Method and device for calculating greenhouse gas emission intensity of plug-in hybrid electric vehicle

Abstract

The invention relates to the technical field of automobile greenhouse gas emission, in particular to a method and a device for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle. The emission intensities of carbon dioxide, methane and nitrous oxide in each running cycle of the plug-in hybrid electric vehicle in the electric quantity consumption mode and the pure electricity utilization coefficient are obtained and based on the emission intensities of carbon dioxide, methane and nitrous oxide in the electric quantity maintaining mode; and determining the carbon dioxide emission converted greenhouse gas emission intensity, the methane emission converted greenhouse gas emission intensity and the nitrous oxide emission converted greenhouse gas emission intensity. And determining the power consumption converted greenhouse gas emission intensity according to the power consumption in the power consumption mode and the pure power utilization coefficient. In conclusion, the comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle is determined, evaluation deviation caused by single greenhouse gas or mode accounting is avoided, and the scientificity and integrity of emission evaluation are remarkably improved.

Description

Technical Field

[0001] This specification relates to the technical field of automobile greenhouse gas emission quantification, and in particular to a method and device for calculating the greenhouse gas emission intensity of a plug-in hybrid electric vehicle. Background Art

[0002] Currently, amidst the automotive industry's shift toward electrification, plug-in hybrid electric vehicles (PHEVs) have become a key path to achieving carbon reduction goals by combining the advantages of both electric and fuel-powered vehicles. However, PHEVs still produce greenhouse gas emissions such as CO2, CH4, and N2O when operating in charge depletion (CD) and charge sustaining (CS) modes.

[0003] Current greenhouse gas emission intensity accounting methods have significant limitations: They focus solely on a single greenhouse gas and analyze only a single model, either CD or CS. This results in a failure to systematically integrate the differences in emissions of multiple greenhouse gases under both models, and an inability to accurately calculate actual emission intensity. Ultimately, this disconnect between emission intensity calculations and actual low-carbon contributions makes it difficult to provide effective support for PHEV carbon management and technology optimization throughout its lifecycle.

[0004] To this end, this specification provides a method and device for calculating the greenhouse gas emission intensity of a plug-in hybrid electric vehicle. Summary of the Invention

[0005] This specification provides a method and device for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle to partially solve the above-mentioned problems existing in the prior art.

[0006] This manual adopts the following technical solutions: This manual provides a method for calculating the greenhouse gas emission intensity of plug-in hybrid electric vehicles, including: Obtaining the emission intensities of carbon dioxide, methane, and nitrous oxide for each driving cycle of the plug-in hybrid electric vehicle in the charge consumption mode, and obtaining the pure electric power utilization coefficient for each driving cycle of the plug-in hybrid electric vehicle in the charge consumption mode; and obtaining the emission intensities of carbon dioxide, methane, and nitrous oxide for each driving cycle of the plug-in hybrid electric vehicle in the charge preservation mode; determining, based on the emission intensities of carbon dioxide, methane, and nitrous oxide during each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric power utilization coefficient, and the emission intensities of carbon dioxide, methane, and nitrous oxide during the power maintenance mode of the plug-in hybrid electric vehicle, the greenhouse gas emission intensity converted from carbon dioxide, methane, and nitrous oxide; and determining the greenhouse gas emission intensity converted from electricity consumption according to the electricity consumption of each driving cycle of the plug-in hybrid electric vehicle in the electricity consumption mode and the pure electricity utilization coefficient; The comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle is determined based on the greenhouse gas emission intensity converted from carbon dioxide emissions, the greenhouse gas emission intensity converted from methane emissions, the greenhouse gas emission intensity converted from nitrous oxide emissions, and the greenhouse gas emission intensity converted from electricity consumption.

[0007] Based on the aforementioned technical approaches, accurate emissions accounting for the three major greenhouse gases (CO2, CH4, and N2O) in both CD and CS modes is integrated to support the calculation of the actual greenhouse gas emission intensity of plug-in hybrid electric vehicles (PHEVs). This avoids assessment biases caused by single-gas or single-mode accounting, significantly improving the scientific nature and integrity of emissions assessments, and enhancing the authenticity and representativeness of GHG emission intensity calculations. This solution establishes a scientific, systematic, and operational PHEV GHG emission intensity calculation framework, comprehensively considering key factors such as multiple gases, multiple modes, and indirect emissions from electricity consumption. This significantly improves the accuracy and practicality of calculated GHG emission intensities, aligning with the current trend of carbon neutrality in the transportation sector and providing effective data support for carbon management and technology optimization throughout the PHEV lifecycle.

[0008] Furthermore, the expression for the comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle is:

[0009] in, represents the comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle, 、 and They represent the greenhouse gas emission intensity converted from carbon dioxide emissions, the greenhouse gas emission intensity converted from methane emissions, and the greenhouse gas emission intensity converted from nitrous oxide emissions, respectively. The greenhouse gas emission intensity is converted from the electricity consumption.

[0010] Furthermore, the greenhouse gas emission intensity converted from carbon dioxide emissions is determined based on the carbon dioxide emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric utilization coefficient, and the carbon dioxide emission intensity of the plug-in hybrid electric vehicle in the power preservation mode, specifically including: Determine the global warming potential of the carbon dioxide for the given value; determining a first conversion value of the carbon dioxide according to the carbon dioxide emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the global warming potential of the carbon dioxide, and the pure electricity utilization coefficient; determining a second converted value of the carbon dioxide according to the carbon dioxide emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode, the global warming potential of the carbon dioxide, and the pure electricity utilization coefficient; The greenhouse gas emission intensity converted from carbon dioxide emissions is determined according to the first converted value of carbon dioxide and the second converted value of carbon dioxide.

[0011] Furthermore, the expression for calculating the greenhouse gas emission intensity converted from carbon dioxide emissions is:

[0012] in, Convert the greenhouse gas emission intensity for the carbon dioxide emissions, represents the carbon dioxide emission intensity of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, represents the global warming potential of the carbon dioxide, represents the pure electric utilization coefficient of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, It represents the carbon dioxide emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode.

[0013] Based on the above technical means, the carbon dioxide emissions in the CD / CS mode are clearly distinguished and integrated, realizing a refined, scientific and comparable evaluation of the carbon dioxide emissions of plug-in hybrid vehicles.

[0014] Furthermore, based on the methane emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric utilization coefficient, and the methane emission intensity of the plug-in hybrid electric vehicle in the power maintenance mode, the greenhouse gas emission intensity of methane emissions is determined, specifically including: Determine the global warming potential of methane for a given purpose; determining a first conversion value of the methane according to the methane emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the global warming potential of the methane, and the pure electricity utilization coefficient; determining a second converted value of the methane according to the methane emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode, the global warming potential of the methane, and the pure electricity utilization coefficient; The greenhouse gas emission intensity converted from methane emissions is determined according to the first converted value of methane and the second converted value of methane.

[0015] Furthermore, the expression for calculating the greenhouse gas emission intensity converted from methane emissions is:

[0016] in, Convert the greenhouse gas emission intensity of the methane emission to represents the methane emission intensity of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, represents the global warming potential of said methane, represents the pure electric utilization coefficient of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, It represents the methane emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode.

[0017] According to the above technical means, based on Converting CH4 emissions to CO2 equivalents aligns with international climate science consensus, avoids underestimating methane's actual climate impact, and facilitates a unified framework for calculating CO2, N2O, and electricity emissions. This enables plug-in hybrid vehicle greenhouse gas emissions assessments to move from focusing solely on tailpipe CO2 to a more comprehensive, all-gas, all-process, and all-scenario carbon accounting era, effectively supporting targeted pollution control and green transformation under the "dual carbon" strategy.

[0018] Furthermore, the greenhouse gas emission intensity converted from nitrous oxide emissions is determined based on the nitrous oxide emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric utilization coefficient, and the nitrous oxide emission intensity of the plug-in hybrid electric vehicle in the power preservation mode, specifically including: Determine the global warming potential of nitrous oxide for the given value; determining a first conversion value of the nitrous oxide according to the nitrous oxide emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the global warming potential of the nitrous oxide, and the pure electricity utilization coefficient; determining a second converted value of the nitrous oxide based on the nitrous oxide emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode, the global warming potential of the nitrous oxide, and the pure electricity utilization coefficient; The greenhouse gas emission intensity converted from nitrous oxide emissions is determined according to the first converted value of nitrous oxide and the second converted value of nitrous oxide.

[0019] Furthermore, the expression for calculating the greenhouse gas emission intensity converted from nitrous oxide emissions is:

[0020] in, Convert the greenhouse gas emission intensity of the nitrous oxide emission to represents the nitrous oxide emission intensity of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, represents the global warming potential of the nitrous oxide, represents the pure electric utilization coefficient of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, It represents the nitrous oxide emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode.

[0021] According to the above technical means, based on , achieving accurate conversion of N2O to CO2 equivalents. It comprehensively distinguishes between power consumption and power retention modes, and employs a mathematical structure consistent with the calculation of CO2 and CH4 emissions, facilitating integration into a unified greenhouse gas assessment framework. This makes PHEV greenhouse gas emissions assessment more comprehensive, realistic, and comparable, avoiding the neglect of N2O impacts and accurately accounting for every possible greenhouse gas emission.

[0022] Furthermore, the expression for calculating the greenhouse gas emission intensity converted from electricity consumption is:

[0023] in, The greenhouse gas emission intensity converted from the electricity consumption is: represents the power consumption of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, represents the pure electric utilization coefficient of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, is the energy conversion factor between electricity and gasoline, is the CO2 emission factor of gasoline, is the global warming potential of carbon dioxide.

[0024] Based on the above technical means, the indirect carbon emissions of plug-in hybrid vehicles during the use of electricity are quantified and included in the overall greenhouse gas emissions system in the form of "carbon dioxide equivalent".

[0025] This specification provides a greenhouse gas emission intensity calculation device, including: an acquisition module, configured to acquire the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, for each driving cycle of the plug-in hybrid electric vehicle in a power consumption mode, and to acquire the pure electric power utilization coefficient for each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode; and to acquire the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, for the plug-in hybrid electric vehicle in a power preservation mode; a first determining module, configured to determine, based on the emission intensities of carbon dioxide, methane, and nitrous oxide during each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric power utilization coefficient, and the emission intensities of carbon dioxide, methane, and nitrous oxide during the power maintenance mode of the plug-in hybrid electric vehicle, a greenhouse gas emission intensity converted from carbon dioxide, methane, and nitrous oxide; and a second determining module, configured to determine the greenhouse gas emission intensity converted from electricity consumption according to the electricity consumption of each driving cycle of the plug-in hybrid electric vehicle in the electricity consumption mode and the pure electricity utilization coefficient; The third determination module is used to determine the comprehensive greenhouse gas emission intensity of the plug-in hybrid vehicle based on the greenhouse gas emission intensity converted from carbon dioxide emissions, the greenhouse gas emission intensity converted from methane emissions, the greenhouse gas emission intensity converted from nitrous oxide emissions, and the greenhouse gas emission intensity converted from electricity consumption.

[0026] At least one of the above technical solutions adopted in this specification can achieve the following beneficial effects: By integrating the three major greenhouse gases (CO2, CH4, and N2O) and accurately calculating emissions in both CD and CS modes, this approach supports the calculation of the actual greenhouse gas emission intensity of plug-in hybrid electric vehicles (PHEVs). This avoids assessment biases caused by single-gas or single-mode calculations, significantly improving the scientific nature and integrity of emissions assessments, and enhancing the authenticity and representativeness of GHG emission intensity calculations. This solution establishes a scientific, systematic, and operational PHEV GHG emission intensity calculation framework, comprehensively considering key factors such as multiple gases, multiple modes, and indirect emissions from electricity consumption. This significantly improves the accuracy and practicality of calculated GHG emission intensities, aligning with the current trend toward carbon neutrality in the transportation sector and providing effective data support for carbon management and technology optimization throughout the PHEV lifecycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of this specification and constitute a part of this specification. The exemplary embodiments and descriptions of this specification are used to explain this specification and do not constitute an improper limitation of this specification. In the drawings: Figure 1 A flow chart of a method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle provided in an embodiment of this specification; Figure 2 This is a schematic diagram of a plug-in hybrid electric vehicle greenhouse gas emission intensity calculation device provided in this manual; Figure 3 This manual provides a corresponding Figure 1 Schematic diagram of the structure of the electronic equipment. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of this specification more clear, the technical solutions of this specification will be clearly and completely described below in conjunction with the specific embodiments of this specification and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0029] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0030] The technical solutions provided by the embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0031] Figure 1 A flow chart of a method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle provided in an embodiment of this specification includes the following steps: S1: Obtaining the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, for each driving cycle of a plug-in hybrid electric vehicle in a power consumption mode, and obtaining the pure electric power utilization coefficient for each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode; and obtaining the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, for the plug-in hybrid electric vehicle in a power retention mode.

[0032] In this specification, the process of calculating the greenhouse gas emissions intensity of a plug-in hybrid electric vehicle (PHEV) can be performed by a server in the embodiments of this specification. This specification does not limit the device or platform used to perform this process. For example, a personal computer, mobile terminal, vehicle-mounted system, or onboard electronic control unit (ECU) can also be used to perform the calculation. For ease of description, the following description uses a server as the execution entity.

[0033] In one or more embodiments of the present specification, a server may obtain data generated by a plug-in hybrid electric vehicle (PHEV) during driving in a charge depletion mode (CD mode) and a charge retention mode (CS mode), including the emission intensities of carbon dioxide, methane, and nitrous oxide for each driving cycle of the PHEV in CD mode, as well as the pure electric utilization factor for each driving cycle of the PHEV in CD mode. A driving cycle herein refers to a number of driving cycles divided according to the PHEV's energy consumption range, with each driving cycle being a portion of the range. For example, if a PHEV has an electric driving range (i.e., energy consumption range) of tens to hundreds of kilometers, and the PHEV energy consumption test standard stipulates that every 20-30 kilometers of driving is considered a driving cycle for this PHEV, then this PHEV will have multiple driving cycles in CD mode. Furthermore, the server may obtain the emission intensities of carbon dioxide, methane, and nitrous oxide for the PHEV in CS mode.

[0034] It is worth noting that the emission intensities of CO2, CH4 and N2O can be measured in g / km, mg / km and mg / km respectively.

[0035] S2: Determine the greenhouse gas emission intensity converted from carbon dioxide emissions, the greenhouse gas emission intensity converted from methane emissions, and the greenhouse gas emission intensity converted from nitrous oxide emissions based on the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, during each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric utilization coefficient, and the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, during the power maintenance mode of the plug-in hybrid electric vehicle.

[0036] In one or more embodiments of the present specification, the server may determine the greenhouse gas emission intensity converted from CO2 emissions, the greenhouse gas emission intensity converted from CH4 emissions, and the greenhouse gas emission intensity converted from N2O emissions based on the emission intensities of CO2, CH4, and N2O in each driving cycle of the PHEV in CD mode, the pure electric utilization coefficient of each driving cycle of the PHEV in CD mode, and the emission intensities of CO2, CH4, and N2O in the PHEV in CS mode.

[0037] Specifically, the method for calculating the greenhouse gas emission intensity converted from CO2 emissions can be that the server determines a preset global warming potential value of CO2. Then, based on the CO2 emission intensity of each driving cycle of the PHEV in CD mode, the global warming potential value of CO2, and the pure electric utilization coefficient of each driving cycle of the PHEV in CD mode, a first CO2 conversion value is determined. Thereafter, based on the CO2 emission intensity of the PHEV in CS mode, the global warming potential value of CO2, and the pure electric utilization coefficient of each driving cycle of the PHEV in CD mode, a second CO2 conversion value is determined. Finally, the server determines the greenhouse gas emission intensity converted from CO2 emissions based on the first CO2 conversion value and the second CO2 conversion value. This method can clearly distinguish and integrate CO2 emissions in CD / CS modes, achieving a refined, scientific, and comparable assessment of CO2 emissions from plug-in hybrid electric vehicles.

[0038] The expression for calculating the greenhouse gas emission intensity converted from CO2 emissions is:

[0039] in, Greenhouse gas emission intensity converted from CO2 emissions, with the unit being gCO2e / km. It represents the CO2 emission intensity of the PHEV in the i-th driving cycle in CD mode, in g / km. Indicates the global warming potential of CO2, for example, 1gCO2e / g based on the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). It represents the pure electric utilization coefficient of the PHEV in the i-th driving cycle in CD mode, which can be determined according to Appendix F of the national standard GB / T19753-2021. Indicates the CO2 emission intensity of the PHEV in CS mode, in g / km. The first half of the plus sign in the expression is the first converted value of CO2, and the second half of the plus sign is the second converted value of CO2.

[0040] In one or more embodiments of the present specification, the method for calculating the greenhouse gas emission intensity converted from CH4 emissions may be that the server determines a preset global warming potential value of CH4. Then, based on the emission intensity of CH4 in each driving cycle of the PHEV in CD mode, the global warming potential value of CH4, and the pure electric utilization coefficient of each driving cycle of the PHEV in CD mode, the first conversion value of CH4 is determined. Thereafter, based on the emission intensity of CH4 in CS mode, the global warming potential value of CH4, and the pure electric utilization coefficient of each driving cycle of the PHEV in CD mode, the second conversion value of CH4 is determined. Finally, the server determines the greenhouse gas emission intensity converted from CH4 emissions based on the first conversion value of CH4 and the second conversion value of CH4. Based on Converting CH4 emissions to CO2 equivalents aligns with international climate science consensus, avoids underestimating methane's actual climate impact, and facilitates a unified framework for calculating CO2, N2O, and electricity emissions. This enables plug-in hybrid vehicle greenhouse gas emissions assessments to move from focusing solely on tailpipe CO2 to a more comprehensive, all-gas, all-process, and all-scenario carbon accounting era, effectively supporting targeted pollution control and green transformation under the "dual carbon" strategy.

[0041] The expression for calculating CH4 emissions converted into greenhouse gas emission intensity is:

[0042] in, The greenhouse gas emission intensity converted from CH4 emissions is expressed in gCO2e / km. It represents the CH4 emission intensity of the PHEV in the i-th driving cycle in CD mode, in g / km. Indicates the global warming potential of CH4, for example, 27.9gCO2e / g according to the IPCC Sixth Assessment Report. It represents the pure electric utilization coefficient of the PHEV in the i-th driving cycle in CD mode, and can also be determined according to Appendix F of the national standard GB / T19753-2021. Indicates the CH4 emission intensity of the PHEV in CS mode, in g / km. The first half of the plus sign in the expression is the first converted value of CH4, and the second half of the plus sign is the second converted value of CH4.

[0043] In one or more embodiments of the present specification, the method for calculating the greenhouse gas emission intensity converted from N2O emissions may be that the server determines a preset global warming potential value of N2O. Then, based on the N2O emission intensity of each driving cycle of the PHEV in CD mode, the global warming potential value of N2O, and the pure electric utilization coefficient of each driving cycle of the PHEV in CD mode, the first conversion value of N2O is determined. Thereafter, based on the N2O emission intensity of the PHEV in CS mode, the global warming potential value of N2O, and the pure electric utilization coefficient of each driving cycle of the PHEV in CD mode, the second conversion value of N2O is determined. Finally, the server determines the greenhouse gas emission intensity converted from N2O emissions based on the first conversion value of N2O and the second conversion value of N2O. Based on , achieving accurate conversion of N2O to CO2 equivalents. It comprehensively distinguishes between power consumption and power retention modes, and employs a mathematical structure consistent with the calculation of CO2 and CH4 emissions, facilitating integration into a unified greenhouse gas assessment framework. This makes PHEV greenhouse gas emissions assessment more comprehensive, realistic, and comparable, avoiding the neglect of N2O impacts and accurately accounting for every possible greenhouse gas emission.

[0044] The expression for calculating the greenhouse gas emission intensity converted from N2O emissions is:

[0045] in, Greenhouse gas emission intensity converted from N2O emissions, unit: gCO2e / km. It represents the N2O emission intensity of the PHEV in the i-th driving cycle in CD mode, in g / km. Indicates the global warming potential of N2O, for example, 273gCO2e / g according to the IPCC Sixth Assessment Report. It represents the pure electric utilization coefficient of the PHEV in the i-th driving cycle in CD mode, and can also be determined according to Appendix F of the national standard GB / T19753-2021. Indicates the N2O emission intensity of the PHEV in CS mode, in g / km. The first half of the plus sign in the expression is the first converted value of N2O, and the second half of the plus sign is the second converted value of N2O.

[0046] S3: Determine the greenhouse gas emission intensity converted from electricity consumption according to the electricity consumption of each driving cycle of the plug-in hybrid electric vehicle in the electricity consumption mode and the pure electricity utilization coefficient.

[0047] In one or more embodiments of this specification, because a PHEV consumes electricity in CD mode, and the production of electricity generates greenhouse gas emissions, it is necessary to convert electricity consumption into corresponding greenhouse gas emissions. Therefore, the server can determine the greenhouse gas emission intensity converted from electricity consumption based on the electricity consumption of each driving cycle of the PHEV in CD mode and the pure electric utilization factor of each driving cycle of the PHEV in CD mode.

[0048] The expression for calculating the greenhouse gas emission intensity converted from electricity consumption is:

[0049] in, It is the greenhouse gas emission intensity converted from electricity consumption, with the unit being gCO2e / km. It represents the power consumption of the PHEV in the i-th driving cycle in CD mode, in kWh / 100km. It represents the pure electric utilization coefficient of the PHEV in the i-th driving cycle in CD mode, which can be determined according to Appendix F of the national standard GB / T19753-2021. The preset energy conversion factor between electricity and gasoline can be taken as 0.1161L / kWh according to the standard GB / T 37340-2019. The preset carbon dioxide emission factor of gasoline can be taken as 2.38kg / L according to the standard GB / T37340-2019. is the global warming potential of carbon dioxide, which can be taken as 1gCO2e / g according to the IPCC Sixth Assessment Report. 、 、 The unit of greenhouse gas emission intensity calculated by the PHEV is g CO2e / km, which means grams of carbon dioxide equivalent per kilometer. It is used to measure the total greenhouse gas emissions generated by PHEV vehicles for each kilometer traveled, which has been converted into carbon dioxide equivalent. When, in order to 、 、 The units are consistent, so multiply by 10 at the end of the expression.

[0050] S4: Determine the comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle based on the greenhouse gas emission intensity converted from carbon dioxide emissions, the greenhouse gas emission intensity converted from methane emissions, the greenhouse gas emission intensity converted from nitrous oxide emissions, and the greenhouse gas emission intensity converted from electricity consumption.

[0051] In one or more embodiments of the present specification, the server determines the comprehensive greenhouse gas emission intensity of the plug-in hybrid vehicle based on the greenhouse gas emission intensity converted from the carbon dioxide emissions, the greenhouse gas emission intensity converted from the methane emissions, the greenhouse gas emission intensity converted from the nitrous oxide emissions, and the greenhouse gas emission intensity converted from the electricity consumption.

[0052] The expression for calculating the comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle is:

[0053] in, represents the greenhouse gas emission intensity of PHEV, 、 and They represent the greenhouse gas emission intensity converted from CO2 emissions, the greenhouse gas emission intensity converted from CH4 emissions, and the greenhouse gas emission intensity converted from N2O emissions. Greenhouse gas emission intensity calculated for electricity consumption.

[0054] based on Figure 1 The proposed method for calculating the greenhouse gas emissions intensity of plug-in hybrid electric vehicles (PHEVs) integrates the precise emission accounting of three major greenhouse gases (CO2, CH4, and N2O) in both CD and CS modes. This method supports the actual GHG emissions intensity calculation of PHEVs, avoiding assessment biases caused by single-gas or single-mode accounting. This significantly improves the scientific nature and integrity of emissions assessments, as well as the authenticity and representativeness of GHG emissions intensity calculations. This proposal establishes a scientific, systematic, and operational PHEV GHG emissions intensity calculation framework, comprehensively considering key factors such as multiple gases, multiple modes, and indirect emissions from electricity consumption. This significantly improves the accuracy and practicality of calculated GHG emissions intensity, aligning with the current trend toward carbon neutrality in the transportation sector and providing effective data support for carbon management and technology optimization throughout the PHEV lifecycle.

[0055] The above is a method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle provided by one or more embodiments of this specification. Based on the same idea, this specification also provides a corresponding device for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle, such as Figure 2 shown.

[0056] Figure 2 This specification provides a schematic diagram of a plug-in hybrid electric vehicle greenhouse gas emission intensity calculation device, specifically including: an acquisition module 200 for acquiring the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, for each driving cycle of the plug-in hybrid electric vehicle in a power consumption mode, and acquiring the pure electric power utilization coefficient of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode; and acquiring the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, for the plug-in hybrid electric vehicle in a power preservation mode; a first determining module 202 configured to determine a greenhouse gas emission intensity converted from carbon dioxide emissions, a greenhouse gas emission intensity converted from methane emissions, and a greenhouse gas emission intensity converted from nitrous oxide emissions based on the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, during each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric power utilization coefficient, and the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, during the power maintenance mode of the plug-in hybrid electric vehicle; A second determining module 204 is configured to determine the greenhouse gas emission intensity converted from electricity consumption according to the electricity consumption of each driving cycle of the plug-in hybrid electric vehicle in the electricity consumption mode and the pure electricity utilization coefficient; The third determination module 206 is configured to determine the comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle based on the greenhouse gas emission intensity converted from carbon dioxide emissions, the greenhouse gas emission intensity converted from methane emissions, the greenhouse gas emission intensity converted from nitrous oxide emissions, and the greenhouse gas emission intensity converted from electricity consumption.

[0057] This specification also provides a computer-readable storage medium, which stores a computer program that can be used to execute the above Figure 1 A method for calculating the greenhouse gas emission intensity of plug-in hybrid electric vehicles is provided.

[0058] This manual also provides Figure 3 The schematic structure diagram of the electronic device shown in FIG. Figure 3 As shown, at the hardware level, the electronic device includes a processor, an internal bus, a network interface, a memory, and a non-volatile memory, and may also include other hardware required for the business. The processor reads the corresponding computer program from the non-volatile memory into the memory and then runs it to achieve the above Figure 1 The method for calculating greenhouse gas emission intensity of plug-in hybrid electric vehicles.

[0059] Of course, in addition to software implementation, this specification does not exclude other implementation methods, such as logic devices or a combination of software and hardware, etc. That is to say, the execution subject of the following processing flow is not limited to each logic unit, but can also be hardware or logic devices.

[0060] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0061] The foregoing is merely an example of the present invention and is not intended to limit the present invention. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A method for calculating greenhouse gas emission intensity of plug-in hybrid electric vehicles, characterized in that: include: Obtaining the emission intensities of carbon dioxide, methane, and nitrous oxide for each driving cycle of the plug-in hybrid electric vehicle in the charge consumption mode, and obtaining the pure electric power utilization coefficient for each driving cycle of the plug-in hybrid electric vehicle in the charge consumption mode; and obtaining the emission intensities of carbon dioxide, methane, and nitrous oxide for each driving cycle of the plug-in hybrid electric vehicle in the charge preservation mode; determining, based on the emission intensities of carbon dioxide, methane, and nitrous oxide during each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric power utilization coefficient, and the emission intensities of carbon dioxide, methane, and nitrous oxide during the power maintenance mode of the plug-in hybrid electric vehicle, the greenhouse gas emission intensity converted from carbon dioxide, methane, and nitrous oxide; and determining the greenhouse gas emission intensity converted from electricity consumption according to the electricity consumption of each driving cycle of the plug-in hybrid electric vehicle in the electricity consumption mode and the pure electricity utilization coefficient; The comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle is determined based on the greenhouse gas emission intensity converted from carbon dioxide emissions, the greenhouse gas emission intensity converted from methane emissions, the greenhouse gas emission intensity converted from nitrous oxide emissions, and the greenhouse gas emission intensity converted from electricity consumption.

2. The method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle according to claim 1, wherein: The expression for the comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle is: in, represents the comprehensive greenhouse gas emission intensity of the plug-in hybrid electric vehicle, 、 and They represent the greenhouse gas emission intensity converted from carbon dioxide emissions, the greenhouse gas emission intensity converted from methane emissions, and the greenhouse gas emission intensity converted from nitrous oxide emissions, respectively. The greenhouse gas emission intensity is converted from the electricity consumption.

3. The method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle according to claim 2, wherein: Determining the greenhouse gas emission intensity converted from carbon dioxide emissions based on the carbon dioxide emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric utilization coefficient, and the carbon dioxide emission intensity of the plug-in hybrid electric vehicle in the power preservation mode, specifically includes: Determine the global warming potential of the carbon dioxide for the given value; determining a first conversion value of the carbon dioxide according to the carbon dioxide emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the global warming potential of the carbon dioxide, and the pure electricity utilization coefficient; determining a second converted value of the carbon dioxide according to the carbon dioxide emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode, the global warming potential of the carbon dioxide, and the pure electricity utilization coefficient; The greenhouse gas emission intensity converted from carbon dioxide emissions is determined according to the first converted value of carbon dioxide and the second converted value of carbon dioxide.

4. The method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle according to claim 3, wherein: The expression for calculating the greenhouse gas emission intensity converted from carbon dioxide emissions is: in, Convert the greenhouse gas emission intensity for the carbon dioxide emissions, represents the carbon dioxide emission intensity of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, represents the global warming potential of the carbon dioxide, represents the pure electric utilization coefficient of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, It represents the carbon dioxide emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode.

5. The method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle according to claim 2, wherein: Determining the greenhouse gas emission intensity converted from methane emissions based on the methane emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric utilization coefficient, and the methane emission intensity of the plug-in hybrid electric vehicle in the power preservation mode, specifically including: Determine the global warming potential of methane for a given purpose; determining a first conversion value of the methane according to the methane emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the global warming potential of the methane, and the pure electricity utilization coefficient; determining a second converted value of the methane according to the methane emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode, the global warming potential of the methane, and the pure electricity utilization coefficient; The greenhouse gas emission intensity converted from methane emissions is determined according to the first converted value of methane and the second converted value of methane.

6. The method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle according to claim 5, wherein: The expression for calculating the greenhouse gas emission intensity converted from methane emissions is: in, Convert the greenhouse gas emission intensity of the methane emission to represents the methane emission intensity of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, represents the global warming potential of said methane, represents the pure electric utilization coefficient of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, It represents the methane emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode.

7. The method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle according to claim 2, wherein: Determining the greenhouse gas emission intensity converted from nitrous oxide emissions based on the nitrous oxide emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric utilization coefficient, and the nitrous oxide emission intensity of the plug-in hybrid electric vehicle in the power preservation mode, specifically including: Determine the global warming potential of nitrous oxide for the given value; determining a first conversion value of the nitrous oxide according to the nitrous oxide emission intensity of each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the global warming potential of the nitrous oxide, and the pure electricity utilization coefficient; determining a second converted value of the nitrous oxide based on the nitrous oxide emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode, the global warming potential of the nitrous oxide, and the pure electricity utilization coefficient; The greenhouse gas emission intensity converted from nitrous oxide emissions is determined according to the first converted value of nitrous oxide and the second converted value of nitrous oxide.

8. The method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle according to claim 7, wherein: The expression for calculating the greenhouse gas emission intensity converted from nitrous oxide emissions is: in, Convert the greenhouse gas emission intensity of the nitrous oxide emission to represents the nitrous oxide emission intensity of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, represents the global warming potential of the nitrous oxide, represents the pure electric utilization coefficient of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, It represents the nitrous oxide emission intensity of the plug-in hybrid electric vehicle in the charge-sustaining mode.

9. The method for calculating greenhouse gas emission intensity of a plug-in hybrid electric vehicle according to claim 2, wherein: The expression for calculating the greenhouse gas emission intensity converted from electricity consumption is: in, The greenhouse gas emission intensity converted from the electricity consumption is: represents the power consumption of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, represents the pure electric utilization coefficient of the plug-in hybrid electric vehicle in the i-th driving cycle in the power consumption mode, is the energy conversion factor between electricity and gasoline, is the CO2 emission factor of gasoline, is the global warming potential of carbon dioxide.

10. A greenhouse gas emission intensity calculation device, characterized in that: include: an acquisition module, configured to acquire the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, for each driving cycle of the plug-in hybrid electric vehicle in a power consumption mode, and to acquire the pure electric power utilization coefficient for each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode; and to acquire the emission intensities of carbon dioxide, methane, and nitrous oxide, respectively, for the plug-in hybrid electric vehicle in a power preservation mode; a first determining module, configured to determine, based on the emission intensities of carbon dioxide, methane, and nitrous oxide during each driving cycle of the plug-in hybrid electric vehicle in the power consumption mode, the pure electric power utilization coefficient, and the emission intensities of carbon dioxide, methane, and nitrous oxide during the power maintenance mode of the plug-in hybrid electric vehicle, a greenhouse gas emission intensity converted from carbon dioxide, methane, and nitrous oxide; and a second determining module, configured to determine the greenhouse gas emission intensity converted from electricity consumption according to the electricity consumption of each driving cycle of the plug-in hybrid electric vehicle in the electricity consumption mode and the pure electricity utilization coefficient; The third determination module is used to determine the comprehensive greenhouse gas emission intensity of the plug-in hybrid vehicle based on the greenhouse gas emission intensity converted from carbon dioxide emissions, the greenhouse gas emission intensity converted from methane emissions, the greenhouse gas emission intensity converted from nitrous oxide emissions, and the greenhouse gas emission intensity converted from electricity consumption.

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