123 results about "Electrical energy consumption" patented technology

The invention discloses a powerful propeller and an aircraft, and belongs to the technical field of aircrafts. The powerful propeller comprises a cover disc, a stator and a rotor, the cover disc comprises a central bearing seat, a radial support and an outer mounting frame which are sequentially connected from inside to outside, the rotor comprises a paddle mounting column, paddles and an outer ring which are sequentially connected from inside to outside, and the outer ring is provided with a permanent magnet which is in induction fit with the stator; the paddle mounting column is connected with the central bearing seat through a bearing; and the outer mounting frame is fixedly connected with the stator. Airflow loss of the blade tip can be avoided, and thrust is greatly improved. According to the invention, the coaxial contra-rotating technology can be realized. And the two coaxial fans can achieve a better superposition effect, so that the noise is reduced. The rotating directions of the two blades which are coaxially designed are opposite, the rotating torque of the propeller can be offset, and balance of the aircraft fuselage can be kept beneficially. According to the invention, a negative pressure suction air cooling technology can be designed according to needs to solve the problem of motor heat dissipation, and extra electric energy consumption is not needed.

The invention discloses an electrical energy consumption and mechanical load coordinated instrument dynamic calibration system, and relates to the technical field of instrument calibration, the system comprises a diagnosis module for receiving original data streams of an electrical side and a mechanical side, and identifying segments to be optimized by calculating a symbol consistency rate and a zero cross alignment error; the robust symbol division module performs symbol state judgment by using a dynamic dead zone and a double-domain hysteresis comparator, and outputs smooth symbol segments and a switching delay table in combination with a finite state machine; the signed channel reconstruction module executes phase micro-shift and amplitude reconstruction based on the switching delay table, and outputs the signed channel after electrical side optimization; the write-back and closed-loop module obtains positive and negative power calibration parameters through bipolar bucket separation and robust linear regression, and writes back to the instrument after event-level energy closed verification to form closed-loop verification. According to the method, the instrument calibration precision and reliability under the dynamic working condition are effectively improved.

The present application relates to the technical fields of RTO oxidation furnace, and discloses a heat exchange type RTO oxidation furnace and a use method thereof, which comprises an RTO oxidation furnace body, a gas guide pipe, a valve mechanism and a steering mechanism, the RTO oxidation furnace body is connected with the gas guide pipe, and the valve mechanism comprises a supporting plate, a first transmission rod, a valve core and a linkage unit. The whole linkage of the valve mechanism is driven by the gas flow kinetic energy of the gas guide pipe, so that the valve core realizes high-frequency opening and closing, the traditional motor driving mode is completely abandoned, the motor wear, jam and power consumption problems are fundamentally eliminated, external power input is not needed, energy consumption is greatly reduced, there are no vulnerable parts such as motors and bearings, the failure rate is also greatly reduced, the frequency of shutdown maintenance and the cost of spare parts replacement are reduced, and through the setting of the steering mechanism, the narrow surface of the counterweight disc in the linkage unit is parallel to the gas flow when swinging to the farthest end, the resistance area is reduced, and stable reciprocating motion is realized in combination with gravity backswing.

The present development relates to an electrical system (5) for a motor vehicle (1) comprising: - at least an electric drive (32) and - Fuel cell arrangement (20) comprising a first fuel cell (40) and a second fuel cell (42), which are of different dimensions and can be controlled and / or regulated independently of each other, - a control unit (50) designed to control or regulate the electrical power output of the first fuel cell (40) and the second fuel cell (42) depending on the current or predicted electrical energy consumption of the motor vehicle (1).

The utility model provides a clamp which comprises a base and a supporting assembly. The base is used for bearing a substrate. The base is provided with a through hole, and the through hole corresponds to the area, used for arranging the first connector, of the first face and the area, used for arranging the second connector, of the second face. The supporting assembly comprises a supporting seat and a supporting piece arranged on the supporting seat, the supporting seat is detachably connected with the base, the arrangement position of the supporting piece on the supporting seat corresponds to the arrangement position of the through hole in the base, and the supporting piece is used for abutting against a first connector located on the first face or a second connector located on the second face. Therefore, the first connector or the second connector is clamped between the supporting seat and the substrate. By means of the design, the first connector and the second connector can be arranged on the two opposite side faces of the substrate at the same time, so that welding of the substrate, the first connector and the second connector can be completed in a subsequent one-time furnace, the reliability, the production efficiency and the like of products are improved, and electric energy consumption of a production line can be reduced.

The invention discloses a rotary compressor and refrigeration equipment, and relates to the technical field of compressors, the rotary compressor comprises a motor, the motor comprises a stator and a rotor, the stator comprises a stator iron core and a stator winding, the stator iron core comprises an annular yoke part and a plurality of tooth parts arranged in the yoke part, the tooth parts are spaced in the circumferential direction of the yoke part, and the stator winding is arranged in the yoke part; a stator groove is formed between every two adjacent tooth parts, the stator winding is wound in the stator grooves, and the rotor comprises a rotor iron core; the pump body part comprises a crankshaft, an upper bearing and a cylinder; the number of stator grooves is Q, the number of poles of the rotor is P, the maximum outer circle contour radius of a rotor core is R1, the maximum outer circle contour outer diameter is D1, D1 = 2 * R1, the outer diameter of the portion, matched with the upper bearing, of the crankshaft is D2, GCD (Q, P) is the largest common divisor of Q and P, and GCD (Q, P) is larger than or equal to 5 and smaller than or equal to 6. According to the rotary compressor, the energy efficiency of the rotary compressor is improved, and the electric energy consumption of operation is reduced.

The utility model discloses an efficient environment-friendly waste liquid neutralizing and stirring device, and belongs to the technical field of waste liquid treatment. The efficient and environment-friendly waste liquid neutralizing and stirring device comprises a neutralizing tank, a stirring device and a waste liquid assembly, the stirring device comprises a suspension fan and a compression fan, and the output ends of the suspension fan and the compression fan are positioned in the neutralization tank; the waste liquid assembly comprises an acidic waste liquid tank, an alkaline waste liquid tank and a three-way valve, one end of the three-way valve is communicated with the inlet of the neutralization pool, and the other two ends of the three-way valve are respectively communicated with the acidic waste liquid tank and the alkaline waste liquid tank through independent pipelines; a liquid outlet is formed in the bottom of the neutralization tank and is used for discharging neutralized waste liquid; alternate work of the suspension fan and the compression fan can be achieved, the suspension fan serves as a common working fan, when the suspension fan breaks down, the compression fan is used for completing work firstly, noise generated during neutralization stirring is reduced, electric energy consumption is reduced, and the overall operation stability of the device is improved.

The application is suitable for the technical field of crucible furnace, and provides a graphite crucible for carbonizing lithium battery negative electrode material, which comprises two furnace bodies with furnace covers, a crucible and a heating mechanism arranged in the inner cavities of the furnace bodies, and the inner cavities of the two furnace bodies are communicated through two flow guide pipes, and an air extractor is installed on each flow guide pipe, a guide frame is arranged between the inner walls of the furnace bodies and the outer surface of the heating mechanism, two air ducts penetrating through the furnace bodies and communicated with the inner cavities of the furnace bodies are arranged on the furnace bodies, and the air duct at the bottom of one side of one furnace body is communicated with the air duct at the top of one side of the other furnace body through the flow guide pipe.The application realizes the circulation of hot air between the heated furnace body and the unheated furnace body by the flow guide pipe and the air extractor, effectively transfers the waste heat in the cavity of the heated furnace body to the unheated furnace body, preheats the negative electrode material in the unheated furnace body, significantly reduces the power consumption, improves the overall energy utilization rate, and realizes the recycling of the hot air between the two furnace bodies, reduces the heat loss, and greatly improves the utilization efficiency of unit energy.

The utility model discloses a flue gas desulfurization and denitrification fan energy-saving control system, which is arranged in a flue gas desulfurization and denitrification dust removal system and comprises a flow velocity sensor, a first pressure sensor and a pollutant concentration sensor which are arranged at an inlet of a desulfurization tower, and a second pressure sensor arranged at a chimney discharge port, the air door is arranged at an inlet of the induced draft fan, and the terminal is connected with the induced draft fan, the flow speed sensor, the first pressure sensor, the second pressure sensor, the pollutant concentration sensor and the air door. By means of the hardware architecture of the flue gas desulfurization and denitrification fan energy-saving control system, the induced draft fan can be adjusted according to the air volume required by the system and the resistance of the system, the adjustment of the induced draft fan can more accurately adapt to the actual working condition, unnecessary electric energy consumption is reduced, and the purposes of energy saving and optimization are achieved.

This invention discloses a low-pressure nitrogen interconnection system and its usage method, comprising a 35,000 kW oxygen generator unit, a water-cooled tower, a 12,000 kW nitrogen compressor, a 6,000 kW nitrogen compressor, a 7,200 kW nitrogen compressor, a 6,000 kW oxygen generator unit A, and a 6,000 kW oxygen generator unit B. The outlet of the 35,000 kW oxygen generator unit is connected via pipelines to the inlets of the 35,000 kW nitrogen compressor A, the 35,000 kW nitrogen compressor B, a flow valve, and a main connecting valve. The outlet of the flow valve is connected via a pipeline to the inlet of the water-cooled tower, and the outlet of the water-cooled tower is discharged to the atmosphere via a pipeline. This invention optimizes the structure of the low-pressure nitrogen interconnection system, fully utilizes the surplus nitrogen produced by the oxygen generator, avoids resource waste, improves economic efficiency, and increases the output of low-pressure nitrogen with the same power consumption, saving electricity consumption, reducing production costs, achieving the goal of energy saving and efficiency improvement, and meeting the gas demand of the nitrogen pipeline network.

The utility model provides a multifunctional greening comprehensive maintenance device, which relates to the field of greening maintenance devices and comprises a tricycle, a water storage tank is mounted on the upper portion of the tricycle, and a horizontal support plate is fixedly connected to the tail of the tricycle. A supporting frame is installed on the right side of the upper end face of the horizontal supporting plate, a spraying mechanism is arranged on the top of the supporting frame, and a watering mechanism is installed on the supporting frame. Through cooperation of a hydraulic shell, a hydraulic impeller, an impeller shaft, a transverse linkage shaft, a longitudinal linkage shaft, a driving belt wheel, a driven belt wheel and a stirring shaft, automatic mixing is achieved during dispensing, manual intervention or stirring through an additional tool is not needed, meanwhile, an auxiliary mixing motor does not need to be started, and electric energy consumption is effectively reduced; the problems that an existing greening maintenance device is lack of an automatic energy-saving mixing structure, manual stirring is needed in the medicine dispensing process, even if an electric stirring device is arranged, a stirring motor needs to operate all the time in the medicine dispensing process, and therefore electric energy loss is increased are solved.

The invention discloses an injection molding machine and a use method, and belongs to the field of injection molding equipment. A material box, an injection molding machine body and a forming mold are arranged on the rack; a flow guide cavity for introducing a cooling medium is formed in the forming mold; a water inlet pipe and a water outlet pipe are respectively assembled at two ends of the flow guide cavity; a discharging hole is formed in the side wall of the material box; a feeding hole matched and communicated with the discharging hole is formed in the top wall of the injection molding machine body; a guide plate with a rough upper surface is arranged in the material box, and the bottom wall of the discharge hole and the top surface of the guide plate are coplanar; according to the scheme, cooling water with waste heat discharged by the forming die is introduced into the cavity of the pressing plate, the heat-conducting elastic film is driven by water pressure to be tightly attached to and wrap the material for large-area contact type heat exchange, and the originally lost low-grade waste heat is directly fed back to be used for preheating the normal-temperature material at the front end; and the electric energy consumption of the subsequent melting procedure of the injection molding machine body is reduced, and the effect of energy closed-loop efficient utilization is achieved.

The present application relates to the technical field of cement pole steam curing, and particularly relates to an energy-saving heat exchange steam curing device for cement pole production, which comprises a steam curing pool, a steam chamber is arranged in the middle of the bottom surface of the steam curing pool, a flow guide plate is fixedly connected above the steam chamber, a plurality of steam frames are connected to the top of the flow guide plate in communication, rotating drive mechanisms are arranged on both sides of each steam frame, and pole molds are arranged between the adjacent two rotating drive mechanisms. The present application converts the vertical hard impact of the pole mold when crossing the driving wheel into smooth inclined surface rolling by using the inclined surface pressure rod to build a follow-up track, greatly reduces the conveying resistance, and directly reduces the power consumption of the motor operation. The present application changes the disadvantage that the locking part in the traditional structure bears a large shearing force for a long time, inserts the rigid locking block, and avoids the mold from falling in the non-specified position. The core is that the mold is driven to rotate at a constant speed by the driving wheel, and the steam is forced to circulate by the flow guide plate, so that the heat conduction efficiency is improved, and the steam and coal consumption are reduced.

The invention discloses a refrigeration equipment starting control method and refrigeration equipment, the refrigeration equipment comprises a compressor, an energy storage power supply, a control module and an equipment door, the energy storage power supply is connected with the compressor and the control module, and the control module comprises a timer, a detection module and a main controller. According to the compressor starting method and device, the preset duration is set, whether the preset starting condition is met or not is judged according to the detection information, and only when the preset duration is reached and the preset starting condition is met, the energy storage power source supplies power to the compressor so as to start the compressor; on the premise that food is safe and fresh-keeping is guaranteed, the starting time of refrigeration of the compressor can be delayed to the maximum extent, starting according to needs is achieved, unnecessary electric energy consumption of the energy storage power supply under the conditions of instantaneous power failure and short-time power failure is effectively avoided, the effective power supply time of the energy storage power supply is prolonged under the condition of long-time mains supply power failure, and the service life of the energy storage power supply is prolonged. Therefore, the fresh-keeping time of the refrigeration equipment is prolonged.

The invention relates to a method for operating an electric motor (130) at a predetermined speed using a controller (150) and a DC voltage source. The controller (150) is designed to regulate the electrical power consumption of the electric motor (130) during operation at the predetermined speed. The DC voltage source provides a DC voltage to supply the electric motor (130) with electrical energy. The method comprises the following steps: 1. The controller (150) detects the voltage value of the DC voltage, and 2. the controller (150) regulates the electrical power consumption based on the voltage value. With this invention, for example, a battery pack can be reliably operated as a DC voltage source even when cold and, if necessary, quickly warmed up.

This utility model discloses a dry cooler, including a frame and two end plates. The two end plates are respectively disposed at both ends of the frame along its length, forming a cavity with the frame. It also includes multiple first partitions and multiple second partitions. The first partitions extend along the width of the frame, and the multiple first partitions are spaced apart within the cavity along the length of the frame, dividing the cavity into multiple sub-cavities. The second partitions extend along the length of the frame, and each of the multiple second partitions corresponds to one of the multiple sub-cavities, dividing the sub-cavities into two air ducts. Each of the two air ducts has an air inlet area communicating with its corresponding air duct on its opposite side, and an air outlet area communicating with its corresponding air duct is disposed at the top of each of the two air ducts. When the cooling demand is low, this utility model can consider operating the fans and heat exchange components on some of the air ducts of the dry cooler to reduce energy consumption and operating costs.

This invention relates to the field of fault diagnosis technology, specifically to an intelligent fault diagnosis method and system for tunnel electromechanical equipment based on big data. It includes: acquiring power consumption data, pollutant concentration, and natural wind speed data; assessing the air supply pressure at each detection point within the tunnel; calculating the effective air supply output of the jet fan at any given detection point; calculating the energy efficiency index and energy efficiency deviation of the jet fan at that detection point; identifying faulty jet fans and calculating their fault severity, thereby performing fault diagnosis for each faulty jet fan. This invention can significantly improve the accuracy and maintenance efficiency of fault diagnosis for electromechanical equipment within tunnels.

The invention relates to a line loss optimization method and system after a high-proportion distributed power supply accesses a power distribution network, and the method comprises the steps: carrying out the region division of the power distribution network according to the access position of the distributed power supply, and obtaining a plurality of sub-power distribution networks; determining the change of the electric energy output of the sub-distribution network in the time sequence; determining the change of the electric energy input of the sub-distribution network in the time sequence; determining a difference value between the electric energy input change and the electric energy consumption change on the time sequence; a processing mode is selected according to the difference value, when the difference value is a negative difference value, the processing mode comprises energy input increasing, and when the difference value is a positive difference value, the processing mode comprises energy storage unit adding, sub-distribution network voltage increasing and reactive power ratio adjusting. According to the line loss optimization method and system after the high-proportion distributed power supply is connected to the power distribution network, a regionalized management and control mode is provided, the management and control mode can perform nearby processing on the distributed power supply, and the impact of the distributed power supply on the power distribution network is effectively reduced.

This invention discloses a centralized VOCs gas recovery device and process for zero emissions at a station, belonging to the field of ecological governance technology. The specific steps of the process are as follows: I. Before gas recovery, the water cooling system and hydraulic system are debugged and safety parameters are set, while the status of each valve is checked; II. The triethylene glycol tail gas and VOCs gas in the venting main are collected and pretreated, and the pretreated triethylene glycol tail gas and VOCs gas are pressurized in one stage. This invention ensures a non-combustion state, reduces the workload of on-site installation and maintenance, simplifies the overall recovery process, eliminates the need for the high power consumption and complex frequency conversion control of conventional reciprocating machines and screw compressors, reduces energy loss, reduces operating costs, and comprehensively avoids risks such as equipment overpressure, gas backflow, and flare backfire, ensuring system safety and stable recovery efficiency. Therefore, we propose a centralized VOCs gas recovery device and process for zero emissions at a station.

This invention relates to the field of motor drive and frequency conversion control technology, specifically to an intelligent frequency conversion control system for a first-level energy-efficient three-phase asynchronous motor. The system includes: a data acquisition module for acquiring three-phase voltage data, three-phase current data, and speed feedback data output from the frequency converter; an electromechanical feature identification module for performing harmonic analysis based on the three-phase current data and identifying mechanical inertia data, transmission clearance data, and the system's current resonant frequency data; a fatigue risk quantification module for calculating mechanical fatigue penalty integral data in conjunction with subsequent speed and voltage adjustment commands; a joint optimization control module for optimizing a comprehensive objective function including energy consumption and mechanical fatigue indicators; an active damping execution module for generating active damping compensation current data; and an output feedback module for outputting a flexible frequency conversion drive pulse width modulation signal and generating an electromechanical system health assessment report. This invention achieves a joint balance between energy consumption, mechanical fatigue, and operational stability.

The utility model discloses green energy-saving building equipment, and relates to the technical field of energy-saving building equipment, the green energy-saving building equipment comprises a ventilating duct, a filter screen, a first fixing frame and a second fixing frame are fixedly connected in the ventilating duct, a U-shaped sliding frame is slidably connected in the ventilating duct, one end of the U-shaped sliding frame is slidably connected with a sliding rod, and the other end of the U-shaped sliding frame is slidably connected with a second fixing frame. Under the action of a second rotating rod, a connecting base, a mounting rod, a wind cup and a gear which are arranged, wind power drives a first rotating rod to rotate in a ventilation pipeline, external air is sucked into the ventilation pipeline through rotation of fan blades, the external environment is fully utilized, and electric energy consumption is reduced; air sucked into the ventilation pipeline is filtered through the arranged filter screen, the U-shaped sliding frame is driven to slide in the ventilation pipeline, and the filter screen is cleaned through the brush on the side face of the sliding rod, so that normal circulation of the air is guaranteed.

The invention is suitable for the technical field of intelligent control, and provides an anti-condensation heating method and system based on a commercial refrigerator door seal, and the method comprises the steps: responding to a compressor starting instruction, generating and executing a heater starting instruction after preset first waiting time, and then responding to a compressor closing instruction, and after a preset second waiting time, generating and executing a heater turn-off instruction. The heater can be started after a certain time is delayed after the compressor is started, or the heater is closed after a certain time is delayed after the compressor is closed, so that the working time of the heater is greatly shortened. The condensation phenomenon at the door seal position of the refrigerator is effectively prevented, electric energy consumption is remarkably saved, the energy efficiency of the refrigerator is improved, the service life of the refrigerator is prolonged, more efficient temperature management is achieved, and it is ensured that the refrigerator can keep the optimal performance in various environments.

The present application belongs to the technical field of metal matrix composite material preparation, and particularly relates to a preparation method of high-damping aluminum matrix composite material with piezoelectric energy consumption. The preparation method comprises the following steps: (1) performing glue removal and oxidation treatment on the surface of carbon fibers; (2) preparing the treated carbon fibers into porous carbon fiber preforms; (3) laying and growing ZnO nanorod seeds on the surface of the carbon fibers of the preforms; (4) growing ZnO nanorods on the surface of the carbon fibers with the seeds; and (5) infiltrating aluminum alloy into the carbon fiber preforms with the grown ZnO nanorod structures. The prepared ZnO nanorod structure can form a firm combination with the aluminum matrix, and when the composite material is deformed by vibration, the piezoelectric effect is generated, the vibration mechanical energy can be converted into electric energy and consumed, so as to improve the damping vibration absorption performance of the composite material; the ZnO nanorod structure can also form a pinning effect at the interface of the composite material, so as to enhance the interface combination of the composite material and improve the load bearing capacity of the composite material.

The utility model discloses a low-power agricultural equipment control circuit, which is characterized by comprising a processor U1, a micro-control switch unit 1, a micro-control switch unit 2, a communication unit, a sensor acquisition unit power supply connection port and a battery unit, the processor U1 controls the micro-control switch unit 1 to supply power to the power supply connection port of the sensor acquisition unit based on the control signal, controls the micro-control switch unit 2 to supply power to the communication unit, and controls the power consumption mode of the processor U1; power is supplied to the communication unit and the sensor acquisition unit by controlling the on or off state of the micro-control switch unit, and the power consumption mode of the processor U1 is controlled, so that unnecessary power consumption is avoided, the energy consumption of equipment is greatly reduced, the cruising ability of the equipment is improved, remote control is realized, and agricultural production management is facilitated.

The invention discloses a soil moisture meter which comprises a base, an air duct, supporting seats and an air inlet pipe, the vertical air duct is fixed to the middle of the top end of the base, the three vertical supporting seats are fixed to the top end of the base at equal angles relative to the circumference of the air duct, the air inlet pipe is fixed to the bottom of the air duct, and each supporting seat is rotationally connected with a vertical lower flower shaft. Vertical first compression springs are fixed to the top ends of the lower spline shafts correspondingly, and vertical upper spline shafts are coaxially and slidably connected to the top ends of the lower spline shafts correspondingly. When the device is used, the draught fan and the electric heating device are controlled to work, external air can be extracted to be heated and blown to the filter bag, so that a soil sample in the filter bag is dried and dehydrated, hot and humid air generated by drying can preheat the extracted air, the electric energy consumption of the electric heating device is reduced, and meanwhile, the drying efficiency is improved. And the temperature of the heated air is increased, so that the drying and dewatering effects are improved in an auxiliary manner.

The present invention relates to a method and device for controlling the electrical energy consumption of an electric vehicle comprising a touchscreen (13). To this end, initial data representing a request to display graphic content (20) depicting an energy-saving mode of the electric vehicle are received. The graphic content (20) is displayed on the touchscreen (20). This graphic content comprises a set of initial graphic objects (211 to 216), each configured to control the deactivation of at least one function of the electric vehicle. Secondary data representing a touch press on at least one of these graphic objects is received. Upon receipt of the second data, at least one request to deactivate at least one function is transmitted. Figure 2 (for the abstract)

The utility model relates to the technical field of cooling towers, and discloses an adjustable cooling tower water retaining structure which comprises a cooling tower body, a heat dissipation pipeline is fixedly installed at the top of the cooling tower body, a water inlet pipe is arranged in the cooling tower body, and a spray head is fixedly installed at the top of the water inlet pipe. A cleaning mechanism is arranged in the cooling tower body, and a replacing mechanism is arranged in the cooling tower body. Air on the top of the heat dissipation pipeline circulates, then hot air in the cooling tower body can be exhausted, heat dissipation operation can be conveniently conducted on the interior of the cooling tower body, electric energy consumption is reduced, meanwhile, heat dissipation efficiency is improved, an arc-shaped scraper scrapes the surface of a fan-shaped filter plate, and due to the fact that the arc-shaped scraper is of an arc-shaped structure, in the scraping process, the arc-shaped scraper can be scraped by the fan-shaped filter plate. And due to the effect of centrifugal force, impurities can be scraped into the collecting box, then the impurities are collected, incrustation is prevented from being attached to the surface of the fan-shaped filter plate, and normal operation of cooling operation is ensured.

Described are various embodiments of a system and method for utilizing excess generated or supplied electrical power from an electrical storage device for powering an electrical energy consuming device.

This application discloses a billing processing method, system, device, and medium for charging piles, mainly relating to the field of charging pile billing technology. It addresses the problem that current parallel charging technologies on the market mostly involve independent payments, requiring users to open multiple accounts, complete multi-barrel QR code charging, and generate multiple payment records, increasing the complexity of user operations. The method includes: determining whether parallel charging exists at the same charging pile using vehicle information shared in the charging pile's memory; determining whether parallel charging exists at different charging piles using interactive messages returned by the vehicle-side CAN communication harness; when parallel charging exists at the same or different charging piles, the central system designates any charging gun as the master gun; auxiliary guns read the corresponding meter readings at preset intervals and send the meter readings to the master gun; at the end of charging, the auxiliary guns send the meter readings to the master gun; the central system obtains the charging time period and the meter readings of each charging gun from the charging pile, determines the billing interval based on the charging time period, determines the energy consumption corresponding to the billing interval based on the meter readings of each charging gun, and then determines the total cost, generating a consolidated bill.