separator determined by averaging at least 50 pore diameter values read from an electron microscope image; the absorbency of the separator, expressed as the weight of the electrolyte 1MLiPF6 soaked in ethylene carbonate / dimethyl carbonate at a volume ratio (v: v) of 1: 1, is 1 to 10 times the weight of the separator.

The invention relates to a system and a method for converting parallel input and output of positive and negative assembled batteries, which are applied to a special vehicle powered by the positive and negative assembled batteries, and are characterized in that the positive and negative assembled batteries respectively supply power to positive and negative assembled loads during normal work; the parallel input and output of the positive and negative batteries can be realized by operating the change-over switch on the instrument board, and meanwhile, the load connected with the original negative battery is cut off, so that the safety during parallel connection is ensured, and the influence on the load is avoided; when the original vehicle main switch is independently turned on, the electric equipment on the vehicle can keep the original vehicle electric state unchanged; when the change-over switch and the main switch are switched on simultaneously, only the positive battery pack is kept to supply power to the vehicle, and the safety of series-parallel connection switching of the positive and negative battery packs is ensured through the self-locking design.

The invention relates to the field of display, and discloses an array substrate, a display device and a driving method.The array substrate is characterized in that each sub-pixel row defined by multiple rows of grid lines and multiple columns of data lines in a crossed mode comprises a pixel electrode and a transistor, and the edge, extending along the grid lines, of the pixel electrode is larger than the edge, extending along the data lines, of the pixel electrode; every two adjacent sub-pixel rows with the same color form a row unit, every two shift registers are adjacently arranged or M-1 shift registers are arranged between every two shift registers at intervals, one register group corresponds to one row unit, the first shift register in the register group is connected with the first sub-pixel row in the corresponding row unit, and the second shift register in the register group is connected with the second sub-pixel row in the corresponding row unit. When the array substrate works in the first mode, clock signals on the clock signal lines connected with the same register set are the same, the image display effect is effectively improved, and the charging rate of the array substrate is improved while the cost is reduced.

The present invention provides a display driving module, a display driving method and a display device. The display driving module includes a clock signal line, a clock signal generating circuit and a gate driving circuit, wherein the gate driving circuit includes a multi-stage gate driving unit; the clock signal generating circuit is electrically connected to the clock signal line, and is used to generate at least two clock signals, and provide different clock signals to the clock signal line in a time-sharing manner; the gate driving unit is electrically connected to the clock signal line, and is used to generate a gate driving signal according to the clock signal on the clock signal line; when the potential of the clock signal is an effective voltage, the potentials of different clock signals are different. The present invention solves the problem in the prior art that the charging rates of different rows of pixel circuits on the display panel are uneven, which leads to insufficient charging of the remote pixel circuits of the display panel, and the occurrence of bad horizontal stripes.

A power battery charging method, device, equipment and medium are disclosed, including: monitoring the actual state of charge of a target battery during a target battery charging process; when the actual state of charge is less than a preset state of charge, determining the actual charging stage in which the target battery is currently located according to the actual state of charge; determining the target limit charging rate corresponding to the actual charging stage according to the correspondence between the actual charging stage and the limit charging rate; determining the actual charging rate according to the target limit charging rate, and controlling the target battery to charge at the actual charging rate in the actual charging stage. The present application charges within the range of less than or equal to the limit charging rate, can avoid the occurrence of obvious polarization phenomenon, reduce the polarization degree, that is, increase the charging rate as much as possible under the premise of low polarization degree, shorten the charging time, improve the charging efficiency, and at the same time improve the charged power.

The embodiment of the present invention discloses a method and system for improving the charging speed of a charging pile of a charging station, the method comprising: receiving a target reservation charging request sent by a target owner corresponding to a target electric vehicle; obtaining the battery status data of the target charging vehicle according to the target reservation charging request; judging whether the current remaining battery power of the target charging vehicle is less than or equal to the first target battery remaining power threshold; if so, setting the charging mode of the target electric vehicle to a battery replacement mode, judging whether a target spare full-grid charging battery with the same model as the battery model of the target charging vehicle and full of power is currently prepared; if so, notifying the target owner to replace the target spare full-grid charging battery at the target designated battery replacement address corresponding to the target charging station; if not, notifying the target owner to drive the target charging vehicle to a designated parking lot in the target charging station to wait for battery replacement. The present invention can improve the charging rate of electric vehicles in charging stations as a whole, and avoid congestion caused by vehicles in charging stations.

The application discloses a kind of power battery system super low temperature charge-discharge heat management methods, comprising: starting fuel cell system under super low temperature environment, pull up the power of the fuel cell system, the electric energy generated is used to power heater and fuel cell auxiliary components;Control water pump to circulate cooling liquid between power battery pack and fuel cell system;According to the temperature of power battery pack, control electronic thermostat to switch cooling liquid circulation mode;When power battery pack reaches the first preset temperature, the fuel cell system is closed, and only rely on heater to provide heat for power battery pack;When heater cannot guarantee the temperature rise of power battery pack, restart fuel cell system.The power battery system super low temperature charge-discharge heat management method of the application uses the wide temperature range characteristics of fuel cell to heat the power battery pack under extremely cold conditions, so as to ensure the normal use of vehicle, solve the industry problem that power battery cannot charge and discharge below-40 DEG C, and improve the extreme cold adaptability of whole vehicle.

The application discloses a composite negative electrode material and a preparation method thereof, a negative electrode sheet and a lithium ion battery, and belongs to the technical field of lithium ion batteries.The composite negative electrode material comprises a core and a coating layer located on the surface of the core; the core comprises a carbon matrix and a filling material, the carbon matrix has a first pore, and the filling material is at least partially distributed in the first pore; and the filling material comprises SiOx, and the filling material has a second pore.The composite silicon negative electrode composite negative electrode material can effectively reduce the volume effect and improve the cycle stability.