Charging pile metering compensation control method and device, equipment and storage medium

Abstract

The present application relates to the technical field of charging pile, and discloses a charging pile metering compensation control method, device, equipment and storage medium, the method comprises the following steps: calibrating the metering chip according to the gun line loss power of the charging gun line in the target charging pile, the metering chip is used for metering the charging data of the target charging pile; the cumulative line loss power of the target charging pile is calculated based on the gun line loss power; the current charging power corresponding to the target charging pile is obtained through the calibrated metering chip; the target charging pile is metered and compensated based on the cumulative line loss power and the current charging power. The present application calibrates the metering chip through the gun line loss power, and metering and compensates the target charging pile through the calibrated metering chip and the gun line loss power, thereby reducing the influence of the error of the metering chip itself and the line loss of the charging gun line on the charging power in the process of charging the vehicle by the charging pile, and further accurately metering and compensating the new energy vehicle charging pile.

Description

Technical Field

[0001] This invention relates to the field of charging pile technology, and in particular to a charging pile metering compensation control method, device, equipment and storage medium. Background Technology

[0002] Currently, most new energy vehicle charging stations charge based on charging time, without accurately calculating the amount of electricity used. This charging method results in high costs and fails to provide users with accurate information such as the amount of electricity used.

[0003] To accurately measure the electricity consumed by new energy vehicles during charging, existing methods use meters installed in charging stations to detect data such as electricity consumption and power output. However, when calculating charging costs, the meters are located inside the charging station, with the billing point at the charging gun's inlet side. Manufacturers often fail to account for power losses on the charging gun's outlet side, meaning consumers bear these costs, resulting in unreasonable charges and negatively impacting the customer experience. Therefore, the industry urgently needs a more accurate method for metering and compensating for new energy vehicle charging stations.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a charging pile metering compensation control method, device, equipment, and storage medium, aiming to solve the technical problem that existing technologies cannot accurately perform metering compensation for new energy vehicle charging piles.

[0006] To achieve the above objectives, the present invention provides a charging pile metering compensation control method, the method comprising the following steps:

[0007] The metering chip is calibrated based on the power loss of the charging gun wire in the target charging pile. The metering chip is used to measure the charging data of the target charging pile.

[0008] The cumulative line loss power of the target charging pile is calculated based on the line loss power.

[0009] The current charging power of the target charging pile is obtained through the calibrated metering chip.

[0010] The target charging pile is metered and compensated based on the accumulated line loss and the current charging power.

[0011] Optionally, before the step of calibrating the metering chip based on the line loss power of the charging gun in the target charging pile, the method further includes:

[0012] Obtain the length, diameter, and resistivity of the charging gun wire in the target charging pile.

[0013] The resistance of the charging gun wire is determined based on the wire length, wire diameter, and wire resistivity, and the power loss of the charging gun wire is calculated based on the wire resistance.

[0014] Optionally, the step of calibrating the metering chip based on the line loss power of the charging gun in the target charging pile includes:

[0015] The resistance value of the charging gun cable is written into the ATE automatic measurement device to obtain the standard line loss power. The ATE automatic measurement device includes a standard table, which contains the numerical correspondence between the charging gun cable resistance value and the standard line loss power.

[0016] The metering chip is calibrated based on the standard line loss power, the gun line loss power, and the metering chip power.

[0017] Optionally, the step of calibrating the metering chip based on the standard line loss power, the gun line loss power, and the metering chip power includes:

[0018] The power error corresponding to the metering chip is calculated based on the standard line loss power, the gun line loss power, and the metering chip power.

[0019] If the power error meets the acceptable error condition, then the calibration parameters are obtained based on the power error, and the metering chip is calibrated using the calibration parameters.

[0020] If the power error does not meet the acceptable error condition, the power error is increased until the power error reaches the acceptable standard error.

[0021] Optionally, the step of calculating the cumulative line loss of the target charging pile based on the line loss power includes:

[0022] Set a preset collection time, and collect the single line loss power of the target charging pile based on the line loss power at the preset collection time intervals;

[0023] The single-time line loss power is accumulated. When the accumulated single-time line loss power exceeds the preset power or the target charging pile finishes charging, the accumulated single-time line loss power is determined as the cumulative line loss power of the target charging pile.

[0024] Optionally, the step of metering and compensating the target charging pile based on the accumulated line loss and the current charging amount includes:

[0025] The current charging power is subtracted from the accumulated line loss power to obtain the updated current charging power, and the target charging pile is metered and compensated based on the updated current charging power.

[0026] Optionally, the charging pile metering compensation control method further includes:

[0027] If the target charging pile is an already operational charging pile, then the charging pile metering compensation and calibration are performed on the already operational charging pile through remote update software;

[0028] If the target charging pile is an unreleased charging pile, then during the factory calibration stage, the unreleased charging pile will be subject to charging pile metering compensation and calibration.

[0029] Furthermore, to achieve the above objectives, the present invention also proposes a charging pile metering compensation control device, which includes:

[0030] A chip calibration module is used to calibrate a metering chip based on the power loss of the charging gun wire in the target charging pile. The metering chip is used to measure the charging data of the target charging pile.

[0031] The first calculation module is used to calculate the cumulative line loss power of the target charging pile based on the line loss power of the gun.

[0032] The second calculation module is used to obtain the current charging power corresponding to the target charging pile through the calibrated metering chip;

[0033] The metering compensation module is used to perform metering compensation on the target charging pile based on the accumulated line loss and the current charging amount.

[0034] Furthermore, to achieve the above objectives, the present invention also proposes a charging pile metering compensation control device, the device comprising: a memory, a processor, and a charging pile metering compensation control program stored in the memory and executable on the processor, the charging pile metering compensation control program being configured to implement the steps of the charging pile metering compensation control method described above.

[0035] In addition, to achieve the above objectives, the present invention also proposes a storage medium storing a charging pile metering compensation control program, wherein when the charging pile metering compensation control program is executed by a processor, it implements the steps of the charging pile metering compensation control method described above.

[0036] This invention calibrates a metering chip based on the line loss power of the charging gun in the target charging pile. The metering chip measures the charging data of the target charging pile. It calculates the cumulative line loss of the target charging pile based on the line loss power. The current charging power of the target charging pile is obtained through the calibrated metering chip. Measurement compensation is then performed on the target charging pile based on the cumulative line loss and the current charging power. Compared to traditional charging pile metering methods, this invention calibrates the metering chip using line loss power and compensates for the target charging pile using the calibrated chip and line loss power. This reduces the impact of the metering chip's own error and the line loss of the charging gun on the charging power during the charging process, thus enabling more accurate measurement compensation for new energy vehicle charging piles. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the charging pile metering compensation control device in the hardware operating environment of the embodiment of the present invention.

[0038] Figure 2 This is a flowchart illustrating the first embodiment of the charging pile metering compensation control method of the present invention;

[0039] Figure 3 This is a flowchart illustrating the second embodiment of the charging pile metering compensation control method of the present invention;

[0040] Figure 4 This is a flowchart illustrating the third embodiment of the charging pile metering compensation control method of the present invention;

[0041] Figure 5 This is a structural block diagram of the first embodiment of the charging pile metering compensation control device of the present invention.

[0042] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0044] Reference Figure 1 , Figure 1 This is a schematic diagram of the charging pile metering compensation control device structure in the hardware operating environment involved in the embodiments of the present invention.

[0045] like Figure 1As shown, the charging pile metering compensation control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk storage device. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0046] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the metering compensation control device for charging piles, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0047] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a charging pile metering compensation control program.

[0048] exist Figure 1 In the charging pile metering compensation control device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the charging pile metering compensation control device of the present invention can be set in the charging pile metering compensation control device. The charging pile metering compensation control device calls the charging pile metering compensation control program stored in the memory 1005 through the processor 1001 and executes the charging pile metering compensation control method provided in the embodiment of the present invention.

[0049] This invention provides a method for metering compensation control of charging piles, referring to... Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of the charging pile metering compensation control method of the present invention.

[0050] In this embodiment, the charging pile metering compensation control method includes the following steps:

[0051] Step S10: The metering chip is calibrated according to the power loss of the charging gun wire in the target charging pile. The metering chip is used to measure the charging data of the target charging pile.

[0052] It should be noted that the executing entity of the method in this embodiment can be a terminal device with data calculation, data processing, and program execution functions, such as a smartphone or smartwatch, or an electronic device with the same or similar functions, such as the aforementioned charging pile metering compensation control device. The following description uses the charging pile metering compensation control device (hereinafter referred to as the control device) as an example to illustrate this embodiment and the following embodiments. The control device may include an MCU (Microcontroller Unit) main controller, a metering chip, a charging gun cable (including a charging gun and cable) corresponding to the charging pile, a standard meter, a load, an ATE (Automatic Test Equipment) automatic measuring device, an AC220V power supply, etc., and this embodiment does not impose any limitations on these.

[0053] It is understood that the aforementioned target charging pile can be a charging device that provides energy replenishment for new energy vehicles, and the aforementioned charging gun wire can be a wire used to connect the charging pile and the new energy vehicle.

[0054] It should be understood that the aforementioned metering chip is used to measure charging data (such as charging amount, charging voltage, charging time, etc.) during the charging process of the target charging pile. However, in actual new energy vehicle charging scenarios, since the metering chip (or meter) is installed inside the charging pile, and the billing node is located on the charging gun line inlet side, manufacturers often do not consider the power loss on the charging gun line feeder side (i.e., the power loss corresponding to the aforementioned gun line loss power). This cost must be borne by the consumer, resulting in unreasonable charges and affecting the customer's user experience. Therefore, in this embodiment, the metering chip can be calibrated based on the charging gun line loss power, thereby eliminating the impact of the aforementioned technical problem of power loss on the charging gun line feeder side.

[0055] In practice, the parameters in the metering chip can be adjusted to calibrate the chip, thereby avoiding unreasonable charges to customers due to power loss in the charging gun wires of the target charging pile.

[0056] Step S20: Calculate the cumulative line loss power of the target charging pile based on the line loss power of the gun.

[0057] It should be noted that the above-mentioned cumulative line loss power can represent the power loss caused by the charging gun line during the entire process of the target charging pile providing charging services to the vehicle.

[0058] In a practical implementation, the accumulated line loss of the target charging station can be reset to zero before the vehicle starts charging, and the charging process can be started after the reset. When the charging process ends, the control device described in this embodiment calculates the accumulated power loss of the charging gun line during the entire charging process, i.e., the accumulated line loss.

[0059] Step S30: Obtain the current charging power corresponding to the target charging pile through the calibrated metering chip.

[0060] It should be noted that the current charging capacity mentioned above may refer to the charging capacity of the vehicle at the target charging station during a single charging event.

[0061] Understandably, since the metering chip has been calibrated, the power consumption of the target charging station can be counted through the calibrated metering chip to obtain the current charging power consumption.

[0062] Step S40: Perform metering compensation on the target charging pile based on the accumulated line loss and the current charging power.

[0063] It should be understood that while step S30 eliminates the impact of errors in the metering chip on the actual charging capacity, the impact of power loss in the charging gun line on the actual charging capacity remains unresolved. Therefore, metering compensation for the target charging pile can be performed based on the accumulated line loss and the current charging capacity, thereby further improving the metering accuracy of the target charging pile.

[0064] This embodiment calibrates a metering chip based on the line loss power of the charging gun in the target charging pile. The metering chip is used to measure the charging data of the target charging pile. The cumulative line loss of the target charging pile is calculated based on the line loss power. The current charging power of the target charging pile is obtained through the calibrated metering chip. Metering compensation is performed on the target charging pile based on the cumulative line loss power and the current charging power. Compared to traditional charging pile metering compensation control methods, this embodiment calibrates the metering chip using line loss power and performs metering compensation on the target charging pile using the calibrated metering chip and line loss power. This reduces the impact of the metering chip's own error and the line loss of the charging gun on the charging power during the charging process of new energy vehicle charging piles, thus enabling more accurate metering compensation for new energy vehicle charging piles.

[0065] refer to Figure 3 , Figure 3 This is a flowchart illustrating the second embodiment of the charging pile metering compensation control method of the present invention.

[0066] Based on the first embodiment described above, in this embodiment, in order to more accurately calculate the power loss of the charging cable and thus obtain a more precise charging capacity, the following may be included before step S10:

[0067] Step S01: Obtain the length, diameter, and resistivity of the charging gun wire in the target charging pile.

[0068] Step S02: Determine the resistance value of the charging gun wire based on the gun wire length, the gun wire diameter and the gun wire resistivity, and calculate the gun wire loss power based on the gun wire resistance value.

[0069] It should be understood that the cross-sectional area of ​​the charging cable can be calculated from the cable diameter, and then the resistivity can be multiplied by the cross-sectional area to obtain the cable resistance. Furthermore, for charging cables of the same specification (i.e., the same cable diameter and resistivity), the cable resistance is positively correlated with the cable length. For example, if a cable resistance of 40 milliohms corresponds to a 5-meter cable length, then a cable resistance of 56 milliohms corresponds to a 7-meter cable length.

[0070] In a practical implementation, assuming the resistance of the charging gun line is R and the current in the charging gun line is I, the power loss P (line loss) of the charging gun line can be calculated using the following formula: P (line loss) = I * I * R.

[0071] Based on the first embodiment described above, in this embodiment, in order to improve the measurement accuracy of the metering chip, step S10 may include:

[0072] Step S101: Write the resistance value of the charging gun cable into the ATE automatic measurement device to obtain the standard line loss power. The ATE automatic measurement device includes a standard table, which contains the numerical correspondence between the charging gun cable resistance value and the standard line loss power.

[0073] It should be noted that the aforementioned ATE automatic measurement equipment can be a special-purpose device used for automated testing and inspection of electronic or electrical equipment.

[0074] It is understandable that the above standard table can be a mapping table, in which the above gun wire resistance value and the above standard line loss power have a one-to-one correspondence.

[0075] Step S102: Calibrate the metering chip according to the standard line loss power, the gun line loss power, and the metering chip power.

[0076] Furthermore, in this embodiment, in order to ensure that the power error reaches the qualified standard error, thereby improving the reliability of the charging pile metering compensation control method in this embodiment, step S102 may include:

[0077] Step S1021: Calculate the power error corresponding to the metering chip based on the standard line loss power, the gun line loss power, and the metering chip power.

[0078] In practical implementation, the power error corresponding to the above metering chip can be calculated using the following formula:

[0079] Err = (P(chip) - (P(meter) + P(line loss))) / (P(meter) + P(line loss));

[0080] Where Err represents the power error corresponding to the metering chip, P(chip) represents the power of the metering chip, P(meter) represents the standard line loss power, and P(line loss) represents the gun line loss power.

[0081] Step S1022: If the power error meets the acceptable error condition, then the calibration parameters are obtained based on the power error, and the metering chip is calibrated using the calibration parameters.

[0082] It should be noted that the above-mentioned acceptable error condition can be that the power error is lower than the preset error, where the preset error can be 0.8%.

[0083] Step S1023: If the power error does not meet the qualified error condition, the power error is increased until the power error reaches the qualified standard error.

[0084] Understandably, during the calibration process of the metering chip, the metering accuracy and power gain GP1 are related to HFCONST, but not to the effective values ​​of voltage and current. When the absolute value of the fast pulse FCnt / QFCnt register accumulates to equal the value of HFCONST, then there will be a corresponding PF / QF pulse output, and the energy register will be incremented by 1.

[0085] In practice, the calibration of the metering chip can be achieved through coarse calibration, fine calibration, and retesting of accuracy.

[0086] More specifically, during the coarse calibration process, the error accuracy can be adjusted to within 15% using the HFCONST register. Assuming the default value of the HFCONST register is 0x0040 and the initial error of the metering chip is Err%, the error can be adjusted to within 10% using the following formula:

[0087] HFCONST=0x0040*(1+Err%).

[0088] Furthermore, during the fine calibration process, active power can be calculated based on the rated input and power factor of 1. Typically, active power, reactive power, and apparent gain are written with the same value. Again, assuming the initial error of the metering chip is Err%, the power gain GP1 can be calculated using the following formula:

[0089]

[0090] Where, when P gain When >= 0, GP1 = INT[P gain *2 15 ]; When P gain When < 0, GP1 = INT[2 16 +P gain *2 15 ].

[0091] Furthermore, the accuracy can be ensured to be below 1% through a retesting process, with 0.8% as the passing standard. Specifically, the retesting time for a 32A interface charging cable can be 2 minutes, for a 16A interface charging cable can be 4 minutes, and for a 6A interface charging cable can be 10 minutes. This embodiment does not impose any limitations on these requirements.

[0092] This embodiment obtains the length, diameter, and resistivity of the charging gun wire in the target charging pile; determines the wire resistance based on the wire length, diameter, and resistivity, and calculates the wire loss power based on the resistance; writes the wire resistance into an ATE (Automatic Equipment for Measurement) to obtain a standard line loss power, the ATE containing a standard table showing the numerical correspondence between the wire resistance and the standard line loss power; calculates the power error corresponding to the metering chip based on the standard line loss power, the wire loss power, and the metering chip power; if the power error meets the acceptable error condition, calibration parameters are obtained based on the power error, and the metering chip is calibrated using the calibration parameters; if the power error does not meet the acceptable error condition, the power error is increased until the power error reaches the acceptable standard error. Compared to traditional charging pile metering compensation control methods, the method described in this embodiment determines the charging gun wire resistance value by using the gun wire length, gun wire diameter, and gun wire resistivity, calculates the gun wire loss power based on the gun wire resistance value, and finally calculates the power error corresponding to the metering chip by using the standard line loss power, the gun wire loss power, and the metering chip power. Based on this power error, the metering chip is calibrated, thereby improving the metering accuracy of the metering chip.

[0093] refer to Figure 4 , Figure 4This is a flowchart illustrating the third embodiment of the charging pile metering compensation control method of the present invention.

[0094] Based on the above embodiments, in this embodiment, in order to update the cumulative line loss of the target charging pile in real time, step S20 may include:

[0095] Step S201: Set a preset collection time, and collect the single line loss power of the target charging pile based on the line loss power at each preset collection time.

[0096] It should be noted that the above-mentioned preset collection time can be set to 300ms, that is, the single line loss power of the target charging pile can be collected every 300ms based on the line loss power.

[0097] Step S202: Accumulate the single line loss power. When the accumulated single line loss power exceeds the preset power or the target charging pile finishes charging, determine the accumulated single line loss power as the cumulative line loss power of the target charging pile.

[0098] It should be noted that the preset power level can be 1Wh. That is, if the accumulated single line loss power level exceeds 1Wh or the target charging station finishes charging, the accumulated single line loss power level can be determined as the cumulative line loss power level of the target charging station.

[0099] Step S401: Subtract the accumulated line loss from the current charging power to obtain the updated current charging power, and perform metering compensation on the target charging pile based on the updated current charging power.

[0100] Furthermore, in this embodiment, in order to enable metering compensation and calibration for both operational and non-operational charging piles, thereby improving the applicability of this embodiment to different application scenarios and optimizing the customer's user experience, the charging pile metering compensation control method may further include:

[0101] Step S50: If the target charging pile is an operational charging pile, then the metering compensation and calibration of the operational charging pile are performed through remote update software.

[0102] In practical implementation, to address the potential for different line losses due to varying cable lengths in different shipments, software and ATE interfaces can be reserved in the already operational charging piles. This allows for remote software updates to perform metering compensation and calibration on the already operational charging piles.

[0103] Step S60: If the target charging pile is an un-shipped charging pile, then the un-shipped charging pile is subjected to charging pile metering compensation and calibration during the factory calibration stage.

[0104] In practice, for charging piles that have not yet left the factory, metering compensation and calibration can be performed on the charging piles during the factory calibration stage by using the ate terminal or by burning new software.

[0105] More specifically, the metering compensation control of the aforementioned charging piles can be achieved through the following units: Management and Control Unit: This unit provides centralized management of the charging piles' operation, calculates and processes charging energy information to obtain reasonable energy consumption. Calibration and Writing Unit: This unit calibrates the metering chip's accuracy before shipment, taking into account line loss. Energy Metering Unit: This unit stores accurate energy metering values ​​and accumulates line loss energy. Timing Acquisition Unit: This unit collects data to set the line loss compensation time (T). Software Update Unit: This unit allows for remote updates to outdated line loss programs.

[0106] This embodiment sets a preset collection time and collects the single-cycle line loss power of the target charging pile based on the line loss power at preset collection times. The single-cycle line loss power is accumulated, and when the accumulated single-cycle line loss power exceeds a preset power or the target charging pile finishes charging, the accumulated single-cycle line loss power is determined as the cumulative line loss power of the target charging pile. The current charging power is subtracted from the cumulative line loss power to obtain the updated current charging power, and the target charging pile is metered and compensated based on the updated current charging power. If the target charging pile is an operational charging pile, the metering compensation and calibration of the operational charging pile are performed through remote update software. If the target charging pile is an un-manufactured charging pile, the metering compensation and calibration of the un-manufactured charging pile are performed during the factory calibration stage. Compared to traditional charging pile metering compensation control methods, the method described in this embodiment collects the single line loss power of the target charging pile based on the gun line loss power at preset collection intervals, thereby realizing real-time updates of the cumulative line loss power of the target charging pile, thus improving the real-time performance of the charging pile metering compensation control method in this embodiment; at the same time, it provides different charging pile metering compensation and calibration schemes for charging piles already in operation and charging piles not yet shipped, thereby improving the applicability of this embodiment to different application scenarios and optimizing the customer's user experience.

[0107] Furthermore, this embodiment of the invention also proposes a storage medium storing a charging pile metering compensation control program. When the charging pile metering compensation control program is executed by a processor, it implements the steps of the charging pile metering compensation control method described above.

[0108] Reference Figure 5 , Figure 5 This is a structural block diagram of the first embodiment of the charging pile metering compensation control device of the present invention.

[0109] like Figure 5 As shown, the charging pile metering compensation control device proposed in this embodiment of the invention includes:

[0110] The chip calibration module 501 is used to calibrate the metering chip according to the power loss of the charging gun line in the target charging pile. The metering chip is used to measure the charging data of the target charging pile.

[0111] The first calculation module 502 is used to calculate the cumulative line loss power of the target charging pile based on the line loss power of the gun.

[0112] The second calculation module 503 is used to obtain the current charging power corresponding to the target charging pile through the calibrated metering chip;

[0113] The metering compensation module 504 is used to perform metering compensation on the target charging pile based on the accumulated line loss and the current charging power.

[0114] This embodiment calibrates a metering chip based on the line loss power of the charging gun in the target charging pile. The metering chip is used to measure the charging data of the target charging pile. The cumulative line loss of the target charging pile is calculated based on the line loss power. The current charging power of the target charging pile is obtained through the calibrated metering chip. Metering compensation is performed on the target charging pile based on the cumulative line loss power and the current charging power. Compared to traditional charging pile metering methods, this embodiment calibrates the metering chip using line loss power and compensates for the target charging pile using the calibrated metering chip and line loss power. This reduces the impact of the metering chip's own error and the line loss of the charging gun on the charging power during the charging process of new energy vehicle charging piles, thus enabling more accurate metering compensation for new energy vehicle charging piles.

[0115] Based on the first embodiment of the charging pile metering compensation control device of the present invention, a second embodiment of the charging pile metering compensation control device of the present invention is proposed.

[0116] In this embodiment, the chip calibration module 501 is further configured to obtain the length, diameter and resistivity of the charging gun wire in the target charging pile; determine the resistance value of the charging gun wire based on the length, diameter and resistivity of the charging gun wire; and calculate the power loss of the charging gun wire based on the resistance value of the charging gun wire.

[0117] Furthermore, the chip calibration module 501 is also used to write the gun wire resistance value of the charging gun wire into the ATE automatic measurement device to obtain the standard line loss power. The ATE automatic measurement device includes a standard table, which contains the numerical correspondence between the gun wire resistance value and the standard line loss power. The metering chip is calibrated according to the standard line loss power, the gun wire loss power, and the metering chip power.

[0118] Furthermore, the chip calibration module 501 is also used to calculate the power error corresponding to the metering chip based on the standard line loss power, the gun line loss power, and the metering chip power; if the power error meets the qualified error condition, then the calibration parameters are obtained based on the power error, and the metering chip is calibrated using the calibration parameters; if the power error does not meet the qualified error condition, then the power error is increased until the power error reaches the qualified standard error.

[0119] Furthermore, the first calculation module 502 is also used to set a preset collection time, and collect the single line loss power of the target charging pile based on the gun line loss power every preset collection time; accumulate the single line loss power, and when the accumulated single line loss power exceeds the preset power or the target charging pile finishes charging, determine the accumulated single line loss power as the cumulative line loss power of the target charging pile.

[0120] Furthermore, the metering compensation module 504 is also used to subtract the accumulated line loss from the current charging power to obtain the updated current charging power, and to perform metering compensation on the target charging pile based on the updated current charging power.

[0121] Furthermore, the metering compensation module 504 is also used to perform metering compensation and calibration on the charging pile that is already in operation by remotely updating the software if the target charging pile is an already in operation charging pile; and to perform metering compensation and calibration on the un-manufactured charging pile during the factory calibration stage if the target charging pile is an un-manufactured charging pile.

[0122] Other embodiments or specific implementations of the charging pile metering compensation control device of the present invention can be referred to the above-described method embodiments, and will not be repeated here.

[0123] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0124] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0125] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory / random access memory, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0126] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for metering compensation control of charging piles, characterized in that, The method includes the following steps: Obtain the length, diameter, and resistivity of the charging gun wire in the target charging pile. The resistance of the charging gun wire is determined based on the length, diameter, and resistivity of the gun wire, and the power loss of the gun wire is calculated based on the resistance of the gun wire. The metering chip is calibrated based on the power loss of the charging gun wire in the target charging pile. The metering chip is used to measure the charging data of the target charging pile. The cumulative line loss power of the target charging pile is calculated based on the line loss power. The current charging power of the target charging pile is obtained through the calibrated metering chip. The target charging pile is metered and compensated based on the accumulated line loss and the current charging power. The step of calibrating the metering chip based on the power loss of the charging gun wires in the target charging pile includes: The resistance value of the charging gun cable is written into the ATE automatic measurement device to obtain the standard line loss power. The ATE automatic measurement device includes a standard table, which contains the numerical correspondence between the charging gun cable resistance value and the standard line loss power. The power error corresponding to the metering chip is calculated based on the standard line loss power, the gun line loss power, and the metering chip power. If the power error meets the acceptable error condition, then the calibration parameters are obtained based on the power error, and the metering chip is calibrated using the calibration parameters. If the power error does not meet the acceptable error condition, the power error is increased until the power error reaches the acceptable standard error.

2. The charging pile metering compensation control method as described in claim 1, characterized in that, The step of calculating the cumulative line loss of the target charging pile based on the line loss power includes: Set a preset collection time, and collect the single line loss power of the target charging pile based on the line loss power at the preset collection time intervals; The single-time line loss power is accumulated. When the accumulated single-time line loss power exceeds the preset power or the target charging pile finishes charging, the accumulated single-time line loss power is determined as the cumulative line loss power of the target charging pile.

3. The charging pile metering compensation control method as described in claim 1, characterized in that, The step of metering and compensating the target charging pile based on the accumulated line loss and the current charging amount includes: The current charging power is subtracted from the accumulated line loss power to obtain the updated current charging power, and the target charging pile is metered and compensated based on the updated current charging power.

4. The charging pile metering compensation control method as described in any one of claims 1 to 3, characterized in that, The method further includes: If the target charging pile is an already operational charging pile, then the charging pile metering compensation and calibration are performed on the already operational charging pile through remote update software; If the target charging pile is an unreleased charging pile, then during the factory calibration stage, the unreleased charging pile will be subject to charging pile metering compensation and calibration.

5. A charging pile metering compensation control device, characterized in that, The charging pile metering compensation control device includes: A chip calibration module is used to calibrate a metering chip based on the power loss of the charging gun wire in the target charging pile. The metering chip is used to measure the charging data of the target charging pile. The first calculation module is used to calculate the cumulative line loss power of the target charging pile based on the line loss power of the gun. The second calculation module is used to obtain the current charging power corresponding to the target charging pile through the calibrated metering chip; The metering compensation module is used to perform metering compensation on the target charging pile based on the accumulated line loss and the current charging amount. The chip calibration module is also used for: Obtain the length, diameter, and resistivity of the charging gun wire in the target charging pile. The resistance of the charging gun wire is determined based on the length, diameter, and resistivity of the gun wire, and the power loss of the gun wire is calculated based on the resistance of the gun wire. The resistance value of the charging gun cable is written into the ATE automatic measurement device to obtain the standard line loss power. The ATE automatic measurement device includes a standard table, which contains the numerical correspondence between the charging gun cable resistance value and the standard line loss power. The power error corresponding to the metering chip is calculated based on the standard line loss power, the gun line loss power, and the metering chip power. If the power error meets the acceptable error condition, then the calibration parameters are obtained based on the power error, and the metering chip is calibrated using the calibration parameters. If the power error does not meet the acceptable error condition, the power error is increased until the power error reaches the acceptable standard error.

6. A charging pile metering compensation control device, characterized in that, The device includes: a memory, a processor, and a charging pile metering compensation control program stored in the memory and executable on the processor, the charging pile metering compensation control program being configured to implement the steps of the charging pile metering compensation control method as described in any one of claims 1 to 4.

7. A storage medium, characterized in that, The storage medium stores a charging pile metering compensation control program, which, when executed by a processor, implements the steps of the charging pile metering compensation control method as described in any one of claims 1 to 4.

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