New energy automobile charging pile carbon metering and accounting method

Abstract

The embodiment of the invention relates to a new energy automobile charging pile carbon metering and accounting method. The method comprises the steps that after a new energy automobile is connected to a charging pile, the charging and discharging type of the current automobile is recognized; if the charging and discharging type is a charging type, calculating a corresponding hybrid power carbon factor according to a power grid carbon emission factor, an energy storage power carbon factor of the vehicle end, battery residual energy and effective charging energy at the time when the charging is finished, and updating the energy storage power carbon factor of the vehicle end based on the hybrid power carbon factor; if the charging and discharging type is a discharging type, the current carbon emission reduction amount of the automobile is calculated based on the hybrid power carbon factor, the discharging power-time curve and the discharging time period of the automobile end and the marginal unit carbon emission factor-time curve of the power grid after the current discharging is finished, and a corresponding automobile discharging carbon metering and accounting record is generated and stored. According to the invention, a carbon metering and accounting mechanism in the discharging process can be provided for the V2G charging pile.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of data processing, in particular to a new energy vehicle charging pile carbon measurement accounting method. BACKGROUND

[0002] With the rapid development of new energy vehicle industry, vehicle-to-grid (V2G) technology is attracting attention because it can realize the bidirectional energy interaction between vehicles and power grids, and the new energy vehicle charging pile with charging and discharging functions based on V2G technology is called V2G charging pile. The traditional one-way charging pile has carbon emission measurement function, but only moving the carbon emission measurement function of the traditional charging pile to the V2G charging pile can only measure and account the carbon emission of the vehicle charging process, but cannot accurately measure the carbon emission of the vehicle discharging process. Due to the lack of carbon measurement and accounting function in the discharging process, the popularization of V2G charging piles is directly hindered. SUMMARY

[0003] The purpose of the present application is to provide a new energy vehicle charging pile carbon measurement accounting method to overcome the defects of the prior art. The present application provides a carbon measurement and accounting mechanism for the discharging process of the V2G charging pile. The accounting mechanism will calculate a hybrid electric carbon factor CEF mix based on the grid-side carbon emission factor CEF in of the current charging, the vehicle's energy storage carbon factor CEF res and the battery remaining energy E res before the current charging, and the overall effective charging energy E val of the current charging, and refresh the vehicle-side energy storage carbon factor based on the hybrid electric carbon factor. The accounting mechanism will extract the energy storage carbon factor stored by the current vehicle at the vehicle end as the current hybrid electric carbon factor CEF mix when the vehicle discharges each time, and based on the vehicle-side discharging power-time curve and the discharging period T, the grid-side marginal unit carbon emission factor-time curve and the current hybrid electric carbon factor CEF mix , the carbon emission reduction amount ΔC = discharge offset carbon amount C offset -discharge carbon emission amount C out of the current discharging of the vehicle is accounted. Through the present application, the technical defects of the lack of carbon measurement and accounting function in the discharging process of the current V2G charging pile can be compensated, and the accounting accuracy of the carbon emission reduction amount ΔC can be improved by introducing the marginal unit carbon emission factor and the hybrid electric carbon factor.

[0004] To achieve the above object, the application provides a new energy automobile charging pile carbon metering and accounting method, which comprises the following steps:

[0005] The charging pile identifies the charging and discharging type of the current automobile after connecting with a new energy automobile; the new energy automobile is an electric automobile; the charging pile is a V2G charging pile; the charging and discharging type comprises a charging type and a discharging type;

[0006] If the charging and discharging type is the charging type, the latest grid carbon emission factor CEF in is obtained from the grid side before the current charging; the latest energy storage electric carbon factor and the battery residual energy CEF res , E res of the current automobile are obtained at the starting moment of the current charging; the effective charging energy E val of the current automobile is monitored in real time during the current charging process; the corresponding hybrid electric carbon factor CEF in is calculated according to the grid carbon emission factor CEF res , the energy storage electric carbon factor CEF res , the battery residual energy E val and the effective charging energy E mix at the ending moment of the current charging; and the energy storage electric carbon factor of the vehicle end is refreshed based on the hybrid electric carbon factor CEF mix ;

[0007] If the charging and discharging type is the discharging type, the latest energy storage electric carbon factor of the vehicle end is obtained from the current automobile as the current hybrid electric carbon factor CEF start at the starting moment t mix of the current discharging; the discharging power-time curve of the current automobile is monitored in real time during the current discharging process; the discharging time period T is composed of the starting moment t end of the current discharging and the ending moment t start of the current discharging at the ending moment t end of the current discharging; the marginal unit carbon emission factor-time curve corresponding to the discharging time period T is obtained from the grid side; the carbon emission reduction amount △C of the current automobile is accounted based on the discharging power-time curve , the discharging time period T, the marginal unit carbon emission factor-time curve and the hybrid electric carbon factor CEF mix ; and the carbon emission reduction amount △C of the current automobile is accounted based on the basic information of the current automobile, the discharging time period T, the marginal unit carbon emission factor-time curve and the hybrid electric carbon factor CEF mixThe automobile discharge carbon measurement accounting record corresponding to the carbon emission reduction ΔC is calculated and stored.

[0008] Preferably, the effective charging energy E for the current car val Conduct real-time monitoring, including:

[0009] During the charging process, the charging pile monitors the input voltage and input current of the grid side in real time to obtain the corresponding input voltage-time curve. and input current-time curve Wherein, the input voltage-time curve It is a two-dimensional curve with time t as the horizontal axis and real-time voltage value as the vertical axis; the input current-time curve It is a two-dimensional curve with time t as the horizontal axis and real-time current value as the vertical axis;

[0010] Based on the input voltage-time curve And the input current-time curve Input power-time curve to the grid side Refresh in real time. Wherein, the input power-time curve It is a two-dimensional curve with time t as the horizontal axis and real-time power value as the vertical axis;

[0011] And the latest input power-time curve Integrate to get the latest input electric energy E in , Wherein, the input electrical energy E in The integration period is the input power-time curve Curve period;

[0012] And based on the charging efficiency η of the charging pile itself in and the latest input electrical energy E in Calculate the latest effective charging energy E val , E val =η in ×E in .

[0013] Furthermore, the charging pile calculates the input electric energy E in Convert the continuous integral to a discrete summation when :

[0014]

[0015] 1≤sampling period index i≤N1;

[0016] Among them, L Pthe total length of the curve period of the input power-time curve ; △t is a preset first sampling period length, the first sampling period length △t can be divided by the total length of the curve period L P ; N1 is the total number of sampling periods of the input power-time curve ; the curve period of the input power-time curve is continuously and evenly divided into N1 sampling periods s with a length of △t from the starting time; i is the starting time of the sampling period s i corresponding real-time power value on the input power-time curve , or the average of the two real-time power values corresponding to the starting and ending time of the sampling period s i on the input power-time curve .

[0017] Preferably, the corresponding hybrid carbon factor CEF in is calculated according to the grid carbon emission factor CEF res , the energy storage carbon factor CEF res , the battery remaining energy E val and the effective charging energy E mix , specifically including:

[0018]

[0019] Preferably, the discharge power-time curve of the current car is monitored in real time, specifically including:

[0020] The output voltage-time curve and the output current-time curve of the current car are obtained by monitoring the output voltage and output current of the current car in real time during the current discharge process. The output voltage-time curve is a two-dimensional curve with time t as the horizontal axis and real-time voltage value as the vertical axis; the output current-time curve

[0021] The discharge power-time curve of the current car is refreshed in real time based on the output voltage-time curve and the output current-time curve , The discharge power-time curve ​is a two-dimensional curve with time t as the horizontal axis and real-time power value as the vertical axis.

[0022] Preferably, the marginal unit carbon emission factor-time curve is a two-dimensional curve with time t as the horizontal axis and grid marginal unit carbon emission factor as the vertical axis; the grid marginal unit is the marginal unit corresponding to the current charging pile in the grid; the curve period of the marginal unit carbon emission factor-time curve is the discharging period T[t start ,t end ].

[0023] Preferably, the calculation of the current car's carbon emission reduction amount △C based on the discharging power-time curve the discharging period T, the marginal unit carbon emission factor-time curve and the hybrid electric carbon factor CEF mix specifically includes:

[0024] The charging pile calculates the corresponding discharging offset carbon amount C offset based on the discharging power-time curve the discharging period T, the marginal unit carbon emission factor-time curve and the discharging efficiency η out ;

[0025]

[0026] And the corresponding discharging carbon emission amount C out is calculated based on the discharging power-time curve the discharging period T, the hybrid electric carbon factor CEF mix and the discharging efficiency η out ;

[0027]

[0028] The corresponding carbon emission reduction amount △C is calculated based on the discharging offset carbon amount C offset and the discharging carbon emission amount C out ;

[0029] △C=C offset -C out .

[0030] Further, the charging pile converts continuous integration into discrete summation when calculating the discharging offset carbon amount C offset and the discharging carbon emission amount C out :

[0031]

[0032] 1≤ sampling time period index j ≤ N2;

[0033] wherein, L T is the total duration of the discharging period T; △t' is a preset second sampling time period duration, the second sampling time period duration △t' can be divided by the total duration L T integraleven times; N2 is the total number of sampling time periods of the discharging period T; the discharging period T is continuously divided into N2 sampling time periods s start with a duration of △t' from the discharging starting time t j ; is the starting time of the sampling time period s j corresponding to the real-time power value on the discharging power-time curve , or the average of the two real-time power values corresponding to the starting and ending time of the sampling time period s j on the discharging power-time curve ; is the starting time of the sampling time period s j corresponding to the real-time carbon emission factor on the marginal unit carbon emission factor-time curve , or the average of the two real-time carbon emission factors corresponding to the starting and ending time of the sampling time period s j on the marginal unit carbon emission factor-time curve .

[0034] The embodiment of the present application provides a carbon metering and accounting method for a new energy vehicle charging pile. As known from the above content, the embodiment of the present application gives a carbon metering and accounting mechanism for a discharging process of a V2G charging pile; the accounting mechanism will calculate a hybrid electric carbon factor CEF in based on the grid-side carbon emission factor CEF res of the current charging, the vehicle-side energy storage electric carbon factor CEF res and the battery residual energy E val of the vehicle before the current charging, and the overall effective charging energy E mix of the current charging, and refresh the vehicle-side energy storage electric carbon factor based on the hybrid electric carbon factor; the accounting mechanism will extract the vehicle-side energy storage electric carbon factor stored by the current vehicle as the current hybrid electric carbon factor CEF mix when the vehicle discharges, and based on the vehicle-side discharging power-time curve and the discharging period T of the current discharging process, the marginal unit carbon emission factor-time curve of the grid side during the current discharging process, and the current hybrid electric carbon factor CEF mixThe carbon emission reduction amount ΔC generated by the discharging of the vehicle this time is equal to the discharging offset carbon amount C offset The discharging carbon emission amount C out is calculated. Through the embodiment of the present application, on the one hand, the technical defects of the lack of carbon measurement and calculation function of the discharging process of the V2G charging pile at present are made up; on the other hand, the calculation accuracy of the carbon emission reduction amount ΔC is improved by introducing the marginal unit carbon emission factor and the hybrid electric carbon factor. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A new energy vehicle charging pile carbon measurement and calculation method provided by the embodiment of the present application is shown in the schematic diagram. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] The new energy vehicle charging pile carbon measurement and calculation method provided by the embodiment of the present application is as follows: Figure 1 As shown in the schematic diagram of the new energy vehicle charging pile carbon measurement and calculation method provided by the embodiment of the present application, the method mainly includes the following steps:

[0038] Step 1, after a charging pile is connected to a new energy vehicle, the charging and discharging type of the current vehicle is identified.

[0039] Here, the new energy vehicle of the embodiment of the present application is an electric vehicle, and the charging pile is a V2G charging pile; the charging and discharging type includes a charging type and a discharging type.

[0040] Step 2, if the charging and discharging type is the charging type, the latest grid carbon emission factor CEF in from the grid side is obtained before the present charging; and the latest energy storage electric carbon factor CEF res and the battery residual energy E res from the current vehicle are obtained at the starting moment of the present charging; the effective charging energy E val of the current vehicle is monitored in real time during the present charging; and the corresponding hybrid electric carbon factor CEF mix is calculated according to the grid carbon emission factor CEF in , the energy storage electric carbon factor CEF res , the battery residual energy E res and the effective charging energy E val at the end moment of the present charging; and the hybrid electric carbon factor CEF mix is used as the carbon measurement and calculation result of the present charging.mix refreshing the energy storage electric carbon factor of the vehicle end;

[0041] Specifically, step 21, if the charging and discharging type is a charging type, obtaining the latest grid carbon emission factor CEF from the grid side before the current charging in ;

[0042] Here, the charging pile of the embodiment of the application will establish a data transmission channel with the data center of the grid side after successful startup, which is referred to as a pile-net data channel; and before charging the newly accessed new energy vehicle each time, the latest grid carbon emission factor CEF is obtained from the data center of the grid side through the pile-net data channel in ;

[0043] Step 22, and at the start time of the current charging, obtaining the latest energy storage electric carbon factor and battery residual energy of the vehicle end from the current vehicle, which are referred to as CEF res and E res ;

[0044] Here, the new energy vehicle of the embodiment of the application will store and update the two parameters of energy storage electric carbon factor and battery residual energy on the storage medium of the vehicle locally;

[0045] The charging pile of the embodiment of the application will establish a data transmission channel with the currently accessed vehicle each time a new energy vehicle is accessed, which is referred to as a pile-vehicle data channel; and at the start time of each charging, the latest energy storage electric carbon factor and battery residual energy of the vehicle end are obtained from the currently charged vehicle through the pile-vehicle data channel as the energy storage electric carbon factor CEF res and the battery residual energy E res ;

[0046] Step 23, and during the current charging process, the effective charging energy E val of the current vehicle is monitored in real time;

[0047] Specifically, step 231, during the current charging process, the input voltage and input current of the grid side are monitored in real time to obtain the corresponding input voltage-time curve and input current-time curve

[0048] The input voltage-time curve is a two-dimensional curve with time t as the horizontal axis and the real-time voltage value as the vertical axis; the input current-time curve is a two-dimensional curve with time t as the horizontal axis and the real-time current value as the vertical axis;

[0049] Here, the charging pile of the embodiment of the present application is provided with corresponding voltage and current sensors at the grid access end, and the input voltage and input current of the grid side can be monitored in real time through the voltage and current sensors to obtain the corresponding input voltage-time curve and input current-time curve

[0050] Step 232, and based on the input voltage-time curve and input current-time curve , the input power-time curve of the grid side is refreshed in real time;

[0051] Here, the calculation principle of the input power-time curve of the embodiment of the present application is as follows:

[0052]

[0053] Wherein, the input power-time curve is a two-dimensional curve with time t as the horizontal axis and real-time power value as the vertical axis;

[0054] Step 233, and the latest input power-time curve is integrated to obtain the latest input electric energy E in ;

[0055] Here, the calculation principle of the input electric energy E in of the embodiment of the present application is as follows:

[0056]

[0057] Wherein, the integral period of the input electric energy E in is the curve period of the input power-time curve ;

[0058] It should be noted that, as shown above, the calculation principle of the input electric energy E in is a continuous integration process, but in order to improve the calculation flexibility and calculation efficiency in the actual calculation process of the charging pile of the embodiment of the present application, the continuous integration process can be converted into a discrete summation process, which is specifically as follows:

[0059]

[0060] 1≤sampling period index i≤N1;

[0061] Wherein, L P is the total length of the curve period of the input power-time curve ; △t is a preset first sampling period length, and the first sampling period length △t can be divided by the total length of the curve period L​P integer division; N1 is the number of sampling periods of the input power-time curve the total number of sampling periods of the input power-time curve The curve period of the input power-time curve is continuously divided into N1 sampling periods s with a time length of △t from the starting time i ; There are two methods of taking values: taking the real-time power value corresponding to the starting time of the sampling period s i on the input power-time curve as or taking the average of the two real-time power values corresponding to the starting and ending times of the sampling period s i on the input power-time curve as

[0062] Step 234, and based on the charging efficiency η in of the charging pile itself and the latest input electric energy E in , calculate the latest effective charging energy E val ;

[0063] Here, the calculation principle of the effective charging energy E val of the embodiment of the application is:

[0064] E val = η in × E in ;

[0065] Wherein, the charging efficiency η in is a pre-set efficiency parameter on the charging column of the embodiment of the application;

[0066] Step 24, and at the end of this charging, according to the grid carbon emission factor CEF in , the energy storage electric carbon factor CEF res , the remaining energy of the battery E res and the effective charging energy E val , calculate the corresponding hybrid electric carbon factor CEF mix ;

[0067] Here, the calculation principle of the hybrid electric carbon factor CEF mix of the embodiment of the application is:

[0068]

[0069] Step 25, and based on the hybrid electric carbon factor CEF mix , refresh the energy storage electric carbon factor of the vehicle end.

[0070] Here, the charging pile of the embodiment of the application calculates the latest hybrid electric carbon factor CEF mixAfterwards, the mixed electricity carbon factor CEF mix is sent to the current charging vehicle, and the current charging vehicle updates the locally stored energy storage electricity carbon factor based on the mixed electricity carbon factor CEF mix . Afterwards, the factor can be directly used to update the locally stored energy storage electricity carbon factor; in addition, it should be noted that the current charging vehicle can also calculate the mixed electricity carbon factor based on the relevant data collected by the vehicle side itself at the end of each charging according to the calculation principle given above, and update the locally stored energy storage electricity carbon factor based on the calculation result.

[0071] Step 3, if the charging and discharging type is a discharging type, at the start time t start of the current discharging, the latest energy storage electricity carbon factor of the vehicle side obtained from the current automobile is taken as the current mixed electricity carbon factor CEF mix , and the discharging power-time curve of the current automobile is monitored in real time during the current discharging process, and at the end time t end of the current discharging, the discharging period T is composed of the start time t start of the discharging and the end time t end , and the marginal unit carbon emission factor-time curve corresponding to the discharging period T is obtained from the grid side, and based on the discharging power-time curve , the discharging period T, the marginal unit carbon emission factor-time curve , and the mixed electricity carbon factor CEF mix , the carbon reduction amount △C of the current automobile is calculated, and based on the basic information of the current automobile, the discharging period T, the marginal unit carbon emission factor-time curve , the mixed electricity carbon factor CEF mix , and the carbon reduction amount △C, the corresponding automobile discharging carbon metering and accounting record is composed and saved.

[0072] Specifically, step 31, if the charging and discharging type is a discharging type, at the start time t start of the current discharging, the latest energy storage electricity carbon factor of the vehicle side obtained from the current automobile is taken as the current mixed electricity carbon factor CEF mix .

[0073] Step 32, and during the current discharging process, the discharging power-time curve of the current automobile is monitored in real time.

[0074] Specifically, step 321, during the current discharging process, the output voltage and output current of the current automobile are monitored in real time to obtain the corresponding output voltage-time curve and output current-time curve

[0075] The output voltage-time curve is a two-dimensional curve with time t as the horizontal axis and real-time voltage value as the vertical axis; and the output current-time curve is a two-dimensional curve with time t as the horizontal axis and real-time current value as the vertical axis.

[0076] Here, the charging pile of the embodiment of the application is provided with corresponding voltage and current sensors at the discharge output end of the new energy vehicle, and the output voltage and output current of the new energy vehicle can be monitored in real time through the voltage and current sensors to obtain the corresponding output voltage-time curve and output current-time curve

[0077] Step 322, and based on the output voltage-time curve and the output current-time curve , the discharge power-time curve of the current vehicle is refreshed in real time.

[0078] Here, the calculation principle of the discharge power-time curve is as follows:

[0079]

[0080] The discharge power-time curve is a two-dimensional curve with time t as the horizontal axis and real-time power value as the vertical axis.

[0081] Step 33, and the discharge period T of this time is composed of the discharge starting time t end of this time and the discharge ending time t start end

[0082] Step 34, and the marginal unit carbon emission factor-time curve corresponding to the discharge period T is obtained from the grid side.

[0083] The marginal unit carbon emission factor-time curve is a two-dimensional curve with time t as the horizontal axis and the marginal unit carbon emission factor of the grid as the vertical axis; the marginal unit of the grid is the marginal unit corresponding to the current charging pile in the grid; the curve period of the marginal unit carbon emission factor-time curve is the discharge period T[t start ,t end ];

[0084] ​Here, after each vehicle discharge is completed, the charging pile of the embodiment of the present invention will provide a pile-network data channel to obtain the carbon emission factor-time curve of the marginal unit corresponding to itself on the grid side during the discharge period T from the data center on the grid side, that is, the marginal unit carbon emission factor-time curve

[0085] Step 35, and based on the discharge power-time curve Discharge period T, marginal unit carbon emission factor-time curve and mixed electrocarbon factor CEF mix Calculate the carbon emission reduction △C of the current car;

[0086] Specifically including: step 351, based on the discharge power-time curve Discharge period T, marginal unit carbon emission factor-time curve and the discharge efficiency of the charging pile itself η out Calculate the corresponding discharge offset carbon amount C offset ;

[0087] Here, the discharge offset carbon amount C in the embodiment of the present invention is offset The calculation principle is:

[0088]

[0089] It should be noted that, as shown above, the discharge offset carbon amount C offset The calculation principle is a continuous integration process. However, in the actual calculation process of the charging pile of the embodiment of the present invention, in order to improve the calculation flexibility and efficiency, this continuous integration process can be converted into a discrete summation process, specifically:

[0090]

[0091] 1≤sampling period index j≤N2;

[0092] Among them, L T is the total duration of the discharge period T; △t' is the preset second sampling period duration, and the second sampling period duration △t' can be divided by the total duration L T N2 is the total number of sampling periods of the discharge period T; the discharge period T is from the discharge start time t start It is continuously divided into N2 sampling periods s with a duration of △t' j ;

[0093] and The value of corresponds to, There are also two ways to obtain the value: set the sampling period s j The starting moment of the discharge power-time curve The corresponding real-time power value is used as Or the sampling period s j The start and end time of the discharge power-time curve The average value of the two corresponding real-time power values ​​is taken as

[0094] and The value of corresponds to, There are also two ways to obtain the value: set the sampling period s j Carbon emission factor-time curve of marginal units on the grid side at the starting time The corresponding real-time carbon emission factor is Or the sampling period s j The starting and ending time of the marginal unit carbon emission factor-time curve The average value of the two corresponding real-time carbon emission factors is used as

[0095] It should be noted that although Each has two ways of taking values, but in actual application, the three ways of taking values ​​should remain corresponding. For example, if Using the average value method The average method should also be used;

[0096] Step 352, and based on the discharge power-time curve Discharge period T, mixed electric carbon factor CEF mix Efficiency η out Calculate the corresponding discharge carbon emissions C out ;

[0097] Here, the discharge carbon emission C of the embodiment of the present invention is out The calculation principle is:

[0098]

[0099] It should be noted that, as shown above, the discharge carbon emissions C out The calculation principle is a continuous integration process. However, in the actual calculation process of the charging pile of the embodiment of the present invention, in order to improve the calculation flexibility and efficiency, this continuous integration process can be converted into a discrete summation process, specifically:

[0100]

[0101] Step 353, and based on the discharge offset carbon amount C offset and discharge carbon emissions C out Calculate the corresponding carbon emission reduction △C;

[0102] Here, the calculation principle of the carbon emission reduction ΔC in the embodiment of the present invention is:

[0103] ΔC=C offset -C out ;

[0104] Step 36, based on the current vehicle basic information, discharge period T, marginal unit carbon emission factor-time curve Mixed Electrocarbon Factor CEF mix The automobile discharge carbon measurement accounting records corresponding to the carbon emission reduction △C are recorded and saved.

[0105] Here, the basic information of the current car is the basic information of the currently discharged new energy vehicle. The charging pile of the embodiment of the present invention can obtain the basic information from the currently discharged new energy vehicle through the pile-vehicle data channel. The basic information should at least include the vehicle license plate identification information. In addition, it can also include a series of vehicle factory information such as vehicle model, manufacturer, vehicle color, etc., and can also include other extended information customized based on application requirements.

[0106] It should also be noted that the charging pile of the embodiment of the present invention can synchronize the current record to the data center on the grid side through the pile-network data channel after generating and saving each car discharge carbon measurement and accounting record, or synchronize the current record to another designated carbon measurement and accounting data center through another designated data channel; it can also package all car discharge carbon measurement and accounting records in the most recent designated period into a record data packet at regular intervals, and send the current record data packet to the data center on the grid side through the pile-network data channel, or send the current record data packet to another designated carbon measurement and accounting data center through another designated data channel. In this way, various remote data centers can obtain the discharge trajectory and carbon measurement trajectory of all new energy vehicles in a timely manner.

[0107] In summary, the embodiment of the present invention provides a carbon measurement and accounting method for new energy vehicle charging piles. As can be seen from the above content, the embodiment of the present invention provides a carbon measurement and accounting mechanism for the discharge process for V2G charging piles; this accounting mechanism calculates the carbon emission factor CEF of the grid side of each charging according to the carbon emission factor CEF of the grid side of each charging at the end of each vehicle charging. in , the vehicle's energy storage carbon factor CEF before charging res and the remaining battery energy E res , and the overall effective charging energy E of the current charge val Calculate a mixed electric carbon factor CEF mix , and based on the hybrid electric carbon factor, the vehicle-side energy storage electric carbon factor is refreshed; this accounting mechanism extracts the current vehicle's energy storage electric carbon factor stored on the vehicle side as the current hybrid electric carbon factor CEF each time the vehicle is started. mixand the vehicle-side discharging power-time curve of the current discharging process when the current vehicle discharging ends and the marginal unit carbon emission factor-time curve of the grid side during the discharging period T, the current discharging process and the current hybrid electricity carbon factor CEF mix The carbon emission reduction amount △C generated by the current vehicle discharging = discharging offset carbon amount C offset The discharging carbon emission amount C out is calculated. Through the embodiments of the present application, on the one hand, the technical defects of the lack of discharging process carbon measurement and accounting function on the current V2G charging pile are made up; on the other hand, the calculation accuracy of the carbon emission reduction amount △C is improved by introducing the marginal unit carbon emission factor and the hybrid electricity carbon factor.

[0108] Those skilled in the art will further appreciate that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or combinations of both. To clearly illustrate the interchangeability of hardware and software, various aspects of examples have been described generally in terms of their functionality, without limitation as to the specific structural means used to implement the examples. Moreover, where a description has been made of an example embodiment in terms of its functional constitution, this has been done for the sake of clarity only, and is not to be taken in a limiting sense, as it is intended to encompass both software and hardware implementations.

[0109] The steps of a method or algorithm described in connection with the embodiments disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0110] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A carbon accounting method for new energy vehicle charging piles, characterized in that: The method comprises: After a new energy vehicle is connected to the charging pile, the charging and discharging type of the current vehicle is identified; the new energy vehicle is an electric vehicle; the charging pile is a V2G charging pile; the charging and discharging type includes charging type and discharging type; If the charge and discharge type is charging type, the latest grid carbon emission factor CEF is obtained from the grid side before this charging. in At the start of this charging, the latest energy storage carbon factor and battery remaining energy are obtained from the current car and recorded as CEF res 、E res ; And in this charging process, the effective charging energy E of the current car val Carry out real-time monitoring; and at the end of this charging, according to the grid carbon emission factor CEF in , the energy storage carbon factor CEF res , the remaining battery energy E res and the effective charging energy E val Calculate the corresponding mixed electric carbon factor CEF mix ; and based on the mixed electric carbon factor CEF mix Refresh the energy storage carbon factor on the vehicle side; If the charge and discharge type is the discharge type, then at the start time t start The latest energy storage carbon factor of the vehicle end is obtained from the current vehicle as the current mixed carbon factor CEF mix ; And in this discharge process, the discharge power-time curve of the current car Carry out real-time monitoring; and at the end of this discharge t end , the discharge starting time t start and the discharge end time t end The discharge period T is formed this time; and the marginal unit carbon emission factor-time curve corresponding to the discharge period T is obtained from the grid side Based on the discharge power-time curve The discharge period T, the carbon emission factor-time curve of the marginal unit and the mixed electrocarbon factor CEF mix Calculate the carbon emission reduction ΔC of the current car; and calculate the carbon emission reduction ΔC of the current car based on the basic information of the current car, the discharge period T, and the carbon emission factor-time curve of the marginal unit. The mixed electrocarbon factor CEF mix The automobile discharge carbon measurement corresponding to the carbon emission reduction ΔC is recorded and saved.

2. The carbon accounting method for new energy vehicle charging piles according to claim 1 is characterized in that: The effective charging energy E for the current vehicle val Conduct real-time monitoring, including: During the charging process, the charging pile monitors the input voltage and input current of the grid side in real time to obtain the corresponding input voltage-time curve. And input current-time curve Wherein, the input voltage-time curve It is a two-dimensional curve with time t as the horizontal axis and real-time voltage value as the vertical axis; the input current-time curve It is a two-dimensional curve with time t as the horizontal axis and real-time current value as the vertical axis; Based on the input voltage-time curve And the input current-time curve Input power-time curve to the grid side Refresh in real time. Wherein, the input power-time curve It is a two-dimensional curve with time t as the horizontal axis and real-time power value as the vertical axis; And the latest input power-time curve Integrate to get the latest input electric energy E in , Wherein, the input electrical energy E in The integration period is the input power-time curve Curve period; And based on the charging efficiency η of the charging pile itself in and the latest input electrical energy E in Calculate the latest effective charging energy E val , E val =η in ×E in .

3. The carbon accounting method for new energy vehicle charging piles according to claim 2 is characterized in that: The charging pile calculates the input electric energy E in Convert the continuous integral to a discrete summation when : 1≤sampling period index i≤N1; Among them, L P The input power-time curve The total length of the curve period; △t is the preset first sampling period length, the first sampling period length △t can be the total length of the curve period L P N1 is the input power-time curve The total number of sampling periods; the input power-time curve The curve period is continuously divided into N1 sampling periods s with a duration of △t from the starting time. i ; is the sampling period s i The starting moment of the input power-time curve The corresponding real-time power value, or the sampling period s i The start and end time of the input power-time curve The average value of the two corresponding real-time power values.

4. The carbon accounting method for new energy vehicle charging piles according to claim 1 is characterized in that: According to the grid carbon emission factor CEF in , the energy storage carbon factor CEF res , the remaining battery energy E res and the effective charging energy E val Calculate the corresponding mixed electric carbon factor CEF mix , specifically including:

5. The carbon accounting method for new energy vehicle charging piles according to claim 1 is characterized in that: The discharge power-time curve of the current vehicle Conduct real-time monitoring, including: During the current discharge process, the charging pile monitors the output voltage and output current of the current vehicle in real time to obtain the corresponding output voltage-time curve. And output current-time curve Wherein, the output voltage-time curve It is a two-dimensional curve with time t as the horizontal axis and real-time voltage value as the vertical axis; the output current-time curve It is a two-dimensional curve with time t as the horizontal axis and real-time current value as the vertical axis; Based on the output voltage-time curve And the output current-time curve The discharge power-time curve of the current car Refresh in real time. Wherein, the discharge power-time curve It is a two-dimensional curve with time t as the horizontal axis and real-time power value as the vertical axis.

6. The carbon accounting method for new energy vehicle charging piles according to claim 1 is characterized in that: The marginal unit carbon emission factor-time curve It is a two-dimensional curve with time t as the horizontal axis and the carbon emission factor of the grid marginal unit as the vertical axis; the grid marginal unit is the marginal unit in the grid corresponding to the current charging pile; the carbon emission factor-time curve of the marginal unit The curve period is the discharge period T[t start ,t end ].

7. The carbon accounting method for new energy vehicle charging piles according to claim 1 is characterized in that: Based on the discharge power-time curve The discharge period T, the carbon emission factor-time curve of the marginal unit and the mixed electrocarbon factor CEF mix The carbon emission reduction △C of the current vehicle is calculated, specifically including: The charging pile is based on the discharge power-time curve The discharge period T, the carbon emission factor-time curve of the marginal unit and the discharge efficiency η of the charging pile itself out Calculate the corresponding discharge offset carbon amount C offset ; Based on the discharge power-time curve The discharge period T, the mixed electric carbon factor CEF mix and the release efficiency η out Calculate the corresponding discharge carbon emissions C out ; And based on the discharge offset carbon amount C offset and the discharge carbon emissions C out Calculating the corresponding carbon emission reduction ΔC; ΔC=C offset -C out 。 8. The carbon accounting method for new energy vehicle charging piles according to claim 7 is characterized in that: The charging pile calculates the discharge offset carbon amount C offset and the discharge carbon emissions C out Convert the continuous integral to a discrete summation when : 1≤sampling period index j≤N2; Among them, L T is the total duration of the discharge period T; Δt ’ is the preset second sampling period duration, the second sampling period duration Δt ’ Can be said total length L T N2 is the total number of sampling periods of the discharge period T; the discharge period T is from the discharge start time t start It is divided into N2 equal parts with a duration of △t ’ Sampling period s j ; is the sampling period s j The starting moment of the discharge power-time curve The corresponding real-time power value, or the sampling period s j The start and end time of the discharge power-time curve The average value of the two corresponding real-time power values; is the sampling period s j The starting time of the marginal unit carbon emission factor-time curve The corresponding real-time carbon emission factor, or the sampling period s j The starting and ending time of the marginal unit carbon emission factor-time curve The average value of the two corresponding real-time carbon emission factors.

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